robertphillips@google.com | f6747b0 | 2012-06-12 00:32:28 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2012 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
| 8 | #include "GrAARectRenderer.h" |
| 9 | #include "GrRefCnt.h" |
| 10 | #include "GrGpu.h" |
robertphillips@google.com | df3695e | 2013-04-09 14:01:44 +0000 | [diff] [blame] | 11 | #include "gl/GrGLEffect.h" |
| 12 | #include "GrTBackendEffectFactory.h" |
robertphillips@google.com | f6747b0 | 2012-06-12 00:32:28 +0000 | [diff] [blame] | 13 | |
robertphillips@google.com | 4d73ac2 | 2012-06-13 18:54:08 +0000 | [diff] [blame] | 14 | SK_DEFINE_INST_COUNT(GrAARectRenderer) |
robertphillips@google.com | f6747b0 | 2012-06-12 00:32:28 +0000 | [diff] [blame] | 15 | |
robertphillips@google.com | b19cb7f | 2013-05-02 15:37:20 +0000 | [diff] [blame] | 16 | /////////////////////////////////////////////////////////////////////////////// |
| 17 | class GrGLAlignedRectEffect; |
| 18 | |
| 19 | // Axis Aligned special case |
| 20 | class GrAlignedRectEffect : public GrEffect { |
| 21 | public: |
| 22 | static GrEffectRef* Create() { |
| 23 | GR_CREATE_STATIC_EFFECT(gAlignedRectEffect, GrAlignedRectEffect, ()); |
| 24 | gAlignedRectEffect->ref(); |
| 25 | return gAlignedRectEffect; |
| 26 | } |
| 27 | |
| 28 | virtual ~GrAlignedRectEffect() {} |
| 29 | |
| 30 | static const char* Name() { return "AlignedRectEdge"; } |
| 31 | |
| 32 | virtual void getConstantColorComponents(GrColor* color, |
| 33 | uint32_t* validFlags) const SK_OVERRIDE { |
| 34 | *validFlags = 0; |
| 35 | } |
| 36 | |
| 37 | virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE { |
| 38 | return GrTBackendEffectFactory<GrAlignedRectEffect>::getInstance(); |
| 39 | } |
| 40 | |
| 41 | class GLEffect : public GrGLEffect { |
| 42 | public: |
| 43 | GLEffect(const GrBackendEffectFactory& factory, const GrDrawEffect&) |
| 44 | : INHERITED (factory) {} |
| 45 | |
| 46 | virtual void emitCode(GrGLShaderBuilder* builder, |
| 47 | const GrDrawEffect& drawEffect, |
| 48 | EffectKey key, |
| 49 | const char* outputColor, |
| 50 | const char* inputColor, |
| 51 | const TextureSamplerArray& samplers) SK_OVERRIDE { |
| 52 | // setup the varying for the Axis aligned rect effect |
| 53 | // xy -> interpolated offset |
| 54 | // zw -> w/2+0.5, h/2+0.5 |
| 55 | const char *vsRectName, *fsRectName; |
| 56 | builder->addVarying(kVec4f_GrSLType, "Rect", &vsRectName, &fsRectName); |
| 57 | const SkString* attr0Name = |
| 58 | builder->getEffectAttributeName(drawEffect.getVertexAttribIndices()[0]); |
| 59 | builder->vsCodeAppendf("\t%s = %s;\n", vsRectName, attr0Name->c_str()); |
| 60 | |
| 61 | // TODO: compute these scale factors in the VS |
| 62 | // These scale factors adjust the coverage for < 1 pixel wide/high rects |
| 63 | builder->fsCodeAppendf("\tfloat wScale = max(1.0, 2.0/(0.5+%s.z));\n", |
| 64 | fsRectName); |
| 65 | builder->fsCodeAppendf("\tfloat hScale = max(1.0, 2.0/(0.5+%s.w));\n", |
| 66 | fsRectName); |
| 67 | |
| 68 | // Compute the coverage for the rect's width |
| 69 | builder->fsCodeAppendf("\tfloat coverage = clamp(wScale*(%s.z-abs(%s.x)), 0.0, 1.0);\n", |
| 70 | fsRectName, |
| 71 | fsRectName); |
| 72 | |
| 73 | // Compute the coverage for the rect's height and merge with the width |
| 74 | builder->fsCodeAppendf( |
| 75 | "\tcoverage = min(coverage, clamp(hScale*(%s.w-abs(%s.y)), 0.0, 1.0));\n", |
| 76 | fsRectName, |
| 77 | fsRectName); |
| 78 | |
| 79 | SkString modulate; |
| 80 | GrGLSLModulatef<4>(&modulate, inputColor, "coverage"); |
| 81 | builder->fsCodeAppendf("\t%s = %s;\n", outputColor, modulate.c_str()); |
| 82 | } |
| 83 | |
| 84 | static inline EffectKey GenKey(const GrDrawEffect& drawEffect, const GrGLCaps&) { |
| 85 | return 0; |
| 86 | } |
| 87 | |
| 88 | virtual void setData(const GrGLUniformManager& uman, const GrDrawEffect&) SK_OVERRIDE {} |
| 89 | |
| 90 | private: |
| 91 | typedef GrGLEffect INHERITED; |
| 92 | }; |
| 93 | |
| 94 | |
| 95 | private: |
| 96 | GrAlignedRectEffect() : GrEffect() { |
| 97 | this->addVertexAttrib(kVec4f_GrSLType); |
| 98 | } |
| 99 | |
| 100 | virtual bool onIsEqual(const GrEffect&) const SK_OVERRIDE { return true; } |
| 101 | |
| 102 | GR_DECLARE_EFFECT_TEST; |
| 103 | |
| 104 | typedef GrEffect INHERITED; |
| 105 | }; |
| 106 | |
| 107 | |
| 108 | GR_DEFINE_EFFECT_TEST(GrAlignedRectEffect); |
| 109 | |
| 110 | GrEffectRef* GrAlignedRectEffect::TestCreate(SkMWCRandom* random, |
| 111 | GrContext* context, |
| 112 | const GrDrawTargetCaps&, |
| 113 | GrTexture* textures[]) { |
| 114 | return GrAlignedRectEffect::Create(); |
| 115 | } |
| 116 | |
| 117 | /////////////////////////////////////////////////////////////////////////////// |
robertphillips@google.com | df3695e | 2013-04-09 14:01:44 +0000 | [diff] [blame] | 118 | class GrGLRectEffect; |
