commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +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 | #ifndef GrBezierEffect_DEFINED |
skia.committer@gmail.com | 44a77c8 | 2013-08-23 07:01:29 +0000 | [diff] [blame] | 9 | #define GrBezierEffect_DEFINED |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 10 | |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 11 | #include "GrDrawTargetCaps.h" |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 12 | #include "GrProcessor.h" |
joshualitt | 249af15 | 2014-09-15 11:41:13 -0700 | [diff] [blame] | 13 | #include "GrGeometryProcessor.h" |
egdaniel | 605dd0f | 2014-11-12 08:35:25 -0800 | [diff] [blame] | 14 | #include "GrInvariantOutput.h" |
commit-bot@chromium.org | cabf4b2 | 2014-03-05 18:27:43 +0000 | [diff] [blame] | 15 | #include "GrTypesPriv.h" |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 16 | |
| 17 | /** |
| 18 | * Shader is based off of Loop-Blinn Quadratic GPU Rendering |
| 19 | * The output of this effect is a hairline edge for conics. |
| 20 | * Conics specified by implicit equation K^2 - LM. |
| 21 | * K, L, and M, are the first three values of the vertex attribute, |
| 22 | * the fourth value is not used. Distance is calculated using a |
| 23 | * first order approximation from the taylor series. |
| 24 | * Coverage for AA is max(0, 1-distance). |
| 25 | * |
| 26 | * Test were also run using a second order distance approximation. |
| 27 | * There were two versions of the second order approx. The first version |
| 28 | * is of roughly the form: |
| 29 | * f(q) = |f(p)| - ||f'(p)||*||q-p|| - ||f''(p)||*||q-p||^2. |
| 30 | * The second is similar: |
| 31 | * f(q) = |f(p)| + ||f'(p)||*||q-p|| + ||f''(p)||*||q-p||^2. |
| 32 | * The exact version of the equations can be found in the paper |
| 33 | * "Distance Approximations for Rasterizing Implicit Curves" by Gabriel Taubin |
| 34 | * |
| 35 | * In both versions we solve the quadratic for ||q-p||. |
| 36 | * Version 1: |
| 37 | * gFM is magnitude of first partials and gFM2 is magnitude of 2nd partials (as derived from paper) |
| 38 | * builder->fsCodeAppend("\t\tedgeAlpha = (sqrt(gFM*gFM+4.0*func*gF2M) - gFM)/(2.0*gF2M);\n"); |
| 39 | * Version 2: |
| 40 | * builder->fsCodeAppend("\t\tedgeAlpha = (gFM - sqrt(gFM*gFM-4.0*func*gF2M))/(2.0*gF2M);\n"); |
| 41 | * |
| 42 | * Also note that 2nd partials of k,l,m are zero |
| 43 | * |
| 44 | * When comparing the two second order approximations to the first order approximations, |
| 45 | * the following results were found. Version 1 tends to underestimate the distances, thus it |
| 46 | * basically increases all the error that we were already seeing in the first order |
| 47 | * approx. So this version is not the one to use. Version 2 has the opposite effect |
| 48 | * and tends to overestimate the distances. This is much closer to what we are |
| 49 | * looking for. It is able to render ellipses (even thin ones) without the need to chop. |
| 50 | * However, it can not handle thin hyperbolas well and thus would still rely on |
| 51 | * chopping to tighten the clipping. Another side effect of the overestimating is |
| 52 | * that the curves become much thinner and "ropey". If all that was ever rendered |
| 53 | * were "not too thin" curves and ellipses then 2nd order may have an advantage since |
| 54 | * only one geometry would need to be rendered. However no benches were run comparing |
| 55 | * chopped first order and non chopped 2nd order. |
| 56 | */ |
| 57 | class GrGLConicEffect; |
| 58 | |
joshualitt | 249af15 | 2014-09-15 11:41:13 -0700 | [diff] [blame] | 59 | class GrConicEffect : public GrGeometryProcessor { |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 60 | public: |
