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skia/skia.git/refs/heads/skqp/dev/./src/gpu/gl/GrGLGpu.cpp
blob: d3fa6e1a2d6d963bc2739986571401e409808356 [file] [edit]
/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "include/core/SkPixmap.h"
#include "include/core/SkStrokeRec.h"
#include "include/core/SkTypes.h"
#include "include/gpu/GrBackendSemaphore.h"
#include "include/gpu/GrBackendSurface.h"
#include "include/gpu/GrTypes.h"
#include "include/private/SkHalf.h"
#include "include/private/SkTemplates.h"
#include "include/private/SkTo.h"
#include "src/core/SkAutoMalloc.h"
#include "src/core/SkConvertPixels.h"
#include "src/core/SkMakeUnique.h"
#include "src/core/SkMipMap.h"
#include "src/core/SkTraceEvent.h"
#include "src/gpu/GrContextPriv.h"
#include "src/gpu/GrCpuBuffer.h"
#include "src/gpu/GrDataUtils.h"
#include "src/gpu/GrFixedClip.h"
#include "src/gpu/GrGpuResourcePriv.h"
#include "src/gpu/GrMesh.h"
#include "src/gpu/GrPipeline.h"
#include "src/gpu/GrProgramInfo.h"
#include "src/gpu/GrRenderTargetPriv.h"
#include "src/gpu/GrShaderCaps.h"
#include "src/gpu/GrSurfaceProxyPriv.h"
#include "src/gpu/GrTexturePriv.h"
#include "src/gpu/gl/GrGLBuffer.h"
#include "src/gpu/gl/GrGLGpu.h"
#include "src/gpu/gl/GrGLOpsRenderPass.h"
#include "src/gpu/gl/GrGLSemaphore.h"
#include "src/gpu/gl/GrGLStencilAttachment.h"
#include "src/gpu/gl/GrGLTextureRenderTarget.h"
#include "src/gpu/gl/builders/GrGLShaderStringBuilder.h"
#include "src/sksl/SkSLCompiler.h"
#include <cmath>
#define GL_CALL(X) GR_GL_CALL(this->glInterface(), X)
#define GL_CALL_RET(RET, X) GR_GL_CALL_RET(this->glInterface(), RET, X)
#if GR_GL_CHECK_ALLOC_WITH_GET_ERROR
#define CLEAR_ERROR_BEFORE_ALLOC(iface) GrGLClearErr(iface)
#define GL_ALLOC_CALL(iface, call) GR_GL_CALL_NOERRCHECK(iface, call)
#define CHECK_ALLOC_ERROR(iface) GR_GL_GET_ERROR(iface)
#else
#define CLEAR_ERROR_BEFORE_ALLOC(iface)
#define GL_ALLOC_CALL(iface, call) GR_GL_CALL(iface, call)
#define CHECK_ALLOC_ERROR(iface) GR_GL_NO_ERROR
#endif
//#define USE_NSIGHT
///////////////////////////////////////////////////////////////////////////////
static const GrGLenum gXfermodeEquation2Blend[] = {
// Basic OpenGL blend equations.
GR_GL_FUNC_ADD,
GR_GL_FUNC_SUBTRACT,
GR_GL_FUNC_REVERSE_SUBTRACT,
// GL_KHR_blend_equation_advanced.
GR_GL_SCREEN,
GR_GL_OVERLAY,
GR_GL_DARKEN,
GR_GL_LIGHTEN,
GR_GL_COLORDODGE,
GR_GL_COLORBURN,
GR_GL_HARDLIGHT,
GR_GL_SOFTLIGHT,
GR_GL_DIFFERENCE,
GR_GL_EXCLUSION,
GR_GL_MULTIPLY,
GR_GL_HSL_HUE,
GR_GL_HSL_SATURATION,
GR_GL_HSL_COLOR,
GR_GL_HSL_LUMINOSITY,
// Illegal... needs to map to something.
GR_GL_FUNC_ADD,
};
GR_STATIC_ASSERT(0 == kAdd_GrBlendEquation);
GR_STATIC_ASSERT(1 == kSubtract_GrBlendEquation);
GR_STATIC_ASSERT(2 == kReverseSubtract_GrBlendEquation);
GR_STATIC_ASSERT(3 == kScreen_GrBlendEquation);
GR_STATIC_ASSERT(4 == kOverlay_GrBlendEquation);
GR_STATIC_ASSERT(5 == kDarken_GrBlendEquation);
GR_STATIC_ASSERT(6 == kLighten_GrBlendEquation);
GR_STATIC_ASSERT(7 == kColorDodge_GrBlendEquation);
GR_STATIC_ASSERT(8 == kColorBurn_GrBlendEquation);
GR_STATIC_ASSERT(9 == kHardLight_GrBlendEquation);
GR_STATIC_ASSERT(10 == kSoftLight_GrBlendEquation);
GR_STATIC_ASSERT(11 == kDifference_GrBlendEquation);
GR_STATIC_ASSERT(12 == kExclusion_GrBlendEquation);
GR_STATIC_ASSERT(13 == kMultiply_GrBlendEquation);
GR_STATIC_ASSERT(14 == kHSLHue_GrBlendEquation);
GR_STATIC_ASSERT(15 == kHSLSaturation_GrBlendEquation);
GR_STATIC_ASSERT(16 == kHSLColor_GrBlendEquation);
GR_STATIC_ASSERT(17 == kHSLLuminosity_GrBlendEquation);
GR_STATIC_ASSERT(SK_ARRAY_COUNT(gXfermodeEquation2Blend) == kGrBlendEquationCnt);
static const GrGLenum gXfermodeCoeff2Blend[] = {
GR_GL_ZERO,
GR_GL_ONE,
GR_GL_SRC_COLOR,
GR_GL_ONE_MINUS_SRC_COLOR,
GR_GL_DST_COLOR,
GR_GL_ONE_MINUS_DST_COLOR,
GR_GL_SRC_ALPHA,
GR_GL_ONE_MINUS_SRC_ALPHA,
GR_GL_DST_ALPHA,
GR_GL_ONE_MINUS_DST_ALPHA,
GR_GL_CONSTANT_COLOR,
GR_GL_ONE_MINUS_CONSTANT_COLOR,
GR_GL_CONSTANT_ALPHA,
GR_GL_ONE_MINUS_CONSTANT_ALPHA,
// extended blend coeffs
GR_GL_SRC1_COLOR,
GR_GL_ONE_MINUS_SRC1_COLOR,
GR_GL_SRC1_ALPHA,
GR_GL_ONE_MINUS_SRC1_ALPHA,
// Illegal... needs to map to something.
GR_GL_ZERO,
};
bool GrGLGpu::BlendCoeffReferencesConstant(GrBlendCoeff coeff) {
static const bool gCoeffReferencesBlendConst[] = {
false,
false,
false,
false,
false,
false,
false,
false,
false,
false,
true,
true,
true,
true,
// extended blend coeffs
false,
false,
false,
false,
// Illegal.
false,
};
return gCoeffReferencesBlendConst[coeff];
GR_STATIC_ASSERT(kGrBlendCoeffCnt == SK_ARRAY_COUNT(gCoeffReferencesBlendConst));
GR_STATIC_ASSERT(0 == kZero_GrBlendCoeff);
GR_STATIC_ASSERT(1 == kOne_GrBlendCoeff);
GR_STATIC_ASSERT(2 == kSC_GrBlendCoeff);
GR_STATIC_ASSERT(3 == kISC_GrBlendCoeff);
GR_STATIC_ASSERT(4 == kDC_GrBlendCoeff);
GR_STATIC_ASSERT(5 == kIDC_GrBlendCoeff);
GR_STATIC_ASSERT(6 == kSA_GrBlendCoeff);
GR_STATIC_ASSERT(7 == kISA_GrBlendCoeff);
GR_STATIC_ASSERT(8 == kDA_GrBlendCoeff);
GR_STATIC_ASSERT(9 == kIDA_GrBlendCoeff);
GR_STATIC_ASSERT(10 == kConstC_GrBlendCoeff);
GR_STATIC_ASSERT(11 == kIConstC_GrBlendCoeff);
GR_STATIC_ASSERT(12 == kConstA_GrBlendCoeff);
GR_STATIC_ASSERT(13 == kIConstA_GrBlendCoeff);
GR_STATIC_ASSERT(14 == kS2C_GrBlendCoeff);
GR_STATIC_ASSERT(15 == kIS2C_GrBlendCoeff);
GR_STATIC_ASSERT(16 == kS2A_GrBlendCoeff);
GR_STATIC_ASSERT(17 == kIS2A_GrBlendCoeff);
// assertion for gXfermodeCoeff2Blend have to be in GrGpu scope
GR_STATIC_ASSERT(kGrBlendCoeffCnt == SK_ARRAY_COUNT(gXfermodeCoeff2Blend));
}
//////////////////////////////////////////////////////////////////////////////
static int gl_target_to_binding_index(GrGLenum target) {
switch (target) {
case GR_GL_TEXTURE_2D:
return 0;
case GR_GL_TEXTURE_RECTANGLE:
return 1;
case GR_GL_TEXTURE_EXTERNAL:
return 2;
}
SK_ABORT("Unexpected GL texture target.");
}
GrGpuResource::UniqueID GrGLGpu::TextureUnitBindings::boundID(GrGLenum target) const {
return fTargetBindings[gl_target_to_binding_index(target)].fBoundResourceID;
}
bool GrGLGpu::TextureUnitBindings::hasBeenModified(GrGLenum target) const {
return fTargetBindings[gl_target_to_binding_index(target)].fHasBeenModified;
}
void GrGLGpu::TextureUnitBindings::setBoundID(GrGLenum target, GrGpuResource::UniqueID resourceID) {
int targetIndex = gl_target_to_binding_index(target);
fTargetBindings[targetIndex].fBoundResourceID = resourceID;
fTargetBindings[targetIndex].fHasBeenModified = true;
}
void GrGLGpu::TextureUnitBindings::invalidateForScratchUse(GrGLenum target) {
this->setBoundID(target, GrGpuResource::UniqueID());
}
void GrGLGpu::TextureUnitBindings::invalidateAllTargets(bool markUnmodified) {
for (auto& targetBinding : fTargetBindings) {
targetBinding.fBoundResourceID.makeInvalid();
if (markUnmodified) {
targetBinding.fHasBeenModified = false;
}
}
}
//////////////////////////////////////////////////////////////////////////////
static GrGLenum filter_to_gl_mag_filter(GrSamplerState::Filter filter) {
switch (filter) {
case GrSamplerState::Filter::kNearest: return GR_GL_NEAREST;
case GrSamplerState::Filter::kBilerp: return GR_GL_LINEAR;
case GrSamplerState::Filter::kMipMap: return GR_GL_LINEAR;
}
SK_ABORT("Unknown filter");
}
static GrGLenum filter_to_gl_min_filter(GrSamplerState::Filter filter) {
switch (filter) {
case GrSamplerState::Filter::kNearest: return GR_GL_NEAREST;
case GrSamplerState::Filter::kBilerp: return GR_GL_LINEAR;
case GrSamplerState::Filter::kMipMap: return GR_GL_LINEAR_MIPMAP_LINEAR;
}
SK_ABORT("Unknown filter");
}
static inline GrGLenum wrap_mode_to_gl_wrap(GrSamplerState::WrapMode wrapMode,
const GrCaps& caps) {
switch (wrapMode) {
case GrSamplerState::WrapMode::kClamp: return GR_GL_CLAMP_TO_EDGE;
case GrSamplerState::WrapMode::kRepeat: return GR_GL_REPEAT;
case GrSamplerState::WrapMode::kMirrorRepeat: return GR_GL_MIRRORED_REPEAT;
case GrSamplerState::WrapMode::kClampToBorder:
// May not be supported but should have been caught earlier
SkASSERT(caps.clampToBorderSupport());
return GR_GL_CLAMP_TO_BORDER;
}
SK_ABORT("Unknown wrap mode");
}
///////////////////////////////////////////////////////////////////////////////
class GrGLGpu::SamplerObjectCache {
public:
SamplerObjectCache(GrGLGpu* gpu) : fGpu(gpu) {
fNumTextureUnits = fGpu->glCaps().shaderCaps()->maxFragmentSamplers();
fHWBoundSamplers.reset(new GrGLuint[fNumTextureUnits]);
std::fill_n(fHWBoundSamplers.get(), fNumTextureUnits, 0);
std::fill_n(fSamplers, kNumSamplers, 0);
}
~SamplerObjectCache() {
if (!fNumTextureUnits) {
// We've already been abandoned.
return;
}
for (GrGLuint sampler : fSamplers) {
// The spec states that "zero" values should be silently ignored, however they still
// trigger GL errors on some NVIDIA platforms.
if (sampler) {
GR_GL_CALL(fGpu->glInterface(), DeleteSamplers(1, &sampler));
}
}
}
void bindSampler(int unitIdx, const GrSamplerState& state) {
int index = StateToIndex(state);
if (!fSamplers[index]) {
GrGLuint s;
GR_GL_CALL(fGpu->glInterface(), GenSamplers(1, &s));
if (!s) {
return;
}
fSamplers[index] = s;
auto minFilter = filter_to_gl_min_filter(state.filter());
auto magFilter = filter_to_gl_mag_filter(state.filter());
auto wrapX = wrap_mode_to_gl_wrap(state.wrapModeX(), fGpu->glCaps());
auto wrapY = wrap_mode_to_gl_wrap(state.wrapModeY(), fGpu->glCaps());
GR_GL_CALL(fGpu->glInterface(),
SamplerParameteri(s, GR_GL_TEXTURE_MIN_FILTER, minFilter));
GR_GL_CALL(fGpu->glInterface(),
SamplerParameteri(s, GR_GL_TEXTURE_MAG_FILTER, magFilter));
GR_GL_CALL(fGpu->glInterface(), SamplerParameteri(s, GR_GL_TEXTURE_WRAP_S, wrapX));
GR_GL_CALL(fGpu->glInterface(), SamplerParameteri(s, GR_GL_TEXTURE_WRAP_T, wrapY));
}
if (fHWBoundSamplers[unitIdx] != fSamplers[index]) {
GR_GL_CALL(fGpu->glInterface(), BindSampler(unitIdx, fSamplers[index]));
fHWBoundSamplers[unitIdx] = fSamplers[index];
}
}
void invalidateBindings() {
// When we have sampler support we always use samplers. So setting these to zero will cause
// a rebind on next usage.
std::fill_n(fHWBoundSamplers.get(), fNumTextureUnits, 0);
}
void abandon() {
fHWBoundSamplers.reset();
fNumTextureUnits = 0;
}
void release() {
if (!fNumTextureUnits) {
// We've already been abandoned.
return;
}
GR_GL_CALL(fGpu->glInterface(), DeleteSamplers(kNumSamplers, fSamplers));
std::fill_n(fSamplers, kNumSamplers, 0);
// Deleting a bound sampler implicitly binds sampler 0.
std::fill_n(fHWBoundSamplers.get(), fNumTextureUnits, 0);
}
private:
static int StateToIndex(const GrSamplerState& state) {
int filter = static_cast<int>(state.filter());
SkASSERT(filter >= 0 && filter < 3);
int wrapX = static_cast<int>(state.wrapModeX());
SkASSERT(wrapX >= 0 && wrapX < 4);
int wrapY = static_cast<int>(state.wrapModeY());
SkASSERT(wrapY >= 0 && wrapY < 4);
int idx = 16 * filter + 4 * wrapX + wrapY;
SkASSERT(idx < kNumSamplers);
return idx;
}
GrGLGpu* fGpu;
static constexpr int kNumSamplers = 48;
std::unique_ptr<GrGLuint[]> fHWBoundSamplers;
GrGLuint fSamplers[kNumSamplers];
int fNumTextureUnits;
};
///////////////////////////////////////////////////////////////////////////////
sk_sp<GrGpu> GrGLGpu::Make(sk_sp<const GrGLInterface> interface, const GrContextOptions& options,
GrContext* context) {
if (!interface) {
interface = GrGLMakeNativeInterface();
// For clients that have written their own GrGLCreateNativeInterface and haven't yet updated
// to GrGLMakeNativeInterface.
if (!interface) {
interface = sk_ref_sp(GrGLCreateNativeInterface());
}
if (!interface) {
return nullptr;
}
}
#ifdef USE_NSIGHT
const_cast<GrContextOptions&>(options).fSuppressPathRendering = true;
#endif
auto glContext = GrGLContext::Make(std::move(interface), options);
if (!glContext) {
return nullptr;
}
return sk_sp<GrGpu>(new GrGLGpu(std::move(glContext), context));
}
GrGLGpu::GrGLGpu(std::unique_ptr<GrGLContext> ctx, GrContext* context)
: GrGpu(context)
, fGLContext(std::move(ctx))
, fProgramCache(new ProgramCache(this))
, fHWProgramID(0)
, fTempSrcFBOID(0)
, fTempDstFBOID(0)
, fStencilClearFBOID(0) {
SkASSERT(fGLContext);
GrGLClearErr(this->glInterface());
fCaps = sk_ref_sp(fGLContext->caps());
fHWTextureUnitBindings.reset(this->numTextureUnits());
this->hwBufferState(GrGpuBufferType::kVertex)->fGLTarget = GR_GL_ARRAY_BUFFER;
this->hwBufferState(GrGpuBufferType::kIndex)->fGLTarget = GR_GL_ELEMENT_ARRAY_BUFFER;
if (GrGLCaps::kChromium_TransferBufferType == this->glCaps().transferBufferType()) {
this->hwBufferState(GrGpuBufferType::kXferCpuToGpu)->fGLTarget =
GR_GL_PIXEL_UNPACK_TRANSFER_BUFFER_CHROMIUM;
this->hwBufferState(GrGpuBufferType::kXferGpuToCpu)->fGLTarget =
GR_GL_PIXEL_PACK_TRANSFER_BUFFER_CHROMIUM;
} else {
this->hwBufferState(GrGpuBufferType::kXferCpuToGpu)->fGLTarget = GR_GL_PIXEL_UNPACK_BUFFER;
this->hwBufferState(GrGpuBufferType::kXferGpuToCpu)->fGLTarget = GR_GL_PIXEL_PACK_BUFFER;
}
for (int i = 0; i < kGrGpuBufferTypeCount; ++i) {
fHWBufferState[i].invalidate();
}
GR_STATIC_ASSERT(4 == SK_ARRAY_COUNT(fHWBufferState));
if (this->glCaps().shaderCaps()->pathRenderingSupport()) {
fPathRendering.reset(new GrGLPathRendering(this));
}
if (this->glCaps().samplerObjectSupport()) {
fSamplerObjectCache.reset(new SamplerObjectCache(this));
}
}
GrGLGpu::~GrGLGpu() {
// Ensure any GrGpuResource objects get deleted first, since they may require a working GrGLGpu
// to release the resources held by the objects themselves.
fPathRendering.reset();
fCopyProgramArrayBuffer.reset();
fMipmapProgramArrayBuffer.reset();
fHWProgram.reset();
if (fHWProgramID) {
// detach the current program so there is no confusion on OpenGL's part
// that we want it to be deleted
GL_CALL(UseProgram(0));
}
if (fTempSrcFBOID) {
this->deleteFramebuffer(fTempSrcFBOID);
}
if (fTempDstFBOID) {
this->deleteFramebuffer(fTempDstFBOID);
}
if (fStencilClearFBOID) {
this->deleteFramebuffer(fStencilClearFBOID);
}
for (size_t i = 0; i < SK_ARRAY_COUNT(fCopyPrograms); ++i) {
if (0 != fCopyPrograms[i].fProgram) {
GL_CALL(DeleteProgram(fCopyPrograms[i].fProgram));
}
}
for (size_t i = 0; i < SK_ARRAY_COUNT(fMipmapPrograms); ++i) {
if (0 != fMipmapPrograms[i].fProgram) {
GL_CALL(DeleteProgram(fMipmapPrograms[i].fProgram));
}
}
delete fProgramCache;
fSamplerObjectCache.reset();
}
void GrGLGpu::disconnect(DisconnectType type) {
INHERITED::disconnect(type);
if (DisconnectType::kCleanup == type) {
if (fHWProgramID) {
GL_CALL(UseProgram(0));
}
if (fTempSrcFBOID) {
this->deleteFramebuffer(fTempSrcFBOID);
}
if (fTempDstFBOID) {
this->deleteFramebuffer(fTempDstFBOID);
}
if (fStencilClearFBOID) {
this->deleteFramebuffer(fStencilClearFBOID);
}
for (size_t i = 0; i < SK_ARRAY_COUNT(fCopyPrograms); ++i) {
if (fCopyPrograms[i].fProgram) {
GL_CALL(DeleteProgram(fCopyPrograms[i].fProgram));
}
}
for (size_t i = 0; i < SK_ARRAY_COUNT(fMipmapPrograms); ++i) {
if (fMipmapPrograms[i].fProgram) {
GL_CALL(DeleteProgram(fMipmapPrograms[i].fProgram));
}
}
if (fSamplerObjectCache) {
fSamplerObjectCache->release();
}
} else {
if (fProgramCache) {
fProgramCache->abandon();
}
if (fSamplerObjectCache) {
fSamplerObjectCache->abandon();
}
}
fHWProgram.reset();
delete fProgramCache;
fProgramCache = nullptr;
fHWProgramID = 0;
fTempSrcFBOID = 0;
fTempDstFBOID = 0;
fStencilClearFBOID = 0;
fCopyProgramArrayBuffer.reset();
for (size_t i = 0; i < SK_ARRAY_COUNT(fCopyPrograms); ++i) {
fCopyPrograms[i].fProgram = 0;
}
fMipmapProgramArrayBuffer.reset();
for (size_t i = 0; i < SK_ARRAY_COUNT(fMipmapPrograms); ++i) {
fMipmapPrograms[i].fProgram = 0;
}
if (this->glCaps().shaderCaps()->pathRenderingSupport()) {
this->glPathRendering()->disconnect(type);
}
}
///////////////////////////////////////////////////////////////////////////////
void GrGLGpu::onResetContext(uint32_t resetBits) {
if (resetBits & kMisc_GrGLBackendState) {
// we don't use the zb at all
GL_CALL(Disable(GR_GL_DEPTH_TEST));
GL_CALL(DepthMask(GR_GL_FALSE));
// We don't use face culling.