| 119 | |
| 120 | /** |
skia.committer@gmail.com | 07d3a65 | 2013-04-10 07:01:15 +0000 | [diff] [blame] | 121 | * The output of this effect is a modulation of the input color and coverage |
robertphillips@google.com | df3695e | 2013-04-09 14:01:44 +0000 | [diff] [blame] | 122 | * for an arbitrarily oriented rect. The rect is specified as: |
| 123 | * Center of the rect |
| 124 | * Unit vector point down the height of the rect |
| 125 | * Half width + 0.5 |
| 126 | * Half height + 0.5 |
| 127 | * The center and vector are stored in a vec4 varying ("RectEdge") with the |
| 128 | * center in the xy components and the vector in the zw components. |
| 129 | * The munged width and height are stored in a vec2 varying ("WidthHeight") |
| 130 | * with the width in x and the height in y. |
| 131 | */ |
| 132 | class GrRectEffect : public GrEffect { |
| 133 | public: |
| 134 | static GrEffectRef* Create() { |
bsalomon@google.com | d42aca3 | 2013-04-23 15:37:27 +0000 | [diff] [blame] | 135 | GR_CREATE_STATIC_EFFECT(gRectEffect, GrRectEffect, ()); |
| 136 | gRectEffect->ref(); |
| 137 | return gRectEffect; |
robertphillips@google.com | df3695e | 2013-04-09 14:01:44 +0000 | [diff] [blame] | 138 | } |
| 139 | |
| 140 | virtual ~GrRectEffect() {} |
| 141 | |
| 142 | static const char* Name() { return "RectEdge"; } |
| 143 | |
skia.committer@gmail.com | 07d3a65 | 2013-04-10 07:01:15 +0000 | [diff] [blame] | 144 | virtual void getConstantColorComponents(GrColor* color, |
robertphillips@google.com | df3695e | 2013-04-09 14:01:44 +0000 | [diff] [blame] | 145 | uint32_t* validFlags) const SK_OVERRIDE { |
| 146 | *validFlags = 0; |
| 147 | } |
| 148 | |
| 149 | virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE { |
| 150 | return GrTBackendEffectFactory<GrRectEffect>::getInstance(); |
| 151 | } |
| 152 | |
| 153 | class GLEffect : public GrGLEffect { |
| 154 | public: |
| 155 | GLEffect(const GrBackendEffectFactory& factory, const GrDrawEffect&) |
| 156 | : INHERITED (factory) {} |
| 157 | |
| 158 | virtual void emitCode(GrGLShaderBuilder* builder, |
| 159 | const GrDrawEffect& drawEffect, |
| 160 | EffectKey key, |
| 161 | const char* outputColor, |
| 162 | const char* inputColor, |
| 163 | const TextureSamplerArray& samplers) SK_OVERRIDE { |
| 164 | // setup the varying for the center point and the unit vector |
| 165 | // that points down the height of the rect |
| 166 | const char *vsRectEdgeName, *fsRectEdgeName; |
skia.committer@gmail.com | 07d3a65 | 2013-04-10 07:01:15 +0000 | [diff] [blame] | 167 | builder->addVarying(kVec4f_GrSLType, "RectEdge", |
robertphillips@google.com | df3695e | 2013-04-09 14:01:44 +0000 | [diff] [blame] | 168 | &vsRectEdgeName, &fsRectEdgeName); |
skia.committer@gmail.com | 07d3a65 | 2013-04-10 07:01:15 +0000 | [diff] [blame] | 169 | const SkString* attr0Name = |
robertphillips@google.com | df3695e | 2013-04-09 14:01:44 +0000 | [diff] [blame] | 170 | builder->getEffectAttributeName(drawEffect.getVertexAttribIndices()[0]); |
| 171 | builder->vsCodeAppendf("\t%s = %s;\n", vsRectEdgeName, attr0Name->c_str()); |
| 172 | |
| 173 | // setup the varying for width/2+.5 and height/2+.5 |
| 174 | const char *vsWidthHeightName, *fsWidthHeightName; |
skia.committer@gmail.com | 07d3a65 | 2013-04-10 07:01:15 +0000 | [diff] [blame] | 175 | builder->addVarying(kVec2f_GrSLType, "WidthHeight", |
robertphillips@google.com | df3695e | 2013-04-09 14:01:44 +0000 | [diff] [blame] | 176 | &vsWidthHeightName, &fsWidthHeightName); |
| 177 | const SkString* attr1Name = |
| 178 | builder->getEffectAttributeName(drawEffect.getVertexAttribIndices()[1]); |
| 179 | builder->vsCodeAppendf("\t%s = %s;\n", vsWidthHeightName, attr1Name->c_str()); |
| 180 | |
| 181 | // TODO: compute these scale factors in the VS |
| 182 | // These scale factors adjust the coverage for < 1 pixel wide/high rects |
skia.committer@gmail.com | 07d3a65 | 2013-04-10 07:01:15 +0000 | [diff] [blame] | 183 | builder->fsCodeAppendf("\tfloat wScale = max(1.0, 2.0/(0.5+%s.x));\n", |
robertphillips@google.com | df3695e | 2013-04-09 14:01:44 +0000 | [diff] [blame] | 184 | fsWidthHeightName); |
skia.committer@gmail.com | 07d3a65 | 2013-04-10 07:01:15 +0000 | [diff] [blame] | 185 | builder->fsCodeAppendf("\tfloat hScale = max(1.0, 2.0/(0.5+%s.y));\n", |
robertphillips@google.com | df3695e | 2013-04-09 14:01:44 +0000 | [diff] [blame] | 186 | fsWidthHeightName); |
| 187 | |
| 188 | // Compute the coverage for the rect's width |
skia.committer@gmail.com | 07d3a65 | 2013-04-10 07:01:15 +0000 | [diff] [blame] | 189 | builder->fsCodeAppendf("\tvec2 offset = %s.xy - %s.xy;\n", |
robertphillips@google.com | df3695e | 2013-04-09 14:01:44 +0000 | [diff] [blame] | 190 | builder->fragmentPosition(), fsRectEdgeName); |
