| /* |
| * 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 "GrContext.h" |
| #include "GrContextPriv.h" |
| #include "GrDrawOpTest.h" |
| #include "GrGeometryProcessor.h" |
| #include "GrMemoryPool.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 "SkMatrixPriv.h" |
| #include "SkPoint.h" |
| #include "SkPoint3.h" |
| #include "SkTo.h" |
| #include "glsl/GrGLSLColorSpaceXformHelper.h" |
| #include "glsl/GrGLSLFragmentShaderBuilder.h" |
| #include "glsl/GrGLSLGeometryProcessor.h" |
| #include "glsl/GrGLSLVarying.h" |
| #include "glsl/GrGLSLVertexGeoBuilder.h" |
| #include <new> |
| |
| namespace { |
| |
| enum class Domain : bool { kNo = false, kYes = true }; |
| |
| /** |
| * 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: |
| template <typename Pos> struct VertexCommon { |
| using Position = Pos; |
| Position fPosition; |
| GrColor fColor; |
| SkPoint fTextureCoords; |
| }; |
| |
| template <typename Pos, Domain D> struct OptionalDomainVertex; |
| template <typename Pos> |
| struct OptionalDomainVertex<Pos, Domain::kNo> : VertexCommon<Pos> { |
| static constexpr Domain kDomain = Domain::kNo; |
| }; |
| template <typename Pos> |
| struct OptionalDomainVertex<Pos, Domain::kYes> : VertexCommon<Pos> { |
| static constexpr Domain kDomain = Domain::kYes; |
| SkRect fTextureDomain; |
| }; |
| |
| template <typename Pos, Domain D, GrAA> struct OptionalAAVertex; |
| template <typename Pos, Domain D> |
| struct OptionalAAVertex<Pos, D, GrAA::kNo> : OptionalDomainVertex<Pos, D> { |
| static constexpr GrAA kAA = GrAA::kNo; |
| }; |
| template <typename Pos, Domain D> |
| struct OptionalAAVertex<Pos, D, GrAA::kYes> : OptionalDomainVertex<Pos, D> { |
| static constexpr GrAA kAA = GrAA::kYes; |
| SkPoint3 fEdges[4]; |
| }; |
| |
| template <typename Pos, Domain D, GrAA AA> |
| using Vertex = OptionalAAVertex<Pos, D, AA>; |
| |
| static sk_sp<GrGeometryProcessor> Make(GrTextureType textureType, GrPixelConfig textureConfig, |
| const GrSamplerState::Filter filter, |
| sk_sp<GrColorSpaceXform> textureColorSpaceXform, |
| sk_sp<GrColorSpaceXform> paintColorSpaceXform, |
| bool coverageAA, bool perspective, Domain domain, |
| const GrShaderCaps& caps) { |
| return sk_sp<TextureGeometryProcessor>(new TextureGeometryProcessor( |
| textureType, textureConfig, filter, std::move(textureColorSpaceXform), |
| std::move(paintColorSpaceXform), coverageAA, perspective, domain, caps)); |
| } |
| |
| const char* name() const override { return "TextureGeometryProcessor"; } |
| |
| void getGLSLProcessorKey(const GrShaderCaps&, GrProcessorKeyBuilder* b) const override { |
| b->add32(GrColorSpaceXform::XformKey(fTextureColorSpaceXform.get())); |
| b->add32(GrColorSpaceXform::XformKey(fPaintColorSpaceXform.get())); |
| uint32_t x = this->usesCoverageEdgeAA() ? 0 : 1; |
| x |= kFloat3_GrVertexAttribType == fPositions.type() ? 0 : 2; |
| x |= fDomain.isInitialized() ? 4 : 0; |
| b->add32(x); |
| } |
| |
| 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); |
| fTextureColorSpaceXformHelper.setData( |
| pdman, textureGP.fTextureColorSpaceXform.get()); |
| fPaintColorSpaceXformHelper.setData(pdman, textureGP.fPaintColorSpaceXform.get()); |
| } |
| |
| private: |
| void onEmitCode(EmitArgs& args, GrGPArgs* gpArgs) override { |
| using Interpolation = GrGLSLVaryingHandler::Interpolation; |
| const auto& textureGP = args.fGP.cast<TextureGeometryProcessor>(); |
| fTextureColorSpaceXformHelper.emitCode( |
| args.fUniformHandler, textureGP.fTextureColorSpaceXform.get()); |
