Solo gp

src/gpu/gl/GrGLProcessor.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
-#ifndef GrGLEffect_DEFINED
-#define GrGLEffect_DEFINED
+#ifndef GrGLProcessor_DEFINED
+#define GrGLProcessor_DEFINED
 
-#include "GrBackendEffectFactory.h"
+#include "GrBackendProcessorFactory.h"
 #include "GrGLProgramEffects.h"
 #include "GrGLShaderVar.h"
 #include "GrGLSL.h"
 
-class GrGLShaderBuilder;
-
 /** @file
     This file contains specializations for OpenGL of the shader stages declared in
-    include/gpu/GrEffect.h. Objects of type GrGLEffect are responsible for emitting the
-    GLSL code that implements a GrEffect and for uploading uniforms at draw time. If they don't
+    include/gpu/GrProcessor.h. Objects of type GrGLProcessor are responsible for emitting the
+    GLSL code that implements a GrProcessor and for uploading uniforms at draw time. If they don't
     always emit the same GLSL code, they must have a function:
-        static inline void GenKey(const GrEffect&, const GrGLCaps&, GrEffectKeyBuilder*)
-    that is used to implement a program cache. When two GrEffects produce the same key this means
-    that their GrGLEffects would emit the same GLSL code.
+        static inline void GenKey(const GrProcessor&, const GrGLCaps&, GrProcessorKeyBuilder*)
+    that is used to implement a program cache. When two GrProcessors produce the same key this means
+    that their GrGLProcessors would emit the same GLSL code.
 
-    The GrGLEffect subclass must also have a constructor of the form:
-        EffectSubclass::EffectSubclass(const GrBackendEffectFactory&, const GrEffect&)
+    The GrGLProcessor subclass must also have a constructor of the form:
+        EffectSubclass::EffectSubclass(const GrBackendEffectFactory&, const GrProcessor&)
 
-    These objects are created by the factory object returned by the GrEffect::getFactory().
+    These objects are created by the factory object returned by the GrProcessor::getFactory().
 */
 
-class GrGLTexture;
-class GrGLGeometryProcessor;
+class GrGLProcessor {
+public:
+    GrGLProcessor(const GrBackendProcessorFactory& factory)
+        : fFactory(factory) {
+    }
 
-class GrGLEffect {
-public:
     typedef GrGLProgramDataManager::UniformHandle UniformHandle;
 
     /**
-     * Passed to GrGLEffects so they can add transformed coordinates to their shader code.
+     * Passed to GrGLProcessors so they can add transformed coordinates to their shader code.
      */
     typedef GrShaderVar TransformedCoords;
     typedef SkTArray<GrShaderVar> TransformedCoordsArray;
 
     /**
-     * Passed to GrGLEffects so they can add texture reads to their shader code.
+     * Passed to GrGLProcessors 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);
         }
 
         // bitfield of GrColorComponentFlags present in the texture's config.
         uint32_t configComponentMask() const { return fConfigComponentMask; }
         // this is .abcd
         const char* swizzle() const { return fSwizzle; }
 
     private:
         UniformHandle fSamplerUniform;
         uint32_t      fConfigComponentMask;
         char          fSwizzle[5];
 
         friend class GrGLShaderBuilder;
     };
 
     typedef SkTArray<TextureSampler> TextureSamplerArray;
 
-    GrGLEffect(const GrBackendEffectFactory& factory)
-        : fFactory(factory)
-        , fIsVertexEffect(false) {
+    virtual ~GrGLProcessor() {}
+
+    /** A GrGLProcessor instance can be reused with any GrProcessor that produces the same stage
+        key; this function reads data from a GrProcessor and uploads any uniform variables required
+        by the shaders created in emitCode(). The GrProcessor installed in the GrDrawEffect is
+        guaranteed to be of the same type that created this GrGLProcessor and to have an identical
+        effect key as the one that created this GrGLProcessor. Effects that use local coords have
+        to consider whether the GrProcessorStage's coord change matrix should be used. When explicit
+        local coordinates are used it can be ignored. */
+    virtual void setData(const GrGLProgramDataManager&, const GrProcessor&) {}
+
+    const char* name() const { return fFactory.name(); }
+
+    static void GenKey(const GrProcessor&, const GrGLCaps&, GrProcessorKeyBuilder*) {}
+
+protected:
+    const GrBackendProcessorFactory& fFactory;
+};
+
+class GrGLFragmentProcessor : public GrGLProcessor {
+public:
+    GrGLFragmentProcessor(const GrBackendProcessorFactory& factory)
+        : INHERITED(factory) {
     }
 
-    virtual ~GrGLEffect() {}
+    virtual ~GrGLFragmentProcessor() {}
 
     /** Called when the program stage should insert its code into the shaders. The code in each
         shader will be in its own block ({}) and so locally scoped names will not collide across
         stages.
 
         @param builder      Interface used to emit code in the shaders.
         @param effect       The effect that generated this program stage.
-        @param key          The key that was computed by GenKey() from the generating GrEffect.
+        @param key          The key that was computed by GenKey() from the generating GrProcessor.
         @param outputColor  A predefined vec4 in the FS in which the stage should place its output
                             color (or coverage).
         @param inputColor   A vec4 that holds the input color to the stage in the FS. This may be
                             NULL in which case the implied input is solid white (all ones).
                             TODO: Better system for communicating optimization info (e.g. input
                             color is solid white, trans black, known to be opaque, etc.) that allows
                             the effect to communicate back similar known info about its output.
-        @param samplers     One entry for each GrTextureAccess of the GrEffect that generated the
-                            GrGLEffect. These can be passed to the builder to emit texture
+        @param samplers     One entry for each GrTextureAccess of the GrProcessor that generated the

[bsalomon, 2014/09/22 15:35:23]

This comment was already busted, but how about:

Contains one entry for each GrTextureAccess added by the GrProcessor. These can
be passed...

+                            GrGLProcessor. These can be passed to the builder to emit texture
                             reads in the generated code.
         */
     virtual void emitCode(GrGLProgramBuilder* builder,
-                          const GrEffect& effect,
-                          const GrEffectKey& key,
+                          const GrFragmentProcessor& effect,
+                          const GrProcessorKey& key,
                           const char* outputColor,
                           const char* inputColor,
                           const TransformedCoordsArray& coords,
                           const TextureSamplerArray& samplers) = 0;
 
-    /** A GrGLEffect instance can be reused with any GrEffect that produces the same stage
-        key; this function reads data from a GrEffect and uploads any uniform variables required
-        by the shaders created in emitCode(). The GrEffect is
-        guaranteed to be of the same type that created this GrGLEffect and to have an identical
-        effect key as the one that created this GrGLEffect. Effects that use local coords have
-        to consider whether the GrEffectStage's coord change matrix should be used. When explicit
-        local coordinates are used it can be ignored. */
-    virtual void setData(const GrGLProgramDataManager&, const GrEffect&) {}
-
-    const char* name() const { return fFactory.name(); }
-
-    static void GenKey(const GrEffect&, const GrGLCaps&, GrEffectKeyBuilder*) {}
-
-    /** Used by the system when generating shader code, to see if this effect can be downcasted to
-        the internal GrGLGeometryProcessor type */
-    bool isVertexEffect() const { return fIsVertexEffect; }
-
-protected:
-    const GrBackendEffectFactory& fFactory;
-
 private:
-    friend class GrGLGeometryProcessor; // to set fIsVertexEffect
-
-    bool fIsVertexEffect;
+    typedef GrGLProcessor INHERITED;
 };
 
 #endif