jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2013 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
| 8 | #include "GrDistanceFieldTextureEffect.h" |
egdaniel | 605dd0f | 2014-11-12 08:35:25 -0800 | [diff] [blame] | 9 | #include "GrInvariantOutput.h" |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 10 | #include "GrTexture.h" |
| 11 | #include "SkDistanceFieldGen.h" |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 12 | #include "gl/GrGLProcessor.h" |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 13 | #include "gl/GrGLSL.h" |
| 14 | #include "gl/GrGLTexture.h" |
joshualitt | 249af15 | 2014-09-15 11:41:13 -0700 | [diff] [blame] | 15 | #include "gl/GrGLGeometryProcessor.h" |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 16 | #include "gl/builders/GrGLProgramBuilder.h" |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 17 | |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 18 | // Assuming a radius of the diagonal of the fragment, hence a factor of sqrt(2)/2 |
| 19 | #define SK_DistanceFieldAAFactor "0.7071" |
| 20 | |
joshualitt | 249af15 | 2014-09-15 11:41:13 -0700 | [diff] [blame] | 21 | class GrGLDistanceFieldTextureEffect : public GrGLGeometryProcessor { |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 22 | public: |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 23 | GrGLDistanceFieldTextureEffect(const GrGeometryProcessor&, |
joshualitt | 87f48d9 | 2014-12-04 10:41:40 -0800 | [diff] [blame] | 24 | const GrBatchTracker&) |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 25 | : fTextureSize(SkISize::Make(-1,-1)) |
jvanverth | 9564ce6 | 2014-09-16 05:45:19 -0700 | [diff] [blame] | 26 | #ifdef SK_GAMMA_APPLY_TO_A8 |
| 27 | , fLuminance(-1.0f) |
| 28 | #endif |
| 29 | {} |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 30 | |
joshualitt | c369e7c | 2014-10-22 10:56:26 -0700 | [diff] [blame] | 31 | virtual void emitCode(const EmitArgs& args) SK_OVERRIDE { |
joshualitt | 249af15 | 2014-09-15 11:41:13 -0700 | [diff] [blame] | 32 | const GrDistanceFieldTextureEffect& dfTexEffect = |
joshualitt | c369e7c | 2014-10-22 10:56:26 -0700 | [diff] [blame] | 33 | args.fGP.cast<GrDistanceFieldTextureEffect>(); |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 34 | |
joshualitt | c369e7c | 2014-10-22 10:56:26 -0700 | [diff] [blame] | 35 | GrGLGPFragmentBuilder* fsBuilder = args.fPB->getFragmentShaderBuilder(); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 36 | SkAssertResult(fsBuilder->enableFeature( |
| 37 | GrGLFragmentShaderBuilder::kStandardDerivatives_GLSLFeature)); |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 38 | |
joshualitt | 2dd1ae0 | 2014-12-03 06:24:10 -0800 | [diff] [blame] | 39 | GrGLVertexBuilder* vsBuilder = args.fPB->getVertexShaderBuilder(); |
joshualitt | 74077b9 | 2014-10-24 11:26:03 -0700 | [diff] [blame] | 40 | GrGLVertToFrag v(kVec2f_GrSLType); |
| 41 | args.fPB->addVarying("TextureCoords", &v); |
joshualitt | 2dd1ae0 | 2014-12-03 06:24:10 -0800 | [diff] [blame] | 42 | vsBuilder->codeAppendf("%s = %s;", v.vsOut(), dfTexEffect.inTextureCoords()->fName); |
commit-bot@chromium.org | 6c89c34 | 2014-02-14 21:48:29 +0000 | [diff] [blame] | 43 | |
joshualitt | 2dd1ae0 | 2014-12-03 06:24:10 -0800 | [diff] [blame] | 44 | // setup color attribute |
| 45 | if(dfTexEffect.inColor()) { |
| 46 | args.fPB->addPassThroughAttribute(dfTexEffect.inColor(), args.fOutputColor); |
| 47 | } |
commit-bot@chromium.org | 6c89c34 | 2014-02-14 21:48:29 +0000 | [diff] [blame] | 48 | |
joshualitt | 4973d9d | 2014-11-08 09:24:25 -0800 | [diff] [blame] | 49 | // setup position varying |
| 50 | vsBuilder->codeAppendf("%s = %s * vec3(%s, 1);", vsBuilder->glPosition(), |
joshualitt | 2dd1ae0 | 2014-12-03 06:24:10 -0800 | [diff] [blame] | 51 | vsBuilder->uViewM(), dfTexEffect.inPosition()->fName); |
| 52 | |
| 53 | // setup output coords |
| 54 | vsBuilder->codeAppendf("%s = %s;", vsBuilder->positionCoords(), |
| 55 | dfTexEffect.inPosition()->fName); |
| 56 | vsBuilder->codeAppendf("%s = %s;", vsBuilder->localCoords(), |
| 57 | dfTexEffect.inPosition()->fName); |
joshualitt | 4973d9d | 2014-11-08 09:24:25 -0800 | [diff] [blame] | 58 | |
commit-bot@chromium.org | 6c89c34 | 2014-02-14 21:48:29 +0000 | [diff] [blame] | 59 | const char* textureSizeUniName = NULL; |
joshualitt | c369e7c | 2014-10-22 10:56:26 -0700 | [diff] [blame] | 60 | fTextureSizeUni = args.fPB->addUniform(GrGLProgramBuilder::kFragment_Visibility, |
bsalomon | 422f56f | 2014-12-09 10:18:12 -0800 | [diff] [blame] | 61 | kVec2f_GrSLType, kDefault_GrSLPrecision, |
| 62 | "TextureSize", &textureSizeUniName); |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 63 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 64 | fsBuilder->codeAppend("\tvec4 texColor = "); |
joshualitt | c369e7c | 2014-10-22 10:56:26 -0700 | [diff] [blame] | 65 | fsBuilder->appendTextureLookup(args.fSamplers[0], |
joshualitt | 74077b9 | 2014-10-24 11:26:03 -0700 | [diff] [blame] | 66 | v.fsIn(), |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 67 | kVec2f_GrSLType); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 68 | fsBuilder->codeAppend(";\n"); |
| 69 | fsBuilder->codeAppend("\tfloat distance = " |
jvanverth | ada68ef | 2014-11-03 14:00:24 -0800 | [diff] [blame] | 70 | SK_DistanceFieldMultiplier "*(texColor.r - " SK_DistanceFieldThreshold ");"); |
commit-bot@chromium.org | 6c89c34 | 2014-02-14 21:48:29 +0000 | [diff] [blame] | 71 | |
| 72 | // we adjust for the effect of the transformation on the distance by using |
| 73 | // the length of the gradient of the texture coordinates. We use st coordinates |
| 74 | // to ensure we're mapping 1:1 from texel space to pixel space. |
joshualitt | 74077b9 | 2014-10-24 11:26:03 -0700 | [diff] [blame] | 75 | fsBuilder->codeAppendf("\tvec2 uv = %s;\n", v.fsIn()); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 76 | fsBuilder->codeAppendf("\tvec2 st = uv*%s;\n", textureSizeUniName); |
| 77 | fsBuilder->codeAppend("\tfloat afwidth;\n"); |
jvanverth | 78f0718 | 2014-07-30 06:17:59 -0700 | [diff] [blame] | 78 | if (dfTexEffect.getFlags() & kSimilarity_DistanceFieldEffectFlag) { |
commit-bot@chromium.org | 4362a38 | 2014-03-26 19:49:03 +0000 | [diff] [blame] | 79 | // this gives us a smooth step across approximately one fragment |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 80 | fsBuilder->codeAppend("\tafwidth = abs(" SK_DistanceFieldAAFactor "*dFdx(st.x));\n"); |
commit-bot@chromium.org | 4362a38 | 2014-03-26 19:49:03 +0000 | [diff] [blame] | 81 | } else { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 82 | fsBuilder->codeAppend("\tvec2 Jdx = dFdx(st);\n"); |
| 83 | fsBuilder->codeAppend("\tvec2 Jdy = dFdy(st);\n"); |
