| /* |
| * Copyright 2017 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "GrTextureOp.h" |
| #include "GrAppliedClip.h" |
| #include "GrDrawOpTest.h" |
| #include "GrGeometryProcessor.h" |
| #include "GrMeshDrawOp.h" |
| #include "GrOpFlushState.h" |
| #include "GrQuad.h" |
| #include "GrResourceProvider.h" |
| #include "GrTexture.h" |
| #include "GrTextureProxy.h" |
| #include "SkGr.h" |
| #include "glsl/GrGLSLColorSpaceXformHelper.h" |
| #include "glsl/GrGLSLGeometryProcessor.h" |
| #include "glsl/GrGLSLVarying.h" |
| |
| namespace { |
| |
| /** |
| * Geometry Processor that draws a texture modulated by a per-vertex color. Used by TextureOp |
| * below. |
| */ |
| class TextureGeometryProcessor : public GrGeometryProcessor { |
| public: |
| struct Vertex { |
| SkPoint fPosition; |
| SkPoint fTextureCoords; |
| GrColor fColor; |
| }; |
| static sk_sp<GrGeometryProcessor> Make(sk_sp<GrTextureProxy> proxy, |
| sk_sp<GrColorSpaceXform> csxf, |
| GrSamplerParams::FilterMode filter) { |
| return sk_sp<TextureGeometryProcessor>( |
| new TextureGeometryProcessor(std::move(proxy), std::move(csxf), filter)); |
| } |
| |
| const char* name() const override { return "TextureGeometryProcessor"; } |
| |
| void getGLSLProcessorKey(const GrShaderCaps&, GrProcessorKeyBuilder* b) const override { |
| b->add32(GrColorSpaceXform::XformKey(fColorSpaceXform.get())); |
| } |
| |
| GrGLSLPrimitiveProcessor* createGLSLInstance(const GrShaderCaps& caps) const override { |
| class GLSLProcessor : public GrGLSLGeometryProcessor { |
| public: |
| void setData(const GrGLSLProgramDataManager& pdman, const GrPrimitiveProcessor& proc, |
| FPCoordTransformIter&& transformIter) override { |
| const auto& textureGP = proc.cast<TextureGeometryProcessor>(); |
| this->setTransformDataHelper(SkMatrix::I(), pdman, &transformIter); |
| if (fColorSpaceXformHelper.isValid()) { |
| fColorSpaceXformHelper.setData(pdman, textureGP.fColorSpaceXform.get()); |
| } |
| } |
| |
| private: |
| void onEmitCode(EmitArgs& args, GrGPArgs* gpArgs) override { |
| const auto& textureGP = args.fGP.cast<TextureGeometryProcessor>(); |
| fColorSpaceXformHelper.emitCode( |
| args.fUniformHandler, textureGP.fColorSpaceXform.get()); |
| args.fVaryingHandler->setNoPerspective(); |
| args.fVaryingHandler->emitAttributes(textureGP); |
| this->writeOutputPosition(args.fVertBuilder, gpArgs, textureGP.fPositions.fName); |
| this->emitTransforms(args.fVertBuilder, |
| args.fVaryingHandler, |
| args.fUniformHandler, |
| gpArgs->fPositionVar, |
| textureGP.fTextureCoords.fName, |
| args.fFPCoordTransformHandler); |
| args.fVaryingHandler->addFlatPassThroughAttribute(&textureGP.fColors, |
| args.fOutputColor); |
| args.fFragBuilder->codeAppend("highp float2 texCoord;"); |
| args.fVaryingHandler->addPassThroughAttribute(&textureGP.fTextureCoords, |
| "texCoord"); |
| args.fFragBuilder->codeAppendf("%s = ", args.fOutputColor); |
| args.fFragBuilder->appendTextureLookupAndModulate(args.fOutputColor, |
| args.fTexSamplers[0], |
| "texCoord", |
| kVec2f_GrSLType, |
| &fColorSpaceXformHelper); |
| args.fFragBuilder->codeAppend(";"); |
| args.fFragBuilder->codeAppendf("%s = float4(1);", args.fOutputCoverage); |
| } |
| GrGLSLColorSpaceXformHelper fColorSpaceXformHelper; |
| }; |
| return new GLSLProcessor; |
| } |
| |
| private: |