joshualitt | 2e3b3e3 | 2014-12-09 13:31:14 -0800 | [diff] [blame] | 61 | static GrGeometryProcessor* Create(GrColor color, |
joshualitt | 8059eb9 | 2014-12-29 15:10:07 -0800 | [diff] [blame] | 62 | const SkMatrix& viewMatrix, |
joshualitt | 2e3b3e3 | 2014-12-09 13:31:14 -0800 | [diff] [blame] | 63 | const GrPrimitiveEdgeType edgeType, |
| 64 | const GrDrawTargetCaps& caps, |
joshualitt | d27f73e | 2014-12-29 07:43:36 -0800 | [diff] [blame] | 65 | const SkMatrix& localMatrix, |
joshualitt | 2e3b3e3 | 2014-12-09 13:31:14 -0800 | [diff] [blame] | 66 | uint8_t coverage = 0xff) { |
commit-bot@chromium.org | cabf4b2 | 2014-03-05 18:27:43 +0000 | [diff] [blame] | 67 | switch (edgeType) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 68 | case kFillAA_GrProcessorEdgeType: |
commit-bot@chromium.org | cabf4b2 | 2014-03-05 18:27:43 +0000 | [diff] [blame] | 69 | if (!caps.shaderDerivativeSupport()) { |
| 70 | return NULL; |
| 71 | } |
joshualitt | 8059eb9 | 2014-12-29 15:10:07 -0800 | [diff] [blame] | 72 | return SkNEW_ARGS(GrConicEffect, (color, viewMatrix, coverage, |
| 73 | kFillAA_GrProcessorEdgeType, |
joshualitt | d27f73e | 2014-12-29 07:43:36 -0800 | [diff] [blame] | 74 | localMatrix)); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 75 | case kHairlineAA_GrProcessorEdgeType: |
commit-bot@chromium.org | cabf4b2 | 2014-03-05 18:27:43 +0000 | [diff] [blame] | 76 | if (!caps.shaderDerivativeSupport()) { |
| 77 | return NULL; |
| 78 | } |
joshualitt | 8059eb9 | 2014-12-29 15:10:07 -0800 | [diff] [blame] | 79 | return SkNEW_ARGS(GrConicEffect, (color, viewMatrix, coverage, |
joshualitt | d27f73e | 2014-12-29 07:43:36 -0800 | [diff] [blame] | 80 | kHairlineAA_GrProcessorEdgeType, |
| 81 | localMatrix)); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 82 | case kFillBW_GrProcessorEdgeType: |
joshualitt | 8059eb9 | 2014-12-29 15:10:07 -0800 | [diff] [blame] | 83 | return SkNEW_ARGS(GrConicEffect, (color, viewMatrix, coverage, |
| 84 | kFillBW_GrProcessorEdgeType, |
joshualitt | d27f73e | 2014-12-29 07:43:36 -0800 | [diff] [blame] | 85 | localMatrix)); |
commit-bot@chromium.org | cabf4b2 | 2014-03-05 18:27:43 +0000 | [diff] [blame] | 86 | default: |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 87 | return NULL; |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 88 | } |
| 89 | } |
| 90 | |
| 91 | virtual ~GrConicEffect(); |
| 92 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame^] | 93 | const char* name() const override { return "Conic"; } |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 94 | |
joshualitt | 71c9260 | 2015-01-14 08:12:47 -0800 | [diff] [blame] | 95 | inline const Attribute* inPosition() const { return fInPosition; } |
| 96 | inline const Attribute* inConicCoeffs() const { return fInConicCoeffs; } |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 97 | inline bool isAntiAliased() const { return GrProcessorEdgeTypeIsAA(fEdgeType); } |
| 98 | inline bool isFilled() const { return GrProcessorEdgeTypeIsFill(fEdgeType); } |
| 99 | inline GrPrimitiveEdgeType getEdgeType() const { return fEdgeType; } |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 100 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 101 | virtual void getGLProcessorKey(const GrBatchTracker& bt, |
| 102 | const GrGLCaps& caps, |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame^] | 103 | GrProcessorKeyBuilder* b) const override; |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 104 | |
joshualitt | abb52a1 | 2015-01-13 15:02:10 -0800 | [diff] [blame] | 105 | virtual GrGLPrimitiveProcessor* createGLInstance(const GrBatchTracker& bt, |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame^] | 106 | const GrGLCaps&) const override; |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 107 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame^] | 108 | void initBatchTracker(GrBatchTracker*, const GrPipelineInfo&) const override; |