commit-bot@chromium.org | 6c89c34 | 2014-02-14 21:48:29 +0000 | [diff] [blame] | 84 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 85 | fsBuilder->codeAppend("\tvec2 uv_grad;\n"); |
joshualitt | c369e7c | 2014-10-22 10:56:26 -0700 | [diff] [blame] | 86 | if (args.fPB->ctxInfo().caps()->dropsTileOnZeroDivide()) { |
commit-bot@chromium.org | 4362a38 | 2014-03-26 19:49:03 +0000 | [diff] [blame] | 87 | // this is to compensate for the Adreno, which likes to drop tiles on division by 0 |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 88 | fsBuilder->codeAppend("\tfloat uv_len2 = dot(uv, uv);\n"); |
| 89 | fsBuilder->codeAppend("\tif (uv_len2 < 0.0001) {\n"); |
| 90 | fsBuilder->codeAppend("\t\tuv_grad = vec2(0.7071, 0.7071);\n"); |
| 91 | fsBuilder->codeAppend("\t} else {\n"); |
| 92 | fsBuilder->codeAppend("\t\tuv_grad = uv*inversesqrt(uv_len2);\n"); |
| 93 | fsBuilder->codeAppend("\t}\n"); |
commit-bot@chromium.org | 4362a38 | 2014-03-26 19:49:03 +0000 | [diff] [blame] | 94 | } else { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 95 | fsBuilder->codeAppend("\tuv_grad = normalize(uv);\n"); |
commit-bot@chromium.org | 4362a38 | 2014-03-26 19:49:03 +0000 | [diff] [blame] | 96 | } |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 97 | fsBuilder->codeAppend("\tvec2 grad = vec2(uv_grad.x*Jdx.x + uv_grad.y*Jdy.x,\n"); |
| 98 | fsBuilder->codeAppend("\t uv_grad.x*Jdx.y + uv_grad.y*Jdy.y);\n"); |
commit-bot@chromium.org | 4362a38 | 2014-03-26 19:49:03 +0000 | [diff] [blame] | 99 | |
| 100 | // this gives us a smooth step across approximately one fragment |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 101 | fsBuilder->codeAppend("\tafwidth = " SK_DistanceFieldAAFactor "*length(grad);\n"); |
commit-bot@chromium.org | 4362a38 | 2014-03-26 19:49:03 +0000 | [diff] [blame] | 102 | } |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 103 | fsBuilder->codeAppend("\tfloat val = smoothstep(-afwidth, afwidth, distance);\n"); |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 104 | |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 105 | #ifdef SK_GAMMA_APPLY_TO_A8 |
| 106 | // adjust based on gamma |
| 107 | const char* luminanceUniName = NULL; |
| 108 | // width, height, 1/(3*width) |
joshualitt | c369e7c | 2014-10-22 10:56:26 -0700 | [diff] [blame] | 109 | fLuminanceUni = args.fPB->addUniform(GrGLProgramBuilder::kFragment_Visibility, |
bsalomon | 422f56f | 2014-12-09 10:18:12 -0800 | [diff] [blame] | 110 | kFloat_GrSLType, kDefault_GrSLPrecision, |
| 111 | "Luminance", &luminanceUniName); |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 112 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 113 | fsBuilder->codeAppendf("\tuv = vec2(val, %s);\n", luminanceUniName); |
| 114 | fsBuilder->codeAppend("\tvec4 gammaColor = "); |
joshualitt | c369e7c | 2014-10-22 10:56:26 -0700 | [diff] [blame] | 115 | fsBuilder->appendTextureLookup(args.fSamplers[1], "uv", kVec2f_GrSLType); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 116 | fsBuilder->codeAppend(";\n"); |
| 117 | fsBuilder->codeAppend("\tval = gammaColor.r;\n"); |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 118 | #endif |
| 119 | |
joshualitt | 2dd1ae0 | 2014-12-03 06:24:10 -0800 | [diff] [blame] | 120 | fsBuilder->codeAppendf("%s = vec4(val);", args.fOutputCoverage); |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 121 | } |
| 122 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 123 | virtual void setData(const GrGLProgramDataManager& pdman, |
joshualitt | 87f48d9 | 2014-12-04 10:41:40 -0800 | [diff] [blame] | 124 | const GrGeometryProcessor& proc, |
| 125 | const GrBatchTracker&) SK_OVERRIDE { |
commit-bot@chromium.org | 6c89c34 | 2014-02-14 21:48:29 +0000 | [diff] [blame] | 126 | SkASSERT(fTextureSizeUni.isValid()); |
commit-bot@chromium.org | 4362a38 | 2014-03-26 19:49:03 +0000 | [diff] [blame] | 127 | |
joshualitt | 87f48d9 | 2014-12-04 10:41:40 -0800 | [diff] [blame] | 128 | GrTexture* texture = proc.texture(0); |
commit-bot@chromium.org | 4362a38 | 2014-03-26 19:49:03 +0000 | [diff] [blame] | 129 | if (texture->width() != fTextureSize.width() || |
| 130 | texture->height() != fTextureSize.height()) { |
| 131 | fTextureSize = SkISize::Make(texture->width(), texture->height()); |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 132 | pdman.set2f(fTextureSizeUni, |
| 133 | SkIntToScalar(fTextureSize.width()), |
| 134 | SkIntToScalar(fTextureSize.height())); |
commit-bot@chromium.org | 66beaf0 | 2014-03-26 18:21:55 +0000 | [diff] [blame] | 135 | } |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 136 | #ifdef SK_GAMMA_APPLY_TO_A8 |
| 137 | const GrDistanceFieldTextureEffect& dfTexEffect = |
joshualitt | 87f48d9 | 2014-12-04 10:41:40 -0800 | [diff] [blame] | 138 | proc.cast<GrDistanceFieldTextureEffect>(); |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 139 | float luminance = dfTexEffect.getLuminance(); |
| 140 | if (luminance != fLuminance) { |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 141 | pdman.set1f(fLuminanceUni, luminance); |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 142 | fLuminance = luminance; |
| 143 | } |
| 144 | #endif |
commit-bot@chromium.org | 8fe2ee1 | 2014-03-26 18:03:05 +0000 | [diff] [blame] | 145 | } |
| 146 | |
joshualitt | 87f48d9 | 2014-12-04 10:41:40 -0800 | [diff] [blame] | 147 | static inline void GenKey(const GrGeometryProcessor& processor, |
| 148 | const GrBatchTracker&, |
| 149 | const GrGLCaps&, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 150 | GrProcessorKeyBuilder* b) { |
commit-bot@chromium.org | 4362a38 | 2014-03-26 19:49:03 +0000 | [diff] [blame] | 151 | const GrDistanceFieldTextureEffect& dfTexEffect = |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 152 | processor.cast<GrDistanceFieldTextureEffect>(); |
commit-bot@chromium.org | 4362a38 | 2014-03-26 19:49:03 +0000 | [diff] [blame] | 153 | |
jvanverth | 78f0718 | 2014-07-30 06:17:59 -0700 | [diff] [blame] | 154 | b->add32(dfTexEffect.getFlags()); |
commit-bot@chromium.org | 4362a38 | 2014-03-26 19:49:03 +0000 | [diff] [blame] | 155 | } |
| 156 | |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 157 | private: |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 158 | GrGLProgramDataManager::UniformHandle fTextureSizeUni; |
| 159 | SkISize fTextureSize; |
| 160 | GrGLProgramDataManager::UniformHandle fLuminanceUni; |
| 161 | float fLuminance; |
commit-bot@chromium.org | 6c89c34 | 2014-02-14 21:48:29 +0000 | [diff] [blame] | 162 | |
joshualitt | 249af15 | 2014-09-15 11:41:13 -0700 | [diff] [blame] | 163 | typedef GrGLGeometryProcessor INHERITED; |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 164 | }; |