| TextureGeometryProcessor(sk_sp<GrTextureProxy> proxy, sk_sp<GrColorSpaceXform> csxf, |
| GrSamplerParams::FilterMode filter) |
| : fSampler(std::move(proxy), filter), fColorSpaceXform(std::move(csxf)) { |
| this->initClassID<TextureGeometryProcessor>(); |
| fPositions = |
| this->addVertexAttrib("position", kVec2f_GrVertexAttribType, kHigh_GrSLPrecision); |
| fTextureCoords = this->addVertexAttrib("textureCoords", kVec2f_GrVertexAttribType, |
| kHigh_GrSLPrecision); |
| fColors = this->addVertexAttrib("color", kVec4ub_GrVertexAttribType); |
| this->addTextureSampler(&fSampler); |
| } |
| |
| Attribute fPositions; |
| Attribute fTextureCoords; |
| Attribute fColors; |
| TextureSampler fSampler; |
| sk_sp<GrColorSpaceXform> fColorSpaceXform; |
| }; |
| |
| /** |
| * Op that implements GrTextureOp::Make. It draws textured quads. Each quad can modulate against a |
| * the texture by color. The blend with the destination is always src-over. The edges are non-AA. |
| */ |
| class TextureOp final : public GrMeshDrawOp { |
| public: |
| static std::unique_ptr<GrDrawOp> Make(sk_sp<GrTextureProxy> proxy, |
| GrSamplerParams::FilterMode filter, GrColor color, |
| const SkRect srcRect, const SkRect dstRect, |
| const SkMatrix& viewMatrix, sk_sp<GrColorSpaceXform> csxf, |
| bool allowSRBInputs) { |
| return std::unique_ptr<GrDrawOp>(new TextureOp(std::move(proxy), filter, color, srcRect, |
| dstRect, viewMatrix, std::move(csxf), |
| allowSRBInputs)); |
| } |
| |
| ~TextureOp() override { fFinalized ? fProxy->completedRead() : fProxy->unref(); } |
| |
| const char* name() const override { return "TextureOp"; } |
| |
| SkString dumpInfo() const override { |
| SkString str; |
| str.appendf("Filter: %d AllowSRGBInputs: %d\n", fFilter, fAllowSRGBInputs); |
| str.appendf("# draws: %d\n", fDraws.count()); |
| for (int i = 0; i < fDraws.count(); ++i) { |
| const Draw& draw = fDraws[i]; |
| str.appendf( |
| "%d: Color: 0x%08x, TexRect [L: %.2f, T: %.2f, R: %.2f, B: %.2f] Quad [(%.2f, " |
| "%.2f), (%.2f, %.2f), (%.2f, %.2f), (%.2f, %.2f)]\n", |
| i, draw.fColor, draw.fSrcRect.fLeft, draw.fSrcRect.fTop, draw.fSrcRect.fRight, |
| draw.fSrcRect.fBottom, draw.fQuad.points()[0].fX, draw.fQuad.points()[0].fY, |
| draw.fQuad.points()[1].fX, draw.fQuad.points()[1].fY, draw.fQuad.points()[2].fX, |
| draw.fQuad.points()[2].fY, draw.fQuad.points()[3].fX, |
| draw.fQuad.points()[3].fY); |
| } |
| str += INHERITED::dumpInfo(); |
| return str; |
| } |
| |
| RequiresDstTexture finalize(const GrCaps& caps, const GrAppliedClip* clip) override { |
| SkASSERT(!fFinalized); |
| fFinalized = true; |
| fProxy->addPendingRead(); |
| fProxy->unref(); |
| return RequiresDstTexture::kNo; |
| } |
| |
| FixedFunctionFlags fixedFunctionFlags() const override { return FixedFunctionFlags::kNone; } |
| |
| DEFINE_OP_CLASS_ID |
| |
| private: |
| TextureOp(sk_sp<GrTextureProxy> proxy, GrSamplerParams::FilterMode filter, GrColor color, |
| const SkRect& srcRect, const SkRect& dstRect, const SkMatrix& viewMatrix, |
| sk_sp<GrColorSpaceXform> csxf, bool allowSRGBInputs) |
| : INHERITED(ClassID()) |
| , fProxy(proxy.release()) |
| , fFilter(filter) |
| , fColorSpaceXform(std::move(csxf)) |
| , fFinalized(false) |
| , fAllowSRGBInputs(allowSRGBInputs) { |
| Draw& draw = fDraws.push_back(); |
| draw.fSrcRect = srcRect; |
| draw.fColor = color; |
| draw.fQuad.setFromMappedRect(dstRect, viewMatrix); |