GL_CALL(Disable(GR_GL_CULL_FACE));
// We do use separate stencil. Our algorithms don't care which face is front vs. back so
// just set this to the default for self-consistency.
GL_CALL(FrontFace(GR_GL_CCW));
this->hwBufferState(GrGpuBufferType::kXferCpuToGpu)->invalidate();
this->hwBufferState(GrGpuBufferType::kXferGpuToCpu)->invalidate();
if (GR_IS_GR_GL(this->glStandard())) {
#ifndef USE_NSIGHT
// Desktop-only state that we never change
if (!this->glCaps().isCoreProfile()) {
GL_CALL(Disable(GR_GL_POINT_SMOOTH));
GL_CALL(Disable(GR_GL_LINE_SMOOTH));
GL_CALL(Disable(GR_GL_POLYGON_SMOOTH));
GL_CALL(Disable(GR_GL_POLYGON_STIPPLE));
GL_CALL(Disable(GR_GL_COLOR_LOGIC_OP));
GL_CALL(Disable(GR_GL_INDEX_LOGIC_OP));
}
// The windows NVIDIA driver has GL_ARB_imaging in the extension string when using a
// core profile. This seems like a bug since the core spec removes any mention of
// GL_ARB_imaging.
if (this->glCaps().imagingSupport() && !this->glCaps().isCoreProfile()) {
GL_CALL(Disable(GR_GL_COLOR_TABLE));
}
GL_CALL(Disable(GR_GL_POLYGON_OFFSET_FILL));
if (this->caps()->wireframeMode()) {
GL_CALL(PolygonMode(GR_GL_FRONT_AND_BACK, GR_GL_LINE));
} else {
GL_CALL(PolygonMode(GR_GL_FRONT_AND_BACK, GR_GL_FILL));
}
#endif
// Since ES doesn't support glPointSize at all we always use the VS to
// set the point size
GL_CALL(Enable(GR_GL_VERTEX_PROGRAM_POINT_SIZE));
}
if (GR_IS_GR_GL_ES(this->glStandard()) &&
this->glCaps().fbFetchRequiresEnablePerSample()) {
// The arm extension requires specifically enabling MSAA fetching per sample.
// On some devices this may have a perf hit. Also multiple render targets are disabled
GL_CALL(Enable(GR_GL_FETCH_PER_SAMPLE));
}
fHWWriteToColor = kUnknown_TriState;
// we only ever use lines in hairline mode
GL_CALL(LineWidth(1));
GL_CALL(Disable(GR_GL_DITHER));
fHWClearColor[0] = fHWClearColor[1] = fHWClearColor[2] = fHWClearColor[3] = SK_FloatNaN;
}
if (resetBits & kMSAAEnable_GrGLBackendState) {
fMSAAEnabled = kUnknown_TriState;
if (this->caps()->mixedSamplesSupport()) {
// The skia blend modes all use premultiplied alpha and therefore expect RGBA coverage
// modulation. This state has no effect when not rendering to a mixed sampled target.
GL_CALL(CoverageModulation(GR_GL_RGBA));
}
}
fHWActiveTextureUnitIdx = -1; // invalid
fLastPrimitiveType = static_cast<GrPrimitiveType>(-1);
if (resetBits & kTextureBinding_GrGLBackendState) {
for (int s = 0; s < this->numTextureUnits(); ++s) {
fHWTextureUnitBindings[s].invalidateAllTargets(false);
}
if (fSamplerObjectCache) {
fSamplerObjectCache->invalidateBindings();
}
}
if (resetBits & kBlend_GrGLBackendState) {
fHWBlendState.invalidate();
}
if (resetBits & kView_GrGLBackendState) {
fHWScissorSettings.invalidate();
fHWWindowRectsState.invalidate();
fHWViewport.invalidate();
}
if (resetBits & kStencil_GrGLBackendState) {
fHWStencilSettings.invalidate();
fHWStencilTestEnabled = kUnknown_TriState;
}
// Vertex
if (resetBits & kVertex_GrGLBackendState) {
fHWVertexArrayState.invalidate();
this->hwBufferState(GrGpuBufferType::kVertex)->invalidate();
this->hwBufferState(GrGpuBufferType::kIndex)->invalidate();
}
if (resetBits & kRenderTarget_GrGLBackendState) {
fHWBoundRenderTargetUniqueID.makeInvalid();
fHWSRGBFramebuffer = kUnknown_TriState;
}
if (resetBits & kPathRendering_GrGLBackendState) {
if (this->caps()->shaderCaps()->pathRenderingSupport()) {
this->glPathRendering()->resetContext();
}
}
// we assume these values
if (resetBits & kPixelStore_GrGLBackendState) {
if (this->caps()->writePixelsRowBytesSupport()) {
GL_CALL(PixelStorei(GR_GL_UNPACK_ROW_LENGTH, 0));
}
if (this->glCaps().readPixelsRowBytesSupport()) {
GL_CALL(PixelStorei(GR_GL_PACK_ROW_LENGTH, 0));
}
if (this->glCaps().packFlipYSupport()) {
GL_CALL(PixelStorei(GR_GL_PACK_REVERSE_ROW_ORDER, GR_GL_FALSE));
}
}
if (resetBits & kProgram_GrGLBackendState) {
fHWProgramID = 0;
fHWProgram.reset();
}
++fResetTimestampForTextureParameters;
}
static bool check_backend_texture(const GrBackendTexture& backendTex, const GrColorType colorType,
const GrGLCaps& caps, GrGLTexture::Desc* desc,
bool skipRectTexSupportCheck = false) {
GrGLTextureInfo info;
if (!backendTex.getGLTextureInfo(&info) || !info.fID || !info.fFormat) {
return false;
}
desc->fSize = {backendTex.width(), backendTex.height()};
desc->fTarget = info.fTarget;
desc->fID = info.fID;
desc->fFormat = GrGLFormatFromGLEnum(info.fFormat);
if (desc->fFormat == GrGLFormat::kUnknown) {
return false;
}
if (GR_GL_TEXTURE_EXTERNAL == desc->fTarget) {
if (!caps.shaderCaps()->externalTextureSupport()) {
return false;
}
} else if (GR_GL_TEXTURE_RECTANGLE == desc->fTarget) {
if (!caps.rectangleTextureSupport() && !skipRectTexSupportCheck) {
return false;
}
} else if (GR_GL_TEXTURE_2D != desc->fTarget) {
return false;
}
if (backendTex.isProtected()) {
// Not supported in GL backend at this time.
return false;
}
desc->fConfig = caps.getConfigFromBackendFormat(backendTex.getBackendFormat(), colorType);
SkASSERT(desc->fConfig != kUnknown_GrPixelConfig);
return true;
}
sk_sp<GrTexture> GrGLGpu::onWrapBackendTexture(const GrBackendTexture& backendTex,
GrColorType colorType, GrWrapOwnership ownership,
GrWrapCacheable cacheable, GrIOType ioType) {
GrGLTexture::Desc desc;
if (!check_backend_texture(backendTex, colorType, this->glCaps(), &desc)) {
return nullptr;
}
if (kBorrow_GrWrapOwnership == ownership) {
desc.fOwnership = GrBackendObjectOwnership::kBorrowed;
} else {
desc.fOwnership = GrBackendObjectOwnership::kOwned;
}
GrMipMapsStatus mipMapsStatus = backendTex.hasMipMaps() ? GrMipMapsStatus::kValid
: GrMipMapsStatus::kNotAllocated;
auto texture = GrGLTexture::MakeWrapped(this, mipMapsStatus, desc,
backendTex.getGLTextureParams(), cacheable, ioType);
// We don't know what parameters are already set on wrapped textures.
texture->textureParamsModified();
return texture;
}
sk_sp<GrTexture> GrGLGpu::onWrapRenderableBackendTexture(const GrBackendTexture& backendTex,
int sampleCnt,
GrColorType colorType,
GrWrapOwnership ownership,
GrWrapCacheable cacheable) {
const GrGLCaps& caps = this->glCaps();
GrGLTexture::Desc desc;
if (!check_backend_texture(backendTex, colorType, this->glCaps(), &desc)) {
return nullptr;
}
SkASSERT(caps.isFormatRenderable(desc.fFormat, sampleCnt));
SkASSERT(caps.isFormatTexturable(desc.fFormat));
// We don't support rendering to a EXTERNAL texture.
if (GR_GL_TEXTURE_EXTERNAL == desc.fTarget) {
return nullptr;
}
if (kBorrow_GrWrapOwnership == ownership) {
desc.fOwnership = GrBackendObjectOwnership::kBorrowed;
} else {
desc.fOwnership = GrBackendObjectOwnership::kOwned;
}
sampleCnt = caps.getRenderTargetSampleCount(sampleCnt, desc.fFormat);
SkASSERT(sampleCnt);
GrGLRenderTarget::IDs rtIDs;
if (!this->createRenderTargetObjects(desc, sampleCnt, &rtIDs)) {
return nullptr;
}
GrMipMapsStatus mipMapsStatus = backendTex.hasMipMaps() ? GrMipMapsStatus::kDirty
: GrMipMapsStatus::kNotAllocated;
sk_sp<GrGLTextureRenderTarget> texRT(GrGLTextureRenderTarget::MakeWrapped(
this, sampleCnt, desc, backendTex.getGLTextureParams(), rtIDs, cacheable,
mipMapsStatus));
texRT->baseLevelWasBoundToFBO();
// We don't know what parameters are already set on wrapped textures.
texRT->textureParamsModified();
return texRT;
}
sk_sp<GrRenderTarget> GrGLGpu::onWrapBackendRenderTarget(const GrBackendRenderTarget& backendRT,
GrColorType grColorType) {
GrGLFramebufferInfo info;
if (!backendRT.getGLFramebufferInfo(&info)) {
return nullptr;
}
if (backendRT.isProtected()) {
// Not supported in GL at this time.
return nullptr;
}
const auto format = backendRT.getBackendFormat().asGLFormat();
if (!this->glCaps().isFormatRenderable(format, backendRT.sampleCnt())) {
return nullptr;
}
GrGLRenderTarget::IDs rtIDs;
rtIDs.fRTFBOID = info.fFBOID;
rtIDs.fMSColorRenderbufferID = 0;
rtIDs.fTexFBOID = GrGLRenderTarget::kUnresolvableFBOID;
rtIDs.fRTFBOOwnership = GrBackendObjectOwnership::kBorrowed;
GrPixelConfig config = this->caps()->getConfigFromBackendFormat(backendRT.getBackendFormat(),
grColorType);
SkASSERT(kUnknown_GrPixelConfig != config);
const auto size = SkISize::Make(backendRT.width(), backendRT.height());
int sampleCount = this->glCaps().getRenderTargetSampleCount(backendRT.sampleCnt(), format);
return GrGLRenderTarget::MakeWrapped(this, size, format, config, sampleCount, rtIDs,
backendRT.stencilBits());
}
sk_sp<GrRenderTarget> GrGLGpu::onWrapBackendTextureAsRenderTarget(const GrBackendTexture& tex,
int sampleCnt,
GrColorType colorType) {
GrGLTexture::Desc desc;
// We do not check whether texture rectangle is supported by Skia - if the caller provided us
// with a texture rectangle,we assume the necessary support exists.
if (!check_backend_texture(tex, colorType, this->glCaps(), &desc, true)) {
return nullptr;
}
if (!this->glCaps().isFormatRenderable(desc.fFormat, sampleCnt)) {
return nullptr;
}
const int sampleCount = this->glCaps().getRenderTargetSampleCount(sampleCnt, desc.fFormat);
GrGLRenderTarget::IDs rtIDs;
if (!this->createRenderTargetObjects(desc, sampleCount, &rtIDs)) {
return nullptr;
}
return GrGLRenderTarget::MakeWrapped(this, desc.fSize, desc.fFormat, desc.fConfig, sampleCount,
rtIDs, 0);
}
static bool check_write_and_transfer_input(GrGLTexture* glTex) {
if (!glTex) {
return false;
}
// Write or transfer of pixels is not implemented for TEXTURE_EXTERNAL textures
if (GR_GL_TEXTURE_EXTERNAL == glTex->target()) {
return false;
}
return true;
}
bool GrGLGpu::onWritePixels(GrSurface* surface, int left, int top, int width, int height,
GrColorType surfaceColorType, GrColorType srcColorType,
const GrMipLevel texels[], int mipLevelCount,
bool prepForTexSampling) {
auto glTex = static_cast<GrGLTexture*>(surface->asTexture());
if (!check_write_and_transfer_input(glTex)) {
return false;
}
this->bindTextureToScratchUnit(glTex->target(), glTex->textureID());
SkASSERT(!GrGLFormatIsCompressed(glTex->format()));
return this->uploadTexData(glTex->format(), surfaceColorType, glTex->width(), glTex->height(),
glTex->target(), left, top, width, height, srcColorType, texels,
mipLevelCount);
}
bool GrGLGpu::onTransferPixelsTo(GrTexture* texture, int left, int top, int width, int height,
GrColorType textureColorType, GrColorType bufferColorType,
GrGpuBuffer* transferBuffer, size_t offset, size_t rowBytes) {
GrGLTexture* glTex = static_cast<GrGLTexture*>(texture);
// Can't transfer compressed data
SkASSERT(!GrGLFormatIsCompressed(glTex->format()));
if (!check_write_and_transfer_input(glTex)) {
return false;
}
static_assert(sizeof(int) == sizeof(int32_t), "");
if (width <= 0 || height <= 0) {
return false;
}
this->bindTextureToScratchUnit(glTex->target(), glTex->textureID());
SkASSERT(!transferBuffer->isMapped());
SkASSERT(!transferBuffer->isCpuBuffer());
const GrGLBuffer* glBuffer = static_cast<const GrGLBuffer*>(transferBuffer);
this->bindBuffer(GrGpuBufferType::kXferCpuToGpu, glBuffer);
SkDEBUGCODE(
SkIRect subRect = SkIRect::MakeXYWH(left, top, width, height);
SkIRect bounds = SkIRect::MakeWH(texture->width(), texture->height());
SkASSERT(bounds.contains(subRect));
)
size_t bpp = GrColorTypeBytesPerPixel(bufferColorType);
const size_t trimRowBytes = width * bpp;
const void* pixels = (void*)offset;
if (width < 0 || height < 0) {
return false;
}
bool restoreGLRowLength = false;
if (trimRowBytes != rowBytes) {
// we should have checked for this support already
SkASSERT(this->glCaps().writePixelsRowBytesSupport());
GL_CALL(PixelStorei(GR_GL_UNPACK_ROW_LENGTH, rowBytes / bpp));
restoreGLRowLength = true;
}
GrGLFormat textureFormat = glTex->format();
// External format and type come from the upload data.
GrGLenum externalFormat = 0;
GrGLenum externalType = 0;
this->glCaps().getTexSubImageExternalFormatAndType(
textureFormat, textureColorType, bufferColorType, &externalFormat, &externalType);
if (!externalFormat || !externalType) {
return false;
}
GL_CALL(PixelStorei(GR_GL_UNPACK_ALIGNMENT, 1));
GL_CALL(TexSubImage2D(glTex->target(),
0,
left, top,
width,
height,
externalFormat, externalType,
pixels));
if (restoreGLRowLength) {
GL_CALL(PixelStorei(GR_GL_UNPACK_ROW_LENGTH, 0));
}
return true;
}
bool GrGLGpu::onTransferPixelsFrom(GrSurface* surface, int left, int top, int width, int height,
GrColorType surfaceColorType, GrColorType dstColorType,
GrGpuBuffer* transferBuffer, size_t offset) {
auto* glBuffer = static_cast<GrGLBuffer*>(transferBuffer);
this->bindBuffer(GrGpuBufferType::kXferGpuToCpu, glBuffer);
auto offsetAsPtr = reinterpret_cast<void*>(offset);
return this->readOrTransferPixelsFrom(surface, left, top, width, height, surfaceColorType,
dstColorType, offsetAsPtr, width);
}
void GrGLGpu::unbindCpuToGpuXferBuffer() {
auto* xferBufferState = this->hwBufferState(GrGpuBufferType::kXferCpuToGpu);
if (!xferBufferState->fBoundBufferUniqueID.isInvalid()) {
GL_CALL(BindBuffer(xferBufferState->fGLTarget, 0));
xferBufferState->invalidate();
}
}
bool GrGLGpu::uploadTexData(GrGLFormat textureFormat, GrColorType textureColorType, int texWidth,
int texHeight, GrGLenum target, int left, int top, int width,
int height, GrColorType srcColorType, const GrMipLevel texels[],
int mipLevelCount, GrMipMapsStatus* mipMapsStatus) {
// If we're uploading compressed data then we should be using uploadCompressedTexData
SkASSERT(!GrGLFormatIsCompressed(textureFormat));
SkASSERT(this->glCaps().isFormatTexturable(textureFormat));
SkDEBUGCODE(
SkIRect subRect = SkIRect::MakeXYWH(left, top, width, height);
SkIRect bounds = SkIRect::MakeWH(texWidth, texHeight);
SkASSERT(bounds.contains(subRect));
)
SkASSERT(1 == mipLevelCount ||
(0 == left && 0 == top && width == texWidth && height == texHeight));
this->unbindCpuToGpuXferBuffer();
const GrGLInterface* interface = this->glInterface();
const GrGLCaps& caps = this->glCaps();
size_t bpp = GrColorTypeBytesPerPixel(srcColorType);
if (width == 0 || height == 0) {
return false;
}
// External format and type come from the upload data.
GrGLenum externalFormat;
GrGLenum externalType;
this->glCaps().getTexSubImageExternalFormatAndType(
textureFormat, textureColorType, srcColorType, &externalFormat, &externalType);
if (!externalFormat || !externalType) {
return false;
}
/*
* Check whether to allocate a temporary buffer for flipping y or
* because our srcData has extra bytes past each row. If so, we need
* to trim those off here, since GL ES may not let us specify
* GL_UNPACK_ROW_LENGTH.
*/
bool restoreGLRowLength = false;
if (mipMapsStatus) {
*mipMapsStatus = (mipLevelCount > 1) ?
GrMipMapsStatus::kValid : GrMipMapsStatus::kNotAllocated;
}
GR_GL_CALL(interface, PixelStorei(GR_GL_UNPACK_ALIGNMENT, 1));
for (int currentMipLevel = 0; currentMipLevel < mipLevelCount; currentMipLevel++) {
if (!texels[currentMipLevel].fPixels) {
if (mipMapsStatus) {
*mipMapsStatus = GrMipMapsStatus::kDirty;
}
continue;
}
int twoToTheMipLevel = 1 << currentMipLevel;
const int currentWidth = SkTMax(1, width / twoToTheMipLevel);
const int currentHeight = SkTMax(1, height / twoToTheMipLevel);
const size_t trimRowBytes = currentWidth * bpp;
const size_t rowBytes = texels[currentMipLevel].fRowBytes;
if (caps.writePixelsRowBytesSupport() && (rowBytes != trimRowBytes || restoreGLRowLength)) {
GrGLint rowLength = static_cast<GrGLint>(rowBytes / bpp);
GR_GL_CALL(interface, PixelStorei(GR_GL_UNPACK_ROW_LENGTH, rowLength));
restoreGLRowLength = true;
}
GL_CALL(TexSubImage2D(target, currentMipLevel, left, top, currentWidth, currentHeight,
externalFormat, externalType, texels[currentMipLevel].fPixels));
}
if (restoreGLRowLength) {
SkASSERT(caps.writePixelsRowBytesSupport());
GL_CALL(PixelStorei(GR_GL_UNPACK_ROW_LENGTH, 0));
}
return true;
}
bool GrGLGpu::uploadCompressedTexData(GrGLFormat format,
SkImage::CompressionType compressionType,
const SkISize& dimensions,
GrGLenum target,
const void* data) {
SkASSERT(format != GrGLFormat::kUnknown);
const GrGLCaps& caps = this->glCaps();
// We only need the internal format for compressed 2D textures.
GrGLenum internalFormat = caps.getTexImageOrStorageInternalFormat(format);
if (!internalFormat) {
return 0;
}
bool useTexStorage = caps.formatSupportsTexStorage(format);
static constexpr int kMipLevelCount = 1;
// Make sure that the width and height that we pass to OpenGL
// is a multiple of the block size.
size_t dataSize =
GrCompressedDataSize(compressionType, dimensions.width(), dimensions.height());
if (useTexStorage) {
// We never resize or change formats of textures.
