Change signature of SkShader::asNewEffect(), implement for SkBitmapProcShader.

Review URL: https://codereview.appspot.com/7086051

git-svn-id: http://skia.googlecode.com/svn/trunk@7153 2bbb7eff-a529-9590-31e7-b0007b416f81

diff --git a/gyp/core.gyp b/gyp/core.gyp
index 14b14b0..eddb940 100644 (file)
--- a/gyp/core.gyp
+++ b/gyp/core.gyp
@@ -93,6 +93,12 @@
             '../src/core/SkUtilsArm.h',
           ],
         }],
+        ['skia_gpu == 1', {
+          'include_dirs': [
+              '../include/gpu',
+              '../src/gpu',
+          ],
+        }],
       ],
       'direct_dependent_settings': {
         'include_dirs': [

diff --git a/include/core/SkShader.h b/include/core/SkShader.h
index 389be35..d5945af 100644 (file)
--- a/include/core/SkShader.h
+++ b/include/core/SkShader.h
@@ -319,11 +319,10 @@ public:
 
     /**
      *  If the shader subclass has a GrEffect implementation, this installs an effect on the stage.
-     *  A GrContext pointer is required since effects may need to create textures. The stage
-     *  parameter is necessary to set a texture matrix. It will eventually be removed and this
-     *  function will operate as a GrEffect factory.
+     *  The GrContext may be used by the effect to create textures. The GPU device does not call
+     *  setContext. Instead we pass the paint here in case the shader needs paint info.
      */
-    virtual bool asNewEffect(GrContext* context, GrEffectStage* stage) const;
+    virtual GrEffect* asNewEffect(GrContext* context, const SkPaint& paint) const;
 
     //////////////////////////////////////////////////////////////////////////
     //  Factory methods for stock shaders

diff --git a/src/core/SkBitmapProcShader.cpp b/src/core/SkBitmapProcShader.cpp
index 3e41166..23167cc 100644 (file)
--- a/src/core/SkBitmapProcShader.cpp
+++ b/src/core/SkBitmapProcShader.cpp
@@ -336,4 +336,41 @@ bool SkBitmapProcShader::toDumpString(SkString* str) const {
                  gTileModeName[fState.fTileModeY]);
     return true;
 }
+///////////////////////////////////////////////////////////////////////////////
+
+#if SK_SUPPORT_GPU
+
+#include "GrTextureAccess.h"
+#include "effects/GrSingleTextureEffect.h"
+#include "SkGr.h"
+
+GrEffect* SkBitmapProcShader::asNewEffect(GrContext* context, const SkPaint& paint) const {
+    SkMatrix matrix;
+    matrix.setIDiv(fRawBitmap.width(), fRawBitmap.height());
+
+    if (this->hasLocalMatrix()) {
+        SkMatrix inverse;
+        if (!this->getLocalMatrix().invert(&inverse)) {
+            return false;
+        }
+        matrix.preConcat(inverse);
+    }
+    SkShader::TileMode tm[] = {
+        (TileMode)fState.fTileModeX,
+        (TileMode)fState.fTileModeY,
+    };
+
+    // Must set wrap and filter on the sampler before requesting a texture.
+    GrTextureParams params(tm, paint.isFilterBitmap());
+    GrTexture* texture = GrLockCachedBitmapTexture(context, fRawBitmap, &params);
+
+    if (NULL == texture) {
+        SkDebugf("Couldn't convert bitmap to texture.\n");
+        return NULL;
+    }
 
+    GrEffect* effect = SkNEW_ARGS(GrSingleTextureEffect, (texture, matrix, params));
+    GrUnlockCachedBitmapTexture(texture);
+    return effect;
+}
+#endif

diff --git a/src/core/SkBitmapProcShader.h b/src/core/SkBitmapProcShader.h
index cb791d0..fb7ff0b 100644 (file)
--- a/src/core/SkBitmapProcShader.h
+++ b/src/core/SkBitmapProcShader.h
@@ -33,6 +33,10 @@ public:
     virtual bool toDumpString(SkString* str) const;
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkBitmapProcShader)
 
