Re-revert r6233.



git-svn-id: http://skia.googlecode.com/svn/trunk@6239 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/GrContext.cpp b/src/gpu/GrContext.cpp
index 2a39fad..f7f6b0c 100644
--- a/src/gpu/GrContext.cpp
+++ b/src/gpu/GrContext.cpp
@@ -1307,44 +1307,35 @@
         ast.set(this, desc, match);
         GrTexture* texture = ast.texture();
         if (texture) {
-            GrEffectStage stage;
-            // compute a matrix to perform the draw
-            GrMatrix textureMatrix;
-            if (flipY) {
-                textureMatrix.setTranslate(SK_Scalar1 * left,
-                                    SK_Scalar1 * (top + height));
-                textureMatrix.set(GrMatrix::kMScaleY, -GR_Scalar1);
-            } else {
-                textureMatrix.setTranslate(SK_Scalar1 *left, SK_Scalar1 *top);
-            }
-            textureMatrix.postIDiv(src->width(), src->height());
-
-            bool effectInstalled = false;
+            SkAutoTUnref<GrEffect> effect;
             if (unpremul) {
-                if (this->installPMToUPMEffect(src, swapRAndB, textureMatrix, &stage)) {
-                    effectInstalled = true;
-                    unpremul = false; // we no longer need to do this on CPU after the readback.
-                }
+                effect.reset(this->createPMToUPMEffect(src, swapRAndB));
             }
             // If we failed to create a PM->UPM effect and have no other conversions to perform then
             // there is no longer any point to using the scratch.
-            if (effectInstalled || flipY || swapRAndB) {
-                if (!effectInstalled) {
-                    SkAssertResult(GrConfigConversionEffect::InstallEffect(
-                                            src,
-                                            swapRAndB,
-                                            GrConfigConversionEffect::kNone_PMConversion,
-                                            textureMatrix,
-                                            &stage));
+            if (NULL != effect || flipY || swapRAndB) {
+                if (NULL == effect) {
+                    effect.reset(GrConfigConversionEffect::Create(src, swapRAndB));
+                    GrAssert(NULL != effect);
+                } else {
+                    unpremul = false; // we will handle the UPM conversion in the draw
                 }
                 swapRAndB = false; // we will handle the swap in the draw.
-                flipY = false; // we already incorporated the y flip in the matrix
 
                 GrDrawTarget::AutoStateRestore asr(fGpu, GrDrawTarget::kReset_ASRInit);
                 GrDrawState* drawState = fGpu->drawState();
-                *drawState->stage(0) = stage;
-
                 drawState->setRenderTarget(texture->asRenderTarget());
+                GrMatrix matrix;
+                if (flipY) {
+                    matrix.setTranslate(SK_Scalar1 * left,
+                                        SK_Scalar1 * (top + height));
+                    matrix.set(GrMatrix::kMScaleY, -GR_Scalar1);
+                    flipY = false; // the y flip will be handled in the draw
+                } else {
+                    matrix.setTranslate(SK_Scalar1 *left, SK_Scalar1 *top);
+                }
+                matrix.postIDiv(src->width(), src->height());
+                drawState->stage(0)->setEffect(effect, matrix);
                 GrRect rect = GrRect::MakeWH(GrIntToScalar(width), GrIntToScalar(height));
                 fGpu->drawSimpleRect(rect, NULL);
                 // we want to read back from the scratch's origin
@@ -1359,7 +1350,7 @@
                           readConfig, buffer, rowBytes, readUpsideDown)) {
         return false;
     }
-    // Perform any conversions we weren't able to perform using a scratch texture.
+    // Perform any conversions we weren't able to perfom using a scratch texture.
     if (unpremul || swapRAndB || flipY) {
         // These are initialized to suppress a warning
         SkCanvas::Config8888 srcC8888 = SkCanvas::kNative_Premul_Config8888;
@@ -1489,7 +1480,7 @@
         return;
     }
 #endif
-
+    SkAutoTUnref<GrEffect> effect;
     bool swapRAndB = (fGpu->preferredReadPixelsConfig(config) == GrPixelConfigSwapRAndB(config));
 
     GrPixelConfig textureConfig;
@@ -1508,24 +1499,15 @@
     if (NULL == texture) {
         return;
     }
-
-    GrEffectStage stage;
-    GrMatrix textureMatrix;
-    textureMatrix.setIDiv(texture->width(), texture->height());
-
     // allocate a tmp buffer and sw convert the pixels to premul
     SkAutoSTMalloc<128 * 128, uint32_t> tmpPixels(0);
 
-    bool effectInstalled = false;
     if (kUnpremul_PixelOpsFlag & flags) {
         if (kRGBA_8888_GrPixelConfig != config && kBGRA_8888_GrPixelConfig != config) {
             return;
         }
-        effectInstalled = this->installUPMToPMEffect(texture,
-                                                     swapRAndB,
-                                                     textureMatrix,
-                                                     &stage);
-        if (!effectInstalled) {
+        effect.reset(this->createUPMToPMEffect(texture, swapRAndB));
+        if (NULL == effect) {
             SkCanvas::Config8888 srcConfig8888, dstConfig8888;
             GR_DEBUGCODE(bool success = )
             grconfig_to_config8888(config, true, &srcConfig8888);
@@ -1542,13 +1524,9 @@
             rowBytes = 4 * width;
         }
     }
-    if (!effectInstalled) {
-        SkAssertResult(GrConfigConversionEffect::InstallEffect(
-                                                    texture,
-                                                    swapRAndB,
-                                                    GrConfigConversionEffect::kNone_PMConversion,
-                                                    textureMatrix,
-                                                    &stage));
+    if (NULL == effect) {
+        effect.reset(GrConfigConversionEffect::Create(texture, swapRAndB));
+        GrAssert(NULL != effect);
     }
 
     this->writeTexturePixels(texture,
@@ -1558,13 +1536,15 @@
 
     GrDrawTarget::AutoStateRestore  asr(fGpu, GrDrawTarget::kReset_ASRInit);
     GrDrawState* drawState = fGpu->drawState();
-    *drawState->stage(0) = stage;
 
