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 | |
jvanverth | 8ed3b9a | 2015-04-09 08:00:49 -0700 | [diff] [blame] | 8 | #include "GrDistanceFieldGeoProc.h" |
Jim Van Verth | 6a7a704 | 2017-09-11 11:04:10 -0400 | [diff] [blame] | 9 | #include "GrAtlasedShaderHelpers.h" |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 10 | #include "GrTexture.h" |
| 11 | #include "SkDistanceFieldGen.h" |
egdaniel | 2d721d3 | 2015-11-11 13:06:05 -0800 | [diff] [blame] | 12 | #include "glsl/GrGLSLFragmentShaderBuilder.h" |
egdaniel | e659a58 | 2015-11-13 09:55:43 -0800 | [diff] [blame] | 13 | #include "glsl/GrGLSLGeometryProcessor.h" |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 14 | #include "glsl/GrGLSLProgramDataManager.h" |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 15 | #include "glsl/GrGLSLUniformHandler.h" |
egdaniel | 64c4728 | 2015-11-13 06:54:19 -0800 | [diff] [blame] | 16 | #include "glsl/GrGLSLUtil.h" |
egdaniel | 0eafe79 | 2015-11-20 14:01:22 -0800 | [diff] [blame] | 17 | #include "glsl/GrGLSLVarying.h" |
Chris Dalton | c17bf32 | 2017-10-24 10:59:03 -0600 | [diff] [blame] | 18 | #include "glsl/GrGLSLVertexGeoBuilder.h" |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 19 | |
jvanverth | 21deace | 2015-04-01 12:43:48 -0700 | [diff] [blame] | 20 | // Assuming a radius of a little less than the diagonal of the fragment |
jvanverth | 24ba008 | 2015-03-19 11:34:13 -0700 | [diff] [blame] | 21 | #define SK_DistanceFieldAAFactor "0.65" |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 22 | |
egdaniel | e659a58 | 2015-11-13 09:55:43 -0800 | [diff] [blame] | 23 | class GrGLDistanceFieldA8TextGeoProc : public GrGLSLGeometryProcessor { |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 24 | public: |
Brian Salomon | 5c6ac64 | 2017-12-19 11:09:32 -0500 | [diff] [blame] | 25 | GrGLDistanceFieldA8TextGeoProc() = default; |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 26 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 27 | void onEmitCode(EmitArgs& args, GrGPArgs* gpArgs) override{ |
jvanverth | 502286d | 2015-04-08 12:37:51 -0700 | [diff] [blame] | 28 | const GrDistanceFieldA8TextGeoProc& dfTexEffect = |
| 29 | args.fGP.cast<GrDistanceFieldA8TextGeoProc>(); |
Chris Dalton | 6028361 | 2018-02-14 13:38:14 -0700 | [diff] [blame] | 30 | GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder; |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 31 | |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 32 | GrGLSLVertexBuilder* vertBuilder = args.fVertBuilder; |
egdaniel | 0eafe79 | 2015-11-20 14:01:22 -0800 | [diff] [blame] | 33 | GrGLSLVaryingHandler* varyingHandler = args.fVaryingHandler; |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 34 | GrGLSLUniformHandler* uniformHandler = args.fUniformHandler; |
joshualitt | abb52a1 | 2015-01-13 15:02:10 -0800 | [diff] [blame] | 35 | |
| 36 | // emit attributes |
egdaniel | 0eafe79 | 2015-11-20 14:01:22 -0800 | [diff] [blame] | 37 | varyingHandler->emitAttributes(dfTexEffect); |
joshualitt | abb52a1 | 2015-01-13 15:02:10 -0800 | [diff] [blame] | 38 | |
Robert Phillips | 8296e75 | 2017-08-25 08:45:21 -0400 | [diff] [blame] | 39 | const char* atlasSizeInvName; |
| 40 | fAtlasSizeInvUniform = uniformHandler->addUniform(kVertex_GrShaderFlag, |
Ethan Nicholas | 8aa4569 | 2017-09-20 11:24:15 -0400 | [diff] [blame] | 41 | kFloat2_GrSLType, |
Robert Phillips | 8296e75 | 2017-08-25 08:45:21 -0400 | [diff] [blame] | 42 | kHigh_GrSLPrecision, |
| 43 | "AtlasSizeInv", |
| 44 | &atlasSizeInvName); |
jvanverth | 21deace | 2015-04-01 12:43:48 -0700 | [diff] [blame] | 45 | #ifdef SK_GAMMA_APPLY_TO_A8 |
| 46 | // adjust based on gamma |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 47 | const char* distanceAdjustUniName = nullptr; |
jvanverth | 21deace | 2015-04-01 12:43:48 -0700 | [diff] [blame] | 48 | // width, height, 1/(3*width) |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 49 | fDistanceAdjustUni = uniformHandler->addUniform(kFragment_GrShaderFlag, kHalf_GrSLType, |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 50 | "DistanceAdjust", &distanceAdjustUniName); |
jvanverth | 21deace | 2015-04-01 12:43:48 -0700 | [diff] [blame] | 51 | #endif |
commit-bot@chromium.org | 6c89c34 | 2014-02-14 21:48:29 +0000 | [diff] [blame] | 52 | |
joshualitt | 9b98932 | 2014-12-15 14:16:27 -0800 | [diff] [blame] | 53 | // Setup pass through color |
Brian Salomon | bfd5183 | 2017-01-04 13:22:08 -0500 | [diff] [blame] | 54 | varyingHandler->addPassThroughAttribute(dfTexEffect.inColor(), args.fOutputColor); |
commit-bot@chromium.org | 6c89c34 | 2014-02-14 21:48:29 +0000 | [diff] [blame] | 55 | |
joshualitt | abb52a1 | 2015-01-13 15:02:10 -0800 | [diff] [blame] | 56 | // Setup position |
Brian Salomon | 5c6ac64 | 2017-12-19 11:09:32 -0500 | [diff] [blame] | 57 | gpArgs->fPositionVar = dfTexEffect.inPosition()->asShaderVar(); |
joshualitt | 2dd1ae0 | 2014-12-03 06:24:10 -0800 | [diff] [blame] | 58 | |
joshualitt | abb52a1 | 2015-01-13 15:02:10 -0800 | [diff] [blame] | 59 | // emit transforms |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 60 | this->emitTransforms(vertBuilder, |
egdaniel | 0eafe79 | 2015-11-20 14:01:22 -0800 | [diff] [blame] | 61 | varyingHandler, |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 62 | uniformHandler, |
Brian Salomon | 04460cc | 2017-12-06 14:47:42 -0500 | [diff] [blame] | 63 | dfTexEffect.inPosition()->asShaderVar(), |
Brian Salomon | 5c6ac64 | 2017-12-19 11:09:32 -0500 | [diff] [blame] | 64 | dfTexEffect.localMatrix(), |
bsalomon | a624bf3 | 2016-09-20 09:12:47 -0700 | [diff] [blame] | 65 | args.fFPCoordTransformHandler); |
joshualitt | 4973d9d | 2014-11-08 09:24:25 -0800 | [diff] [blame] | 66 | |
jvanverth | bb4a1cf | 2015-04-07 09:06:00 -0700 | [diff] [blame] | 67 | // add varyings |
Chris Dalton | 2737288 | 2017-12-08 13:34:21 -0700 | [diff] [blame] | 68 | GrGLSLVarying uv(kFloat2_GrSLType); |
Jim Van Verth | fc4f768 | 2018-01-25 16:26:25 -0500 | [diff] [blame] | 69 | GrSLType texIdxType = args.fShaderCaps->integerSupport() ? kInt_GrSLType : kFloat_GrSLType; |
| 70 | GrGLSLVarying texIdx(texIdxType); |
Chris Dalton | 2737288 | 2017-12-08 13:34:21 -0700 | [diff] [blame] | 71 | GrGLSLVarying st(kFloat2_GrSLType); |
Brian Salomon | 70132d0 | 2018-05-29 15:33:06 -0400 | [diff] [blame^] | 72 | append_index_uv_varyings(args, dfTexEffect.inTextureCoords()->name(), atlasSizeInvName, &uv, |
| 73 | &texIdx, &st); |
Robert Phillips | 8296e75 | 2017-08-25 08:45:21 -0400 | [diff] [blame] | 74 | |
jvanverth | cf371bb | 2016-03-10 11:10:43 -0800 | [diff] [blame] | 75 | bool isUniformScale = (dfTexEffect.getFlags() & kUniformScale_DistanceFieldEffectMask) == |
| 76 | kUniformScale_DistanceFieldEffectMask; |
jvanverth | bb4a1cf | 2015-04-07 09:06:00 -0700 | [diff] [blame] | 77 | bool isSimilarity = SkToBool(dfTexEffect.getFlags() & kSimilarity_DistanceFieldEffectFlag); |
brianosman | b461d34 | 2016-04-13 13:10:14 -0700 | [diff] [blame] | 78 | bool isGammaCorrect = |
| 79 | SkToBool(dfTexEffect.getFlags() & kGammaCorrect_DistanceFieldEffectFlag); |
Jim Van Verth | 90e89b3 | 2017-07-06 16:36:55 -0400 | [diff] [blame] | 80 | bool isAliased = |
| 81 | SkToBool(dfTexEffect.getFlags() & kAliased_DistanceFieldEffectFlag); |
halcanary | 9d524f2 | 2016-03-29 09:03:52 -0700 | [diff] [blame] | 82 | |
jvanverth | fdf7ccc | 2015-01-27 08:19:33 -0800 | [diff] [blame] | 83 | // Use highp to work around aliasing issues |
Ethan Nicholas | 8aa4569 | 2017-09-20 11:24:15 -0400 | [diff] [blame] | 84 | fragBuilder->codeAppendf("float2 uv = %s;\n", uv.fsIn()); |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 85 | fragBuilder->codeAppend("half4 texColor;"); |
Jim Van Verth | 6a7a704 | 2017-09-11 11:04:10 -0400 | [diff] [blame] | 86 | append_multitexture_lookup(args, dfTexEffect.numTextureSamplers(), |
| 87 | texIdx, "uv", "texColor"); |
jvanverth | fdf7ccc | 2015-01-27 08:19:33 -0800 | [diff] [blame] | 88 | |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 89 | fragBuilder->codeAppend("half distance = " |
Jim Van Verth | 6a7a704 | 2017-09-11 11:04:10 -0400 | [diff] [blame] | 90 | SK_DistanceFieldMultiplier "*(texColor.r - " SK_DistanceFieldThreshold ");"); |
jvanverth | 21deace | 2015-04-01 12:43:48 -0700 | [diff] [blame] | 91 | #ifdef SK_GAMMA_APPLY_TO_A8 |
| 92 | // adjust width based on gamma |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 93 | fragBuilder->codeAppendf("distance -= %s;", distanceAdjustUniName); |
jvanverth | 21deace | 2015-04-01 12:43:48 -0700 | [diff] [blame] | 94 | #endif |
commit-bot@chromium.org | 6c89c34 | 2014-02-14 21:48:29 +0000 | [diff] [blame] | 95 | |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 96 | fragBuilder->codeAppend("half afwidth;"); |
jvanverth | cf371bb | 2016-03-10 11:10:43 -0800 | [diff] [blame] | 97 | if (isUniformScale) { |
jvanverth | 354eba5 | 2015-03-16 11:32:49 -0700 | [diff] [blame] | 98 | // For uniform scale, we adjust for the effect of the transformation on the distance |
halcanary | 9d524f2 | 2016-03-29 09:03:52 -0700 | [diff] [blame] | 99 | // by using the length of the gradient of the t coordinate in the y direction. |
jvanverth | cf371bb | 2016-03-10 11:10:43 -0800 | [diff] [blame] | 100 | // We use st coordinates to ensure we're mapping 1:1 from texel space to pixel space. |
commit-bot@chromium.org | 6c89c34 | 2014-02-14 21:48:29 +0000 | [diff] [blame] | 101 | |
jvanverth | 354eba5 | 2015-03-16 11:32:49 -0700 | [diff] [blame] | 102 | // this gives us a smooth step across approximately one fragment |
