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

gfx/skia/trunk/src/gpu/gl/GrGLProgramEffects.h@129ffea94266 (annotated)

gfx/skia/trunk/src/gpu/gl/GrGLProgramEffects.h

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 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #ifndef GrGLProgramEffects_DEFINED
 #define GrGLProgramEffects_DEFINED
 #include "GrBackendEffectFactory.h"
 #include "GrTexture.h"
 #include "GrTextureAccess.h"
 #include "GrGLUniformManager.h"
 class GrEffectStage;
 class GrGLVertexProgramEffectsBuilder;
 class GrGLShaderBuilder;
 class GrGLFullShaderBuilder;
 class GrGLFragmentOnlyShaderBuilder;
 /**
  * This class encapsulates an array of GrGLEffects and their supporting data (coord transforms
  * and textures). It is built with GrGLProgramEffectsBuilder, then used to manage the necessary GL
  * state and shader uniforms.
  */
 class GrGLProgramEffects {
 public:
     typedef GrBackendEffectFactory::EffectKey EffectKey;
     typedef GrGLUniformManager::UniformHandle UniformHandle;
     /**
      * These methods generate different portions of an effect's final key.
      */
     static EffectKey GenAttribKey(const GrDrawEffect&);
     static EffectKey GenTransformKey(const GrDrawEffect&);
     static EffectKey GenTextureKey(const GrDrawEffect&, const GrGLCaps&);
     virtual ~GrGLProgramEffects();
     /**
      * Assigns a texture unit to each sampler. It starts on *texUnitIdx and writes the next
      * available unit to *texUnitIdx when it returns.
      */
     void initSamplers(const GrGLUniformManager&, int* texUnitIdx);
     /**
      * Calls setData() on each effect, and sets their transformation matrices and texture bindings.
      */
     virtual void setData(GrGpuGL*,
                          const GrGLUniformManager&,
                          const GrEffectStage* effectStages[]) = 0;
     /**
      * Passed to GrGLEffects so they can add transformed coordinates to their shader code.
      */
     class TransformedCoords {
     public:
         TransformedCoords(const SkString& name, GrSLType type)
             : fName(name), fType(type) {
         }
         const char* c_str() const { return fName.c_str(); }
         GrSLType type() const { return fType; }
         const SkString& getName() const { return fName; }
     private:
         SkString fName;
         GrSLType fType;
     };
     typedef SkTArray<TransformedCoords> TransformedCoordsArray;
     /**
      * Passed to GrGLEffects so they can add texture reads to their shader code.
      */
     class TextureSampler {
     public:
         TextureSampler(UniformHandle uniform, const GrTextureAccess& access)
             : fSamplerUniform(uniform)
             , fConfigComponentMask(GrPixelConfigComponentMask(access.getTexture()->config())) {
             SkASSERT(0 != fConfigComponentMask);
             memcpy(fSwizzle, access.getSwizzle(), 5);
         }
         UniformHandle samplerUniform() const { return fSamplerUniform; }
         // bitfield of GrColorComponentFlags present in the texture's config.
         uint32_t configComponentMask() const { return fConfigComponentMask; }
         const char* swizzle() const { return fSwizzle; }
     private:
         UniformHandle fSamplerUniform;
         uint32_t      fConfigComponentMask;
         char          fSwizzle[5];
     };
     typedef SkTArray<TextureSampler> TextureSamplerArray;
 protected:
     GrGLProgramEffects(int reserveCount)
         : fGLEffects(reserveCount)
         , fSamplers(reserveCount) {
     }
     /**
      * Helper for emitEffect() in a subclasses. Emits uniforms for an effect's texture accesses and
      * appends the necessary data to the TextureSamplerArray* object so effects can add texture
      * lookups to their code. This method is only meant to be called during the construction phase.
      */
     void emitSamplers(GrGLShaderBuilder*, const GrEffectRef&, TextureSamplerArray*);
     /**
