Move shader precision modifier check onto GLSLCaps

src/gpu/gl/builders/GrGLProgramBuilder.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 GrGLProgramBuilder_DEFINED
 #define GrGLProgramBuilder_DEFINED
 
 #include "GrGLFragmentShaderBuilder.h"
 #include "GrGLGeometryShaderBuilder.h"
 #include "GrGLVertexShaderBuilder.h"
 #include "../GrGLProgramDataManager.h"
 #include "../GrGLPrimitiveProcessor.h"
 #include "../GrGLXferProcessor.h"
 #include "../../GrPipeline.h"
 
 class GrFragmentProcessor;
+class GrGLSLCaps;
 
 // Enough precision to represent 1 / 2048 accurately in printf
 #define GR_SIGNIFICANT_POW2_DECIMAL_DIG 11
 
 /*
  * This is the base class for a series of interfaces.  This base class *MUST* remain abstract with
  * NO data members because it is used in multiple interface inheritance.
  * Heirarchy:
  *                      GrGLUniformBuilder
  *                     /                  \
@@ skipping 38 matching lines @@
 
     virtual const GrGLShaderVar& getUniformVariable(UniformHandle u) const = 0;
 
     /**
      * Shortcut for getUniformVariable(u).c_str()
      */
     virtual const char* getUniformCStr(UniformHandle u) const = 0;
 
     virtual const GrGLContextInfo& ctxInfo() const = 0;
 
+    virtual const GrGLSLCaps* glslCaps() const = 0;
+
     virtual GrGLGpu* gpu() const = 0;
 
     /*
      * *NOTE* NO MEMBERS ALLOWED, MULTIPLE INHERITANCE
      */
 };
 
 // TODO move this into GrGLGPBuilder and move them both out of this file
 class GrGLVarying {
 public:
@@ skipping 155 matching lines @@
     const GrGLShaderVar& getUniformVariable(UniformHandle u) const override {
         return fUniforms[u.toIndex()].fVariable;
     }
 
     const char* getUniformCStr(UniformHandle u) const override {
         return this->getUniformVariable(u).c_str();
     }
 
     const GrGLContextInfo& ctxInfo() const override;
 
+    const GrGLSLCaps* glslCaps() const override;
+
     GrGLGpu* gpu() const override { return fGpu; }
 
     GrGLXPFragmentBuilder* getFragmentShaderBuilder() override { return &fFS; }
     GrGLVertexBuilder* getVertexShaderBuilder() override { return &fVS; }
 
     void addVarying(
             const char* name,
             GrGLVarying*,
             GrSLPrecision precision = kDefault_GrSLPrecision) override;
 
@@ skipping 136 matching lines @@
     GrGLPrimitiveProcessor::TransformsOut fOutCoords;
     SkTArray<UniformHandle> fSamplerUniforms;
     SeparableVaryingInfoArray fSeparableVaryingInfos;
 
     friend class GrGLShaderBuilder;
     friend class GrGLVertexBuilder;
     friend class GrGLFragmentShaderBuilder;
     friend class GrGLGeometryBuilder;
 };
 #endif