Use asNewCustomStage instead of asABitmap in SkGpuDevice, also removed now-unecessary twoPointRadialParams parameter from asABitmap.

In SkGpuDevice we still fall back on using asABitmap for effects that don't have asNewCustomStage implemented, but it still simplifies things a fair amount.
Review URL: https://codereview.appspot.com/6430060

git-svn-id: http://skia.googlecode.com/svn/trunk@4755 2bbb7eff-a529-9590-31e7-b0007b416f81

include/core/SkColorShader.h

@@ -44,8 +44,7 @@ public:
     // we return false for this, use asAGradient
     virtual BitmapType asABitmap(SkBitmap* outTexture,
                                  SkMatrix* outMatrix,
-                                 TileMode xy[2],
-                                 SkScalar* twoPointRadialParams) const SK_OVERRIDE;
+                                 TileMode xy[2]) const SK_OVERRIDE;
 
     virtual GradientType asAGradient(GradientInfo* info) const SK_OVERRIDE;
 

include/core/SkShader.h

@@ -246,7 +246,7 @@ public:
                                     about the first point.
     */
     virtual BitmapType asABitmap(SkBitmap* outTexture, SkMatrix* outMatrix,
-                         TileMode xy[2], SkScalar* twoPointRadialParams) const;
+                         TileMode xy[2]) const;
 
     /**
      *  If the shader subclass can be represented as a gradient, asAGradient

src/core/SkBitmapProcShader.cpp

@@ -53,8 +53,7 @@ void SkBitmapProcShader::endSession() {
 
 SkShader::BitmapType SkBitmapProcShader::asABitmap(SkBitmap* texture,
                                                    SkMatrix* texM,
-                                                   TileMode xy[],
-                                       SkScalar* twoPointRadialParams) const {
+                                                   TileMode xy[]) const {
     if (texture) {
         *texture = fRawBitmap;
     }

src/core/SkBitmapProcShader.h

@@ -25,8 +25,7 @@ public:
     virtual void shadeSpan16(int x, int y, uint16_t dstC[], int count);
     virtual void beginSession();
     virtual void endSession();
-    virtual BitmapType asABitmap(SkBitmap*, SkMatrix*, TileMode*,
-                                 SkScalar* twoPointRadialParams) const;
+    virtual BitmapType asABitmap(SkBitmap*, SkMatrix*, TileMode*) const;
 
     static bool CanDo(const SkBitmap&, TileMode tx, TileMode ty);
 

src/core/SkShader.cpp

@@ -192,7 +192,7 @@ SkShader::MatrixClass SkShader::ComputeMatrixClass(const SkMatrix& mat) {
 //////////////////////////////////////////////////////////////////////////////
 
 SkShader::BitmapType SkShader::asABitmap(SkBitmap*, SkMatrix*,
-                                         TileMode*, SkScalar*) const {
+                                         TileMode*) const {
     return kNone_BitmapType;
 }
 
@@ -316,8 +316,7 @@ void SkColorShader::shadeSpanAlpha(int x, int y, uint8_t alpha[], int count) {
 
 // if we had a asAColor method, that would be more efficient...
 SkShader::BitmapType SkColorShader::asABitmap(SkBitmap* bitmap, SkMatrix* matrix,
-                                              TileMode modes[],
-                                      SkScalar* twoPointRadialParams) const {
+                                              TileMode modes[]) const {
     return kNone_BitmapType;
 }
 

src/device/xps/SkXPSDevice.cpp

@@ -1014,11 +1014,9 @@ HRESULT SkXPSDevice::createXpsBrush(const SkPaint& skPaint,
     SkBitmap outTexture;
     SkMatrix outMatrix;
     SkShader::TileMode xy[2];
-    SkScalar twoPointRadialParams[3];
     SkShader::BitmapType bitmapType = shader->asABitmap(&outTexture,
                                                         &outMatrix,
-                                                        xy,
-                                                        twoPointRadialParams);
+                                                        xy);
     switch (bitmapType) {
         case SkShader::kNone_BitmapType:
             break;

src/effects/SkGradientShader.cpp

@@ -111,7 +111,6 @@ static const TileProc gTileProcs[] = {
     mirror_tileproc
 };
 