| 191 | builder->fsCodeAppendf("\tfloat perpDot = abs(offset.x * %s.w - offset.y * %s.z);\n", |
| 192 | fsRectEdgeName, fsRectEdgeName); |
| 193 | builder->fsCodeAppendf("\tfloat coverage = clamp(wScale*(%s.x-perpDot), 0.0, 1.0);\n", |
| 194 | fsWidthHeightName); |
| 195 | |
| 196 | // Compute the coverage for the rect's height and merge with the width |
| 197 | builder->fsCodeAppendf("\tperpDot = abs(dot(offset, %s.zw));\n", |
| 198 | fsRectEdgeName); |
| 199 | builder->fsCodeAppendf( |
| 200 | "\tcoverage = min(coverage, clamp(hScale*(%s.y-perpDot), 0.0, 1.0));\n", |
| 201 | fsWidthHeightName); |
| 202 | |
| 203 | SkString modulate; |
bsalomon@google.com | 018f179 | 2013-04-18 19:36:09 +0000 | [diff] [blame] | 204 | GrGLSLModulatef<4>(&modulate, inputColor, "coverage"); |
robertphillips@google.com | df3695e | 2013-04-09 14:01:44 +0000 | [diff] [blame] | 205 | builder->fsCodeAppendf("\t%s = %s;\n", outputColor, modulate.c_str()); |
| 206 | } |
| 207 | |
| 208 | static inline EffectKey GenKey(const GrDrawEffect& drawEffect, const GrGLCaps&) { |
| 209 | return 0; |
| 210 | } |
| 211 | |
| 212 | virtual void setData(const GrGLUniformManager& uman, const GrDrawEffect&) SK_OVERRIDE {} |
| 213 | |
| 214 | private: |
| 215 | typedef GrGLEffect INHERITED; |
| 216 | }; |
| 217 | |
| 218 | |
| 219 | private: |
robertphillips@google.com | 59dd716 | 2013-04-09 14:08:15 +0000 | [diff] [blame] | 220 | GrRectEffect() : GrEffect() { |
robertphillips@google.com | df3695e | 2013-04-09 14:01:44 +0000 | [diff] [blame] | 221 | this->addVertexAttrib(kVec4f_GrSLType); |
| 222 | this->addVertexAttrib(kVec2f_GrSLType); |
commit-bot@chromium.org | 8d47ddc | 2013-05-09 14:55:46 +0000 | [diff] [blame^] | 223 | this->setWillReadFragmentPosition(); |
robertphillips@google.com | df3695e | 2013-04-09 14:01:44 +0000 | [diff] [blame] | 224 | } |
| 225 | |
| 226 | virtual bool onIsEqual(const GrEffect&) const SK_OVERRIDE { return true; } |
| 227 | |
| 228 | GR_DECLARE_EFFECT_TEST; |
| 229 | |
| 230 | typedef GrEffect INHERITED; |
| 231 | }; |
| 232 | |
| 233 | |
| 234 | GR_DEFINE_EFFECT_TEST(GrRectEffect); |
| 235 | |
| 236 | GrEffectRef* GrRectEffect::TestCreate(SkMWCRandom* random, |
| 237 | GrContext* context, |
| 238 | const GrDrawTargetCaps&, |
| 239 | GrTexture* textures[]) { |
| 240 | return GrRectEffect::Create(); |
| 241 | } |
| 242 | |
| 243 | /////////////////////////////////////////////////////////////////////////////// |
| 244 | |
robertphillips@google.com | f6747b0 | 2012-06-12 00:32:28 +0000 | [diff] [blame] | 245 | namespace { |
| 246 | |
robertphillips@google.com | 4290330 | 2013-04-20 12:26:07 +0000 | [diff] [blame] | 247 | extern const GrVertexAttrib gAARectCoverageAttribs[] = { |
| 248 | {kVec2f_GrVertexAttribType, 0, kPosition_GrVertexAttribBinding}, |
| 249 | {kVec4ub_GrVertexAttribType, sizeof(GrPoint), kCoverage_GrVertexAttribBinding}, |
| 250 | }; |
| 251 | |
| 252 | extern const GrVertexAttrib gAARectColorAttribs[] = { |
| 253 | {kVec2f_GrVertexAttribType, 0, kPosition_GrVertexAttribBinding}, |
| 254 | {kVec4ub_GrVertexAttribType, sizeof(GrPoint), kColor_GrVertexAttribBinding}, |
| 255 | }; |
| 256 | |
| 257 | static void set_aa_rect_vertex_attributes(GrDrawState* drawState, bool useCoverage) { |
| 258 | if (useCoverage) { |
| 259 | drawState->setVertexAttribs<gAARectCoverageAttribs>(SK_ARRAY_COUNT(gAARectCoverageAttribs)); |
| 260 | } else { |
| 261 | drawState->setVertexAttribs<gAARectColorAttribs>(SK_ARRAY_COUNT(gAARectColorAttribs)); |
| 262 | } |
robertphillips@google.com | f6747b0 | 2012-06-12 00:32:28 +0000 | [diff] [blame] | 263 | } |
| 264 | |
robertphillips@google.com | ca47aae | 2012-12-12 15:58:25 +0000 | [diff] [blame] | 265 | static void set_inset_fan(GrPoint* pts, size_t stride, |
| 266 | const GrRect& r, SkScalar dx, SkScalar dy) { |
robertphillips@google.com | f6747b0 | 2012-06-12 00:32:28 +0000 | [diff] [blame] | 267 | pts->setRectFan(r.fLeft + dx, r.fTop + dy, |
| 268 | r.fRight - dx, r.fBottom - dy, stride); |
| 269 | } |
| 270 | |
| 271 | }; |
| 272 | |
| 273 | void GrAARectRenderer::reset() { |
| 274 | GrSafeSetNull(fAAFillRectIndexBuffer); |
| 275 | GrSafeSetNull(fAAStrokeRectIndexBuffer); |
| 276 | } |
| 277 | |
robertphillips@google.com | 6d06730 | 2012-12-18 21:47:47 +0000 | [diff] [blame] | 278 | static const uint16_t gFillAARectIdx[] = { |
robertphillips@google.com | f6747b0 | 2012-06-12 00:32:28 +0000 | [diff] [blame] | 279 | 0, 1, 5, 5, 4, 0, |
| 280 | 1, 2, 6, 6, 5, 1, |
| 281 | 2, 3, 7, 7, 6, 2, |
| 282 | 3, 0, 4, 4, 7, 3, |
| 283 | 4, 5, 6, 6, 7, 4, |
| 284 | }; |
| 285 | |
robertphillips@google.com | 6d06730 | 2012-12-18 21:47:47 +0000 | [diff] [blame] | 286 | static const int kIndicesPerAAFillRect = GR_ARRAY_COUNT(gFillAARectIdx); |
