| /* |
| * 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 "GrCaps.h" |
| #include "GrDrawOpTest.h" |
| #include "GrGeometryProcessor.h" |
| #include "GrMeshDrawOp.h" |
| #include "GrOpFlushState.h" |
| #include "GrQuad.h" |
| #include "GrResourceProvider.h" |
| #include "GrShaderCaps.h" |
| #include "GrTexture.h" |
| #include "GrTexturePriv.h" |
| #include "GrTextureProxy.h" |
| #include "SkGr.h" |
| #include "SkMathPriv.h" |
| #include "SkPoint.h" |
| #include "SkPoint3.h" |
| #include "glsl/GrGLSLColorSpaceXformHelper.h" |
| #include "glsl/GrGLSLFragmentShaderBuilder.h" |
| #include "glsl/GrGLSLGeometryProcessor.h" |
| #include "glsl/GrGLSLVarying.h" |
| #include "glsl/GrGLSLVertexGeoBuilder.h" |
| |
| namespace { |
| |
| /** |
| * Geometry Processor that draws a texture modulated by a vertex color (though, this is meant to be |
| * the same value across all vertices of a quad and uses flat interpolation when available). This is |
| * used by TextureOp below. |
| */ |
| class TextureGeometryProcessor : public GrGeometryProcessor { |
| public: |
| struct Vertex { |
| SkPoint fPosition; |
| SkPoint fTextureCoords; |
| GrColor fColor; |
| }; |
| struct AAVertex { |
| SkPoint fPosition; |
| SkPoint fTextureCoords; |
| SkPoint3 fEdges[4]; |
| GrColor fColor; |
| }; |
| struct MultiTextureVertex { |
| SkPoint fPosition; |
| int fTextureIdx; |
| SkPoint fTextureCoords; |
| GrColor fColor; |
| }; |
| struct AAMultiTextureVertex { |
| SkPoint fPosition; |
| int fTextureIdx; |
| SkPoint fTextureCoords; |
| SkPoint3 fEdges[4]; |
| GrColor fColor; |
| }; |
| |
| // Maximum number of textures supported by this op. Must also be checked against the caps |
| // limit. These numbers were based on some limited experiments on a HP Z840 and Pixel XL 2016 |
| // and could probably use more tuning. |
| #ifdef SK_BUILD_FOR_ANDROID |
| static constexpr int kMaxTextures = 4; |
| #else |
| static constexpr int kMaxTextures = 8; |
| #endif |
| |
| static int SupportsMultitexture(const GrShaderCaps& caps) { |
| return caps.integerSupport() && caps.maxFragmentSamplers() > 1; |
| } |
| |
| static sk_sp<GrGeometryProcessor> Make(sk_sp<GrTextureProxy> proxies[], int proxyCnt, |
| sk_sp<GrColorSpaceXform> csxf, bool coverageAA, |
| const GrSamplerState::Filter filters[], |
| const GrShaderCaps& caps) { |
| // We use placement new to avoid always allocating space for kMaxTextures TextureSampler |
| // instances. |
| int samplerCnt = NumSamplersToUse(proxyCnt, caps); |
| size_t size = sizeof(TextureGeometryProcessor) + sizeof(TextureSampler) * (samplerCnt - 1); |
| void* mem = GrGeometryProcessor::operator new(size); |
| return sk_sp<TextureGeometryProcessor>(new (mem) TextureGeometryProcessor( |
| proxies, proxyCnt, samplerCnt, std::move(csxf), coverageAA, filters, caps)); |
| } |
| |
| ~TextureGeometryProcessor() override { |
| int cnt = this->numTextureSamplers(); |
| for (int i = 1; i < cnt; ++i) { |
| fSamplers[i].~TextureSampler(); |
| } |
| } |
| |
| const char* name() const override { return "TextureGeometryProcessor"; } |
| |
| void getGLSLProcessorKey(const GrShaderCaps&, GrProcessorKeyBuilder* b) const override { |
| b->add32(GrColorSpaceXform::XformKey(fColorSpaceXform.get())); |
| b->add32(static_cast<uint32_t>(this->usesCoverageEdgeAA())); |
| } |
| |
| 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, |
| textureGP.fTextureCoords.asShaderVar(), |
| args.fFPCoordTransformHandler); |
| if (args.fShaderCaps->preferFlatInterpolation()) { |
| args.fVaryingHandler->addFlatPassThroughAttribute(&textureGP.fColors, |
| args.fOutputColor); |
| } else { |
| args.fVaryingHandler->addPassThroughAttribute(&textureGP.fColors, |
| args.fOutputColor); |
| } |
| args.fFragBuilder->codeAppend("float2 texCoord;"); |
| args.fVaryingHandler->addPassThroughAttribute(&textureGP.fTextureCoords, |
| "texCoord"); |
| if (textureGP.numTextureSamplers() > 1) { |