-///////////////////////////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////////////////////////
 
 class Gradient_Shader : public SkShader {
@@ -796,8 +795,7 @@ public:
     virtual bool setContext(const SkBitmap&, const SkPaint&, const SkMatrix&) SK_OVERRIDE;
     virtual void shadeSpan(int x, int y, SkPMColor dstC[], int count) SK_OVERRIDE;
     virtual void shadeSpan16(int x, int y, uint16_t dstC[], int count) SK_OVERRIDE;
-    virtual BitmapType asABitmap(SkBitmap*, SkMatrix*, TileMode*,
-                             SkScalar* twoPointRadialParams) const SK_OVERRIDE;
+    virtual BitmapType asABitmap(SkBitmap*, SkMatrix*, TileMode*) const SK_OVERRIDE;
     virtual GradientType asAGradient(GradientInfo* info) const SK_OVERRIDE;
     virtual GrCustomStage* asNewCustomStage(GrContext* context, 
                                             GrSamplerState* sampler) const SK_OVERRIDE;
@@ -1025,8 +1023,7 @@ void Linear_Gradient::shadeSpan(int x, int y, SkPMColor* SK_RESTRICT dstC,
 
 SkShader::BitmapType Linear_Gradient::asABitmap(SkBitmap* bitmap,
                                                 SkMatrix* matrix,
-                                                TileMode xy[],
-                                        SkScalar* twoPointRadialParams) const {
+                                                TileMode xy[]) const {
     if (bitmap) {
         this->commonAsABitmap(bitmap);
     }
@@ -1056,7 +1053,7 @@ GrCustomStage* Linear_Gradient::asNewCustomStage(GrContext* context,
     sampler->setWrapX(sk_tile_mode_to_grwrap(fTileMode));
     sampler->setWrapY(sk_tile_mode_to_grwrap(kClamp_TileMode));
     sampler->setFilter(GrSamplerState::kBilinear_Filter);
-    return SkNEW_ARGS(GrLinearGradient, (context, *this));
+    return SkNEW_ARGS(GrLinearGradient, (context, *this, sampler));
 }
 
 static void dither_memset16(uint16_t dst[], uint16_t value, uint16_t other,
@@ -1442,9 +1439,7 @@ public:
 
     virtual BitmapType asABitmap(SkBitmap* bitmap,
                                  SkMatrix* matrix,
-                                 TileMode* xy,
-                                 SkScalar* twoPointRadialParams)
-            const SK_OVERRIDE {
+                                 TileMode* xy) const SK_OVERRIDE {
         if (bitmap) {
             this->commonAsABitmap(bitmap);
         }
@@ -1476,7 +1471,7 @@ public:
         sampler->setWrapX(sk_tile_mode_to_grwrap(fTileMode));
         sampler->setWrapY(sk_tile_mode_to_grwrap(kClamp_TileMode));
         sampler->setFilter(GrSamplerState::kBilinear_Filter);
-        return SkNEW_ARGS(GrRadialGradient, (context, *this));
+        return SkNEW_ARGS(GrRadialGradient, (context, *this, sampler));
     }
 
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(Radial_Gradient)
@@ -1886,13 +1881,12 @@ public:
 
     virtual BitmapType asABitmap(SkBitmap* bitmap,
                                  SkMatrix* matrix,
-                                 TileMode* xy,
-                                 SkScalar* twoPointRadialParams) const {
+                                 TileMode* xy) const {
         if (bitmap) {
             this->commonAsABitmap(bitmap);
         }
         SkScalar diffL = 0; // just to avoid gcc warning
-        if (matrix || twoPointRadialParams) {
+        if (matrix) {
             diffL = SkScalarSqrt(SkScalarSquare(fDiff.fX) +
                                  SkScalarSquare(fDiff.fY));
         }
@@ -1910,11 +1904,6 @@ public:
             xy[0] = fTileMode;
             xy[1] = kClamp_TileMode;
         }
-        if (NULL != twoPointRadialParams) {
-            twoPointRadialParams[0] = diffL;
-            twoPointRadialParams[1] = fStartRadius;
-            twoPointRadialParams[2] = fDiffRadius;
-        }
         return kTwoPointRadial_BitmapType;
     }
 