| 165 | |
| 166 | /////////////////////////////////////////////////////////////////////////////// |
| 167 | |
joshualitt | 2e3b3e3 | 2014-12-09 13:31:14 -0800 | [diff] [blame^] | 168 | GrDistanceFieldTextureEffect::GrDistanceFieldTextureEffect(GrColor color, |
| 169 | GrTexture* texture, |
commit-bot@chromium.org | 6c89c34 | 2014-02-14 21:48:29 +0000 | [diff] [blame] | 170 | const GrTextureParams& params, |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 171 | #ifdef SK_GAMMA_APPLY_TO_A8 |
| 172 | GrTexture* gamma, |
| 173 | const GrTextureParams& gammaParams, |
| 174 | float luminance, |
| 175 | #endif |
jvanverth | 78f0718 | 2014-07-30 06:17:59 -0700 | [diff] [blame] | 176 | uint32_t flags) |
joshualitt | 2e3b3e3 | 2014-12-09 13:31:14 -0800 | [diff] [blame^] | 177 | : INHERITED(color) |
| 178 | , fTextureAccess(texture, params) |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 179 | #ifdef SK_GAMMA_APPLY_TO_A8 |
| 180 | , fGammaTextureAccess(gamma, gammaParams) |
| 181 | , fLuminance(luminance) |
| 182 | #endif |
joshualitt | 249af15 | 2014-09-15 11:41:13 -0700 | [diff] [blame] | 183 | , fFlags(flags & kNonLCD_DistanceFieldEffectMask) |
joshualitt | 2dd1ae0 | 2014-12-03 06:24:10 -0800 | [diff] [blame] | 184 | , fInColor(NULL) { |
jvanverth | 78f0718 | 2014-07-30 06:17:59 -0700 | [diff] [blame] | 185 | SkASSERT(!(flags & ~kNonLCD_DistanceFieldEffectMask)); |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 186 | this->initClassID<GrDistanceFieldTextureEffect>(); |
joshualitt | 2dd1ae0 | 2014-12-03 06:24:10 -0800 | [diff] [blame] | 187 | fInPosition = &this->addVertexAttrib(GrAttribute("inPosition", kVec2f_GrVertexAttribType)); |
| 188 | if (flags & kColorAttr_DistanceFieldEffectFlag) { |
| 189 | fInColor = &this->addVertexAttrib(GrAttribute("inColor", kVec4ub_GrVertexAttribType)); |
| 190 | this->setHasVertexColor(); |
| 191 | } |
| 192 | fInTextureCoords = &this->addVertexAttrib(GrAttribute("inTextureCoords", |
| 193 | kVec2f_GrVertexAttribType)); |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 194 | this->addTextureAccess(&fTextureAccess); |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 195 | #ifdef SK_GAMMA_APPLY_TO_A8 |
| 196 | this->addTextureAccess(&fGammaTextureAccess); |
| 197 | #endif |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 198 | } |
| 199 | |
bsalomon | 0e08fc1 | 2014-10-15 08:19:04 -0700 | [diff] [blame] | 200 | bool GrDistanceFieldTextureEffect::onIsEqual(const GrGeometryProcessor& other) const { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 201 | const GrDistanceFieldTextureEffect& cte = other.cast<GrDistanceFieldTextureEffect>(); |
bsalomon | 420d7e9 | 2014-10-16 09:18:09 -0700 | [diff] [blame] | 202 | return |
jvanverth | 78f0718 | 2014-07-30 06:17:59 -0700 | [diff] [blame] | 203 | #ifdef SK_GAMMA_APPLY_TO_A8 |
jvanverth | 78f0718 | 2014-07-30 06:17:59 -0700 | [diff] [blame] | 204 | fLuminance == cte.fLuminance && |
| 205 | #endif |
| 206 | fFlags == cte.fFlags; |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 207 | } |
| 208 | |
egdaniel | 605dd0f | 2014-11-12 08:35:25 -0800 | [diff] [blame] | 209 | void GrDistanceFieldTextureEffect::onComputeInvariantOutput(GrInvariantOutput* inout) const { |
egdaniel | ccb2e38 | 2014-10-13 12:53:46 -0700 | [diff] [blame] | 210 | inout->mulByUnknownAlpha(); |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 211 | } |
| 212 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 213 | void GrDistanceFieldTextureEffect::getGLProcessorKey(const GrBatchTracker& bt, |
| 214 | const GrGLCaps& caps, |
| 215 | GrProcessorKeyBuilder* b) const { |
| 216 | GrGLDistanceFieldTextureEffect::GenKey(*this, bt, caps, b); |
| 217 | } |
| 218 | |
| 219 | GrGLGeometryProcessor* |
| 220 | GrDistanceFieldTextureEffect::createGLInstance(const GrBatchTracker& bt) const { |
| 221 | return SkNEW_ARGS(GrGLDistanceFieldTextureEffect, (*this, bt)); |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 222 | } |
| 223 | |
| 224 | /////////////////////////////////////////////////////////////////////////////// |
| 225 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 226 | GR_DEFINE_GEOMETRY_PROCESSOR_TEST(GrDistanceFieldTextureEffect); |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 227 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 228 | GrGeometryProcessor* GrDistanceFieldTextureEffect::TestCreate(SkRandom* random, |
| 229 | GrContext*, |
| 230 | const GrDrawTargetCaps&, |
| 231 | GrTexture* textures[]) { |
| 232 | int texIdx = random->nextBool() ? GrProcessorUnitTest::kSkiaPMTextureIdx : |
| 233 | GrProcessorUnitTest::kAlphaTextureIdx; |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 234 | #ifdef SK_GAMMA_APPLY_TO_A8 |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 235 | int texIdx2 = random->nextBool() ? GrProcessorUnitTest::kSkiaPMTextureIdx : |
| 236 | GrProcessorUnitTest::kAlphaTextureIdx; |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 237 | #endif |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 238 | static const SkShader::TileMode kTileModes[] = { |
| 239 | SkShader::kClamp_TileMode, |
| 240 | SkShader::kRepeat_TileMode, |
| 241 | SkShader::kMirror_TileMode, |
| 242 | }; |
| 243 | SkShader::TileMode tileModes[] = { |
| 244 | kTileModes[random->nextULessThan(SK_ARRAY_COUNT(kTileModes))], |
| 245 | kTileModes[random->nextULessThan(SK_ARRAY_COUNT(kTileModes))], |
| 246 | }; |
| 247 | GrTextureParams params(tileModes, random->nextBool() ? GrTextureParams::kBilerp_FilterMode : |
| 248 | GrTextureParams::kNone_FilterMode); |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 249 | #ifdef SK_GAMMA_APPLY_TO_A8 |
| 250 | GrTextureParams params2(tileModes, random->nextBool() ? GrTextureParams::kBilerp_FilterMode : |
| 251 | GrTextureParams::kNone_FilterMode); |
| 252 | #endif |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 253 | |
joshualitt | 2e3b3e3 | 2014-12-09 13:31:14 -0800 | [diff] [blame^] | 254 | return GrDistanceFieldTextureEffect::Create(GrRandomColor(random), textures[texIdx], params, |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 255 | #ifdef SK_GAMMA_APPLY_TO_A8 |
| 256 | textures[texIdx2], params2, |
| 257 | random->nextF(), |
| 258 | #endif |
jvanverth | 78f0718 | 2014-07-30 06:17:59 -0700 | [diff] [blame] | 259 | random->nextBool() ? |
| 260 | kSimilarity_DistanceFieldEffectFlag : 0); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 261 | } |
| 262 | |
| 263 | /////////////////////////////////////////////////////////////////////////////// |
| 264 | |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 265 | class GrGLDistanceFieldNoGammaTextureEffect : public GrGLGeometryProcessor { |