     GrMatrix matrix;
     matrix.setTranslate(GrIntToScalar(left), GrIntToScalar(top));
     drawState->setViewMatrix(matrix);
     drawState->setRenderTarget(target);
 
+    matrix.setIDiv(texture->width(), texture->height());
+    drawState->stage(0)->setEffect(effect, matrix);
+
     fGpu->drawSimpleRect(GrRect::MakeWH(SkIntToScalar(width), SkIntToScalar(height)), NULL);
 }
 ////////////////////////////////////////////////////////////////////////////////
@@ -1746,10 +1726,7 @@
 }
 }
 
-bool GrContext::installPMToUPMEffect(GrTexture* texture,
-                                     bool swapRAndB,
-                                     const GrMatrix& matrix,
-                                     GrEffectStage* stage) {
+GrEffect* GrContext::createPMToUPMEffect(GrTexture* texture, bool swapRAndB) {
     if (!fDidTestPMConversions) {
         test_pm_conversions(this, &fPMToUPMConversion, &fUPMToPMConversion);
         fDidTestPMConversions = true;
@@ -1757,17 +1734,13 @@
     GrConfigConversionEffect::PMConversion pmToUPM =
         static_cast<GrConfigConversionEffect::PMConversion>(fPMToUPMConversion);
     if (GrConfigConversionEffect::kNone_PMConversion != pmToUPM) {
-        GrConfigConversionEffect::InstallEffect(texture, swapRAndB, pmToUPM, matrix, stage);
-        return true;
+        return GrConfigConversionEffect::Create(texture, swapRAndB, pmToUPM);
     } else {
-        return false;
+        return NULL;
     }
 }
 
-bool GrContext::installUPMToPMEffect(GrTexture* texture,
-                                     bool swapRAndB,
-                                     const GrMatrix& matrix,
-                                     GrEffectStage* stage) {
+GrEffect* GrContext::createUPMToPMEffect(GrTexture* texture, bool swapRAndB) {
     if (!fDidTestPMConversions) {
         test_pm_conversions(this, &fPMToUPMConversion, &fUPMToPMConversion);
         fDidTestPMConversions = true;
@@ -1775,10 +1748,9 @@
     GrConfigConversionEffect::PMConversion upmToPM =
         static_cast<GrConfigConversionEffect::PMConversion>(fUPMToPMConversion);
     if (GrConfigConversionEffect::kNone_PMConversion != upmToPM) {
-        GrConfigConversionEffect::InstallEffect(texture, swapRAndB, upmToPM, matrix, stage);
-        return true;
+        return GrConfigConversionEffect::Create(texture, swapRAndB, upmToPM);
     } else {
-        return false;
+        return NULL;
     }
 }
 
@@ -1836,7 +1808,7 @@
                              i < scaleFactorY ? 0.5f : 1.0f);
 
         paint.colorStage(0)->setEffect(SkNEW_ARGS(GrSingleTextureEffect,
-                                                  (srcTexture, matrix, true)))->unref();
+                                                  (srcTexture, true)), matrix)->unref();
         this->drawRectToRect(paint, dstRect, srcRect);
         srcRect = dstRect;
         srcTexture = dstTexture;
@@ -1893,8 +1865,8 @@
         // FIXME:  This should be mitchell, not bilinear.
         matrix.setIDiv(srcTexture->width(), srcTexture->height());
         this->setRenderTarget(dstTexture->asRenderTarget());
-        paint.colorStage(0)->setEffect(SkNEW_ARGS(GrSingleTextureEffect,(srcTexture,
-                                                                         matrix, true)))->unref();
+        paint.colorStage(0)->setEffect(SkNEW_ARGS(GrSingleTextureEffect,(srcTexture, true)),
+                                       matrix)->unref();
         SkRect dstRect(srcRect);
         scale_rect(&dstRect, (float) scaleFactorX, (float) scaleFactorY);
         this->drawRectToRect(paint, dstRect, srcRect);
diff --git a/src/gpu/GrDrawState.h b/src/gpu/GrDrawState.h
index b539441..3c6c3a3 100644
--- a/src/gpu/GrDrawState.h
+++ b/src/gpu/GrDrawState.h
@@ -198,16 +198,16 @@
     }
     void createTextureEffect(int stageIdx, GrTexture* texture, const GrMatrix& matrix) {
         GrAssert(!this->getStage(stageIdx).getEffect());
-        GrEffect* effect = SkNEW_ARGS(GrSingleTextureEffect, (texture, matrix));
-        this->stage(stageIdx)->setEffect(effect)->unref();
+        GrEffect* effect = SkNEW_ARGS(GrSingleTextureEffect, (texture));
+        this->stage(stageIdx)->setEffect(effect, matrix)->unref();
     }
     void createTextureEffect(int stageIdx,
                              GrTexture* texture,
                              const GrMatrix& matrix,
                              const GrTextureParams& params) {
         GrAssert(!this->getStage(stageIdx).getEffect());
-        GrEffect* effect = SkNEW_ARGS(GrSingleTextureEffect, (texture, matrix, params));
-        this->stage(stageIdx)->setEffect(effect)->unref();
+        GrEffect* effect = SkNEW_ARGS(GrSingleTextureEffect, (texture, params));
+        this->stage(stageIdx)->setEffect(effect, matrix)->unref();
     }
 
 
diff --git a/src/gpu/GrEffect.cpp b/src/gpu/GrEffect.cpp
index d470c9c..09032bf 100644
--- a/src/gpu/GrEffect.cpp
+++ b/src/gpu/GrEffect.cpp
@@ -20,26 +20,6 @@
 }
 #endif
 
