Create GLSLUniformHandler class for gpu backend

src/effects/gradients/SkGradientShader.cpp

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkGradientShaderPriv.h"
 #include "SkLinearGradient.h"
 #include "SkRadialGradient.h"
@@ skipping 892 matching lines @@
 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END
 
 ///////////////////////////////////////////////////////////////////////////////
 
 #if SK_SUPPORT_GPU
 
 #include "effects/GrTextureStripAtlas.h"
 #include "GrInvariantOutput.h"
 #include "gl/GrGLContext.h"
 #include "glsl/GrGLSLFragmentShaderBuilder.h"
-#include "glsl/GrGLSLProgramBuilder.h"
 #include "glsl/GrGLSLProgramDataManager.h"
+#include "glsl/GrGLSLUniformHandler.h"
 #include "SkGr.h"
 
 GrGLGradientEffect::GrGLGradientEffect()
     : fCachedYCoord(SK_ScalarMax) {
 }
 
 GrGLGradientEffect::~GrGLGradientEffect() { }
 
-void GrGLGradientEffect::emitUniforms(GrGLSLFPBuilder* builder, const GrGradientEffect& ge) {
+void GrGLGradientEffect::emitUniforms(GrGLSLUniformHandler* uniformHandler,
+                                      const GrGradientEffect& ge) {
 
     if (SkGradientShaderBase::kTwo_GpuColorType == ge.getColorType()) { // 2 Color case
-        fColorStartUni = builder->addUniform(GrGLSLProgramBuilder::kFragment_Visibility,
-                                             kVec4f_GrSLType, kDefault_GrSLPrecision,
-                                            "GradientStartColor");
-        fColorEndUni = builder->addUniform(GrGLSLProgramBuilder::kFragment_Visibility,
-                                           kVec4f_GrSLType, kDefault_GrSLPrecision,
-                                           "GradientEndColor");
+        fColorStartUni = uniformHandler->addUniform(GrGLSLUniformHandler::kFragment_Visibility,
+                                                    kVec4f_GrSLType, kDefault_GrSLPrecision,
+                                                    "GradientStartColor");
+        fColorEndUni = uniformHandler->addUniform(GrGLSLUniformHandler::kFragment_Visibility,
+                                                  kVec4f_GrSLType, kDefault_GrSLPrecision,
+                                                  "GradientEndColor");
 
     } else if (SkGradientShaderBase::kThree_GpuColorType == ge.getColorType()) { // 3 Color Case
-        fColorStartUni = builder->addUniform(GrGLSLProgramBuilder::kFragment_Visibility,
-                                             kVec4f_GrSLType,  kDefault_GrSLPrecision,
-                                             "GradientStartColor");
-        fColorMidUni = builder->addUniform(GrGLSLProgramBuilder::kFragment_Visibility,
-                                           kVec4f_GrSLType, kDefault_GrSLPrecision,
-                                           "GradientMidColor");
-        fColorEndUni = builder->addUniform(GrGLSLProgramBuilder::kFragment_Visibility,
-                                           kVec4f_GrSLType, kDefault_GrSLPrecision,
-                                           "GradientEndColor");
+        fColorStartUni = uniformHandler->addUniform(GrGLSLUniformHandler::kFragment_Visibility,
+                                                    kVec4f_GrSLType,  kDefault_GrSLPrecision,
+                                                    "GradientStartColor");
+        fColorMidUni = uniformHandler->addUniform(GrGLSLUniformHandler::kFragment_Visibility,
+                                                  kVec4f_GrSLType, kDefault_GrSLPrecision,
+                                                  "GradientMidColor");
+        fColorEndUni = uniformHandler->addUniform(GrGLSLUniformHandler::kFragment_Visibility,
+                                                  kVec4f_GrSLType, kDefault_GrSLPrecision,
+                                                  "GradientEndColor");
 
     } else { // if not a fast case
-        fFSYUni = builder->addUniform(GrGLSLProgramBuilder::kFragment_Visibility,
-                                      kFloat_GrSLType, kDefault_GrSLPrecision,
-                                      "GradientYCoordFS");
+        fFSYUni = uniformHandler->addUniform(GrGLSLUniformHandler::kFragment_Visibility,
+                                             kFloat_GrSLType, kDefault_GrSLPrecision,
+                                             "GradientYCoordFS");
     }
 }
 
 static inline void set_color_uni(const GrGLSLProgramDataManager& pdman,
                                  const GrGLSLProgramDataManager::UniformHandle uni,
                                  const SkColor* color) {
        pdman.set4f(uni,
                    SkColorGetR(*color) / 255.f,
                    SkColorGetG(*color) / 255.f,
                    SkColorGetB(*color) / 255.f,
@@ skipping 61 matching lines @@
         key |= kThreeColorKey;
     }
 
     if (GrGradientEffect::kBeforeInterp_PremulType == e.getPremulType()) {
         key |= kPremulBeforeInterpKey;
     }
 
