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1 /* | 1 /* |
2 * Copyright 2013 The Android Open Source Project | 2 * Copyright 2013 The Android Open Source Project |
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 "SkBicubicImageFilter.h" | 8 #include "SkBicubicImageFilter.h" |
9 #include "SkBitmap.h" | 9 #include "SkBitmap.h" |
10 #include "SkColorPriv.h" | 10 #include "SkColorPriv.h" |
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219 } | 219 } |
220 | 220 |
221 void GrGLBicubicEffect::emitCode(GrGLShaderBuilder* builder, | 221 void GrGLBicubicEffect::emitCode(GrGLShaderBuilder* builder, |
222 const GrDrawEffect&, | 222 const GrDrawEffect&, |
223 EffectKey key, | 223 EffectKey key, |
224 const char* outputColor, | 224 const char* outputColor, |
225 const char* inputColor, | 225 const char* inputColor, |
226 const TextureSamplerArray& samplers) { | 226 const TextureSamplerArray& samplers) { |
227 SkString coords; | 227 SkString coords; |
228 fEffectMatrix.emitCodeMakeFSCoords2D(builder, key, &coords); | 228 fEffectMatrix.emitCodeMakeFSCoords2D(builder, key, &coords); |
229 fCoefficientsUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderTy
pe, | 229 fCoefficientsUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibili
ty, |
230 kMat44f_GrSLType, "Coefficients"); | 230 kMat44f_GrSLType, "Coefficients"); |
231 fImageIncrementUni = builder->addUniform(GrGLShaderBuilder::kFragment_Shader
Type, | 231 fImageIncrementUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibi
lity, |
232 kVec2f_GrSLType, "ImageIncrement"); | 232 kVec2f_GrSLType, "ImageIncrement"); |
233 | 233 |
234 const char* imgInc = builder->getUniformCStr(fImageIncrementUni); | 234 const char* imgInc = builder->getUniformCStr(fImageIncrementUni); |
235 const char* coeff = builder->getUniformCStr(fCoefficientsUni); | 235 const char* coeff = builder->getUniformCStr(fCoefficientsUni); |
236 | 236 |
237 SkString cubicBlendName; | 237 SkString cubicBlendName; |
238 | 238 |
239 static const GrGLShaderVar gCubicBlendArgs[] = { | 239 static const GrGLShaderVar gCubicBlendArgs[] = { |
240 GrGLShaderVar("coefficients", kMat44f_GrSLType), | 240 GrGLShaderVar("coefficients", kMat44f_GrSLType), |
241 GrGLShaderVar("t", kFloat_GrSLType), | 241 GrGLShaderVar("t", kFloat_GrSLType), |
242 GrGLShaderVar("c0", kVec4f_GrSLType), | 242 GrGLShaderVar("c0", kVec4f_GrSLType), |
243 GrGLShaderVar("c1", kVec4f_GrSLType), | 243 GrGLShaderVar("c1", kVec4f_GrSLType), |
244 GrGLShaderVar("c2", kVec4f_GrSLType), | 244 GrGLShaderVar("c2", kVec4f_GrSLType), |
245 GrGLShaderVar("c3", kVec4f_GrSLType), | 245 GrGLShaderVar("c3", kVec4f_GrSLType), |
246 }; | 246 }; |
247 builder->emitFunction(GrGLShaderBuilder::kFragment_ShaderType, | 247 builder->fsEmitFunction(kVec4f_GrSLType, |
248 kVec4f_GrSLType, | 248 "cubicBlend", |
249 "cubicBlend", | 249 SK_ARRAY_COUNT(gCubicBlendArgs), |
250 SK_ARRAY_COUNT(gCubicBlendArgs), | 250 gCubicBlendArgs, |
251 gCubicBlendArgs, | 251 "\tvec4 ts = vec4(1.0, t, t * t, t * t * t);\n" |
252 "\tvec4 ts = vec4(1.0, t, t * t, t * t * t);\n" | 252 "\tvec4 c = coefficients * ts;\n" |
253 "\tvec4 c = coefficients * ts;\n" | 253 "\treturn c.x * c0 + c.y * c1 + c.z * c2 + c.w * c3;
\n", |
254 "\treturn c.x * c0 + c.y * c1 + c.z * c2 + c.w * c3;\n
", | 254 &cubicBlendName); |
255 &cubicBlendName); | |
256 builder->fsCodeAppendf("\tvec2 coord = %s - %s * vec2(0.5, 0.5);\n", coords.