GL_ALLOC_CALL(this->glInterface(),
TexStorage2D(target, kMipLevelCount, internalFormat, dimensions.width(),
dimensions.height()));
GrGLenum error = CHECK_ALLOC_ERROR(this->glInterface());
if (error != GR_GL_NO_ERROR) {
return false;
}
GL_CALL(CompressedTexSubImage2D(target,
0, // level
0, // left
0, // top
dimensions.width(),
dimensions.height(),
internalFormat,
SkToInt(dataSize),
data));
} else {
GL_ALLOC_CALL(this->glInterface(), CompressedTexImage2D(target,
0, // level
internalFormat,
dimensions.width(),
dimensions.height(),
0, // border
SkToInt(dataSize),
data));
GrGLenum error = CHECK_ALLOC_ERROR(this->glInterface());
if (error != GR_GL_NO_ERROR) {
return false;
}
}
return true;
}
static bool renderbuffer_storage_msaa(const GrGLContext& ctx,
int sampleCount,
GrGLenum format,
int width, int height) {
CLEAR_ERROR_BEFORE_ALLOC(ctx.interface());
SkASSERT(GrGLCaps::kNone_MSFBOType != ctx.caps()->msFBOType());
switch (ctx.caps()->msFBOType()) {
case GrGLCaps::kStandard_MSFBOType:
GL_ALLOC_CALL(ctx.interface(),
RenderbufferStorageMultisample(GR_GL_RENDERBUFFER,
sampleCount,
format,
width, height));
break;
case GrGLCaps::kES_Apple_MSFBOType:
GL_ALLOC_CALL(ctx.interface(),
RenderbufferStorageMultisampleES2APPLE(GR_GL_RENDERBUFFER,
sampleCount,
format,
width, height));
break;
case GrGLCaps::kES_EXT_MsToTexture_MSFBOType:
case GrGLCaps::kES_IMG_MsToTexture_MSFBOType:
GL_ALLOC_CALL(ctx.interface(),
RenderbufferStorageMultisampleES2EXT(GR_GL_RENDERBUFFER,
sampleCount,
format,
width, height));
break;
case GrGLCaps::kNone_MSFBOType:
SK_ABORT("Shouldn't be here if we don't support multisampled renderbuffers.");
break;
}
return (GR_GL_NO_ERROR == CHECK_ALLOC_ERROR(ctx.interface()));
}
bool GrGLGpu::createRenderTargetObjects(const GrGLTexture::Desc& desc,
int sampleCount,
GrGLRenderTarget::IDs* rtIDs) {
rtIDs->fMSColorRenderbufferID = 0;
rtIDs->fRTFBOID = 0;
rtIDs->fRTFBOOwnership = GrBackendObjectOwnership::kOwned;
rtIDs->fTexFBOID = 0;
GrGLenum colorRenderbufferFormat = 0; // suppress warning
if (desc.fFormat == GrGLFormat::kUnknown) {
goto FAILED;
}
if (sampleCount > 1 && GrGLCaps::kNone_MSFBOType == this->glCaps().msFBOType()) {
goto FAILED;
}
GL_CALL(GenFramebuffers(1, &rtIDs->fTexFBOID));
if (!rtIDs->fTexFBOID) {
goto FAILED;
}
// If we are using multisampling we will create two FBOS. We render to one and then resolve to
// the texture bound to the other. The exception is the IMG multisample extension. With this
// extension the texture is multisampled when rendered to and then auto-resolves it when it is
// rendered from.
if (sampleCount > 1 && this->glCaps().usesMSAARenderBuffers()) {
GL_CALL(GenFramebuffers(1, &rtIDs->fRTFBOID));
GL_CALL(GenRenderbuffers(1, &rtIDs->fMSColorRenderbufferID));
if (!rtIDs->fRTFBOID || !rtIDs->fMSColorRenderbufferID) {
goto FAILED;
}
colorRenderbufferFormat = this->glCaps().getRenderbufferInternalFormat(desc.fFormat);
} else {
rtIDs->fRTFBOID = rtIDs->fTexFBOID;
}
// below here we may bind the FBO
fHWBoundRenderTargetUniqueID.makeInvalid();
if (rtIDs->fRTFBOID != rtIDs->fTexFBOID) {
SkASSERT(sampleCount > 1);
GL_CALL(BindRenderbuffer(GR_GL_RENDERBUFFER, rtIDs->fMSColorRenderbufferID));
if (!renderbuffer_storage_msaa(*fGLContext, sampleCount, colorRenderbufferFormat,
desc.fSize.width(), desc.fSize.height())) {
goto FAILED;
}
this->bindFramebuffer(GR_GL_FRAMEBUFFER, rtIDs->fRTFBOID);
GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER,
GR_GL_COLOR_ATTACHMENT0,
GR_GL_RENDERBUFFER,
rtIDs->fMSColorRenderbufferID));
}
this->bindFramebuffer(GR_GL_FRAMEBUFFER, rtIDs->fTexFBOID);
if (this->glCaps().usesImplicitMSAAResolve() && sampleCount > 1) {
GL_CALL(FramebufferTexture2DMultisample(GR_GL_FRAMEBUFFER,
GR_GL_COLOR_ATTACHMENT0,
desc.fTarget,
desc.fID,
0,
sampleCount));
} else {
GL_CALL(FramebufferTexture2D(GR_GL_FRAMEBUFFER,
GR_GL_COLOR_ATTACHMENT0,
desc.fTarget,
desc.fID,
0));
}
return true;
FAILED:
if (rtIDs->fMSColorRenderbufferID) {
GL_CALL(DeleteRenderbuffers(1, &rtIDs->fMSColorRenderbufferID));
}
if (rtIDs->fRTFBOID != rtIDs->fTexFBOID) {
this->deleteFramebuffer(rtIDs->fRTFBOID);
}
if (rtIDs->fTexFBOID) {
this->deleteFramebuffer(rtIDs->fTexFBOID);
}
return false;
}
// good to set a break-point here to know when createTexture fails
static sk_sp<GrTexture> return_null_texture() {
// SkDEBUGFAIL("null texture");
return nullptr;
}
static GrGLTextureParameters::SamplerOverriddenState set_initial_texture_params(
const GrGLInterface* interface, GrGLenum target) {
// Some drivers like to know filter/wrap before seeing glTexImage2D. Some
// drivers have a bug where an FBO won't be complete if it includes a
// texture that is not mipmap complete (considering the filter in use).
GrGLTextureParameters::SamplerOverriddenState state;
state.fMinFilter = GR_GL_NEAREST;
state.fMagFilter = GR_GL_NEAREST;
state.fWrapS = GR_GL_CLAMP_TO_EDGE;
state.fWrapT = GR_GL_CLAMP_TO_EDGE;
GR_GL_CALL(interface, TexParameteri(target, GR_GL_TEXTURE_MAG_FILTER, state.fMagFilter));
GR_GL_CALL(interface, TexParameteri(target, GR_GL_TEXTURE_MIN_FILTER, state.fMinFilter));
GR_GL_CALL(interface, TexParameteri(target, GR_GL_TEXTURE_WRAP_S, state.fWrapS));
GR_GL_CALL(interface, TexParameteri(target, GR_GL_TEXTURE_WRAP_T, state.fWrapT));
return state;
}
sk_sp<GrTexture> GrGLGpu::onCreateTexture(const GrSurfaceDesc& desc,
const GrBackendFormat& format,
GrRenderable renderable,
int renderTargetSampleCnt,
SkBudgeted budgeted,
GrProtected isProtected,
int mipLevelCount,
uint32_t levelClearMask) {
// We don't support protected textures in GL.
if (isProtected == GrProtected::kYes) {
return nullptr;
}
SkASSERT(GrGLCaps::kNone_MSFBOType != this->glCaps().msFBOType() || renderTargetSampleCnt == 1);
SkASSERT(mipLevelCount > 0);
GrMipMapsStatus mipMapsStatus =
mipLevelCount > 1 ? GrMipMapsStatus::kDirty : GrMipMapsStatus::kNotAllocated;
GrGLTextureParameters::SamplerOverriddenState initialState;
GrGLTexture::Desc texDesc;
texDesc.fSize = {desc.fWidth, desc.fHeight};
texDesc.fTarget = GR_GL_TEXTURE_2D;
texDesc.fFormat = format.asGLFormat();
texDesc.fConfig = desc.fConfig;
texDesc.fOwnership = GrBackendObjectOwnership::kOwned;
SkASSERT(texDesc.fFormat != GrGLFormat::kUnknown);
SkASSERT(!GrGLFormatIsCompressed(texDesc.fFormat));
texDesc.fID = this->createTexture2D({desc.fWidth, desc.fHeight}, texDesc.fFormat, renderable,
&initialState, mipLevelCount);
if (!texDesc.fID) {
return return_null_texture();
}
sk_sp<GrGLTexture> tex;
if (renderable == GrRenderable::kYes) {
// unbind the texture from the texture unit before binding it to the frame buffer
GL_CALL(BindTexture(texDesc.fTarget, 0));
GrGLRenderTarget::IDs rtIDDesc;
if (!this->createRenderTargetObjects(texDesc, renderTargetSampleCnt, &rtIDDesc)) {
GL_CALL(DeleteTextures(1, &texDesc.fID));
return return_null_texture();
}
tex = sk_make_sp<GrGLTextureRenderTarget>(
this, budgeted, renderTargetSampleCnt, texDesc, rtIDDesc, mipMapsStatus);
tex->baseLevelWasBoundToFBO();
} else {
tex = sk_make_sp<GrGLTexture>(this, budgeted, texDesc, mipMapsStatus);
}
// The non-sampler params are still at their default values.
tex->parameters()->set(&initialState, GrGLTextureParameters::NonsamplerState(),
fResetTimestampForTextureParameters);
if (levelClearMask) {
GrGLenum externalFormat, externalType;
GrColorType colorType;
this->glCaps().getTexSubImageDefaultFormatTypeAndColorType(texDesc.fFormat, &externalFormat,
&externalType, &colorType);
if (this->glCaps().clearTextureSupport()) {
for (int i = 0; i < mipLevelCount; ++i) {
if (levelClearMask & (1U << i)) {
GL_CALL(ClearTexImage(tex->textureID(), i, externalFormat, externalType,
nullptr));
}
}
} else if (this->glCaps().canFormatBeFBOColorAttachment(format.asGLFormat()) &&
!this->glCaps().performColorClearsAsDraws()) {
this->disableScissor();
this->disableWindowRectangles();
this->flushColorWrite(true);
this->flushClearColor(SK_PMColor4fTRANSPARENT);
for (int i = 0; i < mipLevelCount; ++i) {
if (levelClearMask & (1U << i)) {
this->bindSurfaceFBOForPixelOps(tex.get(), i, GR_GL_FRAMEBUFFER,
kDst_TempFBOTarget);
GL_CALL(Clear(GR_GL_COLOR_BUFFER_BIT));
this->unbindSurfaceFBOForPixelOps(tex.get(), i, GR_GL_FRAMEBUFFER);
}
}
fHWBoundRenderTargetUniqueID.makeInvalid();
} else {
std::unique_ptr<char[]> zeros;
GL_CALL(PixelStorei(GR_GL_UNPACK_ALIGNMENT, 1));
for (int i = 0; i < mipLevelCount; ++i) {
if (levelClearMask & (1U << i)) {
int levelWidth = SkTMax(1, texDesc.fSize.width() >> i);
int levelHeight = SkTMax(1, texDesc.fSize.height() >> i);
// Levels only get smaller as we proceed. Once we create a zeros use it for all
// smaller levels that need clearing.
if (!zeros) {
size_t bpp = GrColorTypeBytesPerPixel(colorType);
size_t size = levelWidth * levelHeight * bpp;
zeros.reset(new char[size]());
}
this->bindTextureToScratchUnit(GR_GL_TEXTURE_2D, tex->textureID());
GL_CALL(TexSubImage2D(GR_GL_TEXTURE_2D, i, 0, 0, levelWidth, levelHeight,
externalFormat, externalType, zeros.get()));
}
}
}
}
return tex;
}
sk_sp<GrTexture> GrGLGpu::onCreateCompressedTexture(int width, int height,
const GrBackendFormat& format,
SkImage::CompressionType compression,
SkBudgeted budgeted, const void* data) {
GrGLTextureParameters::SamplerOverriddenState initialState;
GrGLTexture::Desc desc;
desc.fSize = {width, height};
desc.fTarget = GR_GL_TEXTURE_2D;
desc.fConfig = GrCompressionTypePixelConfig(compression);
desc.fOwnership = GrBackendObjectOwnership::kOwned;
desc.fFormat = format.asGLFormat();
desc.fID = this->createCompressedTexture2D(desc.fSize, desc.fFormat, compression, &initialState,
data);
if (!desc.fID) {
return nullptr;
}
auto tex = sk_make_sp<GrGLTexture>(this, budgeted, desc, GrMipMapsStatus::kNotAllocated);
// The non-sampler params are still at their default values.
tex->parameters()->set(&initialState, GrGLTextureParameters::NonsamplerState(),
fResetTimestampForTextureParameters);
return tex;
}
namespace {
const GrGLuint kUnknownBitCount = GrGLStencilAttachment::kUnknownBitCount;
void inline get_stencil_rb_sizes(const GrGLInterface* gl,
GrGLStencilAttachment::Format* format) {
// we shouldn't ever know one size and not the other
SkASSERT((kUnknownBitCount == format->fStencilBits) ==
(kUnknownBitCount == format->fTotalBits));
if (kUnknownBitCount == format->fStencilBits) {
GR_GL_GetRenderbufferParameteriv(gl, GR_GL_RENDERBUFFER,
GR_GL_RENDERBUFFER_STENCIL_SIZE,
(GrGLint*)&format->fStencilBits);
if (format->fPacked) {
GR_GL_GetRenderbufferParameteriv(gl, GR_GL_RENDERBUFFER,
GR_GL_RENDERBUFFER_DEPTH_SIZE,
(GrGLint*)&format->fTotalBits);
format->fTotalBits += format->fStencilBits;
} else {
format->fTotalBits = format->fStencilBits;
}
}
}
}
int GrGLGpu::getCompatibleStencilIndex(GrGLFormat format) {
static const int kSize = 16;
SkASSERT(this->glCaps().canFormatBeFBOColorAttachment(format));
if (!this->glCaps().hasStencilFormatBeenDeterminedForFormat(format)) {
// Default to unsupported, set this if we find a stencil format that works.
int firstWorkingStencilFormatIndex = -1;
GrGLuint colorID =
this->createTexture2D({kSize, kSize}, format, GrRenderable::kYes, nullptr, 1);
if (!colorID) {
return -1;
}
// unbind the texture from the texture unit before binding it to the frame buffer
GL_CALL(BindTexture(GR_GL_TEXTURE_2D, 0));
// Create Framebuffer
GrGLuint fb = 0;
GL_CALL(GenFramebuffers(1, &fb));
this->bindFramebuffer(GR_GL_FRAMEBUFFER, fb);
fHWBoundRenderTargetUniqueID.makeInvalid();
GL_CALL(FramebufferTexture2D(GR_GL_FRAMEBUFFER,
GR_GL_COLOR_ATTACHMENT0,
GR_GL_TEXTURE_2D,
colorID,
0));
GrGLuint sbRBID = 0;
GL_CALL(GenRenderbuffers(1, &sbRBID));
// look over formats till I find a compatible one
int stencilFmtCnt = this->glCaps().stencilFormats().count();
if (sbRBID) {
GL_CALL(BindRenderbuffer(GR_GL_RENDERBUFFER, sbRBID));
for (int i = 0; i < stencilFmtCnt && sbRBID; ++i) {
const GrGLCaps::StencilFormat& sFmt = this->glCaps().stencilFormats()[i];
CLEAR_ERROR_BEFORE_ALLOC(this->glInterface());
GL_ALLOC_CALL(this->glInterface(), RenderbufferStorage(GR_GL_RENDERBUFFER,
sFmt.fInternalFormat,
kSize, kSize));
if (GR_GL_NO_ERROR == CHECK_ALLOC_ERROR(this->glInterface())) {
GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER,
GR_GL_STENCIL_ATTACHMENT,
GR_GL_RENDERBUFFER, sbRBID));
if (sFmt.fPacked) {
GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER,
GR_GL_DEPTH_ATTACHMENT,
GR_GL_RENDERBUFFER, sbRBID));
} else {
GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER,
GR_GL_DEPTH_ATTACHMENT,
GR_GL_RENDERBUFFER, 0));
}
GrGLenum status;
GL_CALL_RET(status, CheckFramebufferStatus(GR_GL_FRAMEBUFFER));
if (status == GR_GL_FRAMEBUFFER_COMPLETE) {
firstWorkingStencilFormatIndex = i;
break;
}
GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER,
GR_GL_STENCIL_ATTACHMENT,
GR_GL_RENDERBUFFER, 0));
if (sFmt.fPacked) {
GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER,
GR_GL_DEPTH_ATTACHMENT,
GR_GL_RENDERBUFFER, 0));
}
}
}
GL_CALL(DeleteRenderbuffers(1, &sbRBID));
}
GL_CALL(DeleteTextures(1, &colorID));
this->bindFramebuffer(GR_GL_FRAMEBUFFER, 0);
this->deleteFramebuffer(fb);
fGLContext->caps()->setStencilFormatIndexForFormat(format, firstWorkingStencilFormatIndex);
}
return this->glCaps().getStencilFormatIndexForFormat(format);
}
GrGLuint GrGLGpu::createCompressedTexture2D(
const SkISize& dimensions,
GrGLFormat format,
SkImage::CompressionType compression,
GrGLTextureParameters::SamplerOverriddenState* initialState,
const void* data) {
if (format == GrGLFormat::kUnknown) {
return 0;
}
GrGLuint id = 0;
GL_CALL(GenTextures(1, &id));
if (!id) {
return 0;
}
this->bindTextureToScratchUnit(GR_GL_TEXTURE_2D, id);
*initialState = set_initial_texture_params(this->glInterface(), GR_GL_TEXTURE_2D);
if (!this->uploadCompressedTexData(format, compression, dimensions, GR_GL_TEXTURE_2D, data)) {
GL_CALL(DeleteTextures(1, &id));
return 0;
}
return id;
}
GrGLuint GrGLGpu::createTexture2D(const SkISize& dimensions,
GrGLFormat format,
GrRenderable renderable,
GrGLTextureParameters::SamplerOverriddenState* initialState,
int mipLevelCount) {
SkASSERT(format != GrGLFormat::kUnknown);
SkASSERT(!GrGLFormatIsCompressed(format));
GrGLuint id = 0;
GL_CALL(GenTextures(1, &id));
if (!id) {
return 0;
}
this->bindTextureToScratchUnit(GR_GL_TEXTURE_2D, id);
if (GrRenderable::kYes == renderable && this->glCaps().textureUsageSupport()) {
// provides a hint about how this texture will be used
GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, GR_GL_TEXTURE_USAGE, GR_GL_FRAMEBUFFER_ATTACHMENT));
}
if (initialState) {
*initialState = set_initial_texture_params(this->glInterface(), GR_GL_TEXTURE_2D);
} else {
set_initial_texture_params(this->glInterface(), GR_GL_TEXTURE_2D);
}
GrGLenum internalFormat = this->glCaps().getTexImageOrStorageInternalFormat(format);
bool success = false;
if (internalFormat) {
CLEAR_ERROR_BEFORE_ALLOC(this->glInterface());
if (this->glCaps().formatSupportsTexStorage(format)) {
GL_ALLOC_CALL(this->glInterface(),
TexStorage2D(GR_GL_TEXTURE_2D, SkTMax(mipLevelCount, 1), internalFormat,
dimensions.width(), dimensions.height()));
success = (GR_GL_NO_ERROR == CHECK_ALLOC_ERROR(this->glInterface()));
} else {
GrGLenum externalFormat, externalType;
this->glCaps().getTexImageExternalFormatAndType(format, &externalFormat, &externalType);
GrGLenum error = GR_GL_NO_ERROR;
if (externalFormat && externalType) {
for (int level = 0; level < mipLevelCount && error == GR_GL_NO_ERROR; level++) {
const int twoToTheMipLevel = 1 << level;
const int currentWidth = SkTMax(1, dimensions.width() / twoToTheMipLevel);
const int currentHeight = SkTMax(1, dimensions.height() / twoToTheMipLevel);
GL_ALLOC_CALL(
this->glInterface(),
TexImage2D(GR_GL_TEXTURE_2D, level, internalFormat, currentWidth,
currentHeight, 0, externalFormat, externalType, nullptr));
error = CHECK_ALLOC_ERROR(this->glInterface());
}
success = (GR_GL_NO_ERROR == error);
}
}
}
if (success) {
return id;
}
GL_CALL(DeleteTextures(1, &id));
return 0;
}
GrStencilAttachment* GrGLGpu::createStencilAttachmentForRenderTarget(
const GrRenderTarget* rt, int width, int height, int numStencilSamples) {
SkASSERT(width >= rt->width());
SkASSERT(height >= rt->height());
GrGLStencilAttachment::IDDesc sbDesc;
int sIdx = this->getCompatibleStencilIndex(rt->backendFormat().asGLFormat());
if (sIdx < 0) {
return nullptr;
}
if (!sbDesc.fRenderbufferID) {
GL_CALL(GenRenderbuffers(1, &sbDesc.fRenderbufferID));
}
if (!sbDesc.fRenderbufferID) {
return nullptr;
}
GL_CALL(BindRenderbuffer(GR_GL_RENDERBUFFER, sbDesc.fRenderbufferID));
const GrGLCaps::StencilFormat& sFmt = this->glCaps().stencilFormats()[sIdx];
CLEAR_ERROR_BEFORE_ALLOC(this->glInterface());
// we do this "if" so that we don't call the multisample
// version on a GL that doesn't have an MSAA extension.
if (numStencilSamples > 1) {
SkAssertResult(renderbuffer_storage_msaa(*fGLContext,
numStencilSamples,
sFmt.fInternalFormat,
width, height));
} else {
GL_ALLOC_CALL(this->glInterface(), RenderbufferStorage(GR_GL_RENDERBUFFER,
sFmt.fInternalFormat,
width, height));
SkASSERT(GR_GL_NO_ERROR == CHECK_ALLOC_ERROR(this->glInterface()));
}
fStats.incStencilAttachmentCreates();
// After sized formats we attempt an unsized format and take
// whatever sizes GL gives us. In that case we query for the size.