jvanverth | e499adf | 2016-07-20 12:22:14 -0700 | [diff] [blame] | 103 | #ifdef SK_VULKAN |
| 104 | fragBuilder->codeAppendf("afwidth = abs(" SK_DistanceFieldAAFactor "*dFdx(%s.x));", |
| 105 | st.fsIn()); |
| 106 | #else |
| 107 | // We use the y gradient because there is a bug in the Mali 400 in the x direction. |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 108 | fragBuilder->codeAppendf("afwidth = abs(" SK_DistanceFieldAAFactor "*dFdy(%s.y));", |
| 109 | st.fsIn()); |
jvanverth | e499adf | 2016-07-20 12:22:14 -0700 | [diff] [blame] | 110 | #endif |
jvanverth | cf371bb | 2016-03-10 11:10:43 -0800 | [diff] [blame] | 111 | } else if (isSimilarity) { |
| 112 | // For similarity transform, we adjust the effect of the transformation on the distance |
| 113 | // by using the length of the gradient of the texture coordinates. We use st coordinates |
| 114 | // to ensure we're mapping 1:1 from texel space to pixel space. |
| 115 | // We use the y gradient because there is a bug in the Mali 400 in the x direction. |
| 116 | |
| 117 | // this gives us a smooth step across approximately one fragment |
jvanverth | e499adf | 2016-07-20 12:22:14 -0700 | [diff] [blame] | 118 | #ifdef SK_VULKAN |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 119 | fragBuilder->codeAppendf("half st_grad_len = length(dFdx(%s));", st.fsIn()); |
jvanverth | e499adf | 2016-07-20 12:22:14 -0700 | [diff] [blame] | 120 | #else |
| 121 | // We use the y gradient because there is a bug in the Mali 400 in the x direction. |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 122 | fragBuilder->codeAppendf("half st_grad_len = length(dFdy(%s));", st.fsIn()); |
jvanverth | e499adf | 2016-07-20 12:22:14 -0700 | [diff] [blame] | 123 | #endif |
jvanverth | cf371bb | 2016-03-10 11:10:43 -0800 | [diff] [blame] | 124 | fragBuilder->codeAppend("afwidth = abs(" SK_DistanceFieldAAFactor "*st_grad_len);"); |
jvanverth | 354eba5 | 2015-03-16 11:32:49 -0700 | [diff] [blame] | 125 | } else { |
| 126 | // For general transforms, to determine the amount of correction we multiply a unit |
| 127 | // vector pointing along the SDF gradient direction by the Jacobian of the st coords |
| 128 | // (which is the inverse transform for this fragment) and take the length of the result. |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 129 | fragBuilder->codeAppend("half2 dist_grad = half2(dFdx(distance), dFdy(distance));"); |
jvanverth | d68a550 | 2015-03-16 12:58:43 -0700 | [diff] [blame] | 130 | // the length of the gradient may be 0, so we need to check for this |
| 131 | // this also compensates for the Adreno, which likes to drop tiles on division by 0 |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 132 | fragBuilder->codeAppend("half dg_len2 = dot(dist_grad, dist_grad);"); |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 133 | fragBuilder->codeAppend("if (dg_len2 < 0.0001) {"); |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 134 | fragBuilder->codeAppend("dist_grad = half2(0.7071, 0.7071);"); |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 135 | fragBuilder->codeAppend("} else {"); |
| 136 | fragBuilder->codeAppend("dist_grad = dist_grad*inversesqrt(dg_len2);"); |
| 137 | fragBuilder->codeAppend("}"); |
jvanverth | d68a550 | 2015-03-16 12:58:43 -0700 | [diff] [blame] | 138 | |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 139 | fragBuilder->codeAppendf("half2 Jdx = dFdx(%s);", st.fsIn()); |
| 140 | fragBuilder->codeAppendf("half2 Jdy = dFdy(%s);", st.fsIn()); |
| 141 | fragBuilder->codeAppend("half2 grad = half2(dist_grad.x*Jdx.x + dist_grad.y*Jdy.x,"); |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 142 | fragBuilder->codeAppend(" dist_grad.x*Jdx.y + dist_grad.y*Jdy.y);"); |
commit-bot@chromium.org | 4362a38 | 2014-03-26 19:49:03 +0000 | [diff] [blame] | 143 | |
| 144 | // this gives us a smooth step across approximately one fragment |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 145 | fragBuilder->codeAppend("afwidth = " SK_DistanceFieldAAFactor "*length(grad);"); |
commit-bot@chromium.org | 4362a38 | 2014-03-26 19:49:03 +0000 | [diff] [blame] | 146 | } |
brianosman | 0586f5c | 2016-04-12 12:48:21 -0700 | [diff] [blame] | 147 | |
Jim Van Verth | 90e89b3 | 2017-07-06 16:36:55 -0400 | [diff] [blame] | 148 | if (isAliased) { |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 149 | fragBuilder->codeAppend("half val = distance > 0 ? 1.0 : 0.0;"); |
Jim Van Verth | 90e89b3 | 2017-07-06 16:36:55 -0400 | [diff] [blame] | 150 | } else if (isGammaCorrect) { |
| 151 | // The smoothstep falloff compensates for the non-linear sRGB response curve. If we are |
| 152 | // doing gamma-correct rendering (to an sRGB or F16 buffer), then we actually want |
| 153 | // distance mapped linearly to coverage, so use a linear step: |
brianosman | 0586f5c | 2016-04-12 12:48:21 -0700 | [diff] [blame] | 154 | fragBuilder->codeAppend( |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 155 | "half val = clamp((distance + afwidth) / (2.0 * afwidth), 0.0, 1.0);"); |
brianosman | 0586f5c | 2016-04-12 12:48:21 -0700 | [diff] [blame] | 156 | } else { |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 157 | fragBuilder->codeAppend("half val = smoothstep(-afwidth, afwidth, distance);"); |
brianosman | 0586f5c | 2016-04-12 12:48:21 -0700 | [diff] [blame] | 158 | } |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 159 | |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 160 | fragBuilder->codeAppendf("%s = half4(val);", args.fOutputCoverage); |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 161 | } |
| 162 | |
bsalomon | a624bf3 | 2016-09-20 09:12:47 -0700 | [diff] [blame] | 163 | void setData(const GrGLSLProgramDataManager& pdman, const GrPrimitiveProcessor& proc, |
| 164 | FPCoordTransformIter&& transformIter) override { |
Robert Phillips | 8296e75 | 2017-08-25 08:45:21 -0400 | [diff] [blame] | 165 | const GrDistanceFieldA8TextGeoProc& dfa8gp = proc.cast<GrDistanceFieldA8TextGeoProc>(); |
| 166 | |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 167 | #ifdef SK_GAMMA_APPLY_TO_A8 |
Robert Phillips | 8296e75 | 2017-08-25 08:45:21 -0400 | [diff] [blame] | 168 | float distanceAdjust = dfa8gp.getDistanceAdjust(); |
jvanverth | 21deace | 2015-04-01 12:43:48 -0700 | [diff] [blame] | 169 | if (distanceAdjust != fDistanceAdjust) { |
Robert Phillips | e253831 | 2017-08-24 17:47:23 +0000 | [diff] [blame] | 170 | fDistanceAdjust = distanceAdjust; |
Robert Phillips | 8296e75 | 2017-08-25 08:45:21 -0400 | [diff] [blame] | 171 | pdman.set1f(fDistanceAdjustUni, distanceAdjust); |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 172 | } |
| 173 | #endif |
joshualitt | 5559ca2 | 2015-05-21 15:50:36 -0700 | [diff] [blame] | 174 | |
Jim Van Verth | 6a7a704 | 2017-09-11 11:04:10 -0400 | [diff] [blame] | 175 | SkASSERT(dfa8gp.numTextureSamplers() >= 1); |
Robert Phillips | 8296e75 | 2017-08-25 08:45:21 -0400 | [diff] [blame] | 176 | GrTexture* atlas = dfa8gp.textureSampler(0).peekTexture(); |
| 177 | SkASSERT(atlas && SkIsPow2(atlas->width()) && SkIsPow2(atlas->height())); |
| 178 | |
| 179 | if (fAtlasSize.fWidth != atlas->width() || fAtlasSize.fHeight != atlas->height()) { |
| 180 | fAtlasSize.set(atlas->width(), atlas->height()); |
| 181 | pdman.set2f(fAtlasSizeInvUniform, 1.0f / atlas->width(), 1.0f / atlas->height()); |
| 182 | } |
| 183 | |
Brian Salomon | 5c6ac64 | 2017-12-19 11:09:32 -0500 | [diff] [blame] | 184 | this->setTransformDataHelper(dfa8gp.localMatrix(), pdman, &transformIter); |
commit-bot@chromium.org | 8fe2ee1 | 2014-03-26 18:03:05 +0000 | [diff] [blame] | 185 | } |
| 186 | |
robertphillips | 46d36f0 | 2015-01-18 08:14:14 -0800 | [diff] [blame] | 187 | static inline void GenKey(const GrGeometryProcessor& gp, |
Brian Salomon | 94efbf5 | 2016-11-29 13:43:05 -0500 | [diff] [blame] | 188 | const GrShaderCaps&, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 189 | GrProcessorKeyBuilder* b) { |
jvanverth | 502286d | 2015-04-08 12:37:51 -0700 | [diff] [blame] | 190 | const GrDistanceFieldA8TextGeoProc& dfTexEffect = gp.cast<GrDistanceFieldA8TextGeoProc>(); |
joshualitt | 8fc6c2d | 2014-12-22 15:27:05 -0800 | [diff] [blame] | 191 | uint32_t key = dfTexEffect.getFlags(); |
joshualitt | 8fc6c2d | 2014-12-22 15:27:05 -0800 | [diff] [blame] | 192 | b->add32(key); |
Jim Van Verth | 6a7a704 | 2017-09-11 11:04:10 -0400 | [diff] [blame] | 193 | b->add32(dfTexEffect.numTextureSamplers()); |
commit-bot@chromium.org | 4362a38 | 2014-03-26 19:49:03 +0000 | [diff] [blame] | 194 | } |
| 195 | |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 196 | private: |
mtklein | 50282b4 | 2015-01-22 07:59:52 -0800 | [diff] [blame] | 197 | #ifdef SK_GAMMA_APPLY_TO_A8 |
Brian Salomon | 5c6ac64 | 2017-12-19 11:09:32 -0500 | [diff] [blame] | 198 | float fDistanceAdjust = -1.f; |
jvanverth | 21deace | 2015-04-01 12:43:48 -0700 | [diff] [blame] | 199 | UniformHandle fDistanceAdjustUni; |
mtklein | 50282b4 | 2015-01-22 07:59:52 -0800 | [diff] [blame] | 200 | #endif |
Brian Salomon | 5c6ac64 | 2017-12-19 11:09:32 -0500 | [diff] [blame] | 201 | SkISize fAtlasSize = {0, 0}; |
Robert Phillips | 8296e75 | 2017-08-25 08:45:21 -0400 | [diff] [blame] | 202 | UniformHandle fAtlasSizeInvUniform; |
commit-bot@chromium.org | 6c89c34 | 2014-02-14 21:48:29 +0000 | [diff] [blame] | 203 | |
egdaniel | e659a58 | 2015-11-13 09:55:43 -0800 | [diff] [blame] | 204 | typedef GrGLSLGeometryProcessor INHERITED; |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 205 | }; |
| 206 | |