| 287 | static const int kVertsPerAAFillRect = 8; |
| 288 | static const int kNumAAFillRectsInIndexBuffer = 256; |
robertphillips@google.com | f6747b0 | 2012-06-12 00:32:28 +0000 | [diff] [blame] | 289 | |
| 290 | GrIndexBuffer* GrAARectRenderer::aaFillRectIndexBuffer(GrGpu* gpu) { |
robertphillips@google.com | 6d06730 | 2012-12-18 21:47:47 +0000 | [diff] [blame] | 291 | static const size_t kAAFillRectIndexBufferSize = kIndicesPerAAFillRect * |
| 292 | sizeof(uint16_t) * |
| 293 | kNumAAFillRectsInIndexBuffer; |
| 294 | |
robertphillips@google.com | f6747b0 | 2012-06-12 00:32:28 +0000 | [diff] [blame] | 295 | if (NULL == fAAFillRectIndexBuffer) { |
robertphillips@google.com | 6d06730 | 2012-12-18 21:47:47 +0000 | [diff] [blame] | 296 | fAAFillRectIndexBuffer = gpu->createIndexBuffer(kAAFillRectIndexBufferSize, false); |
robertphillips@google.com | f6747b0 | 2012-06-12 00:32:28 +0000 | [diff] [blame] | 297 | if (NULL != fAAFillRectIndexBuffer) { |
robertphillips@google.com | 6d06730 | 2012-12-18 21:47:47 +0000 | [diff] [blame] | 298 | uint16_t* data = (uint16_t*) fAAFillRectIndexBuffer->lock(); |
| 299 | bool useTempData = (NULL == data); |
| 300 | if (useTempData) { |
| 301 | data = SkNEW_ARRAY(uint16_t, kNumAAFillRectsInIndexBuffer * kIndicesPerAAFillRect); |
| 302 | } |
| 303 | for (int i = 0; i < kNumAAFillRectsInIndexBuffer; ++i) { |
| 304 | // Each AA filled rect is drawn with 8 vertices and 10 triangles (8 around |
| 305 | // the inner rect (for AA) and 2 for the inner rect. |
| 306 | int baseIdx = i * kIndicesPerAAFillRect; |
| 307 | uint16_t baseVert = (uint16_t)(i * kVertsPerAAFillRect); |
| 308 | for (int j = 0; j < kIndicesPerAAFillRect; ++j) { |
| 309 | data[baseIdx+j] = baseVert + gFillAARectIdx[j]; |
| 310 | } |
| 311 | } |
| 312 | if (useTempData) { |
| 313 | if (!fAAFillRectIndexBuffer->updateData(data, kAAFillRectIndexBufferSize)) { |
| 314 | GrCrash("Can't get AA Fill Rect indices into buffer!"); |
| 315 | } |
| 316 | SkDELETE_ARRAY(data); |
| 317 | } else { |
| 318 | fAAFillRectIndexBuffer->unlock(); |
| 319 | } |
robertphillips@google.com | f6747b0 | 2012-06-12 00:32:28 +0000 | [diff] [blame] | 320 | } |
| 321 | } |
robertphillips@google.com | 6d06730 | 2012-12-18 21:47:47 +0000 | [diff] [blame] | 322 | |
robertphillips@google.com | f6747b0 | 2012-06-12 00:32:28 +0000 | [diff] [blame] | 323 | return fAAFillRectIndexBuffer; |
| 324 | } |
| 325 | |
robertphillips@google.com | 6d06730 | 2012-12-18 21:47:47 +0000 | [diff] [blame] | 326 | static const uint16_t gStrokeAARectIdx[] = { |
robertphillips@google.com | f6747b0 | 2012-06-12 00:32:28 +0000 | [diff] [blame] | 327 | 0 + 0, 1 + 0, 5 + 0, 5 + 0, 4 + 0, 0 + 0, |
| 328 | 1 + 0, 2 + 0, 6 + 0, 6 + 0, 5 + 0, 1 + 0, |
| 329 | 2 + 0, 3 + 0, 7 + 0, 7 + 0, 6 + 0, 2 + 0, |
| 330 | 3 + 0, 0 + 0, 4 + 0, 4 + 0, 7 + 0, 3 + 0, |
| 331 | |
| 332 | 0 + 4, 1 + 4, 5 + 4, 5 + 4, 4 + 4, 0 + 4, |
| 333 | 1 + 4, 2 + 4, 6 + 4, 6 + 4, 5 + 4, 1 + 4, |
| 334 | 2 + 4, 3 + 4, 7 + 4, 7 + 4, 6 + 4, 2 + 4, |
| 335 | 3 + 4, 0 + 4, 4 + 4, 4 + 4, 7 + 4, 3 + 4, |
| 336 | |
| 337 | 0 + 8, 1 + 8, 5 + 8, 5 + 8, 4 + 8, 0 + 8, |
| 338 | 1 + 8, 2 + 8, 6 + 8, 6 + 8, 5 + 8, 1 + 8, |
| 339 | 2 + 8, 3 + 8, 7 + 8, 7 + 8, 6 + 8, 2 + 8, |
| 340 | 3 + 8, 0 + 8, 4 + 8, 4 + 8, 7 + 8, 3 + 8, |
| 341 | }; |
| 342 | |
| 343 | int GrAARectRenderer::aaStrokeRectIndexCount() { |
| 344 | return GR_ARRAY_COUNT(gStrokeAARectIdx); |
| 345 | } |
| 346 | |
| 347 | GrIndexBuffer* GrAARectRenderer::aaStrokeRectIndexBuffer(GrGpu* gpu) { |
| 348 | if (NULL == fAAStrokeRectIndexBuffer) { |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 349 | fAAStrokeRectIndexBuffer = |
robertphillips@google.com | f6747b0 | 2012-06-12 00:32:28 +0000 | [diff] [blame] | 350 | gpu->createIndexBuffer(sizeof(gStrokeAARectIdx), false); |
| 351 | if (NULL != fAAStrokeRectIndexBuffer) { |
| 352 | #if GR_DEBUG |
| 353 | bool updated = |
| 354 | #endif |
| 355 | fAAStrokeRectIndexBuffer->updateData(gStrokeAARectIdx, |
| 356 | sizeof(gStrokeAARectIdx)); |
| 357 | GR_DEBUGASSERT(updated); |
| 358 | } |
| 359 | } |
| 360 | return fAAStrokeRectIndexBuffer; |
| 361 | } |
| 362 | |
robertphillips@google.com | b19cb7f | 2013-05-02 15:37:20 +0000 | [diff] [blame] | 363 | void GrAARectRenderer::geometryFillAARect(GrGpu* gpu, |
| 364 | GrDrawTarget* target, |
robertphillips@google.com | 4b140b5 | 2013-05-02 17:13:13 +0000 | [diff] [blame] | 365 | const GrRect& rect, |
| 366 | const SkMatrix& combinedMatrix, |
robertphillips@google.com | b19cb7f | 2013-05-02 15:37:20 +0000 | [diff] [blame] | 367 | const GrRect& devRect, |
| 368 | bool useVertexCoverage) { |
jvanverth@google.com | 9b855c7 | 2013-03-01 18:21:22 +0000 | [diff] [blame] | 369 | GrDrawState* drawState = target->drawState(); |
| 370 | |