GrGLStencilAttachment::Format format = sFmt;
get_stencil_rb_sizes(this->glInterface(), &format);
GrGLStencilAttachment* stencil = new GrGLStencilAttachment(this,
sbDesc,
width,
height,
numStencilSamples,
format);
return stencil;
}
////////////////////////////////////////////////////////////////////////////////
sk_sp<GrGpuBuffer> GrGLGpu::onCreateBuffer(size_t size, GrGpuBufferType intendedType,
GrAccessPattern accessPattern, const void* data) {
return GrGLBuffer::Make(this, size, intendedType, accessPattern, data);
}
void GrGLGpu::flushScissor(const GrScissorState& scissorState, int rtWidth, int rtHeight,
GrSurfaceOrigin rtOrigin) {
if (scissorState.enabled()) {
auto scissor = GrNativeRect::MakeRelativeTo(rtOrigin, rtHeight, scissorState.rect());
// if the scissor fully contains the viewport then we fall through and
// disable the scissor test.
if (!scissor.contains(rtWidth, rtHeight)) {
if (fHWScissorSettings.fRect != scissor) {
GL_CALL(Scissor(scissor.fX, scissor.fY, scissor.fWidth, scissor.fHeight));
fHWScissorSettings.fRect = scissor;
}
if (kYes_TriState != fHWScissorSettings.fEnabled) {
GL_CALL(Enable(GR_GL_SCISSOR_TEST));
fHWScissorSettings.fEnabled = kYes_TriState;
}
return;
}
}
// See fall through note above
this->disableScissor();
}
void GrGLGpu::flushWindowRectangles(const GrWindowRectsState& windowState,
const GrGLRenderTarget* rt, GrSurfaceOrigin origin) {
#ifndef USE_NSIGHT
typedef GrWindowRectsState::Mode Mode;
SkASSERT(!windowState.enabled() || rt->renderFBOID()); // Window rects can't be used on-screen.
SkASSERT(windowState.numWindows() <= this->caps()->maxWindowRectangles());
if (!this->caps()->maxWindowRectangles() ||
fHWWindowRectsState.knownEqualTo(origin, rt->width(), rt->height(), windowState)) {
return;
}
// This is purely a workaround for a spurious warning generated by gcc. Otherwise the above
// assert would be sufficient. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=5912
int numWindows = SkTMin(windowState.numWindows(), int(GrWindowRectangles::kMaxWindows));
SkASSERT(windowState.numWindows() == numWindows);
GrNativeRect glwindows[GrWindowRectangles::kMaxWindows];
const SkIRect* skwindows = windowState.windows().data();
for (int i = 0; i < numWindows; ++i) {
glwindows[i].setRelativeTo(origin, rt->height(), skwindows[i]);
}
GrGLenum glmode = (Mode::kExclusive == windowState.mode()) ? GR_GL_EXCLUSIVE : GR_GL_INCLUSIVE;
GL_CALL(WindowRectangles(glmode, numWindows, glwindows->asInts()));
fHWWindowRectsState.set(origin, rt->width(), rt->height(), windowState);
#endif
}
void GrGLGpu::disableWindowRectangles() {
#ifndef USE_NSIGHT
if (!this->caps()->maxWindowRectangles() || fHWWindowRectsState.knownDisabled()) {
return;
}
GL_CALL(WindowRectangles(GR_GL_EXCLUSIVE, 0, nullptr));
fHWWindowRectsState.setDisabled();
#endif
}
bool GrGLGpu::flushGLState(GrRenderTarget* renderTarget, const GrProgramInfo& programInfo) {
sk_sp<GrGLProgram> program(fProgramCache->refProgram(this, renderTarget, programInfo));
if (!program) {
GrCapsDebugf(this->caps(), "Failed to create program!\n");
return false;
}
this->flushProgram(std::move(program));
// Swizzle the blend to match what the shader will output.
this->flushBlendAndColorWrite(programInfo.pipeline().getXferProcessor().getBlendInfo(),
programInfo.pipeline().outputSwizzle());
fHWProgram->updateUniformsAndTextureBindings(renderTarget, programInfo);
GrGLRenderTarget* glRT = static_cast<GrGLRenderTarget*>(renderTarget);
GrStencilSettings stencil;
if (programInfo.pipeline().isStencilEnabled()) {
SkASSERT(glRT->renderTargetPriv().getStencilAttachment());
stencil.reset(*programInfo.pipeline().getUserStencil(),
programInfo.pipeline().hasStencilClip(),
glRT->renderTargetPriv().numStencilBits());
}
this->flushStencil(stencil, programInfo.origin());
if (programInfo.pipeline().isScissorEnabled()) {
static constexpr SkIRect kBogusScissor{0, 0, 1, 1};
GrScissorState state(programInfo.fixedDynamicState() ? programInfo.fixedScissor()
: kBogusScissor);
this->flushScissor(state, glRT->width(), glRT->height(), programInfo.origin());
} else {
this->disableScissor();
}
this->flushWindowRectangles(programInfo.pipeline().getWindowRectsState(),
glRT, programInfo.origin());
this->flushHWAAState(glRT, programInfo.pipeline().isHWAntialiasState());
// This must come after textures are flushed because a texture may need
// to be msaa-resolved (which will modify bound FBO state).
this->flushRenderTarget(glRT);
return true;
}
void GrGLGpu::flushProgram(sk_sp<GrGLProgram> program) {
if (!program) {
fHWProgram.reset();
fHWProgramID = 0;
return;
}
SkASSERT((program == fHWProgram) == (fHWProgramID == program->programID()));
if (program == fHWProgram) {
return;
}
auto id = program->programID();
SkASSERT(id);
GL_CALL(UseProgram(id));
fHWProgram = std::move(program);
fHWProgramID = id;
}
void GrGLGpu::flushProgram(GrGLuint id) {
SkASSERT(id);
if (fHWProgramID == id) {
SkASSERT(!fHWProgram);
return;
}
fHWProgram.reset();
GL_CALL(UseProgram(id));
fHWProgramID = id;
}
void GrGLGpu::setupGeometry(const GrBuffer* indexBuffer,
const GrBuffer* vertexBuffer,
int baseVertex,
const GrBuffer* instanceBuffer,
int baseInstance,
GrPrimitiveRestart enablePrimitiveRestart) {
SkASSERT((enablePrimitiveRestart == GrPrimitiveRestart::kNo) || indexBuffer);
GrGLAttribArrayState* attribState;
if (indexBuffer) {
SkASSERT(indexBuffer->isCpuBuffer() ||
!static_cast<const GrGpuBuffer*>(indexBuffer)->isMapped());
attribState = fHWVertexArrayState.bindInternalVertexArray(this, indexBuffer);
} else {
attribState = fHWVertexArrayState.bindInternalVertexArray(this);
}
int numAttribs = fHWProgram->numVertexAttributes() + fHWProgram->numInstanceAttributes();
attribState->enableVertexArrays(this, numAttribs, enablePrimitiveRestart);
if (int vertexStride = fHWProgram->vertexStride()) {
SkASSERT(vertexBuffer);
SkASSERT(vertexBuffer->isCpuBuffer() ||
!static_cast<const GrGpuBuffer*>(vertexBuffer)->isMapped());
size_t bufferOffset = baseVertex * static_cast<size_t>(vertexStride);
for (int i = 0; i < fHWProgram->numVertexAttributes(); ++i) {
const auto& attrib = fHWProgram->vertexAttribute(i);
static constexpr int kDivisor = 0;
attribState->set(this, attrib.fLocation, vertexBuffer, attrib.fCPUType, attrib.fGPUType,
vertexStride, bufferOffset + attrib.fOffset, kDivisor);
}
}
if (int instanceStride = fHWProgram->instanceStride()) {
SkASSERT(instanceBuffer);
SkASSERT(instanceBuffer->isCpuBuffer() ||
!static_cast<const GrGpuBuffer*>(instanceBuffer)->isMapped());
size_t bufferOffset = baseInstance * static_cast<size_t>(instanceStride);
int attribIdx = fHWProgram->numVertexAttributes();
for (int i = 0; i < fHWProgram->numInstanceAttributes(); ++i, ++attribIdx) {
const auto& attrib = fHWProgram->instanceAttribute(i);
static constexpr int kDivisor = 1;
attribState->set(this, attrib.fLocation, instanceBuffer, attrib.fCPUType,
attrib.fGPUType, instanceStride, bufferOffset + attrib.fOffset,
kDivisor);
}
}
}
GrGLenum GrGLGpu::bindBuffer(GrGpuBufferType type, const GrBuffer* buffer) {
this->handleDirtyContext();
// Index buffer state is tied to the vertex array.
if (GrGpuBufferType::kIndex == type) {
this->bindVertexArray(0);
}
auto* bufferState = this->hwBufferState(type);
if (buffer->isCpuBuffer()) {
if (!bufferState->fBufferZeroKnownBound) {
GL_CALL(BindBuffer(bufferState->fGLTarget, 0));
bufferState->fBufferZeroKnownBound = true;
bufferState->fBoundBufferUniqueID.makeInvalid();
}
} else if (static_cast<const GrGpuBuffer*>(buffer)->uniqueID() !=
bufferState->fBoundBufferUniqueID) {
const GrGLBuffer* glBuffer = static_cast<const GrGLBuffer*>(buffer);
GL_CALL(BindBuffer(bufferState->fGLTarget, glBuffer->bufferID()));
bufferState->fBufferZeroKnownBound = false;
bufferState->fBoundBufferUniqueID = glBuffer->uniqueID();
}
return bufferState->fGLTarget;
}
void GrGLGpu::disableScissor() {
if (kNo_TriState != fHWScissorSettings.fEnabled) {
GL_CALL(Disable(GR_GL_SCISSOR_TEST));
fHWScissorSettings.fEnabled = kNo_TriState;
return;
}
}
void GrGLGpu::clear(const GrFixedClip& clip, const SkPMColor4f& color,
GrRenderTarget* target, GrSurfaceOrigin origin) {
// parent class should never let us get here with no RT
SkASSERT(target);
SkASSERT(!this->caps()->performColorClearsAsDraws());
SkASSERT(!clip.scissorEnabled() || !this->caps()->performPartialClearsAsDraws());
this->handleDirtyContext();
GrGLRenderTarget* glRT = static_cast<GrGLRenderTarget*>(target);
if (clip.scissorEnabled()) {
this->flushRenderTarget(glRT, origin, clip.scissorRect());
} else {
this->flushRenderTarget(glRT);
}
this->flushScissor(clip.scissorState(), glRT->width(), glRT->height(), origin);
this->flushWindowRectangles(clip.windowRectsState(), glRT, origin);
this->flushColorWrite(true);
this->flushClearColor(color);
GL_CALL(Clear(GR_GL_COLOR_BUFFER_BIT));
}
void GrGLGpu::clearStencil(GrRenderTarget* target, int clearValue) {
SkASSERT(!this->caps()->performStencilClearsAsDraws());
if (!target) {
return;
}
// This should only be called internally when we know we have a stencil buffer.
SkASSERT(target->renderTargetPriv().getStencilAttachment());
GrGLRenderTarget* glRT = static_cast<GrGLRenderTarget*>(target);
this->flushRenderTargetNoColorWrites(glRT);
this->disableScissor();
this->disableWindowRectangles();
GL_CALL(StencilMask(0xffffffff));
GL_CALL(ClearStencil(clearValue));
GL_CALL(Clear(GR_GL_STENCIL_BUFFER_BIT));
fHWStencilSettings.invalidate();
}
static bool use_tiled_rendering(const GrGLCaps& glCaps,
const GrOpsRenderPass::StencilLoadAndStoreInfo& stencilLoadStore) {
// Only use the tiled rendering extension if we can explicitly clear and discard the stencil.
// Otherwise it's faster to just not use it.
return glCaps.tiledRenderingSupport() && GrLoadOp::kClear == stencilLoadStore.fLoadOp &&
GrStoreOp::kDiscard == stencilLoadStore.fStoreOp;
}
void GrGLGpu::beginCommandBuffer(GrRenderTarget* rt, const SkIRect& bounds, GrSurfaceOrigin origin,
const GrOpsRenderPass::LoadAndStoreInfo& colorLoadStore,
const GrOpsRenderPass::StencilLoadAndStoreInfo& stencilLoadStore) {
SkASSERT(!fIsExecutingCommandBuffer_DebugOnly);
this->handleDirtyContext();
auto glRT = static_cast<GrGLRenderTarget*>(rt);
this->flushRenderTarget(glRT);
SkDEBUGCODE(fIsExecutingCommandBuffer_DebugOnly = true);
if (use_tiled_rendering(this->glCaps(), stencilLoadStore)) {
auto nativeBounds = GrNativeRect::MakeRelativeTo(origin, glRT->height(), bounds);
GrGLbitfield preserveMask = (GrLoadOp::kLoad == colorLoadStore.fLoadOp)
? GR_GL_COLOR_BUFFER_BIT0 : GR_GL_NONE;
SkASSERT(GrLoadOp::kLoad != stencilLoadStore.fLoadOp); // Handled by use_tiled_rendering().
GL_CALL(StartTiling(nativeBounds.fX, nativeBounds.fY, nativeBounds.fWidth,
nativeBounds.fHeight, preserveMask));
}
GrGLbitfield clearMask = 0;
if (GrLoadOp::kClear == colorLoadStore.fLoadOp) {
SkASSERT(!this->caps()->performColorClearsAsDraws());
this->flushClearColor(colorLoadStore.fClearColor);
this->flushColorWrite(true);
clearMask |= GR_GL_COLOR_BUFFER_BIT;
}
if (GrLoadOp::kClear == stencilLoadStore.fLoadOp) {
SkASSERT(!this->caps()->performStencilClearsAsDraws());
GL_CALL(StencilMask(0xffffffff));
GL_CALL(ClearStencil(0));
clearMask |= GR_GL_STENCIL_BUFFER_BIT;
}
if (clearMask) {
this->disableScissor();
this->disableWindowRectangles();
GL_CALL(Clear(clearMask));
}
}
void GrGLGpu::endCommandBuffer(GrRenderTarget* rt,
const GrOpsRenderPass::LoadAndStoreInfo& colorLoadStore,
const GrOpsRenderPass::StencilLoadAndStoreInfo& stencilLoadStore) {
SkASSERT(fIsExecutingCommandBuffer_DebugOnly);
this->handleDirtyContext();
if (rt->uniqueID() != fHWBoundRenderTargetUniqueID) {
// The framebuffer binding changed in the middle of a command buffer. We should have already
// printed a warning during onFBOChanged.
return;
}
if (GrGLCaps::kNone_InvalidateFBType != this->glCaps().invalidateFBType()) {
auto glRT = static_cast<GrGLRenderTarget*>(rt);
SkSTArray<2, GrGLenum> discardAttachments;
if (GrStoreOp::kDiscard == colorLoadStore.fStoreOp) {
discardAttachments.push_back(
(0 == glRT->renderFBOID()) ? GR_GL_COLOR : GR_GL_COLOR_ATTACHMENT0);
}
if (GrStoreOp::kDiscard == stencilLoadStore.fStoreOp) {
discardAttachments.push_back(
(0 == glRT->renderFBOID()) ? GR_GL_STENCIL : GR_GL_STENCIL_ATTACHMENT);
}
if (!discardAttachments.empty()) {
if (GrGLCaps::kInvalidate_InvalidateFBType == this->glCaps().invalidateFBType()) {
GL_CALL(InvalidateFramebuffer(GR_GL_FRAMEBUFFER, discardAttachments.count(),
discardAttachments.begin()));
} else {
SkASSERT(GrGLCaps::kDiscard_InvalidateFBType == this->glCaps().invalidateFBType());
GL_CALL(DiscardFramebuffer(GR_GL_FRAMEBUFFER, discardAttachments.count(),
discardAttachments.begin()));
}
}
}
if (use_tiled_rendering(this->glCaps(), stencilLoadStore)) {
GrGLbitfield preserveMask = (GrStoreOp::kStore == colorLoadStore.fStoreOp)
? GR_GL_COLOR_BUFFER_BIT0 : GR_GL_NONE;
// Handled by use_tiled_rendering().
SkASSERT(GrStoreOp::kStore != stencilLoadStore.fStoreOp);
GL_CALL(EndTiling(preserveMask));
}
SkDEBUGCODE(fIsExecutingCommandBuffer_DebugOnly = false);
}
void GrGLGpu::clearStencilClip(const GrFixedClip& clip,
bool insideStencilMask,
GrRenderTarget* target, GrSurfaceOrigin origin) {
SkASSERT(target);
SkASSERT(!this->caps()->performStencilClearsAsDraws());
this->handleDirtyContext();
GrStencilAttachment* sb = target->renderTargetPriv().getStencilAttachment();
// this should only be called internally when we know we have a
// stencil buffer.
SkASSERT(sb);
GrGLint stencilBitCount = sb->bits();
#if 0
SkASSERT(stencilBitCount > 0);
GrGLint clipStencilMask = (1 << (stencilBitCount - 1));
#else
// we could just clear the clip bit but when we go through
// ANGLE a partial stencil mask will cause clears to be
// turned into draws. Our contract on GrOpsTask says that
// changing the clip between stencil passes may or may not
// zero the client's clip bits. So we just clear the whole thing.
static const GrGLint clipStencilMask = ~0;
#endif
GrGLint value;
if (insideStencilMask) {
value = (1 << (stencilBitCount - 1));
} else {
value = 0;
}
GrGLRenderTarget* glRT = static_cast<GrGLRenderTarget*>(target);
this->flushRenderTargetNoColorWrites(glRT);
this->flushScissor(clip.scissorState(), glRT->width(), glRT->height(), origin);
this->flushWindowRectangles(clip.windowRectsState(), glRT, origin);
GL_CALL(StencilMask((uint32_t) clipStencilMask));
GL_CALL(ClearStencil(value));
GL_CALL(Clear(GR_GL_STENCIL_BUFFER_BIT));
fHWStencilSettings.invalidate();
}
bool GrGLGpu::readOrTransferPixelsFrom(GrSurface* surface, int left, int top, int width, int height,
GrColorType surfaceColorType, GrColorType dstColorType,
void* offsetOrPtr, int rowWidthInPixels) {
SkASSERT(surface);
auto format = surface->backendFormat().asGLFormat();
GrGLRenderTarget* renderTarget = static_cast<GrGLRenderTarget*>(surface->asRenderTarget());
if (!renderTarget && !this->glCaps().isFormatRenderable(format, 1)) {
return false;
}
GrGLenum externalFormat = 0;
GrGLenum externalType = 0;
this->glCaps().getReadPixelsFormat(surface->backendFormat().asGLFormat(),
surfaceColorType,
dstColorType,
&externalFormat,
&externalType);
if (!externalFormat || !externalType) {
return false;
}
if (renderTarget) {
if (renderTarget->numSamples() <= 1 ||
renderTarget->renderFBOID() == renderTarget->textureFBOID()) { // Also catches FBO 0.
SkASSERT(!renderTarget->requiresManualMSAAResolve());
this->flushRenderTargetNoColorWrites(renderTarget);
} else if (GrGLRenderTarget::kUnresolvableFBOID == renderTarget->textureFBOID()) {
SkASSERT(!renderTarget->requiresManualMSAAResolve());
return false;
} else {
SkASSERT(renderTarget->requiresManualMSAAResolve());
// we don't track the state of the READ FBO ID.
this->bindFramebuffer(GR_GL_READ_FRAMEBUFFER, renderTarget->textureFBOID());
}
} else {
// Use a temporary FBO.
this->bindSurfaceFBOForPixelOps(surface, 0, GR_GL_FRAMEBUFFER, kSrc_TempFBOTarget);
fHWBoundRenderTargetUniqueID.makeInvalid();
}
// the read rect is viewport-relative
GrNativeRect readRect = {left, top, width, height};
// determine if GL can read using the passed rowBytes or if we need a scratch buffer.
if (rowWidthInPixels != width) {
SkASSERT(this->glCaps().readPixelsRowBytesSupport());
GL_CALL(PixelStorei(GR_GL_PACK_ROW_LENGTH, rowWidthInPixels));
}
GL_CALL(PixelStorei(GR_GL_PACK_ALIGNMENT, 1));
bool reattachStencil = false;
if (this->glCaps().detachStencilFromMSAABuffersBeforeReadPixels() &&
renderTarget &&
renderTarget->renderTargetPriv().getStencilAttachment() &&
renderTarget->numSamples() > 1) {
// Fix Adreno devices that won't read from MSAA framebuffers with stencil attached
reattachStencil = true;
GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, GR_GL_STENCIL_ATTACHMENT,
GR_GL_RENDERBUFFER, 0));
}
GL_CALL(ReadPixels(readRect.fX, readRect.fY, readRect.fWidth, readRect.fHeight,
externalFormat, externalType, offsetOrPtr));
if (reattachStencil) {
GrGLStencilAttachment* stencilAttachment = static_cast<GrGLStencilAttachment*>(
renderTarget->renderTargetPriv().getStencilAttachment());
GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, GR_GL_STENCIL_ATTACHMENT,
GR_GL_RENDERBUFFER, stencilAttachment->renderbufferID()));
}
if (rowWidthInPixels != width) {
SkASSERT(this->glCaps().readPixelsRowBytesSupport());
GL_CALL(PixelStorei(GR_GL_PACK_ROW_LENGTH, 0));
}
if (!renderTarget) {
this->unbindSurfaceFBOForPixelOps(surface, 0, GR_GL_FRAMEBUFFER);
}
return true;
}
bool GrGLGpu::onReadPixels(GrSurface* surface, int left, int top, int width, int height,
GrColorType surfaceColorType, GrColorType dstColorType, void* buffer,
size_t rowBytes) {
SkASSERT(surface);
size_t bytesPerPixel = GrColorTypeBytesPerPixel(dstColorType);
// GL_PACK_ROW_LENGTH is in terms of pixels not bytes.