| 207 | /////////////////////////////////////////////////////////////////////////////// |
| 208 | |
Jim Van Verth | a950b63 | 2017-09-12 11:54:11 -0400 | [diff] [blame] | 209 | GrDistanceFieldA8TextGeoProc::GrDistanceFieldA8TextGeoProc( |
Robert Phillips | 4bc7011 | 2018-03-01 10:24:02 -0500 | [diff] [blame] | 210 | const sk_sp<GrTextureProxy>* proxies, |
| 211 | int numProxies, |
Brian Salomon | 5c6ac64 | 2017-12-19 11:09:32 -0500 | [diff] [blame] | 212 | const GrSamplerState& params, |
Robert Phillips | dbc8eeb | 2017-02-21 10:04:31 -0500 | [diff] [blame] | 213 | #ifdef SK_GAMMA_APPLY_TO_A8 |
Brian Salomon | 5c6ac64 | 2017-12-19 11:09:32 -0500 | [diff] [blame] | 214 | float distanceAdjust, |
Robert Phillips | dbc8eeb | 2017-02-21 10:04:31 -0500 | [diff] [blame] | 215 | #endif |
Brian Salomon | 5c6ac64 | 2017-12-19 11:09:32 -0500 | [diff] [blame] | 216 | uint32_t flags, |
| 217 | const SkMatrix& localMatrix) |
Ethan Nicholas | abff956 | 2017-10-09 10:54:08 -0400 | [diff] [blame] | 218 | : INHERITED(kGrDistanceFieldA8TextGeoProc_ClassID) |
Robert Phillips | dbc8eeb | 2017-02-21 10:04:31 -0500 | [diff] [blame] | 219 | #ifdef SK_GAMMA_APPLY_TO_A8 |
Brian Salomon | 2bbdcc4 | 2017-09-07 12:36:34 -0400 | [diff] [blame] | 220 | , fDistanceAdjust(distanceAdjust) |
Robert Phillips | dbc8eeb | 2017-02-21 10:04:31 -0500 | [diff] [blame] | 221 | #endif |
Brian Salomon | 2bbdcc4 | 2017-09-07 12:36:34 -0400 | [diff] [blame] | 222 | , fFlags(flags & kNonLCD_DistanceFieldEffectMask) |
| 223 | , fInColor(nullptr) |
Brian Salomon | 5c6ac64 | 2017-12-19 11:09:32 -0500 | [diff] [blame] | 224 | , fLocalMatrix(localMatrix) { |
Robert Phillips | 4bc7011 | 2018-03-01 10:24:02 -0500 | [diff] [blame] | 225 | SkASSERT(numProxies <= kMaxTextures); |
| 226 | |
Robert Phillips | dbc8eeb | 2017-02-21 10:04:31 -0500 | [diff] [blame] | 227 | SkASSERT(!(flags & ~kNonLCD_DistanceFieldEffectMask)); |
Brian Salomon | 5c6ac64 | 2017-12-19 11:09:32 -0500 | [diff] [blame] | 228 | if (flags & kPerspective_DistanceFieldEffectFlag) { |
| 229 | fInPosition = &this->addVertexAttrib("inPosition", kFloat3_GrVertexAttribType); |
| 230 | } else { |
| 231 | fInPosition = &this->addVertexAttrib("inPosition", kFloat2_GrVertexAttribType); |
| 232 | } |
Ethan Nicholas | fa7ee24 | 2017-09-25 09:52:04 -0400 | [diff] [blame] | 233 | fInColor = &this->addVertexAttrib("inColor", kUByte4_norm_GrVertexAttribType); |
| 234 | fInTextureCoords = &this->addVertexAttrib("inTextureCoords", kUShort2_GrVertexAttribType); |
Robert Phillips | 4bc7011 | 2018-03-01 10:24:02 -0500 | [diff] [blame] | 235 | for (int i = 0; i < numProxies; ++i) { |
| 236 | SkASSERT(proxies[i]); |
| 237 | |
| 238 | fTextureSamplers[i].reset(std::move(proxies[i]), params); |
| 239 | this->addTextureSampler(&fTextureSamplers[i]); |
Jim Van Verth | a950b63 | 2017-09-12 11:54:11 -0400 | [diff] [blame] | 240 | } |
Robert Phillips | dbc8eeb | 2017-02-21 10:04:31 -0500 | [diff] [blame] | 241 | } |
| 242 | |
Robert Phillips | 4bc7011 | 2018-03-01 10:24:02 -0500 | [diff] [blame] | 243 | void GrDistanceFieldA8TextGeoProc::addNewProxies(const sk_sp<GrTextureProxy>* proxies, |
| 244 | int numProxies, |
Jim Van Verth | eafa64b | 2017-09-18 10:05:00 -0400 | [diff] [blame] | 245 | const GrSamplerState& params) { |
Robert Phillips | 4bc7011 | 2018-03-01 10:24:02 -0500 | [diff] [blame] | 246 | SkASSERT(numProxies <= kMaxTextures); |
| 247 | |
| 248 | for (int i = 0; i < numProxies; ++i) { |
| 249 | SkASSERT(proxies[i]); |
| 250 | |
| 251 | if (!fTextureSamplers[i].isInitialized()) { |
Jim Van Verth | eafa64b | 2017-09-18 10:05:00 -0400 | [diff] [blame] | 252 | fTextureSamplers[i].reset(std::move(proxies[i]), params); |
| 253 | this->addTextureSampler(&fTextureSamplers[i]); |
| 254 | } |
| 255 | } |
| 256 | } |
| 257 | |
Brian Salomon | 94efbf5 | 2016-11-29 13:43:05 -0500 | [diff] [blame] | 258 | void GrDistanceFieldA8TextGeoProc::getGLSLProcessorKey(const GrShaderCaps& caps, |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 259 | GrProcessorKeyBuilder* b) const { |
joshualitt | 465283c | 2015-09-11 08:19:35 -0700 | [diff] [blame] | 260 | GrGLDistanceFieldA8TextGeoProc::GenKey(*this, caps, b); |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 261 | } |
| 262 | |
Brian Salomon | 94efbf5 | 2016-11-29 13:43:05 -0500 | [diff] [blame] | 263 | GrGLSLPrimitiveProcessor* |
| 264 | GrDistanceFieldA8TextGeoProc::createGLSLInstance(const GrShaderCaps&) const { |
joshualitt | 465283c | 2015-09-11 08:19:35 -0700 | [diff] [blame] | 265 | return new GrGLDistanceFieldA8TextGeoProc(); |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 266 | } |
| 267 | |
| 268 | /////////////////////////////////////////////////////////////////////////////// |
| 269 | |
jvanverth | 502286d | 2015-04-08 12:37:51 -0700 | [diff] [blame] | 270 | GR_DEFINE_GEOMETRY_PROCESSOR_TEST(GrDistanceFieldA8TextGeoProc); |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 271 | |
Hal Canary | 6f6961e | 2017-01-31 13:50:44 -0500 | [diff] [blame] | 272 | #if GR_TEST_UTILS |
bungeman | 06ca8ec | 2016-06-09 08:01:03 -0700 | [diff] [blame] | 273 | sk_sp<GrGeometryProcessor> GrDistanceFieldA8TextGeoProc::TestCreate(GrProcessorTestData* d) { |
Robert Phillips | dbc8eeb | 2017-02-21 10:04:31 -0500 | [diff] [blame] | 274 | int texIdx = d->fRandom->nextBool() ? GrProcessorUnitTest::kSkiaPMTextureIdx |
| 275 | : GrProcessorUnitTest::kAlphaTextureIdx; |
Jim Van Verth | a950b63 | 2017-09-12 11:54:11 -0400 | [diff] [blame] | 276 | sk_sp<GrTextureProxy> proxies[kMaxTextures] = { |
| 277 | d->textureProxy(texIdx), |
| 278 | nullptr, |
| 279 | nullptr, |
| 280 | nullptr |
| 281 | }; |
Robert Phillips | dbc8eeb | 2017-02-21 10:04:31 -0500 | [diff] [blame] | 282 | |
Brian Salomon | 2bbdcc4 | 2017-09-07 12:36:34 -0400 | [diff] [blame] | 283 | GrSamplerState::WrapMode wrapModes[2]; |
| 284 | GrTest::TestWrapModes(d->fRandom, wrapModes); |
| 285 | GrSamplerState samplerState(wrapModes, d->fRandom->nextBool() |
| 286 | ? GrSamplerState::Filter::kBilerp |
| 287 | : GrSamplerState::Filter::kNearest); |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 288 | |
jvanverth | cf371bb | 2016-03-10 11:10:43 -0800 | [diff] [blame] | 289 | uint32_t flags = 0; |
| 290 | flags |= d->fRandom->nextBool() ? kSimilarity_DistanceFieldEffectFlag : 0; |
| 291 | if (flags & kSimilarity_DistanceFieldEffectFlag) { |
| 292 | flags |= d->fRandom->nextBool() ? kScaleOnly_DistanceFieldEffectFlag : 0; |
| 293 | } |
Brian Salomon | 5c6ac64 | 2017-12-19 11:09:32 -0500 | [diff] [blame] | 294 | SkMatrix localMatrix = GrTest::TestMatrix(d->fRandom); |
Mike Reed | e1367b4 | 2017-12-15 14:28:56 -0500 | [diff] [blame] | 295 | #ifdef SK_GAMMA_APPLY_TO_A8 |
Brian Salomon | 5c6ac64 | 2017-12-19 11:09:32 -0500 | [diff] [blame] | 296 | float lum = d->fRandom->nextF(); |
Mike Reed | e1367b4 | 2017-12-15 14:28:56 -0500 | [diff] [blame] | 297 | #endif |
Robert Phillips | 4bc7011 | 2018-03-01 10:24:02 -0500 | [diff] [blame] | 298 | return GrDistanceFieldA8TextGeoProc::Make(proxies, 1, |
Brian Salomon | 2bbdcc4 | 2017-09-07 12:36:34 -0400 | [diff] [blame] | 299 | samplerState, |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 300 | #ifdef SK_GAMMA_APPLY_TO_A8 |
Brian Salomon | 5c6ac64 | 2017-12-19 11:09:32 -0500 | [diff] [blame] | 301 | lum, |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 302 | #endif |
Brian Salomon | 5c6ac64 | 2017-12-19 11:09:32 -0500 | [diff] [blame] | 303 | flags, localMatrix); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 304 | } |
Hal Canary | 6f6961e | 2017-01-31 13:50:44 -0500 | [diff] [blame] | 305 | #endif |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 306 | |
| 307 | /////////////////////////////////////////////////////////////////////////////// |
| 308 | |
egdaniel | e659a58 | 2015-11-13 09:55:43 -0800 | [diff] [blame] | 309 | class GrGLDistanceFieldPathGeoProc : public GrGLSLGeometryProcessor { |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 310 | public: |
joshualitt | 465283c | 2015-09-11 08:19:35 -0700 | [diff] [blame] | 311 | GrGLDistanceFieldPathGeoProc() |
Jim Van Verth | 5698c8a | 2017-10-12 10:18:44 -0400 | [diff] [blame] | 312 | : fMatrix(SkMatrix::InvalidMatrix()) |
Robert Phillips | 8296e75 | 2017-08-25 08:45:21 -0400 | [diff] [blame] | 313 | , fAtlasSize({0,0}) { |
| 314 | } |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 315 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 316 | void onEmitCode(EmitArgs& args, GrGPArgs* gpArgs) override{ |
Brian Salomon | 5c6ac64 | 2017-12-19 11:09:32 -0500 | [diff] [blame] | 317 | const GrDistanceFieldPathGeoProc& dfPathEffect = |
| 318 | args.fGP.cast<GrDistanceFieldPathGeoProc>(); |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 319 | |
Chris Dalton | 6028361 | 2018-02-14 13:38:14 -0700 | [diff] [blame] | 320 | GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder; |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 321 | |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 322 | GrGLSLVertexBuilder* vertBuilder = args.fVertBuilder; |
egdaniel | 0eafe79 | 2015-11-20 14:01:22 -0800 | [diff] [blame] | 323 | GrGLSLVaryingHandler* varyingHandler = args.fVaryingHandler; |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 324 | GrGLSLUniformHandler* uniformHandler = args.fUniformHandler; |
joshualitt | abb52a1 | 2015-01-13 15:02:10 -0800 | [diff] [blame] | 325 | |
| 326 | // emit attributes |
Brian Salomon | 5c6ac64 | 2017-12-19 11:09:32 -0500 | [diff] [blame] | 327 | varyingHandler->emitAttributes(dfPathEffect); |
joshualitt | abb52a1 | 2015-01-13 15:02:10 -0800 | [diff] [blame] | 328 | |
