junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 1 | /* |
| 2 | Copyright 2011 Google Inc. |
| 3 | |
| 4 | Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | you may not use this file except in compliance with the License. |
| 6 | You may obtain a copy of the License at |
| 7 | |
| 8 | http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | |
| 10 | Unless required by applicable law or agreed to in writing, software |
| 11 | distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | See the License for the specific language governing permissions and |
| 14 | limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #include "GrGLProgram.h" |
| 18 | |
| 19 | #include "GrBinHashKey.h" |
| 20 | #include "GrGLConfig.h" |
| 21 | #include "GrGLEffect.h" |
| 22 | #include "GrMemory.h" |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 23 | |
Scroggo | 97c88c2 | 2011-05-11 14:05:25 +0000 | [diff] [blame] | 24 | #include "SkXfermode.h" |
| 25 | |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 26 | namespace { |
| 27 | |
| 28 | const char* GrPrecision() { |
| 29 | if (GR_GL_SUPPORT_ES2) { |
| 30 | return "mediump"; |
| 31 | } else { |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 32 | return " "; |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 33 | } |
| 34 | } |
| 35 | |
| 36 | const char* GrShaderPrecision() { |
| 37 | if (GR_GL_SUPPORT_ES2) { |
| 38 | return "precision mediump float;\n"; |
| 39 | } else { |
| 40 | return ""; |
| 41 | } |
| 42 | } |
| 43 | |
| 44 | } // namespace |
| 45 | |
bsalomon@google.com | 6aef1fb | 2011-05-05 12:33:22 +0000 | [diff] [blame] | 46 | #define PRINT_SHADERS 0 |
| 47 | |
bsalomon@google.com | 4be283f | 2011-04-19 21:15:09 +0000 | [diff] [blame] | 48 | #if GR_GL_ATTRIBUTE_MATRICES |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 49 | #define VIEW_MATRIX_NAME "aViewM" |
| 50 | #else |
| 51 | #define VIEW_MATRIX_NAME "uViewM" |
| 52 | #endif |
| 53 | |
| 54 | #define POS_ATTR_NAME "aPosition" |
| 55 | #define COL_ATTR_NAME "aColor" |
bsalomon@google.com | 4be283f | 2011-04-19 21:15:09 +0000 | [diff] [blame] | 56 | #define COL_UNI_NAME "uColor" |
senorblanco@chromium.org | 92e0f22 | 2011-05-12 15:49:15 +0000 | [diff] [blame] | 57 | #define EDGES_UNI_NAME "uEdges" |
Scroggo | 97c88c2 | 2011-05-11 14:05:25 +0000 | [diff] [blame] | 58 | #define COL_FILTER_UNI_NAME "uColorFilter" |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 59 | |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 60 | static inline void tex_attr_name(int coordIdx, GrStringBuilder* s) { |
| 61 | *s = "aTexCoord"; |
bsalomon@google.com | fc29629 | 2011-05-06 13:53:47 +0000 | [diff] [blame] | 62 | s->appendS32(coordIdx); |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 63 | } |
| 64 | |
| 65 | static inline const char* float_vector_type(int count) { |
| 66 | static const char* FLOAT_VECS[] = {"ERROR", "float", "vec2", "vec3", "vec4"}; |
| 67 | GrAssert(count >= 1 && count < (int)GR_ARRAY_COUNT(FLOAT_VECS)); |
| 68 | return FLOAT_VECS[count]; |
| 69 | } |
| 70 | |
| 71 | static inline const char* vector_homog_coord(int count) { |
| 72 | static const char* HOMOGS[] = {"ERROR", "", ".y", ".z", ".w"}; |
| 73 | GrAssert(count >= 1 && count < (int)GR_ARRAY_COUNT(HOMOGS)); |
| 74 | return HOMOGS[count]; |
| 75 | } |
| 76 | |
| 77 | static inline const char* vector_nonhomog_coords(int count) { |
| 78 | static const char* NONHOMOGS[] = {"ERROR", "", ".x", ".xy", ".xyz"}; |
| 79 | GrAssert(count >= 1 && count < (int)GR_ARRAY_COUNT(NONHOMOGS)); |
| 80 | return NONHOMOGS[count]; |
| 81 | } |
| 82 | |
| 83 | static inline const char* vector_all_coords(int count) { |
| 84 | static const char* ALL[] = {"ERROR", "", ".xy", ".xyz", ".xyzw"}; |
| 85 | GrAssert(count >= 1 && count < (int)GR_ARRAY_COUNT(ALL)); |
| 86 | return ALL[count]; |
| 87 | } |
| 88 | |
| 89 | static void tex_matrix_name(int stage, GrStringBuilder* s) { |
bsalomon@google.com | 4be283f | 2011-04-19 21:15:09 +0000 | [diff] [blame] | 90 | #if GR_GL_ATTRIBUTE_MATRICES |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 91 | *s = "aTexM"; |
| 92 | #else |
| 93 | *s = "uTexM"; |
| 94 | #endif |
bsalomon@google.com | fc29629 | 2011-05-06 13:53:47 +0000 | [diff] [blame] | 95 | s->appendS32(stage); |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 96 | } |
| 97 | |
bsalomon@google.com | 6aef1fb | 2011-05-05 12:33:22 +0000 | [diff] [blame] | 98 | static void normalized_texel_size_name(int stage, GrStringBuilder* s) { |
| 99 | *s = "uTexelSize"; |
bsalomon@google.com | fc29629 | 2011-05-06 13:53:47 +0000 | [diff] [blame] | 100 | s->appendS32(stage); |
bsalomon@google.com | 6aef1fb | 2011-05-05 12:33:22 +0000 | [diff] [blame] | 101 | } |
| 102 | |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 103 | static void sampler_name(int stage, GrStringBuilder* s) { |
| 104 | *s = "uSampler"; |
bsalomon@google.com | fc29629 | 2011-05-06 13:53:47 +0000 | [diff] [blame] | 105 | s->appendS32(stage); |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 106 | } |
| 107 | |
| 108 | static void stage_varying_name(int stage, GrStringBuilder* s) { |
| 109 | *s = "vStage"; |
bsalomon@google.com | fc29629 | 2011-05-06 13:53:47 +0000 | [diff] [blame] | 110 | s->appendS32(stage); |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 111 | } |
| 112 | |
| 113 | static void radial2_param_name(int stage, GrStringBuilder* s) { |
| 114 | *s = "uRadial2Params"; |
bsalomon@google.com | fc29629 | 2011-05-06 13:53:47 +0000 | [diff] [blame] | 115 | s->appendS32(stage); |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 116 | } |
| 117 | |
| 118 | static void radial2_varying_name(int stage, GrStringBuilder* s) { |
| 119 | *s = "vB"; |
bsalomon@google.com | fc29629 | 2011-05-06 13:53:47 +0000 | [diff] [blame] | 120 | s->appendS32(stage); |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 121 | } |
| 122 | |
junov@google.com | 6acc9b3 | 2011-05-16 18:32:07 +0000 | [diff] [blame^] | 123 | static void tex_domain_name(int stage, GrStringBuilder* s) { |
| 124 | *s = "uTexDom"; |
| 125 | s->appendS32(stage); |
| 126 | } |
| 127 | |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 128 | GrGLProgram::GrGLProgram() { |
| 129 | for(int stage = 0; stage < GrDrawTarget::kNumStages; ++stage) { |
| 130 | fStageEffects[stage] = NULL; |
| 131 | } |
| 132 | } |
| 133 | |
| 134 | GrGLProgram::~GrGLProgram() { |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 135 | } |
| 136 | |
| 137 | void GrGLProgram::buildKey(GrBinHashKeyBuilder& key) const { |
