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skia / skia / ae17e65ef4b46ec007df4aa04dbc389ee757c9ba / . / src / gpu / gl / GrGLGpu.cpp
blob: 08bd168368e3bfce400ac6811a8eb85d94721291 [file] [log] [blame]
/*
* 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 "GrGLGpu.h"
#include "GrBackendSemaphore.h"
#include "GrBackendSurface.h"
#include "GrFixedClip.h"
#include "GrGLBuffer.h"
#include "GrGLGpuCommandBuffer.h"
#include "GrGLSemaphore.h"
#include "GrGLStencilAttachment.h"
#include "GrGLTextureRenderTarget.h"
#include "GrGpuResourcePriv.h"
#include "GrMesh.h"
#include "GrPipeline.h"
#include "GrRenderTargetPriv.h"
#include "GrShaderCaps.h"
#include "GrSurfaceProxyPriv.h"
#include "GrTexturePriv.h"
#include "GrTypes.h"
#include "SkAutoMalloc.h"
#include "SkConvertPixels.h"
#include "SkHalf.h"
#include "SkJSONWriter.h"
#include "SkMakeUnique.h"
#include "SkMipMap.h"
#include "SkPixmap.h"
#include "SkSLCompiler.h"
#include "SkStrokeRec.h"
#include "SkTemplates.h"
#include "SkTo.h"
#include "SkTraceEvent.h"
#include "SkTypes.h"
#include "builders/GrGLShaderStringBuilder.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)
#define SKIP_CACHE_CHECK true
#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
};
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,
};
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,
};
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));
}
///////////////////////////////////////////////////////////////////////////////
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)
, fHWMaxUsedBufferTextureUnit(-1)
, fHWMinSampleShading(0.0) {
SkASSERT(fGLContext);
fCaps = sk_ref_sp(fGLContext->caps());
fHWBoundTextureUniqueIDs.reset(this->caps()->shaderCaps()->maxCombinedSamplers());
fHWBufferState[kVertex_GrBufferType].fGLTarget = GR_GL_ARRAY_BUFFER;
fHWBufferState[kIndex_GrBufferType].fGLTarget = GR_GL_ELEMENT_ARRAY_BUFFER;
fHWBufferState[kTexel_GrBufferType].fGLTarget = GR_GL_TEXTURE_BUFFER;
fHWBufferState[kDrawIndirect_GrBufferType].fGLTarget = GR_GL_DRAW_INDIRECT_BUFFER;
if (GrGLCaps::kChromium_TransferBufferType == this->glCaps().transferBufferType()) {
fHWBufferState[kXferCpuToGpu_GrBufferType].fGLTarget =
GR_GL_PIXEL_UNPACK_TRANSFER_BUFFER_CHROMIUM;
fHWBufferState[kXferGpuToCpu_GrBufferType].fGLTarget =
GR_GL_PIXEL_PACK_TRANSFER_BUFFER_CHROMIUM;
} else {
fHWBufferState[kXferCpuToGpu_GrBufferType].fGLTarget = GR_GL_PIXEL_UNPACK_BUFFER;
fHWBufferState[kXferGpuToCpu_GrBufferType].fGLTarget = GR_GL_PIXEL_PACK_BUFFER;
}
for (int i = 0; i < kGrBufferTypeCount; ++i) {
fHWBufferState[i].invalidate();
}
GR_STATIC_ASSERT(6 == SK_ARRAY_COUNT(fHWBufferState));
if (this->caps()->shaderCaps()->texelBufferSupport()) {
fHWBufferTextures.reset(this->caps()->shaderCaps()->maxCombinedSamplers());
}
if (this->glCaps().shaderCaps()->pathRenderingSupport()) {
fPathRendering.reset(new GrGLPathRendering(this));
}
GrGLClearErr(this->glInterface());
}
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();
fStencilClipClearArrayBuffer.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));
}
}
if (fStencilClipClearProgram) {
GL_CALL(DeleteProgram(fStencilClipClearProgram));
}
if (fClearColorProgram.fProgram) {
GL_CALL(DeleteProgram(fClearColorProgram.fProgram));
}
delete fProgramCache;
}
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 (fStencilClipClearProgram) {
GL_CALL(DeleteProgram(fStencilClipClearProgram));
}
if (fClearColorProgram.fProgram) {
GL_CALL(DeleteProgram(fClearColorProgram.fProgram));
}
} else {
if (fProgramCache) {
fProgramCache->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;
}
fStencilClipClearProgram = 0;
fStencilClipClearArrayBuffer.reset();
fClearColorProgram.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));
fHWBufferState[kTexel_GrBufferType].invalidate();
fHWBufferState[kDrawIndirect_GrBufferType].invalidate();
fHWBufferState[kXferCpuToGpu_GrBufferType].invalidate();
fHWBufferState[kXferGpuToCpu_GrBufferType].invalidate();
if (kGL_GrGLStandard == 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 (kGLES_GrGLStandard == this->glStandard() &&
this->hasExtension("GL_ARM_shader_framebuffer_fetch")) {
// 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_ARM));
}
fHWWriteToColor = kUnknown_TriState;
// we only ever use lines in hairline mode
GL_CALL(LineWidth(1));
GL_CALL(Disable(GR_GL_DITHER));
}
if (resetBits & kMSAAEnable_GrGLBackendState) {
fMSAAEnabled = kUnknown_TriState;
if (this->caps()->usesMixedSamples()) {
if (0 != this->caps()->maxRasterSamples()) {
fHWRasterMultisampleEnabled = kUnknown_TriState;
fHWNumRasterSamples = 0;
}
// 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 < fHWBoundTextureUniqueIDs.count(); ++s) {
fHWBoundTextureUniqueIDs[s].makeInvalid();
}
for (int b = 0; b < fHWBufferTextures.count(); ++b) {
SkASSERT(this->caps()->shaderCaps()->texelBufferSupport());
fHWBufferTextures[b].fKnownBound = false;
}
}
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();
fHWBufferState[kVertex_GrBufferType].invalidate();
fHWBufferState[kIndex_GrBufferType].invalidate();
if (this->glCaps().requiresFlushBetweenNonAndInstancedDraws()) {
fRequiresFlushBeforeNextInstancedDraw = true;
}
}
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->glCaps().unpackRowLengthSupport()) {
GL_CALL(PixelStorei(GR_GL_UNPACK_ROW_LENGTH, 0));
}
if (this->glCaps().packRowLengthSupport()) {
GL_CALL(PixelStorei(GR_GL_PACK_ROW_LENGTH, 0));
}
if (this->glCaps().unpackFlipYSupport()) {
GL_CALL(PixelStorei(GR_GL_UNPACK_FLIP_Y, GR_GL_FALSE));
}
if (this->glCaps().packFlipYSupport()) {
GL_CALL(PixelStorei(GR_GL_PACK_REVERSE_ROW_ORDER, GR_GL_FALSE));
}
}
if (resetBits & kProgram_GrGLBackendState) {
fHWProgramID = 0;
fHWProgram.reset();
}
}
static bool check_backend_texture(const GrBackendTexture& backendTex, const GrGLCaps& caps,
GrGLTexture::IDDesc* idDesc) {
GrGLTextureInfo info;
if (!backendTex.getGLTextureInfo(&info) || !info.fID) {
return false;
}
idDesc->fInfo = info;
if (GR_GL_TEXTURE_EXTERNAL == idDesc->fInfo.fTarget) {
if (!caps.shaderCaps()->externalTextureSupport()) {
return false;
}
} else if (GR_GL_TEXTURE_RECTANGLE == idDesc->fInfo.fTarget) {
if (!caps.rectangleTextureSupport()) {
return false;
}
} else if (GR_GL_TEXTURE_2D != idDesc->fInfo.fTarget) {
return false;
}
return true;
}
sk_sp<GrTexture> GrGLGpu::onWrapBackendTexture(const GrBackendTexture& backendTex,
GrWrapOwnership ownership) {
GrGLTexture::IDDesc idDesc;
if (!check_backend_texture(backendTex, this->glCaps(), &idDesc)) {
return nullptr;
}
if (!idDesc.fInfo.fFormat) {
idDesc.fInfo.fFormat = this->glCaps().configSizedInternalFormat(backendTex.config());
}
if (kBorrow_GrWrapOwnership == ownership) {
idDesc.fOwnership = GrBackendObjectOwnership::kBorrowed;
} else {
idDesc.fOwnership = GrBackendObjectOwnership::kOwned;
}
GrSurfaceDesc surfDesc;
surfDesc.fFlags = kNone_GrSurfaceFlags;
surfDesc.fWidth = backendTex.width();
surfDesc.fHeight = backendTex.height();
surfDesc.fConfig = backendTex.config();
surfDesc.fSampleCnt = 1;
GrMipMapsStatus mipMapsStatus = backendTex.hasMipMaps() ? GrMipMapsStatus::kValid
: GrMipMapsStatus::kNotAllocated;
return GrGLTexture::MakeWrapped(this, surfDesc, mipMapsStatus, idDesc);
}
sk_sp<GrTexture> GrGLGpu::onWrapRenderableBackendTexture(const GrBackendTexture& backendTex,
int sampleCnt,
GrWrapOwnership ownership) {
GrGLTexture::IDDesc idDesc;
if (!check_backend_texture(backendTex, this->glCaps(), &idDesc)) {
return nullptr;
}
if (!idDesc.fInfo.fFormat) {
idDesc.fInfo.fFormat = this->glCaps().configSizedInternalFormat(backendTex.config());
}
// We don't support rendering to a EXTERNAL texture.