joshualitt | 290c09b | 2014-12-19 13:45:20 -0800 | [diff] [blame] | 109 | bool onCanMakeEqual(const GrBatchTracker&, |
| 110 | const GrGeometryProcessor&, |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame^] | 111 | const GrBatchTracker&) const override; |
joshualitt | 9b98932 | 2014-12-15 14:16:27 -0800 | [diff] [blame] | 112 | |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 113 | private: |
joshualitt | 8059eb9 | 2014-12-29 15:10:07 -0800 | [diff] [blame] | 114 | GrConicEffect(GrColor, const SkMatrix& viewMatrix, uint8_t coverage, GrPrimitiveEdgeType, |
| 115 | const SkMatrix& localMatrix); |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 116 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame^] | 117 | bool onIsEqual(const GrGeometryProcessor& other) const override; |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 118 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame^] | 119 | void onGetInvariantOutputCoverage(GrInitInvariantOutput* out) const override { |
joshualitt | 56995b5 | 2014-12-11 15:44:02 -0800 | [diff] [blame] | 120 | out->setUnknownSingleComponent(); |
egdaniel | 1a8ecdf | 2014-10-03 06:24:12 -0700 | [diff] [blame] | 121 | } |
| 122 | |
joshualitt | 9b98932 | 2014-12-15 14:16:27 -0800 | [diff] [blame] | 123 | uint8_t fCoverageScale; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 124 | GrPrimitiveEdgeType fEdgeType; |
joshualitt | 71c9260 | 2015-01-14 08:12:47 -0800 | [diff] [blame] | 125 | const Attribute* fInPosition; |
| 126 | const Attribute* fInConicCoeffs; |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 127 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 128 | GR_DECLARE_GEOMETRY_PROCESSOR_TEST; |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 129 | |
joshualitt | 249af15 | 2014-09-15 11:41:13 -0700 | [diff] [blame] | 130 | typedef GrGeometryProcessor INHERITED; |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 131 | }; |
| 132 | |
| 133 | /////////////////////////////////////////////////////////////////////////////// |
| 134 | /** |
| 135 | * The output of this effect is a hairline edge for quadratics. |
| 136 | * Quadratic specified by 0=u^2-v canonical coords. u and v are the first |
| 137 | * two components of the vertex attribute. At the three control points that define |
| 138 | * the Quadratic, u, v have the values {0,0}, {1/2, 0}, and {1, 1} respectively. |
| 139 | * Coverage for AA is min(0, 1-distance). 3rd & 4th cimponent unused. |
| 140 | * Requires shader derivative instruction support. |
| 141 | */ |
| 142 | class GrGLQuadEffect; |
| 143 | |
joshualitt | 249af15 | 2014-09-15 11:41:13 -0700 | [diff] [blame] | 144 | class GrQuadEffect : public GrGeometryProcessor { |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 145 | public: |
joshualitt | 2e3b3e3 | 2014-12-09 13:31:14 -0800 | [diff] [blame] | 146 | static GrGeometryProcessor* Create(GrColor color, |
joshualitt | 8059eb9 | 2014-12-29 15:10:07 -0800 | [diff] [blame] | 147 | const SkMatrix& viewMatrix, |
joshualitt | 2e3b3e3 | 2014-12-09 13:31:14 -0800 | [diff] [blame] | 148 | const GrPrimitiveEdgeType edgeType, |
| 149 | const GrDrawTargetCaps& caps, |
joshualitt | d27f73e | 2014-12-29 07:43:36 -0800 | [diff] [blame] | 150 | const SkMatrix& localMatrix, |
joshualitt | 2e3b3e3 | 2014-12-09 13:31:14 -0800 | [diff] [blame] | 151 | uint8_t coverage = 0xff) { |
commit-bot@chromium.org | cabf4b2 | 2014-03-05 18:27:43 +0000 | [diff] [blame] | 152 | switch (edgeType) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 153 | case kFillAA_GrProcessorEdgeType: |
commit-bot@chromium.org | cabf4b2 | 2014-03-05 18:27:43 +0000 | [diff] [blame] | 154 | if (!caps.shaderDerivativeSupport()) { |