| 138 | // Add stage configuration to the key |
| 139 | key.keyData(reinterpret_cast<const uint8_t*>(&fProgramDesc), sizeof(ProgramDesc)); |
| 140 | |
| 141 | for(int stage = 0; stage < GrDrawTarget::kNumStages; ++stage) { |
| 142 | // First pass: count effects and write the count to the key. |
| 143 | // This may seem like we are adding redundant data to the |
| 144 | // key, but in ensures the one key cannot be a prefix of |
| 145 | // another key, or identical to the key of a different program. |
| 146 | GrGLEffect* currentEffect = fStageEffects[stage]; |
| 147 | uint8_t effectCount = 0; |
| 148 | while (currentEffect) { |
| 149 | GrAssert(effectCount < 255); // overflow detection |
| 150 | ++effectCount; |
| 151 | currentEffect = currentEffect->nextEffect(); |
| 152 | } |
| 153 | key.keyData(reinterpret_cast<const uint8_t*>(&effectCount), sizeof(uint8_t)); |
| 154 | |
| 155 | // Second pass: continue building key using the effects |
| 156 | currentEffect = fStageEffects[stage]; |
| 157 | while (currentEffect) { |
| 158 | fStageEffects[stage]->buildKey(key); |
| 159 | } |
| 160 | } |
| 161 | } |
| 162 | |
| 163 | bool GrGLProgram::doGLSetup(GrPrimitiveType type, |
| 164 | GrGLProgram::CachedData* programData) const { |
| 165 | for (int stage = 0; stage < GrDrawTarget::kNumStages; ++stage) { |
| 166 | GrGLEffect* effect = fStageEffects[stage]; |
| 167 | if (effect) { |
| 168 | if (!effect->doGLSetup(type, programData->fProgramID)) { |
| 169 | return false; |
| 170 | } |
| 171 | } |
| 172 | } |
| 173 | |
| 174 | return true; |
| 175 | } |
| 176 | |
| 177 | void GrGLProgram::doGLPost() const { |
| 178 | for (int stage = 0; stage < GrDrawTarget::kNumStages; ++stage) { |
| 179 | GrGLEffect* effect = fStageEffects[stage]; |
| 180 | if (effect) { |
| 181 | effect->doGLPost(); |
| 182 | } |
| 183 | } |
| 184 | } |
| 185 | |
Scroggo | 97c88c2 | 2011-05-11 14:05:25 +0000 | [diff] [blame] | 186 | /** |
| 187 | * Create a text coefficient to be used in fragment shader code. |
| 188 | */ |
Scroggo | 5d75740 | 2011-05-12 18:27:05 +0000 | [diff] [blame] | 189 | static void coefficientString(GrStringBuilder* str, SkXfermode::Coeff coeff, |
Scroggo | 97c88c2 | 2011-05-11 14:05:25 +0000 | [diff] [blame] | 190 | const char* src, const char* dst) { |
| 191 | switch (coeff) { |
| 192 | case SkXfermode::kZero_Coeff: /** 0 */ |
Scroggo | 5d75740 | 2011-05-12 18:27:05 +0000 | [diff] [blame] | 193 | *str = "0.0"; |
Scroggo | 97c88c2 | 2011-05-11 14:05:25 +0000 | [diff] [blame] | 194 | break; |
| 195 | case SkXfermode::kOne_Coeff: /** 1 */ |
Scroggo | 5d75740 | 2011-05-12 18:27:05 +0000 | [diff] [blame] | 196 | *str = "1.0"; |
Scroggo | 97c88c2 | 2011-05-11 14:05:25 +0000 | [diff] [blame] | 197 | break; |
| 198 | case SkXfermode::kSA_Coeff: /** src alpha */ |
Scroggo | 5d75740 | 2011-05-12 18:27:05 +0000 | [diff] [blame] | 199 | str->appendf("%s.a", src); |
Scroggo | 97c88c2 | 2011-05-11 14:05:25 +0000 | [diff] [blame] | 200 | break; |
| 201 | case SkXfermode::kISA_Coeff: /** inverse src alpha (i.e. 1 - sa) */ |
Scroggo | 5d75740 | 2011-05-12 18:27:05 +0000 | [diff] [blame] | 202 | str->appendf("(1.0 - %s.a)", src); |
Scroggo | 97c88c2 | 2011-05-11 14:05:25 +0000 | [diff] [blame] | 203 | break; |
| 204 | case SkXfermode::kDA_Coeff: /** dst alpha */ |
Scroggo | 5d75740 | 2011-05-12 18:27:05 +0000 | [diff] [blame] | 205 | str->appendf("%s.a", dst); |
Scroggo | 97c88c2 | 2011-05-11 14:05:25 +0000 | [diff] [blame] | 206 | break; |
| 207 | case SkXfermode::kIDA_Coeff: /** inverse dst alpha (i.e. 1 - da) */ |
Scroggo | 5d75740 | 2011-05-12 18:27:05 +0000 | [diff] [blame] | 208 | str->appendf("(1.0 - %s.a)", dst); |
Scroggo | 97c88c2 | 2011-05-11 14:05:25 +0000 | [diff] [blame] | 209 | break; |
| 210 | case SkXfermode::kSC_Coeff: |
Scroggo | 5d75740 | 2011-05-12 18:27:05 +0000 | [diff] [blame] | 211 | str->append(src); |
Scroggo | 97c88c2 | 2011-05-11 14:05:25 +0000 | [diff] [blame] | 212 | break; |
| 213 | default: |
| 214 | break; |
| 215 | } |
| 216 | } |
| 217 | |
| 218 | /** |
| 219 | * Adds a line to the fragment shader code which modifies the color by |
| 220 | * the specified color filter. |
| 221 | */ |
Scroggo | 5d75740 | 2011-05-12 18:27:05 +0000 | [diff] [blame] | 222 | static void addColorFilter(GrStringBuilder* FSCode, const char * outputVar, |
Scroggo | 97c88c2 | 2011-05-11 14:05:25 +0000 | [diff] [blame] | 223 | SkXfermode::Mode colorFilterXfermode, const char* dstColor) { |
| 224 | SkXfermode::Coeff srcCoeff, dstCoeff; |
Scroggo | a8a57be | 2011-05-11 18:16:56 +0000 | [diff] [blame] | 225 | SkDEBUGCODE(bool success =) |
| 226 | SkXfermode::ModeAsCoeff(colorFilterXfermode, &srcCoeff, &dstCoeff); |
Scroggo | 97c88c2 | 2011-05-11 14:05:25 +0000 | [diff] [blame] | 227 | // We currently do not handle modes that cannot be represented as |
| 228 | // coefficients. |
| 229 | GrAssert(success); |
| 230 | GrStringBuilder srcCoeffStr, dstCoeffStr; |
Scroggo | 5d75740 | 2011-05-12 18:27:05 +0000 | [diff] [blame] | 231 | coefficientString(&srcCoeffStr, srcCoeff, COL_FILTER_UNI_NAME, dstColor); |
| 232 | coefficientString(&dstCoeffStr, dstCoeff, COL_FILTER_UNI_NAME, dstColor); |
| 233 | FSCode->appendf("\t%s = %s*%s + %s*%s;\n", outputVar, srcCoeffStr.c_str(), |
Scroggo | 97c88c2 | 2011-05-11 14:05:25 +0000 | [diff] [blame] | 234 | COL_FILTER_UNI_NAME, dstCoeffStr.c_str(), dstColor); |
| 235 | } |
| 236 | |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 237 | bool GrGLProgram::genProgram(GrGLProgram::CachedData* programData) const { |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 238 | |
| 239 | ShaderCodeSegments segments; |
| 240 | const uint32_t& layout = fProgramDesc.fVertexLayout; |
| 241 | |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 242 | programData->fUniLocations.reset(); |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 243 | |
bsalomon@google.com | 4be283f | 2011-04-19 21:15:09 +0000 | [diff] [blame] | 244 | #if GR_GL_ATTRIBUTE_MATRICES |
| 245 | segments.fVSAttrs += "attribute mat3 " VIEW_MATRIX_NAME ";\n"; |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 246 | programData->fUniLocations.fViewMatrixUni = kSetAsAttribute; |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 247 | #else |
bsalomon@google.com | 4be283f | 2011-04-19 21:15:09 +0000 | [diff] [blame] | 248 | segments.fVSUnis += "uniform mat3 " VIEW_MATRIX_NAME ";\n"; |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 249 | programData->fUniLocations.fViewMatrixUni = kUseUniform; |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 250 | #endif |