+#if SK_SUPPORT_GPU
+    GrEffect* asNewEffect(GrContext*, const SkPaint&) const SK_OVERRIDE;
+#endif
+
 protected:
     SkBitmapProcShader(SkFlattenableReadBuffer& );
     virtual void flatten(SkFlattenableWriteBuffer&) const SK_OVERRIDE;

diff --git a/src/core/SkShader.cpp b/src/core/SkShader.cpp
index 706c1b7..574dfe3 100644 (file)
--- a/src/core/SkShader.cpp
+++ b/src/core/SkShader.cpp
@@ -173,7 +173,7 @@ SkShader::GradientType SkShader::asAGradient(GradientInfo* info) const {
     return kNone_GradientType;
 }
 
-bool SkShader::asNewEffect(GrContext*, GrEffectStage*) const {
+GrEffect* SkShader::asNewEffect(GrContext*, const SkPaint&) const {
     return false;
 }
 

diff --git a/src/effects/gradients/SkLinearGradient.cpp b/src/effects/gradients/SkLinearGradient.cpp
index 2e80351..1c95f29 100644 (file)
--- a/src/effects/gradients/SkLinearGradient.cpp
+++ b/src/effects/gradients/SkLinearGradient.cpp
@@ -522,12 +522,8 @@ GrEffect* GrLinearGradient::TestCreate(SkRandom* random,
     SkAutoTUnref<SkShader> shader(SkGradientShader::CreateLinear(points,
                                                                  colors, stops, colorCount,
                                                                  tm));
-    GrEffectStage stage;
-    shader->asNewEffect(context, &stage);
-    GrAssert(NULL != stage.getEffect());
-    // const_cast and ref is a hack! Will remove when asNewEffect returns GrEffect*
-    stage.getEffect()->ref();
-    return const_cast<GrEffect*>(stage.getEffect());
+    SkPaint paint;
+    return shader->asNewEffect(context, paint);
 }
 
 /////////////////////////////////////////////////////////////////////
@@ -550,22 +546,21 @@ void GrGLLinearGradient::emitCode(GrGLShaderBuilder* builder,
 
 /////////////////////////////////////////////////////////////////////
 
-bool SkLinearGradient::asNewEffect(GrContext* context, GrEffectStage* stage) const {
+GrEffect* SkLinearGradient::asNewEffect(GrContext* context, const SkPaint&) const {
     SkASSERT(NULL != context && NULL != stage);
     SkMatrix matrix;
     if (!this->getLocalMatrix().invert(&matrix)) {
         return false;
     }
     matrix.postConcat(fPtsToUnit);
-    stage->setEffect(SkNEW_ARGS(GrLinearGradient, (context, *this, matrix, fTileMode)))->unref();
-    return true;
+    return SkNEW_ARGS(GrLinearGradient, (context, *this, matrix, fTileMode));
 }
 
 #else
 
-bool SkLinearGradient::asNewEffect(GrContext*, GrEffectStage*) const {
+GrEffect* SkLinearGradient::asNewEffect(GrContext* context, const SkPaint&) const {
     SkDEBUGFAIL("Should not call in GPU-less build");
-    return false;
+    return NULL;
 }
 
 #endif

diff --git a/src/effects/gradients/SkLinearGradient.h b/src/effects/gradients/SkLinearGradient.h
index 7d87926..29777c1 100644 (file)
--- a/src/effects/gradients/SkLinearGradient.h
+++ b/src/effects/gradients/SkLinearGradient.h
@@ -22,7 +22,7 @@ public:
     virtual void shadeSpan16(int x, int y, uint16_t dstC[], int count) SK_OVERRIDE;
     virtual BitmapType asABitmap(SkBitmap*, SkMatrix*, TileMode*) const SK_OVERRIDE;
     virtual GradientType asAGradient(GradientInfo* info) const SK_OVERRIDE;
-    virtual bool asNewEffect(GrContext* context, GrEffectStage* stage) const SK_OVERRIDE;
+    virtual GrEffect* asNewEffect(GrContext* context, const SkPaint&) const SK_OVERRIDE;
 