| SkRect bounds; |
| bounds.setBounds(draw.fQuad.points(), 4); |
| this->setBounds(bounds, HasAABloat::kNo, IsZeroArea::kNo); |
| } |
| |
| void onPrepareDraws(Target* target) override { |
| if (!fProxy->instantiate(target->resourceProvider())) { |
| return; |
| } |
| sk_sp<GrGeometryProcessor> gp = TextureGeometryProcessor::Make( |
| sk_ref_sp(fProxy), std::move(fColorSpaceXform), fFilter); |
| GrPipeline::InitArgs args; |
| args.fProxy = target->proxy(); |
| args.fCaps = &target->caps(); |
| args.fResourceProvider = target->resourceProvider(); |
| args.fFlags = fAllowSRGBInputs ? GrPipeline::kAllowSRGBInputs_Flag : 0; |
| const GrPipeline* pipeline = target->allocPipeline(args, GrProcessorSet::MakeEmptySet(), |
| target->detachAppliedClip()); |
| |
| using Vertex = TextureGeometryProcessor::Vertex; |
| SkASSERT(gp->getVertexStride() == sizeof(Vertex)); |
| |
| int vstart; |
| const GrBuffer* vbuffer; |
| auto vertices = (Vertex*)target->makeVertexSpace(sizeof(Vertex), 4 * fDraws.count(), |
| &vbuffer, &vstart); |
| if (!vertices) { |
| SkDebugf("Could not allocate vertices\n"); |
| return; |
| } |
| sk_sp<const GrBuffer> ibuffer; |
| if (fDraws.count() > 1) { |
| ibuffer.reset(target->resourceProvider()->refQuadIndexBuffer()); |
| if (!ibuffer) { |
| SkDebugf("Could not allocate quad indices\n"); |
| return; |
| } |
| } |
| GrTexture* texture = fProxy->priv().peekTexture(); |
| float iw = 1.f / texture->width(); |
| float ih = 1.f / texture->height(); |
| if (fDraws.count() > 1) { |
| for (int i = 0; i < fDraws.count(); ++i) { |
| float tl = iw * fDraws[i].fSrcRect.fLeft; |
| float tr = iw * fDraws[i].fSrcRect.fRight; |
| float tt = ih * fDraws[i].fSrcRect.fTop; |
| float tb = ih * fDraws[i].fSrcRect.fBottom; |
| if (fProxy->origin() == kBottomLeft_GrSurfaceOrigin) { |
| tt = 1.f - tt; |
| tb = 1.f - tb; |
| } |
| vertices[0 + 4 * i].fPosition = fDraws[i].fQuad.points()[0]; |
| vertices[0 + 4 * i].fTextureCoords = {tl, tt}; |
| vertices[0 + 4 * i].fColor = fDraws[i].fColor; |
| vertices[1 + 4 * i].fPosition = fDraws[i].fQuad.points()[1]; |
| vertices[1 + 4 * i].fTextureCoords = {tl, tb}; |
| vertices[1 + 4 * i].fColor = fDraws[i].fColor; |
| vertices[2 + 4 * i].fPosition = fDraws[i].fQuad.points()[2]; |
| vertices[2 + 4 * i].fTextureCoords = {tr, tb}; |
| vertices[2 + 4 * i].fColor = fDraws[i].fColor; |
| vertices[3 + 4 * i].fPosition = fDraws[i].fQuad.points()[3]; |
| vertices[3 + 4 * i].fTextureCoords = {tr, tt}; |
| vertices[3 + 4 * i].fColor = fDraws[i].fColor; |
| } |
| GrMesh mesh(GrPrimitiveType::kTriangles); |
| mesh.setIndexedPatterned(ibuffer.get(), 6, 4, fDraws.count(), |
| GrResourceProvider::QuadCountOfQuadBuffer()); |
| mesh.setVertexData(vbuffer, vstart); |
| target->draw(gp.get(), pipeline, mesh); |
| } else { |
| float tl = iw * fDraws[0].fSrcRect.fLeft; |
| float tr = iw * fDraws[0].fSrcRect.fRight; |
| float tt = ih * fDraws[0].fSrcRect.fTop; |
| float tb = ih * fDraws[0].fSrcRect.fBottom; |
| if (fProxy->origin() == kBottomLeft_GrSurfaceOrigin) { |
| tt = 1.f - tt; |
| tb = 1.f - tb; |
| } |
| vertices[0].fPosition = fDraws[0].fQuad.points()[0]; |
| vertices[0].fTextureCoords = {tl, tt}; |
| vertices[0].fColor = fDraws[0].fColor; |
| vertices[1].fPosition = fDraws[0].fQuad.points()[3]; |
| vertices[1].fTextureCoords = {tr, tt}; |
| vertices[1].fColor = fDraws[0].fColor; |
