Breaking out full program and frag only

src/gpu/gl/builders/GrGLFullProgramBuilder.h

+/*
+ * Copyright 2014 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef GrGLFullProgramBuilder_DEFINED
+#define GrGLFullProgramBuilder_DEFINED
+
+#include "GrGLProgramBuilder.h"
+
+class GrGLFullProgramBuilder : public GrGLProgramBuilder {
+public:
+    GrGLFullProgramBuilder(GrGpuGL*, const GrGLProgramDesc&);
+
+   /** 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,
+                    GrGLShaderVar::Precision fsPrecision=GrGLShaderVar::kDefault_Precision);
+
+    /** Add a separable varying input variable to the current program.
+     * A separable varying (fragment shader input) is a varying that can be used also when vertex
+     * shaders are not used. With a vertex shader, the operation is same as with other
+     * varyings. Without a vertex shader, such as with NV_path_rendering, GL APIs are used to
+     * populate the variable. The APIs can refer to the variable through the returned handle.
+     */
+    VaryingHandle addSeparableVarying(GrSLType type,
+                                      const char* name,
+                                      const char** vsOutName,
+                                      const char** fsInName);
+
+    GrGLVertexShaderBuilder* getVertexShaderBuilder() { return &fVS; }
+
+private:
+    virtual void emitCodeBeforeEffects(GrGLSLExpr4* color,
+                                       GrGLSLExpr4* coverage) SK_OVERRIDE;
+
+    virtual void emitGeometryProcessor(const GrEffectStage* geometryProcessor,
+                                       GrGLSLExpr4* coverage) SK_OVERRIDE;
+
+    virtual GrGLProgramEffects* createAndEmitEffects(const GrEffectStage* effectStages[],
+                                                     int effectCnt,
+                                                     const GrGLProgramDesc::EffectKeyProvider&,
+                                                     GrGLSLExpr4* inOutFSColor) SK_OVERRIDE;
+
+    /*
+     * These functions are temporary and will eventually operate not on effects but on
+     * geometry processors
+     */
+    void createAndEmitEffect(GrGLProgramEffectsBuilder*,
+                             const GrEffectStage* effectStage,
+                             const GrGLProgramDesc::EffectKeyProvider&,
+                             GrGLSLExpr4* inOutFSColor);
+
+    GrGLProgramEffects* createAndEmitEffect(const GrEffectStage* geometryProcessor,
+                                            const GrGLProgramDesc::EffectKeyProvider&,
+                                            GrGLSLExpr4* inOutFSColor);
+
+    virtual void emitCodeAfterEffects() SK_OVERRIDE;
+
+    virtual bool compileAndAttachShaders(GrGLuint programId,
+                                         SkTDArray<GrGLuint>* shaderIds) const SK_OVERRIDE;
+
+    virtual void bindProgramLocations(GrGLuint programId) SK_OVERRIDE;
+
+    GrGLGeometryShaderBuilder fGS;
+    GrGLVertexShaderBuilder   fVS;
+
+    typedef GrGLProgramBuilder INHERITED;
+};
+
+#endif