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkLinearGradient)
 

diff --git a/src/effects/gradients/SkRadialGradient.cpp b/src/effects/gradients/SkRadialGradient.cpp
index 02a56da..db089f6 100644 (file)
--- a/src/effects/gradients/SkRadialGradient.cpp
+++ b/src/effects/gradients/SkRadialGradient.cpp
@@ -545,12 +545,8 @@ GrEffect* GrRadialGradient::TestCreate(SkRandom* random,
     SkAutoTUnref<SkShader> shader(SkGradientShader::CreateRadial(center, radius,
                                                                  colors, stops, colorCount,
                                                                  tm));
-    GrEffectStage stage;
-    shader->asNewEffect(context, &stage);
-    GrAssert(NULL != stage.getEffect());
-    // const_cast and ref is a hack! Will remove when asNewEffect returns GrEffect*
-    stage.getEffect()->ref();
-    return const_cast<GrEffect*>(stage.getEffect());
+    SkPaint paint;
+    return shader->asNewEffect(context, paint);
 }
 
 /////////////////////////////////////////////////////////////////////
@@ -573,7 +569,7 @@ void GrGLRadialGradient::emitCode(GrGLShaderBuilder* builder,
 
 /////////////////////////////////////////////////////////////////////
 
-bool SkRadialGradient::asNewEffect(GrContext* context, GrEffectStage* stage) const {
+GrEffect* SkRadialGradient::asNewEffect(GrContext* context, const SkPaint&) const {
     SkASSERT(NULL != context && NULL != stage);
 
     SkMatrix matrix;
@@ -581,15 +577,14 @@ bool SkRadialGradient::asNewEffect(GrContext* context, GrEffectStage* stage) con
         return false;
     }
     matrix.postConcat(fPtsToUnit);
-    stage->setEffect(SkNEW_ARGS(GrRadialGradient, (context, *this, matrix, fTileMode)))->unref();
-    return true;
+    return SkNEW_ARGS(GrRadialGradient, (context, *this, matrix, fTileMode));
 }
 
 #else
 
-bool SkRadialGradient::asNewEffect(GrContext*, GrEffectStage*) const {
+GrEffect* SkRadialGradient::asNewEffect(GrContext* context, const SkPaint&) const {
     SkDEBUGFAIL("Should not call in GPU-less build");
-    return false;
+    return NULL;
 }
 
 #endif

diff --git a/src/effects/gradients/SkRadialGradient.h b/src/effects/gradients/SkRadialGradient.h
index cf0d43d..9730df4 100644 (file)
--- a/src/effects/gradients/SkRadialGradient.h
+++ b/src/effects/gradients/SkRadialGradient.h
@@ -24,7 +24,7 @@ public:
                                  SkMatrix* matrix,
                                  TileMode* xy) const SK_OVERRIDE;
     virtual GradientType asAGradient(GradientInfo* info) const SK_OVERRIDE;
-    virtual bool asNewEffect(GrContext* context, GrEffectStage* stage) const SK_OVERRIDE;
+    virtual GrEffect* asNewEffect(GrContext* context, const SkPaint&) const SK_OVERRIDE;
 
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkRadialGradient)
 

diff --git a/src/effects/gradients/SkSweepGradient.cpp b/src/effects/gradients/SkSweepGradient.cpp
index 589cf4a..918bf91 100644 (file)
--- a/src/effects/gradients/SkSweepGradient.cpp
+++ b/src/effects/gradients/SkSweepGradient.cpp
@@ -449,12 +449,8 @@ GrEffect* GrSweepGradient::TestCreate(SkRandom* random,
     int colorCount = RandomGradientParams(random, colors, &stops, &tmIgnored);
     SkAutoTUnref<SkShader> shader(SkGradientShader::CreateSweep(center.fX, center.fY,
                                                                 colors, stops, colorCount));
-    GrEffectStage stage;
-    shader->asNewEffect(context, &stage);
-    GrAssert(NULL != stage.getEffect());
-    // const_cast and ref is a hack! Will remove when asNewEffect returns GrEffect*
-    stage.getEffect()->ref();
-    return const_cast<GrEffect*>(stage.getEffect());
+    SkPaint paint;
+    return shader->asNewEffect(context, paint);
 }
 