| 155 | return NULL; |
| 156 | } |
joshualitt | 8059eb9 | 2014-12-29 15:10:07 -0800 | [diff] [blame] | 157 | return SkNEW_ARGS(GrQuadEffect, (color, viewMatrix, coverage, |
| 158 | kFillAA_GrProcessorEdgeType, |
joshualitt | d27f73e | 2014-12-29 07:43:36 -0800 | [diff] [blame] | 159 | localMatrix)); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 160 | case kHairlineAA_GrProcessorEdgeType: |
commit-bot@chromium.org | cabf4b2 | 2014-03-05 18:27:43 +0000 | [diff] [blame] | 161 | if (!caps.shaderDerivativeSupport()) { |
| 162 | return NULL; |
| 163 | } |
joshualitt | 8059eb9 | 2014-12-29 15:10:07 -0800 | [diff] [blame] | 164 | return SkNEW_ARGS(GrQuadEffect, (color, viewMatrix, coverage, |
| 165 | kHairlineAA_GrProcessorEdgeType, |
joshualitt | d27f73e | 2014-12-29 07:43:36 -0800 | [diff] [blame] | 166 | localMatrix)); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 167 | case kFillBW_GrProcessorEdgeType: |
joshualitt | 8059eb9 | 2014-12-29 15:10:07 -0800 | [diff] [blame] | 168 | return SkNEW_ARGS(GrQuadEffect, (color, viewMatrix, coverage, |
| 169 | kFillBW_GrProcessorEdgeType, |
joshualitt | d27f73e | 2014-12-29 07:43:36 -0800 | [diff] [blame] | 170 | localMatrix)); |
commit-bot@chromium.org | cabf4b2 | 2014-03-05 18:27:43 +0000 | [diff] [blame] | 171 | default: |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 172 | return NULL; |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 173 | } |
| 174 | } |
| 175 | |
| 176 | virtual ~GrQuadEffect(); |
| 177 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame^] | 178 | const char* name() const override { return "Quad"; } |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 179 | |
joshualitt | 71c9260 | 2015-01-14 08:12:47 -0800 | [diff] [blame] | 180 | inline const Attribute* inPosition() const { return fInPosition; } |
| 181 | inline const Attribute* inHairQuadEdge() const { return fInHairQuadEdge; } |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 182 | inline bool isAntiAliased() const { return GrProcessorEdgeTypeIsAA(fEdgeType); } |
| 183 | inline bool isFilled() const { return GrProcessorEdgeTypeIsFill(fEdgeType); } |
| 184 | inline GrPrimitiveEdgeType getEdgeType() const { return fEdgeType; } |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 185 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 186 | virtual void getGLProcessorKey(const GrBatchTracker& bt, |
| 187 | const GrGLCaps& caps, |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame^] | 188 | GrProcessorKeyBuilder* b) const override; |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 189 | |
joshualitt | abb52a1 | 2015-01-13 15:02:10 -0800 | [diff] [blame] | 190 | virtual GrGLPrimitiveProcessor* createGLInstance(const GrBatchTracker& bt, |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame^] | 191 | const GrGLCaps&) const override; |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 192 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame^] | 193 | void initBatchTracker(GrBatchTracker*, const GrPipelineInfo&) const override; |
joshualitt | 290c09b | 2014-12-19 13:45:20 -0800 | [diff] [blame] | 194 | bool onCanMakeEqual(const GrBatchTracker&, |
| 195 | const GrGeometryProcessor&, |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame^] | 196 | const GrBatchTracker&) const override; |
joshualitt | 9b98932 | 2014-12-15 14:16:27 -0800 | [diff] [blame] | 197 | |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 198 | private: |
joshualitt | 8059eb9 | 2014-12-29 15:10:07 -0800 | [diff] [blame] | 199 | GrQuadEffect(GrColor, const SkMatrix& viewMatrix, uint8_t coverage, GrPrimitiveEdgeType, |