if (GR_GL_TEXTURE_EXTERNAL == idDesc.fInfo.fTarget) {
return nullptr;
}
if (kBorrow_GrWrapOwnership == ownership) {
idDesc.fOwnership = GrBackendObjectOwnership::kBorrowed;
} else {
idDesc.fOwnership = GrBackendObjectOwnership::kOwned;
}
GrSurfaceDesc surfDesc;
surfDesc.fFlags = kRenderTarget_GrSurfaceFlag;
surfDesc.fWidth = backendTex.width();
surfDesc.fHeight = backendTex.height();
surfDesc.fConfig = backendTex.config();
surfDesc.fSampleCnt = this->caps()->getRenderTargetSampleCount(sampleCnt, backendTex.config());
if (surfDesc.fSampleCnt < 1) {
return nullptr;
}
GrGLRenderTarget::IDDesc rtIDDesc;
if (!this->createRenderTargetObjects(surfDesc, idDesc.fInfo, &rtIDDesc)) {
return nullptr;
}
GrMipMapsStatus mipMapsStatus = backendTex.hasMipMaps() ? GrMipMapsStatus::kDirty
: GrMipMapsStatus::kNotAllocated;
sk_sp<GrGLTextureRenderTarget> texRT(
GrGLTextureRenderTarget::MakeWrapped(this, surfDesc, idDesc, rtIDDesc, mipMapsStatus));
texRT->baseLevelWasBoundToFBO();
return std::move(texRT);
}
sk_sp<GrRenderTarget> GrGLGpu::onWrapBackendRenderTarget(const GrBackendRenderTarget& backendRT) {
GrGLFramebufferInfo info;
if (!backendRT.getGLFramebufferInfo(&info)) {
return nullptr;
}
GrGLRenderTarget::IDDesc idDesc;
idDesc.fRTFBOID = info.fFBOID;
idDesc.fMSColorRenderbufferID = 0;
idDesc.fTexFBOID = GrGLRenderTarget::kUnresolvableFBOID;
idDesc.fRTFBOOwnership = GrBackendObjectOwnership::kBorrowed;
idDesc.fIsMixedSampled = false;
GrSurfaceDesc desc;
desc.fFlags = kRenderTarget_GrSurfaceFlag;
desc.fWidth = backendRT.width();
desc.fHeight = backendRT.height();
desc.fConfig = backendRT.config();
desc.fSampleCnt =
this->caps()->getRenderTargetSampleCount(backendRT.sampleCnt(), backendRT.config());
return GrGLRenderTarget::MakeWrapped(this, desc, idDesc, backendRT.stencilBits());
}
sk_sp<GrRenderTarget> GrGLGpu::onWrapBackendTextureAsRenderTarget(const GrBackendTexture& tex,
int sampleCnt) {
GrGLTextureInfo info;
if (!tex.getGLTextureInfo(&info) || !info.fID) {
return nullptr;
}
if (GR_GL_TEXTURE_RECTANGLE != info.fTarget &&
GR_GL_TEXTURE_2D != info.fTarget) {
// Only texture rectangle and texture 2d are supported. 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.
return nullptr;
}
GrSurfaceDesc surfDesc;
surfDesc.fFlags = kRenderTarget_GrSurfaceFlag;
surfDesc.fWidth = tex.width();
surfDesc.fHeight = tex.height();
surfDesc.fConfig = tex.config();
surfDesc.fSampleCnt = this->caps()->getRenderTargetSampleCount(sampleCnt, tex.config());
GrGLRenderTarget::IDDesc rtIDDesc;
if (!this->createRenderTargetObjects(surfDesc, info, &rtIDDesc)) {
return nullptr;
}
return GrGLRenderTarget::MakeWrapped(this, surfDesc, rtIDDesc, 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 srcColorType, const GrMipLevel texels[],
int mipLevelCount) {
auto glTex = static_cast<GrGLTexture*>(surface->asTexture());
if (!check_write_and_transfer_input(glTex)) {
return false;
}
this->setScratchTextureUnit();
GL_CALL(BindTexture(glTex->target(), glTex->textureID()));
// No sRGB transformation occurs in uploadTexData. We choose to make the src config match the
// srgb-ness of the surface to avoid issues in ES2 where internal/external formats must match.
// When we're on ES2 and the dst is GL_SRGB_ALPHA by making the config be kSRGB_8888 we know
// that our caps will choose GL_SRGB_ALPHA as the external format, too. On ES3 or regular GL our
// caps knows to make the external format be GL_RGBA.
auto srgbEncoded = GrPixelConfigIsSRGBEncoded(surface->config());
auto srcAsConfig = GrColorTypeToPixelConfig(srcColorType, srgbEncoded);
return this->uploadTexData(glTex->config(), glTex->width(), glTex->height(), glTex->target(),
kWrite_UploadType, left, top, width, height, srcAsConfig, texels,
mipLevelCount);
}
// For GL_[UN]PACK_ALIGNMENT. TODO: This really wants to be GrColorType.
static inline GrGLint config_alignment(GrPixelConfig config) {
switch (config) {
case kAlpha_8_GrPixelConfig:
case kAlpha_8_as_Alpha_GrPixelConfig:
case kAlpha_8_as_Red_GrPixelConfig:
case kGray_8_GrPixelConfig:
case kGray_8_as_Lum_GrPixelConfig:
case kGray_8_as_Red_GrPixelConfig:
return 1;
case kRGB_565_GrPixelConfig:
case kRGBA_4444_GrPixelConfig:
case kAlpha_half_GrPixelConfig:
case kAlpha_half_as_Red_GrPixelConfig:
case kRGBA_half_GrPixelConfig:
return 2;
case kRGBA_8888_GrPixelConfig:
case kRGB_888_GrPixelConfig: // We're really talking about GrColorType::kRGB_888x here.
case kBGRA_8888_GrPixelConfig:
case kSRGBA_8888_GrPixelConfig:
case kSBGRA_8888_GrPixelConfig:
case kRGBA_1010102_GrPixelConfig:
case kRGBA_float_GrPixelConfig:
case kRG_float_GrPixelConfig:
return 4;
case kUnknown_GrPixelConfig:
return 0;
}
SK_ABORT("Invalid pixel config");
return 0;
}
bool GrGLGpu::onTransferPixels(GrTexture* texture, int left, int top, int width, int height,
GrColorType bufferColorType, GrBuffer* transferBuffer, size_t offset,
size_t rowBytes) {
GrGLTexture* glTex = static_cast<GrGLTexture*>(texture);
GrPixelConfig texConfig = glTex->config();
SkASSERT(this->caps()->isConfigTexturable(texConfig));
if (!check_write_and_transfer_input(glTex)) {
return false;
}
static_assert(sizeof(int) == sizeof(int32_t), "");
if (width <= 0 || height <= 0) {
return false;
}
this->setScratchTextureUnit();
GL_CALL(BindTexture(glTex->target(), glTex->textureID()));
SkASSERT(!transferBuffer->isMapped());
SkASSERT(!transferBuffer->isCPUBacked());
const GrGLBuffer* glBuffer = static_cast<const GrGLBuffer*>(transferBuffer);
this->bindBuffer(kXferCpuToGpu_GrBufferType, glBuffer);
SkDEBUGCODE(
SkIRect subRect = SkIRect::MakeXYWH(left, top, width, height);
SkIRect bounds = SkIRect::MakeWH(texture->width(), texture->height());
SkASSERT(bounds.contains(subRect));
)
int bpp = GrColorTypeBytesPerPixel(bufferColorType);
const size_t trimRowBytes = width * bpp;
if (!rowBytes) {
rowBytes = trimRowBytes;
}
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().unpackRowLengthSupport());
GL_CALL(PixelStorei(GR_GL_UNPACK_ROW_LENGTH, rowBytes / bpp));
restoreGLRowLength = true;
}
// Internal format comes from the texture desc.
GrGLenum internalFormat;
// External format and type come from the upload data.
GrGLenum externalFormat;
GrGLenum externalType;
auto bufferAsConfig = GrColorTypeToPixelConfig(bufferColorType, GrSRGBEncoded::kNo);
if (!this->glCaps().getTexImageFormats(texConfig, bufferAsConfig, &internalFormat,
&externalFormat, &externalType)) {
return false;
}
GL_CALL(PixelStorei(GR_GL_UNPACK_ALIGNMENT, config_alignment(texConfig)));
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;
}
/**
* Creates storage space for the texture and fills it with texels.
*
* @param config Pixel config of the texture.
* @param interface The GL interface in use.
* @param caps The capabilities of the GL device.
* @param internalFormat The data format used for the internal storage of the texture. May be sized.
* @param internalFormatForTexStorage The data format used for the TexStorage API. Must be sized.
* @param externalFormat The data format used for the external storage of the texture.