| fPaintColorSpaceXformHelper.emitCode( |
| args.fUniformHandler, textureGP.fPaintColorSpaceXform.get(), |
| kVertex_GrShaderFlag); |
| if (kFloat2_GrVertexAttribType == textureGP.fPositions.type()) { |
| args.fVaryingHandler->setNoPerspective(); |
| } |
| args.fVaryingHandler->emitAttributes(textureGP); |
| gpArgs->fPositionVar = textureGP.fPositions.asShaderVar(); |
| |
| this->emitTransforms(args.fVertBuilder, |
| args.fVaryingHandler, |
| args.fUniformHandler, |
| textureGP.fTextureCoords.asShaderVar(), |
| args.fFPCoordTransformHandler); |
| if (fPaintColorSpaceXformHelper.isNoop()) { |
| args.fVaryingHandler->addPassThroughAttribute( |
| textureGP.fColors, args.fOutputColor, Interpolation::kCanBeFlat); |
| } else { |
| GrGLSLVarying varying(kHalf4_GrSLType); |
| args.fVaryingHandler->addVarying("color", &varying); |
| args.fVertBuilder->codeAppend("half4 color = "); |
| args.fVertBuilder->appendColorGamutXform(textureGP.fColors.name(), |
| &fPaintColorSpaceXformHelper); |
| args.fVertBuilder->codeAppend(";"); |
| args.fVertBuilder->codeAppendf("%s = half4(color.rgb * color.a, color.a);", |
| varying.vsOut()); |
| args.fFragBuilder->codeAppendf("%s = %s;", args.fOutputColor, varying.fsIn()); |
| } |
| args.fFragBuilder->codeAppend("float2 texCoord;"); |
| args.fVaryingHandler->addPassThroughAttribute(textureGP.fTextureCoords, "texCoord"); |
| if (textureGP.fDomain.isInitialized()) { |
| args.fFragBuilder->codeAppend("float4 domain;"); |
| args.fVaryingHandler->addPassThroughAttribute( |
| textureGP.fDomain, "domain", |
| GrGLSLVaryingHandler::Interpolation::kCanBeFlat); |
| args.fFragBuilder->codeAppend( |
| "texCoord = clamp(texCoord, domain.xy, domain.zw);"); |
| } |
| args.fFragBuilder->codeAppendf("%s = ", args.fOutputColor); |
| args.fFragBuilder->appendTextureLookupAndModulate( |
| args.fOutputColor, args.fTexSamplers[0], "texCoord", kFloat2_GrSLType, |
| &fTextureColorSpaceXformHelper); |
| args.fFragBuilder->codeAppend(";"); |
| if (textureGP.usesCoverageEdgeAA()) { |
| bool mulByFragCoordW = false; |
| GrGLSLVarying aaDistVarying(kFloat4_GrSLType, |
| GrGLSLVarying::Scope::kVertToFrag); |
| if (kFloat3_GrVertexAttribType == textureGP.fPositions.type()) { |
| args.fVaryingHandler->addVarying("aaDists", &aaDistVarying); |
| // The distance from edge equation e to homogenous point p=sk_Position |
| // is e.x*p.x/p.wx + e.y*p.y/p.w + e.z. However, we want screen space |
| // interpolation of this distance. We can do this by multiplying the |
| // varying in the VS by p.w and then multiplying by sk_FragCoord.w in |
| // the FS. So we output e.x*p.x + e.y*p.y + e.z * p.w |
| args.fVertBuilder->codeAppendf( |
| R"(%s = float4(dot(aaEdge0, %s), dot(aaEdge1, %s), |
| dot(aaEdge2, %s), dot(aaEdge3, %s));)", |
| aaDistVarying.vsOut(), textureGP.fPositions.name(), |
| textureGP.fPositions.name(), textureGP.fPositions.name(), |
| textureGP.fPositions.name()); |
| mulByFragCoordW = true; |
| } else { |
| 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.name(), |
| textureGP.fPositions.name(), textureGP.fPositions.name(), |
| textureGP.fPositions.name()); |
| } |
| args.fFragBuilder->codeAppendf( |
| "float mindist = min(min(%s.x, %s.y), min(%s.z, %s.w));", |
| aaDistVarying.fsIn(), aaDistVarying.fsIn(), aaDistVarying.fsIn(), |
| aaDistVarying.fsIn()); |
| if (mulByFragCoordW) { |
| args.fFragBuilder->codeAppend("mindist *= sk_FragCoord.w;"); |
| } |
| args.fFragBuilder->codeAppendf("%s = float4(saturate(mindist));", |
| args.fOutputCoverage); |
