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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 "GrConfigConversionEffect.h" | 8 #include "GrConfigConversionEffect.h" |
9 #include "GrContext.h" | 9 #include "GrContext.h" |
10 #include "GrTBackendEffectFactory.h" | 10 #include "GrTBackendEffectFactory.h" |
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22 fPMConversion = effect.pmConversion(); | 22 fPMConversion = effect.pmConversion(); |
23 } | 23 } |
24 | 24 |
25 virtual void emitCode(GrGLShaderBuilder* builder, | 25 virtual void emitCode(GrGLShaderBuilder* builder, |
26 const GrDrawEffect&, | 26 const GrDrawEffect&, |
27 EffectKey key, | 27 EffectKey key, |
28 const char* outputColor, | 28 const char* outputColor, |
29 const char* inputColor, | 29 const char* inputColor, |
30 const TransformedCoordsArray& coords, | 30 const TransformedCoordsArray& coords, |
31 const TextureSamplerArray& samplers) SK_OVERRIDE { | 31 const TextureSamplerArray& samplers) SK_OVERRIDE { |
32 const char* outputColorH = "outputColorH"; | |
33 builder->fsCodeAppendf("\thighp vec4 %s;\n", outputColorH); | |
bsalomon
2014/07/08 13:10:15
It looks like we're still always declaring this va
changjun.yang
2014/07/09 03:02:09
Done. And looks we still need the outputColorH tho
| |
32 builder->fsCodeAppendf("\t\t%s = ", outputColor); | 34 builder->fsCodeAppendf("\t\t%s = ", outputColor); |
33 builder->fsAppendTextureLookup(samplers[0], coords[0].c_str(), coords[0] .type()); | 35 builder->fsAppendTextureLookup(samplers[0], coords[0].c_str(), coords[0] .type()); |
34 builder->fsCodeAppend(";\n"); | 36 builder->fsCodeAppend(";\n"); |
35 if (GrConfigConversionEffect::kNone_PMConversion == fPMConversion) { | 37 if (GrConfigConversionEffect::kNone_PMConversion == fPMConversion) { |
36 SkASSERT(fSwapRedAndBlue); | 38 SkASSERT(fSwapRedAndBlue); |
37 builder->fsCodeAppendf("\t%s = %s.bgra;\n", outputColor, outputColor ); | 39 builder->fsCodeAppendf("\t%s = %s.bgra;\n", outputColor, outputColor ); |
38 } else { | 40 } else { |
39 const char* swiz = fSwapRedAndBlue ? "bgr" : "rgb"; | 41 const char* swiz = fSwapRedAndBlue ? "bgr" : "rgb"; |
40 switch (fPMConversion) { | 42 switch (fPMConversion) { |
41 case GrConfigConversionEffect::kMulByAlpha_RoundUp_PMConversion: | 43 case GrConfigConversionEffect::kMulByAlpha_RoundUp_PMConversion: |
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53 outputColor, outputColor, swiz, outputColor, outputColor ); | 55 outputColor, outputColor, swiz, outputColor, outputColor ); |
54 break; | 56 break; |
55 case GrConfigConversionEffect::kDivByAlpha_RoundUp_PMConversion: | 57 case GrConfigConversionEffect::kDivByAlpha_RoundUp_PMConversion: |
56 builder->fsCodeAppendf("\t\t%s = %s.a <= 0.0 ? vec4(0,0,0,0) : vec4(ceil(%s.%s / %s.a * 255.0) / 255.0, %s.a);\n", | 58 builder->fsCodeAppendf("\t\t%s = %s.a <= 0.0 ? vec4(0,0,0,0) : vec4(ceil(%s.%s / %s.a * 255.0) / 255.0, %s.a);\n", |
57 outputColor, outputColor, outputColor, swiz, outputColor , outputColor); | 59 outputColor, outputColor, outputColor, swiz, outputColor , outputColor); |
58 break; | 60 break; |
59 case GrConfigConversionEffect::kDivByAlpha_RoundDown_PMConversio n: | 61 case GrConfigConversionEffect::kDivByAlpha_RoundDown_PMConversio n: |
60 builder->fsCodeAppendf("\t\t%s = %s.a <= 0.0 ? vec4(0,0,0,0) : vec4(floor(%s.%s / %s.a * 255.0) / 255.0, %s.a);\n", | 62 builder->fsCodeAppendf("\t\t%s = %s.a <= 0.0 ? vec4(0,0,0,0) : vec4(floor(%s.%s / %s.a * 255.0) / 255.0, %s.a);\n", |
61 outputColor, outputColor, outputColor, swiz, outputColor , outputColor); | 63 outputColor, outputColor, outputColor, swiz, outputColor , outputColor); |
62 break; | 64 break; |
65 case GrConfigConversionEffect::kMulByAlpha_RoundUp_HIGHP_PMConve rsion: | |
66 builder->fsCodeAppendf("\t\t%s = %s;\n", outputColorH, outpu tColor); | |
67 builder->fsCodeAppendf( | |
68 "\t\t%s = vec4(ceil(%s.%s * %s.a * 255.0) / 255.0, %s.a) ;\n", | |
69 outputColorH, outputColorH, swiz, outputColorH, outputCo lorH); | |
70 builder->fsCodeAppendf("\t\t%s = %s;\n", outputColor, output ColorH); | |