* @param externalType The type of the data used for the external storage of the texture.
* @param texels The texel data of the texture being created.
* @param baseWidth The width of the texture's base mipmap level
* @param baseHeight The height of the texture's base mipmap level
*/
static bool allocate_and_populate_texture(GrPixelConfig config,
const GrGLInterface& interface,
const GrGLCaps& caps,
GrGLenum target,
GrGLenum internalFormat,
GrGLenum internalFormatForTexStorage,
GrGLenum externalFormat,
GrGLenum externalType,
const GrMipLevel texels[], int mipLevelCount,
int baseWidth, int baseHeight) {
CLEAR_ERROR_BEFORE_ALLOC(&interface);
bool useTexStorage = caps.isConfigTexSupportEnabled(config);
// We can only use TexStorage if we know we will not later change the storage requirements.
// This means if we may later want to add mipmaps, we cannot use TexStorage.
// Right now, we cannot know if we will later add mipmaps or not.
// The only time we can use TexStorage is when we already have the
// mipmaps.
useTexStorage &= mipLevelCount > 1;
if (useTexStorage) {
// We never resize or change formats of textures.
GL_ALLOC_CALL(&interface,
TexStorage2D(target, SkTMax(mipLevelCount, 1), internalFormatForTexStorage,
baseWidth, baseHeight));
GrGLenum error = CHECK_ALLOC_ERROR(&interface);
if (error != GR_GL_NO_ERROR) {
return false;
} else {
for (int currentMipLevel = 0; currentMipLevel < mipLevelCount; currentMipLevel++) {
const void* currentMipData = texels[currentMipLevel].fPixels;
if (currentMipData == nullptr) {
continue;
}
int twoToTheMipLevel = 1 << currentMipLevel;
int currentWidth = SkTMax(1, baseWidth / twoToTheMipLevel);
int currentHeight = SkTMax(1, baseHeight / twoToTheMipLevel);
GR_GL_CALL(&interface,
TexSubImage2D(target,
currentMipLevel,
0, // left
0, // top
currentWidth,
currentHeight,
externalFormat, externalType,
currentMipData));
}
return true;
}
} else {
if (!mipLevelCount) {
GL_ALLOC_CALL(&interface,
TexImage2D(target,
0,
internalFormat,
baseWidth,
baseHeight,
0, // border
externalFormat, externalType,
nullptr));
GrGLenum error = CHECK_ALLOC_ERROR(&interface);
if (error != GR_GL_NO_ERROR) {
return false;
}
} else {
for (int currentMipLevel = 0; currentMipLevel < mipLevelCount; currentMipLevel++) {
int twoToTheMipLevel = 1 << currentMipLevel;
int currentWidth = SkTMax(1, baseWidth / twoToTheMipLevel);
int currentHeight = SkTMax(1, baseHeight / twoToTheMipLevel);
const void* currentMipData = texels[currentMipLevel].fPixels;
// Even if curremtMipData is nullptr, continue to call TexImage2D.
// This will allocate texture memory which we can later populate.
GL_ALLOC_CALL(&interface,
TexImage2D(target,
currentMipLevel,
internalFormat,
currentWidth,
currentHeight,
0, // border
externalFormat, externalType,
currentMipData));
GrGLenum error = CHECK_ALLOC_ERROR(&interface);
if (error != GR_GL_NO_ERROR) {
return false;
}
}
}
}
return true;
}
/**
* After a texture is created, any state which was altered during its creation
* needs to be restored.
*
* @param interface The GL interface to use.
* @param caps The capabilities of the GL device.
* @param restoreGLRowLength Should the row length unpacking be restored?
* @param glFlipY Did GL flip the texture vertically?
*/
static void restore_pixelstore_state(const GrGLInterface& interface, const GrGLCaps& caps,
bool restoreGLRowLength) {
if (restoreGLRowLength) {
SkASSERT(caps.unpackRowLengthSupport());
GR_GL_CALL(&interface, PixelStorei(GR_GL_UNPACK_ROW_LENGTH, 0));
}
}
void GrGLGpu::unbindCpuToGpuXferBuffer() {
auto& xferBufferState = fHWBufferState[kXferCpuToGpu_GrBufferType];
if (!xferBufferState.fBoundBufferUniqueID.isInvalid()) {
GL_CALL(BindBuffer(xferBufferState.fGLTarget, 0));
xferBufferState.invalidate();
}
}
// TODO: Make this take a GrColorType instead of dataConfig. This requires updating GrGLCaps to
// convert from GrColorType to externalFormat/externalType GLenum values.
bool GrGLGpu::uploadTexData(GrPixelConfig texConfig, int texWidth, int texHeight, GrGLenum target,
UploadType uploadType, int left, int top, int width, int height,
GrPixelConfig dataConfig, const GrMipLevel texels[], int mipLevelCount,
GrMipMapsStatus* mipMapsStatus) {
SkASSERT(this->caps()->isConfigTexturable(texConfig));
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();
// texels is const.
// But we may need to flip the texture vertically to prepare it.
// Rather than flip in place and alter the incoming data,
// we allocate a new buffer to flip into.
// This means we need to make a non-const shallow copy of texels.
SkAutoTMalloc<GrMipLevel> texelsShallowCopy;
if (mipLevelCount) {
texelsShallowCopy.reset(mipLevelCount);
memcpy(texelsShallowCopy.get(), texels, mipLevelCount*sizeof(GrMipLevel));
}
const GrGLInterface* interface = this->glInterface();
const GrGLCaps& caps = this->glCaps();
size_t bpp = GrBytesPerPixel(dataConfig);
if (width == 0 || height == 0) {
return false;
}
// Internal format comes from the texture desc.
GrGLenum internalFormat;
// External format and type come from the upload data.
GrGLenum externalFormat;
GrGLenum externalType;
if (!this->glCaps().getTexImageFormats(texConfig, dataConfig, &internalFormat, &externalFormat,
&externalType)) {
return false;
}
// TexStorage requires a sized format, and internalFormat may or may not be
GrGLenum internalFormatForTexStorage = this->glCaps().configSizedInternalFormat(texConfig);
/*
* 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;
// in case we need a temporary, trimmed copy of the src pixels
SkAutoSMalloc<128 * 128> tempStorage;
if (mipMapsStatus) {
*mipMapsStatus = GrMipMapsStatus::kValid;
}
const bool usesMips = mipLevelCount > 1;
// find the combined size of all the mip levels and the relative offset of
// each into the collective buffer
bool willNeedData = false;
size_t combinedBufferSize = 0;
SkTArray<size_t> individualMipOffsets(mipLevelCount);
for (int currentMipLevel = 0; currentMipLevel < mipLevelCount; currentMipLevel++) {
if (texelsShallowCopy[currentMipLevel].fPixels) {
int twoToTheMipLevel = 1 << currentMipLevel;
int currentWidth = SkTMax(1, width / twoToTheMipLevel);
int currentHeight = SkTMax(1, height / twoToTheMipLevel);
const size_t trimRowBytes = currentWidth * bpp;
const size_t trimmedSize = trimRowBytes * currentHeight;
const size_t rowBytes = texelsShallowCopy[currentMipLevel].fRowBytes
? texelsShallowCopy[currentMipLevel].fRowBytes
: trimRowBytes;
if (((!caps.unpackRowLengthSupport() || usesMips) && trimRowBytes != rowBytes)) {
willNeedData = true;
}
individualMipOffsets.push_back(combinedBufferSize);
combinedBufferSize += trimmedSize;
} else {
if (mipMapsStatus) {
*mipMapsStatus = GrMipMapsStatus::kDirty;
}
individualMipOffsets.push_back(0);
}
}
if (mipMapsStatus && mipLevelCount <= 1) {
*mipMapsStatus = GrMipMapsStatus::kNotAllocated;
}
char* buffer = nullptr;
if (willNeedData) {
buffer = (char*)tempStorage.reset(combinedBufferSize);
}
for (int currentMipLevel = 0; currentMipLevel < mipLevelCount; currentMipLevel++) {
if (!texelsShallowCopy[currentMipLevel].fPixels) {
continue;
}
int twoToTheMipLevel = 1 << currentMipLevel;
int currentWidth = SkTMax(1, width / twoToTheMipLevel);
int currentHeight = SkTMax(1, height / twoToTheMipLevel);
const size_t trimRowBytes = currentWidth * bpp;
/*
* 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.
*/
restoreGLRowLength = false;
const size_t rowBytes = texelsShallowCopy[currentMipLevel].fRowBytes
? texelsShallowCopy[currentMipLevel].fRowBytes
: trimRowBytes;
// TODO: This optimization should be enabled with or without mips.