| 251 | segments.fVSAttrs += "attribute vec2 " POS_ATTR_NAME ";\n"; |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 252 | |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 253 | segments.fVSCode.append( |
| 254 | "void main() {\n" |
| 255 | "\tvec3 pos3 = " VIEW_MATRIX_NAME " * vec3("POS_ATTR_NAME", 1);\n" |
| 256 | "\tgl_Position = vec4(pos3.xy, 0, pos3.z);\n"); |
bsalomon@google.com | 4be283f | 2011-04-19 21:15:09 +0000 | [diff] [blame] | 257 | |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 258 | // incoming color to current stage being processed. |
| 259 | GrStringBuilder inColor; |
bsalomon@google.com | 4be283f | 2011-04-19 21:15:09 +0000 | [diff] [blame] | 260 | |
| 261 | switch (fProgramDesc.fColorType) { |
| 262 | case ProgramDesc::kAttribute_ColorType: |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 263 | segments.fVSAttrs.append( "attribute vec4 " COL_ATTR_NAME ";\n"); |
| 264 | segments.fVaryings.append("varying vec4 vColor;\n"); |
| 265 | segments.fVSCode.append( "\tvColor = " COL_ATTR_NAME ";\n"); |
bsalomon@google.com | 4be283f | 2011-04-19 21:15:09 +0000 | [diff] [blame] | 266 | inColor = "vColor"; |
| 267 | break; |
| 268 | case ProgramDesc::kUniform_ColorType: |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 269 | segments.fFSUnis.append( "uniform vec4 " COL_UNI_NAME ";\n"); |
| 270 | programData->fUniLocations.fColorUni = kUseUniform; |
bsalomon@google.com | 4be283f | 2011-04-19 21:15:09 +0000 | [diff] [blame] | 271 | inColor = COL_UNI_NAME; |
| 272 | break; |
| 273 | case ProgramDesc::kNone_ColorType: |
| 274 | inColor = ""; |
| 275 | break; |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 276 | } |
| 277 | |
senorblanco@chromium.org | 92e0f22 | 2011-05-12 15:49:15 +0000 | [diff] [blame] | 278 | if (fProgramDesc.fUsesEdgeAA) { |
| 279 | segments.fFSUnis.append("uniform vec3 " EDGES_UNI_NAME "[6];\n"); |
| 280 | } |
| 281 | |
bsalomon@google.com | 4be283f | 2011-04-19 21:15:09 +0000 | [diff] [blame] | 282 | if (fProgramDesc.fEmitsPointSize){ |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 283 | segments.fVSCode.append("\tgl_PointSize = 1.0;\n"); |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 284 | } |
bsalomon@google.com | 4be283f | 2011-04-19 21:15:09 +0000 | [diff] [blame] | 285 | |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 286 | segments.fFSCode.append("void main() {\n"); |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 287 | |
| 288 | // add texture coordinates that are used to the list of vertex attr decls |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 289 | GrStringBuilder texCoordAttrs[GrDrawTarget::kMaxTexCoords]; |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 290 | for (int t = 0; t < GrDrawTarget::kMaxTexCoords; ++t) { |
bsalomon@google.com | 6aef1fb | 2011-05-05 12:33:22 +0000 | [diff] [blame] | 291 | if (GrDrawTarget::VertexUsesTexCoordIdx(t, layout)) { |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 292 | tex_attr_name(t, texCoordAttrs + t); |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 293 | segments.fVSAttrs.appendf("attribute vec2 %s;\n", texCoordAttrs[t].c_str()); |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 294 | } |
| 295 | } |
| 296 | |
Scroggo | 97c88c2 | 2011-05-11 14:05:25 +0000 | [diff] [blame] | 297 | bool useColorFilter = |
| 298 | // The rest of transfer mode color filters have not been implemented |
| 299 | fProgramDesc.fColorFilterXfermode <= SkXfermode::kMultiply_Mode |
| 300 | // This mode has no effect. |
| 301 | && fProgramDesc.fColorFilterXfermode != SkXfermode::kDst_Mode; |
| 302 | bool onlyUseColorFilter = useColorFilter |
| 303 | && (fProgramDesc.fColorFilterXfermode == SkXfermode::kClear_Mode |
| 304 | || fProgramDesc.fColorFilterXfermode == SkXfermode::kSrc_Mode); |
| 305 | if (useColorFilter) { |
| 306 | // Set up a uniform for the color |
| 307 | segments.fFSUnis.append( "uniform vec4 " COL_FILTER_UNI_NAME ";\n"); |
| 308 | programData->fUniLocations.fColorFilterUni = kUseUniform; |
| 309 | } |
| 310 | |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 311 | // for each enabled stage figure out what the input coordinates are |
| 312 | // and count the number of stages in use. |
| 313 | const char* stageInCoords[GrDrawTarget::kNumStages]; |
| 314 | int numActiveStages = 0; |
| 315 | |
Scroggo | 97c88c2 | 2011-05-11 14:05:25 +0000 | [diff] [blame] | 316 | if (!onlyUseColorFilter) { |
| 317 | for (int s = 0; s < GrDrawTarget::kNumStages; ++s) { |
| 318 | if (fProgramDesc.fStages[s].fEnabled) { |
| 319 | if (GrDrawTarget::StagePosAsTexCoordVertexLayoutBit(s) & layout) { |
| 320 | stageInCoords[s] = POS_ATTR_NAME; |
| 321 | } else { |
| 322 | int tcIdx = GrDrawTarget::VertexTexCoordsForStage(s, layout); |
| 323 | // we better have input tex coordinates if stage is enabled. |
| 324 | GrAssert(tcIdx >= 0); |
| 325 | GrAssert(texCoordAttrs[tcIdx].size()); |
| 326 | stageInCoords[s] = texCoordAttrs[tcIdx].c_str(); |
| 327 | } |
| 328 | ++numActiveStages; |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 329 | } |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 330 | } |
| 331 | } |
| 332 | |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 333 | // if we have active stages string them together, feeding the output color |
| 334 | // of each to the next and generating code for each stage. |
| 335 | if (numActiveStages) { |
| 336 | int currActiveStage = 0; |
Scroggo | 97c88c2 | 2011-05-11 14:05:25 +0000 | [diff] [blame] | 337 | GrStringBuilder outColor; |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 338 | for (int s = 0; s < GrDrawTarget::kNumStages; ++s) { |
| 339 | if (fProgramDesc.fStages[s].fEnabled) { |
Scroggo | 97c88c2 | 2011-05-11 14:05:25 +0000 | [diff] [blame] | 340 | if (currActiveStage < (numActiveStages - 1) || useColorFilter) { |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 341 | outColor = "color"; |
bsalomon@google.com | fc29629 | 2011-05-06 13:53:47 +0000 | [diff] [blame] | 342 | outColor.appendS32(currActiveStage); |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 343 | segments.fFSCode.appendf("\tvec4 %s;\n", outColor.c_str()); |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 344 | } else { |
| 345 | outColor = "gl_FragColor"; |
| 346 | } |
| 347 | |
| 348 | genStageCode(s, |
| 349 | fProgramDesc.fStages[s], |