| SkASSERT(args.fShaderCaps->integerSupport()); |
| args.fFragBuilder->codeAppend("int texIdx;"); |
| if (args.fShaderCaps->flatInterpolationSupport()) { |
| args.fVaryingHandler->addFlatPassThroughAttribute(&textureGP.fTextureIdx, |
| "texIdx"); |
| } else { |
| args.fVaryingHandler->addPassThroughAttribute(&textureGP.fTextureIdx, |
| "texIdx"); |
| } |
| args.fFragBuilder->codeAppend("switch (texIdx) {"); |
| for (int i = 0; i < textureGP.numTextureSamplers(); ++i) { |
| args.fFragBuilder->codeAppendf("case %d: %s = ", i, args.fOutputColor); |
| args.fFragBuilder->appendTextureLookupAndModulate(args.fOutputColor, |
| args.fTexSamplers[i], |
| "texCoord", |
| kFloat2_GrSLType, |
| &fColorSpaceXformHelper); |
| args.fFragBuilder->codeAppend("; break;"); |
| } |
| args.fFragBuilder->codeAppend("}"); |
| } else { |
| args.fFragBuilder->codeAppendf("%s = ", args.fOutputColor); |
| args.fFragBuilder->appendTextureLookupAndModulate(args.fOutputColor, |
| args.fTexSamplers[0], |
| "texCoord", |
| kFloat2_GrSLType, |
| &fColorSpaceXformHelper); |
| } |
| args.fFragBuilder->codeAppend(";"); |
| if (textureGP.usesCoverageEdgeAA()) { |
| const char* aaDistName = nullptr; |
| // When interpolation is innacurate we perform the evaluation of the edge |
| // equations in the fragment shader rather than interpolating values computed |
| // in the vertex shader. |
| if (!args.fShaderCaps->interpolantsAreInaccurate()) { |
| GrGLSLVarying aaDistVarying(kFloat4_GrSLType, |
| GrGLSLVarying::Scope::kVertToFrag); |
| args.fVaryingHandler->addVarying("aaDists", &aaDistVarying); |
| args.fVertBuilder->codeAppendf( |
| R"(%s = float4(dot(aaEdge0.xy, %s.xy) + aaEdge0.z, |
| dot(aaEdge1.xy, %s.xy) + aaEdge1.z, |
| dot(aaEdge2.xy, %s.xy) + aaEdge2.z, |
| dot(aaEdge3.xy, %s.xy) + aaEdge3.z);)", |
| aaDistVarying.vsOut(), textureGP.fPositions.fName, |
| textureGP.fPositions.fName, textureGP.fPositions.fName, |
| textureGP.fPositions.fName); |
| aaDistName = aaDistVarying.fsIn(); |
| } else { |
| GrGLSLVarying aaEdgeVarying[4]{ |
| {kFloat3_GrSLType, GrGLSLVarying::Scope::kVertToFrag}, |
| {kFloat3_GrSLType, GrGLSLVarying::Scope::kVertToFrag}, |
| {kFloat3_GrSLType, GrGLSLVarying::Scope::kVertToFrag}, |
| {kFloat3_GrSLType, GrGLSLVarying::Scope::kVertToFrag} |
| }; |
| for (int i = 0; i < 4; ++i) { |
| SkString name; |
| name.printf("aaEdge%d", i); |
| args.fVaryingHandler->addVarying(name.c_str(), &aaEdgeVarying[i]); |
| args.fVertBuilder->codeAppendf( |
| "%s = aaEdge%d;", aaEdgeVarying[i].vsOut(), i); |
| } |
| args.fFragBuilder->codeAppendf( |
| R"(float4 aaDists = float4(dot(%s.xy, sk_FragCoord.xy) + %s.z, |
| dot(%s.xy, sk_FragCoord.xy) + %s.z, |
| dot(%s.xy, sk_FragCoord.xy) + %s.z, |
| dot(%s.xy, sk_FragCoord.xy) + %s.z);)", |
| aaEdgeVarying[0].fsIn(), aaEdgeVarying[0].fsIn(), |
| aaEdgeVarying[1].fsIn(), aaEdgeVarying[1].fsIn(), |
| aaEdgeVarying[2].fsIn(), aaEdgeVarying[2].fsIn(), |
| aaEdgeVarying[3].fsIn(), aaEdgeVarying[3].fsIn()); |
| aaDistName = "aaDists"; |
| } |
| args.fFragBuilder->codeAppendf( |
| "float mindist = min(min(%s.x, %s.y), min(%s.z, %s.w));", |
| aaDistName, aaDistName, aaDistName, aaDistName); |
| args.fFragBuilder->codeAppendf("%s = float4(clamp(mindist, 0, 1));", |
| args.fOutputCoverage); |
| } else { |
| args.fFragBuilder->codeAppendf("%s = float4(1);", args.fOutputCoverage); |
| } |
| } |
| GrGLSLColorSpaceXformHelper fColorSpaceXformHelper; |
| }; |
| return new GLSLProcessor; |
| } |
| |
| bool usesCoverageEdgeAA() const { return SkToBool(fAAEdges[0].isInitialized()); } |
| |
| private: |
| // This exists to reduce the number of shaders generated. It does some rounding of sampler |
| // counts. |
| static int NumSamplersToUse(int numRealProxies, const GrShaderCaps& caps) { |
| SkASSERT(numRealProxies > 0 && numRealProxies <= kMaxTextures && |
| numRealProxies <= caps.maxFragmentSamplers()); |
| if (1 == numRealProxies) { |
| return 1; |