| vertices[2].fPosition = fDraws[0].fQuad.points()[1]; |
| vertices[2].fTextureCoords = {tl, tb}; |
| vertices[2].fColor = fDraws[0].fColor; |
| vertices[3].fPosition = fDraws[0].fQuad.points()[2]; |
| vertices[3].fTextureCoords = {tr, tb}; |
| vertices[3].fColor = fDraws[0].fColor; |
| GrMesh mesh(GrPrimitiveType::kTriangleStrip); |
| mesh.setNonIndexedNonInstanced(4); |
| mesh.setVertexData(vbuffer, vstart); |
| target->draw(gp.get(), pipeline, mesh); |
| } |
| } |
| |
| bool onCombineIfPossible(GrOp* t, const GrCaps& caps) override { |
| const auto* that = t->cast<TextureOp>(); |
| if (fProxy->uniqueID() != that->fProxy->uniqueID() || fFilter != that->fFilter || |
| !GrColorSpaceXform::Equals(fColorSpaceXform.get(), that->fColorSpaceXform.get())) { |
| return false; |
| } |
| fDraws.push_back_n(that->fDraws.count(), that->fDraws.begin()); |
| this->joinBounds(*that); |
| return true; |
| } |
| |
| struct Draw { |
| SkRect fSrcRect; |
| GrQuad fQuad; |
| GrColor fColor; |
| }; |
| SkSTArray<1, Draw, true> fDraws; |
| GrTextureProxy* fProxy; |
| GrSamplerParams::FilterMode fFilter; |
| sk_sp<GrColorSpaceXform> fColorSpaceXform; |
| // Used to track whether fProxy is ref'ed or has a pending IO after finalize() is called. |
| bool fFinalized : 1; |
| bool fAllowSRGBInputs : 1; |
| typedef GrMeshDrawOp INHERITED; |
| }; |
| |
| } // anonymous namespace |
| |
| namespace GrTextureOp { |
| |
| std::unique_ptr<GrDrawOp> Make(sk_sp<GrTextureProxy> proxy, GrSamplerParams::FilterMode filter, |
| GrColor color, const SkRect& srcRect, const SkRect& dstRect, |
| const SkMatrix& viewMatrix, sk_sp<GrColorSpaceXform> csxf, |
| bool allowSRGBInputs) { |
| SkASSERT(!viewMatrix.hasPerspective()); |
| return TextureOp::Make(std::move(proxy), filter, color, srcRect, dstRect, viewMatrix, |
| std::move(csxf), allowSRGBInputs); |
| } |
| |
| } // namespace GrTextureOp |
| |
| #if GR_TEST_UTILS |
| #include "GrContext.h" |
| |
| GR_DRAW_OP_TEST_DEFINE(TextureOp) { |
| GrSurfaceDesc desc; |
| desc.fConfig = kRGBA_8888_GrPixelConfig; |
| desc.fHeight = random->nextULessThan(90) + 10; |
| desc.fWidth = random->nextULessThan(90) + 10; |
| desc.fOrigin = random->nextBool() ? kTopLeft_GrSurfaceOrigin : kBottomLeft_GrSurfaceOrigin; |
| SkBackingFit fit = random->nextBool() ? SkBackingFit::kApprox : SkBackingFit::kExact; |
| auto proxy = |
| GrSurfaceProxy::MakeDeferred(context->resourceProvider(), desc, fit, SkBudgeted::kNo); |
| SkRect rect = GrTest::TestRect(random); |
| SkRect srcRect; |
| srcRect.fLeft = random->nextRangeScalar(0.f, proxy->width() / 2.f); |
| srcRect.fRight = random->nextRangeScalar(0.f, proxy->width()) + proxy->width() / 2.f; |
| srcRect.fTop = random->nextRangeScalar(0.f, proxy->height() / 2.f); |
| srcRect.fBottom = random->nextRangeScalar(0.f, proxy->height()) + proxy->height() / 2.f; |
| SkMatrix viewMatrix = GrTest::TestMatrixPreservesRightAngles(random); |
| GrColor color = SkColorToPremulGrColor(random->nextU()); |
| GrSamplerParams::FilterMode filter = (GrSamplerParams::FilterMode)random->nextULessThan( |
| GrSamplerParams::kMipMap_FilterMode + 1); |
| auto csxf = GrTest::TestColorXform(random); |
| bool allowSRGBInputs = random->nextBool(); |
| return GrTextureOp::Make(std::move(proxy), filter, color, srcRect, rect, viewMatrix, |
| std::move(csxf), allowSRGBInputs); |
| } |
| |
| #endif |