-namespace GrEffectUnitTest {
-const SkMatrix& TestMatrix(SkRandom* random) {
-    static SkMatrix gMatrices[5];
-    static bool gOnce;
-    if (!gOnce) {
-        gMatrices[0].reset();
-        gMatrices[1].setTranslate(SkIntToScalar(-100), SkIntToScalar(100));
-        gMatrices[2].setRotate(SkIntToScalar(17));
-        gMatrices[3].setRotate(SkIntToScalar(185));
-        gMatrices[3].postTranslate(SkIntToScalar(66), SkIntToScalar(-33));
-        gMatrices[3].postScale(SkIntToScalar(2), SK_ScalarHalf);
-        gMatrices[4].setRotate(SkIntToScalar(215));
-        gMatrices[4].set(SkMatrix::kMPersp0, SkFloatToScalar(0.00013f));
-        gMatrices[4].set(SkMatrix::kMPersp1, SkFloatToScalar(-0.000039f));
-        gOnce = true;
-    }
-    return gMatrices[random->nextULessThan(static_cast<uint32_t>(SK_ARRAY_COUNT(gMatrices)))];
-}
-}
-
 class GrEffect_Globals {
 public:
     static GrMemoryPool* GetTLS() {
diff --git a/src/gpu/SkGpuDevice.cpp b/src/gpu/SkGpuDevice.cpp
index 946d54d..cdccbcd 100644
--- a/src/gpu/SkGpuDevice.cpp
+++ b/src/gpu/SkGpuDevice.cpp
@@ -608,7 +608,7 @@
         GrScalar sy = SkFloatToScalar(1.f / bitmap.height());
         matrix.postScale(sx, sy);
     }
-    stage->setEffect(SkNEW_ARGS(GrSingleTextureEffect, (texture, matrix, params)))->unref();
+    stage->setEffect(SkNEW_ARGS(GrSingleTextureEffect, (texture, params)), matrix)->unref();
 
     return true;
 }
@@ -875,7 +875,7 @@
             matrix.setIDiv(pathTexture->width(), pathTexture->height());
             // Blend pathTexture over blurTexture.
             context->setRenderTarget(blurTexture->asRenderTarget());
-            paint.colorStage(0)->setEffect(SkNEW_ARGS(GrSingleTextureEffect, (pathTexture, matrix)))->unref();
+            paint.colorStage(0)->setEffect(SkNEW_ARGS(GrSingleTextureEffect, (pathTexture)), matrix)->unref();
             if (SkMaskFilter::kInner_BlurType == blurType) {
                 // inner:  dst = dst * src
                 paint.setBlendFunc(kDC_GrBlendCoeff, kZero_GrBlendCoeff);
@@ -906,7 +906,7 @@
     matrix.postIDiv(blurTexture->width(), blurTexture->height());
 
     grp->coverageStage(MASK_IDX)->reset();
-    grp->coverageStage(MASK_IDX)->setEffect(SkNEW_ARGS(GrSingleTextureEffect, (blurTexture, matrix)))->unref();
+    grp->coverageStage(MASK_IDX)->setEffect(SkNEW_ARGS(GrSingleTextureEffect, (blurTexture)), matrix)->unref();
     context->drawRect(*grp, finalRect);
     return true;
 }
@@ -962,7 +962,7 @@
     m.setTranslate(-dstM.fBounds.fLeft*SK_Scalar1, -dstM.fBounds.fTop*SK_Scalar1);
     m.postIDiv(texture->width(), texture->height());
 
-    grp->coverageStage(MASK_IDX)->setEffect(SkNEW_ARGS(GrSingleTextureEffect, (texture, m)))->unref();
+    grp->coverageStage(MASK_IDX)->setEffect(SkNEW_ARGS(GrSingleTextureEffect, (texture)), m)->unref();
     GrRect d;
     d.setLTRB(GrIntToScalar(dstM.fBounds.fLeft),
               GrIntToScalar(dstM.fBounds.fTop),
diff --git a/src/gpu/effects/GrConfigConversionEffect.cpp b/src/gpu/effects/GrConfigConversionEffect.cpp
index 54d7285..0860645 100644
--- a/src/gpu/effects/GrConfigConversionEffect.cpp
+++ b/src/gpu/effects/GrConfigConversionEffect.cpp
@@ -218,27 +218,21 @@
     }
 }
 
-bool GrConfigConversionEffect::InstallEffect(GrTexture* texture,
-                                             bool swapRedAndBlue,
-                                             PMConversion pmConversion,
-                                             const GrMatrix& matrix,
-                                             GrEffectStage* stage) {
+GrEffect* GrConfigConversionEffect::Create(GrTexture* texture,
+                                                bool swapRedAndBlue,
+                                                PMConversion pmConversion) {
     if (!swapRedAndBlue && kNone_PMConversion == pmConversion) {
         // If we returned a GrConfigConversionEffect that was equivalent to a GrSingleTextureEffect
         // then we may pollute our texture cache with redundant shaders. So in the case that no
         // conversions were requested we instead return a GrSingleTextureEffect.
-        stage->setEffect(SkNEW_ARGS(GrSingleTextureEffect, (texture, matrix)), matrix)->unref();
-        return true;
+        return SkNEW_ARGS(GrSingleTextureEffect, (texture));
     } else {
         if (kRGBA_8888_GrPixelConfig != texture->config() &&
             kBGRA_8888_GrPixelConfig != texture->config() &&
             kNone_PMConversion != pmConversion) {
             // The PM conversions assume colors are 0..255
-            return false;
+            return NULL;
         }
-        stage->setEffect(SkNEW_ARGS(GrConfigConversionEffect, (texture,
-                                                               swapRedAndBlue,
-                                                               pmConversion)), matrix)->unref();
-        return true;
+        return SkNEW_ARGS(GrConfigConversionEffect, (texture, swapRedAndBlue, pmConversion));
     }
 }
diff --git a/src/gpu/effects/GrConfigConversionEffect.h b/src/gpu/effects/GrConfigConversionEffect.h
index 5b531d4..7c5f03f 100644
--- a/src/gpu/effects/GrConfigConversionEffect.h
+++ b/src/gpu/effects/GrConfigConversionEffect.h
@@ -33,12 +33,10 @@
         kPMConversionCnt
     };
 