| } |
| if (numRealProxies <= 4) { |
| return 4; |
| } |
| // Round to the next power of 2 and then clamp to kMaxTextures and the max allowed by caps. |
| return SkTMin(SkNextPow2(numRealProxies), SkTMin(kMaxTextures, caps.maxFragmentSamplers())); |
| } |
| |
| TextureGeometryProcessor(sk_sp<GrTextureProxy> proxies[], int proxyCnt, int samplerCnt, |
| sk_sp<GrColorSpaceXform> csxf, bool coverageAA, |
| const GrSamplerState::Filter filters[], const GrShaderCaps& caps) |
| : INHERITED(kTextureGeometryProcessor_ClassID), fColorSpaceXform(std::move(csxf)) { |
| SkASSERT(proxyCnt > 0 && samplerCnt >= proxyCnt); |
| fPositions = this->addVertexAttrib("position", kFloat2_GrVertexAttribType); |
| fSamplers[0].reset(std::move(proxies[0]), filters[0]); |
| this->addTextureSampler(&fSamplers[0]); |
| for (int i = 1; i < proxyCnt; ++i) { |
| // This class has one sampler built in, the rest come from memory this processor was |
| // placement-newed into and so haven't been constructed. |
| new (&fSamplers[i]) TextureSampler(std::move(proxies[i]), filters[i]); |
| this->addTextureSampler(&fSamplers[i]); |
| } |
| if (samplerCnt > 1) { |
| // Here we initialize any extra samplers by repeating the last one samplerCnt - proxyCnt |
| // times. |
| GrTextureProxy* dupeProxy = fSamplers[proxyCnt - 1].proxy(); |
| for (int i = proxyCnt; i < samplerCnt; ++i) { |
| new (&fSamplers[i]) TextureSampler(sk_ref_sp(dupeProxy), filters[proxyCnt - 1]); |
| this->addTextureSampler(&fSamplers[i]); |
| } |
| SkASSERT(caps.integerSupport()); |
| fTextureIdx = this->addVertexAttrib("textureIdx", kInt_GrVertexAttribType); |
| } |
| |
| fTextureCoords = this->addVertexAttrib("textureCoords", kFloat2_GrVertexAttribType); |
| if (coverageAA) { |
| fAAEdges[0] = this->addVertexAttrib("aaEdge0", kFloat3_GrVertexAttribType); |
| fAAEdges[1] = this->addVertexAttrib("aaEdge1", kFloat3_GrVertexAttribType); |
| fAAEdges[2] = this->addVertexAttrib("aaEdge2", kFloat3_GrVertexAttribType); |
| fAAEdges[3] = this->addVertexAttrib("aaEdge3", kFloat3_GrVertexAttribType); |
| } |
| fColors = this->addVertexAttrib("color", kUByte4_norm_GrVertexAttribType); |
| } |
| |
| Attribute fPositions; |
| Attribute fTextureIdx; |
| Attribute fTextureCoords; |
| Attribute fColors; |
| Attribute fAAEdges[4]; |
| sk_sp<GrColorSpaceXform> fColorSpaceXform; |
| TextureSampler fSamplers[1]; |
| |
| typedef GrGeometryProcessor INHERITED; |
| }; |
| |
| namespace { |
| // This is a class soley so it can be partially specialized (functions cannot be). |
| template<GrAA, typename Vertex> class VertexAAHandler; |
| |
| template<typename Vertex> class VertexAAHandler<GrAA::kNo, Vertex> { |
| public: |
| static void AssignPositionsAndTexCoords(Vertex* vertices, const GrQuad& quad, |
| const SkRect& texRect) { |
| vertices[0].fPosition = quad.point(0); |
| vertices[0].fTextureCoords = {texRect.fLeft, texRect.fTop}; |
| vertices[1].fPosition = quad.point(1); |
| vertices[1].fTextureCoords = {texRect.fLeft, texRect.fBottom}; |
| vertices[2].fPosition = quad.point(2); |
| vertices[2].fTextureCoords = {texRect.fRight, texRect.fTop}; |
| vertices[3].fPosition = quad.point(3); |
| vertices[3].fTextureCoords = {texRect.fRight, texRect.fBottom}; |
| } |
| }; |
| |
| template<typename Vertex> class VertexAAHandler<GrAA::kYes, Vertex> { |
| public: |
| static void AssignPositionsAndTexCoords(Vertex* vertices, const GrQuad& quad, |
| const SkRect& texRect) { |
| // We compute the four edge equations for quad, then outset them and compute a new quad |
| // as the intersection points of the outset edges. |
| |
| // GrQuad is in tristip order but we want the points to be in a fan order, so swap 2 and 3. |
| Sk4f xs(quad.point(0).fX, quad.point(1).fX, quad.point(3).fX, quad.point(2).fX); |
| Sk4f ys(quad.point(0).fY, quad.point(1).fY, quad.point(3).fY, quad.point(2).fY); |
| Sk4f xsrot = SkNx_shuffle<1, 2, 3, 0>(xs); |