Robert Phillips | 8296e75 | 2017-08-25 08:45:21 -0400 | [diff] [blame] | 329 | const char* atlasSizeInvName; |
| 330 | fAtlasSizeInvUniform = uniformHandler->addUniform(kVertex_GrShaderFlag, |
Ethan Nicholas | 8aa4569 | 2017-09-20 11:24:15 -0400 | [diff] [blame] | 331 | kFloat2_GrSLType, |
Robert Phillips | 8296e75 | 2017-08-25 08:45:21 -0400 | [diff] [blame] | 332 | kHigh_GrSLPrecision, |
| 333 | "AtlasSizeInv", |
| 334 | &atlasSizeInvName); |
| 335 | |
Chris Dalton | 2737288 | 2017-12-08 13:34:21 -0700 | [diff] [blame] | 336 | GrGLSLVarying uv(kFloat2_GrSLType); |
Jim Van Verth | fc4f768 | 2018-01-25 16:26:25 -0500 | [diff] [blame] | 337 | GrSLType texIdxType = args.fShaderCaps->integerSupport() ? kInt_GrSLType : kFloat_GrSLType; |
| 338 | GrGLSLVarying texIdx(texIdxType); |
Chris Dalton | 2737288 | 2017-12-08 13:34:21 -0700 | [diff] [blame] | 339 | GrGLSLVarying st(kFloat2_GrSLType); |
Brian Salomon | 70132d0 | 2018-05-29 15:33:06 -0400 | [diff] [blame^] | 340 | append_index_uv_varyings(args, dfPathEffect.inTextureCoords()->name(), atlasSizeInvName, |
| 341 | &uv, &texIdx, &st); |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 342 | |
joshualitt | 9b98932 | 2014-12-15 14:16:27 -0800 | [diff] [blame] | 343 | // setup pass through color |
Brian Salomon | 5c6ac64 | 2017-12-19 11:09:32 -0500 | [diff] [blame] | 344 | varyingHandler->addPassThroughAttribute(dfPathEffect.inColor(), args.fOutputColor); |
reed | e4ef1ca | 2015-02-17 18:38:38 -0800 | [diff] [blame] | 345 | |
Brian Salomon | 5c6ac64 | 2017-12-19 11:09:32 -0500 | [diff] [blame] | 346 | if (dfPathEffect.matrix().hasPerspective()) { |
Jim Van Verth | 5698c8a | 2017-10-12 10:18:44 -0400 | [diff] [blame] | 347 | // Setup position |
| 348 | this->writeOutputPosition(vertBuilder, |
| 349 | uniformHandler, |
| 350 | gpArgs, |
Brian Salomon | 70132d0 | 2018-05-29 15:33:06 -0400 | [diff] [blame^] | 351 | dfPathEffect.inPosition()->name(), |
Brian Salomon | 5c6ac64 | 2017-12-19 11:09:32 -0500 | [diff] [blame] | 352 | dfPathEffect.matrix(), |
Jim Van Verth | 5698c8a | 2017-10-12 10:18:44 -0400 | [diff] [blame] | 353 | &fMatrixUniform); |
joshualitt | abb52a1 | 2015-01-13 15:02:10 -0800 | [diff] [blame] | 354 | |
Jim Van Verth | 5698c8a | 2017-10-12 10:18:44 -0400 | [diff] [blame] | 355 | // emit transforms |
| 356 | this->emitTransforms(vertBuilder, |
| 357 | varyingHandler, |
| 358 | uniformHandler, |
Brian Salomon | 5c6ac64 | 2017-12-19 11:09:32 -0500 | [diff] [blame] | 359 | dfPathEffect.inPosition()->asShaderVar(), |
Jim Van Verth | 5698c8a | 2017-10-12 10:18:44 -0400 | [diff] [blame] | 360 | args.fFPCoordTransformHandler); |
| 361 | } else { |
| 362 | // Setup position |
Brian Salomon | 70132d0 | 2018-05-29 15:33:06 -0400 | [diff] [blame^] | 363 | this->writeOutputPosition(vertBuilder, gpArgs, dfPathEffect.inPosition()->name()); |
Jim Van Verth | 5698c8a | 2017-10-12 10:18:44 -0400 | [diff] [blame] | 364 | |
| 365 | // emit transforms |
| 366 | this->emitTransforms(vertBuilder, |
| 367 | varyingHandler, |
| 368 | uniformHandler, |
Brian Salomon | 5c6ac64 | 2017-12-19 11:09:32 -0500 | [diff] [blame] | 369 | dfPathEffect.inPosition()->asShaderVar(), |
| 370 | dfPathEffect.matrix(), |
Jim Van Verth | 5698c8a | 2017-10-12 10:18:44 -0400 | [diff] [blame] | 371 | args.fFPCoordTransformHandler); |
| 372 | } |
joshualitt | 4973d9d | 2014-11-08 09:24:25 -0800 | [diff] [blame] | 373 | |
jvanverth | fdf7ccc | 2015-01-27 08:19:33 -0800 | [diff] [blame] | 374 | // Use highp to work around aliasing issues |
Ethan Nicholas | 8aa4569 | 2017-09-20 11:24:15 -0400 | [diff] [blame] | 375 | fragBuilder->codeAppendf("float2 uv = %s;", uv.fsIn()); |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 376 | fragBuilder->codeAppend("half4 texColor;"); |
Brian Salomon | 5c6ac64 | 2017-12-19 11:09:32 -0500 | [diff] [blame] | 377 | append_multitexture_lookup(args, dfPathEffect.numTextureSamplers(), texIdx, "uv", |
| 378 | "texColor"); |
jvanverth | fdf7ccc | 2015-01-27 08:19:33 -0800 | [diff] [blame] | 379 | |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 380 | fragBuilder->codeAppend("half distance = " |
Jim Van Verth | 6a7a704 | 2017-09-11 11:04:10 -0400 | [diff] [blame] | 381 | SK_DistanceFieldMultiplier "*(texColor.r - " SK_DistanceFieldThreshold ");"); |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 382 | |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 383 | fragBuilder->codeAppend("half afwidth;"); |
Brian Salomon | 5c6ac64 | 2017-12-19 11:09:32 -0500 | [diff] [blame] | 384 | bool isUniformScale = (dfPathEffect.getFlags() & kUniformScale_DistanceFieldEffectMask) == |
| 385 | kUniformScale_DistanceFieldEffectMask; |
| 386 | bool isSimilarity = SkToBool(dfPathEffect.getFlags() & kSimilarity_DistanceFieldEffectFlag); |
brianosman | 0e3c554 | 2016-04-13 13:56:21 -0700 | [diff] [blame] | 387 | bool isGammaCorrect = |
Brian Salomon | 5c6ac64 | 2017-12-19 11:09:32 -0500 | [diff] [blame] | 388 | SkToBool(dfPathEffect.getFlags() & kGammaCorrect_DistanceFieldEffectFlag); |
jvanverth | cf371bb | 2016-03-10 11:10:43 -0800 | [diff] [blame] | 389 | if (isUniformScale) { |
jvanverth | 354eba5 | 2015-03-16 11:32:49 -0700 | [diff] [blame] | 390 | // For uniform scale, we adjust for the effect of the transformation on the distance |
halcanary | 9d524f2 | 2016-03-29 09:03:52 -0700 | [diff] [blame] | 391 | // by using the length of the gradient of the t coordinate in the y direction. |
jvanverth | cf371bb | 2016-03-10 11:10:43 -0800 | [diff] [blame] | 392 | // We use st coordinates to ensure we're mapping 1:1 from texel space to pixel space. |
jvanverth | 354eba5 | 2015-03-16 11:32:49 -0700 | [diff] [blame] | 393 | |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 394 | // this gives us a smooth step across approximately one fragment |
jvanverth | e499adf | 2016-07-20 12:22:14 -0700 | [diff] [blame] | 395 | #ifdef SK_VULKAN |
Robert Phillips | 8296e75 | 2017-08-25 08:45:21 -0400 | [diff] [blame] | 396 | fragBuilder->codeAppendf("afwidth = abs(" SK_DistanceFieldAAFactor "*dFdx(%s.x));", |
| 397 | st.fsIn()); |
jvanverth | e499adf | 2016-07-20 12:22:14 -0700 | [diff] [blame] | 398 | #else |
| 399 | // We use the y gradient because there is a bug in the Mali 400 in the x direction. |
Robert Phillips | 8296e75 | 2017-08-25 08:45:21 -0400 | [diff] [blame] | 400 | fragBuilder->codeAppendf("afwidth = abs(" SK_DistanceFieldAAFactor "*dFdy(%s.y));", |
| 401 | st.fsIn()); |
jvanverth | e499adf | 2016-07-20 12:22:14 -0700 | [diff] [blame] | 402 | #endif |
jvanverth | cf371bb | 2016-03-10 11:10:43 -0800 | [diff] [blame] | 403 | } else if (isSimilarity) { |
| 404 | // For similarity transform, we adjust the effect of the transformation on the distance |
| 405 | // by using the length of the gradient of the texture coordinates. We use st coordinates |
| 406 | // to ensure we're mapping 1:1 from texel space to pixel space. |
jvanverth | cf371bb | 2016-03-10 11:10:43 -0800 | [diff] [blame] | 407 | |
| 408 | // this gives us a smooth step across approximately one fragment |
jvanverth | e499adf | 2016-07-20 12:22:14 -0700 | [diff] [blame] | 409 | #ifdef SK_VULKAN |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 410 | fragBuilder->codeAppendf("half st_grad_len = length(dFdx(%s));", st.fsIn()); |
jvanverth | e499adf | 2016-07-20 12:22:14 -0700 | [diff] [blame] | 411 | #else |
| 412 | // We use the y gradient because there is a bug in the Mali 400 in the x direction. |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 413 | fragBuilder->codeAppendf("half st_grad_len = length(dFdy(%s));", st.fsIn()); |
jvanverth | e499adf | 2016-07-20 12:22:14 -0700 | [diff] [blame] | 414 | #endif |
jvanverth | cf371bb | 2016-03-10 11:10:43 -0800 | [diff] [blame] | 415 | fragBuilder->codeAppend("afwidth = abs(" SK_DistanceFieldAAFactor "*st_grad_len);"); |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 416 | } else { |
jvanverth | 354eba5 | 2015-03-16 11:32:49 -0700 | [diff] [blame] | 417 | // For general transforms, to determine the amount of correction we multiply a unit |
| 418 | // vector pointing along the SDF gradient direction by the Jacobian of the st coords |
| 419 | // (which is the inverse transform for this fragment) and take the length of the result. |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 420 | fragBuilder->codeAppend("half2 dist_grad = half2(dFdx(distance), dFdy(distance));"); |
jvanverth | d68a550 | 2015-03-16 12:58:43 -0700 | [diff] [blame] | 421 | // the length of the gradient may be 0, so we need to check for this |
| 422 | // this also compensates for the Adreno, which likes to drop tiles on division by 0 |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 423 | fragBuilder->codeAppend("half dg_len2 = dot(dist_grad, dist_grad);"); |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 424 | fragBuilder->codeAppend("if (dg_len2 < 0.0001) {"); |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 425 | fragBuilder->codeAppend("dist_grad = half2(0.7071, 0.7071);"); |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 426 | fragBuilder->codeAppend("} else {"); |
| 427 | fragBuilder->codeAppend("dist_grad = dist_grad*inversesqrt(dg_len2);"); |
| 428 | fragBuilder->codeAppend("}"); |
jvanverth | d68a550 | 2015-03-16 12:58:43 -0700 | [diff] [blame] | 429 | |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 430 | fragBuilder->codeAppendf("half2 Jdx = dFdx(%s);", st.fsIn()); |
| 431 | fragBuilder->codeAppendf("half2 Jdy = dFdy(%s);", st.fsIn()); |
| 432 | fragBuilder->codeAppend("half2 grad = half2(dist_grad.x*Jdx.x + dist_grad.y*Jdy.x,"); |