// For use with mips, we must set GR_GL_UNPACK_ROW_LENGTH once per
// mip level, before calling glTexImage2D.
if (caps.unpackRowLengthSupport() && !usesMips) {
// can't use this for flipping, only non-neg values allowed. :(
if (rowBytes != trimRowBytes) {
GrGLint rowLength = static_cast<GrGLint>(rowBytes / bpp);
GR_GL_CALL(interface, PixelStorei(GR_GL_UNPACK_ROW_LENGTH, rowLength));
restoreGLRowLength = true;
}
} else if (trimRowBytes != rowBytes) {
// copy data into our new storage, skipping the trailing bytes
const char* src = (const char*)texelsShallowCopy[currentMipLevel].fPixels;
char* dst = buffer + individualMipOffsets[currentMipLevel];
SkRectMemcpy(dst, trimRowBytes, src, rowBytes, trimRowBytes, currentHeight);
// now point data to our copied version
texelsShallowCopy[currentMipLevel].fPixels = buffer +
individualMipOffsets[currentMipLevel];
texelsShallowCopy[currentMipLevel].fRowBytes = trimRowBytes;
}
}
if (mipLevelCount) {
GR_GL_CALL(interface, PixelStorei(GR_GL_UNPACK_ALIGNMENT, config_alignment(texConfig)));
}
bool succeeded = true;
if (kNewTexture_UploadType == uploadType) {
if (0 == left && 0 == top && texWidth == width && texHeight == height) {
succeeded = allocate_and_populate_texture(
texConfig, *interface, caps, target, internalFormat,
internalFormatForTexStorage, externalFormat, externalType,
texelsShallowCopy, mipLevelCount, width, height);
} else {
succeeded = false;
}
} else {
for (int currentMipLevel = 0; currentMipLevel < mipLevelCount; currentMipLevel++) {
if (!texelsShallowCopy[currentMipLevel].fPixels) {
continue;
}
int twoToTheMipLevel = 1 << currentMipLevel;
int currentWidth = SkTMax(1, width / twoToTheMipLevel);
int currentHeight = SkTMax(1, height / twoToTheMipLevel);
GL_CALL(TexSubImage2D(target,
currentMipLevel,
left, top,
currentWidth,
currentHeight,
externalFormat, externalType,
texelsShallowCopy[currentMipLevel].fPixels));
}
}
restore_pixelstore_state(*interface, caps, restoreGLRowLength);
return succeeded;
}
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:
case GrGLCaps::kMixedSamples_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 GrSurfaceDesc& desc,
const GrGLTextureInfo& texInfo,
GrGLRenderTarget::IDDesc* idDesc) {
idDesc->fMSColorRenderbufferID = 0;
idDesc->fRTFBOID = 0;
idDesc->fRTFBOOwnership = GrBackendObjectOwnership::kOwned;
idDesc->fTexFBOID = 0;
SkASSERT((GrGLCaps::kMixedSamples_MSFBOType == this->glCaps().msFBOType()) ==
this->caps()->usesMixedSamples());
idDesc->fIsMixedSampled = desc.fSampleCnt > 1 && this->caps()->usesMixedSamples();
GrGLenum status;
GrGLenum colorRenderbufferFormat = 0; // suppress warning
if (desc.fSampleCnt > 1 && GrGLCaps::kNone_MSFBOType == this->glCaps().msFBOType()) {
goto FAILED;
}
GL_CALL(GenFramebuffers(1, &idDesc->fTexFBOID));
if (!idDesc->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 (desc.fSampleCnt > 1 && this->glCaps().usesMSAARenderBuffers()) {
GL_CALL(GenFramebuffers(1, &idDesc->fRTFBOID));
GL_CALL(GenRenderbuffers(1, &idDesc->fMSColorRenderbufferID));
if (!idDesc->fRTFBOID ||
!idDesc->fMSColorRenderbufferID) {
goto FAILED;
}
if (!this->glCaps().getRenderbufferFormat(desc.fConfig, &colorRenderbufferFormat)) {
return false;
}
} else {
idDesc->fRTFBOID = idDesc->fTexFBOID;
}
// below here we may bind the FBO
fHWBoundRenderTargetUniqueID.makeInvalid();
if (idDesc->fRTFBOID != idDesc->fTexFBOID) {
SkASSERT(desc.fSampleCnt > 1);
GL_CALL(BindRenderbuffer(GR_GL_RENDERBUFFER, idDesc->fMSColorRenderbufferID));
if (!renderbuffer_storage_msaa(*fGLContext,
desc.fSampleCnt,
colorRenderbufferFormat,
desc.fWidth, desc.fHeight)) {
goto FAILED;
}
this->bindFramebuffer(GR_GL_FRAMEBUFFER, idDesc->fRTFBOID);
GL_CALL(FramebufferRenderbuffer(GR_GL_FRAMEBUFFER,
GR_GL_COLOR_ATTACHMENT0,
GR_GL_RENDERBUFFER,
idDesc->fMSColorRenderbufferID));
if (!this->glCaps().isConfigVerifiedColorAttachment(desc.fConfig)) {
GL_CALL_RET(status, CheckFramebufferStatus(GR_GL_FRAMEBUFFER));
if (status != GR_GL_FRAMEBUFFER_COMPLETE) {
goto FAILED;
}
fGLContext->caps()->markConfigAsValidColorAttachment(desc.fConfig);
}
}
this->bindFramebuffer(GR_GL_FRAMEBUFFER, idDesc->fTexFBOID);
if (this->glCaps().usesImplicitMSAAResolve() && desc.fSampleCnt > 1) {
GL_CALL(FramebufferTexture2DMultisample(GR_GL_FRAMEBUFFER,
GR_GL_COLOR_ATTACHMENT0,
texInfo.fTarget,
texInfo.fID, 0, desc.fSampleCnt));
} else {
GL_CALL(FramebufferTexture2D(GR_GL_FRAMEBUFFER,
GR_GL_COLOR_ATTACHMENT0,
texInfo.fTarget,
texInfo.fID, 0));
}
if (!this->glCaps().isConfigVerifiedColorAttachment(desc.fConfig)) {
GL_CALL_RET(status, CheckFramebufferStatus(GR_GL_FRAMEBUFFER));
if (status != GR_GL_FRAMEBUFFER_COMPLETE) {
goto FAILED;
}
fGLContext->caps()->markConfigAsValidColorAttachment(desc.fConfig);
}
return true;
FAILED:
if (idDesc->fMSColorRenderbufferID) {
GL_CALL(DeleteRenderbuffers(1, &idDesc->fMSColorRenderbufferID));
}
if (idDesc->fRTFBOID != idDesc->fTexFBOID) {
this->deleteFramebuffer(idDesc->fRTFBOID);
}
if (idDesc->fTexFBOID) {
this->deleteFramebuffer(idDesc->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;
}
#if 0 && defined(SK_DEBUG)
static size_t as_size_t(int x) {
return x;
}
#endif
static void set_initial_texture_params(const GrGLInterface* interface,
const GrGLTextureInfo& info,
GrGLTexture::TexParams* initialTexParams) {
// 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).
// we only set a subset here so invalidate first
initialTexParams->invalidate();
initialTexParams->fMinFilter = GR_GL_NEAREST;
initialTexParams->fMagFilter = GR_GL_NEAREST;
initialTexParams->fWrapS = GR_GL_CLAMP_TO_EDGE;
initialTexParams->fWrapT = GR_GL_CLAMP_TO_EDGE;
GR_GL_CALL(interface, TexParameteri(info.fTarget,
GR_GL_TEXTURE_MAG_FILTER,
initialTexParams->fMagFilter));
GR_GL_CALL(interface, TexParameteri(info.fTarget,
GR_GL_TEXTURE_MIN_FILTER,
initialTexParams->fMinFilter));
GR_GL_CALL(interface, TexParameteri(info.fTarget,
GR_GL_TEXTURE_WRAP_S,
initialTexParams->fWrapS));
GR_GL_CALL(interface, TexParameteri(info.fTarget,
GR_GL_TEXTURE_WRAP_T,
initialTexParams->fWrapT));
}
sk_sp<GrTexture> GrGLGpu::onCreateTexture(const GrSurfaceDesc& desc,
SkBudgeted budgeted,
const GrMipLevel texels[],
int mipLevelCount) {
// We fail if the MSAA was requested and is not available.