     return key;
 }
 
-void GrGLGradientEffect::emitColor(GrGLSLFPBuilder* builder,
-                                   GrGLSLFragmentBuilder* fragBuilder,
+void GrGLGradientEffect::emitColor(GrGLSLFragmentBuilder* fragBuilder,
+                                   GrGLSLUniformHandler* uniformHandler,
                                    const GrGLSLCaps* glslCaps,
                                    const GrGradientEffect& ge,
                                    const char* gradientTValue,
                                    const char* outputColor,
                                    const char* inputColor,
                                    const TextureSamplerArray& samplers) {
     if (SkGradientShaderBase::kTwo_GpuColorType == ge.getColorType()){
         fragBuilder->codeAppendf("\tvec4 colorTemp = mix(%s, %s, clamp(%s, 0.0, 1.0));\n",
-                                 builder->getUniformVariable(fColorStartUni).c_str(),
-                                 builder->getUniformVariable(fColorEndUni).c_str(),
+                                 uniformHandler->getUniformVariable(fColorStartUni).c_str(),
+                                 uniformHandler->getUniformVariable(fColorEndUni).c_str(),
                                  gradientTValue);
         // Note that we could skip this step if both colors are known to be opaque. Two
         // considerations:
         // The gradient SkShader reporting opaque is more restrictive than necessary in the two pt
         // case. Make sure the key reflects this optimization (and note that it can use the same
         // shader as thekBeforeIterp case). This same optimization applies to the 3 color case
         // below.
         if (GrGradientEffect::kAfterInterp_PremulType == ge.getPremulType()) {
             fragBuilder->codeAppend("\tcolorTemp.rgb *= colorTemp.a;\n");
         }
 
         fragBuilder->codeAppendf("\t%s = %s;\n", outputColor,
                                  (GrGLSLExpr4(inputColor) * GrGLSLExpr4("colorTemp")).c_str());
     } else if (SkGradientShaderBase::kThree_GpuColorType == ge.getColorType()) {
         fragBuilder->codeAppendf("\tfloat oneMinus2t = 1.0 - (2.0 * (%s));\n",
                                  gradientTValue);
         fragBuilder->codeAppendf("\tvec4 colorTemp = clamp(oneMinus2t, 0.0, 1.0) * %s;\n",
-                                 builder->getUniformVariable(fColorStartUni).c_str());
+                                 uniformHandler->getUniformVariable(fColorStartUni).c_str());
         if (!glslCaps->canUseMinAndAbsTogether()) {
             // The Tegra3 compiler will sometimes never return if we have
             // min(abs(oneMinus2t), 1.0), or do the abs first in a separate expression.
             fragBuilder->codeAppend("\tfloat minAbs = abs(oneMinus2t);\n");
             fragBuilder->codeAppend("\tminAbs = minAbs > 1.0 ? 1.0 : minAbs;\n");
             fragBuilder->codeAppendf("\tcolorTemp += (1.0 - minAbs) * %s;\n",
-                                     builder->getUniformVariable(fColorMidUni).c_str());
+                                     uniformHandler->getUniformVariable(fColorMidUni).c_str());
         } else {
             fragBuilder->codeAppendf("\tcolorTemp += (1.0 - min(abs(oneMinus2t), 1.0)) * %s;\n",
-                                     builder->getUniformVariable(fColorMidUni).c_str());
+                                     uniformHandler->getUniformVariable(fColorMidUni).c_str());
         }
         fragBuilder->codeAppendf("\tcolorTemp += clamp(-oneMinus2t, 0.0, 1.0) * %s;\n",
-                                 builder->getUniformVariable(fColorEndUni).c_str());
+                                 uniformHandler->getUniformVariable(fColorEndUni).c_str());
         if (GrGradientEffect::kAfterInterp_PremulType == ge.getPremulType()) {
             fragBuilder->codeAppend("\tcolorTemp.rgb *= colorTemp.a;\n");
         }
 
         fragBuilder->codeAppendf("\t%s = %s;\n", outputColor,
                                  (GrGLSLExpr4(inputColor) * GrGLSLExpr4("colorTemp")).c_str());
     } else {
         fragBuilder->codeAppendf("\tvec2 coord = vec2(%s, %s);\n",
                                  gradientTValue,
-                                 builder->getUniformVariable(fFSYUni).c_str());
+                                 uniformHandler->getUniformVariable(fFSYUni).c_str());
         fragBuilder->codeAppendf("\t%s = ", outputColor);
         fragBuilder->appendTextureLookupAndModulate(inputColor,
                                                     samplers[0],
                                                     "coord");
         fragBuilder->codeAppend(";\n");
     }
 }
 
 /////////////////////////////////////////////////////////////////////
 
@@ skipping 117 matching lines @@
             (*stops)[i] = stop;
             stop = i < outColors - 1 ? stop + random->nextUScalar1() * (1.f - stop) : 1.f;
         }
     }
     *tm = static_cast<SkShader::TileMode>(random->nextULessThan(SkShader::kTileModeCount));
 
     return outColors;
 }
 
 #endif