diff options
| -rw-r--r-- | src/effects/GrCircleBlurFragmentProcessor.cpp | 554 |
1 files changed, 277 insertions, 277 deletions
diff --git a/src/effects/GrCircleBlurFragmentProcessor.cpp b/src/effects/GrCircleBlurFragmentProcessor.cpp index 5759fc47cf..d05a7f5a20 100644 --- a/src/effects/GrCircleBlurFragmentProcessor.cpp +++ b/src/effects/GrCircleBlurFragmentProcessor.cpp @@ -6,253 +6,227 @@ */ /* - * This file was autogenerated from GrCircleBlurFragmentProcessor.fp; do not modify. + * This file was autogenerated from GrCircleBlurFragmentProcessor.fp; do not + * modify. */ #include "GrCircleBlurFragmentProcessor.h" #if SK_SUPPORT_GPU - #include "GrResourceProvider.h" - - - - static float make_unnormalized_half_kernel(float* halfKernel, int halfKernelSize, float sigma) { - const float invSigma = 1.f / sigma; - const float b = -0.5f * invSigma * invSigma; - float tot = 0.0f; - - float t = 0.5f; - for (int i = 0; i < halfKernelSize; ++i) { - float value = expf(t * t * b); - tot += value; - halfKernel[i] = value; - t += 1.f; - } - return tot; - } +#include "GrResourceProvider.h" - - - static void make_half_kernel_and_summed_table(float* halfKernel, float* summedHalfKernel, - int halfKernelSize, float sigma) { - - const float tot = 2.f * make_unnormalized_half_kernel(halfKernel, halfKernelSize, sigma); - float sum = 0.f; - for (int i = 0; i < halfKernelSize; ++i) { - halfKernel[i] /= tot; - sum += halfKernel[i]; - summedHalfKernel[i] = sum; - } - } +static float make_unnormalized_half_kernel(float* halfKernel, + int halfKernelSize, float sigma) { + const float invSigma = 1.f / sigma; + const float b = -0.5f * invSigma * invSigma; + float tot = 0.0f; - - - void apply_kernel_in_y(float* results, int numSteps, float firstX, float circleR, - int halfKernelSize, const float* summedHalfKernelTable) { - float x = firstX; - for (int i = 0; i < numSteps; ++i, x += 1.f) { - if (x < -circleR || x > circleR) { - results[i] = 0; - continue; - } - float y = sqrtf(circleR * circleR - x * x); - - - y -= 0.5f; - int yInt = SkScalarFloorToInt(y); - SkASSERT(yInt >= -1); - if (y < 0) { - results[i] = (y + 0.5f) * summedHalfKernelTable[0]; - } else if (yInt >= halfKernelSize - 1) { - results[i] = 0.5f; - } else { - float yFrac = y - yInt; - results[i] = (1.f - yFrac) * summedHalfKernelTable[yInt] + - yFrac * summedHalfKernelTable[yInt + 1]; - } - } - } + float t = 0.5f; + for (int i = 0; i < halfKernelSize; ++i) { + float value = expf(t * t * b); + tot += value; + halfKernel[i] = value; + t += 1.f; + } + return tot; +} + +static void make_half_kernel_and_summed_table(float* halfKernel, + float* summedHalfKernel, + int halfKernelSize, float sigma) { + const float tot = + 2.f * make_unnormalized_half_kernel(halfKernel, halfKernelSize, sigma); + float sum = 0.f; + for (int i = 0; i < halfKernelSize; ++i) { + halfKernel[i] /= tot; + sum += halfKernel[i]; + summedHalfKernel[i] = sum; + } +} - - - - - static uint8_t eval_at(float evalX, float circleR, const float* halfKernel, int halfKernelSize, - const float* yKernelEvaluations) { - float acc = 0; - - float x = evalX - halfKernelSize; - for (int i = 0; i < halfKernelSize; ++i, x += 1.f) { - if (x < -circleR || x > circleR) { - continue; - } - float verticalEval = yKernelEvaluations[i]; - acc += verticalEval * halfKernel[halfKernelSize - i - 1]; - } - for (int i = 0; i < halfKernelSize; ++i, x += 1.f) { - if (x < -circleR || x > circleR) { - continue; - } - float verticalEval = yKernelEvaluations[i + halfKernelSize]; - acc += verticalEval * halfKernel[i]; - } - - - return SkUnitScalarClampToByte(2.f * acc); +void apply_kernel_in_y(float* results, int numSteps, float firstX, + float circleR, int halfKernelSize, + const float* summedHalfKernelTable) { + float x = firstX; + for (int i = 0; i < numSteps; ++i, x += 1.f) { + if (x < -circleR || x > circleR) { + results[i] = 0; + continue; } + float y = sqrtf(circleR * circleR - x * x); - - - - - - - - static uint8_t* create_circle_profile(float sigma, float circleR, int profileTextureWidth) { - const int numSteps = profileTextureWidth; - uint8_t* weights = new uint8_t[numSteps]; - - - int halfKernelSize = SkScalarCeilToInt(6.0f*sigma); - - halfKernelSize = ((halfKernelSize + 1) & ~1) >> 1; - - - int numYSteps = numSteps + 2 * halfKernelSize; - - SkAutoTArray<float> bulkAlloc(halfKernelSize + halfKernelSize + numYSteps); - float* halfKernel = bulkAlloc.get(); - float* summedKernel = bulkAlloc.get() + halfKernelSize; - float* yEvals = bulkAlloc.get() + 2 * halfKernelSize; - make_half_kernel_and_summed_table(halfKernel, summedKernel, halfKernelSize, sigma); - - float firstX = -halfKernelSize + 0.5f; - apply_kernel_in_y(yEvals, numYSteps, firstX, circleR, halfKernelSize, summedKernel); - - for (int i = 0; i < numSteps - 1; ++i) { - float evalX = i + 0.5f; - weights[i] = eval_at(evalX, circleR, halfKernel, halfKernelSize, yEvals + i); - } - - weights[numSteps - 1] = 0; - return weights; + y -= 0.5f; + int yInt = SkScalarFloorToInt(y); + SkASSERT(yInt >= -1); + if (y < 0) { + results[i] = (y + 0.5f) * summedHalfKernelTable[0]; + } else if (yInt >= halfKernelSize - 1) { + results[i] = 0.5f; + } else { + float yFrac = y - yInt; + results[i] = (1.f - yFrac) * summedHalfKernelTable[yInt] + + yFrac * summedHalfKernelTable[yInt + 1]; } + } +} + +static uint8_t eval_at(float evalX, float circleR, const float* halfKernel, + int halfKernelSize, const float* yKernelEvaluations) { + float acc = 0; - static uint8_t* create_half_plane_profile(int profileWidth) { - SkASSERT(!(profileWidth & 0x1)); - - float sigma = profileWidth / 6.f; - int halfKernelSize = profileWidth / 2; - - SkAutoTArray<float> halfKernel(halfKernelSize); - uint8_t* profile = new uint8_t[profileWidth]; - - - const float tot = 2.f * make_unnormalized_half_kernel(halfKernel.get(), halfKernelSize, - sigma); - float sum = 0.f; - - for (int i = 0; i < halfKernelSize; ++i) { - halfKernel[halfKernelSize - i - 1] /= tot; - sum += halfKernel[halfKernelSize - i - 1]; - profile[profileWidth - i - 1] = SkUnitScalarClampToByte(sum); - } - - - for (int i = 0; i < halfKernelSize; ++i) { - sum += halfKernel[i]; - profile[halfKernelSize - i - 1] = SkUnitScalarClampToByte(sum); - } - - profile[profileWidth - 1] = 0; - return profile; + float x = evalX - halfKernelSize; + for (int i = 0; i < halfKernelSize; ++i, x += 1.f) { + if (x < -circleR || x > circleR) { + continue; + } + float verticalEval = yKernelEvaluations[i]; + acc += verticalEval * halfKernel[halfKernelSize - i - 1]; + } + for (int i = 0; i < halfKernelSize; ++i, x += 1.f) { + if (x < -circleR || x > circleR) { + continue; } + float verticalEval = yKernelEvaluations[i + halfKernelSize]; + acc += verticalEval * halfKernel[i]; + } + + return SkUnitScalarClampToByte(2.f * acc); +} + +static uint8_t* create_circle_profile(float sigma, float circleR, + int profileTextureWidth) { + const int numSteps = profileTextureWidth; + uint8_t* weights = new uint8_t[numSteps]; + + int halfKernelSize = SkScalarCeilToInt(6.0f * sigma); + + halfKernelSize = ((halfKernelSize + 1) & ~1) >> 1; + + int numYSteps = numSteps + 2 * halfKernelSize; + + SkAutoTArray<float> bulkAlloc(halfKernelSize + halfKernelSize + numYSteps); + float* halfKernel = bulkAlloc.get(); + float* summedKernel = bulkAlloc.get() + halfKernelSize; + float* yEvals = bulkAlloc.get() + 2 * halfKernelSize; + make_half_kernel_and_summed_table(halfKernel, summedKernel, halfKernelSize, + sigma); + + float firstX = -halfKernelSize + 0.5f; + apply_kernel_in_y(yEvals, numYSteps, firstX, circleR, halfKernelSize, + summedKernel); + + for (int i = 0; i < numSteps - 1; ++i) { + float evalX = i + 0.5f; + weights[i] = + eval_at(evalX, circleR, halfKernel, halfKernelSize, yEvals + i); + } + + weights[numSteps - 1] = 0; + return weights; +} + +static uint8_t* create_half_plane_profile(int profileWidth) { + SkASSERT(!(profileWidth & 0x1)); + + float sigma = profileWidth / 6.f; + int halfKernelSize = profileWidth / 2; + + SkAutoTArray<float> halfKernel(halfKernelSize); + uint8_t* profile = new uint8_t[profileWidth]; - static sk_sp<GrTextureProxy> create_profile_texture(GrResourceProvider* resourceProvider, - const SkRect& circle, - float sigma, - float* solidRadius, float* textureRadius) { - float circleR = circle.width() / 2.0f; - - - SkScalar sigmaToCircleRRatio = sigma / circleR; - - - - - sigmaToCircleRRatio = SkTMin(sigmaToCircleRRatio, 8.f); - SkFixed sigmaToCircleRRatioFixed; - static const SkScalar kHalfPlaneThreshold = 0.1f; - bool useHalfPlaneApprox = false; - if (sigmaToCircleRRatio <= kHalfPlaneThreshold) { - useHalfPlaneApprox = true; - sigmaToCircleRRatioFixed = 0; - *solidRadius = circleR - 3 * sigma; - *textureRadius = 6 * sigma; - } else { - - sigmaToCircleRRatioFixed = SkScalarToFixed(sigmaToCircleRRatio); - - - sigmaToCircleRRatioFixed &= ~0xff; - sigmaToCircleRRatio = SkFixedToScalar(sigmaToCircleRRatioFixed); - sigma = circleR * sigmaToCircleRRatio; - *solidRadius = 0; - *textureRadius = circleR + 3 * sigma; - } - - static const GrUniqueKey::Domain kDomain = GrUniqueKey::GenerateDomain(); - GrUniqueKey key; - GrUniqueKey::Builder builder(&key, kDomain, 1); - builder[0] = sigmaToCircleRRatioFixed; - builder.finish(); - - sk_sp<GrTextureProxy> blurProfile = resourceProvider->findProxyByUniqueKey(key); - if (!blurProfile) { - static constexpr int kProfileTextureWidth = 512; - GrSurfaceDesc texDesc; - texDesc.fWidth = kProfileTextureWidth; - texDesc.fHeight = 1; - texDesc.fConfig = kAlpha_8_GrPixelConfig; - - std::unique_ptr<uint8_t[]> profile(nullptr); - if (useHalfPlaneApprox) { - profile.reset(create_half_plane_profile(kProfileTextureWidth)); - } else { - - SkScalar scale = kProfileTextureWidth / *textureRadius; - profile.reset(create_circle_profile(sigma * scale, circleR * scale, - kProfileTextureWidth)); - } - - blurProfile = GrSurfaceProxy::MakeDeferred(resourceProvider, - texDesc, SkBudgeted::kYes, profile.get(), 0); - if (!blurProfile) { - return nullptr; - } - - resourceProvider->assignUniqueKeyToProxy(key, blurProfile.get()); - } - - return