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/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "GrDrawAtlasOp.h"
#include "GrDrawOpTest.h"
#include "GrOpFlushState.h"
#include "SkGr.h"
#include "SkRSXform.h"
#include "SkRandom.h"
#include "SkRectPriv.h"
static sk_sp<GrGeometryProcessor> make_gp(bool hasColors,
GrColor color,
const SkMatrix& viewMatrix) {
using namespace GrDefaultGeoProcFactory;
Color gpColor(color);
if (hasColors) {
gpColor.fType = Color::kPremulGrColorAttribute_Type;
}
return GrDefaultGeoProcFactory::Make(gpColor, Coverage::kSolid_Type,
LocalCoords::kHasExplicit_Type, viewMatrix);
}
GrDrawAtlasOp::GrDrawAtlasOp(const Helper::MakeArgs& helperArgs, GrColor color,
const SkMatrix& viewMatrix, GrAAType aaType, int spriteCount,
const SkRSXform* xforms, const SkRect* rects, const SkColor* colors)
: INHERITED(ClassID()), fHelper(helperArgs, aaType), fColor(color) {
SkASSERT(xforms);
SkASSERT(rects);
fViewMatrix = viewMatrix;
Geometry& installedGeo = fGeoData.push_back();
installedGeo.fColor = color;
// Figure out stride and offsets
// Order within the vertex is: position [color] texCoord
size_t texOffset = sizeof(SkPoint);
size_t vertexStride = 2 * sizeof(SkPoint);
fHasColors = SkToBool(colors);
if (colors) {
texOffset += sizeof(GrColor);
vertexStride += sizeof(GrColor);
}
// Compute buffer size and alloc buffer
fQuadCount = spriteCount;
int allocSize = static_cast<int>(4 * vertexStride * spriteCount);
installedGeo.fVerts.reset(allocSize);
uint8_t* currVertex = installedGeo.fVerts.begin();
SkRect bounds = SkRectPriv::MakeLargestInverted();
int paintAlpha = GrColorUnpackA(installedGeo.fColor);
for (int spriteIndex = 0; spriteIndex < spriteCount; ++spriteIndex) {
// Transform rect
SkPoint strip[4];
const SkRect& currRect = rects[spriteIndex];
xforms[spriteIndex].toTriStrip(currRect.width(), currRect.height(), strip);
// Copy colors if necessary
if (colors) {
// convert to GrColor
SkColor color = colors[spriteIndex];
if (paintAlpha != 255) {
color = SkColorSetA(color, SkMulDiv255Round(SkColorGetA(color), paintAlpha));
}
GrColor grColor = SkColorToPremulGrColor(color);
*(reinterpret_cast<GrColor*>(currVertex + sizeof(SkPoint))) = grColor;
*(reinterpret_cast<GrColor*>(currVertex + vertexStride + sizeof(SkPoint))) = grColor;
*(reinterpret_cast<GrColor*>(currVertex + 2 * vertexStride + sizeof(SkPoint))) =
grColor;
*(reinterpret_cast<GrColor*>(currVertex + 3 * vertexStride + sizeof(SkPoint))) =
grColor;
}
// Copy position and uv to verts
*(reinterpret_cast<SkPoint*>(currVertex)) = strip[0];
*(reinterpret_cast<SkPoint*>(currVertex + texOffset)) =
SkPoint::Make(currRect.fLeft, currRect.fTop);
SkRectPriv::GrowToInclude(&bounds, strip[0]);
currVertex += vertexStride;
*(reinterpret_cast<SkPoint*>(currVertex)) = strip[1];
*(reinterpret_cast<SkPoint*>(currVertex + texOffset)) =
SkPoint::Make(currRect.fLeft, currRect.fBottom);
SkRectPriv::GrowToInclude(&bounds, strip[1]);
currVertex += vertexStride;
*(reinterpret_cast<SkPoint*>(currVertex)) = strip[2];
*(reinterpret_cast<SkPoint*>(currVertex + texOffset)) =
SkPoint::Make(currRect.fRight, currRect.fTop);
SkRectPriv::GrowToInclude(&bounds, strip[2]);
currVertex += vertexStride;
*(reinterpret_cast<SkPoint*>(currVertex)) = strip[3];
*(reinterpret_cast<SkPoint*>(currVertex + texOffset)) =
SkPoint::Make(currRect.fRight, currRect.fBottom);
SkRectPriv::GrowToInclude(&bounds, strip[3]);
currVertex += vertexStride;
}
this->setTransformedBounds(bounds, viewMatrix, HasAABloat::kNo, IsZeroArea::kNo);
}
SkString GrDrawAtlasOp::dumpInfo() const {
SkString string;
for (const auto& geo : fGeoData) {
string.appendf("Color: 0x%08x, Quads: %d\n", geo.fColor, geo.fVerts.count() / 4);
}
string += fHelper.dumpInfo();
string += INHERITED::dumpInfo();
return string;
}
void GrDrawAtlasOp::onPrepareDraws(Target* target) {
// Setup geometry processor
sk_sp<GrGeometryProcessor> gp(make_gp(this->hasColors(), this->color(), this->viewMatrix()));
int instanceCount = fGeoData.count();
size_t vertexStride = gp->getVertexStride();
SkASSERT(vertexStride ==
sizeof(SkPoint) + sizeof(SkPoint) + (this->hasColors() ? sizeof(GrColor) : 0));
QuadHelper helper;
int numQuads = this->quadCount();
void* verts = helper.init(target, vertexStride, numQuads);
if (!verts) {
SkDebugf("Could not allocate vertices\n");
return;
}
uint8_t* vertPtr = reinterpret_cast<uint8_t*>(verts);
for (int i = 0; i < instanceCount; i++) {
const Geometry& args = fGeoData[i];
size_t allocSize = args.fVerts.count();
memcpy(vertPtr, args.fVerts.begin(), allocSize);
vertPtr += allocSize;
}
helper.recordDraw(target, gp.get(), fHelper.makePipeline(target));
}
bool GrDrawAtlasOp::onCombineIfPossible(GrOp* t, const GrCaps& caps) {
GrDrawAtlasOp* that = t->cast<GrDrawAtlasOp>();
if (!fHelper.isCompatible(that->fHelper, caps, this->bounds(), that->bounds())) {
return false;
}
// We currently use a uniform viewmatrix for this op.
