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| 1 /* | 1 /* |
| 2 * Copyright 2013 Google Inc. | 2 * Copyright 2013 Google Inc. |
| 3 * | 3 * |
| 4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
| 5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
| 6 */ | 6 */ |
| 7 | 7 |
| 8 #include "SkGpuBlurUtils.h" | 8 #include "SkGpuBlurUtils.h" |
| 9 | 9 |
| 10 #include "SkRect.h" | 10 #include "SkRect.h" |
| 11 | 11 |
| 12 #if SK_SUPPORT_GPU | 12 #if SK_SUPPORT_GPU |
| 13 #include "effects/GrConvolutionEffect.h" | 13 #include "effects/GrConvolutionEffect.h" |
| 14 #include "effects/GrMatrixConvolutionEffect.h" | 14 #include "effects/GrMatrixConvolutionEffect.h" |
| 15 #include "GrContext.h" | 15 #include "GrContext.h" |
| 16 #include "GrCaps.h" | |
| 17 #include "GrDrawContext.h" | 16 #include "GrDrawContext.h" |
| 18 #endif | 17 #endif |
| 19 | 18 |
| 20 namespace SkGpuBlurUtils { | 19 namespace SkGpuBlurUtils { |
| 21 | 20 |
| 22 #if SK_SUPPORT_GPU | 21 #if SK_SUPPORT_GPU |
| 23 | 22 |
| 24 #define MAX_BLUR_SIGMA 4.0f | 23 #define MAX_BLUR_SIGMA 4.0f |
| 25 | 24 |
| 26 static void scale_rect(SkRect* rect, float xScale, float yScale) { | 25 static void scale_rect(SkRect* rect, float xScale, float yScale) { |
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| 148 bool canClobberSrc, | 147 bool canClobberSrc, |
| 149 const SkRect& rect, | 148 const SkRect& rect, |
| 150 bool cropToRect, | 149 bool cropToRect, |
| 151 float sigmaX, | 150 float sigmaX, |
| 152 float sigmaY) { | 151 float sigmaY) { |
| 153 SkASSERT(context); | 152 SkASSERT(context); |
| 154 | 153 |
| 155 SkIRect clearRect; | 154 SkIRect clearRect; |
| 156 int scaleFactorX, radiusX; | 155 int scaleFactorX, radiusX; |
| 157 int scaleFactorY, radiusY; | 156 int scaleFactorY, radiusY; |
| 158 int maxTextureSize = context->caps()->maxTextureSize(); | 157 int maxTextureSize = context->getMaxTextureSize(); |
| 159 sigmaX = adjust_sigma(sigmaX, maxTextureSize, &scaleFactorX, &radiusX); | 158 sigmaX = adjust_sigma(sigmaX, maxTextureSize, &scaleFactorX, &radiusX); |
| 160 sigmaY = adjust_sigma(sigmaY, maxTextureSize, &scaleFactorY, &radiusY); | 159 sigmaY = adjust_sigma(sigmaY, maxTextureSize, &scaleFactorY, &radiusY); |
| 161 | 160 |
| 162 SkRect srcRect(rect); | 161 SkRect srcRect(rect); |
| 163 scale_rect(&srcRect, 1.0f / scaleFactorX, 1.0f / scaleFactorY); | 162 scale_rect(&srcRect, 1.0f / scaleFactorX, 1.0f / scaleFactorY); |
| 164 srcRect.roundOut(&srcRect); | 163 srcRect.roundOut(&srcRect); |
| 165 scale_rect(&srcRect, static_cast<float>(scaleFactorX), | 164 scale_rect(&srcRect, static_cast<float>(scaleFactorX), |
| 166 static_cast<float>(scaleFactorY)); | 165 static_cast<float>(scaleFactorY)); |
| 167 | 166 |
| 168 // setup new clip | 167 // setup new clip |
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| 308 SkMatrix::I(), dstRect, srcRect); | 307 SkMatrix::I(), dstRect, srcRect); |
| 309 srcRect = dstRect; | 308 srcRect = dstRect; |
| 310 srcTexture = dstTexture; | 309 srcTexture = dstTexture; |
| 311 SkTSwap(dstTexture, tempTexture); | 310 SkTSwap(dstTexture, tempTexture); |
| 312 } | 311 } |
| 313 return SkRef(srcTexture); | 312 return SkRef(srcTexture); |
| 314 } | 313 } |
| 315 #endif | 314 #endif |
| 316 | 315 |
| 317 } | 316 } |
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