 /////////////////////////////////////////////////////////////////////
@@ -476,21 +472,20 @@ void GrGLSweepGradient::emitCode(GrGLShaderBuilder* builder,
 
 /////////////////////////////////////////////////////////////////////
 
-bool SkSweepGradient::asNewEffect(GrContext* context, GrEffectStage* stage) const {
+GrEffect* SkSweepGradient::asNewEffect(GrContext* context, const SkPaint&) const {
     SkMatrix matrix;
     if (!this->getLocalMatrix().invert(&matrix)) {
         return false;
     }
     matrix.postConcat(fPtsToUnit);
-    stage->setEffect(SkNEW_ARGS(GrSweepGradient, (context, *this, matrix)))->unref();
-    return true;
+    return SkNEW_ARGS(GrSweepGradient, (context, *this, matrix));
 }
 
 #else
 
-bool SkSweepGradient::asNewEffect(GrContext*, GrEffectStage*) const {
+GrEffect* SkSweepGradient::asNewEffect(GrContext* context, const SkPaint&) const {
     SkDEBUGFAIL("Should not call in GPU-less build");
-    return false;
+    return NULL;
 }
 
 #endif

diff --git a/src/effects/gradients/SkSweepGradient.h b/src/effects/gradients/SkSweepGradient.h
index a44b4c1..5034b8e 100644 (file)
--- a/src/effects/gradients/SkSweepGradient.h
+++ b/src/effects/gradients/SkSweepGradient.h
@@ -24,7 +24,7 @@ public:
 
     virtual GradientType asAGradient(GradientInfo* info) const SK_OVERRIDE;
 
-    virtual bool asNewEffect(GrContext* context, GrEffectStage* stage) const SK_OVERRIDE;
+    virtual GrEffect* asNewEffect(GrContext* context, const SkPaint&) const SK_OVERRIDE;
 
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkSweepGradient)
 

diff --git a/src/effects/gradients/SkTwoPointConicalGradient.cpp b/src/effects/gradients/SkTwoPointConicalGradient.cpp
index 5c06bce..ab420c6 100644 (file)
--- a/src/effects/gradients/SkTwoPointConicalGradient.cpp
+++ b/src/effects/gradients/SkTwoPointConicalGradient.cpp
@@ -440,12 +440,8 @@ GrEffect* GrConical2Gradient::TestCreate(SkRandom* random,
                                                                           center2, radius2,
                                                                           colors, stops, colorCount,
                                                                           tm));
-    GrEffectStage stage;
-    shader->asNewEffect(context, &stage);
-    GrAssert(NULL != stage.getEffect());
-    // const_cast and ref is a hack! Will remove when asNewEffect returns GrEffect*
-    stage.getEffect()->ref();
-    return const_cast<GrEffect*>(stage.getEffect());
+    SkPaint paint;
+    return shader->asNewEffect(context, paint);
 }
 
 
@@ -688,8 +684,7 @@ GrGLEffect::EffectKey GrGLConical2Gradient::GenKey(const GrEffectStage& s, const
 
 /////////////////////////////////////////////////////////////////////
 
-bool SkTwoPointConicalGradient::asNewEffect(GrContext* context,
-                                            GrEffectStage* stage) const {
+GrEffect* SkTwoPointConicalGradient::asNewEffect(GrContext* context, const SkPaint&) const {
     SkASSERT(NULL != context && NULL != stage);
     SkASSERT(fPtsToUnit.isIdentity());
     // invert the localM, translate to center1, rotate so center2 is on x axis.
@@ -709,16 +704,14 @@ bool SkTwoPointConicalGradient::asNewEffect(GrContext* context,
         matrix.postConcat(rot);
     }
 
-    stage->setEffect(SkNEW_ARGS(GrConical2Gradient, (context, *this, matrix, fTileMode)))->unref();
-
-    return true;
+    return SkNEW_ARGS(GrConical2Gradient, (context, *this, matrix, fTileMode));
 }
 