| Sk4f ysrot = SkNx_shuffle<1, 2, 3, 0>(ys); |
| Sk4f normXs = ysrot - ys; |
| Sk4f normYs = xs - xsrot; |
| Sk4f ds = xsrot * ys - ysrot * xs; |
| Sk4f invNormLengths = (normXs * normXs + normYs * normYs).rsqrt(); |
| float test = normXs[0] * xs[2] + normYs[0] * ys[2] + ds[0]; |
| // Make sure the edge equations have their normals facing into the quad in device space |
| if (test < 0) { |
| invNormLengths = -invNormLengths; |
| } |
| normXs *= invNormLengths; |
| normYs *= invNormLengths; |
| ds *= invNormLengths; |
| |
| // Here is the bloat. This makes our edge equations compute coverage without requiring a |
| // half pixel offset and is also used to compute the bloated quad that will cover all |
| // pixels. |
| ds += Sk4f(0.5f); |
| |
| for (int i = 0; i < 4; ++i) { |
| for (int j = 0; j < 4; ++j) { |
| vertices[j].fEdges[i].fX = normXs[i]; |
| vertices[j].fEdges[i].fY = normYs[i]; |
| vertices[j].fEdges[i].fZ = ds[i]; |
| } |
| } |
| |
| // Reverse the process to compute the points of the bloated quad from the edge equations. |
| // This time the inputs don't have 1s as their third coord and we want to homogenize rather |
| // than normalize the output since we need a GrQuad with 2D points. |
| xsrot = SkNx_shuffle<3, 0, 1, 2>(normXs); |
| ysrot = SkNx_shuffle<3, 0, 1, 2>(normYs); |
| Sk4f dsrot = SkNx_shuffle<3, 0, 1, 2>(ds); |
| xs = ysrot * ds - normYs * dsrot; |
| ys = normXs * dsrot - xsrot * ds; |
| ds = xsrot * normYs - ysrot * normXs; |
| ds = ds.invert(); |
| xs *= ds; |
| ys *= ds; |
| |
| // Go back to tri strip order when writing out the bloated quad to vertex positions. |
| vertices[0].fPosition = {xs[0], ys[0]}; |
| vertices[1].fPosition = {xs[1], ys[1]}; |
| vertices[3].fPosition = {xs[2], ys[2]}; |
| vertices[2].fPosition = {xs[3], ys[3]}; |
| |
| AssignTexCoords(vertices, quad, texRect); |
| } |
| |
| private: |
| static void AssignTexCoords(Vertex* vertices, const GrQuad& quad, const SkRect& tex) { |
| SkMatrix q = SkMatrix::MakeAll(quad.point(0).fX, quad.point(1).fX, quad.point(2).fX, |
| quad.point(0).fY, quad.point(1).fY, quad.point(2).fY, |
| 1.f, 1.f, 1.f); |
| SkMatrix qinv; |
| if (!q.invert(&qinv)) { |
| return; |
| } |
| SkMatrix t = SkMatrix::MakeAll(tex.fLeft, tex.fLeft, tex.fRight, |
| tex.fTop, tex.fBottom, tex.fTop, |
| 1.f, 1.f, 1.f); |
| SkMatrix map; |
| map.setConcat(t, qinv); |
| SkMatrixPriv::MapPointsWithStride(map, &vertices[0].fTextureCoords, sizeof(Vertex), |
| &vertices[0].fPosition, sizeof(Vertex), 4); |
| } |
| }; |
| |
| template <typename Vertex, bool IsMultiTex> struct TexIdAssigner; |
| |
| template <typename Vertex> struct TexIdAssigner<Vertex, true> { |
| static void Assign(Vertex* vertices, int textureIdx) { |
| vertices[0].fTextureIdx = textureIdx; |
| vertices[1].fTextureIdx = textureIdx; |
| vertices[2].fTextureIdx = textureIdx; |
| vertices[3].fTextureIdx = textureIdx; |
| } |
| }; |
| |
| template <typename Vertex> struct TexIdAssigner<Vertex, false> { |
| static void Assign(Vertex* vertices, int textureIdx) {} |
| }; |
| } // anonymous namespace |
| |
| template <typename Vertex, bool IsMultiTex, GrAA AA> |
| static void tessellate_quad(const GrQuad& devQuad, const SkRect& srcRect, GrColor color, |
| GrSurfaceOrigin origin, Vertex* vertices, SkScalar iw, SkScalar ih, |
| int textureIdx) { |
| SkRect texRect = { |
| iw * srcRect.fLeft, |
| ih * srcRect.fTop, |
| iw * srcRect.fRight, |
| ih * srcRect.fBottom |
| }; |
| if (origin == kBottomLeft_GrSurfaceOrigin) { |
| texRect.fTop = 1.f - texRect.fTop; |
| texRect.fBottom = 1.f - texRect.fBottom; |
| } |
| VertexAAHandler<AA, Vertex>::AssignPositionsAndTexCoords(vertices, devQuad, texRect); |
| vertices[0].fColor = color; |
| vertices[1].fColor = color; |
| vertices[2].fColor = color; |
| vertices[3].fColor = color; |
| TexIdAssigner<Vertex, IsMultiTex>::Assign(vertices, textureIdx); |
| } |
| /** |
| * 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, |