robertphillips@google.com | 4290330 | 2013-04-20 12:26:07 +0000 | [diff] [blame] | 371 | set_aa_rect_vertex_attributes(drawState, useVertexCoverage); |
robertphillips@google.com | f6747b0 | 2012-06-12 00:32:28 +0000 | [diff] [blame] | 372 | |
jvanverth@google.com | b75b0a0 | 2013-02-05 20:33:30 +0000 | [diff] [blame] | 373 | GrDrawTarget::AutoReleaseGeometry geo(target, 8, 0); |
robertphillips@google.com | f6747b0 | 2012-06-12 00:32:28 +0000 | [diff] [blame] | 374 | if (!geo.succeeded()) { |
| 375 | GrPrintf("Failed to get space for vertices!\n"); |
| 376 | return; |
| 377 | } |
robertphillips@google.com | 6d06730 | 2012-12-18 21:47:47 +0000 | [diff] [blame] | 378 | |
robertphillips@google.com | f6747b0 | 2012-06-12 00:32:28 +0000 | [diff] [blame] | 379 | GrIndexBuffer* indexBuffer = this->aaFillRectIndexBuffer(gpu); |
| 380 | if (NULL == indexBuffer) { |
| 381 | GrPrintf("Failed to create index buffer!\n"); |
| 382 | return; |
| 383 | } |
| 384 | |
| 385 | intptr_t verts = reinterpret_cast<intptr_t>(geo.vertices()); |
jvanverth@google.com | 9b855c7 | 2013-03-01 18:21:22 +0000 | [diff] [blame] | 386 | size_t vsize = drawState->getVertexSize(); |
| 387 | GrAssert(sizeof(GrPoint) + sizeof(GrColor) == vsize); |
robertphillips@google.com | f6747b0 | 2012-06-12 00:32:28 +0000 | [diff] [blame] | 388 | |
| 389 | GrPoint* fan0Pos = reinterpret_cast<GrPoint*>(verts); |
| 390 | GrPoint* fan1Pos = reinterpret_cast<GrPoint*>(verts + 4 * vsize); |
| 391 | |
robertphillips@google.com | 4b140b5 | 2013-05-02 17:13:13 +0000 | [diff] [blame] | 392 | if (combinedMatrix.rectStaysRect()) { |
| 393 | set_inset_fan(fan0Pos, vsize, devRect, -SK_ScalarHalf, -SK_ScalarHalf); |
| 394 | set_inset_fan(fan1Pos, vsize, devRect, SK_ScalarHalf, SK_ScalarHalf); |
| 395 | } else { |
| 396 | // compute transformed (1, 0) and (0, 1) vectors |
| 397 | SkVector vec[2] = { |
| 398 | { combinedMatrix[SkMatrix::kMScaleX], combinedMatrix[SkMatrix::kMSkewY] }, |
| 399 | { combinedMatrix[SkMatrix::kMSkewX], combinedMatrix[SkMatrix::kMScaleY] } |
| 400 | }; |
| 401 | |
| 402 | vec[0].normalize(); |
| 403 | vec[0].scale(SK_ScalarHalf); |
| 404 | vec[1].normalize(); |
| 405 | vec[1].scale(SK_ScalarHalf); |
| 406 | |
| 407 | fan0Pos->setRectFan(rect.fLeft, rect.fTop, |
| 408 | rect.fRight, rect.fBottom, vsize); |
| 409 | combinedMatrix.mapPointsWithStride(fan0Pos, vsize, 4); |
| 410 | |
| 411 | // TL |
skia.committer@gmail.com | 2fd42c4 | 2013-05-03 07:01:00 +0000 | [diff] [blame] | 412 | *((SkPoint*)((intptr_t)fan1Pos + 0 * vsize)) = |
robertphillips@google.com | 4b140b5 | 2013-05-02 17:13:13 +0000 | [diff] [blame] | 413 | *((SkPoint*)((intptr_t)fan0Pos + 0 * vsize)) + vec[0] + vec[1]; |
| 414 | *((SkPoint*)((intptr_t)fan0Pos + 0 * vsize)) -= vec[0] + vec[1]; |
| 415 | // BL |
skia.committer@gmail.com | 2fd42c4 | 2013-05-03 07:01:00 +0000 | [diff] [blame] | 416 | *((SkPoint*)((intptr_t)fan1Pos + 1 * vsize)) = |
robertphillips@google.com | 4b140b5 | 2013-05-02 17:13:13 +0000 | [diff] [blame] | 417 | *((SkPoint*)((intptr_t)fan0Pos + 1 * vsize)) + vec[0] - vec[1]; |
| 418 | *((SkPoint*)((intptr_t)fan0Pos + 1 * vsize)) -= vec[0] - vec[1]; |
| 419 | // BR |
skia.committer@gmail.com | 2fd42c4 | 2013-05-03 07:01:00 +0000 | [diff] [blame] | 420 | *((SkPoint*)((intptr_t)fan1Pos + 2 * vsize)) = |
robertphillips@google.com | 4b140b5 | 2013-05-02 17:13:13 +0000 | [diff] [blame] | 421 | *((SkPoint*)((intptr_t)fan0Pos + 2 * vsize)) - vec[0] - vec[1]; |
| 422 | *((SkPoint*)((intptr_t)fan0Pos + 2 * vsize)) += vec[0] + vec[1]; |
| 423 | // TR |
skia.committer@gmail.com | 2fd42c4 | 2013-05-03 07:01:00 +0000 | [diff] [blame] | 424 | *((SkPoint*)((intptr_t)fan1Pos + 3 * vsize)) = |
robertphillips@google.com | 4b140b5 | 2013-05-02 17:13:13 +0000 | [diff] [blame] | 425 | *((SkPoint*)((intptr_t)fan0Pos + 3 * vsize)) - vec[0] + vec[1]; |
| 426 | *((SkPoint*)((intptr_t)fan0Pos + 3 * vsize)) += vec[0] - vec[1]; |
| 427 | } |
robertphillips@google.com | f6747b0 | 2012-06-12 00:32:28 +0000 | [diff] [blame] | 428 | |
| 429 | verts += sizeof(GrPoint); |
| 430 | for (int i = 0; i < 4; ++i) { |
| 431 | *reinterpret_cast<GrColor*>(verts + i * vsize) = 0; |
| 432 | } |
| 433 | |
| 434 | GrColor innerColor; |
skia.committer@gmail.com | 2fd42c4 | 2013-05-03 07:01:00 +0000 | [diff] [blame] | 435 | if (useVertexCoverage) { |
robertphillips@google.com | f6747b0 | 2012-06-12 00:32:28 +0000 | [diff] [blame] | 436 | innerColor = 0xffffffff; |
| 437 | } else { |
| 438 | innerColor = target->getDrawState().getColor(); |
| 439 | } |
| 440 | |
| 441 | verts += 4 * vsize; |
| 442 | for (int i = 0; i < 4; ++i) { |
| 443 | *reinterpret_cast<GrColor*>(verts + i * vsize) = innerColor; |
| 444 | } |
| 445 | |
| 446 | target->setIndexSourceToBuffer(indexBuffer); |