-    // Installs an effect in the GrEffectStage to perform a config conversion.
-    static bool InstallEffect(GrTexture*,
-                              bool swapRedAndBlue,
-                              PMConversion pmConversion,
-                              const GrMatrix& matrix,
-                              GrEffectStage* stage);
+    // This will fail if the config is not 8888 and a PM conversion is requested.
+    static GrEffect* Create(GrTexture*,
+                                 bool swapRedAndBlue,
+                                 PMConversion pmConversion = kNone_PMConversion);
 
     static const char* Name() { return "Config Conversion"; }
     typedef GrGLConfigConversionEffect GLEffect;
diff --git a/src/gpu/effects/GrSingleTextureEffect.cpp b/src/gpu/effects/GrSingleTextureEffect.cpp
index 0f3b614..8866153 100644
--- a/src/gpu/effects/GrSingleTextureEffect.cpp
+++ b/src/gpu/effects/GrSingleTextureEffect.cpp
@@ -7,7 +7,6 @@
 
 #include "effects/GrSingleTextureEffect.h"
 #include "gl/GrGLEffect.h"
-#include "gl/GrGLEffectMatrix.h"
 #include "gl/GrGLSL.h"
 #include "gl/GrGLTexture.h"
 #include "GrTBackendEffectFactory.h"
@@ -17,43 +16,25 @@
 public:
     GrGLSingleTextureEffect(const GrBackendEffectFactory& factory, const GrEffect&)
     : INHERITED (factory) {
-        fRequiresTextureMatrix = false;
     }
 
     virtual void emitCode(GrGLShaderBuilder* builder,
                           const GrEffectStage&,
-                          EffectKey key,
+                          EffectKey,
                           const char* vertexCoords,
                           const char* outputColor,
                           const char* inputColor,
                           const TextureSamplerArray& samplers) SK_OVERRIDE {
-        const char* coordName;
-        GrSLType coordType = fEffectMatrix.emitCode(builder, key, vertexCoords, &coordName);
+
         builder->fFSCode.appendf("\t%s = ", outputColor);
-        builder->appendTextureLookupAndModulate(&builder->fFSCode,
-                                                inputColor,
-                                                samplers[0],
-                                                coordName,
-                                                coordType);
+        builder->appendTextureLookupAndModulate(&builder->fFSCode, inputColor, samplers[0]);
         builder->fFSCode.append(";\n");
     }
 
-    static inline EffectKey GenKey(const GrEffectStage& stage, const GrGLCaps&) {
-        const GrSingleTextureEffect& ste =
-            static_cast<const GrSingleTextureEffect&>(*stage.getEffect());
-        return GrGLEffectMatrix::GenKey(ste.getMatrix(),
-                                        stage.getCoordChangeMatrix(),
-                                        ste.texture(0));
-    }
-
-    virtual void setData(const GrGLUniformManager& uman, const GrEffectStage& stage) SK_OVERRIDE {
-        const GrSingleTextureEffect& ste =
-            static_cast<const GrSingleTextureEffect&>(*stage.getEffect());
-        fEffectMatrix.setData(uman, ste.getMatrix(), stage.getCoordChangeMatrix(), ste.texture(0));
-    }
+    static inline EffectKey GenKey(const GrEffectStage&, const GrGLCaps&) { return 0; }
 
 private:
-    GrGLEffectMatrix fEffectMatrix;
+
     typedef GrGLEffect INHERITED;
 };
 
@@ -62,39 +43,16 @@
 GrSingleTextureEffect::GrSingleTextureEffect(GrTexture* texture)
     : INHERITED(1)
     , fTextureAccess(texture) {
-    fMatrix.reset();
 }
 
 GrSingleTextureEffect::GrSingleTextureEffect(GrTexture* texture, bool bilerp)
     : INHERITED(1)
     , fTextureAccess(texture, bilerp) {
-    fMatrix.reset();
 }
 
 GrSingleTextureEffect::GrSingleTextureEffect(GrTexture* texture, const GrTextureParams& params)
     : INHERITED(1)
     , fTextureAccess(texture, params) {
-    fMatrix.reset();
-}
-
-GrSingleTextureEffect::GrSingleTextureEffect(GrTexture* texture, const GrMatrix& m)
-    : INHERITED(1)
-    , fTextureAccess(texture)
-    , fMatrix(m) {
-}
-
-GrSingleTextureEffect::GrSingleTextureEffect(GrTexture* texture, const GrMatrix& m, bool bilerp)
-    : INHERITED(1)
-    , fTextureAccess(texture, bilerp)
-    , fMatrix(m) {
-}
-
-GrSingleTextureEffect::GrSingleTextureEffect(GrTexture* texture,
-                                             const GrMatrix& m,
-                                             const GrTextureParams& params)
-    : INHERITED(1)
-    , fTextureAccess(texture, params)
-    , fMatrix(m) {
 }
 
 GrSingleTextureEffect::~GrSingleTextureEffect() {
@@ -118,6 +76,5 @@
                                             GrTexture* textures[]) {
     int texIdx = random->nextBool() ? GrEffectUnitTest::kSkiaPMTextureIdx :
                                       GrEffectUnitTest::kAlphaTextureIdx;
-    const SkMatrix& matrix = GrEffectUnitTest::TestMatrix(random);
-    return SkNEW_ARGS(GrSingleTextureEffect, (textures[texIdx], matrix));
+    return SkNEW_ARGS(GrSingleTextureEffect, (textures[texIdx]));
 }
diff --git a/src/gpu/effects/GrSingleTextureEffect.h b/src/gpu/effects/GrSingleTextureEffect.h
index 23b416d..346a6f4 100644
--- a/src/gpu/effects/GrSingleTextureEffect.h
+++ b/src/gpu/effects/GrSingleTextureEffect.h
@@ -9,7 +9,6 @@
 #define GrSingleTextureEffect_DEFINED
 
 #include "GrEffect.h"
-#include "GrMatrix.h"
 
 class GrGLSingleTextureEffect;
 
@@ -19,15 +18,13 @@
 class GrSingleTextureEffect : public GrEffect {
 
 public:
-    /** These three constructors assume an identity matrix */
-    GrSingleTextureEffect(GrTexture* texture); /* unfiltered, clamp mode */
-    GrSingleTextureEffect(GrTexture* texture, bool bilerp); /* clamp mode */
-    GrSingleTextureEffect(GrTexture* texture, const GrTextureParams&);
+    /** Uses default texture params (unfiltered, clamp) */
+    GrSingleTextureEffect(GrTexture* texture);
 
