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1 /* | 1 /* |
2 * Copyright 2012 Google Inc. | 2 * Copyright 2012 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 "GrConvolutionEffect.h" | 8 #include "GrConvolutionEffect.h" |
9 #include "gl/GrGLFragmentProcessor.h" | 9 #include "gl/GrGLFragmentProcessor.h" |
10 #include "gl/GrGLTexture.h" | 10 #include "gl/GrGLTexture.h" |
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145 b->add32(key); | 145 b->add32(key); |
146 } | 146 } |
147 | 147 |
148 /////////////////////////////////////////////////////////////////////////////// | 148 /////////////////////////////////////////////////////////////////////////////// |
149 | 149 |
150 GrConvolutionEffect::GrConvolutionEffect(GrTexture* texture, | 150 GrConvolutionEffect::GrConvolutionEffect(GrTexture* texture, |
151 Direction direction, | 151 Direction direction, |
152 int radius, | 152 int radius, |
153 const float* kernel, | 153 const float* kernel, |
154 bool useBounds, | 154 bool useBounds, |
155 float bounds[2]) | 155 float bounds[2], GrRenderTarget* dst) |
156 : INHERITED(texture, direction, radius), fUseBounds(useBounds) { | 156 : INHERITED(texture, direction, radius, dst), fUseBounds(useBounds) { |
157 this->initClassID<GrConvolutionEffect>(); | 157 this->initClassID<GrConvolutionEffect>(); |
158 SkASSERT(radius <= kMaxKernelRadius); | 158 SkASSERT(radius <= kMaxKernelRadius); |
159 SkASSERT(kernel); | 159 SkASSERT(kernel); |
160 int width = this->width(); | 160 int width = this->width(); |
161 for (int i = 0; i < width; i++) { | 161 for (int i = 0; i < width; i++) { |
162 fKernel[i] = kernel[i]; | 162 fKernel[i] = kernel[i]; |
163 } | 163 } |
164 memcpy(fBounds, bounds, sizeof(fBounds)); | 164 memcpy(fBounds, bounds, sizeof(fBounds)); |
165 } | 165 } |
166 | 166 |
167 GrConvolutionEffect::GrConvolutionEffect(GrTexture* texture, | 167 GrConvolutionEffect::GrConvolutionEffect(GrTexture* texture, |
168 Direction direction, | 168 Direction direction, |
169 int radius, | 169 int radius, |
170 float gaussianSigma, | 170 float gaussianSigma, |
171 bool useBounds, | 171 bool useBounds, |
172 float bounds[2]) | 172 float bounds[2], GrRenderTarget* dst) |
173 : INHERITED(texture, direction, radius), fUseBounds(useBounds) { | 173 : INHERITED(texture, direction, radius, dst), fUseBounds(useBounds) { |
174 this->initClassID<GrConvolutionEffect>(); | 174 this->initClassID<GrConvolutionEffect>(); |
175 SkASSERT(radius <= kMaxKernelRadius); | 175 SkASSERT(radius <= kMaxKernelRadius); |
176 int width = this->width(); | 176 int width = this->width(); |
177 | 177 |
178 float sum = 0.0f; | 178 float sum = 0.0f; |
179 float denom = 1.0f / (2.0f * gaussianSigma * gaussianSigma); | 179 float denom = 1.0f / (2.0f * gaussianSigma * gaussianSigma); |
180 for (int i = 0; i < width; ++i) { | 180 for (int i = 0; i < width; ++i) { |
181 float x = static_cast<float>(i - this->radius()); | 181 float x = static_cast<float>(i - this->radius()); |
182 // Note that the constant term (1/(sqrt(2*pi*sigma^2)) of the Gaussian | 182 // Note that the constant term (1/(sqrt(2*pi*sigma^2)) of the Gaussian |
183 // is dropped here, since we renormalize the kernel below. | 183 // is dropped here, since we renormalize the kernel below. |
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230 for (size_t i = 0; i < SK_ARRAY_COUNT(bounds); ++i) { | 230 for (size_t i = 0; i < SK_ARRAY_COUNT(bounds); ++i) { |
231 bounds[i] = d->fRandom->nextF(); | 231 bounds[i] = d->fRandom->nextF(); |
232 } | 232 } |
233 | 233 |
234 bool useBounds = d->fRandom->nextBool(); | 234 bool useBounds = d->fRandom->nextBool(); |
235 return GrConvolutionEffect::Create(d->fTextures[texIdx], | 235 return GrConvolutionEffect::Create(d->fTextures[texIdx], |
236 dir, | 236 dir, |
237 radius, | 237 radius, |
238 kernel, | 238 kernel, |
239 useBounds, | 239 useBounds, |
240 bounds); | 240 bounds, NULL); |
241 } | 241 } |
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