| 433 | fragBuilder->codeAppend(" dist_grad.x*Jdx.y + dist_grad.y*Jdy.y);"); |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 434 | |
| 435 | // this gives us a smooth step across approximately one fragment |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 436 | fragBuilder->codeAppend("afwidth = " SK_DistanceFieldAAFactor "*length(grad);"); |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 437 | } |
brianosman | 0e3c554 | 2016-04-13 13:56:21 -0700 | [diff] [blame] | 438 | // The smoothstep falloff compensates for the non-linear sRGB response curve. If we are |
| 439 | // doing gamma-correct rendering (to an sRGB or F16 buffer), then we actually want distance |
| 440 | // mapped linearly to coverage, so use a linear step: |
| 441 | if (isGammaCorrect) { |
| 442 | fragBuilder->codeAppend( |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 443 | "half val = clamp((distance + afwidth) / (2.0 * afwidth), 0.0, 1.0);"); |
brianosman | 0e3c554 | 2016-04-13 13:56:21 -0700 | [diff] [blame] | 444 | } else { |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 445 | fragBuilder->codeAppend("half val = smoothstep(-afwidth, afwidth, distance);"); |
brianosman | 0e3c554 | 2016-04-13 13:56:21 -0700 | [diff] [blame] | 446 | } |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 447 | |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 448 | fragBuilder->codeAppendf("%s = half4(val);", args.fOutputCoverage); |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 449 | } |
| 450 | |
bsalomon | a624bf3 | 2016-09-20 09:12:47 -0700 | [diff] [blame] | 451 | void setData(const GrGLSLProgramDataManager& pdman, const GrPrimitiveProcessor& proc, |
| 452 | FPCoordTransformIter&& transformIter) override { |
joshualitt | 9b98932 | 2014-12-15 14:16:27 -0800 | [diff] [blame] | 453 | |
joshualitt | e578a95 | 2015-05-14 10:09:13 -0700 | [diff] [blame] | 454 | const GrDistanceFieldPathGeoProc& dfpgp = proc.cast<GrDistanceFieldPathGeoProc>(); |
joshualitt | 5559ca2 | 2015-05-21 15:50:36 -0700 | [diff] [blame] | 455 | |
Jim Van Verth | 5698c8a | 2017-10-12 10:18:44 -0400 | [diff] [blame] | 456 | if (dfpgp.matrix().hasPerspective() && !fMatrix.cheapEqualTo(dfpgp.matrix())) { |
| 457 | fMatrix = dfpgp.matrix(); |
| 458 | float matrix[3 * 3]; |
| 459 | GrGLSLGetMatrix<3>(matrix, fMatrix); |
| 460 | pdman.setMatrix3f(fMatrixUniform, matrix); |
joshualitt | 5559ca2 | 2015-05-21 15:50:36 -0700 | [diff] [blame] | 461 | } |
Robert Phillips | 8296e75 | 2017-08-25 08:45:21 -0400 | [diff] [blame] | 462 | |
Jim Van Verth | 6a7a704 | 2017-09-11 11:04:10 -0400 | [diff] [blame] | 463 | SkASSERT(dfpgp.numTextureSamplers() >= 1); |
Robert Phillips | 8296e75 | 2017-08-25 08:45:21 -0400 | [diff] [blame] | 464 | GrTexture* atlas = dfpgp.textureSampler(0).peekTexture(); |
| 465 | SkASSERT(atlas && SkIsPow2(atlas->width()) && SkIsPow2(atlas->height())); |
| 466 | |
| 467 | if (fAtlasSize.fWidth != atlas->width() || fAtlasSize.fHeight != atlas->height()) { |
| 468 | fAtlasSize.set(atlas->width(), atlas->height()); |
| 469 | pdman.set2f(fAtlasSizeInvUniform, 1.0f / atlas->width(), 1.0f / atlas->height()); |
| 470 | } |
| 471 | |
Jim Van Verth | 5698c8a | 2017-10-12 10:18:44 -0400 | [diff] [blame] | 472 | if (dfpgp.matrix().hasPerspective()) { |
| 473 | this->setTransformDataHelper(SkMatrix::I(), pdman, &transformIter); |
| 474 | } else { |
| 475 | this->setTransformDataHelper(dfpgp.matrix(), pdman, &transformIter); |
| 476 | } |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 477 | } |
| 478 | |
robertphillips | 46d36f0 | 2015-01-18 08:14:14 -0800 | [diff] [blame] | 479 | static inline void GenKey(const GrGeometryProcessor& gp, |
Brian Salomon | 94efbf5 | 2016-11-29 13:43:05 -0500 | [diff] [blame] | 480 | const GrShaderCaps&, |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 481 | GrProcessorKeyBuilder* b) { |
jvanverth | 502286d | 2015-04-08 12:37:51 -0700 | [diff] [blame] | 482 | const GrDistanceFieldPathGeoProc& dfTexEffect = gp.cast<GrDistanceFieldPathGeoProc>(); |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 483 | |
joshualitt | 8fc6c2d | 2014-12-22 15:27:05 -0800 | [diff] [blame] | 484 | uint32_t key = dfTexEffect.getFlags(); |
Jim Van Verth | 5698c8a | 2017-10-12 10:18:44 -0400 | [diff] [blame] | 485 | key |= ComputePosKey(dfTexEffect.matrix()) << 16; |
joshualitt | 8fc6c2d | 2014-12-22 15:27:05 -0800 | [diff] [blame] | 486 | b->add32(key); |
Jim Van Verth | 5698c8a | 2017-10-12 10:18:44 -0400 | [diff] [blame] | 487 | b->add32(dfTexEffect.matrix().hasPerspective()); |
Jim Van Verth | 6a7a704 | 2017-09-11 11:04:10 -0400 | [diff] [blame] | 488 | b->add32(dfTexEffect.numTextureSamplers()); |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 489 | } |
| 490 | |
| 491 | private: |
Jim Van Verth | 5698c8a | 2017-10-12 10:18:44 -0400 | [diff] [blame] | 492 | SkMatrix fMatrix; // view matrix if perspective, local matrix otherwise |
| 493 | UniformHandle fMatrixUniform; |
Robert Phillips | 8296e75 | 2017-08-25 08:45:21 -0400 | [diff] [blame] | 494 | |
| 495 | SkISize fAtlasSize; |
| 496 | UniformHandle fAtlasSizeInvUniform; |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 497 | |
egdaniel | e659a58 | 2015-11-13 09:55:43 -0800 | [diff] [blame] | 498 | typedef GrGLSLGeometryProcessor INHERITED; |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 499 | }; |
| 500 | |
| 501 | /////////////////////////////////////////////////////////////////////////////// |
Jim Van Verth | a950b63 | 2017-09-12 11:54:11 -0400 | [diff] [blame] | 502 | GrDistanceFieldPathGeoProc::GrDistanceFieldPathGeoProc( |
Jim Van Verth | 5698c8a | 2017-10-12 10:18:44 -0400 | [diff] [blame] | 503 | const SkMatrix& matrix, |
Robert Phillips | 4bc7011 | 2018-03-01 10:24:02 -0500 | [diff] [blame] | 504 | const sk_sp<GrTextureProxy>* proxies, |
| 505 | int numProxies, |
Jim Van Verth | a950b63 | 2017-09-12 11:54:11 -0400 | [diff] [blame] | 506 | const GrSamplerState& params, |
Jim Van Verth | 5698c8a | 2017-10-12 10:18:44 -0400 | [diff] [blame] | 507 | uint32_t flags) |
Ethan Nicholas | abff956 | 2017-10-09 10:54:08 -0400 | [diff] [blame] | 508 | : INHERITED(kGrDistanceFieldPathGeoProc_ClassID) |
Jim Van Verth | 5698c8a | 2017-10-12 10:18:44 -0400 | [diff] [blame] | 509 | , fMatrix(matrix) |
Robert Phillips | fbcef6e | 2017-06-15 12:07:18 -0400 | [diff] [blame] | 510 | , fFlags(flags & kNonLCD_DistanceFieldEffectMask) |
Jim Van Verth | 5698c8a | 2017-10-12 10:18:44 -0400 | [diff] [blame] | 511 | , fInColor(nullptr) { |
Robert Phillips | 4bc7011 | 2018-03-01 10:24:02 -0500 | [diff] [blame] | 512 | SkASSERT(numProxies <= kMaxTextures); |
| 513 | |
Robert Phillips | dbc8eeb | 2017-02-21 10:04:31 -0500 | [diff] [blame] | 514 | SkASSERT(!(flags & ~kNonLCD_DistanceFieldEffectMask)); |
Ethan Nicholas | fa7ee24 | 2017-09-25 09:52:04 -0400 | [diff] [blame] | 515 | fInPosition = &this->addVertexAttrib("inPosition", kFloat2_GrVertexAttribType); |
| 516 | fInColor = &this->addVertexAttrib("inColor", kUByte4_norm_GrVertexAttribType); |
| 517 | fInTextureCoords = &this->addVertexAttrib("inTextureCoords", kUShort2_GrVertexAttribType); |
Robert Phillips | 4bc7011 | 2018-03-01 10:24:02 -0500 | [diff] [blame] | 518 | for (int i = 0; i < numProxies; ++i) { |
| 519 | SkASSERT(proxies[i]); |
| 520 | |
| 521 | fTextureSamplers[i].reset(std::move(proxies[i]), params); |
| 522 | this->addTextureSampler(&fTextureSamplers[i]); |
Jim Van Verth | a950b63 | 2017-09-12 11:54:11 -0400 | [diff] [blame] | 523 | } |
Robert Phillips | dbc8eeb | 2017-02-21 10:04:31 -0500 | [diff] [blame] | 524 | } |
| 525 | |
Robert Phillips | 4bc7011 | 2018-03-01 10:24:02 -0500 | [diff] [blame] | 526 | void GrDistanceFieldPathGeoProc::addNewProxies(const sk_sp<GrTextureProxy>* proxies, |
| 527 | int numProxies, |
Jim Van Verth | eafa64b | 2017-09-18 10:05:00 -0400 | [diff] [blame] | 528 | const GrSamplerState& params) { |
Robert Phillips | 4bc7011 | 2018-03-01 10:24:02 -0500 | [diff] [blame] | 529 | SkASSERT(numProxies <= kMaxTextures); |
| 530 | |
| 531 | for (int i = 0; i < numProxies; ++i) { |
| 532 | SkASSERT(proxies[i]); |
| 533 | |
| 534 | if (!fTextureSamplers[i].isInitialized()) { |
Jim Van Verth | eafa64b | 2017-09-18 10:05:00 -0400 | [diff] [blame] | 535 | fTextureSamplers[i].reset(std::move(proxies[i]), params); |
| 536 | this->addTextureSampler(&fTextureSamplers[i]); |
| 537 | } |
| 538 | } |
| 539 | } |
| 540 | |
Brian Salomon | 94efbf5 | 2016-11-29 13:43:05 -0500 | [diff] [blame] | 541 | void GrDistanceFieldPathGeoProc::getGLSLProcessorKey(const GrShaderCaps& caps, |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 542 | GrProcessorKeyBuilder* b) const { |
joshualitt | 465283c | 2015-09-11 08:19:35 -0700 | [diff] [blame] | 543 | GrGLDistanceFieldPathGeoProc::GenKey(*this, caps, b); |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 544 | } |
| 545 | |
Brian Salomon | 94efbf5 | 2016-11-29 13:43:05 -0500 | [diff] [blame] | 546 | GrGLSLPrimitiveProcessor* |
| 547 | GrDistanceFieldPathGeoProc::createGLSLInstance(const GrShaderCaps&) const { |
joshualitt | 465283c | 2015-09-11 08:19:35 -0700 | [diff] [blame] | 548 | return new GrGLDistanceFieldPathGeoProc(); |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 549 | } |
| 550 | |
| 551 | /////////////////////////////////////////////////////////////////////////////// |
| 552 | |
jvanverth | 502286d | 2015-04-08 12:37:51 -0700 | [diff] [blame] | 553 | GR_DEFINE_GEOMETRY_PROCESSOR_TEST(GrDistanceFieldPathGeoProc); |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 554 | |