-    /** These three constructors take an explicit matrix */
-    GrSingleTextureEffect(GrTexture*, const GrMatrix&); /* unfiltered, clamp mode */
-    GrSingleTextureEffect(GrTexture*, const GrMatrix&, bool bilerp); /* clamp mode */
-    GrSingleTextureEffect(GrTexture*, const GrMatrix&, const GrTextureParams&);
+    /** Uses default tile mode (clamp) */
+    GrSingleTextureEffect(GrTexture* texture, bool bilerp);
+
+    GrSingleTextureEffect(GrTexture* texture, const GrTextureParams&);
 
     virtual ~GrSingleTextureEffect();
 
@@ -35,21 +32,14 @@
 
     static const char* Name() { return "Single Texture"; }
 
-    const GrMatrix& getMatrix() const { return fMatrix; }
-
     typedef GrGLSingleTextureEffect GLEffect;
 
     virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE;
 
-    virtual bool isEqual(const GrEffect& effect) const SK_OVERRIDE {
-        const GrSingleTextureEffect& ste = static_cast<const GrSingleTextureEffect&>(effect);
-        return INHERITED::isEqual(effect) && fMatrix.cheapEqualTo(ste.getMatrix());
-    }
 private:
     GR_DECLARE_EFFECT_TEST;
 
     GrTextureAccess fTextureAccess;
-    GrMatrix        fMatrix;
 
     typedef GrEffect INHERITED;
 };
diff --git a/src/gpu/gl/GrGLEffect.cpp b/src/gpu/gl/GrGLEffect.cpp
index 5e0875b..0bbf1f7 100644
--- a/src/gpu/gl/GrGLEffect.cpp
+++ b/src/gpu/gl/GrGLEffect.cpp
@@ -10,8 +10,6 @@
 
 GrGLEffect::GrGLEffect(const GrBackendEffectFactory& factory)
     : fFactory(factory) {
-
-    fRequiresTextureMatrix = true;
 }
 
 GrGLEffect::~GrGLEffect() {
diff --git a/src/gpu/gl/GrGLEffect.h b/src/gpu/gl/GrGLEffect.h
index 0fd5722..30b8455 100644
--- a/src/gpu/gl/GrGLEffect.h
+++ b/src/gpu/gl/GrGLEffect.h
@@ -51,9 +51,7 @@
 
         @param builder      Interface used to emit code in the shaders.
         @param stage        The effect stage that generated this program stage.
-        @param key          The key that was computed by GenKey() from the generating GrEffect.
-                            Only the bits indicated by GrBackendEffectFactory::kEffectKeyBits are
-                            guaranteed to match the value produced by GenKey();
+        @param key          The key that was computed by EffectKey() from the generating GrEffect.
         @param vertexCoords A vec2 of texture coordinates in the VS, which may be altered. This will
                             be removed soon and stages will be responsible for computing their own
                             coords.
@@ -87,14 +85,7 @@
 
     static EffectKey GenTextureKey(const GrEffect&, const GrGLCaps&);
 
-    bool requiresTextureMatrix() const { return fRequiresTextureMatrix; }
-
-
 protected:
-    // HACK: This is a temporary field that allows GrGLEffect subclasses to opt into the new
-    // shader gen where a texture matrix is not automatically inserted. It defaults to true and is
-    // set to false in a subclass to opt into the new behavior.
-    bool fRequiresTextureMatrix;
 