robertphillips@google.com | 6d06730 | 2012-12-18 21:47:47 +0000 | [diff] [blame] | 447 | target->drawIndexedInstances(kTriangles_GrPrimitiveType, 1, |
| 448 | kVertsPerAAFillRect, |
| 449 | kIndicesPerAAFillRect); |
bsalomon@google.com | 0406b9e | 2013-04-02 21:00:15 +0000 | [diff] [blame] | 450 | target->resetIndexSource(); |
robertphillips@google.com | f6747b0 | 2012-06-12 00:32:28 +0000 | [diff] [blame] | 451 | } |
| 452 | |
robertphillips@google.com | b19cb7f | 2013-05-02 15:37:20 +0000 | [diff] [blame] | 453 | namespace { |
| 454 | |
| 455 | // Rotated |
robertphillips@google.com | df3695e | 2013-04-09 14:01:44 +0000 | [diff] [blame] | 456 | struct RectVertex { |
| 457 | GrPoint fPos; |
| 458 | GrPoint fCenter; |
| 459 | GrPoint fDir; |
| 460 | GrPoint fWidthHeight; |
| 461 | }; |
| 462 | |
robertphillips@google.com | b19cb7f | 2013-05-02 15:37:20 +0000 | [diff] [blame] | 463 | // Rotated |
robertphillips@google.com | 4290330 | 2013-04-20 12:26:07 +0000 | [diff] [blame] | 464 | extern const GrVertexAttrib gAARectVertexAttribs[] = { |
| 465 | { kVec2f_GrVertexAttribType, 0, kPosition_GrVertexAttribBinding }, |
| 466 | { kVec4f_GrVertexAttribType, sizeof(GrPoint), kEffect_GrVertexAttribBinding }, |
| 467 | { kVec2f_GrVertexAttribType, 3*sizeof(GrPoint), kEffect_GrVertexAttribBinding } |
| 468 | }; |
| 469 | |
robertphillips@google.com | b19cb7f | 2013-05-02 15:37:20 +0000 | [diff] [blame] | 470 | // Axis Aligned |
| 471 | struct AARectVertex { |
| 472 | GrPoint fPos; |
| 473 | GrPoint fOffset; |
| 474 | GrPoint fWidthHeight; |
| 475 | }; |
| 476 | |
| 477 | // Axis Aligned |
| 478 | extern const GrVertexAttrib gAAAARectVertexAttribs[] = { |
| 479 | { kVec2f_GrVertexAttribType, 0, kPosition_GrVertexAttribBinding }, |
| 480 | { kVec4f_GrVertexAttribType, sizeof(GrPoint), kEffect_GrVertexAttribBinding }, |
| 481 | }; |
| 482 | |
robertphillips@google.com | 4290330 | 2013-04-20 12:26:07 +0000 | [diff] [blame] | 483 | }; |
robertphillips@google.com | df3695e | 2013-04-09 14:01:44 +0000 | [diff] [blame] | 484 | |
| 485 | void GrAARectRenderer::shaderFillAARect(GrGpu* gpu, |
| 486 | GrDrawTarget* target, |
| 487 | const GrRect& rect, |
| 488 | const SkMatrix& combinedMatrix, |
robertphillips@google.com | b19cb7f | 2013-05-02 15:37:20 +0000 | [diff] [blame] | 489 | const GrRect& devRect) { |
robertphillips@google.com | df3695e | 2013-04-09 14:01:44 +0000 | [diff] [blame] | 490 | GrDrawState* drawState = target->drawState(); |
| 491 | |
| 492 | SkPoint center = SkPoint::Make(rect.centerX(), rect.centerY()); |
| 493 | combinedMatrix.mapPoints(¢er, 1); |
| 494 | |
| 495 | // compute transformed (0, 1) vector |
| 496 | SkVector dir = { combinedMatrix[SkMatrix::kMSkewX], combinedMatrix[SkMatrix::kMScaleY] }; |
| 497 | dir.normalize(); |
| 498 | |
| 499 | // compute transformed (width, 0) and (0, height) vectors |
| 500 | SkVector vec[2] = { |
robertphillips@google.com | b19cb7f | 2013-05-02 15:37:20 +0000 | [diff] [blame] | 501 | { combinedMatrix[SkMatrix::kMScaleX], combinedMatrix[SkMatrix::kMSkewY] }, |
| 502 | { combinedMatrix[SkMatrix::kMSkewX], combinedMatrix[SkMatrix::kMScaleY] } |
robertphillips@google.com | df3695e | 2013-04-09 14:01:44 +0000 | [diff] [blame] | 503 | }; |
| 504 | |
robertphillips@google.com | b19cb7f | 2013-05-02 15:37:20 +0000 | [diff] [blame] | 505 | SkScalar newWidth = SkScalarHalf(rect.width() * vec[0].length()) + SK_ScalarHalf; |
| 506 | SkScalar newHeight = SkScalarHalf(rect.height() * vec[1].length()) + SK_ScalarHalf; |
robertphillips@google.com | 4290330 | 2013-04-20 12:26:07 +0000 | [diff] [blame] | 507 | drawState->setVertexAttribs<gAARectVertexAttribs>(SK_ARRAY_COUNT(gAARectVertexAttribs)); |
robertphillips@google.com | df3695e | 2013-04-09 14:01:44 +0000 | [diff] [blame] | 508 | GrAssert(sizeof(RectVertex) == drawState->getVertexSize()); |
| 509 | |
| 510 | GrDrawTarget::AutoReleaseGeometry geo(target, 4, 0); |
| 511 | if (!geo.succeeded()) { |
| 512 | GrPrintf("Failed to get space for vertices!\n"); |
| 513 | return; |
| 514 | } |
| 515 | |
| 516 | RectVertex* verts = reinterpret_cast<RectVertex*>(geo.vertices()); |
| 517 | |
| 518 | enum { |
| 519 | // the edge effects share this stage with glyph rendering |
| 520 | // (kGlyphMaskStage in GrTextContext) && SW path rendering |
| 521 | // (kPathMaskStage in GrSWMaskHelper) |
| 522 | kEdgeEffectStage = GrPaint::kTotalStages, |
| 523 | }; |
| 524 | |
| 525 | GrEffectRef* effect = GrRectEffect::Create(); |
| 526 | static const int kRectAttrIndex = 1; |
| 527 | static const int kWidthIndex = 2; |
| 528 | drawState->setEffect(kEdgeEffectStage, effect, kRectAttrIndex, kWidthIndex)->unref(); |
| 529 | |
| 530 | for (int i = 0; i < 4; ++i) { |
| 531 | verts[i].fCenter = center; |
| 532 | verts[i].fDir = dir; |