@@ -1944,7 +1933,8 @@ public:
         sampler->setWrapX(sk_tile_mode_to_grwrap(fTileMode));
         sampler->setWrapY(sk_tile_mode_to_grwrap(kClamp_TileMode));
         sampler->setFilter(GrSamplerState::kBilinear_Filter);
-        return SkNEW_ARGS(GrRadial2Gradient, (context, *this));
+        return SkNEW_ARGS(GrRadial2Gradient, (context, *this, sampler, 
+            diffLen, fStartRadius, fDiffRadius));
     }
 
     virtual void shadeSpan(int x, int y, SkPMColor* dstCParam,
@@ -2349,8 +2339,7 @@ public:
 
     virtual BitmapType asABitmap(SkBitmap* bitmap,
                                  SkMatrix* matrix,
-                                 TileMode* xy,
-                                 SkScalar* twoPointRadialParams) const {
+                                 TileMode* xy) const {
 
         SkPoint diff = fCenter2 - fCenter1;
         SkScalar diffRadius = fRadius2 - fRadius1;
@@ -2360,7 +2349,7 @@ public:
         if (bitmap) {
             this->commonAsABitmap(bitmap);
         }
-        if (matrix || twoPointRadialParams) {
+        if (matrix) {
             diffLen = diff.length();
         }
         if (matrix) {
@@ -2378,12 +2367,6 @@ public:
             xy[0] = fTileMode;
             xy[1] = kClamp_TileMode;
         }
-        if (NULL != twoPointRadialParams) {
-            twoPointRadialParams[0] = diffLen;
-            twoPointRadialParams[1] = startRadius;
-            twoPointRadialParams[2] = diffRadius;
-        }
-
         return kTwoPointConical_BitmapType;
     }
 
@@ -2415,7 +2398,8 @@ public:
         sampler->setWrapX(sk_tile_mode_to_grwrap(fTileMode));
         sampler->setWrapY(sk_tile_mode_to_grwrap(kClamp_TileMode));
         sampler->setFilter(GrSamplerState::kBilinear_Filter);
-        return SkNEW_ARGS(GrConical2Gradient, (context, *this));
+        return SkNEW_ARGS(GrConical2Gradient, (context, *this, sampler, 
+                          diffLen, fRadius1, fRadius2 - fRadius1));
     }
 
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(Two_Point_Conical_Gradient)
@@ -2462,8 +2446,7 @@ public:
 
     virtual BitmapType asABitmap(SkBitmap* bitmap,
                                  SkMatrix* matrix,
-                                 TileMode* xy,
-                                 SkScalar* twoPointRadialParams) const SK_OVERRIDE {
+                                 TileMode* xy) const SK_OVERRIDE {
         if (bitmap) {
             this->commonAsABitmap(bitmap);
         }
@@ -2491,7 +2474,7 @@ public:
         sampler->setWrapX(sk_tile_mode_to_grwrap(fTileMode));
         sampler->setWrapY(sk_tile_mode_to_grwrap(kClamp_TileMode));
         sampler->setFilter(GrSamplerState::kBilinear_Filter);
-        return SkNEW_ARGS(GrSweepGradient, (context, *this));
+        return SkNEW_ARGS(GrSweepGradient, (context, *this, sampler));
     }
 
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(Sweep_Gradient)

src/gpu/SkGpuDevice.cpp

@@ -596,12 +596,26 @@ inline bool skPaint2GrPaintShader(SkGpuDevice* dev,
         return false;
     }
 
+    GrSamplerState* sampler = grPaint->textureSampler(kShaderTextureIdx);
+    GrCustomStage* stage = shader->asNewCustomStage(dev->context(), sampler);
+
+    if (NULL != stage) {
+        sampler->setCustomStage(stage)->unref();
+        SkMatrix localM;
+        if (shader->getLocalMatrix(&localM)) {
+            SkMatrix inverse;
+            if (localM.invert(&inverse)) {
+                sampler->matrix()->preConcat(inverse);
+            }
+        }
+        return true;
+    }
+
     SkBitmap bitmap;
-    SkMatrix* matrix = grPaint->textureSampler(kShaderTextureIdx)->matrix();
+    SkMatrix* matrix = sampler->matrix();
     SkShader::TileMode tileModes[2];
-    SkScalar twoPointParams[3];
     SkShader::BitmapType bmptype = shader->asABitmap(&bitmap, matrix,
-                                                     tileModes, twoPointParams);
+                                                     tileModes);
 
     if (SkShader::kNone_BitmapType == bmptype) {
         SkShader::GradientInfo info;
@@ -627,13 +641,10 @@ inline bool skPaint2GrPaintShader(SkGpuDevice* dev,
     }
 
