Move XferProcessors to glsl

src/gpu/gl/GrGLXferProcessor.cpp

Index: src/gpu/gl/GrGLXferProcessor.cpp
diff --git a/src/gpu/gl/GrGLXferProcessor.cpp b/src/gpu/gl/GrGLXferProcessor.cpp
deleted file mode 100644
index bf333bb3178fc4efce33836db58e75ee660e258b..0000000000000000000000000000000000000000
--- a/src/gpu/gl/GrGLXferProcessor.cpp
+++ /dev/null
@@ -1,97 +0,0 @@
-/*
- * Copyright 2014 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#include "gl/GrGLXferProcessor.h"
-
-#include "GrXferProcessor.h"
-#include "glsl/GrGLSLFragmentShaderBuilder.h"
-#include "glsl/GrGLSLProgramBuilder.h"
-#include "glsl/GrGLSLProgramDataManager.h"
-
-void GrGLXferProcessor::emitCode(const EmitArgs& args) {
-    if (!args.fXP.willReadDstColor()) {
-        this->emitOutputsForBlendState(args);
-        return;
-    }
-
-    GrGLSLXPFragmentBuilder* fsBuilder = args.fPB->getFragmentShaderBuilder();
-    const char* dstColor = fsBuilder->dstColor();
-
-    if (args.fXP.getDstTexture()) {
-        bool topDown = kTopLeft_GrSurfaceOrigin == args.fXP.getDstTexture()->origin();
-
-        if (args.fXP.readsCoverage()) {
-            // We don't think any shaders actually output negative coverage, but just as a safety
-            // check for floating point precision errors we compare with <= here
-            fsBuilder->codeAppendf("if (all(lessThanEqual(%s, vec4(0)))) {"
-                                   "    discard;"
-                                   "}", args.fInputCoverage);
-        }
-
-        const char* dstTopLeftName;
-        const char* dstCoordScaleName;
-
-        fDstTopLeftUni = args.fPB->addUniform(GrGLSLProgramBuilder::kFragment_Visibility,
-                                              kVec2f_GrSLType,
-                                              kDefault_GrSLPrecision,
-                                              "DstTextureUpperLeft",
-                                              &dstTopLeftName);
-        fDstScaleUni = args.fPB->addUniform(GrGLSLProgramBuilder::kFragment_Visibility,
-                                            kVec2f_GrSLType,
-                                            kDefault_GrSLPrecision,
-                                            "DstTextureCoordScale",
-                                            &dstCoordScaleName);
-        const char* fragPos = fsBuilder->fragmentPosition();
-
-        fsBuilder->codeAppend("// Read color from copy of the destination.\n");
-        fsBuilder->codeAppendf("vec2 _dstTexCoord = (%s.xy - %s) * %s;",
-                               fragPos, dstTopLeftName, dstCoordScaleName);
-
-        if (!topDown) {
-            fsBuilder->codeAppend("_dstTexCoord.y = 1.0 - _dstTexCoord.y;");
-        }
-
-        fsBuilder->codeAppendf("vec4 %s = ", dstColor);
-        fsBuilder->appendTextureLookup(args.fSamplers[0], "_dstTexCoord", kVec2f_GrSLType);
-        fsBuilder->codeAppend(";");
-    }
-
-    this->emitBlendCodeForDstRead(args.fPB, args.fInputColor, dstColor, args.fOutputPrimary,
-                                  args.fXP);
-
-    // Apply coverage.
-    if (args.fXP.dstReadUsesMixedSamples()) {
-        if (args.fXP.readsCoverage()) {
-            fsBuilder->codeAppendf("%s *= %s;", args.fOutputPrimary, args.fInputCoverage);
-            fsBuilder->codeAppendf("%s = %s;", args.fOutputSecondary, args.fInputCoverage);
-        } else {
-            fsBuilder->codeAppendf("%s = vec4(1.0);", args.fOutputSecondary);
-        }
-    } else if (args.fXP.readsCoverage()) {
-        fsBuilder->codeAppendf("%s = %s * %s + (vec4(1.0) - %s) * %s;",
-                               args.fOutputPrimary, args.fInputCoverage,
-                               args.fOutputPrimary, args.fInputCoverage, dstColor);
-    }
-}
-
-void GrGLXferProcessor::setData(const GrGLSLProgramDataManager& pdm, const GrXferProcessor& xp) {
-    if (xp.getDstTexture()) {
-        if (fDstTopLeftUni.isValid()) {
-            pdm.set2f(fDstTopLeftUni, static_cast<float>(xp.dstTextureOffset().fX),
-                      static_cast<float>(xp.dstTextureOffset().fY));
-            pdm.set2f(fDstScaleUni, 1.f / xp.getDstTexture()->width(),
-                      1.f / xp.getDstTexture()->height());
-        } else {
-            SkASSERT(!fDstScaleUni.isValid());
-        }
-    } else {
-        SkASSERT(!fDstTopLeftUni.isValid());
-        SkASSERT(!fDstScaleUni.isValid());
-    }
-    this->onSetData(pdm, xp);
-}
-