| 533 | verts[i].fWidthHeight.fX = newWidth; |
| 534 | verts[i].fWidthHeight.fY = newHeight; |
| 535 | } |
| 536 | |
| 537 | SkRect devBounds = { |
| 538 | devRect.fLeft - SK_ScalarHalf, |
| 539 | devRect.fTop - SK_ScalarHalf, |
| 540 | devRect.fRight + SK_ScalarHalf, |
| 541 | devRect.fBottom + SK_ScalarHalf |
| 542 | }; |
| 543 | |
| 544 | verts[0].fPos = SkPoint::Make(devBounds.fLeft, devBounds.fTop); |
| 545 | verts[1].fPos = SkPoint::Make(devBounds.fLeft, devBounds.fBottom); |
| 546 | verts[2].fPos = SkPoint::Make(devBounds.fRight, devBounds.fBottom); |
| 547 | verts[3].fPos = SkPoint::Make(devBounds.fRight, devBounds.fTop); |
| 548 | |
| 549 | target->setIndexSourceToBuffer(gpu->getContext()->getQuadIndexBuffer()); |
| 550 | target->drawIndexedInstances(kTriangles_GrPrimitiveType, 1, 4, 6); |
| 551 | target->resetIndexSource(); |
| 552 | } |
| 553 | |
robertphillips@google.com | b19cb7f | 2013-05-02 15:37:20 +0000 | [diff] [blame] | 554 | void GrAARectRenderer::shaderFillAlignedAARect(GrGpu* gpu, |
| 555 | GrDrawTarget* target, |
| 556 | const GrRect& rect, |
| 557 | const SkMatrix& combinedMatrix, |
| 558 | const GrRect& devRect) { |
| 559 | GrDrawState* drawState = target->drawState(); |
| 560 | SkASSERT(combinedMatrix.rectStaysRect()); |
| 561 | |
| 562 | drawState->setVertexAttribs<gAAAARectVertexAttribs>(SK_ARRAY_COUNT(gAAAARectVertexAttribs)); |
| 563 | GrAssert(sizeof(AARectVertex) == drawState->getVertexSize()); |
| 564 | |
| 565 | GrDrawTarget::AutoReleaseGeometry geo(target, 4, 0); |
| 566 | if (!geo.succeeded()) { |
| 567 | GrPrintf("Failed to get space for vertices!\n"); |
| 568 | return; |
| 569 | } |
| 570 | |
| 571 | AARectVertex* verts = reinterpret_cast<AARectVertex*>(geo.vertices()); |
| 572 | |
| 573 | enum { |
| 574 | // the edge effects share this stage with glyph rendering |
| 575 | // (kGlyphMaskStage in GrTextContext) && SW path rendering |
| 576 | // (kPathMaskStage in GrSWMaskHelper) |
| 577 | kEdgeEffectStage = GrPaint::kTotalStages, |
| 578 | }; |
| 579 | |
| 580 | GrEffectRef* effect = GrAlignedRectEffect::Create(); |
| 581 | static const int kOffsetIndex = 1; |
| 582 | drawState->setEffect(kEdgeEffectStage, effect, kOffsetIndex)->unref(); |
| 583 | |
| 584 | SkRect devBounds = { |
| 585 | devRect.fLeft - SK_ScalarHalf, |
| 586 | devRect.fTop - SK_ScalarHalf, |
| 587 | devRect.fRight + SK_ScalarHalf, |
| 588 | devRect.fBottom + SK_ScalarHalf |
| 589 | }; |
| 590 | |
| 591 | GrPoint widthHeight = { |
| 592 | SkScalarHalf(devRect.width()) + SK_ScalarHalf, |
| 593 | SkScalarHalf(devRect.height()) + SK_ScalarHalf |
| 594 | }; |
| 595 | |
| 596 | verts[0].fPos = SkPoint::Make(devBounds.fLeft, devBounds.fTop); |
| 597 | verts[0].fOffset = SkPoint::Make(-widthHeight.fX, -widthHeight.fY); |
| 598 | verts[0].fWidthHeight = widthHeight; |
| 599 | |
| 600 | verts[1].fPos = SkPoint::Make(devBounds.fLeft, devBounds.fBottom); |
| 601 | verts[1].fOffset = SkPoint::Make(-widthHeight.fX, widthHeight.fY); |
| 602 | verts[1].fWidthHeight = widthHeight; |
| 603 | |
| 604 | verts[2].fPos = SkPoint::Make(devBounds.fRight, devBounds.fBottom); |
| 605 | verts[2].fOffset = widthHeight; |
| 606 | verts[2].fWidthHeight = widthHeight; |
| 607 | |
| 608 | verts[3].fPos = SkPoint::Make(devBounds.fRight, devBounds.fTop); |
| 609 | verts[3].fOffset = SkPoint::Make(widthHeight.fX, -widthHeight.fY); |
| 610 | verts[3].fWidthHeight = widthHeight; |
| 611 | |
| 612 | target->setIndexSourceToBuffer(gpu->getContext()->getQuadIndexBuffer()); |
| 613 | target->drawIndexedInstances(kTriangles_GrPrimitiveType, 1, 4, 6); |
| 614 | target->resetIndexSource(); |
| 615 | } |
| 616 | |
robertphillips@google.com | f6747b0 | 2012-06-12 00:32:28 +0000 | [diff] [blame] | 617 | void GrAARectRenderer::strokeAARect(GrGpu* gpu, |
bsalomon@google.com | e7249bd | 2012-08-16 15:28:54 +0000 | [diff] [blame] | 618 | GrDrawTarget* target, |
| 619 | const GrRect& devRect, |
| 620 | const GrVec& devStrokeSize, |
| 621 | bool useVertexCoverage) { |
jvanverth@google.com | 9b855c7 | 2013-03-01 18:21:22 +0000 | [diff] [blame] | 622 | GrDrawState* drawState = target->drawState(); |
| 623 | |
bsalomon@google.com | 8171288 | 2012-11-01 17:12:34 +0000 | [diff] [blame] | 624 | const SkScalar& dx = devStrokeSize.fX; |
| 625 | const SkScalar& dy = devStrokeSize.fY; |
| 626 | const SkScalar rx = SkScalarMul(dx, SK_ScalarHalf); |
| 627 | const SkScalar ry = SkScalarMul(dy, SK_ScalarHalf); |
robertphillips@google.com | f6747b0 | 2012-06-12 00:32:28 +0000 | [diff] [blame] | 628 | |
bsalomon@google.com | 8171288 | 2012-11-01 17:12:34 +0000 | [diff] [blame] | 629 | SkScalar spare; |
robertphillips@google.com | f6747b0 | 2012-06-12 00:32:28 +0000 | [diff] [blame] | 630 | { |