     // Must set wrap and filter on the sampler before requesting a texture.
-    GrSamplerState* sampler = grPaint->textureSampler(kShaderTextureIdx);
     sampler->setWrapX(sk_tile_mode_to_grwrap(tileModes[0]));
     sampler->setWrapY(sk_tile_mode_to_grwrap(tileModes[1]));
-    GrSamplerState::Filter filter;
-    if (SkShader::kDefault_BitmapType == bmptype && !skPaint.isFilterBitmap()) {
-        filter = GrSamplerState::kNearest_Filter;
-    } else {
+    GrSamplerState::Filter filter = GrSamplerState::kNearest_Filter;
+    if (skPaint.isFilterBitmap()) {
         filter = GrSamplerState::kBilinear_Filter;
     }
     sampler->setFilter(filter);
@@ -644,34 +655,7 @@ inline bool skPaint2GrPaintShader(SkGpuDevice* dev,
         return false;
     }
 
-    switch (bmptype) {
-        case SkShader::kRadial_BitmapType:
-            sampler->setCustomStage(SkNEW_ARGS(GrRadialGradient, (texture)))->unref();
-            break;
-        case SkShader::kSweep_BitmapType:
-            sampler->setCustomStage(SkNEW_ARGS(GrSweepGradient, (texture)))->unref();
-            break;
-        case SkShader::kTwoPointRadial_BitmapType:
-            sampler->setCustomStage(SkNEW_ARGS(GrRadial2Gradient,
-                         (texture,
-                          twoPointParams[0],
-                          twoPointParams[1],
-                          twoPointParams[2] < 0)))->unref();
-            break;
-        case SkShader::kTwoPointConical_BitmapType:
-            sampler->setCustomStage(SkNEW_ARGS(GrConical2Gradient,
-                                               (texture,
-                                                twoPointParams[0],
-                                                twoPointParams[1],
-                                                twoPointParams[2])))->unref();
-            break;
-        case SkShader::kLinear_BitmapType:
-            sampler->setCustomStage(SkNEW_ARGS(GrLinearGradient, (texture)))->unref();
-            break;
-        default:
     sampler->setCustomStage(SkNEW_ARGS(GrSingleTextureEffect, (texture)))->unref();
-            break;
-    }
 
     // since our texture coords will be in local space, we wack the texture
     // matrix to map them back into 0...1 before we load it
@@ -686,9 +670,6 @@ inline bool skPaint2GrPaintShader(SkGpuDevice* dev,
         GrScalar sx = SkFloatToScalar(1.f / bitmap.width());
         GrScalar sy = SkFloatToScalar(1.f / bitmap.height());
         matrix->postScale(sx, sy);
-    } else if (SkShader::kRadial_BitmapType == bmptype) {
-        GrScalar s = SkFloatToScalar(1.f / bitmap.width());
-        matrix->postScale(s, s);
     }
 
     return true;

src/gpu/effects/GrGradientEffects.cpp

@@ -9,6 +9,7 @@
 #include "gl/GrGLProgramStage.h"
 #include "GrProgramStageFactory.h"
 #include "SkGr.h"
+#include "../core/SkShader.h"
 
 // Base class for GL gradient custom stages
 class GrGLGradientStage : public GrGLProgramStage {
@@ -51,7 +52,9 @@ GrGradientEffect::GrGradientEffect(GrTexture* texture)
     SkSafeRef(fTexture);
 }
 
-GrGradientEffect::GrGradientEffect(GrContext* ctx, const SkShader& shader)
+GrGradientEffect::GrGradientEffect(GrContext* ctx, 
+                                   const SkShader& shader,
+                                   GrSamplerState* sampler)
                                    : fTexture (NULL)
                                    , fUseTexture (false) {
     // TODO: check for simple cases where we don't need a texture:
@@ -60,16 +63,10 @@ GrGradientEffect::GrGradientEffect(GrContext* ctx, const SkShader& shader)
     //if (info.fColorCount == 2) { ...
 