      * Helper for setData(). Binds all the textures for an effect.
      */
     void bindTextures(GrGpuGL*, const GrEffectRef&, int effectIdx);
     struct Sampler {
         SkDEBUGCODE(Sampler() : fTextureUnit(-1) {})
         UniformHandle fUniform;
         int           fTextureUnit;
     };
     SkTArray<GrGLEffect*>                  fGLEffects;
     SkTArray<SkSTArray<4, Sampler, true> > fSamplers;
 };
 /**
  * This is an abstract base class for constructing different types of GrGLProgramEffects objects.
  */
 class GrGLProgramEffectsBuilder {
 public:
     virtual ~GrGLProgramEffectsBuilder() { }
     /**
      * Emits the effect's shader code, and stores the necessary uniforms internally.
      */
     virtual void emitEffect(const GrEffectStage&,
                             GrGLProgramEffects::EffectKey,
                             const char* outColor,
                             const char* inColor,
                             int stageIndex) = 0;
 };
 ////////////////////////////////////////////////////////////////////////////////
 /**
  * This is a GrGLProgramEffects implementation that does coord transforms with the vertex shader.
  */
 class GrGLVertexProgramEffects : public GrGLProgramEffects {
 public:
     virtual void setData(GrGpuGL*,
                          const GrGLUniformManager&,
                          const GrEffectStage* effectStages[]) SK_OVERRIDE;
 private:
     friend class GrGLVertexProgramEffectsBuilder;
     GrGLVertexProgramEffects(int reserveCount, bool explicitLocalCoords)
         : INHERITED(reserveCount)
         , fTransforms(reserveCount)
         , fHasExplicitLocalCoords(explicitLocalCoords) {
     }
     /**
      * Helper for GrGLProgramEffectsBuilder::emitEfffect(). This method is meant to only be called
      * during the construction phase.
      */
     void emitEffect(GrGLFullShaderBuilder*,
                     const GrEffectStage&,
                     GrGLProgramEffects::EffectKey,
                     const char* outColor,
                     const char* inColor,
                     int stageIndex);
     /**
      * Helper for emitEffect(). Emits any attributes an effect may have.
      */
     void emitAttributes(GrGLFullShaderBuilder*, const GrEffectStage&);
     /**
      * Helper for emitEffect(). Emits code to implement an effect's coord transforms in the VS.
      * Varyings are added as an outputs of the VS and inputs to the FS. The varyings may be either a
      * vec2f or vec3f depending upon whether perspective interpolation is required or not. The names
      * of the varyings in the VS and FS as well their types are appended to the
      * TransformedCoordsArray* object, which is in turn passed to the effect's emitCode() function.
      */
     void emitTransforms(GrGLFullShaderBuilder*,
                         const GrEffectRef&,
                         EffectKey,
                         TransformedCoordsArray*);
     /**
      * Helper for setData(). Sets all the transform matrices for an effect.
      */
     void setTransformData(const GrGLUniformManager&, const GrDrawEffect&, int effectIdx);
     struct Transform {
         Transform() { fCurrentValue = SkMatrix::InvalidMatrix(); }
         UniformHandle fHandle;
         GrSLType      fType;
         SkMatrix      fCurrentValue;
     };
     SkTArray<SkSTArray<2, Transform, true> > fTransforms;
     bool                                     fHasExplicitLocalCoords;
     typedef GrGLProgramEffects INHERITED;
 };
 /**
  * This class is used to construct a GrGLVertexProgramEffects* object.
  */
 class GrGLVertexProgramEffectsBuilder : public GrGLProgramEffectsBuilder {
 public:
     GrGLVertexProgramEffectsBuilder(GrGLFullShaderBuilder*, int reserveCount);
     virtual ~GrGLVertexProgramEffectsBuilder() { }
     virtual void emitEffect(const GrEffectStage&,
                             GrGLProgramEffects::EffectKey,
                             const char* outColor,