bsalomon@google.com | 8171288 | 2012-11-01 17:12:34 +0000 | [diff] [blame] | 631 | SkScalar w = devRect.width() - dx; |
| 632 | SkScalar h = devRect.height() - dy; |
robertphillips@google.com | f6747b0 | 2012-06-12 00:32:28 +0000 | [diff] [blame] | 633 | spare = GrMin(w, h); |
| 634 | } |
| 635 | |
| 636 | if (spare <= 0) { |
| 637 | GrRect r(devRect); |
| 638 | r.inset(-rx, -ry); |
robertphillips@google.com | b19cb7f | 2013-05-02 15:37:20 +0000 | [diff] [blame] | 639 | this->fillAARect(gpu, target, r, SkMatrix::I(), r, useVertexCoverage); |
robertphillips@google.com | f6747b0 | 2012-06-12 00:32:28 +0000 | [diff] [blame] | 640 | return; |
| 641 | } |
skia.committer@gmail.com | f140f18 | 2013-03-02 07:01:56 +0000 | [diff] [blame] | 642 | |
robertphillips@google.com | 4290330 | 2013-04-20 12:26:07 +0000 | [diff] [blame] | 643 | set_aa_rect_vertex_attributes(drawState, useVertexCoverage); |
robertphillips@google.com | f6747b0 | 2012-06-12 00:32:28 +0000 | [diff] [blame] | 644 | |
jvanverth@google.com | b75b0a0 | 2013-02-05 20:33:30 +0000 | [diff] [blame] | 645 | GrDrawTarget::AutoReleaseGeometry geo(target, 16, 0); |
robertphillips@google.com | f6747b0 | 2012-06-12 00:32:28 +0000 | [diff] [blame] | 646 | if (!geo.succeeded()) { |
| 647 | GrPrintf("Failed to get space for vertices!\n"); |
| 648 | return; |
| 649 | } |
| 650 | GrIndexBuffer* indexBuffer = this->aaStrokeRectIndexBuffer(gpu); |
| 651 | if (NULL == indexBuffer) { |
| 652 | GrPrintf("Failed to create index buffer!\n"); |
| 653 | return; |
| 654 | } |
| 655 | |
| 656 | intptr_t verts = reinterpret_cast<intptr_t>(geo.vertices()); |
jvanverth@google.com | 9b855c7 | 2013-03-01 18:21:22 +0000 | [diff] [blame] | 657 | size_t vsize = drawState->getVertexSize(); |
| 658 | GrAssert(sizeof(GrPoint) + sizeof(GrColor) == vsize); |
robertphillips@google.com | f6747b0 | 2012-06-12 00:32:28 +0000 | [diff] [blame] | 659 | |
bsalomon@google.com | e7249bd | 2012-08-16 15:28:54 +0000 | [diff] [blame] | 660 | // We create vertices for four nested rectangles. There are two ramps from 0 to full |
| 661 | // coverage, one on the exterior of the stroke and the other on the interior. |
| 662 | // The following pointers refer to the four rects, from outermost to innermost. |
robertphillips@google.com | f6747b0 | 2012-06-12 00:32:28 +0000 | [diff] [blame] | 663 | GrPoint* fan0Pos = reinterpret_cast<GrPoint*>(verts); |
| 664 | GrPoint* fan1Pos = reinterpret_cast<GrPoint*>(verts + 4 * vsize); |
| 665 | GrPoint* fan2Pos = reinterpret_cast<GrPoint*>(verts + 8 * vsize); |
| 666 | GrPoint* fan3Pos = reinterpret_cast<GrPoint*>(verts + 12 * vsize); |
| 667 | |
robertphillips@google.com | ca47aae | 2012-12-12 15:58:25 +0000 | [diff] [blame] | 668 | set_inset_fan(fan0Pos, vsize, devRect, |
| 669 | -rx - SK_ScalarHalf, -ry - SK_ScalarHalf); |
| 670 | set_inset_fan(fan1Pos, vsize, devRect, |
| 671 | -rx + SK_ScalarHalf, -ry + SK_ScalarHalf); |
| 672 | set_inset_fan(fan2Pos, vsize, devRect, |
| 673 | rx - SK_ScalarHalf, ry - SK_ScalarHalf); |
| 674 | set_inset_fan(fan3Pos, vsize, devRect, |
| 675 | rx + SK_ScalarHalf, ry + SK_ScalarHalf); |
robertphillips@google.com | f6747b0 | 2012-06-12 00:32:28 +0000 | [diff] [blame] | 676 | |
bsalomon@google.com | e7249bd | 2012-08-16 15:28:54 +0000 | [diff] [blame] | 677 | // The outermost rect has 0 coverage |
robertphillips@google.com | f6747b0 | 2012-06-12 00:32:28 +0000 | [diff] [blame] | 678 | verts += sizeof(GrPoint); |
| 679 | for (int i = 0; i < 4; ++i) { |
| 680 | *reinterpret_cast<GrColor*>(verts + i * vsize) = 0; |
| 681 | } |
| 682 | |
bsalomon@google.com | e7249bd | 2012-08-16 15:28:54 +0000 | [diff] [blame] | 683 | // The inner two rects have full coverage |
robertphillips@google.com | f6747b0 | 2012-06-12 00:32:28 +0000 | [diff] [blame] | 684 | GrColor innerColor; |
| 685 | if (useVertexCoverage) { |
| 686 | innerColor = 0xffffffff; |
| 687 | } else { |
| 688 | innerColor = target->getDrawState().getColor(); |
| 689 | } |
| 690 | verts += 4 * vsize; |
| 691 | for (int i = 0; i < 8; ++i) { |
| 692 | *reinterpret_cast<GrColor*>(verts + i * vsize) = innerColor; |
| 693 | } |
| 694 | |
bsalomon@google.com | e7249bd | 2012-08-16 15:28:54 +0000 | [diff] [blame] | 695 | // The innermost rect has full coverage |
robertphillips@google.com | f6747b0 | 2012-06-12 00:32:28 +0000 | [diff] [blame] | 696 | verts += 8 * vsize; |
bsalomon@google.com | e7249bd | 2012-08-16 15:28:54 +0000 | [diff] [blame] | 697 | for (int i = 0; i < 4; ++i) { |
robertphillips@google.com | f6747b0 | 2012-06-12 00:32:28 +0000 | [diff] [blame] | 698 | *reinterpret_cast<GrColor*>(verts + i * vsize) = 0; |
| 699 | } |
| 700 | |
| 701 | target->setIndexSourceToBuffer(indexBuffer); |
| 702 | target->drawIndexed(kTriangles_GrPrimitiveType, |
| 703 | 0, 0, 16, aaStrokeRectIndexCount()); |
| 704 | } |