71 break; | |
72 case GrConfigConversionEffect::kMulByAlpha_RoundDown_HIGHP_PMCon version: | |
73 builder->fsCodeAppendf("\t\t%s = %s;\n", outputColorH, outpu tColor); | |
74 builder->fsCodeAppendf( | |
75 "\t\t%s = vec4(floor(%s.%s * %s.a * 255.0) / 255.0, %s.a );\n", | |
76 outputColorH, outputColorH, swiz, outputColorH, outputCo lorH); | |
77 builder->fsCodeAppendf("\t\t%s = %s;\n", outputColor, output ColorH); | |
78 break; | |
79 case GrConfigConversionEffect::kDivByAlpha_RoundUp_HIGHP_PMConve rsion: | |
80 builder->fsCodeAppendf("\t\t%s = %s;\n", outputColorH, outpu tColor); | |
81 builder->fsCodeAppendf("\t\t%s = %s.a <= 0.0 ? vec4(0,0,0,0) : vec4(ceil(%s.%s / %s.a * 255.0) / 255.0, %s.a);\n", | |
82 outputColorH, outputColorH, outputColorH, swiz, outputCo lorH, outputColorH); | |
83 builder->fsCodeAppendf("\t\t%s = %s;\n", outputColor, output ColorH); | |
84 break; | |
85 case GrConfigConversionEffect::kDivByAlpha_RoundDown_HIGHP_PMCon version: | |
86 builder->fsCodeAppendf("\t\t%s = %s;\n", outputColorH, outpu tColor); | |
87 builder->fsCodeAppendf("\t\t%s = %s.a <= 0.0 ? vec4(0,0,0,0) : vec4(floor(%s.%s / %s.a * 255.0) / 255.0, %s.a);\n", | |
88 outputColorH, outputColorH, outputColorH, swiz, outputCo lorH, outputColorH); | |
89 builder->fsCodeAppendf("\t\t%s = %s;\n", outputColor, output ColorH); | |
90 break; | |
63 default: | 91 default: |
64 SkFAIL("Unknown conversion op."); | 92 SkFAIL("Unknown conversion op."); |
65 break; | 93 break; |
66 } | 94 } |
67 } | 95 } |
68 SkString modulate; | 96 SkString modulate; |
69 GrGLSLMulVarBy4f(&modulate, 2, outputColor, inputColor); | 97 GrGLSLMulVarBy4f(&modulate, 2, outputColor, inputColor); |
70 builder->fsCodeAppend(modulate.c_str()); | 98 builder->fsCodeAppend(modulate.c_str()); |
71 } | 99 } |
72 | 100 |
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177 } | 205 } |
178 desc.fFlags = kNone_GrTextureFlags; | 206 desc.fFlags = kNone_GrTextureFlags; |
179 SkAutoTUnref<GrTexture> dataTex(context->createUncachedTexture(desc, data, 0 )); | 207 SkAutoTUnref<GrTexture> dataTex(context->createUncachedTexture(desc, data, 0 )); |
180 if (!dataTex.get()) { | 208 if (!dataTex.get()) { |
181 return; | 209 return; |
182 } | 210 } |
183 | 211 |
184 static const PMConversion kConversionRules[][2] = { | 212 static const PMConversion kConversionRules[][2] = { |
185 {kDivByAlpha_RoundDown_PMConversion, kMulByAlpha_RoundUp_PMConversion}, | 213 {kDivByAlpha_RoundDown_PMConversion, kMulByAlpha_RoundUp_PMConversion}, |
186 {kDivByAlpha_RoundUp_PMConversion, kMulByAlpha_RoundDown_PMConversion}, | 214 {kDivByAlpha_RoundUp_PMConversion, kMulByAlpha_RoundDown_PMConversion}, |
215 {kDivByAlpha_RoundDown_HIGHP_PMConversion, kMulByAlpha_RoundUp_HIGHP_PMC onversion}, | |
216 {kDivByAlpha_RoundUp_HIGHP_PMConversion, kMulByAlpha_RoundDown_HIGHP_PMC onversion}, | |
187 }; | 217 }; |
188 | 218 |
189 GrContext::AutoWideOpenIdentityDraw awoid(context, NULL); | 219 GrContext::AutoWideOpenIdentityDraw awoid(context, NULL); |
190 | 220 |
191 bool failed = true; | 221 bool failed = true; |
192 | 222 |
193 for (size_t i = 0; i < SK_ARRAY_COUNT(kConversionRules) && failed; ++i) { | 223 for (size_t i = 0; i < SK_ARRAY_COUNT(kConversionRules) && failed; ++i) { |
194 *pmToUPMRule = kConversionRules[i][0]; | 224 *pmToUPMRule = kConversionRules[i][0]; |
195 *upmToPMRule = kConversionRules[i][1]; | 225 *upmToPMRule = kConversionRules[i][1]; |
196 | 226 |
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268 // The PM conversions assume colors are 0..255 | 298 // The PM conversions assume colors are 0..255 |
269 return NULL; | 299 return NULL; |
270 } | 300 } |
271 AutoEffectUnref effect(SkNEW_ARGS(GrConfigConversionEffect, (texture, | 301 AutoEffectUnref effect(SkNEW_ARGS(GrConfigConversionEffect, (texture, |
272 swapRedAndB lue, | 302 swapRedAndB lue, |
273 pmConversio n, | 303 pmConversio n, |
274 matrix))); | 304 matrix))); |
275 return CreateEffectRef(effect); | 305 return CreateEffectRef(effect); |
276 } | 306 } |
277 } | 307 } |
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