blurProfile; + const float tot = 2.f * make_unnormalized_half_kernel(halfKernel.get(), + halfKernelSize, sigma); + float sum = 0.f; + + for (int i = 0; i < halfKernelSize; ++i) { + halfKernel[halfKernelSize - i - 1] /= tot; + sum += halfKernel[halfKernelSize - i - 1]; + profile[profileWidth - i - 1] = SkUnitScalarClampToByte(sum); + } + + for (int i = 0; i < halfKernelSize; ++i) { + sum += halfKernel[i]; + profile[halfKernelSize - i - 1] = SkUnitScalarClampToByte(sum); + } + + profile[profileWidth - 1] = 0; + return profile; +} + +static sk_sp<GrTextureProxy> create_profile_texture( + GrResourceProvider* resourceProvider, const SkRect& circle, float sigma, + float* solidRadius, float* textureRadius) { + float circleR = circle.width() / 2.0f; + + SkScalar sigmaToCircleRRatio = sigma / circleR; + + sigmaToCircleRRatio = SkTMin(sigmaToCircleRRatio, 8.f); + SkFixed sigmaToCircleRRatioFixed; + static const SkScalar kHalfPlaneThreshold = 0.1f; + bool useHalfPlaneApprox = false; + if (sigmaToCircleRRatio <= kHalfPlaneThreshold) { + useHalfPlaneApprox = true; + sigmaToCircleRRatioFixed = 0; + *solidRadius = circleR - 3 * sigma; + *textureRadius = 6 * sigma; + } else { + sigmaToCircleRRatioFixed = SkScalarToFixed(sigmaToCircleRRatio); + + sigmaToCircleRRatioFixed &= ~0xff; + sigmaToCircleRRatio = SkFixedToScalar(sigmaToCircleRRatioFixed); + sigma = circleR * sigmaToCircleRRatio; + *solidRadius = 0; + *textureRadius = circleR + 3 * sigma; + } + + static const GrUniqueKey::Domain kDomain = GrUniqueKey::GenerateDomain(); + GrUniqueKey key; + GrUniqueKey::Builder builder(&key, kDomain, 1); + builder[0] = sigmaToCircleRRatioFixed; + builder.finish(); + + sk_sp<GrTextureProxy> blurProfile = + resourceProvider->findProxyByUniqueKey(key); + if (!blurProfile) { + static constexpr int kProfileTextureWidth = 512; + GrSurfaceDesc texDesc; + texDesc.fWidth = kProfileTextureWidth; + texDesc.fHeight = 1; + texDesc.fConfig = kAlpha_8_GrPixelConfig; + + std::unique_ptr<uint8_t[]> profile(nullptr); + if (useHalfPlaneApprox) { + profile.reset(create_half_plane_profile(kProfileTextureWidth)); + } else { + SkScalar scale = kProfileTextureWidth / *textureRadius; + profile.reset(create_circle_profile(sigma * scale, circleR * scale, + kProfileTextureWidth)); } - sk_sp<GrFragmentProcessor> GrCircleBlurFragmentProcessor::Make( - GrResourceProvider* resourceProvider, - const SkRect& circle, - float sigma) { - float solidRadius; - float textureRadius; - sk_sp<GrTextureProxy> profile(create_profile_texture(resourceProvider, circle, sigma, - &solidRadius, &textureRadius)); - if (!profile) { - return nullptr; - } - return sk_sp<GrFragmentProcessor>(new GrCircleBlurFragmentProcessor(circle, - textureRadius, - solidRadius, - std::move(profile), - resourceProvider)); + blurProfile = GrSurfaceProxy::MakeDeferred( + resourceProvider, texDesc, SkBudgeted::kYes, profile.get(), 0); + if (!blurProfile) { + return nullptr; } + + resourceProvider->assignUniqueKeyToProxy(key, blurProfile.get()); + } + + return blurProfile; +} + +sk_sp<GrFragmentProcessor> GrCircleBlurFragmentProcessor::Make( + GrResourceProvider* resourceProvider, const SkRect& circle, float sigma) { + float solidRadius; + float textureRadius; + sk_sp<GrTextureProxy> profile(create_profile_texture( + resourceProvider, circle, sigma, &solidRadius, &textureRadius)); + if (!profile) { + return nullptr; + } + return sk_sp<GrFragmentProcessor>( + new GrCircleBlurFragmentProcessor(circle, textureRadius, solidRadius, + std::move(profile), resourceProvider)); +} #include "glsl/GrGLSLColorSpaceXformHelper.h" #include "glsl/GrGLSLFragmentProcessor.h" #include "glsl/GrGLSLFragmentShaderBuilder.h" @@ -260,57 +234,83 @@ #include "SkSLCPP.h" #include "SkSLUtil.h" class GrGLSLCircleBlurFragmentProcessor : public GrGLSLFragmentProcessor { -public: - GrGLSLCircleBlurFragmentProcessor() {} - void emitCode(EmitArgs& args) override { - GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder; - const GrCircleBlurFragmentProcessor& _outer = args.fFp.cast<GrCircleBlurFragmentProcessor>(); - (void) _outer; - fCircleDataVar = args.fUniformHandler->addUniform(kFragment_GrShaderFlag, kVec4f_GrSLType, kDefault_GrSLPrecision, "circleData"); - fragBuilder->codeAppendf("vec2 vec = vec2((sk_FragCoord.x - %s.x) * %s.w, (sk_FragCoord.y - %s.y) * %s.w);\nfloat dist = length(vec) + (0.5 - %s.z) * %s.w;\n%s = %s * texture(%s, vec2(dist, 0.5)).%s.w;\n", args.fUniformHandler->getUniformCStr(fCircleDataVar), args.fUniformHandler->getUniformCStr(fCircleDataVar), args.fUniformHandler->getUniformCStr(fCircleDataVar), args.fUniformHandler->getUniformCStr(fCircleDataVar), args.fUniformHandler->getUniformCStr(fCircleDataVar), args.fUniformHandler->getUniformCStr(fCircleDataVar), args.fOutputColor, args.fInputColor ? args.fInputColor : "vec4(1)", fragBuilder->getProgramBuilder()->samplerVariable(args.fTexSamplers[0]).c_str(), fragBuilder->getProgramBuilder()->samplerSwizzle(args.fTexSamplers[0]).c_str()); - } -private: - void onSetData(const GrGLSLProgramDataManager& data, const GrFragmentProcessor& _proc) override { - const GrCircleBlurFragmentProcessor& _outer = _proc.cast<GrCircleBlurFragmentProcessor>(); - auto circleRect = _outer.circleRect(); - (void) circleRect; - auto textureRadius = _outer.textureRadius(); - (void) textureRadius; - auto solidRadius = _outer.solidRadius(); - (void) solidRadius; - UniformHandle& blurProfileSampler = fBlurProfileSamplerVar; - (void) blurProfileSampler; - UniformHandle& circleData = fCircleDataVar; - (void) circleData; - - data.set4f(circleData, circleRect.centerX(), circleRect.centerY(), solidRadius, - 1.f / textureRadius); - } - UniformHandle fCircleDataVar; - UniformHandle fBlurProfileSamplerVar; + public: + GrGLSLCircleBlurFragmentProcessor() {} + void emitCode(EmitArgs& args) override { + GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder; + const GrCircleBlurFragmentProcessor& _outer = + args.fFp.cast<GrCircleBlurFragmentProcessor>(); + (void)_outer; + fCircleDataVar = args.fUniformHandler->addUniform( + kFragment_GrShaderFlag, kVec4f_GrSLType, kDefault_GrSLPrecision, + "circleData"); + fragBuilder->codeAppendf( + "vec2 vec = vec2((sk_FragCoord.x - %s.x) * %s.w, (sk_FragCoord.y - " + "%s.y) * %s.w);\nfloat dist = length(vec) + (0.5 - %s.z) * %s.w;\n%s = " + "%s * texture(%s, vec2(dist, 0.5)).