     SkBitmap bitmap;
-    shader.asABitmap(&bitmap, NULL, NULL, NULL);
-
-    // Note: we just construct a default sampler state here, which isn't great,
-    // however, as long as the bitmap has power-of-two dimensions, which should
-    // be the case for gradient bitmaps, it should be fine
-    GrAssert(SkIsPow2(bitmap.width()) && SkIsPow2(bitmap.height()));
-    GrSamplerState sampler;
+    shader.asABitmap(&bitmap, NULL, NULL);
 
     GrContext::TextureCacheEntry entry = GrLockCachedBitmapTexture(ctx, bitmap,
-                                                                   &sampler);
+                                                                   sampler);
     fTexture = entry.texture();
     SkSafeRef(fTexture);
     fUseTexture = true;
@@ -133,8 +130,10 @@ GrLinearGradient::GrLinearGradient(GrTexture* texture)
                   : INHERITED(texture) { 
 }
 
-GrLinearGradient::GrLinearGradient(GrContext* ctx, const SkShader& shader)
-                  : INHERITED(ctx, shader) {
+GrLinearGradient::GrLinearGradient(GrContext* ctx, 
+                                   const SkShader& shader,
+                                   GrSamplerState* sampler)
+                                   : INHERITED(ctx, shader, sampler) {
 }
 
 GrLinearGradient::~GrLinearGradient() {
@@ -188,8 +187,9 @@ GrRadialGradient::GrRadialGradient(GrTexture* texture)
 
 }
 
-GrRadialGradient::GrRadialGradient(GrContext* ctx, const SkShader& shader)
-    : INHERITED(ctx, shader) {
+GrRadialGradient::GrRadialGradient(GrContext* ctx, const SkShader& shader,
+                                   GrSamplerState* sampler)
+                                   : INHERITED(ctx, shader, sampler) {
 }
 
 GrRadialGradient::~GrRadialGradient() {
@@ -445,17 +445,16 @@ GrRadial2Gradient::GrRadial2Gradient(GrTexture* texture,
 
 }
 
-GrRadial2Gradient::GrRadial2Gradient(GrContext* ctx, const SkShader& shader)
-    : INHERITED(ctx, shader) {
-    SkShader::GradientInfo info;
-    info.fColorCount = 0;
-    shader.asAGradient(&info);
-    fCenterX1 = SkPoint::Distance(info.fPoint[0], info.fPoint[1]);
-    SkScalar diffRadius = info.fRadius[1] - info.fRadius[0];
-    fPosRoot = diffRadius < 0;
-    SkScalar inv = 0 == diffRadius ? 0 : SkScalarInvert(diffRadius);
-    fRadius0 = SkScalarMul(info.fRadius[0], inv);
-    fCenterX1 = SkScalarMul(fCenterX1, inv);
+GrRadial2Gradient::GrRadial2Gradient(GrContext* ctx, 
+                                     const SkShader& shader, 
+                                     GrSamplerState* sampler,
+                                     SkScalar center,
+                                     SkScalar startRadius,
+                                     SkScalar diffRadius)
+                                     : INHERITED(ctx, shader, sampler)
+                                     , fCenterX1(center)
+                                     , fRadius0(startRadius) 
+                                     , fPosRoot(diffRadius < 0) {
 }
 
 GrRadial2Gradient::~GrRadial2Gradient() {
@@ -776,14 +775,16 @@ GrConical2Gradient::GrConical2Gradient(GrTexture* texture,
 
 }
 
-GrConical2Gradient::GrConical2Gradient(GrContext* ctx, const SkShader& shader)
-    : INHERITED(ctx, shader) {
-    SkShader::GradientInfo info;
-    info.fColorCount = 0;
-    shader.asAGradient(&info);
-    fCenterX1 = SkPoint::Distance(info.fPoint[0], info.fPoint[1]);
-    fRadius0 = info.fRadius[0];
-    fDiffRadius = info.fRadius[1] - info.fRadius[0];
+GrConical2Gradient::GrConical2Gradient(GrContext* ctx, 
+                                       const SkShader& shader,
+                                       GrSamplerState* sampler,
+                                       SkScalar center,
+                                       SkScalar startRadius,
+                                       SkScalar diffRadius)
+                                       : INHERITED(ctx, shader, sampler) 
+                                       , fCenterX1(center)
+                                       , fRadius0(startRadius)
+                                       , fDiffRadius(diffRadius) {
 }
 
 GrConical2Gradient::~GrConical2Gradient() {
@@ -846,8 +847,9 @@ GrSweepGradient::GrSweepGradient(GrTexture* texture)
 