| 266 | public: |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 267 | GrGLDistanceFieldNoGammaTextureEffect(const GrGeometryProcessor&, |
joshualitt | 87f48d9 | 2014-12-04 10:41:40 -0800 | [diff] [blame] | 268 | const GrBatchTracker&) |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 269 | : fTextureSize(SkISize::Make(-1, -1)) {} |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 270 | |
joshualitt | c369e7c | 2014-10-22 10:56:26 -0700 | [diff] [blame] | 271 | virtual void emitCode(const EmitArgs& args) SK_OVERRIDE { |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 272 | const GrDistanceFieldNoGammaTextureEffect& dfTexEffect = |
joshualitt | c369e7c | 2014-10-22 10:56:26 -0700 | [diff] [blame] | 273 | args.fGP.cast<GrDistanceFieldNoGammaTextureEffect>(); |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 274 | |
joshualitt | c369e7c | 2014-10-22 10:56:26 -0700 | [diff] [blame] | 275 | GrGLGPFragmentBuilder* fsBuilder = args.fPB->getFragmentShaderBuilder(); |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 276 | SkAssertResult(fsBuilder->enableFeature( |
| 277 | GrGLFragmentShaderBuilder::kStandardDerivatives_GLSLFeature)); |
| 278 | |
joshualitt | 2dd1ae0 | 2014-12-03 06:24:10 -0800 | [diff] [blame] | 279 | GrGLVertexBuilder* vsBuilder = args.fPB->getVertexShaderBuilder(); |
joshualitt | 74077b9 | 2014-10-24 11:26:03 -0700 | [diff] [blame] | 280 | GrGLVertToFrag v(kVec2f_GrSLType); |
| 281 | args.fPB->addVarying("TextureCoords", &v); |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 282 | |
joshualitt | 2dd1ae0 | 2014-12-03 06:24:10 -0800 | [diff] [blame] | 283 | // setup color attribute |
| 284 | if(dfTexEffect.inColor()) { |
| 285 | args.fPB->addPassThroughAttribute(dfTexEffect.inColor(), args.fOutputColor); |
| 286 | } |
| 287 | |
| 288 | vsBuilder->codeAppendf("%s = %s;", v.vsOut(), dfTexEffect.inTextureCoords()->fName); |
| 289 | |
| 290 | // setup coord outputs |
| 291 | vsBuilder->codeAppendf("%s = %s;", vsBuilder->positionCoords(), |
| 292 | dfTexEffect.inPosition()->fName); |
| 293 | vsBuilder->codeAppendf("%s = %s;", vsBuilder->localCoords(), |
| 294 | dfTexEffect.inPosition()->fName); |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 295 | |
joshualitt | 4973d9d | 2014-11-08 09:24:25 -0800 | [diff] [blame] | 296 | // setup position varying |
| 297 | vsBuilder->codeAppendf("%s = %s * vec3(%s, 1);", vsBuilder->glPosition(), |
joshualitt | 2dd1ae0 | 2014-12-03 06:24:10 -0800 | [diff] [blame] | 298 | vsBuilder->uViewM(), dfTexEffect.inPosition()->fName); |
joshualitt | 4973d9d | 2014-11-08 09:24:25 -0800 | [diff] [blame] | 299 | |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 300 | const char* textureSizeUniName = NULL; |
joshualitt | c369e7c | 2014-10-22 10:56:26 -0700 | [diff] [blame] | 301 | fTextureSizeUni = args.fPB->addUniform(GrGLProgramBuilder::kFragment_Visibility, |
bsalomon | 422f56f | 2014-12-09 10:18:12 -0800 | [diff] [blame] | 302 | kVec2f_GrSLType, kDefault_GrSLPrecision, |
| 303 | "TextureSize", &textureSizeUniName); |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 304 | |
| 305 | fsBuilder->codeAppend("vec4 texColor = "); |
joshualitt | c369e7c | 2014-10-22 10:56:26 -0700 | [diff] [blame] | 306 | fsBuilder->appendTextureLookup(args.fSamplers[0], |
joshualitt | 74077b9 | 2014-10-24 11:26:03 -0700 | [diff] [blame] | 307 | v.fsIn(), |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 308 | kVec2f_GrSLType); |
| 309 | fsBuilder->codeAppend(";"); |
| 310 | fsBuilder->codeAppend("float distance = " |
| 311 | SK_DistanceFieldMultiplier "*(texColor.r - " SK_DistanceFieldThreshold ");"); |
| 312 | |
| 313 | // we adjust for the effect of the transformation on the distance by using |
| 314 | // the length of the gradient of the texture coordinates. We use st coordinates |
| 315 | // to ensure we're mapping 1:1 from texel space to pixel space. |
joshualitt | 74077b9 | 2014-10-24 11:26:03 -0700 | [diff] [blame] | 316 | fsBuilder->codeAppendf("vec2 uv = %s;", v.fsIn()); |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 317 | fsBuilder->codeAppendf("vec2 st = uv*%s;", textureSizeUniName); |
| 318 | fsBuilder->codeAppend("float afwidth;"); |
| 319 | if (dfTexEffect.getFlags() & kSimilarity_DistanceFieldEffectFlag) { |
| 320 | // this gives us a smooth step across approximately one fragment |
| 321 | fsBuilder->codeAppend("afwidth = abs(" SK_DistanceFieldAAFactor "*dFdx(st.x));"); |
| 322 | } else { |
| 323 | fsBuilder->codeAppend("vec2 Jdx = dFdx(st);"); |
| 324 | fsBuilder->codeAppend("vec2 Jdy = dFdy(st);"); |
| 325 | |
| 326 | fsBuilder->codeAppend("vec2 uv_grad;"); |
joshualitt | c369e7c | 2014-10-22 10:56:26 -0700 | [diff] [blame] | 327 | if (args.fPB->ctxInfo().caps()->dropsTileOnZeroDivide()) { |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 328 | // this is to compensate for the Adreno, which likes to drop tiles on division by 0 |
| 329 | fsBuilder->codeAppend("float uv_len2 = dot(uv, uv);"); |
| 330 | fsBuilder->codeAppend("if (uv_len2 < 0.0001) {"); |
| 331 | fsBuilder->codeAppend("uv_grad = vec2(0.7071, 0.7071);"); |
| 332 | fsBuilder->codeAppend("} else {"); |
| 333 | fsBuilder->codeAppend("uv_grad = uv*inversesqrt(uv_len2);"); |
| 334 | fsBuilder->codeAppend("}"); |
| 335 | } else { |
| 336 | fsBuilder->codeAppend("uv_grad = normalize(uv);"); |
| 337 | } |
| 338 | fsBuilder->codeAppend("vec2 grad = vec2(uv_grad.x*Jdx.x + uv_grad.y*Jdy.x,"); |
| 339 | fsBuilder->codeAppend(" uv_grad.x*Jdx.y + uv_grad.y*Jdy.y);"); |
| 340 | |
| 341 | // this gives us a smooth step across approximately one fragment |
| 342 | fsBuilder->codeAppend("afwidth = " SK_DistanceFieldAAFactor "*length(grad);"); |
| 343 | } |
| 344 | fsBuilder->codeAppend("float val = smoothstep(-afwidth, afwidth, distance);"); |
| 345 | |
joshualitt | 2dd1ae0 | 2014-12-03 06:24:10 -0800 | [diff] [blame] | 346 | fsBuilder->codeAppendf("%s = vec4(val);", args.fOutputCoverage); |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 347 | } |
| 348 | |
| 349 | virtual void setData(const GrGLProgramDataManager& pdman, |
joshualitt | 87f48d9 | 2014-12-04 10:41:40 -0800 | [diff] [blame] | 350 | const GrGeometryProcessor& proc, |
| 351 | const GrBatchTracker&) SK_OVERRIDE { |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 352 | SkASSERT(fTextureSizeUni.isValid()); |
| 353 | |
joshualitt | 87f48d9 | 2014-12-04 10:41:40 -0800 | [diff] [blame] | 354 | GrTexture* texture = proc.texture(0); |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 355 | if (texture->width() != fTextureSize.width() || |
| 356 | texture->height() != fTextureSize.height()) { |
| 357 | fTextureSize = SkISize::Make(texture->width(), texture->height()); |
