The Tor Browser: gfx/skia/trunk/src/gpu/gl/GrGLProgram.cpp@129ffea94266 (annotated)

gfx/skia/trunk/src/gpu/gl/GrGLProgram.cpp@129ffea94266 (annotated)

gfx/skia/trunk/src/gpu/gl/GrGLProgram.cpp

Sat, 03 Jan 2015 20:18:00 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Sat, 03 Jan 2015 20:18:00 +0100
branch: TOR_BUG_3246
changeset 7: 129ffea94266
permissions: -rw-r--r--

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "GrGLProgram.h"
 #include "GrAllocator.h"
 #include "GrEffect.h"
 #include "GrCoordTransform.h"
 #include "GrDrawEffect.h"
 #include "GrGLEffect.h"
 #include "GrGpuGL.h"
 #include "GrGLShaderVar.h"
 #include "GrGLSL.h"
 #include "SkXfermode.h"
 #define GL_CALL(X) GR_GL_CALL(fGpu->glInterface(), X)
 #define GL_CALL_RET(R, X) GR_GL_CALL_RET(fGpu->glInterface(), R, X)
 GrGLProgram* GrGLProgram::Create(GrGpuGL* gpu,
                                  const GrGLProgramDesc& desc,
                                  const GrEffectStage* colorStages[],
                                  const GrEffectStage* coverageStages[]) {
     GrGLProgram* program = SkNEW_ARGS(GrGLProgram, (gpu, desc, colorStages, coverageStages));
     if (!program->succeeded()) {
         delete program;
         program = NULL;
     }
     return program;
 }
 GrGLProgram::GrGLProgram(GrGpuGL* gpu,
                          const GrGLProgramDesc& desc,
                          const GrEffectStage* colorStages[],
                          const GrEffectStage* coverageStages[])
 : fGpu(gpu)
 , fUniformManager(gpu)
 , fHasVertexShader(false)
 , fNumTexCoordSets(0) {
     fDesc = desc;
     fProgramID = 0;
     fDstCopyTexUnit = -1;
     fColor = GrColor_ILLEGAL;
     if (fDesc.getHeader().fHasVertexCode ||
         !fGpu->shouldUseFixedFunctionTexturing()) {
         GrGLFullShaderBuilder fullBuilder(fGpu, fUniformManager, fDesc);
         if (this->genProgram(&fullBuilder, colorStages, coverageStages)) {
             fUniformHandles.fViewMatrixUni = fullBuilder.getViewMatrixUniform();
             fHasVertexShader = true;
         }
     } else {
         GrGLFragmentOnlyShaderBuilder fragmentOnlyBuilder(fGpu, fUniformManager, fDesc);
         if (this->genProgram(&fragmentOnlyBuilder, colorStages, coverageStages)) {
             fNumTexCoordSets = fragmentOnlyBuilder.getNumTexCoordSets();
         }
     }
 }
 GrGLProgram::~GrGLProgram() {
     if (fProgramID) {
         GL_CALL(DeleteProgram(fProgramID));
     }
 }
 void GrGLProgram::abandon() {
     fProgramID = 0;
 }
 void GrGLProgram::overrideBlend(GrBlendCoeff* srcCoeff,
                                 GrBlendCoeff* dstCoeff) const {
     switch (fDesc.getHeader().fCoverageOutput) {
         case GrGLProgramDesc::kModulate_CoverageOutput:
             break;
         // The prog will write a coverage value to the secondary
         // output and the dst is blended by one minus that value.
         case GrGLProgramDesc::kSecondaryCoverage_CoverageOutput:
         case GrGLProgramDesc::kSecondaryCoverageISA_CoverageOutput:
         case GrGLProgramDesc::kSecondaryCoverageISC_CoverageOutput:
             *dstCoeff = (GrBlendCoeff)GrGpu::kIS2C_GrBlendCoeff;
             break;
         case GrGLProgramDesc::kCombineWithDst_CoverageOutput:
             // We should only have set this if the blend was specified as (1, 0)
             SkASSERT(kOne_GrBlendCoeff == *srcCoeff && kZero_GrBlendCoeff == *dstCoeff);
             break;
         default:
             GrCrash("Unexpected coverage output");
             break;
     }
 }
 bool GrGLProgram::genProgram(GrGLShaderBuilder* builder,
                              const GrEffectStage* colorStages[],
                              const GrEffectStage* coverageStages[]) {
     SkASSERT(0 == fProgramID);
     const GrGLProgramDesc::KeyHeader& header = fDesc.getHeader();
     // incoming color to current stage being processed.