| 200 | const SkMatrix& localMatrix); |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 201 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame^] | 202 | bool onIsEqual(const GrGeometryProcessor& other) const override; |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 203 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame^] | 204 | void onGetInvariantOutputCoverage(GrInitInvariantOutput* out) const override { |
joshualitt | 56995b5 | 2014-12-11 15:44:02 -0800 | [diff] [blame] | 205 | out->setUnknownSingleComponent(); |
egdaniel | 1a8ecdf | 2014-10-03 06:24:12 -0700 | [diff] [blame] | 206 | } |
| 207 | |
joshualitt | 9b98932 | 2014-12-15 14:16:27 -0800 | [diff] [blame] | 208 | uint8_t fCoverageScale; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 209 | GrPrimitiveEdgeType fEdgeType; |
joshualitt | 71c9260 | 2015-01-14 08:12:47 -0800 | [diff] [blame] | 210 | const Attribute* fInPosition; |
| 211 | const Attribute* fInHairQuadEdge; |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 212 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 213 | GR_DECLARE_GEOMETRY_PROCESSOR_TEST; |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 214 | |
joshualitt | 249af15 | 2014-09-15 11:41:13 -0700 | [diff] [blame] | 215 | typedef GrGeometryProcessor INHERITED; |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 216 | }; |
| 217 | |
| 218 | ////////////////////////////////////////////////////////////////////////////// |
| 219 | /** |
| 220 | * Shader is based off of "Resolution Independent Curve Rendering using |
| 221 | * Programmable Graphics Hardware" by Loop and Blinn. |
| 222 | * The output of this effect is a hairline edge for non rational cubics. |
| 223 | * Cubics are specified by implicit equation K^3 - LM. |
| 224 | * K, L, and M, are the first three values of the vertex attribute, |
| 225 | * the fourth value is not used. Distance is calculated using a |
| 226 | * first order approximation from the taylor series. |
| 227 | * Coverage for AA is max(0, 1-distance). |
| 228 | */ |
| 229 | class GrGLCubicEffect; |
| 230 | |
joshualitt | 249af15 | 2014-09-15 11:41:13 -0700 | [diff] [blame] | 231 | class GrCubicEffect : public GrGeometryProcessor { |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 232 | public: |
joshualitt | 2e3b3e3 | 2014-12-09 13:31:14 -0800 | [diff] [blame] | 233 | static GrGeometryProcessor* Create(GrColor color, |
joshualitt | 8059eb9 | 2014-12-29 15:10:07 -0800 | [diff] [blame] | 234 | const SkMatrix& viewMatrix, |
joshualitt | 2e3b3e3 | 2014-12-09 13:31:14 -0800 | [diff] [blame] | 235 | const GrPrimitiveEdgeType edgeType, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 236 | const GrDrawTargetCaps& caps) { |
commit-bot@chromium.org | cabf4b2 | 2014-03-05 18:27:43 +0000 | [diff] [blame] | 237 | switch (edgeType) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 238 | case kFillAA_GrProcessorEdgeType: |
commit-bot@chromium.org | cabf4b2 | 2014-03-05 18:27:43 +0000 | [diff] [blame] | 239 | if (!caps.shaderDerivativeSupport()) { |
| 240 | return NULL; |
| 241 | } |
joshualitt | 8059eb9 | 2014-12-29 15:10:07 -0800 | [diff] [blame] | 242 | return SkNEW_ARGS(GrCubicEffect, (color, viewMatrix, kFillAA_GrProcessorEdgeType)); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 243 | case kHairlineAA_GrProcessorEdgeType: |
commit-bot@chromium.org | cabf4b2 | 2014-03-05 18:27:43 +0000 | [diff] [blame] | 244 | if (!caps.shaderDerivativeSupport()) { |
| 245 | return NULL; |
| 246 | } |
joshualitt | 8059eb9 | 2014-12-29 15:10:07 -0800 | [diff] [blame] | 247 | return SkNEW_ARGS(GrCubicEffect, (color, viewMatrix, |
| 248 | kHairlineAA_GrProcessorEdgeType)); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 249 | case kFillBW_GrProcessorEdgeType: |
joshualitt | 8059eb9 | 2014-12-29 15:10:07 -0800 | [diff] [blame] | 250 | return SkNEW_ARGS(GrCubicEffect, (color, viewMatrix, |