int rowPixelWidth;
if (rowBytes == SkToSizeT(width * bytesPerPixel)) {
rowPixelWidth = width;
} else {
SkASSERT(!(rowBytes % bytesPerPixel));
rowPixelWidth = rowBytes / bytesPerPixel;
}
return this->readOrTransferPixelsFrom(surface, left, top, width, height, surfaceColorType,
dstColorType, buffer, rowPixelWidth);
}
GrOpsRenderPass* GrGLGpu::getOpsRenderPass(
GrRenderTarget* rt, GrSurfaceOrigin origin, const SkIRect& bounds,
const GrOpsRenderPass::LoadAndStoreInfo& colorInfo,
const GrOpsRenderPass::StencilLoadAndStoreInfo& stencilInfo,
const SkTArray<GrSurfaceProxy*, true>& sampledProxies) {
if (!fCachedOpsRenderPass) {
fCachedOpsRenderPass.reset(new GrGLOpsRenderPass(this));
}
fCachedOpsRenderPass->set(rt, bounds, origin, colorInfo, stencilInfo);
return fCachedOpsRenderPass.get();
}
void GrGLGpu::flushRenderTarget(GrGLRenderTarget* target, GrSurfaceOrigin origin,
const SkIRect& bounds) {
this->flushRenderTargetNoColorWrites(target);
this->didWriteToSurface(target, origin, &bounds);
}
void GrGLGpu::flushRenderTarget(GrGLRenderTarget* target) {
this->flushRenderTargetNoColorWrites(target);
this->didWriteToSurface(target, kTopLeft_GrSurfaceOrigin, nullptr);
}
void GrGLGpu::flushRenderTargetNoColorWrites(GrGLRenderTarget* target) {
SkASSERT(target);
GrGpuResource::UniqueID rtID = target->uniqueID();
if (fHWBoundRenderTargetUniqueID != rtID) {
this->bindFramebuffer(GR_GL_FRAMEBUFFER, target->renderFBOID());
#ifdef SK_DEBUG
// don't do this check in Chromium -- this is causing
// lots of repeated command buffer flushes when the compositor is
// rendering with Ganesh, which is really slow; even too slow for
// Debug mode.
if (kChromium_GrGLDriver != this->glContext().driver()) {
GrGLenum status;
GL_CALL_RET(status, CheckFramebufferStatus(GR_GL_FRAMEBUFFER));
if (status != GR_GL_FRAMEBUFFER_COMPLETE) {
SkDebugf("GrGLGpu::flushRenderTarget glCheckFramebufferStatus %x\n", status);
}
}
#endif
fHWBoundRenderTargetUniqueID = rtID;
this->flushViewport(target->width(), target->height());
}
if (this->glCaps().srgbWriteControl()) {
this->flushFramebufferSRGB(this->caps()->isFormatSRGB(target->backendFormat()));
}
}
void GrGLGpu::flushFramebufferSRGB(bool enable) {
if (enable && kYes_TriState != fHWSRGBFramebuffer) {
GL_CALL(Enable(GR_GL_FRAMEBUFFER_SRGB));
fHWSRGBFramebuffer = kYes_TriState;
} else if (!enable && kNo_TriState != fHWSRGBFramebuffer) {
GL_CALL(Disable(GR_GL_FRAMEBUFFER_SRGB));
fHWSRGBFramebuffer = kNo_TriState;
}
}
void GrGLGpu::flushViewport(int width, int height) {
GrNativeRect viewport = {0, 0, width, height};
if (fHWViewport != viewport) {
GL_CALL(Viewport(viewport.fX, viewport.fY, viewport.fWidth, viewport.fHeight));
fHWViewport = viewport;
}
}
#define SWAP_PER_DRAW 0
#if SWAP_PER_DRAW
#if defined(SK_BUILD_FOR_MAC)
#include <AGL/agl.h>
#elif defined(SK_BUILD_FOR_WIN)
#include <gl/GL.h>
void SwapBuf() {
DWORD procID = GetCurrentProcessId();
HWND hwnd = GetTopWindow(GetDesktopWindow());
while(hwnd) {
DWORD wndProcID = 0;
GetWindowThreadProcessId(hwnd, &wndProcID);
if(wndProcID == procID) {
SwapBuffers(GetDC(hwnd));
}
hwnd = GetNextWindow(hwnd, GW_HWNDNEXT);
}
}
#endif
#endif
void GrGLGpu::draw(GrRenderTarget* renderTarget,
const GrProgramInfo& programInfo,
const GrMesh meshes[],
int meshCount) {
this->handleDirtyContext();
SkASSERT(meshCount); // guaranteed by GrOpsRenderPass::draw
if (!this->flushGLState(renderTarget, programInfo)) {
return;
}
bool hasDynamicScissors = programInfo.hasDynamicScissors();
bool hasDynamicPrimProcTextures = programInfo.hasDynamicPrimProcTextures();
for (int m = 0; m < meshCount; ++m) {
SkASSERT(meshes[m].primitiveType() == programInfo.primitiveType());
if (auto barrierType = programInfo.pipeline().xferBarrierType(renderTarget->asTexture(),
*this->caps())) {
this->xferBarrier(renderTarget, barrierType);
}
if (hasDynamicScissors) {
GrGLRenderTarget* glRT = static_cast<GrGLRenderTarget*>(renderTarget);
this->flushScissor(GrScissorState(programInfo.dynamicScissor(m)),
glRT->width(), glRT->height(), programInfo.origin());
}
if (hasDynamicPrimProcTextures) {
auto texProxyArray = programInfo.dynamicPrimProcTextures(m);
fHWProgram->updatePrimitiveProcessorTextureBindings(programInfo.primProc(),
texProxyArray);
}
if (this->glCaps().requiresCullFaceEnableDisableWhenDrawingLinesAfterNonLines() &&
GrIsPrimTypeLines(meshes[m].primitiveType()) &&
!GrIsPrimTypeLines(fLastPrimitiveType)) {
GL_CALL(Enable(GR_GL_CULL_FACE));
GL_CALL(Disable(GR_GL_CULL_FACE));
}
meshes[m].sendToGpu(this);
fLastPrimitiveType = meshes[m].primitiveType();
}
#if SWAP_PER_DRAW
glFlush();
#if defined(SK_BUILD_FOR_MAC)
aglSwapBuffers(aglGetCurrentContext());
int set_a_break_pt_here = 9;
aglSwapBuffers(aglGetCurrentContext());
#elif defined(SK_BUILD_FOR_WIN)
SwapBuf();
int set_a_break_pt_here = 9;
SwapBuf();
#endif
#endif
}
static GrGLenum gr_primitive_type_to_gl_mode(GrPrimitiveType primitiveType) {
switch (primitiveType) {
case GrPrimitiveType::kTriangles:
return GR_GL_TRIANGLES;
case GrPrimitiveType::kTriangleStrip:
return GR_GL_TRIANGLE_STRIP;
case GrPrimitiveType::kPoints:
return GR_GL_POINTS;
case GrPrimitiveType::kLines:
return GR_GL_LINES;
case GrPrimitiveType::kLineStrip:
return GR_GL_LINE_STRIP;
case GrPrimitiveType::kPath:
SK_ABORT("non-mesh-based GrPrimitiveType");
return 0;
}
SK_ABORT("invalid GrPrimitiveType");
}
void GrGLGpu::sendMeshToGpu(GrPrimitiveType primitiveType, const GrBuffer* vertexBuffer,
int vertexCount, int baseVertex) {
const GrGLenum glPrimType = gr_primitive_type_to_gl_mode(primitiveType);
if (this->glCaps().drawArraysBaseVertexIsBroken()) {
this->setupGeometry(nullptr, vertexBuffer, baseVertex, nullptr, 0, GrPrimitiveRestart::kNo);
GL_CALL(DrawArrays(glPrimType, 0, vertexCount));
} else {
this->setupGeometry(nullptr, vertexBuffer, 0, nullptr, 0, GrPrimitiveRestart::kNo);
GL_CALL(DrawArrays(glPrimType, baseVertex, vertexCount));
}
fStats.incNumDraws();
}
static const GrGLvoid* element_ptr(const GrBuffer* indexBuffer, int baseIndex) {
size_t baseOffset = baseIndex * sizeof(uint16_t);
if (indexBuffer->isCpuBuffer()) {
return static_cast<const GrCpuBuffer*>(indexBuffer)->data() + baseOffset;
} else {
return reinterpret_cast<const GrGLvoid*>(baseOffset);
}
}
void GrGLGpu::sendIndexedMeshToGpu(GrPrimitiveType primitiveType, const GrBuffer* indexBuffer,
int indexCount, int baseIndex, uint16_t minIndexValue,
uint16_t maxIndexValue, const GrBuffer* vertexBuffer,
int baseVertex, GrPrimitiveRestart enablePrimitiveRestart) {
const GrGLenum glPrimType = gr_primitive_type_to_gl_mode(primitiveType);
const GrGLvoid* elementPtr = element_ptr(indexBuffer, baseIndex);
this->setupGeometry(indexBuffer, vertexBuffer, baseVertex, nullptr, 0, enablePrimitiveRestart);
if (this->glCaps().drawRangeElementsSupport()) {
GL_CALL(DrawRangeElements(glPrimType, minIndexValue, maxIndexValue, indexCount,
GR_GL_UNSIGNED_SHORT, elementPtr));
} else {
GL_CALL(DrawElements(glPrimType, indexCount, GR_GL_UNSIGNED_SHORT, elementPtr));
}
fStats.incNumDraws();
}
void GrGLGpu::sendInstancedMeshToGpu(GrPrimitiveType primitiveType, const GrBuffer* vertexBuffer,
int vertexCount, int baseVertex,
const GrBuffer* instanceBuffer, int instanceCount,
int baseInstance) {
GrGLenum glPrimType = gr_primitive_type_to_gl_mode(primitiveType);
int maxInstances = this->glCaps().maxInstancesPerDrawWithoutCrashing(instanceCount);
for (int i = 0; i < instanceCount; i += maxInstances) {
this->setupGeometry(nullptr, vertexBuffer, 0, instanceBuffer, baseInstance + i,
GrPrimitiveRestart::kNo);
GL_CALL(DrawArraysInstanced(glPrimType, baseVertex, vertexCount,
SkTMin(instanceCount - i, maxInstances)));
fStats.incNumDraws();
}
}
void GrGLGpu::sendIndexedInstancedMeshToGpu(GrPrimitiveType primitiveType,
const GrBuffer* indexBuffer, int indexCount,
int baseIndex, const GrBuffer* vertexBuffer,
int baseVertex, const GrBuffer* instanceBuffer,
int instanceCount, int baseInstance,
GrPrimitiveRestart enablePrimitiveRestart) {
const GrGLenum glPrimType = gr_primitive_type_to_gl_mode(primitiveType);
const GrGLvoid* elementPtr = element_ptr(indexBuffer, baseIndex);
int maxInstances = this->glCaps().maxInstancesPerDrawWithoutCrashing(instanceCount);
for (int i = 0; i < instanceCount; i += maxInstances) {
this->setupGeometry(indexBuffer, vertexBuffer, baseVertex, instanceBuffer, baseInstance + i,
enablePrimitiveRestart);
GL_CALL(DrawElementsInstanced(glPrimType, indexCount, GR_GL_UNSIGNED_SHORT, elementPtr,
SkTMin(instanceCount - i, maxInstances)));
fStats.incNumDraws();
}
}
void GrGLGpu::onResolveRenderTarget(GrRenderTarget* target, const SkIRect& resolveRect,
GrSurfaceOrigin resolveOrigin, ForExternalIO) {
// Some extensions automatically resolves the texture when it is read.
SkASSERT(this->glCaps().usesMSAARenderBuffers());
GrGLRenderTarget* rt = static_cast<GrGLRenderTarget*>(target);
SkASSERT(rt->textureFBOID() != rt->renderFBOID());
SkASSERT(rt->textureFBOID() != 0 && rt->renderFBOID() != 0);
this->bindFramebuffer(GR_GL_READ_FRAMEBUFFER, rt->renderFBOID());
this->bindFramebuffer(GR_GL_DRAW_FRAMEBUFFER, rt->textureFBOID());
// make sure we go through flushRenderTarget() since we've modified
// the bound DRAW FBO ID.
fHWBoundRenderTargetUniqueID.makeInvalid();
if (GrGLCaps::kES_Apple_MSFBOType == this->glCaps().msFBOType()) {
// Apple's extension uses the scissor as the blit bounds.
GrScissorState scissorState;
scissorState.set(resolveRect);
this->flushScissor(scissorState, rt->width(), rt->height(), resolveOrigin);
this->disableWindowRectangles();
GL_CALL(ResolveMultisampleFramebuffer());
} else {
int l, b, r, t;
if (GrGLCaps::kResolveMustBeFull_BlitFrambufferFlag &
this->glCaps().blitFramebufferSupportFlags()) {
l = 0;
b = 0;
r = target->width();
t = target->height();
} else {
auto rect = GrNativeRect::MakeRelativeTo(
resolveOrigin, rt->height(), resolveRect);
l = rect.fX;
b = rect.fY;
r = rect.fX + rect.fWidth;
t = rect.fY + rect.fHeight;
}
// BlitFrameBuffer respects the scissor, so disable it.
this->disableScissor();
this->disableWindowRectangles();
GL_CALL(BlitFramebuffer(l, b, r, t, l, b, r, t, GR_GL_COLOR_BUFFER_BIT, GR_GL_NEAREST));
}
}
namespace {
GrGLenum gr_to_gl_stencil_op(GrStencilOp op) {
static const GrGLenum gTable[kGrStencilOpCount] = {
GR_GL_KEEP, // kKeep
GR_GL_ZERO, // kZero
GR_GL_REPLACE, // kReplace
GR_GL_INVERT, // kInvert
GR_GL_INCR_WRAP, // kIncWrap
GR_GL_DECR_WRAP, // kDecWrap
GR_GL_INCR, // kIncClamp
GR_GL_DECR, // kDecClamp
};
GR_STATIC_ASSERT(0 == (int)GrStencilOp::kKeep);
GR_STATIC_ASSERT(1 == (int)GrStencilOp::kZero);
GR_STATIC_ASSERT(2 == (int)GrStencilOp::kReplace);
GR_STATIC_ASSERT(3 == (int)GrStencilOp::kInvert);
GR_STATIC_ASSERT(4 == (int)GrStencilOp::kIncWrap);
GR_STATIC_ASSERT(5 == (int)GrStencilOp::kDecWrap);
GR_STATIC_ASSERT(6 == (int)GrStencilOp::kIncClamp);
GR_STATIC_ASSERT(7 == (int)GrStencilOp::kDecClamp);
SkASSERT(op < (GrStencilOp)kGrStencilOpCount);
return gTable[(int)op];
}
void set_gl_stencil(const GrGLInterface* gl,
const GrStencilSettings::Face& face,
GrGLenum glFace) {
GrGLenum glFunc = GrToGLStencilFunc(face.fTest);
GrGLenum glFailOp = gr_to_gl_stencil_op(face.fFailOp);
GrGLenum glPassOp = gr_to_gl_stencil_op(face.fPassOp);
GrGLint ref = face.fRef;
GrGLint mask = face.fTestMask;
GrGLint writeMask = face.fWriteMask;
if (GR_GL_FRONT_AND_BACK == glFace) {
// we call the combined func just in case separate stencil is not
// supported.
GR_GL_CALL(gl, StencilFunc(glFunc, ref, mask));
GR_GL_CALL(gl, StencilMask(writeMask));
GR_GL_CALL(gl, StencilOp(glFailOp, GR_GL_KEEP, glPassOp));
} else {
GR_GL_CALL(gl, StencilFuncSeparate(glFace, glFunc, ref, mask));
GR_GL_CALL(gl, StencilMaskSeparate(glFace, writeMask));
GR_GL_CALL(gl, StencilOpSeparate(glFace, glFailOp, GR_GL_KEEP, glPassOp));
}
}
}
void GrGLGpu::flushStencil(const GrStencilSettings& stencilSettings, GrSurfaceOrigin origin) {
if (stencilSettings.isDisabled()) {
this->disableStencil();
} else if (fHWStencilSettings != stencilSettings ||
(stencilSettings.isTwoSided() && fHWStencilOrigin != origin)) {
if (kYes_TriState != fHWStencilTestEnabled) {
GL_CALL(Enable(GR_GL_STENCIL_TEST));
fHWStencilTestEnabled = kYes_TriState;
}
if (!stencilSettings.isTwoSided()) {
set_gl_stencil(this->glInterface(), stencilSettings.singleSidedFace(),
GR_GL_FRONT_AND_BACK);
} else {
set_gl_stencil(this->glInterface(), stencilSettings.postOriginCWFace(origin),
GR_GL_FRONT);
set_gl_stencil(this->glInterface(), stencilSettings.postOriginCCWFace(origin),
GR_GL_BACK);
}
fHWStencilSettings = stencilSettings;
fHWStencilOrigin = origin;
}
}
void GrGLGpu::disableStencil() {
if (kNo_TriState != fHWStencilTestEnabled) {
GL_CALL(Disable(GR_GL_STENCIL_TEST));
fHWStencilTestEnabled = kNo_TriState;
fHWStencilSettings.invalidate();
}
}
void GrGLGpu::flushHWAAState(GrRenderTarget* rt, bool useHWAA) {
// rt is only optional if useHWAA is false.
SkASSERT(rt || !useHWAA);
#ifdef SK_DEBUG
if (useHWAA && rt->numSamples() <= 1) {
SkASSERT(this->caps()->mixedSamplesSupport());
SkASSERT(0 != static_cast<GrGLRenderTarget*>(rt)->renderFBOID());
SkASSERT(rt->renderTargetPriv().getStencilAttachment());
}
#endif
if (this->caps()->multisampleDisableSupport()) {
if (useHWAA) {
if (kYes_TriState != fMSAAEnabled) {
GL_CALL(Enable(GR_GL_MULTISAMPLE));
fMSAAEnabled = kYes_TriState;
}
} else {
if (kNo_TriState != fMSAAEnabled) {
GL_CALL(Disable(GR_GL_MULTISAMPLE));
fMSAAEnabled = kNo_TriState;
}
}
}
}
void GrGLGpu::flushBlendAndColorWrite(
const GrXferProcessor::BlendInfo& blendInfo, const GrSwizzle& swizzle) {
if (this->glCaps().neverDisableColorWrites() && !blendInfo.fWriteColor) {
// We need to work around a driver bug by using a blend state that preserves the dst color,
// rather than disabling color writes.
GrXferProcessor::BlendInfo preserveDstBlend;
preserveDstBlend.fSrcBlend = kZero_GrBlendCoeff;
preserveDstBlend.fDstBlend = kOne_GrBlendCoeff;
this->flushBlendAndColorWrite(preserveDstBlend, swizzle);
return;
}
GrBlendEquation equation = blendInfo.fEquation;
GrBlendCoeff srcCoeff = blendInfo.fSrcBlend;
GrBlendCoeff dstCoeff = blendInfo.fDstBlend;
// Any optimization to disable blending should have already been applied and
// tweaked the equation to "add" or "subtract", and the coeffs to (1, 0).
bool blendOff =
((kAdd_GrBlendEquation == equation || kSubtract_GrBlendEquation == equation) &&
kOne_GrBlendCoeff == srcCoeff && kZero_GrBlendCoeff == dstCoeff) ||
!blendInfo.fWriteColor;
if (blendOff) {
if (kNo_TriState != fHWBlendState.fEnabled) {
GL_CALL(Disable(GR_GL_BLEND));
// Workaround for the ARM KHR_blend_equation_advanced blacklist issue
// https://code.google.com/p/skia/issues/detail?id=3943
if (kARM_GrGLVendor == this->ctxInfo().vendor() &&
GrBlendEquationIsAdvanced(fHWBlendState.fEquation)) {
SkASSERT(this->caps()->advancedBlendEquationSupport());
// Set to any basic blending equation.
