| /* |
| * Copyright 2013 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "GrBitmapTextGeoProc.h" |
| #include "GrInvariantOutput.h" |
| #include "GrTexture.h" |
| #include "glsl/GrGLSLFragmentShaderBuilder.h" |
| #include "glsl/GrGLSLGeometryProcessor.h" |
| #include "glsl/GrGLSLProgramDataManager.h" |
| #include "glsl/GrGLSLUniformHandler.h" |
| #include "glsl/GrGLSLVarying.h" |
| #include "glsl/GrGLSLVertexShaderBuilder.h" |
| |
| class GrGLBitmapTextGeoProc : public GrGLSLGeometryProcessor { |
| public: |
| GrGLBitmapTextGeoProc() : fColor(GrColor_ILLEGAL) {} |
| |
| void onEmitCode(EmitArgs& args, GrGPArgs* gpArgs) override { |
| const GrBitmapTextGeoProc& cte = args.fGP.cast<GrBitmapTextGeoProc>(); |
| |
| GrGLSLVertexBuilder* vertBuilder = args.fVertBuilder; |
| GrGLSLVaryingHandler* varyingHandler = args.fVaryingHandler; |
| GrGLSLUniformHandler* uniformHandler = args.fUniformHandler; |
| |
| // emit attributes |
| varyingHandler->emitAttributes(cte); |
| |
| // compute numbers to be hardcoded to convert texture coordinates from int to float |
| SkASSERT(cte.numTextureSamplers() == 1); |
| SkDEBUGCODE(GrTexture* atlas = cte.textureSampler(0).texture()); |
| SkASSERT(atlas && SkIsPow2(atlas->width()) && SkIsPow2(atlas->height())); |
| |
| GrGLSLVertToFrag v(kVec2f_GrSLType); |
| varyingHandler->addVarying("TextureCoords", &v, kHigh_GrSLPrecision); |
| vertBuilder->codeAppendf("%s = %s;", v.vsOut(), |
| cte.inTextureCoords()->fName); |
| |
| GrGLSLPPFragmentBuilder* fragBuilder = args.fFragBuilder; |
| // Setup pass through color |
| if (cte.hasVertexColor()) { |
| varyingHandler->addPassThroughAttribute(cte.inColor(), args.fOutputColor); |
| } else { |
| this->setupUniformColor(fragBuilder, uniformHandler, args.fOutputColor, |
| &fColorUniform); |
| } |
| |
| // Setup position |
| this->setupPosition(vertBuilder, gpArgs, cte.inPosition()->fName); |
| |
| // emit transforms |
| this->emitTransforms(vertBuilder, |
| varyingHandler, |
| uniformHandler, |
| gpArgs->fPositionVar, |
| cte.inPosition()->fName, |
| cte.localMatrix(), |
| args.fFPCoordTransformHandler); |
| |
| if (cte.maskFormat() == kARGB_GrMaskFormat) { |
| fragBuilder->codeAppendf("%s = ", args.fOutputColor); |
| fragBuilder->appendTextureLookupAndModulate(args.fOutputColor, |
| args.fTexSamplers[0], |
| v.fsIn(), |
| kVec2f_GrSLType); |
| fragBuilder->codeAppend(";"); |
| fragBuilder->codeAppendf("%s = vec4(1);", args.fOutputCoverage); |
| } else { |
| fragBuilder->codeAppendf("%s = ", args.fOutputCoverage); |
| fragBuilder->appendTextureLookup(args.fTexSamplers[0], v.fsIn(), kVec2f_GrSLType); |
| fragBuilder->codeAppend(";"); |
| if (cte.maskFormat() == kA565_GrMaskFormat) { |
| // set alpha to be max of rgb coverage |
| fragBuilder->codeAppendf("%s.a = max(max(%s.r, %s.g), %s.b);", |
| args.fOutputCoverage, args.fOutputCoverage, |
| args.fOutputCoverage, args.fOutputCoverage); |
| } |
| } |
| } |
| |
| void setData(const GrGLSLProgramDataManager& pdman, const GrPrimitiveProcessor& gp, |
| FPCoordTransformIter&& transformIter) override { |
| const GrBitmapTextGeoProc& btgp = gp.cast<GrBitmapTextGeoProc>(); |
| if (btgp.color() != fColor && !btgp.hasVertexColor()) { |
| float c[4]; |
| GrColorToRGBAFloat(btgp.color(), c); |
| pdman.set4fv(fColorUniform, 1, c); |
| fColor = btgp.color(); |
| } |
| this->setTransformDataHelper(btgp.localMatrix(), pdman, &transformIter); |