bsalomon@google.com | fc29629 | 2011-05-06 13:53:47 +0000 | [diff] [blame] | 350 | inColor.size() ? inColor.c_str() : NULL, |
| 351 | outColor.c_str(), |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 352 | stageInCoords[s], |
| 353 | &segments, |
| 354 | &programData->fUniLocations.fStages[s]); |
| 355 | ++currActiveStage; |
| 356 | inColor = outColor; |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 357 | } |
| 358 | } |
Scroggo | 97c88c2 | 2011-05-11 14:05:25 +0000 | [diff] [blame] | 359 | if (useColorFilter) { |
Scroggo | 5d75740 | 2011-05-12 18:27:05 +0000 | [diff] [blame] | 360 | addColorFilter(&segments.fFSCode, "gl_FragColor", |
Scroggo | 97c88c2 | 2011-05-11 14:05:25 +0000 | [diff] [blame] | 361 | fProgramDesc.fColorFilterXfermode, outColor.c_str()); |
| 362 | } |
| 363 | |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 364 | } else { |
senorblanco@chromium.org | 92e0f22 | 2011-05-12 15:49:15 +0000 | [diff] [blame] | 365 | if (fProgramDesc.fUsesEdgeAA) { |
| 366 | // FIXME: put the a's in a loop |
| 367 | segments.fFSCode.append( |
| 368 | "\tvec3 pos = vec3(gl_FragCoord.xy, 1);\n" |
| 369 | "\tfloat a0 = clamp(dot(uEdges[0], pos), 0.0, 1.0);\n" |
| 370 | "\tfloat a1 = clamp(dot(uEdges[1], pos), 0.0, 1.0);\n" |
| 371 | "\tfloat a2 = clamp(dot(uEdges[2], pos), 0.0, 1.0);\n" |
| 372 | "\tfloat a3 = clamp(dot(uEdges[3], pos), 0.0, 1.0);\n" |
| 373 | "\tfloat a4 = clamp(dot(uEdges[4], pos), 0.0, 1.0);\n" |
| 374 | "\tfloat a5 = clamp(dot(uEdges[5], pos), 0.0, 1.0);\n" |
| 375 | "\tfloat edgeAlpha = min(min(a0 * a1, a2 * a3), a4 * a5);\n"); |
| 376 | if (inColor.size()) { |
| 377 | inColor.append(" * edgeAlpha"); |
| 378 | } else { |
| 379 | inColor = "vec4(edgeAlpha)"; |
| 380 | } |
| 381 | } |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 382 | // we may not have any incoming color |
Scroggo | 97c88c2 | 2011-05-11 14:05:25 +0000 | [diff] [blame] | 383 | const char * incomingColor = (inColor.size() ? inColor.c_str() |
| 384 | : "vec4(1,1,1,1)"); |
| 385 | if (useColorFilter) { |
Scroggo | 5d75740 | 2011-05-12 18:27:05 +0000 | [diff] [blame] | 386 | addColorFilter(&segments.fFSCode, "gl_FragColor", |
Scroggo | 97c88c2 | 2011-05-11 14:05:25 +0000 | [diff] [blame] | 387 | fProgramDesc.fColorFilterXfermode, incomingColor); |
| 388 | } else { |
| 389 | segments.fFSCode.appendf("\tgl_FragColor = %s;\n", incomingColor); |
| 390 | } |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 391 | } |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 392 | segments.fVSCode.append("}\n"); |
| 393 | segments.fFSCode.append("}\n"); |
| 394 | |
| 395 | if (!CompileFSAndVS(segments, programData)) { |
| 396 | return false; |
| 397 | } |
| 398 | |
| 399 | if (!this->bindAttribsAndLinkProgram(texCoordAttrs, programData)) { |
| 400 | return false; |
| 401 | } |
| 402 | |
| 403 | this->getUniformLocationsAndInitCache(programData); |
| 404 | |
| 405 | return true; |
| 406 | } |
| 407 | |
| 408 | bool GrGLProgram::CompileFSAndVS(const ShaderCodeSegments& segments, |
| 409 | CachedData* programData) { |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 410 | |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 411 | const char* strings[4]; |
| 412 | int lengths[4]; |
| 413 | int stringCnt = 0; |
| 414 | |
bsalomon@google.com | fc29629 | 2011-05-06 13:53:47 +0000 | [diff] [blame] | 415 | if (segments.fVSUnis.size()) { |
| 416 | strings[stringCnt] = segments.fVSUnis.c_str(); |
| 417 | lengths[stringCnt] = segments.fVSUnis.size(); |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 418 | ++stringCnt; |
| 419 | } |
bsalomon@google.com | fc29629 | 2011-05-06 13:53:47 +0000 | [diff] [blame] | 420 | if (segments.fVSAttrs.size()) { |
| 421 | strings[stringCnt] = segments.fVSAttrs.c_str(); |
| 422 | lengths[stringCnt] = segments.fVSAttrs.size(); |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 423 | ++stringCnt; |
| 424 | } |
bsalomon@google.com | fc29629 | 2011-05-06 13:53:47 +0000 | [diff] [blame] | 425 | if (segments.fVaryings.size()) { |
| 426 | strings[stringCnt] = segments.fVaryings.c_str(); |
| 427 | lengths[stringCnt] = segments.fVaryings.size(); |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 428 | ++stringCnt; |
| 429 | } |
| 430 | |
bsalomon@google.com | fc29629 | 2011-05-06 13:53:47 +0000 | [diff] [blame] | 431 | GrAssert(segments.fVSCode.size()); |
| 432 | strings[stringCnt] = segments.fVSCode.c_str(); |
| 433 | lengths[stringCnt] = segments.fVSCode.size(); |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 434 | ++stringCnt; |
| 435 | |
| 436 | #if PRINT_SHADERS |
bsalomon@google.com | fc29629 | 2011-05-06 13:53:47 +0000 | [diff] [blame] | 437 | GrPrintf(segments.fVSUnis.c_str()); |
| 438 | GrPrintf(segments.fVSAttrs.c_str()); |
| 439 | GrPrintf(segments.fVaryings.c_str()); |
| 440 | GrPrintf(segments.fVSCode.c_str()); |
bsalomon@google.com | 6aef1fb | 2011-05-05 12:33:22 +0000 | [diff] [blame] | 441 | GrPrintf("\n"); |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 442 | #endif |
| 443 | programData->fVShaderID = CompileShader(GR_GL_VERTEX_SHADER, |
| 444 | stringCnt, |
| 445 | strings, |
| 446 | lengths); |
| 447 | |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 448 | if (!programData->fVShaderID) { |
| 449 | return false; |
| 450 | } |
| 451 | |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 452 | stringCnt = 0; |
| 453 | |
| 454 | if (strlen(GrShaderPrecision()) > 1) { |
| 455 | strings[stringCnt] = GrShaderPrecision(); |
| 456 | lengths[stringCnt] = strlen(GrShaderPrecision()); |
| 457 | ++stringCnt; |
| 458 | } |
bsalomon@google.com | fc29629 | 2011-05-06 13:53:47 +0000 | [diff] [blame] | 459 | if (segments.fFSUnis.size()) { |
| 460 | strings[stringCnt] = segments.fFSUnis.c_str(); |
| 461 | lengths[stringCnt] = segments.fFSUnis.size(); |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 462 | ++stringCnt; |
| 463 | } |
bsalomon@google.com | fc29629 | 2011-05-06 13:53:47 +0000 | [diff] [blame] | 464 | if (segments.fVaryings.size()) { |
| 465 | strings[stringCnt] = segments.fVaryings.c_str(); |
| 466 | lengths[stringCnt] = segments.fVaryings.size(); |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 467 | ++stringCnt; |
| 468 | } |
| 469 | |
bsalomon@google.com | fc29629 | 2011-05-06 13:53:47 +0000 | [diff] [blame] | 470 | GrAssert(segments.fFSCode.size()); |
| 471 | strings[stringCnt] = segments.fFSCode.c_str(); |
| 472 | lengths[stringCnt] = segments.fFSCode.size(); |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 473 | ++stringCnt; |
| 474 | |
| 475 | #if PRINT_SHADERS |