| GrSamplerState::Filter filter, GrColor color, |
| const SkRect& srcRect, const SkRect& dstRect, |
| GrAAType aaType, const SkMatrix& viewMatrix, |
| sk_sp<GrColorSpaceXform> csxf, bool allowSRBInputs) { |
| return std::unique_ptr<GrDrawOp>(new TextureOp(std::move(proxy), filter, color, srcRect, |
| dstRect, aaType, viewMatrix, std::move(csxf), |
| allowSRBInputs)); |
| } |
| |
| ~TextureOp() override { |
| if (fFinalized) { |
| auto proxies = this->proxies(); |
| for (int i = 0; i < fProxyCnt; ++i) { |
| proxies[i]->completedRead(); |
| } |
| if (fProxyCnt > 1) { |
| delete[] reinterpret_cast<const char*>(proxies); |
| } |
| } else { |
| SkASSERT(1 == fProxyCnt); |
| fProxy0->unref(); |
| } |
| } |
| |
| const char* name() const override { return "TextureOp"; } |
| |
| void visitProxies(const VisitProxyFunc& func) const override { |
| auto proxies = this->proxies(); |
| for (int i = 0; i < fProxyCnt; ++i) { |
| func(proxies[i]); |
| } |
| } |
| |
| SkString dumpInfo() const override { |
| SkString str; |
| str.appendf("AllowSRGBInputs: %d\n", fAllowSRGBInputs); |
| str.appendf("# draws: %d\n", fDraws.count()); |
| auto proxies = this->proxies(); |
| for (int i = 0; i < fProxyCnt; ++i) { |
| str.appendf("Proxy ID %d: %d, Filter: %d\n", i, proxies[i]->uniqueID().asUInt(), |
| static_cast<int>(this->filters()[i])); |
| } |
| for (int i = 0; i < fDraws.count(); ++i) { |
| const Draw& draw = fDraws[i]; |
| str.appendf( |
| "%d: Color: 0x%08x, ProxyIdx: %d, TexRect [L: %.2f, T: %.2f, R: %.2f, B: %.2f] " |
| "Quad [(%.2f, %.2f), (%.2f, %.2f), (%.2f, %.2f), (%.2f, %.2f)]\n", |
| i, draw.fColor, draw.fTextureIdx, 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, |
| GrPixelConfigIsClamped dstIsClamped) override { |
| SkASSERT(!fFinalized); |
| SkASSERT(1 == fProxyCnt); |
| fFinalized = true; |
| fProxy0->addPendingRead(); |
| fProxy0->unref(); |
| return RequiresDstTexture::kNo; |
| } |
| |
| FixedFunctionFlags fixedFunctionFlags() const override { |
| return this->aaType() == GrAAType::kMSAA ? FixedFunctionFlags::kUsesHWAA |
| : FixedFunctionFlags::kNone; |
| } |
| |
| DEFINE_OP_CLASS_ID |
| |
| private: |
| |
| // This is used in a heursitic for choosing a code path. We don't care what happens with |
| // really large rects, infs, nans, etc. |
| #if defined(__clang__) && (__clang_major__ * 1000 + __clang_minor__) >= 3007 |
| __attribute__((no_sanitize("float-cast-overflow"))) |
| #endif |
| size_t RectSizeAsSizeT(const SkRect& rect) {; |
| return static_cast<size_t>(SkTMax(rect.width(), 1.f) * SkTMax(rect.height(), 1.f)); |
| } |
| |
| static constexpr int kMaxTextures = TextureGeometryProcessor::kMaxTextures; |
| |
| TextureOp(sk_sp<GrTextureProxy> proxy, GrSamplerState::Filter filter, GrColor color, |
| const SkRect& srcRect, const SkRect& dstRect, GrAAType aaType, |
| const SkMatrix& viewMatrix, sk_sp<GrColorSpaceXform> csxf, bool allowSRGBInputs) |
| : INHERITED(ClassID()) |
| , fColorSpaceXform(std::move(csxf)) |
| , fProxy0(proxy.release()) |
| , fFilter0(filter) |
| , fProxyCnt(1) |
| , fAAType(static_cast<unsigned>(aaType)) |
| , fFinalized(0) |
| , fAllowSRGBInputs(allowSRGBInputs ? 1 : 0) { |
| SkASSERT(aaType != GrAAType::kMixedSamples); |
| Draw& draw = fDraws.push_back(); |
| draw.fSrcRect = srcRect; |
| draw.fTextureIdx = 0; |
| draw.fColor = color; |
| draw.fQuad.setFromMappedRect(dstRect, viewMatrix); |
| SkRect bounds; |
| bounds.setBounds(draw.fQuad.points(), 4); |
| this->setBounds(bounds, HasAABloat::kNo, IsZeroArea::kNo); |
| |
| fMaxApproxDstPixelArea = RectSizeAsSizeT(bounds); |
| } |
| |
| void onPrepareDraws(Target* target) override { |
| sk_sp<GrTextureProxy> proxiesSPs[kMaxTextures]; |
| auto proxies = this->proxies(); |
| auto filters = this->filters(); |
| for (int i = 0; i < fProxyCnt; ++i) { |
| if (!proxies[i]->instantiate(target->resourceProvider())) { |
| return; |
| } |