| 358 | pdman.set2f(fTextureSizeUni, |
| 359 | SkIntToScalar(fTextureSize.width()), |
| 360 | SkIntToScalar(fTextureSize.height())); |
| 361 | } |
| 362 | } |
| 363 | |
joshualitt | 87f48d9 | 2014-12-04 10:41:40 -0800 | [diff] [blame] | 364 | static inline void GenKey(const GrGeometryProcessor& proc, |
| 365 | const GrBatchTracker&, |
| 366 | const GrGLCaps&, |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 367 | GrProcessorKeyBuilder* b) { |
| 368 | const GrDistanceFieldNoGammaTextureEffect& dfTexEffect = |
joshualitt | 87f48d9 | 2014-12-04 10:41:40 -0800 | [diff] [blame] | 369 | proc.cast<GrDistanceFieldNoGammaTextureEffect>(); |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 370 | |
| 371 | b->add32(dfTexEffect.getFlags()); |
| 372 | } |
| 373 | |
| 374 | private: |
| 375 | GrGLProgramDataManager::UniformHandle fTextureSizeUni; |
| 376 | SkISize fTextureSize; |
| 377 | |
| 378 | typedef GrGLGeometryProcessor INHERITED; |
| 379 | }; |
| 380 | |
| 381 | /////////////////////////////////////////////////////////////////////////////// |
| 382 | |
joshualitt | 2e3b3e3 | 2014-12-09 13:31:14 -0800 | [diff] [blame^] | 383 | GrDistanceFieldNoGammaTextureEffect::GrDistanceFieldNoGammaTextureEffect( |
| 384 | GrColor color, |
| 385 | GrTexture* texture, |
| 386 | const GrTextureParams& params, |
| 387 | uint32_t flags) |
| 388 | : INHERITED(color) |
| 389 | , fTextureAccess(texture, params) |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 390 | , fFlags(flags & kNonLCD_DistanceFieldEffectMask) |
joshualitt | 2dd1ae0 | 2014-12-03 06:24:10 -0800 | [diff] [blame] | 391 | , fInColor(NULL) { |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 392 | SkASSERT(!(flags & ~kNonLCD_DistanceFieldEffectMask)); |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 393 | this->initClassID<GrDistanceFieldNoGammaTextureEffect>(); |
joshualitt | 2dd1ae0 | 2014-12-03 06:24:10 -0800 | [diff] [blame] | 394 | fInPosition = &this->addVertexAttrib(GrAttribute("inPosition", kVec2f_GrVertexAttribType)); |
| 395 | if (flags & kColorAttr_DistanceFieldEffectFlag) { |
| 396 | fInColor = &this->addVertexAttrib(GrAttribute("inColor", kVec4ub_GrVertexAttribType)); |
| 397 | this->setHasVertexColor(); |
| 398 | } |
| 399 | fInTextureCoords = &this->addVertexAttrib(GrAttribute("inTextureCoords", |
| 400 | kVec2f_GrVertexAttribType)); |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 401 | this->addTextureAccess(&fTextureAccess); |
| 402 | } |
| 403 | |
bsalomon | 0e08fc1 | 2014-10-15 08:19:04 -0700 | [diff] [blame] | 404 | bool GrDistanceFieldNoGammaTextureEffect::onIsEqual(const GrGeometryProcessor& other) const { |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 405 | const GrDistanceFieldNoGammaTextureEffect& cte = |
| 406 | other.cast<GrDistanceFieldNoGammaTextureEffect>(); |
bsalomon | 420d7e9 | 2014-10-16 09:18:09 -0700 | [diff] [blame] | 407 | return fFlags == cte.fFlags; |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 408 | } |
| 409 | |
egdaniel | 605dd0f | 2014-11-12 08:35:25 -0800 | [diff] [blame] | 410 | void GrDistanceFieldNoGammaTextureEffect::onComputeInvariantOutput(GrInvariantOutput* inout) const { |
egdaniel | ccb2e38 | 2014-10-13 12:53:46 -0700 | [diff] [blame] | 411 | inout->mulByUnknownAlpha(); |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 412 | } |
| 413 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 414 | void GrDistanceFieldNoGammaTextureEffect::getGLProcessorKey(const GrBatchTracker& bt, |
| 415 | const GrGLCaps& caps, |
| 416 | GrProcessorKeyBuilder* b) const { |
| 417 | GrGLDistanceFieldNoGammaTextureEffect::GenKey(*this, bt, caps, b); |
| 418 | } |
| 419 | |
| 420 | GrGLGeometryProcessor* |
| 421 | GrDistanceFieldNoGammaTextureEffect::createGLInstance(const GrBatchTracker& bt) const { |
| 422 | return SkNEW_ARGS(GrGLDistanceFieldNoGammaTextureEffect, (*this, bt)); |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 423 | } |
| 424 | |
| 425 | /////////////////////////////////////////////////////////////////////////////// |
| 426 | |
| 427 | GR_DEFINE_GEOMETRY_PROCESSOR_TEST(GrDistanceFieldNoGammaTextureEffect); |
| 428 | |
| 429 | GrGeometryProcessor* GrDistanceFieldNoGammaTextureEffect::TestCreate(SkRandom* random, |
| 430 | GrContext*, |
| 431 | const GrDrawTargetCaps&, |
| 432 | GrTexture* textures[]) { |
| 433 | int texIdx = random->nextBool() ? GrProcessorUnitTest::kSkiaPMTextureIdx |
| 434 | : GrProcessorUnitTest::kAlphaTextureIdx; |
| 435 | static const SkShader::TileMode kTileModes[] = { |
| 436 | SkShader::kClamp_TileMode, |
| 437 | SkShader::kRepeat_TileMode, |
| 438 | SkShader::kMirror_TileMode, |
| 439 | }; |
| 440 | SkShader::TileMode tileModes[] = { |
| 441 | kTileModes[random->nextULessThan(SK_ARRAY_COUNT(kTileModes))], |
| 442 | kTileModes[random->nextULessThan(SK_ARRAY_COUNT(kTileModes))], |
| 443 | }; |
| 444 | GrTextureParams params(tileModes, random->nextBool() ? GrTextureParams::kBilerp_FilterMode |
| 445 | : GrTextureParams::kNone_FilterMode); |
| 446 | |
joshualitt | 2e3b3e3 | 2014-12-09 13:31:14 -0800 | [diff] [blame^] | 447 | return GrDistanceFieldNoGammaTextureEffect::Create(GrRandomColor(random), textures[texIdx], |
| 448 | params, |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 449 | random->nextBool() ? kSimilarity_DistanceFieldEffectFlag : 0); |
| 450 | } |
| 451 | |
| 452 | /////////////////////////////////////////////////////////////////////////////// |
| 453 | |
joshualitt | 249af15 | 2014-09-15 11:41:13 -0700 | [diff] [blame] | 454 | class GrGLDistanceFieldLCDTextureEffect : public GrGLGeometryProcessor { |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 455 | public: |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 456 | GrGLDistanceFieldLCDTextureEffect(const GrGeometryProcessor&, |
joshualitt | 87f48d9 | 2014-12-04 10:41:40 -0800 | [diff] [blame] | 457 | const GrBatchTracker&) |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 458 | : fTextureSize(SkISize::Make(-1,-1)) |
jvanverth | 9564ce6 | 2014-09-16 05:45:19 -0700 | [diff] [blame] | 459 | , fTextColor(GrColor_ILLEGAL) {} |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 460 | |
joshualitt | c369e7c | 2014-10-22 10:56:26 -0700 | [diff] [blame] | 461 | virtual void emitCode(const EmitArgs& args) SK_OVERRIDE { |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 462 | const GrDistanceFieldLCDTextureEffect& dfTexEffect = |
joshualitt | c369e7c | 2014-10-22 10:56:26 -0700 | [diff] [blame] | 463 | args.fGP.cast<GrDistanceFieldLCDTextureEffect>(); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 464 | |
joshualitt | c369e7c | 2014-10-22 10:56:26 -0700 | [diff] [blame] | 465 | GrGLVertexBuilder* vsBuilder = args.fPB->getVertexShaderBuilder(); |