                             const char* inColor,
                             int stageIndex) SK_OVERRIDE;
     /**
      * Finalizes the building process and returns the effect array. After this call, the builder
      * becomes invalid.
      */
     GrGLProgramEffects* finish() { return fProgramEffects.detach(); }
 private:
     GrGLFullShaderBuilder*                  fBuilder;
     SkAutoTDelete<GrGLVertexProgramEffects> fProgramEffects;
     typedef GrGLProgramEffectsBuilder INHERITED;
 };
 ////////////////////////////////////////////////////////////////////////////////
 /**
  * This is a GrGLProgramEffects implementation that does coord transforms with the the built-in GL
  * TexGen functionality.
  */
 class GrGLTexGenProgramEffects : public GrGLProgramEffects {
 public:
     virtual void setData(GrGpuGL*,
                          const GrGLUniformManager&,
                          const GrEffectStage* effectStages[]) SK_OVERRIDE;
 private:
     friend class GrGLTexGenProgramEffectsBuilder;
     GrGLTexGenProgramEffects(int reserveCount)
         : INHERITED(reserveCount)
         , fTransforms(reserveCount) {
     }
     /**
      * Helper for GrGLProgramEffectsBuilder::emitEfffect(). This method is meant to only be called
      * during the construction phase.
      */
     void emitEffect(GrGLFragmentOnlyShaderBuilder*,
                     const GrEffectStage&,
                     GrGLProgramEffects::EffectKey,
                     const char* outColor,
                     const char* inColor,
                     int stageIndex);
     /**
      * Helper for emitEffect(). Allocates texture units from the builder for each transform in an
      * effect. The transforms all use adjacent texture units. They either use two or three of the
      * coordinates at a given texture unit, depending on if they need perspective interpolation.
      * The expressions to access the transformed coords (i.e. 'vec2(gl_TexCoord[0])') as well as the
      * types are appended to the TransformedCoordsArray* object, which is in turn passed to the
      * effect's emitCode() function.
      */
     void setupTexGen(GrGLFragmentOnlyShaderBuilder*,
                      const GrEffectRef&,
                      EffectKey,
                      TransformedCoordsArray*);
     /**
      * Helper for setData(). Sets the TexGen state for each transform in an effect.
      */
     void setTexGenState(GrGpuGL*, const GrDrawEffect&, int effectIdx);
     struct Transforms {
         Transforms(EffectKey transformKey, int texCoordIndex)
             : fTransformKey(transformKey), fTexCoordIndex(texCoordIndex) {}
         EffectKey fTransformKey;
         int fTexCoordIndex;
     };
     SkTArray<Transforms> fTransforms;
     typedef GrGLProgramEffects INHERITED;
 };
 /**
  * This class is used to construct a GrGLTexGenProgramEffects* object.
  */
 class GrGLTexGenProgramEffectsBuilder : public GrGLProgramEffectsBuilder {
 public:
     GrGLTexGenProgramEffectsBuilder(GrGLFragmentOnlyShaderBuilder*, int reserveCount);
     virtual ~GrGLTexGenProgramEffectsBuilder() { }
     virtual void emitEffect(const GrEffectStage&,
                             GrGLProgramEffects::EffectKey,
                             const char* outColor,
                             const char* inColor,
                             int stageIndex) SK_OVERRIDE;
     /**
      * Finalizes the building process and returns the effect array. After this call, the builder
      * becomes invalid.
      */
     GrGLProgramEffects* finish() { return fProgramEffects.detach(); }
 private:
     GrGLFragmentOnlyShaderBuilder*          fBuilder;
     SkAutoTDelete<GrGLTexGenProgramEffects> fProgramEffects;
     typedef GrGLProgramEffectsBuilder INHERITED;
 };
 #endif

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gfx/skia/trunk/src/gpu/gl/GrGLProgramEffects.h@129ffea94266 (annotated)

gfx/skia/trunk/src/gpu/gl/GrGLProgramEffects.h