 #else
 
-bool SkTwoPointConicalGradient::asNewEffect(GrContext*, GrEffectStage*) const {
+GrEffect* SkTwoPointConicalGradient::asNewEffect(GrContext* context, const SkPaint&) const {
     SkDEBUGFAIL("Should not call in GPU-less build");
-    return false;
+    return NULL;
 }
 
 #endif

diff --git a/src/effects/gradients/SkTwoPointConicalGradient.h b/src/effects/gradients/SkTwoPointConicalGradient.h
index d199650..c4ccc05 100644 (file)
--- a/src/effects/gradients/SkTwoPointConicalGradient.h
+++ b/src/effects/gradients/SkTwoPointConicalGradient.h
@@ -61,7 +61,7 @@ public:
                                  SkMatrix* matrix,
                                  TileMode* xy) const;
     virtual SkShader::GradientType asAGradient(GradientInfo* info) const  SK_OVERRIDE;
-    virtual bool asNewEffect(GrContext* context, GrEffectStage* stage) const SK_OVERRIDE;
+    virtual GrEffect* asNewEffect(GrContext* context, const SkPaint& paint) const SK_OVERRIDE;
 
     SkScalar getCenterX1() const { return SkPoint::Distance(fCenter1, fCenter2); }
     SkScalar getStartRadius() const { return fRadius1; }

diff --git a/src/effects/gradients/SkTwoPointRadialGradient.cpp b/src/effects/gradients/SkTwoPointRadialGradient.cpp
index 9aa923b..6615c4d 100644 (file)
--- a/src/effects/gradients/SkTwoPointRadialGradient.cpp
+++ b/src/effects/gradients/SkTwoPointRadialGradient.cpp
@@ -463,7 +463,7 @@ GrEffect* GrRadial2Gradient::TestCreate(SkRandom* random,
     do {
         center2.set(random->nextUScalar1(), random->nextUScalar1());
         radius2 = random->nextUScalar1 ();
-        // There is a bug in two point radial gradients with idenitical radii
+        // There is a bug in two point radial gradients with identical radii
     } while (radius1 == radius2);
 
     SkColor colors[kMaxRandomGradientColors];
@@ -475,12 +475,8 @@ GrEffect* GrRadial2Gradient::TestCreate(SkRandom* random,
                                                                          center2, radius2,
                                                                          colors, stops, colorCount,
                                                                          tm));
-    GrEffectStage stage;
-    shader->asNewEffect(context, &stage);
-    GrAssert(NULL != stage.getEffect());
-    // const_cast and ref is a hack! Will remove when asNewEffect returns GrEffect*
-    stage.getEffect()->ref();
-    return const_cast<GrEffect*>(stage.getEffect());
+    SkPaint paint;
+    return shader->asNewEffect(context, paint);
 }
 
 /////////////////////////////////////////////////////////////////////
@@ -661,8 +657,7 @@ GrGLEffect::EffectKey GrGLRadial2Gradient::GenKey(const GrEffectStage& s, const
 
 /////////////////////////////////////////////////////////////////////
 
-bool SkTwoPointRadialGradient::asNewEffect(GrContext* context,
-                                           GrEffectStage* stage) const {
+GrEffect* SkTwoPointRadialGradient::asNewEffect(GrContext* context, const SkPaint&) const {
     SkASSERT(NULL != context && NULL != stage);
     // invert the localM, translate to center1 (fPtsToUni), rotate so center2 is on x axis.
     SkMatrix matrix;
@@ -680,15 +675,14 @@ bool SkTwoPointRadialGradient::asNewEffect(GrContext* context,
         matrix.postConcat(rot);
     }
 
-    stage->setEffect(SkNEW_ARGS(GrRadial2Gradient, (context, *this, matrix, fTileMode)))->unref();
-    return true;
+    return SkNEW_ARGS(GrRadial2Gradient, (context, *this, matrix, fTileMode));
 }
 
 #else
 
-bool SkTwoPointRadialGradient::asNewEffect(GrContext*, GrEffectStage*) const {
+GrEffect* SkTwoPointRadialGradient::asNewEffect(GrContext* context, const SkPaint&) const {
     SkDEBUGFAIL("Should not call in GPU-less build");
-    return false;
+    return NULL;
 }
 