joshualitt | 2dd1ae0 | 2014-12-03 06:24:10 -0800 | [diff] [blame] | 466 | GrGLVertToFrag v(kVec2f_GrSLType); |
| 467 | args.fPB->addVarying("TextureCoords", &v); |
| 468 | vsBuilder->codeAppendf("%s = %s;", v.vsOut(), dfTexEffect.inTextureCoords()->fName); |
| 469 | |
| 470 | // setup coord outputs |
| 471 | vsBuilder->codeAppendf("%s = %s;", vsBuilder->positionCoords(), |
| 472 | dfTexEffect.inPosition()->fName); |
| 473 | vsBuilder->codeAppendf("%s = %s;", vsBuilder->localCoords(), |
| 474 | dfTexEffect.inPosition()->fName); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 475 | |
joshualitt | 4973d9d | 2014-11-08 09:24:25 -0800 | [diff] [blame] | 476 | // setup position varying |
| 477 | vsBuilder->codeAppendf("%s = %s * vec3(%s, 1);", vsBuilder->glPosition(), |
joshualitt | 2dd1ae0 | 2014-12-03 06:24:10 -0800 | [diff] [blame] | 478 | vsBuilder->uViewM(), dfTexEffect.inPosition()->fName); |
joshualitt | 4973d9d | 2014-11-08 09:24:25 -0800 | [diff] [blame] | 479 | |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 480 | const char* textureSizeUniName = NULL; |
| 481 | // width, height, 1/(3*width) |
joshualitt | c369e7c | 2014-10-22 10:56:26 -0700 | [diff] [blame] | 482 | fTextureSizeUni = args.fPB->addUniform(GrGLProgramBuilder::kFragment_Visibility, |
bsalomon | 422f56f | 2014-12-09 10:18:12 -0800 | [diff] [blame] | 483 | kVec3f_GrSLType, kDefault_GrSLPrecision, |
| 484 | "TextureSize", &textureSizeUniName); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 485 | |
joshualitt | c369e7c | 2014-10-22 10:56:26 -0700 | [diff] [blame] | 486 | GrGLGPFragmentBuilder* fsBuilder = args.fPB->getFragmentShaderBuilder(); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 487 | |
| 488 | SkAssertResult(fsBuilder->enableFeature( |
| 489 | GrGLFragmentShaderBuilder::kStandardDerivatives_GLSLFeature)); |
| 490 | |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 491 | // create LCD offset adjusted by inverse of transform |
joshualitt | 74077b9 | 2014-10-24 11:26:03 -0700 | [diff] [blame] | 492 | fsBuilder->codeAppendf("\tvec2 uv = %s;\n", v.fsIn()); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 493 | fsBuilder->codeAppendf("\tvec2 st = uv*%s.xy;\n", textureSizeUniName); |
jvanverth | 78f0718 | 2014-07-30 06:17:59 -0700 | [diff] [blame] | 494 | bool isUniformScale = !!(dfTexEffect.getFlags() & kUniformScale_DistanceFieldEffectMask); |
| 495 | if (isUniformScale) { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 496 | fsBuilder->codeAppend("\tfloat dx = dFdx(st.x);\n"); |
| 497 | fsBuilder->codeAppendf("\tvec2 offset = vec2(dx*%s.z, 0.0);\n", textureSizeUniName); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 498 | } else { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 499 | fsBuilder->codeAppend("\tvec2 Jdx = dFdx(st);\n"); |
| 500 | fsBuilder->codeAppend("\tvec2 Jdy = dFdy(st);\n"); |
| 501 | fsBuilder->codeAppendf("\tvec2 offset = %s.z*Jdx;\n", textureSizeUniName); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 502 | } |
| 503 | |
| 504 | // green is distance to uv center |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 505 | fsBuilder->codeAppend("\tvec4 texColor = "); |
joshualitt | c369e7c | 2014-10-22 10:56:26 -0700 | [diff] [blame] | 506 | fsBuilder->appendTextureLookup(args.fSamplers[0], "uv", kVec2f_GrSLType); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 507 | fsBuilder->codeAppend(";\n"); |
| 508 | fsBuilder->codeAppend("\tvec3 distance;\n"); |
| 509 | fsBuilder->codeAppend("\tdistance.y = texColor.r;\n"); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 510 | // red is distance to left offset |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 511 | fsBuilder->codeAppend("\tvec2 uv_adjusted = uv - offset;\n"); |
| 512 | fsBuilder->codeAppend("\ttexColor = "); |
joshualitt | c369e7c | 2014-10-22 10:56:26 -0700 | [diff] [blame] | 513 | fsBuilder->appendTextureLookup(args.fSamplers[0], "uv_adjusted", kVec2f_GrSLType); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 514 | fsBuilder->codeAppend(";\n"); |
| 515 | fsBuilder->codeAppend("\tdistance.x = texColor.r;\n"); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 516 | // blue is distance to right offset |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 517 | fsBuilder->codeAppend("\tuv_adjusted = uv + offset;\n"); |
| 518 | fsBuilder->codeAppend("\ttexColor = "); |
joshualitt | c369e7c | 2014-10-22 10:56:26 -0700 | [diff] [blame] | 519 | fsBuilder->appendTextureLookup(args.fSamplers[0], "uv_adjusted", kVec2f_GrSLType); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 520 | fsBuilder->codeAppend(";\n"); |
| 521 | fsBuilder->codeAppend("\tdistance.z = texColor.r;\n"); |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 522 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 523 | fsBuilder->codeAppend("\tdistance = " |
jvanverth | ada68ef | 2014-11-03 14:00:24 -0800 | [diff] [blame] | 524 | "vec3(" SK_DistanceFieldMultiplier ")*(distance - vec3(" SK_DistanceFieldThreshold"));"); |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 525 | |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 526 | // we adjust for the effect of the transformation on the distance by using |
| 527 | // the length of the gradient of the texture coordinates. We use st coordinates |
| 528 | // to ensure we're mapping 1:1 from texel space to pixel space. |
| 529 | |
| 530 | // To be strictly correct, we should compute the anti-aliasing factor separately |
| 531 | // for each color component. However, this is only important when using perspective |
| 532 | // transformations, and even then using a single factor seems like a reasonable |
| 533 | // trade-off between quality and speed. |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 534 | fsBuilder->codeAppend("\tfloat afwidth;\n"); |
jvanverth | 78f0718 | 2014-07-30 06:17:59 -0700 | [diff] [blame] | 535 | if (isUniformScale) { |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 536 | // this gives us a smooth step across approximately one fragment |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 537 | fsBuilder->codeAppend("\tafwidth = abs(" SK_DistanceFieldAAFactor "*dx);\n"); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 538 | } else { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 539 | fsBuilder->codeAppend("\tvec2 uv_grad;\n"); |
joshualitt | c369e7c | 2014-10-22 10:56:26 -0700 | [diff] [blame] | 540 | if (args.fPB->ctxInfo().caps()->dropsTileOnZeroDivide()) { |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 541 | // this is to compensate for the Adreno, which likes to drop tiles on division by 0 |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 542 | fsBuilder->codeAppend("\tfloat uv_len2 = dot(uv, uv);\n"); |
