Move shader precision modifier check onto GLSLCaps

src/gpu/gl/GrGLShaderVar.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrGLShaderVar_DEFINED
 #define GrGLShaderVar_DEFINED
 
-#include "GrGLContext.h"
 #include "GrShaderVar.h"
+#include "../glsl/GrGLSL.h"
+#include "../glsl/GrGLSLCaps.h"
 
 #define USE_UNIFORM_FLOAT_ARRAYS true
 
 /**
  * Represents a variable in a shader
  */
 class GrGLShaderVar : public GrShaderVar {
 public:
     /**
      * See GL_ARB_fragment_coord_conventions.
@@ skipping 125 matching lines @@
     Origin getOrigin() const { return fOrigin; }
 
     /**
      * Set the origin of the var
      */
     void setOrigin(Origin origin) { fOrigin = origin; }
 
     /**
      * Write a declaration of this variable to out.
      */
-    void appendDecl(const GrGLContextInfo& ctxInfo, SkString* out) const {
+    void appendDecl(const GrGLSLCaps* glslCaps, SkString* out) const {
         SkASSERT(kDefault_GrSLPrecision == fPrecision || GrSLTypeIsFloatType(fType));
         if (kUpperLeft_Origin == fOrigin) {
             // this is the only place where we specify a layout modifier. If we use other layout
             // modifiers in the future then they should be placed in a list.
             out->append("layout(origin_upper_left) ");
         }
         if (this->getTypeModifier() != kNone_TypeModifier) {
-           out->append(TypeModifierString(this->getTypeModifier(), ctxInfo.glslGeneration()));
+           out->append(TypeModifierString(glslCaps, this->getTypeModifier()));
            out->append(" ");
         }
-        out->append(PrecisionString(fPrecision, ctxInfo.standard()));
+        out->append(PrecisionString(glslCaps, fPrecision));
         GrSLType effectiveType = this->getType();
         if (this->isArray()) {
             if (this->isUnsizedArray()) {
                 out->appendf("%s %s[]",
                              GrGLSLTypeString(effectiveType),
                              this->getName().c_str());
             } else {
                 SkASSERT(this->getArrayCount() > 0);
                 out->appendf("%s %s[%d]",
                              GrGLSLTypeString(effectiveType),
@@ skipping 14 matching lines @@
                      fUseUniformFloatArrays ? "" : ".x");
     }
 
     void appendArrayAccess(const char* indexName, SkString* out) const {
         out->appendf("%s[%s]%s",
                      this->getName().c_str(),
                      indexName,
                      fUseUniformFloatArrays ? "" : ".x");
     }
 
-    static const char* PrecisionString(GrSLPrecision p, GrGLStandard standard) {
+    static const char* PrecisionString(const GrGLSLCaps* glslCaps, GrSLPrecision p) {
         // Desktop GLSL has added precision qualifiers but they don't do anything.
-        if (kGLES_GrGLStandard == standard) {
+        if (glslCaps->usesPrecisionModifiers()) {
             switch (p) {
                 case kLow_GrSLPrecision:
                     return "lowp ";
                 case kMedium_GrSLPrecision:
                     return "mediump ";
                 case kHigh_GrSLPrecision:
                     return "highp ";
                 default:
                     SkFAIL("Unexpected precision type.");
             }
         }
         return "";
     }
 
 private:
-    static const char* TypeModifierString(TypeModifier t, GrGLSLGeneration gen) {
+    static const char* TypeModifierString(const GrGLSLCaps* glslCaps, TypeModifier t) {
+        GrGLSLGeneration gen = glslCaps->generation();
         switch (t) {
             case kNone_TypeModifier:
                 return "";
             case kIn_TypeModifier:
                 return "in";
             case kInOut_TypeModifier:
                 return "inout";
             case kOut_TypeModifier:
                 return "out";
             case kUniform_TypeModifier:
@@ skipping 12 matching lines @@
 
     Origin          fOrigin;
     /// Work around driver bugs on some hardware that don't correctly
     /// support uniform float []
     bool            fUseUniformFloatArrays;
 
     typedef GrShaderVar INHERITED;
 };
 
 #endif