| } |
| |
| static inline void GenKey(const GrGeometryProcessor& proc, |
| const GrShaderCaps&, |
| GrProcessorKeyBuilder* b) { |
| const GrBitmapTextGeoProc& gp = proc.cast<GrBitmapTextGeoProc>(); |
| uint32_t key = 0; |
| key |= (gp.usesLocalCoords() && gp.localMatrix().hasPerspective()) ? 0x1 : 0x0; |
| key |= gp.maskFormat() << 1; |
| b->add32(key); |
| |
| // Currently we hardcode numbers to convert atlas coordinates to normalized floating point |
| SkASSERT(gp.numTextureSamplers() == 1); |
| GrTexture* atlas = gp.textureSampler(0).texture(); |
| SkASSERT(atlas); |
| b->add32(atlas->width()); |
| b->add32(atlas->height()); |
| } |
| |
| private: |
| GrColor fColor; |
| UniformHandle fColorUniform; |
| |
| typedef GrGLSLGeometryProcessor INHERITED; |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| GrBitmapTextGeoProc::GrBitmapTextGeoProc(GrColor color, GrTexture* texture, |
| const GrSamplerParams& params, GrMaskFormat format, |
| const SkMatrix& localMatrix, bool usesLocalCoords) |
| : fColor(color) |
| , fLocalMatrix(localMatrix) |
| , fUsesLocalCoords(usesLocalCoords) |
| , fTextureSampler(texture, params) |
| , fInColor(nullptr) |
| , fMaskFormat(format) { |
| this->initClassID<GrBitmapTextGeoProc>(); |
| fInPosition = &this->addVertexAttrib("inPosition", kVec2f_GrVertexAttribType); |
| |
| bool hasVertexColor = kA8_GrMaskFormat == fMaskFormat || |
| kA565_GrMaskFormat == fMaskFormat; |
| if (hasVertexColor) { |
| fInColor = &this->addVertexAttrib("inColor", kVec4ub_GrVertexAttribType); |
| } |
| fInTextureCoords = &this->addVertexAttrib("inTextureCoords", kVec2us_GrVertexAttribType, |
| kHigh_GrSLPrecision); |
| this->addTextureSampler(&fTextureSampler); |
| } |
| |
| void GrBitmapTextGeoProc::getGLSLProcessorKey(const GrShaderCaps& caps, |
| GrProcessorKeyBuilder* b) const { |
| GrGLBitmapTextGeoProc::GenKey(*this, caps, b); |
| } |
| |
| GrGLSLPrimitiveProcessor* GrBitmapTextGeoProc::createGLSLInstance(const GrShaderCaps& caps) const { |
| return new GrGLBitmapTextGeoProc(); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| GR_DEFINE_GEOMETRY_PROCESSOR_TEST(GrBitmapTextGeoProc); |
| |
| #if GR_TEST_UTILS |
| sk_sp<GrGeometryProcessor> GrBitmapTextGeoProc::TestCreate(GrProcessorTestData* d) { |
| int texIdx = d->fRandom->nextBool() ? GrProcessorUnitTest::kSkiaPMTextureIdx |
| : GrProcessorUnitTest::kAlphaTextureIdx; |
| static const SkShader::TileMode kTileModes[] = { |
| SkShader::kClamp_TileMode, |
| SkShader::kRepeat_TileMode, |
| SkShader::kMirror_TileMode, |
| }; |
| SkShader::TileMode tileModes[] = { |
| kTileModes[d->fRandom->nextULessThan(SK_ARRAY_COUNT(kTileModes))], |
| kTileModes[d->fRandom->nextULessThan(SK_ARRAY_COUNT(kTileModes))], |
| }; |
| GrSamplerParams params(tileModes, d->fRandom->nextBool() ? GrSamplerParams::kBilerp_FilterMode |
| : GrSamplerParams::kNone_FilterMode); |
| |
| GrMaskFormat format = kARGB_GrMaskFormat; // init to avoid warning |
| switch (d->fRandom->nextULessThan(3)) { |
| case 0: |
| format = kA8_GrMaskFormat; |
| break; |
| case 1: |
| format = kA565_GrMaskFormat; |
| break; |
| case 2: |
| format = kARGB_GrMaskFormat; |
| break; |
| } |
| |
| return GrBitmapTextGeoProc::Make(GrRandomColor(d->fRandom), d->fTextures[texIdx], params, |
| format, GrTest::TestMatrix(d->fRandom), |
| d->fRandom->nextBool()); |
| } |
| #endif |