GrBlendEquation blend_equation = kAdd_GrBlendEquation;
GL_CALL(BlendEquation(gXfermodeEquation2Blend[blend_equation]));
fHWBlendState.fEquation = blend_equation;
}
fHWBlendState.fEnabled = kNo_TriState;
}
} else {
if (kYes_TriState != fHWBlendState.fEnabled) {
GL_CALL(Enable(GR_GL_BLEND));
fHWBlendState.fEnabled = kYes_TriState;
}
if (fHWBlendState.fEquation != equation) {
GL_CALL(BlendEquation(gXfermodeEquation2Blend[equation]));
fHWBlendState.fEquation = equation;
}
if (GrBlendEquationIsAdvanced(equation)) {
SkASSERT(this->caps()->advancedBlendEquationSupport());
// Advanced equations have no other blend state.
return;
}
if (fHWBlendState.fSrcCoeff != srcCoeff || fHWBlendState.fDstCoeff != dstCoeff) {
GL_CALL(BlendFunc(gXfermodeCoeff2Blend[srcCoeff],
gXfermodeCoeff2Blend[dstCoeff]));
fHWBlendState.fSrcCoeff = srcCoeff;
fHWBlendState.fDstCoeff = dstCoeff;
}
if ((BlendCoeffReferencesConstant(srcCoeff) || BlendCoeffReferencesConstant(dstCoeff))) {
SkPMColor4f blendConst = swizzle.applyTo(blendInfo.fBlendConstant);
if (!fHWBlendState.fConstColorValid || fHWBlendState.fConstColor != blendConst) {
GL_CALL(BlendColor(blendConst.fR, blendConst.fG, blendConst.fB, blendConst.fA));
fHWBlendState.fConstColor = blendConst;
fHWBlendState.fConstColorValid = true;
}
}
}
this->flushColorWrite(blendInfo.fWriteColor);
}
static void get_gl_swizzle_values(const GrSwizzle& swizzle, GrGLenum glValues[4]) {
for (int i = 0; i < 4; ++i) {
switch (swizzle[i]) {
case 'r': glValues[i] = GR_GL_RED; break;
case 'g': glValues[i] = GR_GL_GREEN; break;
case 'b': glValues[i] = GR_GL_BLUE; break;
case 'a': glValues[i] = GR_GL_ALPHA; break;
case '0': glValues[i] = GR_GL_ZERO; break;
case '1': glValues[i] = GR_GL_ONE; break;
default: SK_ABORT("Unsupported component");
}
}
}
void GrGLGpu::bindTexture(int unitIdx, GrSamplerState samplerState, const GrSwizzle& swizzle,
GrGLTexture* texture) {
SkASSERT(texture);
#ifdef SK_DEBUG
if (!this->caps()->npotTextureTileSupport()) {
if (samplerState.isRepeated()) {
const int w = texture->width();
const int h = texture->height();
SkASSERT(SkIsPow2(w) && SkIsPow2(h));
}
}
#endif
GrGpuResource::UniqueID textureID = texture->uniqueID();
GrGLenum target = texture->target();
if (fHWTextureUnitBindings[unitIdx].boundID(target) != textureID) {
this->setTextureUnit(unitIdx);
GL_CALL(BindTexture(target, texture->textureID()));
fHWTextureUnitBindings[unitIdx].setBoundID(target, textureID);
}
if (samplerState.filter() == GrSamplerState::Filter::kMipMap) {
if (!this->caps()->mipMapSupport() ||
texture->texturePriv().mipMapped() == GrMipMapped::kNo) {
samplerState.setFilterMode(GrSamplerState::Filter::kBilerp);
}
}
#ifdef SK_DEBUG
// We were supposed to ensure MipMaps were up-to-date before getting here.
if (samplerState.filter() == GrSamplerState::Filter::kMipMap) {
SkASSERT(!texture->texturePriv().mipMapsAreDirty());
}
#endif
auto timestamp = texture->parameters()->resetTimestamp();
bool setAll = timestamp < fResetTimestampForTextureParameters;
const GrGLTextureParameters::SamplerOverriddenState* samplerStateToRecord = nullptr;
GrGLTextureParameters::SamplerOverriddenState newSamplerState;
if (fSamplerObjectCache) {
fSamplerObjectCache->bindSampler(unitIdx, samplerState);
} else {
const GrGLTextureParameters::SamplerOverriddenState& oldSamplerState =
texture->parameters()->samplerOverriddenState();
samplerStateToRecord = &newSamplerState;
newSamplerState.fMinFilter = filter_to_gl_min_filter(samplerState.filter());
newSamplerState.fMagFilter = filter_to_gl_mag_filter(samplerState.filter());
newSamplerState.fWrapS = wrap_mode_to_gl_wrap(samplerState.wrapModeX(), this->glCaps());
newSamplerState.fWrapT = wrap_mode_to_gl_wrap(samplerState.wrapModeY(), this->glCaps());
// These are the OpenGL default values.
newSamplerState.fMinLOD = -1000.f;
newSamplerState.fMaxLOD = 1000.f;
if (setAll || newSamplerState.fMagFilter != oldSamplerState.fMagFilter) {
this->setTextureUnit(unitIdx);
GL_CALL(TexParameteri(target, GR_GL_TEXTURE_MAG_FILTER, newSamplerState.fMagFilter));
}
if (setAll || newSamplerState.fMinFilter != oldSamplerState.fMinFilter) {
this->setTextureUnit(unitIdx);
GL_CALL(TexParameteri(target, GR_GL_TEXTURE_MIN_FILTER, newSamplerState.fMinFilter));
}
if (this->glCaps().mipMapLevelAndLodControlSupport()) {
if (setAll || newSamplerState.fMinLOD != oldSamplerState.fMinLOD) {
this->setTextureUnit(unitIdx);
GL_CALL(TexParameterf(target, GR_GL_TEXTURE_MIN_LOD, newSamplerState.fMinLOD));
}
if (setAll || newSamplerState.fMaxLOD != oldSamplerState.fMaxLOD) {
this->setTextureUnit(unitIdx);
GL_CALL(TexParameterf(target, GR_GL_TEXTURE_MAX_LOD, newSamplerState.fMaxLOD));
}
}
if (setAll || newSamplerState.fWrapS != oldSamplerState.fWrapS) {
this->setTextureUnit(unitIdx);
GL_CALL(TexParameteri(target, GR_GL_TEXTURE_WRAP_S, newSamplerState.fWrapS));
}
if (setAll || newSamplerState.fWrapT != oldSamplerState.fWrapT) {
this->setTextureUnit(unitIdx);
GL_CALL(TexParameteri(target, GR_GL_TEXTURE_WRAP_T, newSamplerState.fWrapT));
}
if (this->glCaps().clampToBorderSupport()) {
// Make sure the border color is transparent black (the default)
if (setAll || oldSamplerState.fBorderColorInvalid) {
this->setTextureUnit(unitIdx);
static const GrGLfloat kTransparentBlack[4] = {0.f, 0.f, 0.f, 0.f};
GL_CALL(TexParameterfv(target, GR_GL_TEXTURE_BORDER_COLOR, kTransparentBlack));
}
}
}
GrGLTextureParameters::NonsamplerState newNonsamplerState;
newNonsamplerState.fBaseMipMapLevel = 0;
newNonsamplerState.fMaxMipMapLevel = texture->texturePriv().maxMipMapLevel();
const GrGLTextureParameters::NonsamplerState& oldNonsamplerState =
texture->parameters()->nonsamplerState();
if (!this->caps()->shaderCaps()->textureSwizzleAppliedInShader()) {
newNonsamplerState.fSwizzleKey = swizzle.asKey();
if (setAll || swizzle.asKey() != oldNonsamplerState.fSwizzleKey) {
GrGLenum glValues[4];
get_gl_swizzle_values(swizzle, glValues);
this->setTextureUnit(unitIdx);
if (GR_IS_GR_GL(this->glStandard())) {
GR_STATIC_ASSERT(sizeof(glValues[0]) == sizeof(GrGLint));
GL_CALL(TexParameteriv(target, GR_GL_TEXTURE_SWIZZLE_RGBA,
reinterpret_cast<const GrGLint*>(glValues)));
} else if (GR_IS_GR_GL_ES(this->glStandard())) {
// ES3 added swizzle support but not GL_TEXTURE_SWIZZLE_RGBA.
GL_CALL(TexParameteri(target, GR_GL_TEXTURE_SWIZZLE_R, glValues[0]));
GL_CALL(TexParameteri(target, GR_GL_TEXTURE_SWIZZLE_G, glValues[1]));
GL_CALL(TexParameteri(target, GR_GL_TEXTURE_SWIZZLE_B, glValues[2]));
GL_CALL(TexParameteri(target, GR_GL_TEXTURE_SWIZZLE_A, glValues[3]));
}
}
}
// These are not supported in ES2 contexts
if (this->glCaps().mipMapLevelAndLodControlSupport() &&
(texture->texturePriv().textureType() != GrTextureType::kExternal ||
!this->glCaps().dontSetBaseOrMaxLevelForExternalTextures())) {
if (newNonsamplerState.fBaseMipMapLevel != oldNonsamplerState.fBaseMipMapLevel) {
this->setTextureUnit(unitIdx);
GL_CALL(TexParameteri(target, GR_GL_TEXTURE_BASE_LEVEL,
newNonsamplerState.fBaseMipMapLevel));
}
if (newNonsamplerState.fMaxMipMapLevel != oldNonsamplerState.fMaxMipMapLevel) {
this->setTextureUnit(unitIdx);
GL_CALL(TexParameteri(target, GR_GL_TEXTURE_MAX_LEVEL,
newNonsamplerState.fMaxMipMapLevel));
}
}
texture->parameters()->set(samplerStateToRecord, newNonsamplerState,
fResetTimestampForTextureParameters);
}
void GrGLGpu::onResetTextureBindings() {
static constexpr GrGLenum kTargets[] = {GR_GL_TEXTURE_2D, GR_GL_TEXTURE_RECTANGLE,
GR_GL_TEXTURE_EXTERNAL};
for (int i = 0; i < this->numTextureUnits(); ++i) {
this->setTextureUnit(i);
for (auto target : kTargets) {
if (fHWTextureUnitBindings[i].hasBeenModified(target)) {
GL_CALL(BindTexture(target, 0));
}
}
fHWTextureUnitBindings[i].invalidateAllTargets(true);
}
}
void GrGLGpu::flushColorWrite(bool writeColor) {
if (!writeColor) {
if (kNo_TriState != fHWWriteToColor) {
GL_CALL(ColorMask(GR_GL_FALSE, GR_GL_FALSE,
GR_GL_FALSE, GR_GL_FALSE));
fHWWriteToColor = kNo_TriState;
}
} else {
if (kYes_TriState != fHWWriteToColor) {
GL_CALL(ColorMask(GR_GL_TRUE, GR_GL_TRUE, GR_GL_TRUE, GR_GL_TRUE));
fHWWriteToColor = kYes_TriState;
}
}
}
void GrGLGpu::flushClearColor(const SkPMColor4f& color) {
GrGLfloat r = color.fR, g = color.fG, b = color.fB, a = color.fA;
if (this->glCaps().clearToBoundaryValuesIsBroken() &&
(1 == r || 0 == r) && (1 == g || 0 == g) && (1 == b || 0 == b) && (1 == a || 0 == a)) {
static const GrGLfloat safeAlpha1 = nextafter(1.f, 2.f);
static const GrGLfloat safeAlpha0 = nextafter(0.f, -1.f);
a = (1 == a) ? safeAlpha1 : safeAlpha0;
}
if (r != fHWClearColor[0] || g != fHWClearColor[1] ||
b != fHWClearColor[2] || a != fHWClearColor[3]) {
GL_CALL(ClearColor(r, g, b, a));
fHWClearColor[0] = r;
fHWClearColor[1] = g;
fHWClearColor[2] = b;
fHWClearColor[3] = a;
}
}
void GrGLGpu::setTextureUnit(int unit) {
SkASSERT(unit >= 0 && unit < this->numTextureUnits());
if (unit != fHWActiveTextureUnitIdx) {
GL_CALL(ActiveTexture(GR_GL_TEXTURE0 + unit));
fHWActiveTextureUnitIdx = unit;
}
}
void GrGLGpu::bindTextureToScratchUnit(GrGLenum target, GrGLint textureID) {
// Bind the last texture unit since it is the least likely to be used by GrGLProgram.
int lastUnitIdx = this->numTextureUnits() - 1;
if (lastUnitIdx != fHWActiveTextureUnitIdx) {
GL_CALL(ActiveTexture(GR_GL_TEXTURE0 + lastUnitIdx));
fHWActiveTextureUnitIdx = lastUnitIdx;
}
// Clear out the this field so that if a GrGLProgram does use this unit it will rebind the
// correct texture.
fHWTextureUnitBindings[lastUnitIdx].invalidateForScratchUse(target);
GL_CALL(BindTexture(target, textureID));
}
// Determines whether glBlitFramebuffer could be used between src and dst by onCopySurface.
static inline bool can_blit_framebuffer_for_copy_surface(const GrSurface* dst,
const GrSurface* src,
const SkIRect& srcRect,
const SkIPoint& dstPoint,
const GrGLCaps& caps) {
int dstSampleCnt = 0;
int srcSampleCnt = 0;
if (const GrRenderTarget* rt = dst->asRenderTarget()) {
dstSampleCnt = rt->numSamples();
}
if (const GrRenderTarget* rt = src->asRenderTarget()) {
srcSampleCnt = rt->numSamples();
}
SkASSERT((dstSampleCnt > 0) == SkToBool(dst->asRenderTarget()));
SkASSERT((srcSampleCnt > 0) == SkToBool(src->asRenderTarget()));
GrGLFormat dstFormat = dst->backendFormat().asGLFormat();
GrGLFormat srcFormat = src->backendFormat().asGLFormat();
const GrGLTexture* dstTex = static_cast<const GrGLTexture*>(dst->asTexture());
const GrGLTexture* srcTex = static_cast<const GrGLTexture*>(src->asTexture());
GrTextureType dstTexType;
GrTextureType* dstTexTypePtr = nullptr;
GrTextureType srcTexType;
GrTextureType* srcTexTypePtr = nullptr;
if (dstTex) {
dstTexType = dstTex->texturePriv().textureType();
dstTexTypePtr = &dstTexType;
}
if (srcTex) {
srcTexType = srcTex->texturePriv().textureType();
srcTexTypePtr = &srcTexType;
}
return caps.canCopyAsBlit(dstFormat, dstSampleCnt, dstTexTypePtr,
srcFormat, srcSampleCnt, srcTexTypePtr,
src->getBoundsRect(), true, srcRect, dstPoint);
}
static bool rt_has_msaa_render_buffer(const GrGLRenderTarget* rt, const GrGLCaps& glCaps) {
// A RT has a separate MSAA renderbuffer if:
// 1) It's multisampled
// 2) We're using an extension with separate MSAA renderbuffers
// 3) It's not FBO 0, which is special and always auto-resolves
return rt->numSamples() > 1 && glCaps.usesMSAARenderBuffers() && rt->renderFBOID() != 0;
}
static inline bool can_copy_texsubimage(const GrSurface* dst, const GrSurface* src,
const GrGLCaps& caps) {
const GrGLRenderTarget* dstRT = static_cast<const GrGLRenderTarget*>(dst->asRenderTarget());
const GrGLRenderTarget* srcRT = static_cast<const GrGLRenderTarget*>(src->asRenderTarget());
const GrGLTexture* dstTex = static_cast<const GrGLTexture*>(dst->asTexture());
const GrGLTexture* srcTex = static_cast<const GrGLTexture*>(src->asTexture());
bool dstHasMSAARenderBuffer = dstRT ? rt_has_msaa_render_buffer(dstRT, caps) : false;
bool srcHasMSAARenderBuffer = srcRT ? rt_has_msaa_render_buffer(srcRT, caps) : false;
GrGLFormat dstFormat = dst->backendFormat().asGLFormat();
GrGLFormat srcFormat = src->backendFormat().asGLFormat();
GrTextureType dstTexType;
GrTextureType* dstTexTypePtr = nullptr;
GrTextureType srcTexType;
GrTextureType* srcTexTypePtr = nullptr;
if (dstTex) {
dstTexType = dstTex->texturePriv().textureType();
dstTexTypePtr = &dstTexType;
}
if (srcTex) {
srcTexType = srcTex->texturePriv().textureType();
srcTexTypePtr = &srcTexType;
}
return caps.canCopyTexSubImage(dstFormat, dstHasMSAARenderBuffer, dstTexTypePtr,
srcFormat, srcHasMSAARenderBuffer, srcTexTypePtr);
}
// If a temporary FBO was created, its non-zero ID is returned.
void GrGLGpu::bindSurfaceFBOForPixelOps(GrSurface* surface, int mipLevel, GrGLenum fboTarget,
TempFBOTarget tempFBOTarget) {
GrGLRenderTarget* rt = static_cast<GrGLRenderTarget*>(surface->asRenderTarget());
if (!rt || mipLevel > 0) {
SkASSERT(surface->asTexture());
GrGLTexture* texture = static_cast<GrGLTexture*>(surface->asTexture());
GrGLuint texID = texture->textureID();
GrGLenum target = texture->target();
GrGLuint* tempFBOID;
tempFBOID = kSrc_TempFBOTarget == tempFBOTarget ? &fTempSrcFBOID : &fTempDstFBOID;
if (0 == *tempFBOID) {
GR_GL_CALL(this->glInterface(), GenFramebuffers(1, tempFBOID));
}
this->bindFramebuffer(fboTarget, *tempFBOID);
GR_GL_CALL(
this->glInterface(),
FramebufferTexture2D(fboTarget, GR_GL_COLOR_ATTACHMENT0, target, texID, mipLevel));
if (mipLevel == 0) {
texture->baseLevelWasBoundToFBO();
}
} else {
this->bindFramebuffer(fboTarget, rt->renderFBOID());
}
}
void GrGLGpu::unbindSurfaceFBOForPixelOps(GrSurface* surface, int mipLevel, GrGLenum fboTarget) {
// bindSurfaceFBOForPixelOps temporarily binds textures that are not render targets to
if (mipLevel > 0 || !surface->asRenderTarget()) {
SkASSERT(surface->asTexture());
GrGLenum textureTarget = static_cast<GrGLTexture*>(surface->asTexture())->target();
GR_GL_CALL(this->glInterface(), FramebufferTexture2D(fboTarget,
GR_GL_COLOR_ATTACHMENT0,
textureTarget,
0,
0));
}
}
void GrGLGpu::onFBOChanged() {
if (this->caps()->workarounds().flush_on_framebuffer_change ||
this->caps()->workarounds().restore_scissor_on_fbo_change) {
GL_CALL(Flush());
}
#ifdef SK_DEBUG
if (fIsExecutingCommandBuffer_DebugOnly) {
SkDebugf("WARNING: GL FBO binding changed while executing a command buffer. "
"This will severely hurt performance.\n");
}
#endif
}
void GrGLGpu::bindFramebuffer(GrGLenum target, GrGLuint fboid) {
fStats.incRenderTargetBinds();
GL_CALL(BindFramebuffer(target, fboid));
if (target == GR_GL_FRAMEBUFFER || target == GR_GL_DRAW_FRAMEBUFFER) {
fBoundDrawFramebuffer = fboid;
}
if (this->caps()->workarounds().restore_scissor_on_fbo_change) {
// The driver forgets the correct scissor when modifying the FBO binding.
if (!fHWScissorSettings.fRect.isInvalid()) {
const GrNativeRect& r = fHWScissorSettings.fRect;
GL_CALL(Scissor(r.fX, r.fY, r.fWidth, r.fHeight));
}
}
this->onFBOChanged();
}
void GrGLGpu::deleteFramebuffer(GrGLuint fboid) {
if (fboid == fBoundDrawFramebuffer &&
this->caps()->workarounds().unbind_attachments_on_bound_render_fbo_delete) {
// This workaround only applies to deleting currently bound framebuffers
// on Adreno 420. Because this is a somewhat rare case, instead of
// tracking all the attachments of every framebuffer instead just always
// unbind all attachments.
GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, GR_GL_COLOR_ATTACHMENT0,
GR_GL_RENDERBUFFER, 0));
GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, GR_GL_STENCIL_ATTACHMENT,
GR_GL_RENDERBUFFER, 0));
GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, GR_GL_DEPTH_ATTACHMENT,
GR_GL_RENDERBUFFER, 0));
}
GL_CALL(DeleteFramebuffers(1, &fboid));
// Deleting the currently bound framebuffer rebinds to 0.
if (fboid == fBoundDrawFramebuffer) {
this->onFBOChanged();
}
}
bool GrGLGpu::onCopySurface(GrSurface* dst, GrSurface* src, const SkIRect& srcRect,
const SkIPoint& dstPoint) {
// Don't prefer copying as a draw if the dst doesn't already have a FBO object.
// This implicitly handles this->glCaps().useDrawInsteadOfAllRenderTargetWrites().