 #endif

diff --git a/src/effects/gradients/SkTwoPointRadialGradient.h b/src/effects/gradients/SkTwoPointRadialGradient.h
index e7e451a..2f9d66d 100644 (file)
--- a/src/effects/gradients/SkTwoPointRadialGradient.h
+++ b/src/effects/gradients/SkTwoPointRadialGradient.h
@@ -23,7 +23,7 @@ public:
                                  SkMatrix* matrix,
                                  TileMode* xy) const SK_OVERRIDE;
     virtual GradientType asAGradient(GradientInfo* info) const SK_OVERRIDE;
-    virtual bool asNewEffect(GrContext* context, GrEffectStage* stage) const SK_OVERRIDE;
+    virtual GrEffect* asNewEffect(GrContext* context, const SkPaint&) const SK_OVERRIDE;
 
     virtual void shadeSpan(int x, int y, SkPMColor* dstCParam,
                            int count) SK_OVERRIDE;

diff --git a/src/gpu/SkGpuDevice.cpp b/src/gpu/SkGpuDevice.cpp
index 3100e0c..a2c388e 100644 (file)
--- a/src/gpu/SkGpuDevice.cpp
+++ b/src/gpu/SkGpuDevice.cpp
@@ -474,7 +474,6 @@ inline bool skPaint2GrPaintNoShader(SkGpuDevice* dev,
                                     const SkPaint& skPaint,
                                     bool justAlpha,
                                     bool constantColor,
-                                    SkGpuDevice::SkAutoCachedTexture* act,
                                     GrPaint* grPaint) {
 
     grPaint->setDither(skPaint.isDither());
@@ -537,81 +536,36 @@ inline bool skPaint2GrPaintNoShader(SkGpuDevice* dev,
 inline bool skPaint2GrPaintShader(SkGpuDevice* dev,
                                   const SkPaint& skPaint,
                                   bool constantColor,
-                                  SkGpuDevice::SkAutoCachedTexture textures[GrPaint::kMaxColorStages],
                                   GrPaint* grPaint) {
     SkShader* shader = skPaint.getShader();
     if (NULL == shader) {
-        return skPaint2GrPaintNoShader(dev,
-                                       skPaint,
-                                       false,
-                                       constantColor,
-                                       &textures[kColorFilterTextureIdx],
-                                       grPaint);
-    } else if (!skPaint2GrPaintNoShader(dev, skPaint, true, false,
-                                        &textures[kColorFilterTextureIdx], grPaint)) {
+        return skPaint2GrPaintNoShader(dev, skPaint, false, constantColor, grPaint);
+    } else if (!skPaint2GrPaintNoShader(dev, skPaint, true, false, grPaint)) {
         return false;
     }
 
-    GrEffectStage* stage = grPaint->colorStage(kShaderTextureIdx);
-    if (shader->asNewEffect(dev->context(), stage)) {
+    SkAutoTUnref<GrEffect> effect(shader->asNewEffect(dev->context(), skPaint));
+    if (NULL != effect.get()) {
+        grPaint->colorStage(kShaderTextureIdx)->setEffect(effect);
         return true;
     }
 
-    SkBitmap bitmap;
-    SkMatrix matrix;
-    SkShader::TileMode tileModes[2];
-    SkShader::BitmapType bmptype = shader->asABitmap(&bitmap, &matrix, tileModes);
-
-    if (SkShader::kNone_BitmapType == bmptype) {
-        SkShader::GradientInfo info;
-        SkColor                color;
-
-        info.fColors = &color;
-        info.fColorOffsets = NULL;
-        info.fColorCount = 1;
-        if (SkShader::kColor_GradientType == shader->asAGradient(&info)) {
-            SkPaint copy(skPaint);
-            copy.setShader(NULL);
-            // modulate the paint alpha by the shader's solid color alpha
-            U8CPU newA = SkMulDiv255Round(SkColorGetA(color), copy.getAlpha());
-            copy.setColor(SkColorSetA(color, newA));
-            return skPaint2GrPaintNoShader(dev,
-                                           copy,
-                                           false,
-                                           constantColor,
-                                           &textures[kColorFilterTextureIdx],
-                                           grPaint);
-        }
-        return false;
-    }
+    // We still don't have SkColorShader::asNewEffect() implemented.
+    SkShader::GradientInfo info;
+    SkColor                color;
 