| } else { |
| args.fFragBuilder->codeAppendf("%s = float4(1);", args.fOutputCoverage); |
| } |
| } |
| GrGLSLColorSpaceXformHelper fTextureColorSpaceXformHelper; |
| GrGLSLColorSpaceXformHelper fPaintColorSpaceXformHelper; |
| }; |
| return new GLSLProcessor; |
| } |
| |
| bool usesCoverageEdgeAA() const { return SkToBool(fAAEdges[0].isInitialized()); } |
| |
| private: |
| TextureGeometryProcessor(GrTextureType textureType, GrPixelConfig textureConfig, |
| GrSamplerState::Filter filter, |
| sk_sp<GrColorSpaceXform> textureColorSpaceXform, |
| sk_sp<GrColorSpaceXform> paintColorSpaceXform, bool coverageAA, |
| bool perspective, Domain domain, const GrShaderCaps& caps) |
| : INHERITED(kTextureGeometryProcessor_ClassID) |
| , fTextureColorSpaceXform(std::move(textureColorSpaceXform)) |
| , fPaintColorSpaceXform(std::move(paintColorSpaceXform)) |
| , fSampler(textureType, textureConfig, filter) { |
| this->setTextureSamplerCnt(1); |
| |
| if (perspective) { |
| fPositions = {"position", kFloat3_GrVertexAttribType}; |
| } else { |
| fPositions = {"position", kFloat2_GrVertexAttribType}; |
| } |
| fColors = {"color", kUByte4_norm_GrVertexAttribType}; |
| fTextureCoords = {"textureCoords", kFloat2_GrVertexAttribType}; |
| int vertexAttributeCnt = 3; |
| |
| if (domain == Domain::kYes) { |
| fDomain = {"domain", kFloat4_GrVertexAttribType}; |
| ++vertexAttributeCnt; |
| } |
| if (coverageAA) { |
| fAAEdges[0] = {"aaEdge0", kFloat3_GrVertexAttribType}; |
| fAAEdges[1] = {"aaEdge1", kFloat3_GrVertexAttribType}; |
| fAAEdges[2] = {"aaEdge2", kFloat3_GrVertexAttribType}; |
| fAAEdges[3] = {"aaEdge3", kFloat3_GrVertexAttribType}; |
| vertexAttributeCnt += 4; |
| } |
| this->setVertexAttributeCnt(vertexAttributeCnt); |
| } |
| |
| const Attribute& onVertexAttribute(int i) const override { |
| return IthInitializedAttribute(i, fPositions, fColors, fTextureCoords, fDomain, fAAEdges[0], |
| fAAEdges[1], fAAEdges[2], fAAEdges[3]); |
| } |
| |
| const TextureSampler& onTextureSampler(int) const override { return fSampler; } |
| |
| Attribute fPositions; |
| Attribute fColors; |
| Attribute fTextureCoords; |
| Attribute fDomain; |
| Attribute fAAEdges[4]; |
| sk_sp<GrColorSpaceXform> fTextureColorSpaceXform; |
| sk_sp<GrColorSpaceXform> fPaintColorSpaceXform; |
| TextureSampler fSampler; |
| |
| typedef GrGeometryProcessor INHERITED; |
| }; |
| |
| // This computes the four edge equations for a quad, then outsets them and computes a new quad |
| // as the intersection points of the outset edges. 'x' and 'y' contain the original points as input |
| // and the outset points as output. 'a', 'b', and 'c' are the edge equation coefficients on output. |
| static void compute_quad_edges_and_outset_vertices(Sk4f* x, Sk4f* y, Sk4f* a, Sk4f* b, Sk4f* c) { |
| static constexpr auto fma = SkNx_fma<4, float>; |
| // These rotate the points/edge values either clockwise or counterclockwise assuming tri strip |
| // order. |
| auto nextCW = [](const Sk4f& v) { return SkNx_shuffle<2, 0, 3, 1>(v); }; |
| auto nextCCW = [](const Sk4f& v) { return SkNx_shuffle<1, 3, 0, 2>(v); }; |
| |
| auto xnext = nextCCW(*x); |
| auto ynext = nextCCW(*y); |
| *a = ynext - *y; |
| *b = *x - xnext; |
| *c = fma(xnext, *y, -ynext * *x); |
| Sk4f invNormLengths = (*a * *a + *b * *b).rsqrt(); |
| // Make sure the edge equations have their normals facing into the quad in device space. |
| auto test = fma(*a, nextCW(*x), fma(*b, nextCW(*y), *c)); |
| if ((test < Sk4f(0)).anyTrue()) { |
| invNormLengths = -invNormLengths; |