bool preferCopy = SkToBool(dst->asRenderTarget());
auto dstFormat = dst->backendFormat().asGLFormat();
if (preferCopy && this->glCaps().canCopyAsDraw(dstFormat, SkToBool(src->asTexture()))) {
if (this->copySurfaceAsDraw(dst, src, srcRect, dstPoint)) {
return true;
}
}
if (can_copy_texsubimage(dst, src, this->glCaps())) {
this->copySurfaceAsCopyTexSubImage(dst, src, srcRect, dstPoint);
return true;
}
if (can_blit_framebuffer_for_copy_surface(dst, src, srcRect, dstPoint, this->glCaps())) {
return this->copySurfaceAsBlitFramebuffer(dst, src, srcRect, dstPoint);
}
if (!preferCopy && this->glCaps().canCopyAsDraw(dstFormat, SkToBool(src->asTexture()))) {
if (this->copySurfaceAsDraw(dst, src, srcRect, dstPoint)) {
return true;
}
}
return false;
}
bool GrGLGpu::createCopyProgram(GrTexture* srcTex) {
TRACE_EVENT0("skia.gpu", TRACE_FUNC);
int progIdx = TextureToCopyProgramIdx(srcTex);
const GrShaderCaps* shaderCaps = this->caps()->shaderCaps();
GrSLType samplerType =
GrSLCombinedSamplerTypeForTextureType(srcTex->texturePriv().textureType());
if (!fCopyProgramArrayBuffer) {
static const GrGLfloat vdata[] = {
0, 0,
0, 1,
1, 0,
1, 1
};
fCopyProgramArrayBuffer = GrGLBuffer::Make(this, sizeof(vdata), GrGpuBufferType::kVertex,
kStatic_GrAccessPattern, vdata);
}
if (!fCopyProgramArrayBuffer) {
return false;
}
SkASSERT(!fCopyPrograms[progIdx].fProgram);
GL_CALL_RET(fCopyPrograms[progIdx].fProgram, CreateProgram());
if (!fCopyPrograms[progIdx].fProgram) {
return false;
}
GrShaderVar aVertex("a_vertex", kHalf2_GrSLType, GrShaderVar::kIn_TypeModifier);
GrShaderVar uTexCoordXform("u_texCoordXform", kHalf4_GrSLType,
GrShaderVar::kUniform_TypeModifier);
GrShaderVar uPosXform("u_posXform", kHalf4_GrSLType, GrShaderVar::kUniform_TypeModifier);
GrShaderVar uTexture("u_texture", samplerType, GrShaderVar::kUniform_TypeModifier);
GrShaderVar vTexCoord("v_texCoord", kHalf2_GrSLType, GrShaderVar::kOut_TypeModifier);
GrShaderVar oFragColor("o_FragColor", kHalf4_GrSLType, GrShaderVar::kOut_TypeModifier);
SkString vshaderTxt;
if (shaderCaps->noperspectiveInterpolationSupport()) {
if (const char* extension = shaderCaps->noperspectiveInterpolationExtensionString()) {
vshaderTxt.appendf("#extension %s : require\n", extension);
}
vTexCoord.addModifier("noperspective");
}
aVertex.appendDecl(shaderCaps, &vshaderTxt);
vshaderTxt.append(";");
uTexCoordXform.appendDecl(shaderCaps, &vshaderTxt);
vshaderTxt.append(";");
uPosXform.appendDecl(shaderCaps, &vshaderTxt);
vshaderTxt.append(";");
vTexCoord.appendDecl(shaderCaps, &vshaderTxt);
vshaderTxt.append(";");
vshaderTxt.append(
"// Copy Program VS\n"
"void main() {"
" v_texCoord = half2(a_vertex.xy * u_texCoordXform.xy + u_texCoordXform.zw);"
" sk_Position.xy = a_vertex * u_posXform.xy + u_posXform.zw;"
" sk_Position.zw = half2(0, 1);"
"}"
);
SkString fshaderTxt;
if (shaderCaps->noperspectiveInterpolationSupport()) {
if (const char* extension = shaderCaps->noperspectiveInterpolationExtensionString()) {
fshaderTxt.appendf("#extension %s : require\n", extension);
}
}
vTexCoord.setTypeModifier(GrShaderVar::kIn_TypeModifier);
vTexCoord.appendDecl(shaderCaps, &fshaderTxt);
fshaderTxt.append(";");
uTexture.appendDecl(shaderCaps, &fshaderTxt);
fshaderTxt.append(";");
fshaderTxt.appendf(
"// Copy Program FS\n"
"void main() {"
" sk_FragColor = sample(u_texture, v_texCoord);"
"}"
);
auto errorHandler = this->getContext()->priv().getShaderErrorHandler();
SkSL::String sksl(vshaderTxt.c_str(), vshaderTxt.size());
SkSL::Program::Settings settings;
settings.fCaps = shaderCaps;
SkSL::String glsl;
std::unique_ptr<SkSL::Program> program = GrSkSLtoGLSL(*fGLContext, SkSL::Program::kVertex_Kind,
sksl, settings, &glsl, errorHandler);
GrGLuint vshader = GrGLCompileAndAttachShader(*fGLContext, fCopyPrograms[progIdx].fProgram,
GR_GL_VERTEX_SHADER, glsl, &fStats, errorHandler);
SkASSERT(program->fInputs.isEmpty());
sksl.assign(fshaderTxt.c_str(), fshaderTxt.size());
program = GrSkSLtoGLSL(*fGLContext, SkSL::Program::kFragment_Kind, sksl, settings, &glsl,
errorHandler);
GrGLuint fshader = GrGLCompileAndAttachShader(*fGLContext, fCopyPrograms[progIdx].fProgram,
GR_GL_FRAGMENT_SHADER, glsl, &fStats,
errorHandler);
SkASSERT(program->fInputs.isEmpty());
GL_CALL(LinkProgram(fCopyPrograms[progIdx].fProgram));
GL_CALL_RET(fCopyPrograms[progIdx].fTextureUniform,
GetUniformLocation(fCopyPrograms[progIdx].fProgram, "u_texture"));
GL_CALL_RET(fCopyPrograms[progIdx].fPosXformUniform,
GetUniformLocation(fCopyPrograms[progIdx].fProgram, "u_posXform"));
GL_CALL_RET(fCopyPrograms[progIdx].fTexCoordXformUniform,
GetUniformLocation(fCopyPrograms[progIdx].fProgram, "u_texCoordXform"));
GL_CALL(BindAttribLocation(fCopyPrograms[progIdx].fProgram, 0, "a_vertex"));
GL_CALL(DeleteShader(vshader));
GL_CALL(DeleteShader(fshader));
return true;
}
bool GrGLGpu::createMipmapProgram(int progIdx) {
const bool oddWidth = SkToBool(progIdx & 0x2);
const bool oddHeight = SkToBool(progIdx & 0x1);
const int numTaps = (oddWidth ? 2 : 1) * (oddHeight ? 2 : 1);
const GrShaderCaps* shaderCaps = this->caps()->shaderCaps();
SkASSERT(!fMipmapPrograms[progIdx].fProgram);
GL_CALL_RET(fMipmapPrograms[progIdx].fProgram, CreateProgram());
if (!fMipmapPrograms[progIdx].fProgram) {
return false;
}
GrShaderVar aVertex("a_vertex", kHalf2_GrSLType, GrShaderVar::kIn_TypeModifier);
GrShaderVar uTexCoordXform("u_texCoordXform", kHalf4_GrSLType,
GrShaderVar::kUniform_TypeModifier);
GrShaderVar uTexture("u_texture", kTexture2DSampler_GrSLType,
GrShaderVar::kUniform_TypeModifier);
// We need 1, 2, or 4 texture coordinates (depending on parity of each dimension):
GrShaderVar vTexCoords[] = {
GrShaderVar("v_texCoord0", kHalf2_GrSLType, GrShaderVar::kOut_TypeModifier),
GrShaderVar("v_texCoord1", kHalf2_GrSLType, GrShaderVar::kOut_TypeModifier),
GrShaderVar("v_texCoord2", kHalf2_GrSLType, GrShaderVar::kOut_TypeModifier),
GrShaderVar("v_texCoord3", kHalf2_GrSLType, GrShaderVar::kOut_TypeModifier),
};
GrShaderVar oFragColor("o_FragColor", kHalf4_GrSLType,GrShaderVar::kOut_TypeModifier);
SkString vshaderTxt;
if (shaderCaps->noperspectiveInterpolationSupport()) {
if (const char* extension = shaderCaps->noperspectiveInterpolationExtensionString()) {
vshaderTxt.appendf("#extension %s : require\n", extension);
}
vTexCoords[0].addModifier("noperspective");
vTexCoords[1].addModifier("noperspective");
vTexCoords[2].addModifier("noperspective");
vTexCoords[3].addModifier("noperspective");
}
aVertex.appendDecl(shaderCaps, &vshaderTxt);
vshaderTxt.append(";");
uTexCoordXform.appendDecl(shaderCaps, &vshaderTxt);
vshaderTxt.append(";");
for (int i = 0; i < numTaps; ++i) {
vTexCoords[i].appendDecl(shaderCaps, &vshaderTxt);
vshaderTxt.append(";");
}
vshaderTxt.append(
"// Mipmap Program VS\n"
"void main() {"
" sk_Position.xy = a_vertex * half2(2, 2) - half2(1, 1);"
" sk_Position.zw = half2(0, 1);"
);
// Insert texture coordinate computation:
if (oddWidth && oddHeight) {
vshaderTxt.append(
" v_texCoord0 = a_vertex.xy * u_texCoordXform.yw;"
" v_texCoord1 = a_vertex.xy * u_texCoordXform.yw + half2(u_texCoordXform.x, 0);"
" v_texCoord2 = a_vertex.xy * u_texCoordXform.yw + half2(0, u_texCoordXform.z);"
" v_texCoord3 = a_vertex.xy * u_texCoordXform.yw + u_texCoordXform.xz;"
);
} else if (oddWidth) {
vshaderTxt.append(
" v_texCoord0 = a_vertex.xy * half2(u_texCoordXform.y, 1);"
" v_texCoord1 = a_vertex.xy * half2(u_texCoordXform.y, 1) + half2(u_texCoordXform.x, 0);"
);
} else if (oddHeight) {
vshaderTxt.append(
" v_texCoord0 = a_vertex.xy * half2(1, u_texCoordXform.w);"
" v_texCoord1 = a_vertex.xy * half2(1, u_texCoordXform.w) + half2(0, u_texCoordXform.z);"
);
} else {
vshaderTxt.append(
" v_texCoord0 = a_vertex.xy;"
);
}
vshaderTxt.append("}");
SkString fshaderTxt;
if (shaderCaps->noperspectiveInterpolationSupport()) {
if (const char* extension = shaderCaps->noperspectiveInterpolationExtensionString()) {
fshaderTxt.appendf("#extension %s : require\n", extension);
}
}
for (int i = 0; i < numTaps; ++i) {
vTexCoords[i].setTypeModifier(GrShaderVar::kIn_TypeModifier);
vTexCoords[i].appendDecl(shaderCaps, &fshaderTxt);
fshaderTxt.append(";");
}
uTexture.appendDecl(shaderCaps, &fshaderTxt);
fshaderTxt.append(";");
fshaderTxt.append(
"// Mipmap Program FS\n"
"void main() {"
);
if (oddWidth && oddHeight) {
fshaderTxt.append(
" sk_FragColor = (sample(u_texture, v_texCoord0) + "
" sample(u_texture, v_texCoord1) + "
" sample(u_texture, v_texCoord2) + "
" sample(u_texture, v_texCoord3)) * 0.25;"
);
} else if (oddWidth || oddHeight) {
fshaderTxt.append(
" sk_FragColor = (sample(u_texture, v_texCoord0) + "
" sample(u_texture, v_texCoord1)) * 0.5;"
);
} else {
fshaderTxt.append(
" sk_FragColor = sample(u_texture, v_texCoord0);"
);
}
fshaderTxt.append("}");
auto errorHandler = this->getContext()->priv().getShaderErrorHandler();
SkSL::String sksl(vshaderTxt.c_str(), vshaderTxt.size());
SkSL::Program::Settings settings;
settings.fCaps = shaderCaps;
SkSL::String glsl;
std::unique_ptr<SkSL::Program> program = GrSkSLtoGLSL(*fGLContext, SkSL::Program::kVertex_Kind,
sksl, settings, &glsl, errorHandler);
GrGLuint vshader = GrGLCompileAndAttachShader(*fGLContext, fMipmapPrograms[progIdx].fProgram,
GR_GL_VERTEX_SHADER, glsl, &fStats, errorHandler);
SkASSERT(program->fInputs.isEmpty());
sksl.assign(fshaderTxt.c_str(), fshaderTxt.size());
program = GrSkSLtoGLSL(*fGLContext, SkSL::Program::kFragment_Kind, sksl, settings, &glsl,
errorHandler);
GrGLuint fshader = GrGLCompileAndAttachShader(*fGLContext, fMipmapPrograms[progIdx].fProgram,
GR_GL_FRAGMENT_SHADER, glsl, &fStats,
errorHandler);
SkASSERT(program->fInputs.isEmpty());
GL_CALL(LinkProgram(fMipmapPrograms[progIdx].fProgram));
GL_CALL_RET(fMipmapPrograms[progIdx].fTextureUniform,
GetUniformLocation(fMipmapPrograms[progIdx].fProgram, "u_texture"));
GL_CALL_RET(fMipmapPrograms[progIdx].fTexCoordXformUniform,
GetUniformLocation(fMipmapPrograms[progIdx].fProgram, "u_texCoordXform"));
GL_CALL(BindAttribLocation(fMipmapPrograms[progIdx].fProgram, 0, "a_vertex"));
GL_CALL(DeleteShader(vshader));
GL_CALL(DeleteShader(fshader));
return true;
}
bool GrGLGpu::copySurfaceAsDraw(GrSurface* dst, GrSurface* src, const SkIRect& srcRect,
const SkIPoint& dstPoint) {
auto* srcTex = static_cast<GrGLTexture*>(src->asTexture());
auto* dstTex = static_cast<GrGLTexture*>(src->asTexture());
auto* dstRT = static_cast<GrGLRenderTarget*>(src->asRenderTarget());
if (!srcTex) {
return false;
}
int progIdx = TextureToCopyProgramIdx(srcTex);
if (!dstRT) {
SkASSERT(dstTex);
if (!this->glCaps().isFormatRenderable(dstTex->format(), 1)) {
return false;
}
}
if (!fCopyPrograms[progIdx].fProgram) {
if (!this->createCopyProgram(srcTex)) {
SkDebugf("Failed to create copy program.\n");
return false;
}
}
int w = srcRect.width();
int h = srcRect.height();
// We don't swizzle at all in our copies.
this->bindTexture(0, GrSamplerState::ClampNearest(), GrSwizzle::RGBA(), srcTex);
this->bindSurfaceFBOForPixelOps(dst, 0, GR_GL_FRAMEBUFFER, kDst_TempFBOTarget);
this->flushViewport(dst->width(), dst->height());
fHWBoundRenderTargetUniqueID.makeInvalid();
SkIRect dstRect = SkIRect::MakeXYWH(dstPoint.fX, dstPoint.fY, w, h);
this->flushProgram(fCopyPrograms[progIdx].fProgram);
fHWVertexArrayState.setVertexArrayID(this, 0);
GrGLAttribArrayState* attribs = fHWVertexArrayState.bindInternalVertexArray(this);
attribs->enableVertexArrays(this, 1);
attribs->set(this, 0, fCopyProgramArrayBuffer.get(), kFloat2_GrVertexAttribType,
kFloat2_GrSLType, 2 * sizeof(GrGLfloat), 0);
// dst rect edges in NDC (-1 to 1)
int dw = dst->width();
int dh = dst->height();
GrGLfloat dx0 = 2.f * dstPoint.fX / dw - 1.f;
GrGLfloat dx1 = 2.f * (dstPoint.fX + w) / dw - 1.f;
GrGLfloat dy0 = 2.f * dstPoint.fY / dh - 1.f;
GrGLfloat dy1 = 2.f * (dstPoint.fY + h) / dh - 1.f;
GrGLfloat sx0 = (GrGLfloat)srcRect.fLeft;
GrGLfloat sx1 = (GrGLfloat)(srcRect.fLeft + w);
GrGLfloat sy0 = (GrGLfloat)srcRect.fTop;
GrGLfloat sy1 = (GrGLfloat)(srcRect.fTop + h);
int sw = src->width();
int sh = src->height();
if (srcTex->texturePriv().textureType() != GrTextureType::kRectangle) {
// src rect edges in normalized texture space (0 to 1)
sx0 /= sw;
sx1 /= sw;
sy0 /= sh;
sy1 /= sh;
}
GL_CALL(Uniform4f(fCopyPrograms[progIdx].fPosXformUniform, dx1 - dx0, dy1 - dy0, dx0, dy0));
GL_CALL(Uniform4f(fCopyPrograms[progIdx].fTexCoordXformUniform,
sx1 - sx0, sy1 - sy0, sx0, sy0));
GL_CALL(Uniform1i(fCopyPrograms[progIdx].fTextureUniform, 0));
this->flushBlendAndColorWrite(GrXferProcessor::BlendInfo(), GrSwizzle::RGBA());
this->flushHWAAState(nullptr, false);
this->disableScissor();
this->disableWindowRectangles();
this->disableStencil();
if (this->glCaps().srgbWriteControl()) {
this->flushFramebufferSRGB(true);
}
GL_CALL(DrawArrays(GR_GL_TRIANGLE_STRIP, 0, 4));
this->unbindSurfaceFBOForPixelOps(dst, 0, GR_GL_FRAMEBUFFER);
// The rect is already in device space so we pass in kTopLeft so no flip is done.
this->didWriteToSurface(dst, kTopLeft_GrSurfaceOrigin, &dstRect);
return true;
}
void GrGLGpu::copySurfaceAsCopyTexSubImage(GrSurface* dst, GrSurface* src, const SkIRect& srcRect,
const SkIPoint& dstPoint) {
SkASSERT(can_copy_texsubimage(dst, src, this->glCaps()));
this->bindSurfaceFBOForPixelOps(src, 0, GR_GL_FRAMEBUFFER, kSrc_TempFBOTarget);
GrGLTexture* dstTex = static_cast<GrGLTexture *>(dst->asTexture());
SkASSERT(dstTex);
// We modified the bound FBO
fHWBoundRenderTargetUniqueID.makeInvalid();
this->bindTextureToScratchUnit(dstTex->target(), dstTex->textureID());
GL_CALL(CopyTexSubImage2D(dstTex->target(), 0,
dstPoint.fX, dstPoint.fY,
srcRect.fLeft, srcRect.fTop,
srcRect.width(), srcRect.height()));
this->unbindSurfaceFBOForPixelOps(src, 0, GR_GL_FRAMEBUFFER);
SkIRect dstRect = SkIRect::MakeXYWH(dstPoint.fX, dstPoint.fY,
srcRect.width(), srcRect.height());
// The rect is already in device space so we pass in kTopLeft so no flip is done.
this->didWriteToSurface(dst, kTopLeft_GrSurfaceOrigin, &dstRect);
}
bool GrGLGpu::copySurfaceAsBlitFramebuffer(GrSurface* dst, GrSurface* src, const SkIRect& srcRect,
const SkIPoint& dstPoint) {
SkASSERT(can_blit_framebuffer_for_copy_surface(dst, src, srcRect, dstPoint, this->glCaps()));
SkIRect dstRect = SkIRect::MakeXYWH(dstPoint.fX, dstPoint.fY,
srcRect.width(), srcRect.height());
if (dst == src) {
if (SkIRect::Intersects(dstRect, srcRect)) {
return false;
}
}
this->bindSurfaceFBOForPixelOps(dst, 0, GR_GL_DRAW_FRAMEBUFFER, kDst_TempFBOTarget);
this->bindSurfaceFBOForPixelOps(src, 0, GR_GL_READ_FRAMEBUFFER, kSrc_TempFBOTarget);
// We modified the bound FBO
fHWBoundRenderTargetUniqueID.makeInvalid();
// BlitFrameBuffer respects the scissor, so disable it.
this->disableScissor();
this->disableWindowRectangles();
GL_CALL(BlitFramebuffer(srcRect.fLeft,
srcRect.fTop,
srcRect.fRight,
srcRect.fBottom,
dstRect.fLeft,
dstRect.fTop,
dstRect.fRight,
dstRect.fBottom,
GR_GL_COLOR_BUFFER_BIT, GR_GL_NEAREST));
this->unbindSurfaceFBOForPixelOps(dst, 0, GR_GL_DRAW_FRAMEBUFFER);
this->unbindSurfaceFBOForPixelOps(src, 0, GR_GL_READ_FRAMEBUFFER);
// The rect is already in device space so we pass in kTopLeft so no flip is done.
this->didWriteToSurface(dst, kTopLeft_GrSurfaceOrigin, &dstRect);
return true;
}
bool GrGLGpu::onRegenerateMipMapLevels(GrTexture* texture) {
auto glTex = static_cast<GrGLTexture*>(texture);
// Mipmaps are only supported on 2D textures:
if (GR_GL_TEXTURE_2D != glTex->target()) {
return false;
}
GrGLFormat format = glTex->format();
// Manual implementation of mipmap generation, to work around driver bugs w/sRGB.
// Uses draw calls to do a series of downsample operations to successive mips.
// The manual approach requires the ability to limit which level we're sampling and that the
// destination can be bound to a FBO:
if (!this->glCaps().doManualMipmapping() || !this->glCaps().isFormatRenderable(format, 1)) {
GrGLenum target = glTex->target();
this->bindTextureToScratchUnit(target, glTex->textureID());
GL_CALL(GenerateMipmap(glTex->target()));
return true;
}
int width = texture->width();
int height = texture->height();
int levelCount = SkMipMap::ComputeLevelCount(width, height) + 1;
SkASSERT(levelCount == texture->texturePriv().maxMipMapLevel() + 1);
// Create (if necessary), then bind temporary FBO:
if (0 == fTempDstFBOID) {
GL_CALL(GenFramebuffers(1, &fTempDstFBOID));
}
this->bindFramebuffer(GR_GL_FRAMEBUFFER, fTempDstFBOID);
fHWBoundRenderTargetUniqueID.makeInvalid();
// Bind the texture, to get things configured for filtering.
// We'll be changing our base level further below:
this->setTextureUnit(0);
// The mipmap program does not do any swizzling.
this->bindTexture(0, GrSamplerState::ClampBilerp(), GrSwizzle::RGBA(), glTex);
// Vertex data:
if (!fMipmapProgramArrayBuffer) {
static const GrGLfloat vdata[] = {
0, 0,
0, 1,
1, 0,
1, 1
};
fMipmapProgramArrayBuffer = GrGLBuffer::Make(this, sizeof(vdata), GrGpuBufferType::kVertex,
kStatic_GrAccessPattern, vdata);
}
if (!fMipmapProgramArrayBuffer) {
return false;
}
fHWVertexArrayState.setVertexArrayID(this, 0);
GrGLAttribArrayState* attribs = fHWVertexArrayState.bindInternalVertexArray(this);
attribs->enableVertexArrays(this, 1);
attribs->set(this, 0, fMipmapProgramArrayBuffer.get(), kFloat2_GrVertexAttribType,
kFloat2_GrSLType, 2 * sizeof(GrGLfloat), 0);
// Set "simple" state once:
this->flushBlendAndColorWrite(GrXferProcessor::BlendInfo(), GrSwizzle::RGBA());
this->flushHWAAState(nullptr, false);
this->disableScissor();
this->disableWindowRectangles();
this->disableStencil();
// Do all the blits:
width = texture->width();
height = texture->height();
for (GrGLint level = 1; level < levelCount; ++level) {
// Get and bind the program for this particular downsample (filter shape can vary):
int progIdx = TextureSizeToMipmapProgramIdx(width, height);
if (!fMipmapPrograms[progIdx].fProgram) {
if (!this->createMipmapProgram(progIdx)) {
SkDebugf("Failed to create mipmap program.\n");
// Invalidate all params to cover base level change in a previous iteration.
glTex->textureParamsModified();
return false;
}
}
this->flushProgram(fMipmapPrograms[progIdx].fProgram);
// Texcoord uniform is expected to contain (1/w, (w-1)/w, 1/h, (h-1)/h)
const float invWidth = 1.0f / width;
const float invHeight = 1.0f / height;
GL_CALL(Uniform4f(fMipmapPrograms[progIdx].fTexCoordXformUniform,
invWidth, (width - 1) * invWidth, invHeight, (height - 1) * invHeight));
GL_CALL(Uniform1i(fMipmapPrograms[progIdx].fTextureUniform, 0));
// Only sample from previous mip
GL_CALL(TexParameteri(GR_GL_TEXTURE_2D, GR_GL_TEXTURE_BASE_LEVEL, level - 1));
GL_CALL(FramebufferTexture2D(GR_GL_FRAMEBUFFER, GR_GL_COLOR_ATTACHMENT0, GR_GL_TEXTURE_2D,
glTex->textureID(), level));
width = SkTMax(1, width / 2);
height = SkTMax(1, height / 2);
this->flushViewport(width, height);
GL_CALL(DrawArrays(GR_GL_TRIANGLE_STRIP, 0, 4));
}
// Unbind:
GL_CALL(FramebufferTexture2D(GR_GL_FRAMEBUFFER, GR_GL_COLOR_ATTACHMENT0,
GR_GL_TEXTURE_2D, 0, 0));
// We modified the base level param.
