Add GrEllipseEdgeEffect

src/gpu/gl/GrGLShaderBuilder.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 GrGLShaderBuilder_DEFINED
 #define GrGLShaderBuilder_DEFINED
 
@@ skipping 166 matching lines @@
 
     const GrGLShaderVar& getUniformVariable(GrGLUniformManager::UniformHandle) const;
 
     /**
      * Shortcut for getUniformVariable(u).c_str()
      */
     const char* getUniformCStr(GrGLUniformManager::UniformHandle u) const {
         return this->getUniformVariable(u).c_str();
     }
 
-    /** Add a varying variable to the current program to pass values between vertex and fragment
+   /** Add a vertex attribute to the current program that is passed in from the vertex data.
+       Returns false if the attribute was already there, true otherwise. */
+    bool addAttribute(GrSLType type, const char* name);
+
+   /** Add a varying variable to the current program to pass values between vertex and fragment
         shaders. If the last two parameters are non-NULL, they are filled in with the name
         generated. */
     void addVarying(GrSLType type,
                     const char* name,
                     const char** vsOutName = NULL,
                     const char** fsInName = NULL);
 
     /** Returns a variable name that represents the position of the fragment in the FS. The position
         is in device space (e.g. 0,0 is the top left and pixel centers are at half-integers). */
     const char* fragmentPosition();
@@ skipping 17 matching lines @@
     // TODO: move remainder of shader code generation to this class and call this privately
     // Handles of sampler uniforms generated for the effect are appended to samplerHandles.
     GrGLEffect* createAndEmitGLEffect(
                                 const GrEffectStage& stage,
                                 GrBackendEffectFactory::EffectKey key,
                                 const char* fsInColor, // NULL means no incoming color
                                 const char* fsOutColor,
                                 const char* vsInCoord,
                                 SkTArray<GrGLUniformManager::UniformHandle, true>* samplerHandles);
     GrGLUniformManager::UniformHandle getRTHeightUniform() const { return fRTHeightUniform; }
+
+    struct AttributePair {
+        void set(int index, const SkString& name) {
+            fIndex = index; fName = name;
+        }
+        int      fIndex;
+        SkString fName;
+    };
+    const SkSTArray<10, AttributePair, true>& getEffectAttributes() const {
+        return fEffectAttributes;
+    }
+    const SkString* getEffectAttributeName(int attributeIndex) const;
+
     // TODO: Make this do all the compiling, linking, etc.
     void finished(GrGLuint programID);
 
     const GrGLContextInfo& ctxInfo() const { return fCtxInfo; }
 
 private:
     void codeAppendf(ShaderType type, const char format[], va_list args);
     void codeAppend(ShaderType type, const char* str);
 
     typedef GrTAllocator<GrGLShaderVar> VarArray;
@@ skipping 28 matching lines @@
     SkString                            fFSFunctions;
     SkString                            fFSHeader;
 
     SkString                            fFSCode;
     SkString                            fVSCode;
     SkString                            fGSCode;
 
     bool                                fSetupFragPosition;
     GrGLUniformManager::UniformHandle   fRTHeightUniform;
 
+    SkSTArray<10, AttributePair, true>  fEffectAttributes;
+
     GrGLShaderVar*                      fPositionVar;
 };
 
 #endif