| } |
| *a *= invNormLengths; |
| *b *= invNormLengths; |
| *c *= invNormLengths; |
| |
| // Here is the outset. 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. |
| *c += Sk4f(0.5f); |
| |
| // 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. |
| auto anext = nextCW(*a); |
| auto bnext = nextCW(*b); |
| auto cnext = nextCW(*c); |
| *x = fma(bnext, *c, -*b * cnext); |
| *y = fma(*a, cnext, -anext * *c); |
| auto ic = (fma(anext, *b, -bnext * *a)).invert(); |
| *x *= ic; |
| *y *= ic; |
| } |
| |
| namespace { |
| // This is a class soley so it can be partially specialized (functions cannot be). |
| template <typename V, GrAA AA = V::kAA, typename Position = typename V::Position> |
| class VertexAAHandler; |
| |
| template<typename V> class VertexAAHandler<V, GrAA::kNo, SkPoint> { |
| public: |
| static void AssignPositionsAndTexCoords(V* vertices, const GrPerspQuad& quad, |
| const SkRect& texRect) { |
| SkASSERT((quad.w4f() == Sk4f(1.f)).allTrue()); |
| SkPointPriv::SetRectTriStrip(&vertices[0].fTextureCoords, texRect, sizeof(V)); |
| for (int i = 0; i < 4; ++i) { |
| vertices[i].fPosition = {quad.x(i), quad.y(i)}; |
| } |
| } |
| }; |
| |
| template<typename V> class VertexAAHandler<V, GrAA::kNo, SkPoint3> { |
| public: |
| static void AssignPositionsAndTexCoords(V* vertices, const GrPerspQuad& quad, |
| const SkRect& texRect) { |
| SkPointPriv::SetRectTriStrip(&vertices[0].fTextureCoords, texRect, sizeof(V)); |
| for (int i = 0; i < 4; ++i) { |
| vertices[i].fPosition = quad.point(i); |
| } |
| } |
| }; |
| |
| template<typename V> class VertexAAHandler<V, GrAA::kYes, SkPoint> { |
| public: |
| static void AssignPositionsAndTexCoords(V* vertices, const GrPerspQuad& quad, |
| const SkRect& texRect) { |
| SkASSERT((quad.w4f() == Sk4f(1.f)).allTrue()); |
| auto x = quad.x4f(); |
| auto y = quad.y4f(); |
| Sk4f a, b, c; |
| compute_quad_edges_and_outset_vertices(&x, &y, &a, &b, &c); |
| |
| for (int i = 0; i < 4; ++i) { |
| vertices[i].fPosition = {x[i], y[i]}; |
| for (int j = 0; j < 4; ++j) { |
| vertices[i].fEdges[j] = {a[j], b[j], c[j]}; |
| } |
| } |
| |
| AssignTexCoords(vertices, quad, texRect); |
| } |
| |
| private: |
| static void AssignTexCoords(V* vertices, const GrPerspQuad& quad, const SkRect& tex) { |
| SkMatrix q = SkMatrix::MakeAll(quad.x(0), quad.x(1), quad.x(2), |
| quad.y(0), quad.y(1), quad.y(2), |
| 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(V), |
| &vertices[0].fPosition, sizeof(V), 4); |
| } |
| }; |
| |
| template<typename V> class VertexAAHandler<V, GrAA::kYes, SkPoint3> { |
| public: |
| static void AssignPositionsAndTexCoords(V* vertices, const GrPerspQuad& quad, |
| const SkRect& texRect) { |
| auto x = quad.x4f(); |
| auto y = quad.y4f(); |
| auto iw = quad.iw4f(); |
| x *= iw; |
| y *= iw; |
| |
| // Get an equation for w from device space coords. |
| SkMatrix P; |
| P.setAll(x[0], y[0], 1, x[1], y[1], 1, x[2], y[2], 1); |
| SkAssertResult(P.invert(&P)); |
| SkPoint3 weq{quad.w(0), quad.w(1), quad.w(2)}; |
| P.mapHomogeneousPoints(&weq, &weq, 1); |
| |
| Sk4f a, b, c; |
| compute_quad_edges_and_outset_vertices(&x, &y, &a, &b, &c); |
| |
| // Compute new w values for the output vertices; |
| auto w = Sk4f(weq.fX) * x + Sk4f(weq.fY) * y + Sk4f(weq.fZ); |
| x *= w; |
| y *= w; |
| |
| for (int i = 0; i < 4; ++i) { |
| vertices[i].fPosition = {x[i], y[i], w[i]}; |
| for (int j = 0; j < 4; ++j) { |
| vertices[i].fEdges[j] = {a[j], b[j], c[j]}; |
| } |
| } |
| |
| AssignTexCoords(vertices, quad, texRect); |