Hal Canary | 6f6961e | 2017-01-31 13:50:44 -0500 | [diff] [blame] | 555 | #if GR_TEST_UTILS |
bungeman | 06ca8ec | 2016-06-09 08:01:03 -0700 | [diff] [blame] | 556 | sk_sp<GrGeometryProcessor> GrDistanceFieldPathGeoProc::TestCreate(GrProcessorTestData* d) { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 557 | int texIdx = d->fRandom->nextBool() ? GrProcessorUnitTest::kSkiaPMTextureIdx |
| 558 | : GrProcessorUnitTest::kAlphaTextureIdx; |
Jim Van Verth | a950b63 | 2017-09-12 11:54:11 -0400 | [diff] [blame] | 559 | sk_sp<GrTextureProxy> proxies[kMaxTextures] = { |
| 560 | d->textureProxy(texIdx), |
| 561 | nullptr, |
| 562 | nullptr, |
| 563 | nullptr |
| 564 | }; |
Robert Phillips | dbc8eeb | 2017-02-21 10:04:31 -0500 | [diff] [blame] | 565 | |
Brian Salomon | 2bbdcc4 | 2017-09-07 12:36:34 -0400 | [diff] [blame] | 566 | GrSamplerState::WrapMode wrapModes[2]; |
| 567 | GrTest::TestWrapModes(d->fRandom, wrapModes); |
| 568 | GrSamplerState samplerState(wrapModes, d->fRandom->nextBool() |
| 569 | ? GrSamplerState::Filter::kBilerp |
| 570 | : GrSamplerState::Filter::kNearest); |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 571 | |
jvanverth | cf371bb | 2016-03-10 11:10:43 -0800 | [diff] [blame] | 572 | uint32_t flags = 0; |
| 573 | flags |= d->fRandom->nextBool() ? kSimilarity_DistanceFieldEffectFlag : 0; |
| 574 | if (flags & kSimilarity_DistanceFieldEffectFlag) { |
| 575 | flags |= d->fRandom->nextBool() ? kScaleOnly_DistanceFieldEffectFlag : 0; |
| 576 | } |
| 577 | |
Brian Osman | 0906825 | 2018-01-03 09:57:29 -0500 | [diff] [blame] | 578 | return GrDistanceFieldPathGeoProc::Make(GrTest::TestMatrix(d->fRandom), |
Robert Phillips | 4bc7011 | 2018-03-01 10:24:02 -0500 | [diff] [blame] | 579 | proxies, 1, |
Brian Salomon | 2bbdcc4 | 2017-09-07 12:36:34 -0400 | [diff] [blame] | 580 | samplerState, |
Jim Van Verth | 5698c8a | 2017-10-12 10:18:44 -0400 | [diff] [blame] | 581 | flags); |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 582 | } |
Hal Canary | 6f6961e | 2017-01-31 13:50:44 -0500 | [diff] [blame] | 583 | #endif |
jvanverth | fa38a30 | 2014-10-06 05:59:05 -0700 | [diff] [blame] | 584 | |
| 585 | /////////////////////////////////////////////////////////////////////////////// |
| 586 | |
egdaniel | e659a58 | 2015-11-13 09:55:43 -0800 | [diff] [blame] | 587 | class GrGLDistanceFieldLCDTextGeoProc : public GrGLSLGeometryProcessor { |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 588 | public: |
Brian Salomon | 5c6ac64 | 2017-12-19 11:09:32 -0500 | [diff] [blame] | 589 | GrGLDistanceFieldLCDTextGeoProc() : fAtlasSize({0, 0}) { |
jvanverth | 502286d | 2015-04-08 12:37:51 -0700 | [diff] [blame] | 590 | fDistanceAdjust = GrDistanceFieldLCDTextGeoProc::DistanceAdjust::Make(1.0f, 1.0f, 1.0f); |
jvanverth | 21deace | 2015-04-01 12:43:48 -0700 | [diff] [blame] | 591 | } |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 592 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 593 | void onEmitCode(EmitArgs& args, GrGPArgs* gpArgs) override{ |
jvanverth | 502286d | 2015-04-08 12:37:51 -0700 | [diff] [blame] | 594 | const GrDistanceFieldLCDTextGeoProc& dfTexEffect = |
| 595 | args.fGP.cast<GrDistanceFieldLCDTextGeoProc>(); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 596 | |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 597 | GrGLSLVertexBuilder* vertBuilder = args.fVertBuilder; |
egdaniel | 0eafe79 | 2015-11-20 14:01:22 -0800 | [diff] [blame] | 598 | GrGLSLVaryingHandler* varyingHandler = args.fVaryingHandler; |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 599 | GrGLSLUniformHandler* uniformHandler = args.fUniformHandler; |
joshualitt | abb52a1 | 2015-01-13 15:02:10 -0800 | [diff] [blame] | 600 | |
| 601 | // emit attributes |
egdaniel | 0eafe79 | 2015-11-20 14:01:22 -0800 | [diff] [blame] | 602 | varyingHandler->emitAttributes(dfTexEffect); |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 603 | |
Robert Phillips | 8296e75 | 2017-08-25 08:45:21 -0400 | [diff] [blame] | 604 | const char* atlasSizeInvName; |
| 605 | fAtlasSizeInvUniform = uniformHandler->addUniform(kVertex_GrShaderFlag, |
Ethan Nicholas | 8aa4569 | 2017-09-20 11:24:15 -0400 | [diff] [blame] | 606 | kFloat2_GrSLType, |
Robert Phillips | 8296e75 | 2017-08-25 08:45:21 -0400 | [diff] [blame] | 607 | kHigh_GrSLPrecision, |
| 608 | "AtlasSizeInv", |
| 609 | &atlasSizeInvName); |
| 610 | |
Chris Dalton | 6028361 | 2018-02-14 13:38:14 -0700 | [diff] [blame] | 611 | GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder; |
joshualitt | abb52a1 | 2015-01-13 15:02:10 -0800 | [diff] [blame] | 612 | |
joshualitt | 9b98932 | 2014-12-15 14:16:27 -0800 | [diff] [blame] | 613 | // setup pass through color |
Brian Salomon | bfd5183 | 2017-01-04 13:22:08 -0500 | [diff] [blame] | 614 | varyingHandler->addPassThroughAttribute(dfTexEffect.inColor(), args.fOutputColor); |
joshualitt | 9b98932 | 2014-12-15 14:16:27 -0800 | [diff] [blame] | 615 | |
joshualitt | abb52a1 | 2015-01-13 15:02:10 -0800 | [diff] [blame] | 616 | // Setup position |
Brian Salomon | 5c6ac64 | 2017-12-19 11:09:32 -0500 | [diff] [blame] | 617 | gpArgs->fPositionVar = dfTexEffect.inPosition()->asShaderVar(); |
joshualitt | 4973d9d | 2014-11-08 09:24:25 -0800 | [diff] [blame] | 618 | |
joshualitt | abb52a1 | 2015-01-13 15:02:10 -0800 | [diff] [blame] | 619 | // emit transforms |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 620 | this->emitTransforms(vertBuilder, |
egdaniel | 0eafe79 | 2015-11-20 14:01:22 -0800 | [diff] [blame] | 621 | varyingHandler, |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 622 | uniformHandler, |
Brian Salomon | 04460cc | 2017-12-06 14:47:42 -0500 | [diff] [blame] | 623 | dfTexEffect.inPosition()->asShaderVar(), |
Brian Salomon | 5c6ac64 | 2017-12-19 11:09:32 -0500 | [diff] [blame] | 624 | dfTexEffect.localMatrix(), |
bsalomon | a624bf3 | 2016-09-20 09:12:47 -0700 | [diff] [blame] | 625 | args.fFPCoordTransformHandler); |
joshualitt | abb52a1 | 2015-01-13 15:02:10 -0800 | [diff] [blame] | 626 | |
jvanverth | bb4a1cf | 2015-04-07 09:06:00 -0700 | [diff] [blame] | 627 | // set up varyings |
Chris Dalton | 2737288 | 2017-12-08 13:34:21 -0700 | [diff] [blame] | 628 | GrGLSLVarying uv(kFloat2_GrSLType); |
Jim Van Verth | fc4f768 | 2018-01-25 16:26:25 -0500 | [diff] [blame] | 629 | GrSLType texIdxType = args.fShaderCaps->integerSupport() ? kInt_GrSLType : kFloat_GrSLType; |
| 630 | GrGLSLVarying texIdx(texIdxType); |
Chris Dalton | 2737288 | 2017-12-08 13:34:21 -0700 | [diff] [blame] | 631 | GrGLSLVarying st(kFloat2_GrSLType); |
Brian Salomon | 70132d0 | 2018-05-29 15:33:06 -0400 | [diff] [blame^] | 632 | append_index_uv_varyings(args, dfTexEffect.inTextureCoords()->name(), atlasSizeInvName, &uv, |
| 633 | &texIdx, &st); |
Robert Phillips | 8296e75 | 2017-08-25 08:45:21 -0400 | [diff] [blame] | 634 | |
Chris Dalton | 2737288 | 2017-12-08 13:34:21 -0700 | [diff] [blame] | 635 | GrGLSLVarying delta(kFloat_GrSLType); |
Chris Dalton | fdde34e | 2017-10-16 14:15:26 -0600 | [diff] [blame] | 636 | varyingHandler->addVarying("Delta", &delta); |
Robert Phillips | 8296e75 | 2017-08-25 08:45:21 -0400 | [diff] [blame] | 637 | if (dfTexEffect.getFlags() & kBGR_DistanceFieldEffectFlag) { |
| 638 | vertBuilder->codeAppendf("%s = -%s.x/3.0;", delta.vsOut(), atlasSizeInvName); |
| 639 | } else { |
| 640 | vertBuilder->codeAppendf("%s = %s.x/3.0;", delta.vsOut(), atlasSizeInvName); |
| 641 | } |
| 642 | |
| 643 | // add frag shader code |
jvanverth | cf371bb | 2016-03-10 11:10:43 -0800 | [diff] [blame] | 644 | bool isUniformScale = (dfTexEffect.getFlags() & kUniformScale_DistanceFieldEffectMask) == |
| 645 | kUniformScale_DistanceFieldEffectMask; |
| 646 | bool isSimilarity = SkToBool(dfTexEffect.getFlags() & kSimilarity_DistanceFieldEffectFlag); |
brianosman | b461d34 | 2016-04-13 13:10:14 -0700 | [diff] [blame] | 647 | bool isGammaCorrect = |
| 648 | SkToBool(dfTexEffect.getFlags() & kGammaCorrect_DistanceFieldEffectFlag); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 649 | |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 650 | // create LCD offset adjusted by inverse of transform |
jvanverth | fdf7ccc | 2015-01-27 08:19:33 -0800 | [diff] [blame] | 651 | // Use highp to work around aliasing issues |
Ethan Nicholas | 8aa4569 | 2017-09-20 11:24:15 -0400 | [diff] [blame] | 652 | fragBuilder->codeAppendf("float2 uv = %s;\n", uv.fsIn()); |
joshualitt | 922c8b1 | 2015-08-07 09:55:23 -0700 | [diff] [blame] | 653 | |
jvanverth | 78f0718 | 2014-07-30 06:17:59 -0700 | [diff] [blame] | 654 | if (isUniformScale) { |
jvanverth | e499adf | 2016-07-20 12:22:14 -0700 | [diff] [blame] | 655 | #ifdef SK_VULKAN |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 656 | fragBuilder->codeAppendf("half st_grad_len = abs(dFdx(%s.x));", st.fsIn()); |
jvanverth | e499adf | 2016-07-20 12:22:14 -0700 | [diff] [blame] | 657 | #else |
| 658 | // We use the y gradient because there is a bug in the Mali 400 in the x direction. |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 659 | fragBuilder->codeAppendf("half st_grad_len = abs(dFdy(%s.y));", st.fsIn()); |
jvanverth | e499adf | 2016-07-20 12:22:14 -0700 | [diff] [blame] | 660 | #endif |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 661 | fragBuilder->codeAppendf("half2 offset = half2(st_grad_len*%s, 0.0);", delta.fsIn()); |
jvanverth | cf371bb | 2016-03-10 11:10:43 -0800 | [diff] [blame] | 662 | } else if (isSimilarity) { |
| 663 | // For a similarity matrix with rotation, the gradient will not be aligned |
