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Side by Side Diff: src/effects/SkTableColorFilter.cpp

Issue 26190003: Potentially optimize some GrGLEffects for known input color values (Closed) Base URL: https://skia.googlecode.com/svn/trunk
Patch Set: Created 7 years, 2 months ago
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1 1
2 #include "SkBitmap.h" 2 #include "SkBitmap.h"
3 #include "SkTableColorFilter.h" 3 #include "SkTableColorFilter.h"
4 #include "SkColorPriv.h" 4 #include "SkColorPriv.h"
5 #include "SkFlattenableBuffers.h" 5 #include "SkFlattenableBuffers.h"
6 #include "SkUnPreMultiply.h" 6 #include "SkUnPreMultiply.h"
7 #include "SkString.h" 7 #include "SkString.h"
8 8
9 class SkTable_ColorFilter : public SkColorFilter { 9 class SkTable_ColorFilter : public SkColorFilter {
10 public: 10 public:
(...skipping 253 matching lines...) Expand 10 before | Expand all | Expand 10 after
264 }; 264 };
265 265
266 class GLColorTableEffect : public GrGLEffect { 266 class GLColorTableEffect : public GrGLEffect {
267 public: 267 public:
268 GLColorTableEffect(const GrBackendEffectFactory&, const GrDrawEffect&); 268 GLColorTableEffect(const GrBackendEffectFactory&, const GrDrawEffect&);
269 269
270 virtual void emitCode(GrGLShaderBuilder*, 270 virtual void emitCode(GrGLShaderBuilder*,
271 const GrDrawEffect&, 271 const GrDrawEffect&,
272 EffectKey, 272 EffectKey,
273 const char* outputColor, 273 const char* outputColor,
274 const char* inputColor, 274 const GrGLSLExpr4& inputColor,
275 const TransformedCoordsArray&, 275 const TransformedCoordsArray&,
276 const TextureSamplerArray&) SK_OVERRIDE; 276 const TextureSamplerArray&) SK_OVERRIDE;
277 277
278 virtual void setData(const GrGLUniformManager&, const GrDrawEffect&) SK_OVER RIDE {} 278 virtual void setData(const GrGLUniformManager&, const GrDrawEffect&) SK_OVER RIDE {}
279 279
280 static EffectKey GenKey(const GrDrawEffect&, const GrGLCaps&); 280 static EffectKey GenKey(const GrDrawEffect&, const GrGLCaps&);
281 281
282 private: 282 private:
283 283
284 typedef GrGLEffect INHERITED; 284 typedef GrGLEffect INHERITED;
285 }; 285 };
286 286
287 GLColorTableEffect::GLColorTableEffect(const GrBackendEffectFactory& factory, co nst GrDrawEffect&) 287 GLColorTableEffect::GLColorTableEffect(const GrBackendEffectFactory& factory, co nst GrDrawEffect&)
288 : INHERITED(factory) { 288 : INHERITED(factory) {
289 } 289 }
290 290
291 void GLColorTableEffect::emitCode(GrGLShaderBuilder* builder, 291 void GLColorTableEffect::emitCode(GrGLShaderBuilder* builder,
292 const GrDrawEffect&, 292 const GrDrawEffect&,
293 EffectKey, 293 EffectKey,
294 const char* outputColor, 294 const char* outputColor,
295 const char* inputColor, 295 const GrGLSLExpr4& inputColor,
296 const TransformedCoordsArray&, 296 const TransformedCoordsArray&,
297 const TextureSamplerArray& samplers) { 297 const TextureSamplerArray& samplers) {
298 298
299 static const float kColorScaleFactor = 255.0f / 256.0f; 299 static const float kColorScaleFactor = 255.0f / 256.0f;
300 static const float kColorOffsetFactor = 1.0f / 512.0f; 300 static const float kColorOffsetFactor = 1.0f / 512.0f;
301 if (NULL == inputColor) { 301 if (inputColor.isOnes()) {
302 // the input color is solid white (all ones). 302 // the input color is solid white (all ones).
303 static const float kMaxValue = kColorScaleFactor + kColorOffsetFactor; 303 static const float kMaxValue = kColorScaleFactor + kColorOffsetFactor;
304 builder->fsCodeAppendf("\t\tvec4 coord = vec4(%f, %f, %f, %f);\n", 304 builder->fsCodeAppendf("\t\tvec4 coord = vec4(%f, %f, %f, %f);\n",
305 kMaxValue, kMaxValue, kMaxValue, kMaxValue); 305 kMaxValue, kMaxValue, kMaxValue, kMaxValue);
306 306
307 } else { 307 } else {
308 builder->fsCodeAppendf("\t\tfloat nonZeroAlpha = max(%s.a, .0001);\n", i nputColor); 308 builder->fsCodeAppendf("\t\tfloat nonZeroAlpha = %s;\n", GrGLSL::max(inp utColor.a(), 0.0001f).c_str());
309 builder->fsCodeAppendf("\t\tvec4 coord = vec4(%s.rgb / nonZeroAlpha, non ZeroAlpha);\n", inputColor); 309 builder->fsCodeAppendf("\t\tvec4 coord = vec4(%s.rgb / nonZeroAlpha, non ZeroAlpha);\n", inputColor.c_str());
310 builder->fsCodeAppendf("\t\tcoord = coord * %f + vec4(%f, %f, %f, %f);\n ", 310 builder->fsCodeAppendf("\t\tcoord = coord * %f + vec4(%f, %f, %f, %f);\n ",
311 kColorScaleFactor, 311 kColorScaleFactor,
312 kColorOffsetFactor, kColorOffsetFactor, 312 kColorOffsetFactor, kColorOffsetFactor,
313 kColorOffsetFactor, kColorOffsetFactor); 313 kColorOffsetFactor, kColorOffsetFactor);
314 } 314 }
315 315
316 builder->fsCodeAppendf("\t\t%s.a = ", outputColor); 316 builder->fsCodeAppendf("\t\t%s.a = ", outputColor);
317 builder->fsAppendTextureLookup(samplers[0], "vec2(coord.a, 0.125)"); 317 builder->fsAppendTextureLookup(samplers[0], "vec2(coord.a, 0.125)");
318 builder->fsCodeAppend(";\n"); 318 builder->fsCodeAppend(";\n");
319 319
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424 SkColorFilter* SkTableColorFilter::CreateARGB(const uint8_t tableA[256], 424 SkColorFilter* SkTableColorFilter::CreateARGB(const uint8_t tableA[256],
425 const uint8_t tableR[256], 425 const uint8_t tableR[256],
426 const uint8_t tableG[256], 426 const uint8_t tableG[256],
427 const uint8_t tableB[256]) { 427 const uint8_t tableB[256]) {
428 return SkNEW_ARGS(SkTable_ColorFilter, (tableA, tableR, tableG, tableB)); 428 return SkNEW_ARGS(SkTable_ColorFilter, (tableA, tableR, tableG, tableB));
429 } 429 }
430 430
431 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkTableColorFilter) 431 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkTableColorFilter)
432 SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkTable_ColorFilter) 432 SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkTable_ColorFilter)
433 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END 433 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END
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