%s.w;\n", + args.fUniformHandler->getUniformCStr(fCircleDataVar), + args.fUniformHandler->getUniformCStr(fCircleDataVar), + args.fUniformHandler->getUniformCStr(fCircleDataVar), + args.fUniformHandler->getUniformCStr(fCircleDataVar), + args.fUniformHandler->getUniformCStr(fCircleDataVar), + args.fUniformHandler->getUniformCStr(fCircleDataVar), args.fOutputColor, + args.fInputColor ? args.fInputColor : "vec4(1)", + fragBuilder->getProgramBuilder() + ->samplerVariable(args.fTexSamplers[0]) + .c_str(), + fragBuilder->getProgramBuilder() + ->samplerSwizzle(args.fTexSamplers[0]) + .c_str()); + } + + private: + void onSetData(const GrGLSLProgramDataManager& data, + const GrFragmentProcessor& _proc) override { + const GrCircleBlurFragmentProcessor& _outer = + _proc.cast<GrCircleBlurFragmentProcessor>(); + auto circleRect = _outer.circleRect(); + (void)circleRect; + auto textureRadius = _outer.textureRadius(); + (void)textureRadius; + auto solidRadius = _outer.solidRadius(); + (void)solidRadius; + UniformHandle& blurProfileSampler = fBlurProfileSamplerVar; + (void)blurProfileSampler; + UniformHandle& circleData = fCircleDataVar; + (void)circleData; + + data.set4f(circleData, circleRect.centerX(), circleRect.centerY(), + solidRadius, 1.f / textureRadius); + } + UniformHandle fCircleDataVar; + UniformHandle fBlurProfileSamplerVar; }; -GrGLSLFragmentProcessor* GrCircleBlurFragmentProcessor::onCreateGLSLInstance() const { - return new GrGLSLCircleBlurFragmentProcessor(); +GrGLSLFragmentProcessor* GrCircleBlurFragmentProcessor::onCreateGLSLInstance() + const { + return new GrGLSLCircleBlurFragmentProcessor(); } -void GrCircleBlurFragmentProcessor::onGetGLSLProcessorKey(const GrShaderCaps& caps, GrProcessorKeyBuilder* b) const { -} -bool GrCircleBlurFragmentProcessor::onIsEqual(const GrFragmentProcessor& other) const { - const GrCircleBlurFragmentProcessor& that = other.cast<GrCircleBlurFragmentProcessor>(); - (void) that; - if (fCircleRect != that.fCircleRect) return false; - if (fTextureRadius != that.fTextureRadius) return false; - if (fSolidRadius != that.fSolidRadius) return false; - if (fBlurProfileSampler != that.fBlurProfileSampler) return false; - return true; +void GrCircleBlurFragmentProcessor::onGetGLSLProcessorKey( + const GrShaderCaps& caps, GrProcessorKeyBuilder* b) const {} +bool GrCircleBlurFragmentProcessor::onIsEqual( + const GrFragmentProcessor& other) const { + const GrCircleBlurFragmentProcessor& that = + other.cast<GrCircleBlurFragmentProcessor>(); + (void)that; + if (fCircleRect != that.fCircleRect) return false; + if (fTextureRadius != that.fTextureRadius) return false; + if (fSolidRadius != that.fSolidRadius) return false; + if (fBlurProfileSampler != that.fBlurProfileSampler) return false; + return true; } GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrCircleBlurFragmentProcessor); #if GR_TEST_UTILS -sk_sp<GrFragmentProcessor> GrCircleBlurFragmentProcessor::TestCreate(GrProcessorTestData* testData) { - - SkScalar wh = testData->fRandom->nextRangeScalar(100.f, 1000.f); - SkScalar sigma = testData->fRandom->nextRangeF(1.f,10.f); - SkRect circle = SkRect::MakeWH(wh, wh); - return GrCircleBlurFragmentProcessor::Make(testData->resourceProvider(), circle, sigma); +sk_sp<GrFragmentProcessor> GrCircleBlurFragmentProcessor::TestCreate( + GrProcessorTestData* testData) { + SkScalar wh = testData->fRandom->nextRangeScalar(100.f, 1000.f); + SkScalar sigma = testData->fRandom->nextRangeF(1.f, 10.f); + SkRect circle = SkRect::MakeWH(wh, wh); + return GrCircleBlurFragmentProcessor::Make(testData->resourceProvider(), + circle, sigma); } #endif #endif |