| } |
| |
| private: |
| static void AssignTexCoords(V* vertices, const GrPerspQuad& quad, const SkRect& tex) { |
| SkMatrix q = SkMatrix::MakeAll(quad.x(0), quad.x(1), quad.x(2), |
| quad.y(0), quad.y(1), quad.y(2), |
| quad.w(0), quad.w(1), quad.w(2)); |
| 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); |
| SkPoint3 tempTexCoords[4]; |
| SkMatrixPriv::MapHomogeneousPointsWithStride(map, tempTexCoords, sizeof(SkPoint3), |
| &vertices[0].fPosition, sizeof(V), 4); |
| for (int i = 0; i < 4; ++i) { |
| auto invW = 1.f / tempTexCoords[i].fZ; |
| vertices[i].fTextureCoords.fX = tempTexCoords[i].fX * invW; |
| vertices[i].fTextureCoords.fY = tempTexCoords[i].fY * invW; |
| } |
| } |
| }; |
| |
| template <typename V, Domain D = V::kDomain> struct DomainAssigner; |
| |
| template <typename V> struct DomainAssigner<V, Domain::kYes> { |
| static void Assign(V* vertices, Domain domain, GrSamplerState::Filter filter, |
| const SkRect& srcRect, GrSurfaceOrigin origin, float iw, float ih) { |
| static constexpr SkRect kLargeRect = {-2, -2, 2, 2}; |
| SkRect domainRect; |
| if (domain == Domain::kYes) { |
| auto ltrb = Sk4f::Load(&srcRect); |
| if (filter == GrSamplerState::Filter::kBilerp) { |
| auto rblt = SkNx_shuffle<2, 3, 0, 1>(ltrb); |
| auto whwh = (rblt - ltrb).abs(); |
| auto c = (rblt + ltrb) * 0.5f; |
| static const Sk4f kOffsets = {0.5f, 0.5f, -0.5f, -0.5f}; |
| ltrb = (whwh < 1.f).thenElse(c, ltrb + kOffsets); |
| } |
| ltrb *= Sk4f(iw, ih, iw, ih); |
| if (origin == kBottomLeft_GrSurfaceOrigin) { |
| static const Sk4f kMul = {1.f, -1.f, 1.f, -1.f}; |
| static const Sk4f kAdd = {0.f, 1.f, 0.f, 1.f}; |
| ltrb = SkNx_shuffle<0, 3, 2, 1>(kMul * ltrb + kAdd); |
| } |
| ltrb.store(&domainRect); |
| } else { |
| domainRect = kLargeRect; |
| } |
| for (int i = 0; i < 4; ++i) { |
| vertices[i].fTextureDomain = domainRect; |
| } |
| } |
| }; |
| |
| template <typename V> struct DomainAssigner<V, Domain::kNo> { |
| static void Assign(V*, Domain domain, GrSamplerState::Filter, const SkRect&, GrSurfaceOrigin, |
| float iw, float ih) { |
| SkASSERT(domain == Domain::kNo); |
| } |
| }; |
| |
| } // anonymous namespace |
| |
| template <typename V> |
| static void tessellate_quad(const GrPerspQuad& devQuad, const SkRect& srcRect, GrColor color, |
| GrSurfaceOrigin origin, GrSamplerState::Filter filter, V* vertices, |
| SkScalar iw, SkScalar ih, Domain domain) { |
| 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<V>::AssignPositionsAndTexCoords(vertices, devQuad, texRect); |
| vertices[0].fColor = color; |
| vertices[1].fColor = color; |
| vertices[2].fColor = color; |
| vertices[3].fColor = color; |
| DomainAssigner<V>::Assign(vertices, domain, filter, srcRect, origin, iw, ih); |
| } |
| |
| /** |
| * 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(GrContext* context, |
| sk_sp<GrTextureProxy> proxy, |
| GrSamplerState::Filter filter, |
| GrColor color, |
| const SkRect& srcRect, |
| const SkRect& dstRect, |
| GrAAType aaType, |
| SkCanvas::SrcRectConstraint constraint, |
| const SkMatrix& viewMatrix, |
| sk_sp<GrColorSpaceXform> textureColorSpaceXform, |
| sk_sp<GrColorSpaceXform> paintColorSpaceXform) { |
| GrOpMemoryPool* pool = context->contextPriv().opMemoryPool(); |
| |
| return pool->allocate<TextureOp>(std::move(proxy), filter, color, |
| srcRect, dstRect, aaType, constraint, |
| viewMatrix, std::move(textureColorSpaceXform), |
| std::move(paintColorSpaceXform)); |
| } |
| |
| ~TextureOp() override { |
| if (fFinalized) { |