     GrGLSLExpr4 inColor = builder->getInputColor();
     fColorEffects.reset(
         builder->createAndEmitEffects(colorStages,
                                       fDesc.effectKeys(),
                                       fDesc.numColorEffects(),
                                       &inColor));
     ///////////////////////////////////////////////////////////////////////////
     // compute the partial coverage
     GrGLSLExpr4 inCoverage = builder->getInputCoverage();
     fCoverageEffects.reset(
         builder->createAndEmitEffects(coverageStages,
                                       fDesc.getEffectKeys() + fDesc.numColorEffects(),
                                       fDesc.numCoverageEffects(),
                                       &inCoverage));
     if (GrGLProgramDesc::CoverageOutputUsesSecondaryOutput(header.fCoverageOutput)) {
         const char* secondaryOutputName = builder->enableSecondaryOutput();
         // default coeff to ones for kCoverage_DualSrcOutput
         GrGLSLExpr4 coeff(1);
         if (GrGLProgramDesc::kSecondaryCoverageISA_CoverageOutput == header.fCoverageOutput) {
             // Get (1-A) into coeff
             coeff = GrGLSLExpr4::VectorCast(GrGLSLExpr1(1) - inColor.a());
         } else if (GrGLProgramDesc::kSecondaryCoverageISC_CoverageOutput == header.fCoverageOutput) {
             // Get (1-RGBA) into coeff
             coeff = GrGLSLExpr4(1) - inColor;
         }
         // Get coeff * coverage into modulate and then write that to the dual source output.
         builder->fsCodeAppendf("\t%s = %s;\n", secondaryOutputName, (coeff * inCoverage).c_str());
     }
     ///////////////////////////////////////////////////////////////////////////
     // combine color and coverage as frag color
     // Get "color * coverage" into fragColor
     GrGLSLExpr4 fragColor = inColor * inCoverage;
     // Now tack on "+(1-coverage)dst onto the frag color if we were asked to do so.
     if (GrGLProgramDesc::kCombineWithDst_CoverageOutput == header.fCoverageOutput) {
         GrGLSLExpr4 dstCoeff = GrGLSLExpr4(1) - inCoverage;
         GrGLSLExpr4 dstContribution = dstCoeff * GrGLSLExpr4(builder->dstColor());
         fragColor = fragColor + dstContribution;
     }
     builder->fsCodeAppendf("\t%s = %s;\n", builder->getColorOutputName(), fragColor.c_str());
     if (!builder->finish(&fProgramID)) {
         return false;
     }
     fUniformHandles.fRTHeightUni = builder->getRTHeightUniform();
     fUniformHandles.fDstCopyTopLeftUni = builder->getDstCopyTopLeftUniform();
     fUniformHandles.fDstCopyScaleUni = builder->getDstCopyScaleUniform();
     fUniformHandles.fColorUni = builder->getColorUniform();
     fUniformHandles.fCoverageUni = builder->getCoverageUniform();
     fUniformHandles.fDstCopySamplerUni = builder->getDstCopySamplerUniform();
     // This must be called after we set fDstCopySamplerUni above.