| 664 | // with the texel coordinate axes, so we need to calculate it. |
jvanverth | e499adf | 2016-07-20 12:22:14 -0700 | [diff] [blame] | 665 | #ifdef SK_VULKAN |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 666 | fragBuilder->codeAppendf("half2 st_grad = dFdx(%s);", st.fsIn()); |
| 667 | fragBuilder->codeAppendf("half2 offset = %s*st_grad;", delta.fsIn()); |
jvanverth | e499adf | 2016-07-20 12:22:14 -0700 | [diff] [blame] | 668 | #else |
jvanverth | cf371bb | 2016-03-10 11:10:43 -0800 | [diff] [blame] | 669 | // We use dFdy because of a Mali 400 bug, and rotate -90 degrees to |
| 670 | // get the gradient in the x direction. |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 671 | fragBuilder->codeAppendf("half2 st_grad = dFdy(%s);", st.fsIn()); |
| 672 | fragBuilder->codeAppendf("half2 offset = %s*half2(st_grad.y, -st_grad.x);", |
Robert Phillips | 8296e75 | 2017-08-25 08:45:21 -0400 | [diff] [blame] | 673 | delta.fsIn()); |
jvanverth | e499adf | 2016-07-20 12:22:14 -0700 | [diff] [blame] | 674 | #endif |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 675 | fragBuilder->codeAppend("half st_grad_len = length(st_grad);"); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 676 | } else { |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 677 | fragBuilder->codeAppendf("half2 st = %s;\n", st.fsIn()); |
jvanverth | bb4a1cf | 2015-04-07 09:06:00 -0700 | [diff] [blame] | 678 | |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 679 | fragBuilder->codeAppend("half2 Jdx = dFdx(st);"); |
| 680 | fragBuilder->codeAppend("half2 Jdy = dFdy(st);"); |
| 681 | fragBuilder->codeAppendf("half2 offset = %s*Jdx;", delta.fsIn()); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 682 | } |
| 683 | |
Jim Van Verth | 6a7a704 | 2017-09-11 11:04:10 -0400 | [diff] [blame] | 684 | // sample the texture by index |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 685 | fragBuilder->codeAppend("half4 texColor;"); |
Jim Van Verth | 6a7a704 | 2017-09-11 11:04:10 -0400 | [diff] [blame] | 686 | append_multitexture_lookup(args, dfTexEffect.numTextureSamplers(), |
| 687 | texIdx, "uv", "texColor"); |
Jim Van Verth | 6c251d2 | 2017-09-08 12:29:07 -0400 | [diff] [blame] | 688 | |
Jim Van Verth | 6a7a704 | 2017-09-11 11:04:10 -0400 | [diff] [blame] | 689 | // green is distance to uv center |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 690 | fragBuilder->codeAppend("half3 distance;"); |
Jim Van Verth | 6a7a704 | 2017-09-11 11:04:10 -0400 | [diff] [blame] | 691 | fragBuilder->codeAppend("distance.y = texColor.r;"); |
| 692 | // red is distance to left offset |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 693 | fragBuilder->codeAppend("half2 uv_adjusted = uv - offset;"); |
Jim Van Verth | 6a7a704 | 2017-09-11 11:04:10 -0400 | [diff] [blame] | 694 | append_multitexture_lookup(args, dfTexEffect.numTextureSamplers(), |
| 695 | texIdx, "uv_adjusted", "texColor"); |
| 696 | fragBuilder->codeAppend("distance.x = texColor.r;"); |
| 697 | // blue is distance to right offset |
| 698 | fragBuilder->codeAppend("uv_adjusted = uv + offset;"); |
| 699 | append_multitexture_lookup(args, dfTexEffect.numTextureSamplers(), |
| 700 | texIdx, "uv_adjusted", "texColor"); |
| 701 | fragBuilder->codeAppend("distance.z = texColor.r;"); |
| 702 | |
| 703 | fragBuilder->codeAppend("distance = " |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 704 | "half3(" SK_DistanceFieldMultiplier ")*(distance - half3(" SK_DistanceFieldThreshold"));"); |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 705 | |
jvanverth | 21deace | 2015-04-01 12:43:48 -0700 | [diff] [blame] | 706 | // adjust width based on gamma |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 707 | const char* distanceAdjustUniName = nullptr; |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 708 | fDistanceAdjustUni = uniformHandler->addUniform(kFragment_GrShaderFlag, kHalf3_GrSLType, |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 709 | "DistanceAdjust", &distanceAdjustUniName); |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 710 | fragBuilder->codeAppendf("distance -= %s;", distanceAdjustUniName); |
jvanverth | 21deace | 2015-04-01 12:43:48 -0700 | [diff] [blame] | 711 | |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 712 | // To be strictly correct, we should compute the anti-aliasing factor separately |
| 713 | // for each color component. However, this is only important when using perspective |
| 714 | // transformations, and even then using a single factor seems like a reasonable |
| 715 | // trade-off between quality and speed. |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 716 | fragBuilder->codeAppend("half afwidth;"); |
jvanverth | cf371bb | 2016-03-10 11:10:43 -0800 | [diff] [blame] | 717 | if (isSimilarity) { |
halcanary | 9d524f2 | 2016-03-29 09:03:52 -0700 | [diff] [blame] | 718 | // For similarity transform (uniform scale-only is a subset of this), we adjust for the |
| 719 | // effect of the transformation on the distance by using the length of the gradient of |
jvanverth | cf371bb | 2016-03-10 11:10:43 -0800 | [diff] [blame] | 720 | // the texture coordinates. We use st coordinates to ensure we're mapping 1:1 from texel |
| 721 | // space to pixel space. |
jvanverth | 354eba5 | 2015-03-16 11:32:49 -0700 | [diff] [blame] | 722 | |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 723 | // this gives us a smooth step across approximately one fragment |
jvanverth | cf371bb | 2016-03-10 11:10:43 -0800 | [diff] [blame] | 724 | fragBuilder->codeAppend("afwidth = " SK_DistanceFieldAAFactor "*st_grad_len;"); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 725 | } else { |
jvanverth | 354eba5 | 2015-03-16 11:32:49 -0700 | [diff] [blame] | 726 | // For general transforms, to determine the amount of correction we multiply a unit |
| 727 | // vector pointing along the SDF gradient direction by the Jacobian of the st coords |
| 728 | // (which is the inverse transform for this fragment) and take the length of the result. |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 729 | fragBuilder->codeAppend("half2 dist_grad = half2(dFdx(distance.r), dFdy(distance.r));"); |
jvanverth | d68a550 | 2015-03-16 12:58:43 -0700 | [diff] [blame] | 730 | // the length of the gradient may be 0, so we need to check for this |
| 731 | // this also compensates for the Adreno, which likes to drop tiles on division by 0 |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 732 | fragBuilder->codeAppend("half dg_len2 = dot(dist_grad, dist_grad);"); |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 733 | fragBuilder->codeAppend("if (dg_len2 < 0.0001) {"); |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 734 | fragBuilder->codeAppend("dist_grad = half2(0.7071, 0.7071);"); |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 735 | fragBuilder->codeAppend("} else {"); |
| 736 | fragBuilder->codeAppend("dist_grad = dist_grad*inversesqrt(dg_len2);"); |
| 737 | fragBuilder->codeAppend("}"); |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 738 | fragBuilder->codeAppend("half2 grad = half2(dist_grad.x*Jdx.x + dist_grad.y*Jdy.x,"); |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 739 | fragBuilder->codeAppend(" dist_grad.x*Jdx.y + dist_grad.y*Jdy.y);"); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 740 | |
| 741 | // this gives us a smooth step across approximately one fragment |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 742 | fragBuilder->codeAppend("afwidth = " SK_DistanceFieldAAFactor "*length(grad);"); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 743 | } |
| 744 | |
brianosman | 0586f5c | 2016-04-12 12:48:21 -0700 | [diff] [blame] | 745 | // The smoothstep falloff compensates for the non-linear sRGB response curve. If we are |
| 746 | // doing gamma-correct rendering (to an sRGB or F16 buffer), then we actually want distance |
| 747 | // mapped linearly to coverage, so use a linear step: |
brianosman | b461d34 | 2016-04-13 13:10:14 -0700 | [diff] [blame] | 748 | if (isGammaCorrect) { |
Greg Daniel | 5592382 | 2017-05-22 16:34:34 -0400 | [diff] [blame] | 749 | fragBuilder->codeAppendf("%s = " |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 750 | "half4(clamp((distance + half3(afwidth)) / half3(2.0 * afwidth), 0.0, 1.0), 1.0);", |
Greg Daniel | 5592382 | 2017-05-22 16:34:34 -0400 | [diff] [blame] | 751 | args.fOutputCoverage); |
brianosman | 0586f5c | 2016-04-12 12:48:21 -0700 | [diff] [blame] | 752 | } else { |
Greg Daniel | 5592382 | 2017-05-22 16:34:34 -0400 | [diff] [blame] | 753 | fragBuilder->codeAppendf( |
Ethan Nicholas | f7b8820 | 2017-09-18 14:10:39 -0400 | [diff] [blame] | 754 | "%s = half4(smoothstep(half3(-afwidth), half3(afwidth), distance), 1.0);", |
Greg Daniel | 5592382 | 2017-05-22 16:34:34 -0400 | [diff] [blame] | 755 | args.fOutputCoverage); |
brianosman | 0586f5c | 2016-04-12 12:48:21 -0700 | [diff] [blame] | 756 | } |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 757 | } |
| 758 | |
bsalomon | a624bf3 | 2016-09-20 09:12:47 -0700 | [diff] [blame] | 759 | void setData(const GrGLSLProgramDataManager& pdman, const GrPrimitiveProcessor& processor, |
| 760 | FPCoordTransformIter&& transformIter) override { |
jvanverth | 21deace | 2015-04-01 12:43:48 -0700 | [diff] [blame] | 761 | SkASSERT(fDistanceAdjustUni.isValid()); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 762 | |
joshualitt | 5559ca2 | 2015-05-21 15:50:36 -0700 | [diff] [blame] | 763 | const GrDistanceFieldLCDTextGeoProc& dflcd = processor.cast<GrDistanceFieldLCDTextGeoProc>(); |