| proxiesSPs[i] = sk_ref_sp(proxies[i]); |
| } |
| |
| bool coverageAA = GrAAType::kCoverage == this->aaType(); |
| sk_sp<GrGeometryProcessor> gp = |
| TextureGeometryProcessor::Make(proxiesSPs, fProxyCnt, std::move(fColorSpaceXform), |
| coverageAA, filters, *target->caps().shaderCaps()); |
| GrPipeline::InitArgs args; |
| args.fProxy = target->proxy(); |
| args.fCaps = &target->caps(); |
| args.fResourceProvider = target->resourceProvider(); |
| args.fFlags = 0; |
| if (fAllowSRGBInputs) { |
| args.fFlags |= GrPipeline::kAllowSRGBInputs_Flag; |
| } |
| if (GrAAType::kMSAA == this->aaType()) { |
| args.fFlags |= GrPipeline::kHWAntialias_Flag; |
| } |
| |
| const GrPipeline* pipeline = target->allocPipeline(args, GrProcessorSet::MakeEmptySet(), |
| target->detachAppliedClip()); |
| int vstart; |
| const GrBuffer* vbuffer; |
| void* vdata = target->makeVertexSpace(gp->getVertexStride(), 4 * fDraws.count(), &vbuffer, |
| &vstart); |
| if (!vdata) { |
| SkDebugf("Could not allocate vertices\n"); |
| return; |
| } |
| if (1 == fProxyCnt) { |
| GrSurfaceOrigin origin = proxies[0]->origin(); |
| GrTexture* texture = proxies[0]->priv().peekTexture(); |
| float iw = 1.f / texture->width(); |
| float ih = 1.f / texture->height(); |
| if (coverageAA) { |
| SkASSERT(gp->getVertexStride() == sizeof(TextureGeometryProcessor::AAVertex)); |
| auto vertices = static_cast<TextureGeometryProcessor::AAVertex*>(vdata); |
| for (int i = 0; i < fDraws.count(); ++i) { |
| tessellate_quad<TextureGeometryProcessor::AAVertex, false, GrAA::kYes>( |
| fDraws[i].fQuad, fDraws[i].fSrcRect, fDraws[i].fColor, origin, |
| vertices + 4 * i, iw, ih, 0); |
| } |
| } else { |
| SkASSERT(gp->getVertexStride() == sizeof(TextureGeometryProcessor::Vertex)); |
| auto vertices = static_cast<TextureGeometryProcessor::Vertex*>(vdata); |
| for (int i = 0; i < fDraws.count(); ++i) { |
| tessellate_quad<TextureGeometryProcessor::Vertex, false, GrAA::kNo>( |
| fDraws[i].fQuad, fDraws[i].fSrcRect, fDraws[i].fColor, origin, |
| vertices + 4 * i, iw, ih, 0); |
| } |
| } |
| } else { |
| GrTexture* textures[kMaxTextures]; |
| float iw[kMaxTextures]; |
| float ih[kMaxTextures]; |
| for (int t = 0; t < fProxyCnt; ++t) { |
| textures[t] = proxies[t]->priv().peekTexture(); |
| iw[t] = 1.f / textures[t]->width(); |
| ih[t] = 1.f / textures[t]->height(); |
| } |
| if (coverageAA) { |
| SkASSERT(gp->getVertexStride() == |
| sizeof(TextureGeometryProcessor::AAMultiTextureVertex)); |
| auto vertices = static_cast<TextureGeometryProcessor::AAMultiTextureVertex*>(vdata); |
| for (int i = 0; i < fDraws.count(); ++i) { |
| auto tidx = fDraws[i].fTextureIdx; |
| GrSurfaceOrigin origin = proxies[tidx]->origin(); |
| tessellate_quad<TextureGeometryProcessor::AAMultiTextureVertex, true, |
| GrAA::kYes>(fDraws[i].fQuad, fDraws[i].fSrcRect, |
| fDraws[i].fColor, origin, vertices + 4 * i, |
| iw[tidx], ih[tidx], tidx); |
| } |
| } else { |
| SkASSERT(gp->getVertexStride() == |
| sizeof(TextureGeometryProcessor::MultiTextureVertex)); |
| auto vertices = static_cast<TextureGeometryProcessor::MultiTextureVertex*>(vdata); |
| for (int i = 0; i < fDraws.count(); ++i) { |
| auto tidx = fDraws[i].fTextureIdx; |
| GrSurfaceOrigin origin = proxies[tidx]->origin(); |
| tessellate_quad<TextureGeometryProcessor::MultiTextureVertex, true, GrAA::kNo>( |
| fDraws[i].fQuad, fDraws[i].fSrcRect, fDraws[i].fColor, origin, |
| vertices + 4 * i, iw[tidx], ih[tidx], tidx); |
| } |
| } |
| } |
| GrPrimitiveType primitiveType = |
| fDraws.count() > 1 ? GrPrimitiveType::kTriangles : GrPrimitiveType::kTriangleStrip; |
| GrMesh mesh(primitiveType); |
| if (fDraws.count() > 1) { |
| sk_sp<const GrBuffer> ibuffer = target->resourceProvider()->refQuadIndexBuffer(); |
| if (!ibuffer) { |
| SkDebugf("Could not allocate quad indices\n"); |
| return; |
| } |
| mesh.setIndexedPatterned(ibuffer.get(), 6, 4, fDraws.count(), |
| GrResourceProvider::QuadCountOfQuadBuffer()); |