bsalomon@google.com | 6aef1fb | 2011-05-05 12:33:22 +0000 | [diff] [blame] | 476 | GrPrintf(GrShaderPrecision()); |
bsalomon@google.com | fc29629 | 2011-05-06 13:53:47 +0000 | [diff] [blame] | 477 | GrPrintf(segments.fFSUnis.c_str()); |
| 478 | GrPrintf(segments.fVaryings.c_str()); |
| 479 | GrPrintf(segments.fFSCode.c_str()); |
bsalomon@google.com | 6aef1fb | 2011-05-05 12:33:22 +0000 | [diff] [blame] | 480 | GrPrintf("\n"); |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 481 | #endif |
| 482 | programData->fFShaderID = CompileShader(GR_GL_FRAGMENT_SHADER, |
| 483 | stringCnt, |
| 484 | strings, |
| 485 | lengths); |
| 486 | |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 487 | if (!programData->fFShaderID) { |
| 488 | return false; |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 489 | } |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 490 | return true; |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 491 | } |
| 492 | |
| 493 | GrGLuint GrGLProgram::CompileShader(GrGLenum type, |
| 494 | int stringCnt, |
| 495 | const char** strings, |
| 496 | int* stringLengths) { |
| 497 | GrGLuint shader = GR_GL(CreateShader(type)); |
| 498 | if (0 == shader) { |
| 499 | return 0; |
| 500 | } |
| 501 | |
| 502 | GrGLint compiled = GR_GL_INIT_ZERO; |
| 503 | GR_GL(ShaderSource(shader, stringCnt, strings, stringLengths)); |
| 504 | GR_GL(CompileShader(shader)); |
| 505 | GR_GL(GetShaderiv(shader, GR_GL_COMPILE_STATUS, &compiled)); |
| 506 | |
| 507 | if (!compiled) { |
| 508 | GrGLint infoLen = GR_GL_INIT_ZERO; |
| 509 | GR_GL(GetShaderiv(shader, GR_GL_INFO_LOG_LENGTH, &infoLen)); |
| 510 | GrAutoMalloc log(sizeof(char)*(infoLen+1)); // outside if for debugger |
| 511 | if (infoLen > 0) { |
| 512 | GR_GL(GetShaderInfoLog(shader, infoLen+1, NULL, (char*)log.get())); |
| 513 | for (int i = 0; i < stringCnt; ++i) { |
| 514 | if (NULL == stringLengths || stringLengths[i] < 0) { |
| 515 | GrPrintf(strings[i]); |
| 516 | } else { |
| 517 | GrPrintf("%.*s", stringLengths[i], strings[i]); |
| 518 | } |
| 519 | } |
| 520 | GrPrintf("\n%s", log.get()); |
| 521 | } |
| 522 | GrAssert(!"Shader compilation failed!"); |
| 523 | GR_GL(DeleteShader(shader)); |
| 524 | return 0; |
| 525 | } |
| 526 | return shader; |
| 527 | } |
| 528 | |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 529 | bool GrGLProgram::bindAttribsAndLinkProgram(GrStringBuilder texCoordAttrNames[], |
| 530 | CachedData* programData) const { |
| 531 | programData->fProgramID = GR_GL(CreateProgram()); |
| 532 | if (!programData->fProgramID) { |
| 533 | return false; |
| 534 | } |
| 535 | const GrGLint& progID = programData->fProgramID; |
| 536 | |
| 537 | GR_GL(AttachShader(progID, programData->fVShaderID)); |
| 538 | GR_GL(AttachShader(progID, programData->fFShaderID)); |
| 539 | |
| 540 | // Bind the attrib locations to same values for all shaders |
| 541 | GR_GL(BindAttribLocation(progID, PositionAttributeIdx(), POS_ATTR_NAME)); |
| 542 | for (int t = 0; t < GrDrawTarget::kMaxTexCoords; ++t) { |
| 543 | if (texCoordAttrNames[t].size()) { |
| 544 | GR_GL(BindAttribLocation(progID, |
| 545 | TexCoordAttributeIdx(t), |
| 546 | texCoordAttrNames[t].c_str())); |
| 547 | } |
| 548 | } |
| 549 | |
| 550 | |
| 551 | if (kSetAsAttribute == programData->fUniLocations.fViewMatrixUni) { |
| 552 | GR_GL(BindAttribLocation(progID, |
| 553 | ViewMatrixAttributeIdx(), |
| 554 | VIEW_MATRIX_NAME)); |
| 555 | } |
| 556 | |
| 557 | for (int s = 0; s < GrDrawTarget::kNumStages; ++s) { |
bsalomon@google.com | 72b4fcb | 2011-05-09 20:47:34 +0000 | [diff] [blame] | 558 | const StageUniLocations& unis = programData->fUniLocations.fStages[s]; |
| 559 | if (kSetAsAttribute == unis.fTextureMatrixUni) { |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 560 | GrStringBuilder matName; |
| 561 | tex_matrix_name(s, &matName); |
| 562 | GR_GL(BindAttribLocation(progID, |
| 563 | TextureMatrixAttributeIdx(s), |
| 564 | matName.c_str())); |
| 565 | } |
| 566 | } |
| 567 | |
| 568 | |
| 569 | GR_GL(BindAttribLocation(progID, ColorAttributeIdx(), COL_ATTR_NAME)); |
| 570 | |
| 571 | GR_GL(LinkProgram(progID)); |
| 572 | |
| 573 | GrGLint linked = GR_GL_INIT_ZERO; |
| 574 | GR_GL(GetProgramiv(progID, GR_GL_LINK_STATUS, &linked)); |
| 575 | if (!linked) { |
| 576 | GrGLint infoLen = GR_GL_INIT_ZERO; |
| 577 | GR_GL(GetProgramiv(progID, GR_GL_INFO_LOG_LENGTH, &infoLen)); |
| 578 | GrAutoMalloc log(sizeof(char)*(infoLen+1)); // outside if for debugger |
| 579 | if (infoLen > 0) { |
| 580 | GR_GL(GetProgramInfoLog(progID, |
| 581 | infoLen+1, |
| 582 | NULL, |
| 583 | (char*)log.get())); |
| 584 | GrPrintf((char*)log.get()); |
| 585 | } |
| 586 | GrAssert(!"Error linking program"); |
| 587 | GR_GL(DeleteProgram(progID)); |
| 588 | programData->fProgramID = 0; |
| 589 | return false; |
| 590 | } |
| 591 | return true; |
| 592 | } |
| 593 | |
| 594 | void GrGLProgram::getUniformLocationsAndInitCache(CachedData* programData) const { |
| 595 | const GrGLint& progID = programData->fProgramID; |
| 596 | |
| 597 | if (kUseUniform == programData->fUniLocations.fViewMatrixUni) { |
| 598 | programData->fUniLocations.fViewMatrixUni = |
| 599 | GR_GL(GetUniformLocation(progID, VIEW_MATRIX_NAME)); |
| 600 | GrAssert(kUnusedUniform != programData->fUniLocations.fViewMatrixUni); |
| 601 | } |
| 602 | if (kUseUniform == programData->fUniLocations.fColorUni) { |
| 603 | programData->fUniLocations.fColorUni = |
| 604 | GR_GL(GetUniformLocation(progID, COL_UNI_NAME)); |
| 605 | GrAssert(kUnusedUniform != programData->fUniLocations.fColorUni); |
| 606 | } |
Scroggo | 97c88c2 | 2011-05-11 14:05:25 +0000 | [diff] [blame] | 607 | if (kUseUniform == programData->fUniLocations.fColorFilterUni) { |
| 608 | programData->fUniLocations.fColorFilterUni = |
| 609 | GR_GL(GetUniformLocation(progID, COL_FILTER_UNI_NAME)); |
| 610 | GrAssert(kUnusedUniform != programData->fUniLocations.fColorFilterUni); |
| 611 | } |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 612 | |
senorblanco@chromium.org | 92e0f22 | 2011-05-12 15:49:15 +0000 | [diff] [blame] | 613 | if (fProgramDesc.fUsesEdgeAA) { |
| 614 | programData->fUniLocations.fEdgesUni = |
| 615 | GR_GL(GetUniformLocation(progID, EDGES_UNI_NAME)); |
| 616 | GrAssert(kUnusedUniform != programData->fUniLocations.fEdgesUni); |
| 617 | } else { |
| 618 | programData->fUniLocations.fEdgesUni = kUnusedUniform; |
| 619 | } |
| 620 | |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 621 | for (int s = 0; s < GrDrawTarget::kNumStages; ++s) { |
