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| 1 | 1 |
| 2 /* | 2 /* |
| 3 * Copyright 2012 Google Inc. | 3 * Copyright 2012 Google Inc. |
| 4 * | 4 * |
| 5 * Use of this source code is governed by a BSD-style license that can be | 5 * Use of this source code is governed by a BSD-style license that can be |
| 6 * found in the LICENSE file. | 6 * found in the LICENSE file. |
| 7 */ | 7 */ |
| 8 | 8 |
| 9 #include "SkSweepGradient.h" | 9 #include "SkSweepGradient.h" |
| 10 | 10 |
| (...skipping 155 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 166 toggle = next_dither_toggle16(toggle); | 166 toggle = next_dither_toggle16(toggle); |
| 167 } | 167 } |
| 168 } | 168 } |
| 169 } | 169 } |
| 170 | 170 |
| 171 ///////////////////////////////////////////////////////////////////// | 171 ///////////////////////////////////////////////////////////////////// |
| 172 | 172 |
| 173 #if SK_SUPPORT_GPU | 173 #if SK_SUPPORT_GPU |
| 174 | 174 |
| 175 #include "GrTBackendEffectFactory.h" | 175 #include "GrTBackendEffectFactory.h" |
| 176 #include "gl/GrGLShaderBuilder.h" | 176 #include "gl/builders/GrGLProgramBuilder.h" |
| 177 #include "SkGr.h" | 177 #include "SkGr.h" |
| 178 | 178 |
| 179 class GrGLSweepGradient : public GrGLGradientEffect { | 179 class GrGLSweepGradient : public GrGLGradientEffect { |
| 180 public: | 180 public: |
| 181 | 181 |
| 182 GrGLSweepGradient(const GrBackendEffectFactory& factory, | 182 GrGLSweepGradient(const GrBackendEffectFactory& factory, |
| 183 const GrDrawEffect&) : INHERITED (factory) { } | 183 const GrDrawEffect&) : INHERITED (factory) { } |
| 184 virtual ~GrGLSweepGradient() { } | 184 virtual ~GrGLSweepGradient() { } |
| 185 | 185 |
| 186 virtual void emitCode(GrGLShaderBuilder*, | 186 virtual void emitCode(GrGLProgramBuilder*, |
| 187 const GrDrawEffect&, | 187 const GrDrawEffect&, |
| 188 const GrEffectKey&, | 188 const GrEffectKey&, |
| 189 const char* outputColor, | 189 const char* outputColor, |
| 190 const char* inputColor, | 190 const char* inputColor, |
| 191 const TransformedCoordsArray&, | 191 const TransformedCoordsArray&, |
| 192 const TextureSamplerArray&) SK_OVERRIDE; | 192 const TextureSamplerArray&) SK_OVERRIDE; |
| 193 | 193 |
| 194 static void GenKey(const GrDrawEffect& drawEffect, const GrGLCaps&, GrEffect
KeyBuilder* b) { | 194 static void GenKey(const GrDrawEffect& drawEffect, const GrGLCaps&, GrEffect
KeyBuilder* b) { |
| 195 b->add32(GenBaseGradientKey(drawEffect)); | 195 b->add32(GenBaseGradientKey(drawEffect)); |
| 196 } | 196 } |
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| 246 colors, stops, c
olorCount)); | 246 colors, stops, c
olorCount)); |
| 247 SkPaint paint; | 247 SkPaint paint; |
| 248 GrEffect* effect; | 248 GrEffect* effect; |
| 249 GrColor paintColor; | 249 GrColor paintColor; |
| 250 SkAssertResult(shader->asNewEffect(context, paint, NULL, &paintColor, &effec
t)); | 250 SkAssertResult(shader->asNewEffect(context, paint, NULL, &paintColor, &effec
t)); |
| 251 return effect; | 251 return effect; |
| 252 } | 252 } |
| 253 | 253 |
| 254 ///////////////////////////////////////////////////////////////////// | 254 ///////////////////////////////////////////////////////////////////// |
| 255 | 255 |
| 256 void GrGLSweepGradient::emitCode(GrGLShaderBuilder* builder, | 256 void GrGLSweepGradient::emitCode(GrGLProgramBuilder* builder, |
| 257 const GrDrawEffect&, | 257 const GrDrawEffect&, |
| 258 const GrEffectKey& key, | 258 const GrEffectKey& key, |
| 259 const char* outputColor, | 259 const char* outputColor, |
| 260 const char* inputColor, | 260 const char* inputColor, |
| 261 const TransformedCoordsArray& coords, | 261 const TransformedCoordsArray& coords, |
| 262 const TextureSamplerArray& samplers) { | 262 const TextureSamplerArray& samplers) { |
| 263 uint32_t baseKey = key.get32(0); | 263 uint32_t baseKey = key.get32(0); |
| 264 this->emitUniforms(builder, baseKey); | 264 this->emitUniforms(builder, baseKey); |
| 265 SkString coords2D = builder->ensureFSCoords2D(coords, 0); | 265 SkString coords2D = builder->getFragmentShaderBuilder()->ensureFSCoords2D(co
ords, 0); |
| 266 const GrGLContextInfo ctxInfo = builder->ctxInfo(); | 266 const GrGLContextInfo ctxInfo = builder->ctxInfo(); |
| 267 SkString t; | 267 SkString t; |
| 268 // 0.1591549430918 is 1/(2*pi), used since atan returns values [-pi, pi] | 268 // 0.1591549430918 is 1/(2*pi), used since atan returns values [-pi, pi] |
| 269 // On Intel GPU there is an issue where it reads the second arguement to ata
n "- %s.x" as an int | 269 // On Intel GPU there is an issue where it reads the second arguement to ata
n "- %s.x" as an int |
| 270 // thus must us -1.0 * %s.x to work correctly | 270 // thus must us -1.0 * %s.x to work correctly |
| 271 if (kIntel_GrGLVendor != ctxInfo.vendor()){ | 271 if (kIntel_GrGLVendor != ctxInfo.vendor()){ |
| 272 t.printf("atan(- %s.y, - %s.x) * 0.1591549430918 + 0.5", | 272 t.printf("atan(- %s.y, - %s.x) * 0.1591549430918 + 0.5", |
| 273 coords2D.c_str(), coords2D.c_str()); | 273 coords2D.c_str(), coords2D.c_str()); |
| 274 } else { | 274 } else { |
| 275 t.printf("atan(- %s.y, -1.0 * %s.x) * 0.1591549430918 + 0.5", | 275 t.printf("atan(- %s.y, -1.0 * %s.x) * 0.1591549430918 + 0.5", |
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| 322 str->appendScalar(fCenter.fX); | 322 str->appendScalar(fCenter.fX); |
| 323 str->append(", "); | 323 str->append(", "); |
| 324 str->appendScalar(fCenter.fY); | 324 str->appendScalar(fCenter.fY); |
| 325 str->append(") "); | 325 str->append(") "); |
| 326 | 326 |
| 327 this->INHERITED::toString(str); | 327 this->INHERITED::toString(str); |
| 328 | 328 |
| 329 str->append(")"); | 329 str->append(")"); |
| 330 } | 330 } |
| 331 #endif | 331 #endif |
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