| } else { |
| 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>(); |
| const auto& shaderCaps = *caps.shaderCaps(); |
| if (!GrColorSpaceXform::Equals(fColorSpaceXform.get(), that->fColorSpaceXform.get())) { |
| return false; |
| } |
| if (this->aaType() != that->aaType()) { |
| return false; |
| } |
| // Because of an issue where GrColorSpaceXform adds the same function every time it is used |
| // in a texture lookup, we only allow multiple textures when there is no transform. |
| if (TextureGeometryProcessor::SupportsMultitexture(shaderCaps) && !fColorSpaceXform && |
| fMaxApproxDstPixelArea <= shaderCaps.disableImageMultitexturingDstRectAreaThreshold() && |
| that->fMaxApproxDstPixelArea <= |
| shaderCaps.disableImageMultitexturingDstRectAreaThreshold()) { |
| int map[kMaxTextures]; |
| int numNewProxies = this->mergeProxies(that, map, shaderCaps); |
| if (numNewProxies < 0) { |
| return false; |
| } |
| if (1 == fProxyCnt && numNewProxies) { |
| void* mem = new char[(sizeof(GrSamplerState::Filter) + sizeof(GrTextureProxy*)) * |
| kMaxTextures]; |
| auto proxies = reinterpret_cast<GrTextureProxy**>(mem); |
| auto filters = reinterpret_cast<GrSamplerState::Filter*>(proxies + kMaxTextures); |
| proxies[0] = fProxy0; |
| filters[0] = fFilter0; |
| fProxyArray = proxies; |
| } |
| fProxyCnt += numNewProxies; |
| auto thisProxies = fProxyArray; |
| auto thatProxies = that->proxies(); |
| auto thatFilters = that->filters(); |
| auto thisFilters = reinterpret_cast<GrSamplerState::Filter*>(thisProxies + |
| kMaxTextures); |
| for (int i = 0; i < that->fProxyCnt; ++i) { |
| if (map[i] < 0) { |
| thatProxies[i]->addPendingRead(); |
| |
| thisProxies[-map[i]] = thatProxies[i]; |
| thisFilters[-map[i]] = thatFilters[i]; |
| map[i] = -map[i]; |
| } |
| } |
| int firstNewDraw = fDraws.count(); |
| fDraws.push_back_n(that->fDraws.count(), that->fDraws.begin()); |
| for (int i = firstNewDraw; i < fDraws.count(); ++i) { |
| fDraws[i].fTextureIdx = map[fDraws[i].fTextureIdx]; |
| } |
| } else { |
| // We can get here when one of the ops is already multitextured but the other cannot |
| // be because of the dst rect size. |
| if (fProxyCnt > 1 || that->fProxyCnt > 1) { |
| return false; |
| } |
| if (fProxy0->uniqueID() != that->fProxy0->uniqueID() || fFilter0 != that->fFilter0) { |
| return false; |
| } |
| fDraws.push_back_n(that->fDraws.count(), that->fDraws.begin()); |
| } |
| this->joinBounds(*that); |
| fMaxApproxDstPixelArea = SkTMax(that->fMaxApproxDstPixelArea, fMaxApproxDstPixelArea); |
| return true; |
| } |
| |
| /** |
| * Determines a mapping of indices from that's proxy array to this's proxy array. A negative map |
| * value means that's proxy should be added to this's proxy array at the absolute value of |
| * the map entry. If it is determined that the ops shouldn't combine their proxies then a |
| * negative value is returned. Otherwise, return value indicates the number of proxies that have |
| * to be added to this op or, equivalently, the number of negative entries in map. |
| */ |
| int mergeProxies(const TextureOp* that, int map[kMaxTextures], const GrShaderCaps& caps) const { |
| std::fill_n(map, kMaxTextures, -kMaxTextures); |
| int sharedProxyCnt = 0; |
| auto thisProxies = this->proxies(); |
| auto thisFilters = this->filters(); |
| auto thatProxies = that->proxies(); |
| auto thatFilters = that->filters(); |
| for (int i = 0; i < fProxyCnt; ++i) { |
| for (int j = 0; j < that->fProxyCnt; ++j) { |
| if (thisProxies[i]->uniqueID() == thatProxies[j]->uniqueID()) { |
| if (thisFilters[i] != thatFilters[j]) { |
| // In GL we don't currently support using the same texture with different |
| // samplers. If we added support for sampler objects and a cap bit to know |
| // it's ok to use different filter modes then we could support this. |
| // Otherwise, we could also only allow a single filter mode for each op |