| fProxy->completedRead(); |
| } else { |
| fProxy->unref(); |
| } |
| } |
| |
| const char* name() const override { return "TextureOp"; } |
| |
| void visitProxies(const VisitProxyFunc& func) const override { func(fProxy); } |
| |
| SkString dumpInfo() const override { |
| SkString str; |
| str.appendf("# draws: %d\n", fDraws.count()); |
| str.appendf("Proxy ID: %d, Filter: %d\n", fProxy->uniqueID().asUInt(), |
| static_cast<int>(fFilter)); |
| 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.color(), draw.srcRect().fLeft, draw.srcRect().fTop, |
| draw.srcRect().fRight, draw.srcRect().fBottom, draw.quad().point(0).fX, |
| draw.quad().point(0).fY, draw.quad().point(1).fX, draw.quad().point(1).fY, |
| draw.quad().point(2).fX, draw.quad().point(2).fY, draw.quad().point(3).fX, |
| draw.quad().point(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 this->aaType() == GrAAType::kMSAA ? FixedFunctionFlags::kUsesHWAA |
| : FixedFunctionFlags::kNone; |
| } |
| |
| DEFINE_OP_CLASS_ID |
| |
| private: |
| friend class ::GrOpMemoryPool; |
| |
| TextureOp(sk_sp<GrTextureProxy> proxy, GrSamplerState::Filter filter, GrColor color, |
| const SkRect& srcRect, const SkRect& dstRect, GrAAType aaType, |
| SkCanvas::SrcRectConstraint constraint, const SkMatrix& viewMatrix, |
| sk_sp<GrColorSpaceXform> textureColorSpaceXform, |
| sk_sp<GrColorSpaceXform> paintColorSpaceXform) |
| : INHERITED(ClassID()) |
| , fTextureColorSpaceXform(std::move(textureColorSpaceXform)) |
| , fPaintColorSpaceXform(std::move(paintColorSpaceXform)) |
| , fProxy(proxy.release()) |
| , fFilter(filter) |
| , fAAType(static_cast<unsigned>(aaType)) |
| , fFinalized(0) { |
| SkASSERT(aaType != GrAAType::kMixedSamples); |
| fPerspective = viewMatrix.hasPerspective(); |
| auto quad = GrPerspQuad(dstRect, viewMatrix); |
| auto bounds = quad.bounds(); |
| #ifndef SK_DONT_DROP_UNNECESSARY_AA_IN_TEXTURE_OP |
| if (GrAAType::kCoverage == this->aaType() && viewMatrix.rectStaysRect()) { |
| // Disable coverage AA when rect falls on integers in device space. |
| auto is_int = [](float f) { return f == sk_float_floor(f); }; |
| if (is_int(bounds.fLeft) && is_int(bounds.fTop) && is_int(bounds.fRight) && |
| is_int(bounds.fBottom)) { |
| fAAType = static_cast<unsigned>(GrAAType::kNone); |
| // We may have had a strict constraint with nearest filter soley due to possible AA |
| // bloat. In that case it's no longer necessary. |
| if (constraint == SkCanvas::kStrict_SrcRectConstraint && |
| filter == GrSamplerState::Filter::kNearest) { |
| constraint = SkCanvas::kFast_SrcRectConstraint; |
| } |
| } |
| } |
| #endif |
| const auto& draw = fDraws.emplace_back(srcRect, quad, constraint, color); |
| this->setBounds(bounds, HasAABloat::kNo, IsZeroArea::kNo); |
| fDomain = static_cast<bool>(draw.domain()); |
| } |
| |
| template <typename Pos, Domain D, GrAA AA> |
| void tess(void* v, const GrGeometryProcessor* gp) { |
| using Vertex = TextureGeometryProcessor::Vertex<Pos, D, AA>; |
| SkASSERT(gp->debugOnly_vertexStride() == sizeof(Vertex)); |
| auto vertices = static_cast<Vertex*>(v); |
| auto origin = fProxy->origin(); |
| const auto* texture = fProxy->peekTexture(); |
| float iw = 1.f / texture->width(); |
| float ih = 1.f / texture->height(); |
| |
| for (const auto& draw : fDraws) { |
| tessellate_quad<Vertex>(draw.quad(), draw.srcRect(), draw.color(), origin, fFilter, |
| vertices, iw, ih, draw.domain()); |
| vertices += 4; |
| } |
| } |
| |
| void onPrepareDraws(Target* target) override { |