if (GrGLCaps::kNone_MSFBOType == this->glCaps().msFBOType() && desc.fSampleCnt > 1) {
//SkDebugf("MSAA RT requested but not supported on this platform.");
return return_null_texture();
}
bool performClear = (desc.fFlags & kPerformInitialClear_GrSurfaceFlag);
GrMipLevel zeroLevel;
std::unique_ptr<uint8_t[]> zeros;
if (performClear && !this->glCaps().clearTextureSupport() &&
!this->glCaps().canConfigBeFBOColorAttachment(desc.fConfig)) {
size_t rowSize = GrBytesPerPixel(desc.fConfig) * desc.fWidth;
size_t size = rowSize * desc.fHeight;
zeros.reset(new uint8_t[size]);
memset(zeros.get(), 0, size);
zeroLevel.fPixels = zeros.get();
zeroLevel.fRowBytes = 0;
texels = &zeroLevel;
mipLevelCount = 1;
performClear = false;
}
bool isRenderTarget = SkToBool(desc.fFlags & kRenderTarget_GrSurfaceFlag);
GrGLTexture::IDDesc idDesc;
idDesc.fOwnership = GrBackendObjectOwnership::kOwned;
GrMipMapsStatus mipMapsStatus;
GrGLTexture::TexParams initialTexParams;
if (!this->createTextureImpl(desc, &idDesc.fInfo, isRenderTarget, &initialTexParams, texels,
mipLevelCount, &mipMapsStatus)) {
return return_null_texture();
}
sk_sp<GrGLTexture> tex;
if (isRenderTarget) {
// unbind the texture from the texture unit before binding it to the frame buffer
GL_CALL(BindTexture(idDesc.fInfo.fTarget, 0));
GrGLRenderTarget::IDDesc rtIDDesc;
if (!this->createRenderTargetObjects(desc, idDesc.fInfo, &rtIDDesc)) {
GL_CALL(DeleteTextures(1, &idDesc.fInfo.fID));
return return_null_texture();
}
tex = sk_make_sp<GrGLTextureRenderTarget>(this, budgeted, desc, idDesc, rtIDDesc,
mipMapsStatus);
tex->baseLevelWasBoundToFBO();
} else {
tex = sk_make_sp<GrGLTexture>(this, budgeted, desc, idDesc, mipMapsStatus);
}
tex->setCachedTexParams(initialTexParams, this->getResetTimestamp());
#ifdef TRACE_TEXTURE_CREATION
SkDebugf("--- new texture [%d] size=(%d %d) config=%d\n",
idDesc.fInfo.fID, desc.fWidth, desc.fHeight, desc.fConfig);
#endif
if (tex && performClear) {
if (this->glCaps().clearTextureSupport()) {
static constexpr uint32_t kZero = 0;
GL_CALL(ClearTexImage(tex->textureID(), 0, GR_GL_RGBA, GR_GL_UNSIGNED_BYTE, &kZero));
} else {
GrGLIRect viewport;
this->bindSurfaceFBOForPixelOps(tex.get(), GR_GL_FRAMEBUFFER, &viewport,
kDst_TempFBOTarget);
this->disableScissor();
this->disableWindowRectangles();
GL_CALL(ColorMask(GR_GL_TRUE, GR_GL_TRUE, GR_GL_TRUE, GR_GL_TRUE));
fHWWriteToColor = kYes_TriState;
GL_CALL(ClearColor(0, 0, 0, 0));
GL_CALL(Clear(GR_GL_COLOR_BUFFER_BIT));
this->unbindTextureFBOForPixelOps(GR_GL_FRAMEBUFFER, tex.get());
fHWBoundRenderTargetUniqueID.makeInvalid();
}
}
return std::move(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(GrPixelConfig config) {
static const int kSize = 16;
SkASSERT(this->caps()->isConfigRenderable(config));
if (!this->glCaps().hasStencilFormatBeenDeterminedForConfig(config)) {
// Default to unsupported, set this if we find a stencil format that works.
int firstWorkingStencilFormatIndex = -1;
// Create color texture
GrGLuint colorID = 0;
GL_CALL(GenTextures(1, &colorID));
this->setScratchTextureUnit();
GL_CALL(BindTexture(GR_GL_TEXTURE_2D, colorID));
GL_CALL(TexParameteri(GR_GL_TEXTURE_2D,
GR_GL_TEXTURE_MAG_FILTER,
GR_GL_NEAREST));
GL_CALL(TexParameteri(GR_GL_TEXTURE_2D,
GR_GL_TEXTURE_MIN_FILTER,
GR_GL_NEAREST));
GL_CALL(TexParameteri(GR_GL_TEXTURE_2D,
GR_GL_TEXTURE_WRAP_S,
GR_GL_CLAMP_TO_EDGE));
GL_CALL(TexParameteri(GR_GL_TEXTURE_2D,
GR_GL_TEXTURE_WRAP_T,
GR_GL_CLAMP_TO_EDGE));
GrGLenum internalFormat;
GrGLenum externalFormat;
GrGLenum externalType;
if (!this->glCaps().getTexImageFormats(config, config, &internalFormat, &externalFormat,
&externalType)) {
return false;
}
this->unbindCpuToGpuXferBuffer();
CLEAR_ERROR_BEFORE_ALLOC(this->glInterface());
GL_ALLOC_CALL(this->glInterface(), TexImage2D(GR_GL_TEXTURE_2D,
0,
internalFormat,
kSize,
kSize,
0,
externalFormat,
externalType,
nullptr));
if (GR_GL_NO_ERROR != CHECK_ALLOC_ERROR(this->glInterface())) {
GL_CALL(DeleteTextures(1, &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()->setStencilFormatIndexForConfig(config, firstWorkingStencilFormatIndex);
}
return this->glCaps().getStencilFormatIndexForConfig(config);
}
bool GrGLGpu::createTextureImpl(const GrSurfaceDesc& desc, GrGLTextureInfo* info, bool renderTarget,
GrGLTexture::TexParams* initialTexParams, const GrMipLevel texels[],
int mipLevelCount, GrMipMapsStatus* mipMapsStatus) {
info->fID = 0;
info->fTarget = GR_GL_TEXTURE_2D;
GL_CALL(GenTextures(1, &(info->fID)));
if (!info->fID) {
return false;
}
this->setScratchTextureUnit();
GL_CALL(BindTexture(info->fTarget, info->fID));
if (renderTarget && this->glCaps().textureUsageSupport()) {
// provides a hint about how this texture will be used
GL_CALL(TexParameteri(info->fTarget,
GR_GL_TEXTURE_USAGE,
GR_GL_FRAMEBUFFER_ATTACHMENT));
}
if (info) {
set_initial_texture_params(this->glInterface(), *info, initialTexParams);
}
if (!this->uploadTexData(desc.fConfig, desc.fWidth, desc.fHeight, info->fTarget,
kNewTexture_UploadType, 0, 0, desc.fWidth, desc.fHeight, desc.fConfig,
texels, mipLevelCount, mipMapsStatus)) {
GL_CALL(DeleteTextures(1, &(info->fID)));
return false;
}
info->fFormat = this->glCaps().configSizedInternalFormat(desc.fConfig);
return true;
}
GrStencilAttachment* GrGLGpu::createStencilAttachmentForRenderTarget(const GrRenderTarget* rt,
int width, int height) {
SkASSERT(width >= rt->width());
SkASSERT(height >= rt->height());
int samples = rt->numStencilSamples();
GrGLStencilAttachment::IDDesc sbDesc;
int sIdx = this->getCompatibleStencilIndex(rt->config());
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 (samples > 1) {
SkAssertResult(renderbuffer_storage_msaa(*fGLContext,
samples,
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,
samples,
format);
return stencil;
}
////////////////////////////////////////////////////////////////////////////////
// GL_STREAM_DRAW triggers an optimization in Chromium's GPU process where a client's vertex buffer
// objects are implemented as client-side-arrays on tile-deferred architectures.
#define DYNAMIC_USAGE_PARAM GR_GL_STREAM_DRAW
GrBuffer* GrGLGpu::onCreateBuffer(size_t size, GrBufferType intendedType,
GrAccessPattern accessPattern, const void* data) {
return GrGLBuffer::Create(this, size, intendedType, accessPattern, data);
}
void GrGLGpu::flushScissor(const GrScissorState& scissorState,
const GrGLIRect& rtViewport,
GrSurfaceOrigin rtOrigin) {
if (scissorState.enabled()) {
GrGLIRect scissor;
scissor.setRelativeTo(rtViewport, scissorState.rect(), rtOrigin);
// if the scissor fully contains the viewport then we fall through and
// disable the scissor test.
if (!scissor.contains(rtViewport)) {
if (fHWScissorSettings.fRect != scissor) {
scissor.pushToGLScissor(this->glInterface());
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->getViewport(), 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);
GrGLIRect glwindows[GrWindowRectangles::kMaxWindows];
const SkIRect* skwindows = windowState.windows().data();
for (int i = 0; i < numWindows; ++i) {
glwindows[i].setRelativeTo(rt->getViewport(), skwindows[i], origin);
}
GrGLenum glmode = (Mode::kExclusive == windowState.mode()) ? GR_GL_EXCLUSIVE : GR_GL_INCLUSIVE;
GL_CALL(WindowRectangles(glmode, numWindows, glwindows->asInts()));
fHWWindowRectsState.set(origin, rt->getViewport(), 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
}
void GrGLGpu::flushMinSampleShading(float minSampleShading) {
if (fHWMinSampleShading != minSampleShading) {
if (minSampleShading > 0.0) {
GL_CALL(Enable(GR_GL_SAMPLE_SHADING));
GL_CALL(MinSampleShading(minSampleShading));
}
else {
GL_CALL(Disable(GR_GL_SAMPLE_SHADING));
}
fHWMinSampleShading = minSampleShading;
}
}
bool GrGLGpu::flushGLState(const GrPipeline& pipeline, const GrPrimitiveProcessor& primProc,
bool willDrawPoints) {
sk_sp<GrGLProgram> program(fProgramCache->refProgram(this, pipeline, primProc, willDrawPoints));
if (!program) {
GrCapsDebugf(this->caps(), "Failed to create program!\n");
return false;
}
program->generateMipmaps(primProc, pipeline);
GrXferProcessor::BlendInfo blendInfo;
pipeline.getXferProcessor().getBlendInfo(&blendInfo);
this->flushColorWrite(blendInfo.fWriteColor);
this->flushMinSampleShading(primProc.getSampleShading());
this->flushProgram(std::move(program));
if (blendInfo.fWriteColor) {
// Swizzle the blend to match what the shader will output.
const GrSwizzle& swizzle = this->caps()->shaderCaps()->configOutputSwizzle(
pipeline.proxy()->config());
this->flushBlend(blendInfo, swizzle);
}
fHWProgram->setData(primProc, pipeline);
GrGLRenderTarget* glRT = static_cast<GrGLRenderTarget*>(pipeline.renderTarget());
GrStencilSettings stencil;
if (pipeline.isStencilEnabled()) {
// TODO: attach stencil and create settings during render target flush.