GrGLTextureParameters::NonsamplerState nonsamplerState = glTex->parameters()->nonsamplerState();
// We drew the 2nd to last level into the last level.
nonsamplerState.fBaseMipMapLevel = levelCount - 2;
glTex->parameters()->set(nullptr, nonsamplerState, fResetTimestampForTextureParameters);
return true;
}
void GrGLGpu::querySampleLocations(
GrRenderTarget* renderTarget, SkTArray<SkPoint>* sampleLocations) {
this->flushRenderTargetNoColorWrites(static_cast<GrGLRenderTarget*>(renderTarget));
int effectiveSampleCnt;
GR_GL_GetIntegerv(this->glInterface(), GR_GL_SAMPLES, &effectiveSampleCnt);
SkASSERT(effectiveSampleCnt >= renderTarget->numSamples());
sampleLocations->reset(effectiveSampleCnt);
for (int i = 0; i < effectiveSampleCnt; ++i) {
GL_CALL(GetMultisamplefv(GR_GL_SAMPLE_POSITION, i, &(*sampleLocations)[i].fX));
}
}
void GrGLGpu::xferBarrier(GrRenderTarget* rt, GrXferBarrierType type) {
SkASSERT(type);
switch (type) {
case kTexture_GrXferBarrierType: {
GrGLRenderTarget* glrt = static_cast<GrGLRenderTarget*>(rt);
SkASSERT(glrt->textureFBOID() != 0 && glrt->renderFBOID() != 0);
if (glrt->textureFBOID() != glrt->renderFBOID()) {
// The render target uses separate storage so no need for glTextureBarrier.
// FIXME: The render target will resolve automatically when its texture is bound,
// but we could resolve only the bounds that will be read if we do it here instead.
return;
}
SkASSERT(this->caps()->textureBarrierSupport());
GL_CALL(TextureBarrier());
return;
}
case kBlend_GrXferBarrierType:
SkASSERT(GrCaps::kAdvanced_BlendEquationSupport ==
this->caps()->blendEquationSupport());
GL_CALL(BlendBarrier());
return;
default: break; // placate compiler warnings that kNone not handled
}
}
static GrPixelConfig gl_format_to_pixel_config(GrGLFormat format) {
switch (format) {
case GrGLFormat::kRGBA8: return kRGBA_8888_GrPixelConfig;
case GrGLFormat::kRGB8: return kRGB_888_GrPixelConfig;
case GrGLFormat::kRG8: return kRG_88_GrPixelConfig;
case GrGLFormat::kBGRA8: return kBGRA_8888_GrPixelConfig;
case GrGLFormat::kLUMINANCE8: return kGray_8_GrPixelConfig;
case GrGLFormat::kSRGB8_ALPHA8: return kSRGBA_8888_GrPixelConfig;
case GrGLFormat::kRGB10_A2: return kRGBA_1010102_GrPixelConfig;
case GrGLFormat::kRGB565: return kRGB_565_GrPixelConfig;
case GrGLFormat::kRGBA4: return kRGBA_4444_GrPixelConfig;
case GrGLFormat::kRGBA16F: return kRGBA_half_GrPixelConfig;
case GrGLFormat::kR16: return kAlpha_16_GrPixelConfig;
case GrGLFormat::kRG16: return kRG_1616_GrPixelConfig;
case GrGLFormat::kRGBA16: return kRGBA_16161616_GrPixelConfig;
case GrGLFormat::kRG16F: return kRG_half_GrPixelConfig;
case GrGLFormat::kUnknown: return kUnknown_GrPixelConfig;
// Configs with multiple equivalent formats.
case GrGLFormat::kR16F: return kAlpha_half_GrPixelConfig;
case GrGLFormat::kLUMINANCE16F: return kAlpha_half_GrPixelConfig;
case GrGLFormat::kALPHA8: return kAlpha_8_GrPixelConfig;
case GrGLFormat::kR8: return kAlpha_8_GrPixelConfig;
case GrGLFormat::kCOMPRESSED_RGB8_ETC2: return kRGB_ETC1_GrPixelConfig;
case GrGLFormat::kCOMPRESSED_ETC1_RGB8: return kRGB_ETC1_GrPixelConfig;
}
SkUNREACHABLE;
}
GrBackendTexture GrGLGpu::onCreateBackendTexture(SkISize dimensions,
const GrBackendFormat& format,
GrRenderable renderable,
const BackendTextureData* data,
int numMipLevels,
GrProtected isProtected) {
this->handleDirtyContext();
GrGLFormat glFormat = format.asGLFormat();
if (glFormat == GrGLFormat::kUnknown) {
return GrBackendTexture(); // invalid
}
// Compressed formats go through onCreateCompressedBackendTexture
SkASSERT(!GrGLFormatIsCompressed(glFormat));
GrGLTextureInfo info;
GrGLTextureParameters::SamplerOverriddenState initialState;
GrSurfaceDesc desc;
desc.fWidth = dimensions.width();
desc.fHeight = dimensions.height();
desc.fConfig = gl_format_to_pixel_config(glFormat);
if (desc.fConfig == kUnknown_GrPixelConfig) {
return GrBackendTexture(); // invalid
}
info.fTarget = GR_GL_TEXTURE_2D;
info.fFormat = GrGLFormatToEnum(glFormat);
info.fID = this->createTexture2D(dimensions, glFormat, renderable, &initialState, numMipLevels);
if (!info.fID) {
return {};
}
if (data && data->type() == BackendTextureData::Type::kPixmaps) {
SkTDArray<GrMipLevel> texels;
GrColorType colorType = SkColorTypeToGrColorType(data->pixmap(0).colorType());
// Incorporate the color type into the config to make it "specific" if applicable.
desc.fConfig = this->caps()->getConfigFromBackendFormat(format, colorType);
SkASSERT(desc.fConfig != kUnknown_GrPixelConfig);
texels.append(numMipLevels);
for (int i = 0; i < numMipLevels; ++i) {
texels[i] = {data->pixmap(i).addr(), data->pixmap(i).rowBytes()};
}
if (!this->uploadTexData(glFormat, colorType, desc.fWidth, desc.fHeight, GR_GL_TEXTURE_2D,
0, 0, desc.fWidth, desc.fHeight, colorType, texels.begin(),
texels.count())) {
GL_CALL(DeleteTextures(1, &info.fID));
return {};
}
} else if (data && data->type() == BackendTextureData::Type::kColor) {
// TODO: Unify this with the clear texture code in onCreateTexture().
GrColorType colorType;
GrGLenum externalFormat, externalType;
this->glCaps().getTexSubImageDefaultFormatTypeAndColorType(glFormat, &externalFormat,
&externalType, &colorType);
if (colorType == GrColorType::kUnknown) {
GL_CALL(DeleteTextures(1, &info.fID));
return {};
}
// Make one tight image at the base size and reuse it for smaller levels.
GrImageInfo ii(colorType, kUnpremul_SkAlphaType, nullptr, dimensions);
auto rb = ii.minRowBytes();
std::unique_ptr<char[]> pixelStorage(new char[rb * dimensions.height()]);
if (!GrClearImage(ii, pixelStorage.get(), rb, data->color())) {
GL_CALL(DeleteTextures(1, &info.fID));
return {};
}
GL_CALL(PixelStorei(GR_GL_UNPACK_ALIGNMENT, 1));
SkISize levelDimensions = dimensions;
for (int i = 0; i < numMipLevels; ++i) {
GL_CALL(TexSubImage2D(GR_GL_TEXTURE_2D, i, 0, 0, levelDimensions.width(),
levelDimensions.height(), externalFormat, externalType,
pixelStorage.get()));
levelDimensions = {SkTMax(1, levelDimensions.width() /2),
SkTMax(1, levelDimensions.height()/2)};
}
}
// Unbind this texture from the scratch texture unit.
this->bindTextureToScratchUnit(GR_GL_TEXTURE_2D, 0);
auto parameters = sk_make_sp<GrGLTextureParameters>();
parameters->set(&initialState, GrGLTextureParameters::NonsamplerState(),
fResetTimestampForTextureParameters);
auto mipMapped = numMipLevels > 1 ? GrMipMapped::kYes : GrMipMapped::kNo;
return GrBackendTexture(dimensions.width(), dimensions.height(), mipMapped, info,
std::move(parameters));
}
void GrGLGpu::deleteBackendTexture(const GrBackendTexture& tex) {
SkASSERT(GrBackendApi::kOpenGL == tex.backend());
GrGLTextureInfo info;
if (tex.getGLTextureInfo(&info)) {
GL_CALL(DeleteTextures(1, &info.fID));
}
}
#if GR_TEST_UTILS
bool GrGLGpu::isTestingOnlyBackendTexture(const GrBackendTexture& tex) const {
SkASSERT(GrBackendApi::kOpenGL == tex.backend());
GrGLTextureInfo info;
if (!tex.getGLTextureInfo(&info)) {
return false;
}
GrGLboolean result;
GL_CALL_RET(result, IsTexture(info.fID));
return (GR_GL_TRUE == result);
}
GrBackendRenderTarget GrGLGpu::createTestingOnlyBackendRenderTarget(int w, int h,
GrColorType colorType) {
if (w > this->caps()->maxRenderTargetSize() || h > this->caps()->maxRenderTargetSize()) {
return GrBackendRenderTarget(); // invalid
}
this->handleDirtyContext();
auto format = this->glCaps().getFormatFromColorType(colorType);
if (!this->glCaps().isFormatRenderable(format, 1)) {
return {};
}
bool useTexture = format == GrGLFormat::kBGRA8;
int sFormatIdx = this->getCompatibleStencilIndex(format);
if (sFormatIdx < 0) {
return {};
}
GrGLuint colorID = 0;
GrGLuint stencilID = 0;
auto deleteIDs = [&] {
if (colorID) {
if (useTexture) {
GL_CALL(DeleteTextures(1, &colorID));
} else {
GL_CALL(DeleteRenderbuffers(1, &colorID));
}
}
if (stencilID) {
GL_CALL(DeleteRenderbuffers(1, &stencilID));
}
};
if (useTexture) {
GL_CALL(GenTextures(1, &colorID));
} else {
GL_CALL(GenRenderbuffers(1, &colorID));
}
GL_CALL(GenRenderbuffers(1, &stencilID));
if (!stencilID || !colorID) {
deleteIDs();
return {};
}
GrGLFramebufferInfo info;
info.fFBOID = 0;
info.fFormat = GrGLFormatToEnum(format);
GL_CALL(GenFramebuffers(1, &info.fFBOID));
if (!info.fFBOID) {
deleteIDs();
return {};
}
this->invalidateBoundRenderTarget();
this->bindFramebuffer(GR_GL_FRAMEBUFFER, info.fFBOID);
if (useTexture) {
GrGLTextureParameters::SamplerOverriddenState initialState;
colorID = this->createTexture2D({w, h}, format, GrRenderable::kYes, &initialState, 1);
if (!colorID) {
deleteIDs();
return {};
}
GL_CALL(FramebufferTexture2D(GR_GL_FRAMEBUFFER, GR_GL_COLOR_ATTACHMENT0, GR_GL_TEXTURE_2D,
colorID, 0));
} else {
GrGLenum renderBufferFormat = this->glCaps().getRenderbufferInternalFormat(format);
GL_CALL(BindRenderbuffer(GR_GL_RENDERBUFFER, colorID));
GL_ALLOC_CALL(this->glInterface(),
RenderbufferStorage(GR_GL_RENDERBUFFER, renderBufferFormat, w, h));
GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, GR_GL_COLOR_ATTACHMENT0,
GR_GL_RENDERBUFFER, colorID));
}
GL_CALL(BindRenderbuffer(GR_GL_RENDERBUFFER, stencilID));
auto stencilBufferFormat = this->glCaps().stencilFormats()[sFormatIdx].fInternalFormat;
GL_ALLOC_CALL(this->glInterface(),
RenderbufferStorage(GR_GL_RENDERBUFFER, stencilBufferFormat, w, h));
GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, GR_GL_STENCIL_ATTACHMENT, GR_GL_RENDERBUFFER,
stencilID));
if (this->glCaps().stencilFormats()[sFormatIdx].fPacked) {
GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER, GR_GL_DEPTH_ATTACHMENT,
GR_GL_RENDERBUFFER, stencilID));
}
// We don't want to have to recover the renderbuffer/texture IDs later to delete them. OpenGL
// has this rule that if a renderbuffer/texture is deleted and a FBO other than the current FBO
// has the RB attached then deletion is delayed. So we unbind the FBO here and delete the
// renderbuffers/texture.
this->bindFramebuffer(GR_GL_FRAMEBUFFER, 0);
deleteIDs();
this->bindFramebuffer(GR_GL_FRAMEBUFFER, info.fFBOID);
GrGLenum status;
GL_CALL_RET(status, CheckFramebufferStatus(GR_GL_FRAMEBUFFER));
if (GR_GL_FRAMEBUFFER_COMPLETE != status) {
this->deleteFramebuffer(info.fFBOID);
return {};
}
auto stencilBits = SkToInt(this->glCaps().stencilFormats()[sFormatIdx].fStencilBits);
GrBackendRenderTarget beRT = GrBackendRenderTarget(w, h, 1, stencilBits, info);
SkASSERT(this->caps()->areColorTypeAndFormatCompatible(colorType, beRT.getBackendFormat()));
return beRT;
}
void GrGLGpu::deleteTestingOnlyBackendRenderTarget(const GrBackendRenderTarget& backendRT) {
SkASSERT(GrBackendApi::kOpenGL == backendRT.backend());
GrGLFramebufferInfo info;
if (backendRT.getGLFramebufferInfo(&info)) {
if (info.fFBOID) {
this->deleteFramebuffer(info.fFBOID);
}
}
}
void GrGLGpu::testingOnly_flushGpuAndSync() {
GL_CALL(Finish());
}
#endif
///////////////////////////////////////////////////////////////////////////////
GrGLAttribArrayState* GrGLGpu::HWVertexArrayState::bindInternalVertexArray(GrGLGpu* gpu,
const GrBuffer* ibuf) {
GrGLAttribArrayState* attribState;
if (gpu->glCaps().isCoreProfile()) {
if (!fCoreProfileVertexArray) {
GrGLuint arrayID;
GR_GL_CALL(gpu->glInterface(), GenVertexArrays(1, &arrayID));
int attrCount = gpu->glCaps().maxVertexAttributes();
fCoreProfileVertexArray = new GrGLVertexArray(arrayID, attrCount);
}
if (ibuf) {
attribState = fCoreProfileVertexArray->bindWithIndexBuffer(gpu, ibuf);
} else {
attribState = fCoreProfileVertexArray->bind(gpu);
}
} else {
if (ibuf) {
// bindBuffer implicitly binds VAO 0 when binding an index buffer.
gpu->bindBuffer(GrGpuBufferType::kIndex, ibuf);
} else {
this->setVertexArrayID(gpu, 0);
}
int attrCount = gpu->glCaps().maxVertexAttributes();
if (fDefaultVertexArrayAttribState.count() != attrCount) {
fDefaultVertexArrayAttribState.resize(attrCount);
}
attribState = &fDefaultVertexArrayAttribState;
}
return attribState;
}
bool GrGLGpu::onFinishFlush(GrSurfaceProxy*[], int, SkSurface::BackendSurfaceAccess access,
const GrFlushInfo& info, const GrPrepareForExternalIORequests&) {
// If we inserted semaphores during the flush, we need to call GLFlush.
bool insertedSemaphore = info.fNumSemaphores > 0 && this->caps()->semaphoreSupport();
// We call finish if the client told us to sync or if we have a finished proc but don't support
// GLsync objects.
bool finish = (info.fFlags & kSyncCpu_GrFlushFlag) ||
(info.fFinishedProc && !this->caps()->fenceSyncSupport());
if (finish) {
GL_CALL(Finish());
// After a finish everything previously sent to GL is done.
for (const auto& cb : fFinishCallbacks) {
cb.fCallback(cb.fContext);
this->deleteSync(cb.fSync);
}
fFinishCallbacks.clear();
if (info.fFinishedProc) {
info.fFinishedProc(info.fFinishedContext);
}
} else {
if (info.fFinishedProc) {
FinishCallback callback;
callback.fCallback = info.fFinishedProc;
callback.fContext = info.fFinishedContext;
callback.fSync = (GrGLsync)this->insertFence();
fFinishCallbacks.push_back(callback);
GL_CALL(Flush());
} else if (insertedSemaphore) {
// Must call flush after semaphores in case they are waited on another GL context.
GL_CALL(Flush());
}
// See if any previously inserted finish procs are good to go.
this->checkFinishProcs();
}
return true;
}
void GrGLGpu::submit(GrOpsRenderPass* renderPass) {
// The GrGLOpsRenderPass doesn't buffer ops so there is nothing to do here
SkASSERT(fCachedOpsRenderPass.get() == renderPass);
fCachedOpsRenderPass->reset();
}
GrFence SK_WARN_UNUSED_RESULT GrGLGpu::insertFence() {
SkASSERT(this->caps()->fenceSyncSupport());
GrGLsync sync;
GL_CALL_RET(sync, FenceSync(GR_GL_SYNC_GPU_COMMANDS_COMPLETE, 0));
GR_STATIC_ASSERT(sizeof(GrFence) >= sizeof(GrGLsync));
return (GrFence)sync;
}
bool GrGLGpu::waitSync(GrGLsync sync, uint64_t timeout, bool flush) {
GrGLbitfield flags = flush ? GR_GL_SYNC_FLUSH_COMMANDS_BIT : 0;
GrGLenum result;
GL_CALL_RET(result, ClientWaitSync(sync, flags, timeout));
return (GR_GL_CONDITION_SATISFIED == result || GR_GL_ALREADY_SIGNALED == result);
}
bool GrGLGpu::waitFence(GrFence fence, uint64_t timeout) {
return this->waitSync((GrGLsync)fence, timeout, /* flush = */ true);
}
void GrGLGpu::deleteFence(GrFence fence) const {
this->deleteSync((GrGLsync)fence);
}
std::unique_ptr<GrSemaphore> SK_WARN_UNUSED_RESULT GrGLGpu::makeSemaphore(bool isOwned) {
SkASSERT(this->caps()->semaphoreSupport());
return GrGLSemaphore::Make(this, isOwned);
}
std::unique_ptr<GrSemaphore> GrGLGpu::wrapBackendSemaphore(
const GrBackendSemaphore& semaphore,
GrResourceProvider::SemaphoreWrapType wrapType,
GrWrapOwnership ownership) {
SkASSERT(this->caps()->semaphoreSupport());
return GrGLSemaphore::MakeWrapped(this, semaphore.glSync(), ownership);
}
void GrGLGpu::insertSemaphore(GrSemaphore* semaphore) {
GrGLSemaphore* glSem = static_cast<GrGLSemaphore*>(semaphore);
GrGLsync sync;
GL_CALL_RET(sync, FenceSync(GR_GL_SYNC_GPU_COMMANDS_COMPLETE, 0));
glSem->setSync(sync);
}
void GrGLGpu::waitSemaphore(GrSemaphore* semaphore) {
GrGLSemaphore* glSem = static_cast<GrGLSemaphore*>(semaphore);
GL_CALL(WaitSync(glSem->sync(), 0, GR_GL_TIMEOUT_IGNORED));
}
void GrGLGpu::checkFinishProcs() {
// Bail after the first unfinished sync since we expect they signal in the order inserted.
while (!fFinishCallbacks.empty() && this->waitSync(fFinishCallbacks.front().fSync,
/* timeout = */ 0, /* flush = */ false)) {
fFinishCallbacks.front().fCallback(fFinishCallbacks.front().fContext);
this->deleteSync(fFinishCallbacks.front().fSync);
fFinishCallbacks.pop_front();
}
}
void GrGLGpu::deleteSync(GrGLsync sync) const {
GL_CALL(DeleteSync(sync));
}
void GrGLGpu::insertEventMarker(const char* msg) {
GL_CALL(InsertEventMarker(strlen(msg), msg));
}
std::unique_ptr<GrSemaphore> GrGLGpu::prepareTextureForCrossContextUsage(GrTexture* texture) {
// Set up a semaphore to be signaled once the data is ready, and flush GL
std::unique_ptr<GrSemaphore> semaphore = this->makeSemaphore(true);
SkASSERT(semaphore);
this->insertSemaphore(semaphore.get());
// We must call flush here to make sure the GrGLSync object gets created and sent to the gpu.
GL_CALL(Flush());
return semaphore;
}
int GrGLGpu::TextureToCopyProgramIdx(GrTexture* texture) {
switch (GrSLCombinedSamplerTypeForTextureType(texture->texturePriv().textureType())) {
case kTexture2DSampler_GrSLType:
return 0;
case kTexture2DRectSampler_GrSLType:
return 1;
case kTextureExternalSampler_GrSLType:
return 2;
default:
SK_ABORT("Unexpected samper type");
}
}
#ifdef SK_ENABLE_DUMP_GPU
#include "src/utils/SkJSONWriter.h"
void GrGLGpu::onDumpJSON(SkJSONWriter* writer) const {
// We are called by the base class, which has already called beginObject(). We choose to nest
// all of our caps information in a named sub-object.
writer->beginObject("GL GPU");
const GrGLubyte* str;
GL_CALL_RET(str, GetString(GR_GL_VERSION));
writer->appendString("GL_VERSION", (const char*)(str));
GL_CALL_RET(str, GetString(GR_GL_RENDERER));
writer->appendString("GL_RENDERER", (const char*)(str));
GL_CALL_RET(str, GetString(GR_GL_VENDOR));
writer->appendString("GL_VENDOR", (const char*)(str));
GL_CALL_RET(str, GetString(GR_GL_SHADING_LANGUAGE_VERSION));
writer->appendString("GL_SHADING_LANGUAGE_VERSION", (const char*)(str));
writer->appendName("extensions");
glInterface()->fExtensions.dumpJSON(writer);
writer->endObject();
}
#endif