| if (!fProxy->instantiate(target->resourceProvider())) { |
| return; |
| } |
| |
| Domain domain = fDomain ? Domain::kYes : Domain::kNo; |
| bool coverageAA = GrAAType::kCoverage == this->aaType(); |
| sk_sp<GrGeometryProcessor> gp = TextureGeometryProcessor::Make( |
| fProxy->textureType(), fProxy->config(), fFilter, |
| std::move(fTextureColorSpaceXform), std::move(fPaintColorSpaceXform), coverageAA, |
| fPerspective, domain, *target->caps().shaderCaps()); |
| GrPipeline::InitArgs args; |
| args.fProxy = target->proxy(); |
| args.fCaps = &target->caps(); |
| args.fResourceProvider = target->resourceProvider(); |
| args.fFlags = 0; |
| if (GrAAType::kMSAA == this->aaType()) { |
| args.fFlags |= GrPipeline::kHWAntialias_Flag; |
| } |
| |
| auto clip = target->detachAppliedClip(); |
| auto* fixedDynamicState = target->allocFixedDynamicState(clip.scissorState().rect(), 1); |
| fixedDynamicState->fPrimitiveProcessorTextures[0] = fProxy; |
| const auto* pipeline = |
| target->allocPipeline(args, GrProcessorSet::MakeEmptySet(), std::move(clip)); |
| using TessFn = decltype(&TextureOp::tess<SkPoint, Domain::kNo, GrAA::kNo>); |
| #define TESS_FN_AND_VERTEX_SIZE(Point, Domain, AA) \ |
| { \ |
| &TextureOp::tess<Point, Domain, AA>, \ |
| sizeof(TextureGeometryProcessor::Vertex<Point, Domain, AA>) \ |
| } |
| static constexpr struct { |
| TessFn fTessFn; |
| size_t fVertexSize; |
| } kTessFnsAndVertexSizes[] = { |
| TESS_FN_AND_VERTEX_SIZE(SkPoint, Domain::kNo, GrAA::kNo), |
| TESS_FN_AND_VERTEX_SIZE(SkPoint, Domain::kNo, GrAA::kYes), |
| TESS_FN_AND_VERTEX_SIZE(SkPoint, Domain::kYes, GrAA::kNo), |
| TESS_FN_AND_VERTEX_SIZE(SkPoint, Domain::kYes, GrAA::kYes), |
| TESS_FN_AND_VERTEX_SIZE(SkPoint3, Domain::kNo, GrAA::kNo), |
| TESS_FN_AND_VERTEX_SIZE(SkPoint3, Domain::kNo, GrAA::kYes), |
| TESS_FN_AND_VERTEX_SIZE(SkPoint3, Domain::kYes, GrAA::kNo), |
| TESS_FN_AND_VERTEX_SIZE(SkPoint3, Domain::kYes, GrAA::kYes), |
| }; |
| #undef TESS_FN_AND_VERTEX_SIZE |
| int tessFnIdx = 0; |
| tessFnIdx |= coverageAA ? 0x1 : 0x0; |
| tessFnIdx |= fDomain ? 0x2 : 0x0; |
| tessFnIdx |= fPerspective ? 0x4 : 0x0; |
| |
| SkASSERT(kTessFnsAndVertexSizes[tessFnIdx].fVertexSize == gp->debugOnly_vertexStride()); |
| |
| int vstart; |
| const GrBuffer* vbuffer; |
| void* vdata = target->makeVertexSpace(kTessFnsAndVertexSizes[tessFnIdx].fVertexSize, |
| 4 * fDraws.count(), &vbuffer, &vstart); |
| if (!vdata) { |
| SkDebugf("Could not allocate vertices\n"); |
| return; |
| } |
| |
| (this->*(kTessFnsAndVertexSizes[tessFnIdx].fTessFn))(vdata, gp.get()); |
| |
| GrPrimitiveType primitiveType = |
| fDraws.count() > 1 ? GrPrimitiveType::kTriangles : GrPrimitiveType::kTriangleStrip; |
| GrMesh* mesh = target->allocMesh(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(std::move(gp), pipeline, fixedDynamicState, mesh); |
| } |
| |
| CombineResult onCombineIfPossible(GrOp* t, const GrCaps&) override { |
| const auto* that = t->cast<TextureOp>(); |
| if (!GrColorSpaceXform::Equals(fTextureColorSpaceXform.get(), |
| that->fTextureColorSpaceXform.get())) { |
| return CombineResult::kCannotCombine; |
| } |
| if (!GrColorSpaceXform::Equals(fPaintColorSpaceXform.get(), |
| that->fPaintColorSpaceXform.get())) { |
| return CombineResult::kCannotCombine; |
| } |
| if (this->aaType() != that->aaType()) { |
| return CombineResult::kCannotCombine; |
| } |
| if (fProxy->uniqueID() != that->fProxy->uniqueID() || fFilter != that->fFilter) { |
| return CombineResult::kCannotCombine; |
| } |