if (!this->viewMatrix().cheapEqualTo(that->viewMatrix())) {
return false;
}
if (this->hasColors() != that->hasColors()) {
return false;
}
if (!this->hasColors() && this->color() != that->color()) {
return false;
}
fGeoData.push_back_n(that->fGeoData.count(), that->fGeoData.begin());
fQuadCount += that->quadCount();
this->joinBounds(*that);
return true;
}
GrDrawOp::FixedFunctionFlags GrDrawAtlasOp::fixedFunctionFlags() const {
return fHelper.fixedFunctionFlags();
}
GrDrawOp::RequiresDstTexture GrDrawAtlasOp::finalize(const GrCaps& caps,
const GrAppliedClip* clip,
GrPixelConfigIsClamped dstIsClamped) {
GrProcessorAnalysisColor gpColor;
if (this->hasColors()) {
gpColor.setToUnknown();
} else {
gpColor.setToConstant(fColor);
}
auto result = fHelper.xpRequiresDstTexture(caps, clip, dstIsClamped,
GrProcessorAnalysisCoverage::kNone, &gpColor);
if (gpColor.isConstant(&fColor)) {
fHasColors = false;
}
return result;
}
#if GR_TEST_UTILS
static SkRSXform random_xform(SkRandom* random) {
static const SkScalar kMinExtent = -100.f;
static const SkScalar kMaxExtent = 100.f;
static const SkScalar kMinScale = 0.1f;
static const SkScalar kMaxScale = 100.f;
static const SkScalar kMinRotate = -SK_ScalarPI;
static const SkScalar kMaxRotate = SK_ScalarPI;
SkRSXform xform = SkRSXform::MakeFromRadians(random->nextRangeScalar(kMinScale, kMaxScale),
random->nextRangeScalar(kMinRotate, kMaxRotate),
random->nextRangeScalar(kMinExtent, kMaxExtent),
random->nextRangeScalar(kMinExtent, kMaxExtent),
random->nextRangeScalar(kMinExtent, kMaxExtent),
random->nextRangeScalar(kMinExtent, kMaxExtent));
return xform;
}
static SkRect random_texRect(SkRandom* random) {
static const SkScalar kMinCoord = 0.0f;
static const SkScalar kMaxCoord = 1024.f;
SkRect texRect = SkRect::MakeLTRB(random->nextRangeScalar(kMinCoord, kMaxCoord),
random->nextRangeScalar(kMinCoord, kMaxCoord),
random->nextRangeScalar(kMinCoord, kMaxCoord),
random->nextRangeScalar(kMinCoord, kMaxCoord));
texRect.sort();
return texRect;
}
static void randomize_params(uint32_t count, SkRandom* random, SkTArray<SkRSXform>* xforms,
SkTArray<SkRect>* texRects, SkTArray<GrColor>* colors,
bool hasColors) {
for (uint32_t v = 0; v < count; v++) {
xforms->push_back(random_xform(random));
texRects->push_back(random_texRect(random));
if (hasColors) {
colors->push_back(GrRandomColor(random));
}
}
}
GR_DRAW_OP_TEST_DEFINE(GrDrawAtlasOp) {
uint32_t spriteCount = random->nextRangeU(1, 100);
SkTArray<SkRSXform> xforms(spriteCount);
SkTArray<SkRect> texRects(spriteCount);
SkTArray<GrColor> colors;
bool hasColors = random->nextBool();
randomize_params(spriteCount, random, &xforms, &texRects, &colors, hasColors);
SkMatrix viewMatrix = GrTest::TestMatrix(random);
GrAAType aaType = GrAAType::kNone;
if (GrFSAAType::kUnifiedMSAA == fsaaType && random->nextBool()) {
aaType = GrAAType::kMSAA;
}
return GrDrawAtlasOp::Make(context, std::move(paint), viewMatrix, aaType, spriteCount,
xforms.begin(), texRects.begin(),
hasColors ? colors.begin() : nullptr);
}
#endif