c_str(), imgInc); | 255 builder->fsCodeAppendf("\tvec2 coord = %s - %s * vec2(0.5, 0.5);\n", coords.
c_str(), imgInc); |
257 builder->fsCodeAppendf("\tvec2 f = fract(coord / %s);\n", imgInc); | 256 builder->fsCodeAppendf("\tvec2 f = fract(coord / %s);\n", imgInc); |
258 for (int y = 0; y < 4; ++y) { | 257 for (int y = 0; y < 4; ++y) { |
259 for (int x = 0; x < 4; ++x) { | 258 for (int x = 0; x < 4; ++x) { |
260 SkString coord; | 259 SkString coord; |
261 coord.printf("coord + %s * vec2(%d, %d)", imgInc, x - 1, y - 1); | 260 coord.printf("coord + %s * vec2(%d, %d)", imgInc, x - 1, y - 1); |
262 builder->fsCodeAppendf("\tvec4 s%d%d = ", x, y); | 261 builder->fsCodeAppendf("\tvec4 s%d%d = ", x, y); |
263 builder->appendTextureLookup(GrGLShaderBuilder::kFragment_ShaderType
, | 262 builder->fsAppendTextureLookup(samplers[0], coord.c_str()); |
264 samplers[0], | |
265 coord.c_str()); | |
266 builder->fsCodeAppend(";\n"); | 263 builder->fsCodeAppend(";\n"); |
267 } | 264 } |
268 builder->fsCodeAppendf("\tvec4 s%d = %s(%s, f.x, s0%d, s1%d, s2%d, s3%d)
;\n", y, cubicBlendName.c_str(), coeff, y, y, y, y); | 265 builder->fsCodeAppendf("\tvec4 s%d = %s(%s, f.x, s0%d, s1%d, s2%d, s3%d)
;\n", y, cubicBlendName.c_str(), coeff, y, y, y, y); |
269 } | 266 } |
270 builder->fsCodeAppendf("\t%s = %s(%s, f.y, s0, s1, s2, s3);\n", outputColor,
cubicBlendName.c_str(), coeff); | 267 builder->fsCodeAppendf("\t%s = %s(%s, f.y, s0, s1, s2, s3);\n", outputColor,
cubicBlendName.c_str(), coeff); |
271 } | 268 } |
272 | 269 |
273 GrGLEffect::EffectKey GrGLBicubicEffect::GenKey(const GrDrawEffect& drawEffect,
const GrGLCaps&) { | 270 GrGLEffect::EffectKey GrGLBicubicEffect::GenKey(const GrDrawEffect& drawEffect,
const GrGLCaps&) { |
274 const GrBicubicEffect& bicubic = drawEffect.castEffect<GrBicubicEffect>(); | 271 const GrBicubicEffect& bicubic = drawEffect.castEffect<GrBicubicEffect>(); |
275 EffectKey matrixKey = GrGLEffectMatrix::GenKey(bicubic.getMatrix(), | 272 EffectKey matrixKey = GrGLEffectMatrix::GenKey(bicubic.getMatrix(), |
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366 GrPaint paint; | 363 GrPaint paint; |
367 paint.addColorEffect(GrBicubicEffect::Create(srcTexture, fCoefficients))->un
ref(); | 364 paint.addColorEffect(GrBicubicEffect::Create(srcTexture, fCoefficients))->un
ref(); |
368 SkRect srcRect; | 365 SkRect srcRect; |
369 srcBM.getBounds(&srcRect); | 366 srcBM.getBounds(&srcRect); |
370 context->drawRectToRect(paint, dstRect, srcRect); | 367 context->drawRectToRect(paint, dstRect, srcRect); |
371 return SkImageFilterUtils::WrapTexture(dst, desc.fWidth, desc.fHeight, resul
t); | 368 return SkImageFilterUtils::WrapTexture(dst, desc.fWidth, desc.fHeight, resul
t); |
372 } | 369 } |
373 #endif | 370 #endif |
374 | 371 |
375 /////////////////////////////////////////////////////////////////////////////// | 372 /////////////////////////////////////////////////////////////////////////////// |
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