     const GrBackendEffectFactory& fFactory;
 };
diff --git a/src/gpu/gl/GrGLEffectMatrix.cpp b/src/gpu/gl/GrGLEffectMatrix.cpp
deleted file mode 100644
index 0db87f9..0000000
--- a/src/gpu/gl/GrGLEffectMatrix.cpp
+++ /dev/null
@@ -1,213 +0,0 @@
-/*
- * Copyright 2012 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#include "GrGLEffectMatrix.h"
-#include "GrTexture.h"
-
-GrGLEffect::EffectKey GrGLEffectMatrix::GenKey(const SkMatrix& effectMatrix,
-                                               const SkMatrix& coordChangeMatrix,
-                                               const GrTexture* texture) {
-    SkMatrix::TypeMask type0 = effectMatrix.getType();
-    SkMatrix::TypeMask type1 = coordChangeMatrix.getType();
-
-    static const int kNonTransMask = SkMatrix::kAffine_Mask |
-                                     SkMatrix::kScale_Mask  |
-                                     SkMatrix::kPerspective_Mask;
-    int combinedTypes = type0 | type1;
-
-    bool reverseY = (NULL != texture) && GrSurface::kBottomLeft_Origin == texture->origin();
-
-    if (SkMatrix::kPerspective_Mask & combinedTypes) {
-        return kGeneral_Key;
-    } else if ((kNonTransMask & combinedTypes) || reverseY) {
-        return kNoPersp_Key;
-    } else if (kTrans_Key & combinedTypes) {
-        return kTrans_Key;
-    } else {
-        GrAssert(effectMatrix.isIdentity() && coordChangeMatrix.isIdentity());
-        return kIdentity_Key;
-    }
-}
-
-GrSLType GrGLEffectMatrix::emitCode(GrGLShaderBuilder* builder,
-                                    EffectKey key,
-                                    const char* vertexCoords,
-                                    const char** fsCoordName,
-                                    const char** vsCoordName,
-                                    const char* suffix) {
-    GrSLType varyingType;
-    const char* uniName;
-    key &= kKeyMask;
-    switch (key) {
-        case kIdentity_Key:
-            fUniType = kVoid_GrSLType;
-            varyingType = kVec2f_GrSLType;
-            break;
-        case kTrans_Key:
-            fUniType = kVec2f_GrSLType;
-            uniName = "StageTranslate";
-            varyingType = kVec2f_GrSLType;
-            break;
-        case kNoPersp_Key:
-            fUniType = kMat33f_GrSLType;
-            uniName = "StageMatrix";
-            varyingType = kVec2f_GrSLType;
-            break;
-        case kGeneral_Key:
-            fUniType = kMat33f_GrSLType;
-            uniName = "StageMatrix";
-            varyingType = kVec3f_GrSLType;
-            break;
-        default:
-            GrCrash("Unexpected key.");
-    }
-    SkString suffixedUniName;
-    if (NULL != suffix) {
-        suffixedUniName.append(uniName);
-        suffixedUniName.append(suffix);
-        uniName = suffixedUniName.c_str();
-    }
-    if (kVoid_GrSLType != fUniType) {
-        fUni = builder->addUniform(GrGLShaderBuilder::kVertex_ShaderType,
-                                   fUniType,
-                                   uniName,
-                                   &uniName);
-    }
-
-    const char* varyingName = "StageCoord";
-    SkString suffixedVaryingName;
-    if (NULL != suffix) {
-        suffixedVaryingName.append(varyingName);
-        suffixedVaryingName.append(suffix);
-        varyingName = suffixedVaryingName.c_str();
-    }
-    const char* vsVaryingName;
-    const char* fsVaryingName;
-    builder->addVarying(varyingType, varyingName, &vsVaryingName, &fsVaryingName);
-
-    // varying = matrix * vertex-coords (logically)
-    switch (fUniType) {
-        case kVoid_GrSLType:
-            GrAssert(kVec2f_GrSLType == varyingType);
-            builder->fVSCode.appendf("\t%s = %s;\n", vsVaryingName, vertexCoords);
-            break;
-        case kVec2f_GrSLType:
-            GrAssert(kVec2f_GrSLType == varyingType);
-            builder->fVSCode.appendf("\t%s = %s + %s;\n", vsVaryingName, uniName, vertexCoords);
-            break;
-        case kMat33f_GrSLType: {
-            GrAssert(kVec2f_GrSLType == varyingType || kVec3f_GrSLType == varyingType);
-            if (kVec2f_GrSLType == varyingType) {
-                builder->fVSCode.appendf("\t%s = (%s * vec3(%s, 1)).xy;\n",
-                                         vsVaryingName, uniName, vertexCoords);
-            } else {
-                builder->fVSCode.appendf("\t%s = %s * vec3(%s, 1);\n",
-                                         vsVaryingName, uniName, vertexCoords);
-            }
-            break;
-        }
-        default:
-            GrCrash("Unexpected uniform type.");
-    }
-    if (NULL != vsCoordName) {
-        *vsCoordName = vsVaryingName;
-    }
-    if (NULL != fsCoordName) {
-        *fsCoordName = fsVaryingName;
-    }
-    return varyingType;
-}
-
-/**
-    * This is similar to emitCode except that it performs perspective division in the FS if the
-    * texture coordinates have a w coordinate. The fsCoordName always refers to a vec2f.
-    */
-void GrGLEffectMatrix::emitCodeMakeFSCoords2D(GrGLShaderBuilder* builder,
-                                              EffectKey key,
-                                              const char* vertexCoords,
-                                              const char** fsCoordName,
-                                              const char** vsVaryingName,
-                                              GrSLType* vsVaryingType,
-                                              const char* suffix) {
-    const char* fsVaryingName;
-        
-    GrSLType varyingType = this->emitCode(builder,
-                                          key,
-                                          vertexCoords,
-                                          &fsVaryingName,
-                                          vsVaryingName,
-                                          suffix);
-    if (kVec3f_GrSLType == varyingType) {
-
-        const char* coordName = "coords2D";
-        SkString suffixedCoordName;
-        if (NULL != suffix) {
-            suffixedCoordName.append(coordName);
-            suffixedCoordName.append(suffix);
-            coordName = suffixedCoordName.c_str();
-        }
-        builder->fFSCode.appendf("\tvec2 %s = %s.xy / %s.z;",
-                                    coordName, fsVaryingName, fsVaryingName);
-        if (NULL != fsCoordName) {
-            *fsCoordName = coordName;
-        }
-    } else if(NULL != fsCoordName) {
-        *fsCoordName = fsVaryingName;
-    }
-    if (NULL != vsVaryingType) {
-        *vsVaryingType = varyingType;
-    }
-}
-