SkASSERT(glRT->renderTargetPriv().getStencilAttachment());
stencil.reset(*pipeline.getUserStencil(), pipeline.hasStencilClip(),
glRT->renderTargetPriv().numStencilBits());
}
this->flushStencil(stencil);
this->flushScissor(pipeline.getScissorState(), glRT->getViewport(), pipeline.proxy()->origin());
this->flushWindowRectangles(pipeline.getWindowRectsState(), glRT, pipeline.proxy()->origin());
this->flushHWAAState(glRT, pipeline.isHWAntialiasState(), !stencil.isDisabled());
// 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, pipeline.getDisableOutputConversionToSRGB());
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 && !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 && !vertexBuffer->isMapped());
size_t bufferOffset = vertexBuffer->baseOffset() + baseVertex * 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.fType, vertexStride,
bufferOffset + attrib.fOffset, kDivisor);
}
}
if (int instanceStride = fHWProgram->instanceStride()) {
SkASSERT(instanceBuffer && !instanceBuffer->isMapped());
size_t bufferOffset = instanceBuffer->baseOffset() + baseInstance * 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.fType, instanceStride,
bufferOffset + attrib.fOffset, kDivisor);
}
}
}
GrGLenum GrGLGpu::bindBuffer(GrBufferType type, const GrBuffer* buffer) {
this->handleDirtyContext();
// Index buffer state is tied to the vertex array.
if (kIndex_GrBufferType == type) {
this->bindVertexArray(0);
}
SkASSERT(type >= 0 && type <= kLast_GrBufferType);
auto& bufferState = fHWBufferState[type];
if (buffer->uniqueID() != bufferState.fBoundBufferUniqueID) {
if (buffer->isCPUBacked()) {
if (!bufferState.fBufferZeroKnownBound) {
GL_CALL(BindBuffer(bufferState.fGLTarget, 0));
}
} else {
const GrGLBuffer* glBuffer = static_cast<const GrGLBuffer*>(buffer);
GL_CALL(BindBuffer(bufferState.fGLTarget, glBuffer->bufferID()));
}
bufferState.fBufferZeroKnownBound = buffer->isCPUBacked();
bufferState.fBoundBufferUniqueID = buffer->uniqueID();
}
return bufferState.fGLTarget;
}
void GrGLGpu::notifyBufferReleased(const GrGLBuffer* buffer) {
if (buffer->hasAttachedToTexture()) {
// Detach this buffer from any textures to ensure the underlying memory is freed.
GrGpuResource::UniqueID uniqueID = buffer->uniqueID();
for (int i = fHWMaxUsedBufferTextureUnit; i >= 0; --i) {
auto& buffTex = fHWBufferTextures[i];
if (uniqueID != buffTex.fAttachedBufferUniqueID) {
continue;
}
if (i == fHWMaxUsedBufferTextureUnit) {
--fHWMaxUsedBufferTextureUnit;
}
this->setTextureUnit(i);
if (!buffTex.fKnownBound) {
SkASSERT(buffTex.fTextureID);
GL_CALL(BindTexture(GR_GL_TEXTURE_BUFFER, buffTex.fTextureID));
buffTex.fKnownBound = true;
}
GL_CALL(TexBuffer(GR_GL_TEXTURE_BUFFER,
this->glCaps().configSizedInternalFormat(buffTex.fTexelConfig), 0));
}
}
}
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, GrColor color,
GrRenderTarget* target, GrSurfaceOrigin origin) {
// parent class should never let us get here with no RT
SkASSERT(target);
this->handleDirtyContext();
GrGLfloat r, g, b, a;
static const GrGLfloat scale255 = 1.f / 255.f;
a = GrColorUnpackA(color) * scale255;
GrGLfloat scaleRGB = scale255;
r = GrColorUnpackR(color) * scaleRGB;
g = GrColorUnpackG(color) * scaleRGB;
b = GrColorUnpackB(color) * scaleRGB;
if (this->glCaps().useDrawToClearColor()) {
this->clearColorAsDraw(clip, r, g, b, a, target, origin);
return;
}
GrGLRenderTarget* glRT = static_cast<GrGLRenderTarget*>(target);
if (clip.scissorEnabled()) {
this->flushRenderTarget(glRT, origin, clip.scissorRect());
} else {
this->flushRenderTarget(glRT);
}
this->flushScissor(clip.scissorState(), glRT->getViewport(), origin);
this->flushWindowRectangles(clip.windowRectsState(), glRT, origin);
GL_CALL(ColorMask(GR_GL_TRUE, GR_GL_TRUE, GR_GL_TRUE, GR_GL_TRUE));
fHWWriteToColor = kYes_TriState;
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;
}
GL_CALL(ClearColor(r, g, b, a));
GL_CALL(Clear(GR_GL_COLOR_BUFFER_BIT));
}
void GrGLGpu::clearStencil(GrRenderTarget* target, int clearValue) {
if (!target) {
return;
}
GrStencilAttachment* sb = target->renderTargetPriv().getStencilAttachment();
// this should only be called internally when we know we have a
// stencil buffer.
SkASSERT(sb);
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();
if (!clearValue) {
sb->cleared();
}
}
void GrGLGpu::clearStencilClip(const GrFixedClip& clip,
bool insideStencilMask,
GrRenderTarget* target, GrSurfaceOrigin origin) {
SkASSERT(target);
this->handleDirtyContext();
if (this->glCaps().useDrawToClearStencilClip()) {
this->clearStencilClipAsDraw(clip, insideStencilMask, target, origin);
return;
}
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 GrOpList 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->getViewport(), 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::readPixelsSupported(GrRenderTarget* target, GrPixelConfig readConfig) {
#ifdef SK_BUILD_FOR_MAC
// Chromium may ask us to read back from locked IOSurfaces. Calling the command buffer's
// glGetIntegerv() with GL_IMPLEMENTATION_COLOR_READ_FORMAT/_TYPE causes the command buffer
// to make a call to check the framebuffer status which can hang the driver. So in Mac Chromium
// we always use a temporary surface to test for read pixels support.
// https://www.crbug.com/662802
if (this->glContext().driver() == kChromium_GrGLDriver) {
return this->readPixelsSupported(target->config(), readConfig);
}
#endif
auto bindRenderTarget = [this, target]() -> bool {
this->flushRenderTargetNoColorWrites(static_cast<GrGLRenderTarget*>(target));
return true;
};
auto unbindRenderTarget = []{};
auto getIntegerv = [this](GrGLenum query, GrGLint* value) {
GR_GL_GetIntegerv(this->glInterface(), query, value);
};
GrPixelConfig rtConfig = target->config();
return this->glCaps().readPixelsSupported(rtConfig, readConfig, getIntegerv, bindRenderTarget,
unbindRenderTarget);
}
bool GrGLGpu::readPixelsSupported(GrPixelConfig rtConfig, GrPixelConfig readConfig) {
sk_sp<GrTexture> temp;
auto bindRenderTarget = [this, rtConfig, &temp]() -> bool {
GrSurfaceDesc desc;
desc.fConfig = rtConfig;
desc.fWidth = desc.fHeight = 16;
if (this->glCaps().isConfigRenderable(rtConfig)) {
desc.fFlags = kRenderTarget_GrSurfaceFlag;
temp = this->createTexture(desc, SkBudgeted::kNo);
if (!temp) {
return false;
}
GrGLRenderTarget* glrt = static_cast<GrGLRenderTarget*>(temp->asRenderTarget());
this->flushRenderTargetNoColorWrites(glrt);
return true;
} else if (this->glCaps().canConfigBeFBOColorAttachment(rtConfig)) {
temp = this->createTexture(desc, SkBudgeted::kNo);
if (!temp) {
return false;
}
GrGLIRect vp;
this->bindSurfaceFBOForPixelOps(temp.get(), GR_GL_FRAMEBUFFER, &vp, kDst_TempFBOTarget);
fHWBoundRenderTargetUniqueID.makeInvalid();
return true;
}
return false;
};
auto unbindRenderTarget = [this, &temp]() {
this->unbindTextureFBOForPixelOps(GR_GL_FRAMEBUFFER, temp.get());
};
auto getIntegerv = [this](GrGLenum query, GrGLint* value) {
GR_GL_GetIntegerv(this->glInterface(), query, value);
};
return this->glCaps().readPixelsSupported(rtConfig, readConfig, getIntegerv, bindRenderTarget,
unbindRenderTarget);
}
bool GrGLGpu::readPixelsSupported(GrSurface* surfaceForConfig, GrPixelConfig readConfig) {
if (GrRenderTarget* rt = surfaceForConfig->asRenderTarget()) {
return this->readPixelsSupported(rt, readConfig);
} else {
GrPixelConfig config = surfaceForConfig->config();
return this->readPixelsSupported(config, readConfig);
}
}
bool GrGLGpu::onReadPixels(GrSurface* surface, int left, int top, int width, int height,
GrColorType dstColorType, void* buffer, size_t rowBytes) {
SkASSERT(surface);
GrGLRenderTarget* renderTarget = static_cast<GrGLRenderTarget*>(surface->asRenderTarget());
if (!renderTarget && !this->glCaps().canConfigBeFBOColorAttachment(surface->config())) {
return false;
}
// TODO: Avoid this conversion by making GrGLCaps work with color types.