-    // since our texture coords will be in local space, we whack the texture
-    // matrix to map them back into 0...1 before we load it
-    if (shader->hasLocalMatrix()) {
-        SkMatrix inverse;
-        if (!shader->getLocalMatrix().invert(&inverse)) {
-            return false;
-        }
-        matrix.preConcat(inverse);
+    info.fColors = &color;
+    info.fColorOffsets = NULL;
+    info.fColorCount = 1;
+    if (SkShader::kColor_GradientType == shader->asAGradient(&info)) {
+        SkPaint copy(skPaint);
+        copy.setShader(NULL);
+        // modulate the paint alpha by the shader's solid color alpha
+        U8CPU newA = SkMulDiv255Round(SkColorGetA(color), copy.getAlpha());
+        copy.setColor(SkColorSetA(color, newA));
+        return skPaint2GrPaintNoShader(dev, copy, false, constantColor, grPaint);
     }
-
-    // Must set wrap and filter on the sampler before requesting a texture.
-    GrTextureParams params(tileModes, skPaint.isFilterBitmap());
-    GrTexture* texture = textures[kShaderTextureIdx].set(dev, bitmap, &params);
-
-    if (NULL == texture) {
-        SkDebugf("Couldn't convert bitmap to texture.\n");
-        return false;
-    }
-
-    if (SkShader::kDefault_BitmapType == bmptype) {
-        SkScalar sx = SkFloatToScalar(1.f / bitmap.width());
-        SkScalar sy = SkFloatToScalar(1.f / bitmap.height());
-        matrix.postScale(sx, sy);
-    }
-    stage->setEffect(SkNEW_ARGS(GrSingleTextureEffect, (texture, matrix, params)))->unref();
-
-    return true;
+    return false;
 }
 }
 
@@ -625,12 +579,7 @@ void SkGpuDevice::drawPaint(const SkDraw& draw, const SkPaint& paint) {
     CHECK_SHOULD_DRAW(draw, false);
 
     GrPaint grPaint;
-    SkAutoCachedTexture textures[GrPaint::kMaxColorStages];
-    if (!skPaint2GrPaintShader(this,
-                               paint,
-                               true,
-                               textures,
-                               &grPaint)) {
+    if (!skPaint2GrPaintShader(this, paint, true, &grPaint)) {
         return;
     }
 
@@ -661,12 +610,7 @@ void SkGpuDevice::drawPoints(const SkDraw& draw, SkCanvas::PointMode mode,
     }
 
     GrPaint grPaint;
-    SkAutoCachedTexture textures[GrPaint::kMaxColorStages];
-    if (!skPaint2GrPaintShader(this,
-                               paint,
-                               true,
-                               textures,
-                               &grPaint)) {
+    if (!skPaint2GrPaintShader(this, paint, true, &grPaint)) {
         return;
     }
 
@@ -723,12 +667,7 @@ void SkGpuDevice::drawRect(const SkDraw& draw, const SkRect& rect,
     }
 
     GrPaint grPaint;
-    SkAutoCachedTexture textures[GrPaint::kMaxColorStages];
-    if (!skPaint2GrPaintShader(this,
-                               paint,
-                               true,
-                               textures,
-                               &grPaint)) {
+    if (!skPaint2GrPaintShader(this, paint, true, &grPaint)) {
         return;
     }
     fContext->drawRect(grPaint, rect, doStroke ? width : -1);
@@ -966,12 +905,7 @@ void SkGpuDevice::drawPath(const SkDraw& draw, const SkPath& origSrcPath,
     CHECK_SHOULD_DRAW(draw, false);
 
