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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" |
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219 SkASSERT(kBGRA_8888_GrPixelConfig == srcTexture->config() || | 219 SkASSERT(kBGRA_8888_GrPixelConfig == srcTexture->config() || |
220 kRGBA_8888_GrPixelConfig == srcTexture->config() || | 220 kRGBA_8888_GrPixelConfig == srcTexture->config() || |
221 kSRGBA_8888_GrPixelConfig == srcTexture->config() || | 221 kSRGBA_8888_GrPixelConfig == srcTexture->config() || |
222 kSBGRA_8888_GrPixelConfig == srcTexture->config() || | 222 kSBGRA_8888_GrPixelConfig == srcTexture->config() || |
223 kAlpha_8_GrPixelConfig == srcTexture->config()); | 223 kAlpha_8_GrPixelConfig == srcTexture->config()); |
224 | 224 |
225 const int width = dstBounds.width(); | 225 const int width = dstBounds.width(); |
226 const int height = dstBounds.height(); | 226 const int height = dstBounds.height(); |
227 const GrPixelConfig config = srcTexture->config(); | 227 const GrPixelConfig config = srcTexture->config(); |
228 | 228 |
229 sk_sp<GrDrawContext> dstDrawContext(context->newDrawContext(SkBackingFit::kA
pprox, | 229 sk_sp<GrDrawContext> dstDrawContext(context->makeDrawContext(SkBackingFit::k
Approx, |
230 width, height, c
onfig, colorSpace, | 230 width, height,
config, colorSpace, |
231 0, kDefault_GrSu
rfaceOrigin)); | 231 0, kDefault_GrS
urfaceOrigin)); |
232 if (!dstDrawContext) { | 232 if (!dstDrawContext) { |
233 return nullptr; | 233 return nullptr; |
234 } | 234 } |
235 | 235 |
236 // For really small blurs (certainly no wider than 5x5 on desktop gpus) it i
s faster to just | 236 // For really small blurs (certainly no wider than 5x5 on desktop gpus) it i
s faster to just |
237 // launch a single non separable kernel vs two launches | 237 // launch a single non separable kernel vs two launches |
238 if (sigmaX > 0.0f && sigmaY > 0.0f && | 238 if (sigmaX > 0.0f && sigmaY > 0.0f && |
239 (2 * radiusX + 1) * (2 * radiusY + 1) <= MAX_KERNEL_SIZE) { | 239 (2 * radiusX + 1) * (2 * radiusY + 1) <= MAX_KERNEL_SIZE) { |
240 // We shouldn't be scaling because this is a small size blur | 240 // We shouldn't be scaling because this is a small size blur |
241 SkASSERT((1 == scaleFactorX) && (1 == scaleFactorY)); | 241 SkASSERT((1 == scaleFactorX) && (1 == scaleFactorY)); |
242 | 242 |
243 convolve_gaussian_2d(dstDrawContext.get(), clip, localDstBounds, srcOffs
et, | 243 convolve_gaussian_2d(dstDrawContext.get(), clip, localDstBounds, srcOffs
et, |
244 srcTexture.get(), radiusX, radiusY, sigmaX, sigmaY,
srcBounds); | 244 srcTexture.get(), radiusX, radiusY, sigmaX, sigmaY,
srcBounds); |
245 | 245 |
246 return dstDrawContext; | 246 return dstDrawContext; |
247 } | 247 } |
248 | 248 |
249 sk_sp<GrDrawContext> tmpDrawContext(context->newDrawContext(SkBackingFit::kA
pprox, | 249 sk_sp<GrDrawContext> tmpDrawContext(context->makeDrawContext(SkBackingFit::k
Approx, |
250 width, height, c
onfig, colorSpace, | 250 width, height,
config, colorSpace, |
251 0, kDefault_GrSu
rfaceOrigin)); | 251 0, kDefault_GrS
urfaceOrigin)); |
252 if (!tmpDrawContext) { | 252 if (!tmpDrawContext) { |
253 return nullptr; | 253 return nullptr; |
254 } | 254 } |
255 | 255 |
256 sk_sp<GrDrawContext> srcDrawContext; | 256 sk_sp<GrDrawContext> srcDrawContext; |
257 | 257 |
258 SkASSERT(SkIsPow2(scaleFactorX) && SkIsPow2(scaleFactorY)); | 258 SkASSERT(SkIsPow2(scaleFactorX) && SkIsPow2(scaleFactorY)); |
259 | 259 |
260 for (int i = 1; i < scaleFactorX || i < scaleFactorY; i *= 2) { | 260 for (int i = 1; i < scaleFactorX || i < scaleFactorY; i *= 2) { |
261 GrPaint paint; | 261 GrPaint paint; |
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371 dstDrawContext.swap(tmpDrawContext); | 371 dstDrawContext.swap(tmpDrawContext); |
372 } | 372 } |
373 | 373 |
374 return srcDrawContext; | 374 return srcDrawContext; |
375 } | 375 } |
376 | 376 |
377 } | 377 } |
378 | 378 |
379 #endif | 379 #endif |
380 | 380 |
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