 }
 
-GrSweepGradient::GrSweepGradient(GrContext* ctx, const SkShader& shader) 
-    : INHERITED(ctx, shader) {
+GrSweepGradient::GrSweepGradient(GrContext* ctx, const SkShader& shader,
+                                 GrSamplerState* sampler) 
+                                 : INHERITED(ctx, shader, sampler) {
 }
 
 GrSweepGradient::~GrSweepGradient() {

src/gpu/effects/GrGradientEffects.h

@@ -11,7 +11,9 @@
 #include "GrSingleTextureEffect.h"
 #include "GrTypes.h"
 #include "GrScalar.h"
-#include "SkShader.h"
+
+class GrSamplerState;
+class SkShader;
 
 /*
  * The intepretation of the texture matrix depends on the sample mode. The
@@ -41,7 +43,8 @@ class GrGradientEffect : public GrCustomStage {
 public:
 
     GrGradientEffect(GrTexture* texture);
-    GrGradientEffect(GrContext* ctx, const SkShader& shader);
+    GrGradientEffect(GrContext* ctx, const SkShader& shader, 
+                     GrSamplerState* sampler);
 
     virtual ~GrGradientEffect();
 
@@ -66,7 +69,8 @@ class GrLinearGradient : public GrGradientEffect {
 public:
 
     GrLinearGradient(GrTexture* texture);
-    GrLinearGradient(GrContext* ctx, const SkShader& shader);
+    GrLinearGradient(GrContext* ctx, const SkShader& shader,
+                     GrSamplerState* sampler);
     virtual ~GrLinearGradient();
 
     static const char* Name() { return "Linear Gradient"; }
@@ -86,7 +90,8 @@ class GrRadialGradient : public GrGradientEffect {
 public:
 
     GrRadialGradient(GrTexture* texture);
-    GrRadialGradient(GrContext* ctx, const SkShader& shader);
+    GrRadialGradient(GrContext* ctx, const SkShader& shader,
+                     GrSamplerState* sampler);
     virtual ~GrRadialGradient();
 
     static const char* Name() { return "Radial Gradient"; }
@@ -106,7 +111,9 @@ class GrRadial2Gradient : public GrGradientEffect {
 public:
 
     GrRadial2Gradient(GrTexture* texture, GrScalar center, GrScalar radius, bool posRoot);
-    GrRadial2Gradient(GrContext* ctx, const SkShader& shader);
+    GrRadial2Gradient(GrContext* ctx, const SkShader& shader,
+                      GrSamplerState* sampler, SkScalar center, 
+                      SkScalar radius, SkScalar diffRadius);
     virtual ~GrRadial2Gradient();
 
     static const char* Name() { return "Two-Point Radial Gradient"; }
@@ -143,7 +150,9 @@ class GrConical2Gradient : public GrGradientEffect {
 public:
 
     GrConical2Gradient(GrTexture* texture, GrScalar center, GrScalar radius, GrScalar diffRadius);
-    GrConical2Gradient(GrContext* ctx, const SkShader& shader);
+    GrConical2Gradient(GrContext* ctx, const SkShader& shader,
+                       GrSamplerState* sampler, SkScalar center, 
+                       SkScalar radius, SkScalar diffRadius);
     virtual ~GrConical2Gradient();
 
     static const char* Name() { return "Two-Point Conical Gradient"; }
@@ -180,7 +189,8 @@ class GrSweepGradient : public GrGradientEffect {
 public:
 
     GrSweepGradient(GrTexture* texture);
-    GrSweepGradient(GrContext* ctx, const SkShader& shader);
+    GrSweepGradient(GrContext* ctx, const SkShader& shader,
+                     GrSamplerState* sampler);
     virtual ~GrSweepGradient();
 
     static const char* Name() { return "Sweep Gradient"; }

src/pdf/SkPDFShader.cpp

@@ -944,7 +944,7 @@ SkPDFShader::State::State(const SkShader& shader,
     if (fType == SkShader::kNone_GradientType) {
         SkShader::BitmapType bitmapType;
         SkMatrix matrix;
-        bitmapType = shader.asABitmap(&fImage, &matrix, fImageTileModes, NULL);
+        bitmapType = shader.asABitmap(&fImage, &matrix, fImageTileModes);
         if (bitmapType != SkShader::kDefault_BitmapType) {
             fImage.reset();
             return;