auto dstAsConfig = GrColorTypeToPixelConfig(dstColorType, GrSRGBEncoded::kNo);
if (!this->readPixelsSupported(surface, dstAsConfig)) {
// If reading in half float format is not supported, then read in a temporary float buffer
// and convert to half float.
if (kRGBA_half_GrPixelConfig == dstAsConfig &&
this->readPixelsSupported(surface, kRGBA_float_GrPixelConfig)) {
std::unique_ptr<float[]> temp(new float[width * height * 4]);
if (this->onReadPixels(surface, left, top, width, height, GrColorType::kRGBA_F32,
temp.get(), width * sizeof(float) * 4)) {
uint8_t* dst = reinterpret_cast<uint8_t*>(buffer);
float* src = temp.get();
for (int j = 0; j < height; ++j) {
SkHalf* dstRow = reinterpret_cast<SkHalf*>(dst);
for (int i = 0; i < width; ++i) {
for (int color = 0; color < 4; color++) {
*dstRow++ = SkFloatToHalf(*src++);
}
}
dst += rowBytes;
}
return true;
}
}
return false;
}
GrGLenum externalFormat;
GrGLenum externalType;
if (!this->glCaps().getReadPixelsFormat(surface->config(), dstAsConfig, &externalFormat,
&externalType)) {
return false;
}
GrGLIRect glvp;
if (renderTarget) {
// resolve the render target if necessary
switch (renderTarget->getResolveType()) {
case GrGLRenderTarget::kCantResolve_ResolveType:
return false;
case GrGLRenderTarget::kAutoResolves_ResolveType:
this->flushRenderTargetNoColorWrites(renderTarget);
break;
case GrGLRenderTarget::kCanResolve_ResolveType:
this->onResolveRenderTarget(renderTarget);
// we don't track the state of the READ FBO ID.
this->bindFramebuffer(GR_GL_READ_FRAMEBUFFER, renderTarget->textureFBOID());
break;
default:
SK_ABORT("Unknown resolve type");
}
glvp = renderTarget->getViewport();
} else {
// Use a temporary FBO.
this->bindSurfaceFBOForPixelOps(surface, GR_GL_FRAMEBUFFER, &glvp, kSrc_TempFBOTarget);
fHWBoundRenderTargetUniqueID.makeInvalid();
}
// the read rect is viewport-relative
GrGLIRect readRect;
readRect.setRelativeTo(glvp, left, top, width, height, kTopLeft_GrSurfaceOrigin);
int bytesPerPixel = GrBytesPerPixel(dstAsConfig);
size_t tightRowBytes = bytesPerPixel * width;
size_t readDstRowBytes = tightRowBytes;
void* readDst = buffer;
// determine if GL can read using the passed rowBytes or if we need a scratch buffer.
SkAutoSMalloc<32 * sizeof(GrColor)> scratch;
if (rowBytes != tightRowBytes) {
if (this->glCaps().packRowLengthSupport() && !(rowBytes % bytesPerPixel)) {
GL_CALL(PixelStorei(GR_GL_PACK_ROW_LENGTH,
static_cast<GrGLint>(rowBytes / bytesPerPixel)));
readDstRowBytes = rowBytes;
} else {
scratch.reset(tightRowBytes * height);
readDst = scratch.get();
}
}
GL_CALL(PixelStorei(GR_GL_PACK_ALIGNMENT, config_alignment(dstAsConfig)));
GL_CALL(ReadPixels(readRect.fLeft, readRect.fBottom,
readRect.fWidth, readRect.fHeight,
externalFormat, externalType, readDst));
if (readDstRowBytes != tightRowBytes) {
SkASSERT(this->glCaps().packRowLengthSupport());
GL_CALL(PixelStorei(GR_GL_PACK_ROW_LENGTH, 0));
}
if (readDst != buffer) {
SkASSERT(readDst != buffer);
SkASSERT(rowBytes != tightRowBytes);
const char* src = reinterpret_cast<const char*>(readDst);
char* dst = reinterpret_cast<char*>(buffer);
SkRectMemcpy(dst, rowBytes, src, readDstRowBytes, tightRowBytes, height);
}
if (!renderTarget) {
this->unbindTextureFBOForPixelOps(GR_GL_FRAMEBUFFER, surface);
}
return true;
}
GrGpuRTCommandBuffer* GrGLGpu::createCommandBuffer(
GrRenderTarget* rt, GrSurfaceOrigin origin,
const GrGpuRTCommandBuffer::LoadAndStoreInfo& colorInfo,
const GrGpuRTCommandBuffer::StencilLoadAndStoreInfo& stencilInfo) {
return new GrGLGpuRTCommandBuffer(this, rt, origin, colorInfo, stencilInfo);
}
GrGpuTextureCommandBuffer* GrGLGpu::createCommandBuffer(GrTexture* texture,
GrSurfaceOrigin origin) {
return new GrGLGpuTextureCommandBuffer(this, texture, origin);
}
void GrGLGpu::flushRenderTarget(GrGLRenderTarget* target, GrSurfaceOrigin origin,
const SkIRect& bounds, bool disableSRGB) {
this->flushRenderTargetNoColorWrites(target, disableSRGB);
this->didWriteToSurface(target, origin, &bounds);
}
void GrGLGpu::flushRenderTarget(GrGLRenderTarget* target, bool disableSRGB) {
this->flushRenderTargetNoColorWrites(target, disableSRGB);
this->didWriteToSurface(target, kTopLeft_GrSurfaceOrigin, nullptr);
}
void GrGLGpu::flushRenderTargetNoColorWrites(GrGLRenderTarget* target, bool disableSRGB) {
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
if (this->glCaps().requiresFlushBetweenNonAndInstancedDraws()) {
fRequiresFlushBeforeNextInstancedDraw = false;
}
fHWBoundRenderTargetUniqueID = rtID;
this->flushViewport(target->getViewport());
}
if (this->glCaps().srgbWriteControl()) {
this->flushFramebufferSRGB(GrPixelConfigIsSRGB(target->config()) && !disableSRGB);
}
}
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(const GrGLIRect& viewport) {
if (fHWViewport != viewport) {
viewport.pushToGLViewport(this->glInterface());
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(const GrPipeline& pipeline,
const GrPrimitiveProcessor& primProc,
const GrMesh meshes[],
const GrPipeline::DynamicState dynamicStates[],
int meshCount) {
this->handleDirtyContext();
bool hasPoints = false;
for (int i = 0; i < meshCount; ++i) {
if (meshes[i].primitiveType() == GrPrimitiveType::kPoints) {
hasPoints = true;
break;
}
}
if (!this->flushGLState(pipeline, primProc, hasPoints)) {
return;
}
for (int i = 0; i < meshCount; ++i) {
if (GrXferBarrierType barrierType = pipeline.xferBarrierType(*this->caps())) {
this->xferBarrier(pipeline.renderTarget(), barrierType);
}
if (dynamicStates) {
if (pipeline.getScissorState().enabled()) {
GrGLRenderTarget* glRT = static_cast<GrGLRenderTarget*>(pipeline.renderTarget());
this->flushScissor(dynamicStates[i].fScissorRect,
glRT->getViewport(), pipeline.proxy()->origin());
}
}
if (this->glCaps().requiresCullFaceEnableDisableWhenDrawingLinesAfterNonLines() &&
GrIsPrimTypeLines(meshes[i].primitiveType()) &&
!GrIsPrimTypeLines(fLastPrimitiveType)) {
GL_CALL(Enable(GR_GL_CULL_FACE));
GL_CALL(Disable(GR_GL_CULL_FACE));
}
meshes[i].sendToGpu(this);
fLastPrimitiveType = meshes[i].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::kLinesAdjacency:
return GR_GL_LINES_ADJACENCY;
}
SK_ABORT("invalid GrPrimitiveType");
return GR_GL_TRIANGLES;
}
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));
}
if (this->glCaps().requiresFlushBetweenNonAndInstancedDraws()) {
fRequiresFlushBeforeNextInstancedDraw = true;
}
fStats.incNumDraws();
}
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);
GrGLvoid* const indices = reinterpret_cast<void*>(indexBuffer->baseOffset() +
sizeof(uint16_t) * baseIndex);
this->setupGeometry(indexBuffer, vertexBuffer, baseVertex, nullptr, 0, enablePrimitiveRestart);
if (this->glCaps().drawRangeElementsSupport()) {
GL_CALL(DrawRangeElements(glPrimType, minIndexValue, maxIndexValue, indexCount,
GR_GL_UNSIGNED_SHORT, indices));
} else {
GL_CALL(DrawElements(glPrimType, indexCount, GR_GL_UNSIGNED_SHORT, indices));
}
if (this->glCaps().requiresFlushBetweenNonAndInstancedDraws()) {
fRequiresFlushBeforeNextInstancedDraw = true;
}
fStats.incNumDraws();
}
void GrGLGpu::sendInstancedMeshToGpu(GrPrimitiveType primitiveType, const GrBuffer* vertexBuffer,
int vertexCount, int baseVertex,
const GrBuffer* instanceBuffer, int instanceCount,
int baseInstance) {
if (fRequiresFlushBeforeNextInstancedDraw) {
SkASSERT(this->glCaps().requiresFlushBetweenNonAndInstancedDraws());
GL_CALL(Flush());
fRequiresFlushBeforeNextInstancedDraw = false;
}
GrGLenum glPrimType = gr_primitive_type_to_gl_mode(primitiveType);
int maxInstances = this->glCaps().maxInstancesPerDrawArraysWithoutCrashing(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) {
if (fRequiresFlushBeforeNextInstancedDraw) {
SkASSERT(this->glCaps().requiresFlushBetweenNonAndInstancedDraws());
GL_CALL(Flush());
fRequiresFlushBeforeNextInstancedDraw = false;
}
const GrGLenum glPrimType = gr_primitive_type_to_gl_mode(primitiveType);
GrGLvoid* indices = reinterpret_cast<void*>(indexBuffer->baseOffset() +
sizeof(uint16_t) * baseIndex);
this->setupGeometry(indexBuffer, vertexBuffer, baseVertex, instanceBuffer, baseInstance,
enablePrimitiveRestart);
GL_CALL(DrawElementsInstanced(glPrimType, indexCount, GR_GL_UNSIGNED_SHORT, indices,
instanceCount));
fStats.incNumDraws();
}
void GrGLGpu::onResolveRenderTarget(GrRenderTarget* target) {
GrGLRenderTarget* rt = static_cast<GrGLRenderTarget*>(target);
if (rt->needsResolve()) {
// Some extensions automatically resolves the texture when it is read.