| // instance. |
| return -1; |
| } |
| map[j] = i; |
| ++sharedProxyCnt; |
| break; |
| } |
| } |
| } |
| int actualMaxTextures = SkTMin(caps.maxFragmentSamplers(), kMaxTextures); |
| int newProxyCnt = that->fProxyCnt - sharedProxyCnt; |
| if (newProxyCnt + fProxyCnt > actualMaxTextures) { |
| return -1; |
| } |
| GrPixelConfig config = thisProxies[0]->config(); |
| int nextSlot = fProxyCnt; |
| for (int j = 0; j < that->fProxyCnt; ++j) { |
| // We want to avoid making many shaders because of different permutations of shader |
| // based swizzle and sampler types. The approach taken here is to require the configs to |
| // be the same and to only allow already instantiated proxies that have the most |
| // common sampler type. Otherwise we don't merge. |
| if (thatProxies[j]->config() != config) { |
| return -1; |
| } |
| if (GrTexture* tex = thatProxies[j]->priv().peekTexture()) { |
| if (tex->texturePriv().samplerType() != kTexture2DSampler_GrSLType) { |
| return -1; |
| } |
| } |
| if (map[j] < 0) { |
| map[j] = -(nextSlot++); |
| } |
| } |
| return newProxyCnt; |
| } |
| |
| GrAAType aaType() const { return static_cast<GrAAType>(fAAType); } |
| |
| GrTextureProxy* const* proxies() const { return fProxyCnt > 1 ? fProxyArray : &fProxy0; } |
| |
| const GrSamplerState::Filter* filters() const { |
| if (fProxyCnt > 1) { |
| return reinterpret_cast<const GrSamplerState::Filter*>(fProxyArray + kMaxTextures); |
| } |
| return &fFilter0; |
| } |
| |
| struct Draw { |
| SkRect fSrcRect; |
| int fTextureIdx; |
| GrQuad fQuad; |
| GrColor fColor; |
| }; |
| SkSTArray<1, Draw, true> fDraws; |
| sk_sp<GrColorSpaceXform> fColorSpaceXform; |
| // Initially we store a single proxy ptr and a single filter. If we grow to have more than |
| // one proxy we instead store pointers to dynamically allocated arrays of size kMaxTextures |
| // followed by kMaxTextures filters. |
| union { |
| GrTextureProxy* fProxy0; |
| GrTextureProxy** fProxyArray; |
| }; |
| size_t fMaxApproxDstPixelArea; |
| GrSamplerState::Filter fFilter0; |
| uint8_t fProxyCnt; |
| unsigned fAAType : 2; |
| // Used to track whether fProxy is ref'ed or has a pending IO after finalize() is called. |
| unsigned fFinalized : 1; |
| unsigned fAllowSRGBInputs : 1; |
| |
| typedef GrMeshDrawOp INHERITED; |
| }; |
| |
| constexpr int TextureGeometryProcessor::kMaxTextures; |
| constexpr int TextureOp::kMaxTextures; |
| |
| } // anonymous namespace |
| |
| namespace GrTextureOp { |
| |
| std::unique_ptr<GrDrawOp> Make(sk_sp<GrTextureProxy> proxy, GrSamplerState::Filter filter, |
| GrColor color, const SkRect& srcRect, const SkRect& dstRect, |
| GrAAType aaType, const SkMatrix& viewMatrix, |
| sk_sp<GrColorSpaceXform> csxf, bool allowSRGBInputs) { |
| SkASSERT(!viewMatrix.hasPerspective()); |
| return TextureOp::Make(std::move(proxy), filter, color, srcRect, dstRect, aaType, viewMatrix, |
| std::move(csxf), allowSRGBInputs); |
| } |
| |
| } // namespace GrTextureOp |
| |
| #if GR_TEST_UTILS |
| #include "GrContext.h" |
| #include "GrContextPriv.h" |
| #include "GrProxyProvider.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; |
| |
| GrProxyProvider* proxyProvider = context->contextPriv().proxyProvider(); |
| sk_sp<GrTextureProxy> proxy = proxyProvider->createProxy(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()); |
| GrSamplerState::Filter filter = (GrSamplerState::Filter)random->nextULessThan( |
| static_cast<uint32_t>(GrSamplerState::Filter::kMipMap) + 1); |
| auto csxf = GrTest::TestColorXform(random); |
| bool allowSRGBInputs = random->nextBool(); |
| GrAAType aaType = GrAAType::kNone; |
| if (random->nextBool()) { |
| aaType = (fsaaType == GrFSAAType::kUnifiedMSAA) ? GrAAType::kMSAA : GrAAType::kCoverage; |
| } |
| return GrTextureOp::Make(std::move(proxy), filter, color, srcRect, rect, aaType, viewMatrix, |
| std::move(csxf), allowSRGBInputs); |
| } |
| |
| #endif |