| 622 | StageUniLocations& locations = programData->fUniLocations.fStages[s]; |
| 623 | if (fProgramDesc.fStages[s].fEnabled) { |
| 624 | if (kUseUniform == locations.fTextureMatrixUni) { |
| 625 | GrStringBuilder texMName; |
| 626 | tex_matrix_name(s, &texMName); |
| 627 | locations.fTextureMatrixUni = GR_GL(GetUniformLocation( |
| 628 | progID, |
| 629 | texMName.c_str())); |
| 630 | GrAssert(kUnusedUniform != locations.fTextureMatrixUni); |
| 631 | } |
| 632 | |
| 633 | if (kUseUniform == locations.fSamplerUni) { |
| 634 | GrStringBuilder samplerName; |
| 635 | sampler_name(s, &samplerName); |
| 636 | locations.fSamplerUni = GR_GL(GetUniformLocation( |
| 637 | progID, |
| 638 | samplerName.c_str())); |
| 639 | GrAssert(kUnusedUniform != locations.fSamplerUni); |
| 640 | } |
| 641 | |
| 642 | if (kUseUniform == locations.fNormalizedTexelSizeUni) { |
| 643 | GrStringBuilder texelSizeName; |
| 644 | normalized_texel_size_name(s, &texelSizeName); |
| 645 | locations.fNormalizedTexelSizeUni = |
| 646 | GR_GL(GetUniformLocation(progID, texelSizeName.c_str())); |
| 647 | GrAssert(kUnusedUniform != locations.fNormalizedTexelSizeUni); |
| 648 | } |
| 649 | |
| 650 | if (kUseUniform == locations.fRadial2Uni) { |
| 651 | GrStringBuilder radial2ParamName; |
| 652 | radial2_param_name(s, &radial2ParamName); |
| 653 | locations.fRadial2Uni = GR_GL(GetUniformLocation( |
| 654 | progID, |
| 655 | radial2ParamName.c_str())); |
| 656 | GrAssert(kUnusedUniform != locations.fRadial2Uni); |
| 657 | } |
junov@google.com | 6acc9b3 | 2011-05-16 18:32:07 +0000 | [diff] [blame^] | 658 | |
| 659 | if (kUseUniform == locations.fTexDomUni) { |
| 660 | GrStringBuilder texDomName; |
| 661 | tex_domain_name(s, &texDomName); |
| 662 | locations.fTexDomUni = GR_GL(GetUniformLocation( |
| 663 | progID, |
| 664 | texDomName.c_str())); |
| 665 | GrAssert(kUnusedUniform != locations.fTexDomUni); |
| 666 | } |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 667 | } |
| 668 | } |
| 669 | GR_GL(UseProgram(progID)); |
| 670 | |
| 671 | // init sampler unis and set bogus values for state tracking |
| 672 | for (int s = 0; s < GrDrawTarget::kNumStages; ++s) { |
| 673 | if (kUnusedUniform != programData->fUniLocations.fStages[s].fSamplerUni) { |
| 674 | GR_GL(Uniform1i(programData->fUniLocations.fStages[s].fSamplerUni, s)); |
| 675 | } |
| 676 | programData->fTextureMatrices[s] = GrMatrix::InvalidMatrix(); |
| 677 | programData->fRadial2CenterX1[s] = GR_ScalarMax; |
| 678 | programData->fRadial2Radius0[s] = -GR_ScalarMax; |
| 679 | programData->fTextureWidth[s] = -1; |
| 680 | programData->fTextureHeight[s] = -1; |
| 681 | } |
| 682 | programData->fViewMatrix = GrMatrix::InvalidMatrix(); |
| 683 | programData->fColor = GrColor_ILLEGAL; |
Scroggo | 97c88c2 | 2011-05-11 14:05:25 +0000 | [diff] [blame] | 684 | programData->fColorFilterColor = GrColor_ILLEGAL; |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 685 | } |
| 686 | |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 687 | //============================================================================ |
| 688 | // Stage code generation |
| 689 | //============================================================================ |
| 690 | |
| 691 | void GrGLProgram::genStageCode(int stageNum, |
bsalomon@google.com | 6aef1fb | 2011-05-05 12:33:22 +0000 | [diff] [blame] | 692 | const GrGLProgram::ProgramDesc::StageDesc& desc, |
| 693 | const char* fsInColor, // NULL means no incoming color |
| 694 | const char* fsOutColor, |
| 695 | const char* vsInCoord, |
| 696 | ShaderCodeSegments* segments, |
| 697 | StageUniLocations* locations) const { |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 698 | |
| 699 | GrAssert(stageNum >= 0 && stageNum <= 9); |
| 700 | |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 701 | GrStringBuilder varyingName; |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 702 | stage_varying_name(stageNum, &varyingName); |
| 703 | |
| 704 | // First decide how many coords are needed to access the texture |
| 705 | // Right now it's always 2 but we could start using 1D textures for |
| 706 | // gradients. |
| 707 | static const int coordDims = 2; |
| 708 | int varyingDims; |
| 709 | /// Vertex Shader Stuff |
| 710 | |
| 711 | // decide whether we need a matrix to transform texture coords |
| 712 | // and whether the varying needs a perspective coord. |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 713 | GrStringBuilder texMName; |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 714 | tex_matrix_name(stageNum, &texMName); |
| 715 | if (desc.fOptFlags & ProgramDesc::StageDesc::kIdentityMatrix_OptFlagBit) { |
| 716 | varyingDims = coordDims; |
| 717 | } else { |
bsalomon@google.com | 4be283f | 2011-04-19 21:15:09 +0000 | [diff] [blame] | 718 | #if GR_GL_ATTRIBUTE_MATRICES |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 719 | segments->fVSAttrs.appendf("attribute mat3 %s;\n", texMName.c_str()); |
| 720 | locations->fTextureMatrixUni = kSetAsAttribute; |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 721 | #else |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 722 | segments->fVSUnis.appendf("uniform mat3 %s;\n", texMName.c_str()); |
| 723 | locations->fTextureMatrixUni = kUseUniform; |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 724 | #endif |
| 725 | if (desc.fOptFlags & ProgramDesc::StageDesc::kNoPerspective_OptFlagBit) { |
| 726 | varyingDims = coordDims; |
| 727 | } else { |
| 728 | varyingDims = coordDims + 1; |
| 729 | } |
| 730 | } |
| 731 | |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 732 | GrStringBuilder samplerName; |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 733 | sampler_name(stageNum, &samplerName); |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 734 | segments->fFSUnis.appendf("uniform sampler2D %s;\n", samplerName.c_str()); |
| 735 | locations->fSamplerUni = kUseUniform; |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 736 | |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 737 | GrStringBuilder texelSizeName; |
bsalomon@google.com | 6aef1fb | 2011-05-05 12:33:22 +0000 | [diff] [blame] | 738 | if (ProgramDesc::StageDesc::k2x2_FetchMode == desc.fFetchMode) { |
| 739 | normalized_texel_size_name(stageNum, &texelSizeName); |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 740 | segments->fFSUnis.appendf("uniform vec2 %s;\n", texelSizeName.c_str()); |
bsalomon@google.com | 6aef1fb | 2011-05-05 12:33:22 +0000 | [diff] [blame] | 741 | } |