| 543 | fsBuilder->codeAppend("\tif (uv_len2 < 0.0001) {\n"); |
| 544 | fsBuilder->codeAppend("\t\tuv_grad = vec2(0.7071, 0.7071);\n"); |
| 545 | fsBuilder->codeAppend("\t} else {\n"); |
| 546 | fsBuilder->codeAppend("\t\tuv_grad = uv*inversesqrt(uv_len2);\n"); |
| 547 | fsBuilder->codeAppend("\t}\n"); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 548 | } else { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 549 | fsBuilder->codeAppend("\tuv_grad = normalize(uv);\n"); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 550 | } |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 551 | fsBuilder->codeAppend("\tvec2 grad = vec2(uv_grad.x*Jdx.x + uv_grad.y*Jdy.x,\n"); |
| 552 | fsBuilder->codeAppend("\t uv_grad.x*Jdx.y + uv_grad.y*Jdy.y);\n"); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 553 | |
| 554 | // this gives us a smooth step across approximately one fragment |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 555 | fsBuilder->codeAppend("\tafwidth = " SK_DistanceFieldAAFactor "*length(grad);\n"); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 556 | } |
| 557 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 558 | fsBuilder->codeAppend("\tvec4 val = vec4(smoothstep(vec3(-afwidth), vec3(afwidth), distance), 1.0);\n"); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 559 | |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 560 | // adjust based on gamma |
| 561 | const char* textColorUniName = NULL; |
| 562 | // width, height, 1/(3*width) |
joshualitt | c369e7c | 2014-10-22 10:56:26 -0700 | [diff] [blame] | 563 | fTextColorUni = args.fPB->addUniform(GrGLProgramBuilder::kFragment_Visibility, |
bsalomon | 422f56f | 2014-12-09 10:18:12 -0800 | [diff] [blame] | 564 | kVec3f_GrSLType, kDefault_GrSLPrecision, |
| 565 | "TextColor", &textColorUniName); |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 566 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 567 | fsBuilder->codeAppendf("\tuv = vec2(val.x, %s.x);\n", textColorUniName); |
| 568 | fsBuilder->codeAppend("\tvec4 gammaColor = "); |
joshualitt | c369e7c | 2014-10-22 10:56:26 -0700 | [diff] [blame] | 569 | fsBuilder->appendTextureLookup(args.fSamplers[1], "uv", kVec2f_GrSLType); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 570 | fsBuilder->codeAppend(";\n"); |
| 571 | fsBuilder->codeAppend("\tval.x = gammaColor.r;\n"); |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 572 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 573 | fsBuilder->codeAppendf("\tuv = vec2(val.y, %s.y);\n", textColorUniName); |
| 574 | fsBuilder->codeAppend("\tgammaColor = "); |
joshualitt | c369e7c | 2014-10-22 10:56:26 -0700 | [diff] [blame] | 575 | fsBuilder->appendTextureLookup(args.fSamplers[1], "uv", kVec2f_GrSLType); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 576 | fsBuilder->codeAppend(";\n"); |
| 577 | fsBuilder->codeAppend("\tval.y = gammaColor.r;\n"); |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 578 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 579 | fsBuilder->codeAppendf("\tuv = vec2(val.z, %s.z);\n", textColorUniName); |
| 580 | fsBuilder->codeAppend("\tgammaColor = "); |
joshualitt | c369e7c | 2014-10-22 10:56:26 -0700 | [diff] [blame] | 581 | fsBuilder->appendTextureLookup(args.fSamplers[1], "uv", kVec2f_GrSLType); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 582 | fsBuilder->codeAppend(";\n"); |
| 583 | fsBuilder->codeAppend("\tval.z = gammaColor.r;\n"); |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 584 | |
joshualitt | 2dd1ae0 | 2014-12-03 06:24:10 -0800 | [diff] [blame] | 585 | fsBuilder->codeAppendf("%s = vec4(val);", args.fOutputCoverage); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 586 | } |
| 587 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 588 | virtual void setData(const GrGLProgramDataManager& pdman, |
joshualitt | 87f48d9 | 2014-12-04 10:41:40 -0800 | [diff] [blame] | 589 | const GrGeometryProcessor& processor, |
| 590 | const GrBatchTracker&) SK_OVERRIDE { |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 591 | SkASSERT(fTextureSizeUni.isValid()); |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 592 | SkASSERT(fTextColorUni.isValid()); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 593 | |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 594 | const GrDistanceFieldLCDTextureEffect& dfTexEffect = |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 595 | processor.cast<GrDistanceFieldLCDTextureEffect>(); |
| 596 | GrTexture* texture = processor.texture(0); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 597 | if (texture->width() != fTextureSize.width() || |
| 598 | texture->height() != fTextureSize.height()) { |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 599 | fTextureSize = SkISize::Make(texture->width(), texture->height()); |
| 600 | float delta = 1.0f/(3.0f*texture->width()); |
jvanverth | 78f0718 | 2014-07-30 06:17:59 -0700 | [diff] [blame] | 601 | if (dfTexEffect.getFlags() & kBGR_DistanceFieldEffectFlag) { |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 602 | delta = -delta; |
| 603 | } |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 604 | pdman.set3f(fTextureSizeUni, |
| 605 | SkIntToScalar(fTextureSize.width()), |
| 606 | SkIntToScalar(fTextureSize.height()), |
| 607 | delta); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 608 | } |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 609 | |
| 610 | GrColor textColor = dfTexEffect.getTextColor(); |
| 611 | if (textColor != fTextColor) { |
| 612 | static const float ONE_OVER_255 = 1.f / 255.f; |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 613 | pdman.set3f(fTextColorUni, |
| 614 | GrColorUnpackR(textColor) * ONE_OVER_255, |
| 615 | GrColorUnpackG(textColor) * ONE_OVER_255, |
| 616 | GrColorUnpackB(textColor) * ONE_OVER_255); |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 617 | fTextColor = textColor; |
| 618 | } |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 619 | } |
| 620 | |
joshualitt | 87f48d9 | 2014-12-04 10:41:40 -0800 | [diff] [blame] | 621 | static inline void GenKey(const GrGeometryProcessor& processor, |
| 622 | const GrBatchTracker&, |
| 623 | const GrGLCaps&, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 624 | GrProcessorKeyBuilder* b) { |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 625 | const GrDistanceFieldLCDTextureEffect& dfTexEffect = |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 626 | processor.cast<GrDistanceFieldLCDTextureEffect>(); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 627 | |