| 251 | kFillBW_GrProcessorEdgeType)); |
commit-bot@chromium.org | cabf4b2 | 2014-03-05 18:27:43 +0000 | [diff] [blame] | 252 | default: |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 253 | return NULL; |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 254 | } |
| 255 | } |
| 256 | |
| 257 | virtual ~GrCubicEffect(); |
| 258 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame^] | 259 | const char* name() const override { return "Cubic"; } |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 260 | |
joshualitt | 71c9260 | 2015-01-14 08:12:47 -0800 | [diff] [blame] | 261 | inline const Attribute* inPosition() const { return fInPosition; } |
| 262 | inline const Attribute* inCubicCoeffs() const { return fInCubicCoeffs; } |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 263 | inline bool isAntiAliased() const { return GrProcessorEdgeTypeIsAA(fEdgeType); } |
| 264 | inline bool isFilled() const { return GrProcessorEdgeTypeIsFill(fEdgeType); } |
| 265 | inline GrPrimitiveEdgeType getEdgeType() const { return fEdgeType; } |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 266 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 267 | virtual void getGLProcessorKey(const GrBatchTracker& bt, |
| 268 | const GrGLCaps& caps, |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame^] | 269 | GrProcessorKeyBuilder* b) const override; |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 270 | |
joshualitt | abb52a1 | 2015-01-13 15:02:10 -0800 | [diff] [blame] | 271 | virtual GrGLPrimitiveProcessor* createGLInstance(const GrBatchTracker& bt, |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame^] | 272 | const GrGLCaps&) const override; |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 273 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame^] | 274 | void initBatchTracker(GrBatchTracker*, const GrPipelineInfo&) const override; |
joshualitt | 290c09b | 2014-12-19 13:45:20 -0800 | [diff] [blame] | 275 | bool onCanMakeEqual(const GrBatchTracker&, |
| 276 | const GrGeometryProcessor&, |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame^] | 277 | const GrBatchTracker&) const override; |
joshualitt | 9b98932 | 2014-12-15 14:16:27 -0800 | [diff] [blame] | 278 | |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 279 | private: |
joshualitt | 8059eb9 | 2014-12-29 15:10:07 -0800 | [diff] [blame] | 280 | GrCubicEffect(GrColor, const SkMatrix& viewMatrix, GrPrimitiveEdgeType); |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 281 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame^] | 282 | bool onIsEqual(const GrGeometryProcessor& other) const override; |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 283 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame^] | 284 | void onGetInvariantOutputCoverage(GrInitInvariantOutput* out) const override { |
joshualitt | 56995b5 | 2014-12-11 15:44:02 -0800 | [diff] [blame] | 285 | out->setUnknownSingleComponent(); |
egdaniel | 1a8ecdf | 2014-10-03 06:24:12 -0700 | [diff] [blame] | 286 | } |
| 287 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 288 | GrPrimitiveEdgeType fEdgeType; |
joshualitt | 71c9260 | 2015-01-14 08:12:47 -0800 | [diff] [blame] | 289 | const Attribute* fInPosition; |
| 290 | const Attribute* fInCubicCoeffs; |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 291 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 292 | GR_DECLARE_GEOMETRY_PROCESSOR_TEST; |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 293 | |
joshualitt | 249af15 | 2014-09-15 11:41:13 -0700 | [diff] [blame] | 294 | typedef GrGeometryProcessor INHERITED; |
commit-bot@chromium.org | 07e1c3f | 2013-08-22 20:41:15 +0000 | [diff] [blame] | 295 | }; |
| 296 | |
| 297 | #endif |