| 742 | |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 743 | segments->fVaryings.appendf("varying %s %s;\n", |
| 744 | float_vector_type(varyingDims), varyingName.c_str()); |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 745 | |
| 746 | if (desc.fOptFlags & ProgramDesc::StageDesc::kIdentityMatrix_OptFlagBit) { |
| 747 | GrAssert(varyingDims == coordDims); |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 748 | segments->fVSCode.appendf("\t%s = %s;\n", varyingName.c_str(), vsInCoord); |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 749 | } else { |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 750 | // varying = texMatrix * texCoord |
| 751 | segments->fVSCode.appendf("\t%s = (%s * vec3(%s, 1))%s;\n", |
| 752 | varyingName.c_str(), texMName.c_str(), |
| 753 | vsInCoord, vector_all_coords(varyingDims)); |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 754 | } |
| 755 | |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 756 | GrStringBuilder radial2ParamsName; |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 757 | radial2_param_name(stageNum, &radial2ParamsName); |
| 758 | // for radial grads without perspective we can pass the linear |
| 759 | // part of the quadratic as a varying. |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 760 | GrStringBuilder radial2VaryingName; |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 761 | radial2_varying_name(stageNum, &radial2VaryingName); |
| 762 | |
| 763 | if (ProgramDesc::StageDesc::kRadial2Gradient_CoordMapping == desc.fCoordMapping) { |
| 764 | |
bsalomon@google.com | dcf1b0b | 2011-05-11 19:00:54 +0000 | [diff] [blame] | 765 | segments->fVSUnis.appendf("uniform %s float %s[6];\n", |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 766 | GrPrecision(), radial2ParamsName.c_str()); |
| 767 | segments->fFSUnis.appendf("uniform float %s[6];\n", |
| 768 | radial2ParamsName.c_str()); |
| 769 | locations->fRadial2Uni = kUseUniform; |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 770 | |
| 771 | // if there is perspective we don't interpolate this |
| 772 | if (varyingDims == coordDims) { |
| 773 | GrAssert(2 == coordDims); |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 774 | segments->fVaryings.appendf("varying float %s;\n", radial2VaryingName.c_str()); |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 775 | |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 776 | // r2Var = 2 * (r2Parm[2] * varCoord.x - r2Param[3]) |
| 777 | segments->fVSCode.appendf("\t%s = 2.0 *(%s[2] * %s.x - %s[3]);\n", |
| 778 | radial2VaryingName.c_str(), radial2ParamsName.c_str(), |
| 779 | varyingName.c_str(), radial2ParamsName.c_str()); |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 780 | } |
| 781 | } |
| 782 | |
| 783 | /// Fragment Shader Stuff |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 784 | GrStringBuilder fsCoordName; |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 785 | // function used to access the shader, may be made projective |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 786 | GrStringBuilder texFunc("texture2D"); |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 787 | if (desc.fOptFlags & (ProgramDesc::StageDesc::kIdentityMatrix_OptFlagBit | |
| 788 | ProgramDesc::StageDesc::kNoPerspective_OptFlagBit)) { |
| 789 | GrAssert(varyingDims == coordDims); |
| 790 | fsCoordName = varyingName; |
| 791 | } else { |
bsalomon@google.com | 6aef1fb | 2011-05-05 12:33:22 +0000 | [diff] [blame] | 792 | // if we have to do some special op on the varyings to get |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 793 | // our final tex coords then when in perspective we have to |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 794 | // do an explicit divide. Otherwise, we can use a Proj func. |
bsalomon@google.com | 6aef1fb | 2011-05-05 12:33:22 +0000 | [diff] [blame] | 795 | if (ProgramDesc::StageDesc::kIdentity_CoordMapping == desc.fCoordMapping && |
| 796 | ProgramDesc::StageDesc::kSingle_FetchMode == desc.fFetchMode) { |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 797 | texFunc.append("Proj"); |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 798 | fsCoordName = varyingName; |
| 799 | } else { |
bsalomon@google.com | 6aef1fb | 2011-05-05 12:33:22 +0000 | [diff] [blame] | 800 | fsCoordName = "inCoord"; |
bsalomon@google.com | fc29629 | 2011-05-06 13:53:47 +0000 | [diff] [blame] | 801 | fsCoordName.appendS32(stageNum); |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 802 | segments->fFSCode.appendf("\t%s %s = %s%s / %s%s;\n", |
| 803 | float_vector_type(coordDims), |
| 804 | fsCoordName.c_str(), |
| 805 | varyingName.c_str(), |
| 806 | vector_nonhomog_coords(varyingDims), |
| 807 | varyingName.c_str(), |
| 808 | vector_homog_coord(varyingDims)); |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 809 | } |
| 810 | } |
| 811 | |
bsalomon@google.com | fc29629 | 2011-05-06 13:53:47 +0000 | [diff] [blame] | 812 | GrStringBuilder sampleCoords; |
bsalomon@google.com | 6aef1fb | 2011-05-05 12:33:22 +0000 | [diff] [blame] | 813 | bool complexCoord = false; |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 814 | switch (desc.fCoordMapping) { |
| 815 | case ProgramDesc::StageDesc::kIdentity_CoordMapping: |
| 816 | sampleCoords = fsCoordName; |
| 817 | break; |
| 818 | case ProgramDesc::StageDesc::kSweepGradient_CoordMapping: |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 819 | sampleCoords.printf("vec2(atan(- %s.y, - %s.x) * 0.1591549430918 + 0.5, 0.5)", fsCoordName.c_str(), fsCoordName.c_str()); |
bsalomon@google.com | 6aef1fb | 2011-05-05 12:33:22 +0000 | [diff] [blame] | 820 | complexCoord = true; |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 821 | break; |
| 822 | case ProgramDesc::StageDesc::kRadialGradient_CoordMapping: |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 823 | sampleCoords.printf("vec2(length(%s.xy), 0.5)", fsCoordName.c_str()); |
bsalomon@google.com | 6aef1fb | 2011-05-05 12:33:22 +0000 | [diff] [blame] | 824 | complexCoord = true; |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 825 | break; |
| 826 | case ProgramDesc::StageDesc::kRadial2Gradient_CoordMapping: { |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 827 | GrStringBuilder cName("c"); |
| 828 | GrStringBuilder ac4Name("ac4"); |
| 829 | GrStringBuilder rootName("root"); |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 830 | |