     GrPaint grPaint;
-    SkAutoCachedTexture textures[GrPaint::kMaxColorStages];
-    if (!skPaint2GrPaintShader(this,
-                               paint,
-                               true,
-                               textures,
-                               &grPaint)) {
+    if (!skPaint2GrPaintShader(this, paint, true, &grPaint)) {
         return;
     }
 
@@ -1199,10 +1133,9 @@ void SkGpuDevice::drawBitmapCommon(const SkDraw& draw,
     }
 
     GrPaint grPaint;
-    SkAutoCachedTexture colorLutTexture;
 
     bool alphaOnly = !(SkBitmap::kA8_Config == bitmap.config());
-    if (!skPaint2GrPaintNoShader(this, paint, alphaOnly, false, &colorLutTexture, &grPaint)) {
+    if (!skPaint2GrPaintNoShader(this, paint, alphaOnly, false, &grPaint)) {
         return;
     }
     GrTextureParams params;
@@ -1472,8 +1405,7 @@ void SkGpuDevice::drawSprite(const SkDraw& draw, const SkBitmap& bitmap,
     int h = bitmap.height();
 
     GrPaint grPaint;
-    SkAutoCachedTexture colorLutTexture;
-    if(!skPaint2GrPaintNoShader(this, paint, true, false, &colorLutTexture, &grPaint)) {
+    if(!skPaint2GrPaintNoShader(this, paint, true, false, &grPaint)) {
         return;
     }
 
@@ -1550,10 +1482,9 @@ void SkGpuDevice::drawDevice(const SkDraw& draw, SkDevice* device,
     CHECK_SHOULD_DRAW(draw, true);
 
     GrPaint grPaint;
-    SkAutoCachedTexture colorLutTexture;
     grPaint.colorStage(kBitmapTextureIdx)->reset();
     if (!dev->bindDeviceAsTexture(&grPaint) ||
-        !skPaint2GrPaintNoShader(this, paint, true, false, &colorLutTexture, &grPaint)) {
+        !skPaint2GrPaintNoShader(this, paint, true, false, &grPaint)) {
         return;
     }
 
@@ -1648,23 +1579,13 @@ void SkGpuDevice::drawVertices(const SkDraw& draw, SkCanvas::VertexMode vmode,
     CHECK_SHOULD_DRAW(draw, false);
 
     GrPaint grPaint;
-    SkAutoCachedTexture textures[GrPaint::kMaxColorStages];
     // we ignore the shader if texs is null.
     if (NULL == texs) {
-        if (!skPaint2GrPaintNoShader(this,
-                                     paint,
-                                     false,
-                                     NULL == colors,
-                                     &textures[kColorFilterTextureIdx],
-                                     &grPaint)) {
+        if (!skPaint2GrPaintNoShader(this, paint, false, NULL == colors, &grPaint)) {
             return;
         }
     } else {
-        if (!skPaint2GrPaintShader(this,
-                                   paint,
-                                   NULL == colors,
-                                   textures,
-                                   &grPaint)) {
+        if (!skPaint2GrPaintShader(this, paint, NULL == colors, &grPaint)) {
             return;
         }
     }
@@ -1763,12 +1684,7 @@ void SkGpuDevice::drawText(const SkDraw& draw, const void* text,
         SkDraw myDraw(draw);
 
         GrPaint grPaint;
-        SkAutoCachedTexture textures[GrPaint::kMaxColorStages];
-        if (!skPaint2GrPaintShader(this,
-                                   paint,
-                                   true,
-                                   textures,
-                                   &grPaint)) {
+        if (!skPaint2GrPaintShader(this, paint, true, &grPaint)) {
             return;
         }
         GrTextContext context(fContext, grPaint);
@@ -1791,12 +1707,7 @@ void SkGpuDevice::drawPosText(const SkDraw& draw, const void* text,
         SkDraw myDraw(draw);
 
         GrPaint grPaint;
-        SkAutoCachedTexture textures[GrPaint::kMaxColorStages];
-        if (!skPaint2GrPaintShader(this,
-                                   paint,
-                                   true,
-                                   textures,
-                                   &grPaint)) {
+        if (!skPaint2GrPaintShader(this, paint, true, &grPaint)) {
             return;
         }
         GrTextContext context(fContext, grPaint);