| 764 | GrDistanceFieldLCDTextGeoProc::DistanceAdjust wa = dflcd.getDistanceAdjust(); |
jvanverth | 21deace | 2015-04-01 12:43:48 -0700 | [diff] [blame] | 765 | if (wa != fDistanceAdjust) { |
| 766 | pdman.set3f(fDistanceAdjustUni, |
| 767 | wa.fR, |
| 768 | wa.fG, |
| 769 | wa.fB); |
| 770 | fDistanceAdjust = wa; |
jvanverth | 2d2a68c | 2014-06-10 06:42:56 -0700 | [diff] [blame] | 771 | } |
joshualitt | 9b98932 | 2014-12-15 14:16:27 -0800 | [diff] [blame] | 772 | |
Jim Van Verth | 6a7a704 | 2017-09-11 11:04:10 -0400 | [diff] [blame] | 773 | SkASSERT(dflcd.numTextureSamplers() >= 1); |
Robert Phillips | 8296e75 | 2017-08-25 08:45:21 -0400 | [diff] [blame] | 774 | GrTexture* atlas = dflcd.textureSampler(0).peekTexture(); |
| 775 | SkASSERT(atlas && SkIsPow2(atlas->width()) && SkIsPow2(atlas->height())); |
| 776 | |
| 777 | if (fAtlasSize.fWidth != atlas->width() || fAtlasSize.fHeight != atlas->height()) { |
| 778 | fAtlasSize.set(atlas->width(), atlas->height()); |
| 779 | pdman.set2f(fAtlasSizeInvUniform, 1.0f / atlas->width(), 1.0f / atlas->height()); |
| 780 | } |
Brian Salomon | 5c6ac64 | 2017-12-19 11:09:32 -0500 | [diff] [blame] | 781 | this->setTransformDataHelper(dflcd.localMatrix(), pdman, &transformIter); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 782 | } |
| 783 | |
robertphillips | 46d36f0 | 2015-01-18 08:14:14 -0800 | [diff] [blame] | 784 | static inline void GenKey(const GrGeometryProcessor& gp, |
Brian Salomon | 94efbf5 | 2016-11-29 13:43:05 -0500 | [diff] [blame] | 785 | const GrShaderCaps&, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 786 | GrProcessorKeyBuilder* b) { |
jvanverth | 502286d | 2015-04-08 12:37:51 -0700 | [diff] [blame] | 787 | const GrDistanceFieldLCDTextGeoProc& dfTexEffect = gp.cast<GrDistanceFieldLCDTextGeoProc>(); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 788 | |
joshualitt | 8fc6c2d | 2014-12-22 15:27:05 -0800 | [diff] [blame] | 789 | uint32_t key = dfTexEffect.getFlags(); |
joshualitt | 8fc6c2d | 2014-12-22 15:27:05 -0800 | [diff] [blame] | 790 | b->add32(key); |
Jim Van Verth | 6a7a704 | 2017-09-11 11:04:10 -0400 | [diff] [blame] | 791 | b->add32(dfTexEffect.numTextureSamplers()); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 792 | } |
| 793 | |
| 794 | private: |
jvanverth | 502286d | 2015-04-08 12:37:51 -0700 | [diff] [blame] | 795 | GrDistanceFieldLCDTextGeoProc::DistanceAdjust fDistanceAdjust; |
Robert Phillips | 8296e75 | 2017-08-25 08:45:21 -0400 | [diff] [blame] | 796 | UniformHandle fDistanceAdjustUni; |
| 797 | |
| 798 | SkISize fAtlasSize; |
| 799 | UniformHandle fAtlasSizeInvUniform; |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 800 | |
egdaniel | e659a58 | 2015-11-13 09:55:43 -0800 | [diff] [blame] | 801 | typedef GrGLSLGeometryProcessor INHERITED; |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 802 | }; |
| 803 | |
| 804 | /////////////////////////////////////////////////////////////////////////////// |
Jim Van Verth | a950b63 | 2017-09-12 11:54:11 -0400 | [diff] [blame] | 805 | GrDistanceFieldLCDTextGeoProc::GrDistanceFieldLCDTextGeoProc( |
Robert Phillips | 4bc7011 | 2018-03-01 10:24:02 -0500 | [diff] [blame] | 806 | const sk_sp<GrTextureProxy>* proxies, |
| 807 | int numProxies, |
Jim Van Verth | a950b63 | 2017-09-12 11:54:11 -0400 | [diff] [blame] | 808 | const GrSamplerState& params, |
| 809 | DistanceAdjust distanceAdjust, |
Brian Salomon | 5c6ac64 | 2017-12-19 11:09:32 -0500 | [diff] [blame] | 810 | uint32_t flags, |
| 811 | const SkMatrix& localMatrix) |
Ethan Nicholas | abff956 | 2017-10-09 10:54:08 -0400 | [diff] [blame] | 812 | : INHERITED(kGrDistanceFieldLCDTextGeoProc_ClassID) |
Brian Salomon | 2bbdcc4 | 2017-09-07 12:36:34 -0400 | [diff] [blame] | 813 | , fDistanceAdjust(distanceAdjust) |
| 814 | , fFlags(flags & kLCD_DistanceFieldEffectMask) |
Brian Salomon | 5c6ac64 | 2017-12-19 11:09:32 -0500 | [diff] [blame] | 815 | , fLocalMatrix(localMatrix) { |
Robert Phillips | 4bc7011 | 2018-03-01 10:24:02 -0500 | [diff] [blame] | 816 | SkASSERT(numProxies <= kMaxTextures); |
| 817 | |
Robert Phillips | dbc8eeb | 2017-02-21 10:04:31 -0500 | [diff] [blame] | 818 | SkASSERT(!(flags & ~kLCD_DistanceFieldEffectMask) && (flags & kUseLCD_DistanceFieldEffectFlag)); |
Brian Salomon | 5c6ac64 | 2017-12-19 11:09:32 -0500 | [diff] [blame] | 819 | if (fFlags & kPerspective_DistanceFieldEffectFlag) { |
| 820 | fInPosition = &this->addVertexAttrib("inPosition", kFloat3_GrVertexAttribType); |
| 821 | } else { |
| 822 | fInPosition = &this->addVertexAttrib("inPosition", kFloat2_GrVertexAttribType); |
| 823 | } |
Ethan Nicholas | fa7ee24 | 2017-09-25 09:52:04 -0400 | [diff] [blame] | 824 | fInColor = &this->addVertexAttrib("inColor", kUByte4_norm_GrVertexAttribType); |
| 825 | fInTextureCoords = &this->addVertexAttrib("inTextureCoords", kUShort2_GrVertexAttribType); |
Robert Phillips | 4bc7011 | 2018-03-01 10:24:02 -0500 | [diff] [blame] | 826 | for (int i = 0; i < numProxies; ++i) { |
| 827 | SkASSERT(proxies[i]); |
| 828 | |
| 829 | fTextureSamplers[i].reset(std::move(proxies[i]), params); |
| 830 | this->addTextureSampler(&fTextureSamplers[i]); |
Jim Van Verth | a950b63 | 2017-09-12 11:54:11 -0400 | [diff] [blame] | 831 | } |
Robert Phillips | dbc8eeb | 2017-02-21 10:04:31 -0500 | [diff] [blame] | 832 | } |
| 833 | |
Robert Phillips | 4bc7011 | 2018-03-01 10:24:02 -0500 | [diff] [blame] | 834 | void GrDistanceFieldLCDTextGeoProc::addNewProxies(const sk_sp<GrTextureProxy>* proxies, |
| 835 | int numProxies, |
Jim Van Verth | eafa64b | 2017-09-18 10:05:00 -0400 | [diff] [blame] | 836 | const GrSamplerState& params) { |
Robert Phillips | 4bc7011 | 2018-03-01 10:24:02 -0500 | [diff] [blame] | 837 | SkASSERT(numProxies <= kMaxTextures); |
| 838 | |
| 839 | for (int i = 0; i < numProxies; ++i) { |
| 840 | SkASSERT(proxies[i]); |
| 841 | |
| 842 | if (!fTextureSamplers[i].isInitialized()) { |
| 843 | fTextureSamplers[i].reset(std::move(proxies[i]), params); |
Jim Van Verth | eafa64b | 2017-09-18 10:05:00 -0400 | [diff] [blame] | 844 | this->addTextureSampler(&fTextureSamplers[i]); |
| 845 | } |
| 846 | } |
| 847 | } |
| 848 | |
Brian Salomon | 94efbf5 | 2016-11-29 13:43:05 -0500 | [diff] [blame] | 849 | void GrDistanceFieldLCDTextGeoProc::getGLSLProcessorKey(const GrShaderCaps& caps, |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 850 | GrProcessorKeyBuilder* b) const { |
joshualitt | 465283c | 2015-09-11 08:19:35 -0700 | [diff] [blame] | 851 | GrGLDistanceFieldLCDTextGeoProc::GenKey(*this, caps, b); |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 852 | } |
| 853 | |
Brian Salomon | 94efbf5 | 2016-11-29 13:43:05 -0500 | [diff] [blame] | 854 | GrGLSLPrimitiveProcessor* GrDistanceFieldLCDTextGeoProc::createGLSLInstance(const GrShaderCaps&) const { |
joshualitt | 465283c | 2015-09-11 08:19:35 -0700 | [diff] [blame] | 855 | return new GrGLDistanceFieldLCDTextGeoProc(); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 856 | } |
| 857 | |
| 858 | /////////////////////////////////////////////////////////////////////////////// |
| 859 | |
jvanverth | 502286d | 2015-04-08 12:37:51 -0700 | [diff] [blame] | 860 | GR_DEFINE_GEOMETRY_PROCESSOR_TEST(GrDistanceFieldLCDTextGeoProc); |
commit-bot@chromium.org | 609ced4 | 2014-04-03 18:25:48 +0000 | [diff] [blame] | 861 | |
Hal Canary | 6f6961e | 2017-01-31 13:50:44 -0500 | [diff] [blame] | 862 | #if GR_TEST_UTILS |
bungeman | 06ca8ec | 2016-06-09 08:01:03 -0700 | [diff] [blame] | 863 | sk_sp<GrGeometryProcessor> GrDistanceFieldLCDTextGeoProc::TestCreate(GrProcessorTestData* d) { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 864 | int texIdx = d->fRandom->nextBool() ? GrProcessorUnitTest::kSkiaPMTextureIdx : |
| 865 | GrProcessorUnitTest::kAlphaTextureIdx; |
Jim Van Verth | a950b63 | 2017-09-12 11:54:11 -0400 | [diff] [blame] | 866 | sk_sp<GrTextureProxy> proxies[kMaxTextures] = { |
| 867 | d->textureProxy(texIdx), |
| 868 | nullptr, |
| 869 | nullptr, |
| 870 | nullptr |
| 871 | }; |
Robert Phillips | dbc8eeb | 2017-02-21 10:04:31 -0500 | [diff] [blame] | 872 | |
Brian Salomon | 2bbdcc4 | 2017-09-07 12:36:34 -0400 | [diff] [blame] | 873 | GrSamplerState::WrapMode wrapModes[2]; |
| 874 | GrTest::TestWrapModes(d->fRandom, wrapModes); |
| 875 | GrSamplerState samplerState(wrapModes, d->fRandom->nextBool() |
| 876 | ? GrSamplerState::Filter::kBilerp |
| 877 | : GrSamplerState::Filter::kNearest); |
jvanverth | 21deace | 2015-04-01 12:43:48 -0700 | [diff] [blame] | 878 | DistanceAdjust wa = { 0.0f, 0.1f, -0.1f }; |
jvanverth | 78f0718 | 2014-07-30 06:17:59 -0700 | [diff] [blame] | 879 | uint32_t flags = kUseLCD_DistanceFieldEffectFlag; |
jvanverth | cf371bb | 2016-03-10 11:10:43 -0800 | [diff] [blame] | 880 | flags |= d->fRandom->nextBool() ? kSimilarity_DistanceFieldEffectFlag : 0; |
| 881 | if (flags & kSimilarity_DistanceFieldEffectFlag) { |
| 882 | flags |= d->fRandom->nextBool() ? kScaleOnly_DistanceFieldEffectFlag : 0; |
| 883 | } |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 884 | flags |= d->fRandom->nextBool() ? kBGR_DistanceFieldEffectFlag : 0; |
Brian Salomon | 5c6ac64 | 2017-12-19 11:09:32 -0500 | [diff] [blame] | 885 | SkMatrix localMatrix = GrTest::TestMatrix(d->fRandom); |
Robert Phillips | 4bc7011 | 2018-03-01 10:24:02 -0500 | [diff] [blame] | 886 | return GrDistanceFieldLCDTextGeoProc::Make(proxies, 1, samplerState, wa, flags, localMatrix); |
jvanverth@google.com | d830d13 | 2013-11-11 20:54:09 +0000 | [diff] [blame] | 887 | } |
Hal Canary | 6f6961e | 2017-01-31 13:50:44 -0500 | [diff] [blame] | 888 | #endif |