     this->initSamplerUniforms();
     return true;
 }
 void GrGLProgram::initSamplerUniforms() {
     GL_CALL(UseProgram(fProgramID));
     GrGLint texUnitIdx = 0;
     if (fUniformHandles.fDstCopySamplerUni.isValid()) {
         fUniformManager.setSampler(fUniformHandles.fDstCopySamplerUni, texUnitIdx);
         fDstCopyTexUnit = texUnitIdx++;
     }
     fColorEffects->initSamplers(fUniformManager, &texUnitIdx);
     fCoverageEffects->initSamplers(fUniformManager, &texUnitIdx);
 }
 ///////////////////////////////////////////////////////////////////////////////
 void GrGLProgram::setData(GrDrawState::BlendOptFlags blendOpts,
                           const GrEffectStage* colorStages[],
                           const GrEffectStage* coverageStages[],
                           const GrDeviceCoordTexture* dstCopy,
                           SharedGLState* sharedState) {
     const GrDrawState& drawState = fGpu->getDrawState();
     GrColor color;
     GrColor coverage;
     if (blendOpts & GrDrawState::kEmitTransBlack_BlendOptFlag) {
         color = 0;
         coverage = 0;
     } else if (blendOpts & GrDrawState::kEmitCoverage_BlendOptFlag) {
         color = 0xffffffff;
         coverage = drawState.getCoverageColor();
     } else {
         color = drawState.getColor();
         coverage = drawState.getCoverageColor();
     }
     this->setColor(drawState, color, sharedState);
     this->setCoverage(drawState, coverage, sharedState);
     this->setMatrixAndRenderTargetHeight(drawState);
     if (NULL != dstCopy) {
         if (fUniformHandles.fDstCopyTopLeftUni.isValid()) {
             fUniformManager.set2f(fUniformHandles.fDstCopyTopLeftUni,
                                   static_cast<GrGLfloat>(dstCopy->offset().fX),
                                   static_cast<GrGLfloat>(dstCopy->offset().fY));
             fUniformManager.set2f(fUniformHandles.fDstCopyScaleUni,
 .f / dstCopy->texture()->width(),
 .f / dstCopy->texture()->height());
             GrGLTexture* texture = static_cast<GrGLTexture*>(dstCopy->texture());
             static GrTextureParams kParams; // the default is clamp, nearest filtering.
             fGpu->bindTexture(fDstCopyTexUnit, kParams, texture);
         } else {
             SkASSERT(!fUniformHandles.fDstCopyScaleUni.isValid());
             SkASSERT(!fUniformHandles.fDstCopySamplerUni.isValid());
         }
     } else {
         SkASSERT(!fUniformHandles.fDstCopyTopLeftUni.isValid());
         SkASSERT(!fUniformHandles.fDstCopyScaleUni.isValid());
         SkASSERT(!fUniformHandles.fDstCopySamplerUni.isValid());
     }
     fColorEffects->setData(fGpu, fUniformManager, colorStages);
     fCoverageEffects->setData(fGpu, fUniformManager, coverageStages);
     // TexGen state applies to the the fixed function vertex shader. For custom shaders, it's
     // ignored, so we don't need to change the texgen settings in that case.
     if (!fHasVertexShader) {
         fGpu->flushTexGenSettings(fNumTexCoordSets);
     }
 }
 void GrGLProgram::setColor(const GrDrawState& drawState,
                            GrColor color,
                            SharedGLState* sharedState) {
     const GrGLProgramDesc::KeyHeader& header = fDesc.getHeader();
     if (!drawState.hasColorVertexAttribute()) {
         switch (header.fColorInput) {
             case GrGLProgramDesc::kAttribute_ColorInput:
                 SkASSERT(-1 != header.fColorAttributeIndex);
                 if (sharedState->fConstAttribColor != color ||
                     sharedState->fConstAttribColorIndex != header.fColorAttributeIndex) {
                     // OpenGL ES only supports the float varieties of glVertexAttrib
                     GrGLfloat c[4];
                     GrColorToRGBAFloat(color, c);
                     GL_CALL(VertexAttrib4fv(header.fColorAttributeIndex, c));
                     sharedState->fConstAttribColor = color;
                     sharedState->fConstAttribColorIndex = header.fColorAttributeIndex;
                 }
                 break;
             case GrGLProgramDesc::kUniform_ColorInput:
                 if (fColor != color && fUniformHandles.fColorUni.isValid()) {