-void GrGLEffectMatrix::setData(const GrGLUniformManager& uniformManager,
-                              const SkMatrix& matrix,
-                              const SkMatrix& coordChangeMatrix,
-                              const GrTexture* texture) {
-    GrAssert((GrGLUniformManager::kInvalidUniformHandle == fUni) ==
-                (kVoid_GrSLType == fUniType));
-    switch (fUniType) {
-        case kVoid_GrSLType:
-            GrAssert(matrix.isIdentity());
-            GrAssert(coordChangeMatrix.isIdentity());
-            GrAssert(NULL == texture || GrSurface::kTopLeft_Origin == texture->origin());
-            return;
-        case kVec2f_GrSLType: {
-            GrAssert(SkMatrix::kTranslate_Mask == (matrix.getType() | coordChangeMatrix.getType()));
-            GrAssert(NULL == texture || GrSurface::kTopLeft_Origin == texture->origin());
-            SkScalar tx = matrix[SkMatrix::kMTransX] + coordChangeMatrix[SkMatrix::kMTransX];
-            SkScalar ty = matrix[SkMatrix::kMTransY] + coordChangeMatrix[SkMatrix::kMTransY];
-            if (fPrevMatrix.get(SkMatrix::kMTransX) != tx ||
-                fPrevMatrix.get(SkMatrix::kMTransY) != ty) {
-                uniformManager.set2f(fUni, tx, ty);
-                fPrevMatrix.set(SkMatrix::kMTransX, tx);
-                fPrevMatrix.set(SkMatrix::kMTransY, ty);
-            }
-            break;
-        }
-        case kMat33f_GrSLType: {
-            SkMatrix combined;
-            combined.setConcat(matrix, coordChangeMatrix);
-            if (NULL != texture && GrSurface::kBottomLeft_Origin == texture->origin()) {
-                // combined.postScale(1,-1);
-                // combined.postTranslate(0,1);
-                combined.set(SkMatrix::kMSkewY,
-                    combined[SkMatrix::kMPersp0] - combined[SkMatrix::kMSkewY]);
-                combined.set(SkMatrix::kMScaleY,
-                    combined[SkMatrix::kMPersp1] - combined[SkMatrix::kMScaleY]);
-                combined.set(SkMatrix::kMTransY,
-                    combined[SkMatrix::kMPersp2] - combined[SkMatrix::kMTransY]);
-            }
-            if (!fPrevMatrix.cheapEqualTo(combined)) {
-                uniformManager.setSkMatrix(fUni, combined);
-                fPrevMatrix = combined;
-            }
-            break;
-        }
-        default:
-            GrCrash("Unexpected uniform type.");
-    }
-}
diff --git a/src/gpu/gl/GrGLEffectMatrix.h b/src/gpu/gl/GrGLEffectMatrix.h
deleted file mode 100644
index 9e45f3e..0000000
--- a/src/gpu/gl/GrGLEffectMatrix.h
+++ /dev/null
@@ -1,97 +0,0 @@
-/*
- * Copyright 2012 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#ifndef GrGLEffectMatrix_DEFINED
-#define GrGLEffectMatrix_DEFINED
-
-#include "GrGLEffect.h"
-#include "SkMatrix.h"
-
-class GrTexture;
-class SkRandom;
-
-/**
- * This is a helper to implement a texture matrix in a GrGLEffect.
- */
-class GrGLEffectMatrix {
-public:
-    typedef GrGLEffect::EffectKey EffectKey;
-    /**
-     * The matrix uses kKeyBits of the effect's EffectKey. A GrGLEffect may place these bits at an
-     * arbitrary shift in its final key. However, when GrGLEffectMatrix::emitCode*() code is called
-     * the relevant bits must be in the lower kKeyBits of the key parameter.
-     */
-    enum {
-        kKeyBits = 2,
-        kKeyMask = (1 << kKeyBits) - 1,
-    };
-
-    GrGLEffectMatrix() : fUni(GrGLUniformManager::kInvalidUniformHandle) {
-        fPrevMatrix = SkMatrix::InvalidMatrix();
-    }
-
-    /**
-     * Generates the key for the portion of the code emitted by this class's emitCode() function.
-     * Pass a texture to make GrGLEffectMatrix automatically adjust for the texture's origin. Pass
-     * NULL when not using the EffectMatrix for a texture lookups, or if the GrGLEffect subclass
-     * wants to handle origin adjustments in some other manner. coordChangeMatrix is the matrix
-     * from GrEffectStage.
-     */
-    static EffectKey GenKey(const SkMatrix& effectMatrix,
-                            const SkMatrix& coordChangeMatrix,
-                            const GrTexture*);
-
-    /**
-     * Emits code to implement the matrix in the VS. A varying is added as an output of the VS and
-     * input to the FS. The varying may be either a vec2f or vec3f depending upon whether
-     * perspective interpolation is required or not. The names of the varying in the VS and FS are
-     * are returned as output parameters and the type of the varying is the return value. The suffix
-     * is an optional parameter that can be used to make all variables emitted by the object
-     * unique within a stage. It is only necessary if multiple GrGLEffectMatrix objects are used by
-     * a GrGLEffect.
-     */
-    GrSLType emitCode(GrGLShaderBuilder*,
-                      EffectKey,
-                      const char* vertexCoords,
-                      const char** fsCoordName, /* optional */
-                      const char** vsCoordName = NULL,
-                      const char* suffix = NULL);
-
-    /**
-     * This is similar to emitCode except that it performs perspective division in the FS if the
-     * texture coordinates have a w coordinate. The fsCoordName always refers to a vec2f.
-     */
-    void emitCodeMakeFSCoords2D(GrGLShaderBuilder*,
-                                EffectKey,
-                                const char* vertexCoords,
-                                const char** fsCoordName, /* optional */
-                                const char** vsVaryingName = NULL,
-                                GrSLType* vsVaryingType = NULL,
-                                const char* suffix = NULL);
-    /**
-     * Call from a GrGLEffect's subclass to update the texture matrix. The matrix,
-     * coordChangeMatrix, and texture params should match those used with GenKey.
-     */
-    void setData(const GrGLUniformManager& uniformManager,
-                 const SkMatrix& effectMatrix,
-                 const SkMatrix& coordChangeMatrix,
-                 const GrTexture*);
-
-private:
-    enum {
-        kIdentity_Key   = 0,
-        kTrans_Key      = 1,
-        kNoPersp_Key    = 2,
-        kGeneral_Key    = 3,
-    };
-
-    GrGLUniformManager::UniformHandle fUni;
-    GrSLType                          fUniType;
-    SkMatrix                          fPrevMatrix;
-};
-
-#endif
\ No newline at end of file
diff --git a/src/gpu/gl/GrGLProgram.cpp b/src/gpu/gl/GrGLProgram.cpp
index 120bd1e..cd16d9e 100644
--- a/src/gpu/gl/GrGLProgram.cpp
+++ b/src/gpu/gl/GrGLProgram.cpp
@@ -909,64 +909,57 @@
 