jvanverth | 78f0718 | 2014-07-30 06:17:59 -0700 | [diff] [blame] | 628 | b->add32(dfTexEffect.getFlags()); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 629 | } |
| 630 | |
| 631 | private: |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 632 | GrGLProgramDataManager::UniformHandle fTextureSizeUni; |
| 633 | SkISize fTextureSize; |
| 634 | GrGLProgramDataManager::UniformHandle fTextColorUni; |
| 635 | SkColor fTextColor; |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 636 | |
joshualitt | 249af15 | 2014-09-15 11:41:13 -0700 | [diff] [blame] | 637 | typedef GrGLGeometryProcessor INHERITED; |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 638 | }; |
| 639 | |
| 640 | /////////////////////////////////////////////////////////////////////////////// |
| 641 | |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 642 | GrDistanceFieldLCDTextureEffect::GrDistanceFieldLCDTextureEffect( |
joshualitt | 2e3b3e3 | 2014-12-09 13:31:14 -0800 | [diff] [blame^] | 643 | GrColor color, |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 644 | GrTexture* texture, const GrTextureParams& params, |
| 645 | GrTexture* gamma, const GrTextureParams& gParams, |
| 646 | SkColor textColor, |
jvanverth | 78f0718 | 2014-07-30 06:17:59 -0700 | [diff] [blame] | 647 | uint32_t flags) |
joshualitt | 2e3b3e3 | 2014-12-09 13:31:14 -0800 | [diff] [blame^] | 648 | : INHERITED(color) |
| 649 | , fTextureAccess(texture, params) |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 650 | , fGammaTextureAccess(gamma, gParams) |
| 651 | , fTextColor(textColor) |
joshualitt | 2dd1ae0 | 2014-12-03 06:24:10 -0800 | [diff] [blame] | 652 | , fFlags(flags & kLCD_DistanceFieldEffectMask){ |
jvanverth | 78f0718 | 2014-07-30 06:17:59 -0700 | [diff] [blame] | 653 | SkASSERT(!(flags & ~kLCD_DistanceFieldEffectMask) && (flags & kUseLCD_DistanceFieldEffectFlag)); |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 654 | this->initClassID<GrDistanceFieldLCDTextureEffect>(); |
joshualitt | 2dd1ae0 | 2014-12-03 06:24:10 -0800 | [diff] [blame] | 655 | fInPosition = &this->addVertexAttrib(GrAttribute("inPosition", kVec2f_GrVertexAttribType)); |
| 656 | fInTextureCoords = &this->addVertexAttrib(GrAttribute("inTextureCoords", |
| 657 | kVec2f_GrVertexAttribType)); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 658 | this->addTextureAccess(&fTextureAccess); |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 659 | this->addTextureAccess(&fGammaTextureAccess); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 660 | } |
| 661 | |
bsalomon | 0e08fc1 | 2014-10-15 08:19:04 -0700 | [diff] [blame] | 662 | bool GrDistanceFieldLCDTextureEffect::onIsEqual(const GrGeometryProcessor& other) const { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 663 | const GrDistanceFieldLCDTextureEffect& cte = other.cast<GrDistanceFieldLCDTextureEffect>(); |
bsalomon | 420d7e9 | 2014-10-16 09:18:09 -0700 | [diff] [blame] | 664 | return (fTextColor == cte.fTextColor && |
jvanverth | 78f0718 | 2014-07-30 06:17:59 -0700 | [diff] [blame] | 665 | fFlags == cte.fFlags); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 666 | } |
| 667 | |
egdaniel | 605dd0f | 2014-11-12 08:35:25 -0800 | [diff] [blame] | 668 | void GrDistanceFieldLCDTextureEffect::onComputeInvariantOutput(GrInvariantOutput* inout) const { |
egdaniel | ccb2e38 | 2014-10-13 12:53:46 -0700 | [diff] [blame] | 669 | inout->mulByUnknownColor(); |
egdaniel | 309e346 | 2014-12-09 10:35:58 -0800 | [diff] [blame] | 670 | inout->setUsingLCDCoverage(); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 671 | } |
| 672 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 673 | void GrDistanceFieldLCDTextureEffect::getGLProcessorKey(const GrBatchTracker& bt, |
| 674 | const GrGLCaps& caps, |
| 675 | GrProcessorKeyBuilder* b) const { |
| 676 | GrGLDistanceFieldLCDTextureEffect::GenKey(*this, bt, caps, b); |
| 677 | } |
| 678 | |
| 679 | GrGLGeometryProcessor* |
| 680 | GrDistanceFieldLCDTextureEffect::createGLInstance(const GrBatchTracker& bt) const { |
| 681 | return SkNEW_ARGS(GrGLDistanceFieldLCDTextureEffect, (*this, bt)); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 682 | } |
| 683 | |
| 684 | /////////////////////////////////////////////////////////////////////////////// |
| 685 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 686 | GR_DEFINE_GEOMETRY_PROCESSOR_TEST(GrDistanceFieldLCDTextureEffect); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 687 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 688 | GrGeometryProcessor* GrDistanceFieldLCDTextureEffect::TestCreate(SkRandom* random, |
| 689 | GrContext*, |
| 690 | const GrDrawTargetCaps&, |
| 691 | GrTexture* textures[]) { |
| 692 | int texIdx = random->nextBool() ? GrProcessorUnitTest::kSkiaPMTextureIdx : |
| 693 | GrProcessorUnitTest::kAlphaTextureIdx; |
| 694 | int texIdx2 = random->nextBool() ? GrProcessorUnitTest::kSkiaPMTextureIdx : |
| 695 | GrProcessorUnitTest::kAlphaTextureIdx; |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 696 | static const SkShader::TileMode kTileModes[] = { |
| 697 | SkShader::kClamp_TileMode, |
| 698 | SkShader::kRepeat_TileMode, |
| 699 | SkShader::kMirror_TileMode, |
| 700 | }; |
| 701 | SkShader::TileMode tileModes[] = { |
| 702 | kTileModes[random->nextULessThan(SK_ARRAY_COUNT(kTileModes))], |
| 703 | kTileModes[random->nextULessThan(SK_ARRAY_COUNT(kTileModes))], |
| 704 | }; |
| 705 | GrTextureParams params(tileModes, random->nextBool() ? GrTextureParams::kBilerp_FilterMode : |
| 706 | GrTextureParams::kNone_FilterMode); |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 707 | GrTextureParams params2(tileModes, random->nextBool() ? GrTextureParams::kBilerp_FilterMode : |
| 708 | GrTextureParams::kNone_FilterMode); |
| 709 | GrColor textColor = GrColorPackRGBA(random->nextULessThan(256), |
| 710 | random->nextULessThan(256), |
| 711 | random->nextULessThan(256), |
| 712 | random->nextULessThan(256)); |
jvanverth | 78f0718 | 2014-07-30 06:17:59 -0700 | [diff] [blame] | 713 | uint32_t flags = kUseLCD_DistanceFieldEffectFlag; |
| 714 | flags |= random->nextBool() ? kUniformScale_DistanceFieldEffectMask : 0; |
| 715 | flags |= random->nextBool() ? kBGR_DistanceFieldEffectFlag : 0; |
joshualitt | 2e3b3e3 | 2014-12-09 13:31:14 -0800 | [diff] [blame^] | 716 | return GrDistanceFieldLCDTextureEffect::Create(GrRandomColor(random), textures[texIdx], params, |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 717 | textures[texIdx2], params2, |
| 718 | textColor, |
jvanverth | 78f0718 | 2014-07-30 06:17:59 -0700 | [diff] [blame] | 719 | flags); |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 720 | } |