                     // OpenGL ES doesn't support unsigned byte varieties of glUniform
                     GrGLfloat c[4];
                     GrColorToRGBAFloat(color, c);
                     fUniformManager.set4fv(fUniformHandles.fColorUni, 1, c);
                     fColor = color;
                 }
                 sharedState->fConstAttribColorIndex = -1;
                 break;
             case GrGLProgramDesc::kSolidWhite_ColorInput:
             case GrGLProgramDesc::kTransBlack_ColorInput:
                 sharedState->fConstAttribColorIndex = -1;
                 break;
             default:
                 GrCrash("Unknown color type.");
         }
     } else {
         sharedState->fConstAttribColorIndex = -1;
     }
 }
 void GrGLProgram::setCoverage(const GrDrawState& drawState,
                               GrColor coverage,
                               SharedGLState* sharedState) {
     const GrGLProgramDesc::KeyHeader& header = fDesc.getHeader();
     if (!drawState.hasCoverageVertexAttribute()) {
         switch (header.fCoverageInput) {
             case GrGLProgramDesc::kAttribute_ColorInput:
                 if (sharedState->fConstAttribCoverage != coverage ||
                     sharedState->fConstAttribCoverageIndex != header.fCoverageAttributeIndex) {
                     // OpenGL ES only supports the float varieties of  glVertexAttrib
                     GrGLfloat c[4];
                     GrColorToRGBAFloat(coverage, c);
                     GL_CALL(VertexAttrib4fv(header.fCoverageAttributeIndex, c));
                     sharedState->fConstAttribCoverage = coverage;
                     sharedState->fConstAttribCoverageIndex = header.fCoverageAttributeIndex;
                 }
                 break;
             case GrGLProgramDesc::kUniform_ColorInput:
                 if (fCoverage != coverage) {
                     // OpenGL ES doesn't support unsigned byte varieties of glUniform
                     GrGLfloat c[4];
                     GrColorToRGBAFloat(coverage, c);
                     fUniformManager.set4fv(fUniformHandles.fCoverageUni, 1, c);
                     fCoverage = coverage;
                 }
                 sharedState->fConstAttribCoverageIndex = -1;
                 break;
             case GrGLProgramDesc::kSolidWhite_ColorInput:
             case GrGLProgramDesc::kTransBlack_ColorInput:
                 sharedState->fConstAttribCoverageIndex = -1;
                 break;
             default:
                 GrCrash("Unknown coverage type.");
         }
     } else {
         sharedState->fConstAttribCoverageIndex = -1;
     }
 }
 void GrGLProgram::setMatrixAndRenderTargetHeight(const GrDrawState& drawState) {
     const GrRenderTarget* rt = drawState.getRenderTarget();
     SkISize size;
     size.set(rt->width(), rt->height());
     // Load the RT height uniform if it is needed to y-flip gl_FragCoord.
     if (fUniformHandles.fRTHeightUni.isValid() &&
         fMatrixState.fRenderTargetSize.fHeight != size.fHeight) {
         fUniformManager.set1f(fUniformHandles.fRTHeightUni, SkIntToScalar(size.fHeight));
     }
     if (!fHasVertexShader) {
         SkASSERT(!fUniformHandles.fViewMatrixUni.isValid());
         fGpu->setProjectionMatrix(drawState.getViewMatrix(), size, rt->origin());
     } else if (fMatrixState.fRenderTargetOrigin != rt->origin() ||
                fMatrixState.fRenderTargetSize != size ||
                !fMatrixState.fViewMatrix.cheapEqualTo(drawState.getViewMatrix())) {
         SkASSERT(fUniformHandles.fViewMatrixUni.isValid());
         fMatrixState.fViewMatrix = drawState.getViewMatrix();
         fMatrixState.fRenderTargetSize = size;
         fMatrixState.fRenderTargetOrigin = rt->origin();
         GrGLfloat viewMatrix[3 * 3];
         fMatrixState.getGLMatrix<3>(viewMatrix);
         fUniformManager.setMatrix3f(fUniformHandles.fViewMatrixUni, viewMatrix);
     }
 }

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gfx/skia/trunk/src/gpu/gl/GrGLProgram.cpp@129ffea94266 (annotated)

gfx/skia/trunk/src/gpu/gl/GrGLProgram.cpp