     /// Vertex Shader Stuff
 
-    const char* vertexCoords;
+    // decide whether we need a matrix to transform texture coords and whether the varying needs a
+    // perspective coord.
+    const char* matName = NULL;
+    GrSLType texCoordVaryingType;
+    if (desc.fOptFlags & StageDesc::kIdentityMatrix_OptFlagBit) {
+        texCoordVaryingType = kVec2f_GrSLType;
+    } else {
+        uniforms->fTextureMatrixUni = builder->addUniform(GrGLShaderBuilder::kVertex_ShaderType,
+                                                         kMat33f_GrSLType, "TexM", &matName);
+        builder->getUniformVariable(uniforms->fTextureMatrixUni);
 
-    // Has the effect not yet been updated to insert its own texture matrix if necessary.
-    if (glEffect->requiresTextureMatrix()) {
-        // Decide whether we need a matrix to transform texture coords and whether the varying needs
-        // a perspective coord.
-        const char* matName = NULL;
-        GrSLType texCoordVaryingType;
-        if (desc.fOptFlags & StageDesc::kIdentityMatrix_OptFlagBit) {
+        if (desc.fOptFlags & StageDesc::kNoPerspective_OptFlagBit) {
             texCoordVaryingType = kVec2f_GrSLType;
         } else {
-            uniforms->fTextureMatrixUni = builder->addUniform(GrGLShaderBuilder::kVertex_ShaderType,
-                                                              kMat33f_GrSLType, "TexM", &matName);
-            builder->getUniformVariable(uniforms->fTextureMatrixUni);
-
-            if (desc.fOptFlags & StageDesc::kNoPerspective_OptFlagBit) {
-                texCoordVaryingType = kVec2f_GrSLType;
-            } else {
-                texCoordVaryingType = kVec3f_GrSLType;
-            }
+            texCoordVaryingType = kVec3f_GrSLType;
         }
-        const char *varyingVSName, *varyingFSName;
-        builder->addVarying(texCoordVaryingType,
-                            "Stage",
-                            &varyingVSName,
-                            &varyingFSName);
-        builder->setupTextureAccess(varyingFSName, texCoordVaryingType);
-
-        if (!matName) {
-            GrAssert(kVec2f_GrSLType == texCoordVaryingType);
-            builder->fVSCode.appendf("\t%s = %s;\n", varyingVSName, vsInCoord);
-        } else {
-            // varying = texMatrix * texCoord
-            builder->fVSCode.appendf("\t%s = (%s * vec3(%s, 1))%s;\n",
-                                     varyingVSName, matName, vsInCoord,
-                                     vector_all_coords(GrSLTypeToVecLength(texCoordVaryingType)));
-        }
-        vertexCoords = varyingVSName;
-    } else {
-        vertexCoords = vsInCoord;
     }
+    const char *varyingVSName, *varyingFSName;
+    builder->addVarying(texCoordVaryingType,
+                        "Stage",
+                        &varyingVSName,
+                        &varyingFSName);
+    builder->setupTextureAccess(varyingFSName, texCoordVaryingType);
 
-    // setup texture samplers for gl effect
     int numTextures = effect->numTextures();
     SkSTArray<8, GrGLShaderBuilder::TextureSampler> textureSamplers;
+
     textureSamplers.push_back_n(numTextures);
+
     for (int i = 0; i < numTextures; ++i) {
         textureSamplers[i].init(builder, &effect->textureAccess(i));
         uniforms->fSamplerUniforms.push_back(textureSamplers[i].fSamplerUniform);
     }
 
+    if (!matName) {
+        GrAssert(kVec2f_GrSLType == texCoordVaryingType);
+        builder->fVSCode.appendf("\t%s = %s;\n", varyingVSName, vsInCoord);
+    } else {
+        // varying = texMatrix * texCoord
+        builder->fVSCode.appendf("\t%s = (%s * vec3(%s, 1))%s;\n",
+                                  varyingVSName, matName, vsInCoord,
+                                  vector_all_coords(GrSLTypeToVecLength(texCoordVaryingType)));
+    }
+
     // Enclose custom code in a block to avoid namespace conflicts
     builder->fVSCode.appendf("\t{ // %s\n", glEffect->name());
     builder->fFSCode.appendf("\t{ // %s \n", glEffect->name());
     glEffect->emitCode(builder,
                        stage,
                        desc.fEffectKey,
-                       vertexCoords,
+                       varyingVSName,
                        fsOutColor,
                        fsInColor,
                        textureSamplers);
diff --git a/src/gpu/gl/GrGLUniformManager.cpp b/src/gpu/gl/GrGLUniformManager.cpp
index 7a92d25..684ef8c 100644
--- a/src/gpu/gl/GrGLUniformManager.cpp
+++ b/src/gpu/gl/GrGLUniformManager.cpp
@@ -8,7 +8,6 @@
 #include "gl/GrGLShaderBuilder.h"
 #include "gl/GrGLProgram.h"
 #include "gl/GrGLUniformHandle.h"
-#include "SkMatrix.h"
 
 #define ASSERT_ARRAY_UPLOAD_IN_BOUNDS(UNI, OFFSET, COUNT) \
          GrAssert(offset + arrayCount <= uni.fArrayCount || \
@@ -232,23 +231,6 @@
     }
 }
 
-void GrGLUniformManager::setSkMatrix(UniformHandle u, const SkMatrix& matrix) const {
-    GR_STATIC_ASSERT(SK_SCALAR_IS_FLOAT);
-    GrGLfloat mt[] = {
-        matrix.get(SkMatrix::kMScaleX),
-        matrix.get(SkMatrix::kMSkewY),
-        matrix.get(SkMatrix::kMPersp0),
-        matrix.get(SkMatrix::kMSkewX),
-        matrix.get(SkMatrix::kMScaleY),
-        matrix.get(SkMatrix::kMPersp1),
-        matrix.get(SkMatrix::kMTransX),
-        matrix.get(SkMatrix::kMTransY),
-        matrix.get(SkMatrix::kMPersp2),
-    };
-    this->setMatrix3f(u, mt);
-}
-
-
 void GrGLUniformManager::getUniformLocations(GrGLuint programID, const BuilderUniformArray& uniforms) {
     GrAssert(uniforms.count() == fUniforms.count());
     int count = fUniforms.count();
diff --git a/src/gpu/gl/GrGLUniformManager.h b/src/gpu/gl/GrGLUniformManager.h
index 8f435d3..e9856c6 100644
--- a/src/gpu/gl/GrGLUniformManager.h
+++ b/src/gpu/gl/GrGLUniformManager.h
@@ -15,7 +15,6 @@
 #include "SkTArray.h"
 
 class GrGLContextInfo;
-class SkMatrix;
 
 /** Manages a program's uniforms.
 */
@@ -48,9 +47,6 @@
     void setMatrix3fv(UniformHandle, int offset, int arrayCount, const GrGLfloat matrices[]) const;
     void setMatrix4fv(UniformHandle, int offset, int arrayCount, const GrGLfloat matrices[]) const;
 
-    // convenience method for uploading a SkMatrix to a 3x3 matrix uniform
-    void setSkMatrix(UniformHandle, const SkMatrix&) const;
-
     struct BuilderUniform {
         GrGLShaderVar fVariable;
         uint32_t      fVisibility;