if (this->glCaps().usesMSAARenderBuffers()) {
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();
const GrGLIRect& vp = rt->getViewport();
const SkIRect dirtyRect = rt->getResolveRect();
// The dirty rect tracked on the RT is always stored in the native coordinates of the
// surface. Choose kTopLeft so no adjustments are made
static constexpr auto kDirtyRectOrigin = kTopLeft_GrSurfaceOrigin;
if (GrGLCaps::kES_Apple_MSFBOType == this->glCaps().msFBOType()) {
// Apple's extension uses the scissor as the blit bounds.
GrScissorState scissorState;
scissorState.set(dirtyRect);
this->flushScissor(scissorState, vp, kDirtyRectOrigin);
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 {
GrGLIRect rect;
rect.setRelativeTo(vp, dirtyRect, kDirtyRectOrigin);
l = rect.fLeft;
b = rect.fBottom;
r = rect.fLeft + rect.fWidth;
t = rect.fBottom + 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));
}
}
rt->flagAsResolved();
}
}
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) {
if (stencilSettings.isDisabled()) {
this->disableStencil();
} else if (fHWStencilSettings != stencilSettings) {
if (kYes_TriState != fHWStencilTestEnabled) {
GL_CALL(Enable(GR_GL_STENCIL_TEST));
fHWStencilTestEnabled = kYes_TriState;
}
if (stencilSettings.isTwoSided()) {
set_gl_stencil(this->glInterface(),
stencilSettings.front(),
GR_GL_FRONT);
set_gl_stencil(this->glInterface(),
stencilSettings.back(),
GR_GL_BACK);
} else {
set_gl_stencil(this->glInterface(),
stencilSettings.front(),
GR_GL_FRONT_AND_BACK);
}
fHWStencilSettings = stencilSettings;
}
}
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, bool stencilEnabled) {
// rt is only optional if useHWAA is false.
SkASSERT(rt || !useHWAA);
SkASSERT(!useHWAA || rt->isStencilBufferMultisampled());
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;
}
}
}
if (0 != this->caps()->maxRasterSamples()) {
if (useHWAA && GrFSAAType::kMixedSamples == rt->fsaaType() && !stencilEnabled) {
// Since stencil is disabled and we want more samples than are in the color buffer, we
// need to tell the rasterizer explicitly how many to run.
if (kYes_TriState != fHWRasterMultisampleEnabled) {
GL_CALL(Enable(GR_GL_RASTER_MULTISAMPLE));
fHWRasterMultisampleEnabled = kYes_TriState;
}
int numStencilSamples = rt->numStencilSamples();
// convert to GL's understanding of sample counts where 0 means nonMSAA.
numStencilSamples = 1 == numStencilSamples ? 0 : numStencilSamples;
if (numStencilSamples != fHWNumRasterSamples) {
SkASSERT(numStencilSamples <= this->caps()->maxRasterSamples());
GL_CALL(RasterSamples(numStencilSamples, GR_GL_TRUE));
fHWNumRasterSamples = numStencilSamples;
}
} else {
if (kNo_TriState != fHWRasterMultisampleEnabled) {
GL_CALL(Disable(GR_GL_RASTER_MULTISAMPLE));
fHWRasterMultisampleEnabled = kNo_TriState;
}
}
} else {
SkASSERT(!useHWAA || GrFSAAType::kMixedSamples != rt->fsaaType() || stencilEnabled);
}
}
void GrGLGpu::flushBlend(const GrXferProcessor::BlendInfo& blendInfo, const GrSwizzle& swizzle) {
// Any optimization to disable blending should have already been applied and
// tweaked the equation to "add" or "subtract", and the coeffs to (1, 0).
GrBlendEquation equation = blendInfo.fEquation;
GrBlendCoeff srcCoeff = blendInfo.fSrcBlend;
GrBlendCoeff dstCoeff = blendInfo.fDstBlend;
bool blendOff = (kAdd_GrBlendEquation == equation || kSubtract_GrBlendEquation == equation) &&
kOne_GrBlendCoeff == srcCoeff && kZero_GrBlendCoeff == dstCoeff;
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;
}
return;
}
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))) {
GrColor blendConst = blendInfo.fBlendConstant;
blendConst = swizzle.applyTo(blendConst);
if (!fHWBlendState.fConstColorValid || fHWBlendState.fConstColor != blendConst) {
GrGLfloat c[4];
GrColorToRGBAFloat(blendConst, c);
GL_CALL(BlendColor(c[0], c[1], c[2], c[3]));
fHWBlendState.fConstColor = blendConst;
fHWBlendState.fConstColorValid = true;
}
}
}
static inline GrGLenum wrap_mode_to_gl_wrap(GrSamplerState::WrapMode wrapMode) {
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;
};
SK_ABORT("Unknown wrap mode");
return 0;
}
static GrGLenum get_component_enum_from_char(char component) {
switch (component) {
case 'r':
return GR_GL_RED;
case 'g':
return GR_GL_GREEN;
case 'b':
return GR_GL_BLUE;
case 'a':
return GR_GL_ALPHA;
default:
SK_ABORT("Unsupported component");
return 0;
}
}
/** If texture swizzling is available using tex parameters then it is preferred over mangling
the generated shader code. This potentially allows greater reuse of cached shaders. */
static void get_tex_param_swizzle(GrPixelConfig config,
const GrGLCaps& caps,
GrGLenum* glSwizzle) {
const GrSwizzle& swizzle = caps.configSwizzle(config);
for (int i = 0; i < 4; ++i) {
glSwizzle[i] = get_component_enum_from_char(swizzle.c_str()[i]);
}
}
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");
return 0;
}
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");
return 0;
}
void GrGLGpu::bindTexture(int unitIdx, const GrSamplerState& samplerState, GrGLTexture* texture,
GrSurfaceOrigin textureOrigin) {
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
// If we created a rt/tex and rendered to it without using a texture and now we're texturing
// from the rt it will still be the last bound texture, but it needs resolving. So keep this
// out of the "last != next" check.
GrGLRenderTarget* texRT = static_cast<GrGLRenderTarget*>(texture->asRenderTarget());
if (texRT) {
this->onResolveRenderTarget(texRT);
}
GrGpuResource::UniqueID textureID = texture->uniqueID();
GrGLenum target = texture->target();
if (fHWBoundTextureUniqueIDs[unitIdx] != textureID) {
this->setTextureUnit(unitIdx);
GL_CALL(BindTexture(target, texture->textureID()));
fHWBoundTextureUniqueIDs[unitIdx] = textureID;
}
ResetTimestamp timestamp;
const GrGLTexture::TexParams& oldTexParams = texture->getCachedTexParams(&timestamp);
bool setAll = timestamp < this->getResetTimestamp();
GrGLTexture::TexParams newTexParams;
GrSamplerState::Filter filterMode = samplerState.filter();
if (GrSamplerState::Filter::kMipMap == filterMode) {
if (!this->caps()->mipMapSupport()