| fDraws.push_back_n(that->fDraws.count(), that->fDraws.begin()); |
| this->joinBounds(*that); |
| fPerspective |= that->fPerspective; |
| fDomain |= that->fDomain; |
| return CombineResult::kMerged; |
| } |
| |
| GrAAType aaType() const { return static_cast<GrAAType>(fAAType); } |
| |
| class Draw { |
| public: |
| Draw(const SkRect& srcRect, const GrPerspQuad& quad, SkCanvas::SrcRectConstraint constraint, |
| GrColor color) |
| : fSrcRect(srcRect) |
| , fQuad(quad) |
| , fColor(color) |
| , fHasDomain(constraint == SkCanvas::kStrict_SrcRectConstraint) {} |
| const GrPerspQuad& quad() const { return fQuad; } |
| const SkRect& srcRect() const { return fSrcRect; } |
| GrColor color() const { return fColor; } |
| Domain domain() const { return Domain(fHasDomain); } |
| |
| private: |
| SkRect fSrcRect; |
| GrPerspQuad fQuad; |
| GrColor fColor; |
| bool fHasDomain; |
| }; |
| SkSTArray<1, Draw, true> fDraws; |
| sk_sp<GrColorSpaceXform> fTextureColorSpaceXform; |
| sk_sp<GrColorSpaceXform> fPaintColorSpaceXform; |
| GrTextureProxy* fProxy; |
| GrSamplerState::Filter fFilter; |
| unsigned fAAType : 2; |
| unsigned fPerspective : 1; |
| unsigned fDomain : 1; |
| // Used to track whether fProxy is ref'ed or has a pending IO after finalize() is called. |
| unsigned fFinalized : 1; |
| |
| typedef GrMeshDrawOp INHERITED; |
| }; |
| |
| } // anonymous namespace |
| |
| namespace GrTextureOp { |
| |
| std::unique_ptr<GrDrawOp> Make(GrContext* context, |
| sk_sp<GrTextureProxy> proxy, |
| GrSamplerState::Filter filter, |
| GrColor color, |
| const SkRect& srcRect, |
| const SkRect& dstRect, |
| GrAAType aaType, |
| SkCanvas::SrcRectConstraint constraint, |
| const SkMatrix& viewMatrix, |
| sk_sp<GrColorSpaceXform> textureColorSpaceXform, |
| sk_sp<GrColorSpaceXform> paintColorSpaceXform) { |
| return TextureOp::Make(context, std::move(proxy), filter, color, srcRect, dstRect, aaType, |
| constraint, viewMatrix, std::move(textureColorSpaceXform), |
| std::move(paintColorSpaceXform)); |
| } |
| |
| } // 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; |
| auto origin = random->nextBool() ? kTopLeft_GrSurfaceOrigin : kBottomLeft_GrSurfaceOrigin; |
| GrMipMapped mipMapped = random->nextBool() ? GrMipMapped::kYes : GrMipMapped::kNo; |
| SkBackingFit fit = SkBackingFit::kExact; |
| if (mipMapped == GrMipMapped::kNo) { |
| fit = random->nextBool() ? SkBackingFit::kApprox : SkBackingFit::kExact; |
| } |
| |
| GrProxyProvider* proxyProvider = context->contextPriv().proxyProvider(); |
| sk_sp<GrTextureProxy> proxy = proxyProvider->createProxy(desc, origin, mipMapped, fit, |
| SkBudgeted::kNo, |
| GrInternalSurfaceFlags::kNone); |
| |
| 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); |
| while (mipMapped == GrMipMapped::kNo && filter == GrSamplerState::Filter::kMipMap) { |
| filter = (GrSamplerState::Filter)random->nextULessThan( |
| static_cast<uint32_t>(GrSamplerState::Filter::kMipMap) + 1); |
| } |
| auto texXform = GrTest::TestColorXform(random); |
| auto paintXform = GrTest::TestColorXform(random); |
| GrAAType aaType = GrAAType::kNone; |
| if (random->nextBool()) { |
| aaType = (fsaaType == GrFSAAType::kUnifiedMSAA) ? GrAAType::kMSAA : GrAAType::kCoverage; |
| } |
| auto constraint = random->nextBool() ? SkCanvas::kStrict_SrcRectConstraint |
| : SkCanvas::kFast_SrcRectConstraint; |
| return GrTextureOp::Make(context, std::move(proxy), filter, color, srcRect, rect, aaType, |
| constraint, viewMatrix, std::move(texXform), std::move(paintXform)); |
| } |
| |
| #endif |