bsalomon@google.com | fc29629 | 2011-05-06 13:53:47 +0000 | [diff] [blame] | 831 | cName.appendS32(stageNum); |
| 832 | ac4Name.appendS32(stageNum); |
| 833 | rootName.appendS32(stageNum); |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 834 | |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 835 | // if we were able to interpolate the linear component bVar is the varying |
| 836 | // otherwise compute it |
| 837 | GrStringBuilder bVar; |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 838 | if (coordDims == varyingDims) { |
| 839 | bVar = radial2VaryingName; |
| 840 | GrAssert(2 == varyingDims); |
| 841 | } else { |
| 842 | GrAssert(3 == varyingDims); |
| 843 | bVar = "b"; |
bsalomon@google.com | fc29629 | 2011-05-06 13:53:47 +0000 | [diff] [blame] | 844 | bVar.appendS32(stageNum); |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 845 | segments->fFSCode.appendf("\tfloat %s = 2.0 * (%s[2] * %s.x - %s[3]);\n", |
| 846 | bVar.c_str(), radial2ParamsName.c_str(), |
| 847 | fsCoordName.c_str(), radial2ParamsName.c_str()); |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 848 | } |
| 849 | |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 850 | // c = (x^2)+(y^2) - params[4] |
| 851 | segments->fFSCode.appendf("\tfloat %s = dot(%s, %s) - %s[4];\n", |
| 852 | cName.c_str(), fsCoordName.c_str(), |
| 853 | fsCoordName.c_str(), |
| 854 | radial2ParamsName.c_str()); |
| 855 | // ac4 = 4.0 * params[0] * c |
| 856 | segments->fFSCode.appendf("\tfloat %s = %s[0] * 4.0 * %s;\n", |
| 857 | ac4Name.c_str(), radial2ParamsName.c_str(), |
| 858 | cName.c_str()); |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 859 | |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 860 | // root = sqrt(b^2-4ac) |
| 861 | // (abs to avoid exception due to fp precision) |
| 862 | segments->fFSCode.appendf("\tfloat %s = sqrt(abs(%s*%s - %s));\n", |
| 863 | rootName.c_str(), bVar.c_str(), bVar.c_str(), |
| 864 | ac4Name.c_str()); |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 865 | |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 866 | // x coord is: (-b + params[5] * sqrt(b^2-4ac)) * params[1] |
| 867 | // y coord is 0.5 (texture is effectively 1D) |
| 868 | sampleCoords.printf("vec2((-%s + %s[5] * %s) * %s[1], 0.5)", |
| 869 | bVar.c_str(), radial2ParamsName.c_str(), |
| 870 | rootName.c_str(), radial2ParamsName.c_str()); |
bsalomon@google.com | 6aef1fb | 2011-05-05 12:33:22 +0000 | [diff] [blame] | 871 | complexCoord = true; |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 872 | break;} |
| 873 | }; |
| 874 | |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 875 | const char* smear; |
| 876 | if (desc.fModulation == ProgramDesc::StageDesc::kAlpha_Modulation) { |
| 877 | smear = ".aaaa"; |
| 878 | } else { |
| 879 | smear = ""; |
| 880 | } |
| 881 | GrStringBuilder modulate; |
| 882 | if (NULL != fsInColor) { |
| 883 | modulate.printf(" * %s", fsInColor); |
| 884 | } |
| 885 | |
junov@google.com | 6acc9b3 | 2011-05-16 18:32:07 +0000 | [diff] [blame^] | 886 | if (desc.fOptFlags & |
| 887 | ProgramDesc::StageDesc::kCustomTextureDomain_OptFlagBit) { |
| 888 | GrStringBuilder texDomainName; |
| 889 | tex_domain_name(stageNum, &texDomainName); |
| 890 | segments->fFSUnis.appendf("uniform %s %s;\n", |
| 891 | float_vector_type(4), |
| 892 | texDomainName.c_str()); |
| 893 | GrStringBuilder coordVar("clampCoord"); |
| 894 | segments->fFSCode.appendf("\t%s %s = clamp(%s, %s.xy, %s.zw);\n", |
| 895 | float_vector_type(coordDims), |
| 896 | coordVar.c_str(), |
| 897 | sampleCoords.c_str(), |
| 898 | texDomainName.c_str(), |
| 899 | texDomainName.c_str()); |
| 900 | sampleCoords = coordVar; |
| 901 | locations->fTexDomUni = kUseUniform; |
| 902 | } |
| 903 | |
bsalomon@google.com | 6aef1fb | 2011-05-05 12:33:22 +0000 | [diff] [blame] | 904 | if (ProgramDesc::StageDesc::k2x2_FetchMode == desc.fFetchMode) { |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 905 | locations->fNormalizedTexelSizeUni = kUseUniform; |
bsalomon@google.com | 6aef1fb | 2011-05-05 12:33:22 +0000 | [diff] [blame] | 906 | if (complexCoord) { |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 907 | // assign the coord to a var rather than compute 4x. |
| 908 | GrStringBuilder coordVar("tCoord"); |
bsalomon@google.com | fc29629 | 2011-05-06 13:53:47 +0000 | [diff] [blame] | 909 | coordVar.appendS32(stageNum); |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 910 | segments->fFSCode.appendf("\t%s %s = %s;\n", |
| 911 | float_vector_type(coordDims), |
| 912 | coordVar.c_str(), sampleCoords.c_str()); |
bsalomon@google.com | 6aef1fb | 2011-05-05 12:33:22 +0000 | [diff] [blame] | 913 | sampleCoords = coordVar; |
| 914 | } |
bsalomon@google.com | 6aef1fb | 2011-05-05 12:33:22 +0000 | [diff] [blame] | 915 | GrAssert(2 == coordDims); |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 916 | GrStringBuilder accumVar("accum"); |
| 917 | accumVar.appendS32(stageNum); |
| 918 | segments->fFSCode.appendf("\tvec4 %s = %s(%s, %s + vec2(-%s.x,-%s.y))%s;\n", accumVar.c_str(), texFunc.c_str(), samplerName.c_str(), sampleCoords.c_str(), texelSizeName.c_str(), texelSizeName.c_str(), smear); |
| 919 | segments->fFSCode.appendf("\t%s += %s(%s, %s + vec2(+%s.x,-%s.y))%s;\n", accumVar.c_str(), texFunc.c_str(), samplerName.c_str(), sampleCoords.c_str(), texelSizeName.c_str(), texelSizeName.c_str(), smear); |
| 920 | segments->fFSCode.appendf("\t%s += %s(%s, %s + vec2(-%s.x,+%s.y))%s;\n", accumVar.c_str(), texFunc.c_str(), samplerName.c_str(), sampleCoords.c_str(), texelSizeName.c_str(), texelSizeName.c_str(), smear); |
| 921 | segments->fFSCode.appendf("\t%s += %s(%s, %s + vec2(+%s.x,+%s.y))%s;\n", accumVar.c_str(), texFunc.c_str(), samplerName.c_str(), sampleCoords.c_str(), texelSizeName.c_str(), texelSizeName.c_str(), smear); |
| 922 | segments->fFSCode.appendf("\t%s = .25 * %s%s;\n", fsOutColor, accumVar.c_str(), modulate.c_str()); |
bsalomon@google.com | 6aef1fb | 2011-05-05 12:33:22 +0000 | [diff] [blame] | 923 | } else { |
bsalomon@google.com | 9196130 | 2011-05-09 18:39:58 +0000 | [diff] [blame] | 924 | segments->fFSCode.appendf("\t%s = %s(%s, %s)%s %s;\n", fsOutColor, texFunc.c_str(), samplerName.c_str(), sampleCoords.c_str(), smear, modulate.c_str()); |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 925 | } |
junov@google.com | f93e717 | 2011-03-31 21:26:24 +0000 | [diff] [blame] | 926 | |
| 927 | if(fStageEffects[stageNum]) { |
| 928 | fStageEffects[stageNum]->genShaderCode(segments); |
| 929 | } |
| 930 | } |
| 931 | |