| /* |
| Copyright 2010 Google Inc. |
| |
| Licensed under the Apache License, Version 2.0 (the "License"); |
| you may not use this file except in compliance with the License. |
| You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| */ |
| |
| |
| #include "GrGLConfig.h" |
| |
| #if GR_SUPPORT_GLES2 || GR_SUPPORT_GLDESKTOP |
| |
| #include "GrGpuGLShaders2.h" |
| #include "GrGpuVertex.h" |
| #include "GrMemory.h" |
| #include "GrStringBuilder.h" |
| |
| |
| #define ATTRIBUTE_MATRIX 0 |
| |
| #define PRINT_SHADERS 0 |
| |
| #define SKIP_CACHE_CHECK true |
| |
| #if GR_SUPPORT_GLES2 |
| #define GR_PRECISION "mediump" |
| const char GR_SHADER_PRECISION[] = "precision mediump float;\n"; |
| #else |
| #define GR_PRECISION "" |
| const char GR_SHADER_PRECISION[] = ""; |
| #endif |
| |
| |
| #define POS_ATTR_LOCATION 0 |
| #define TEX_ATTR_LOCATION(X) (1 + X) |
| #define COL_ATTR_LOCATION (2 + GrDrawTarget::kMaxTexCoords) |
| #if ATTRIBUTE_MATRIX |
| #define VIEWMAT_ATTR_LOCATION (3 + GrDrawTarget::kMaxTexCoords) |
| #define TEXMAT_ATTR_LOCATION(X) (6 + GrDrawTarget::kMaxTexCoords + 3 * (X)) |
| #define BOGUS_MATRIX_UNI_LOCATION 1000 |
| #endif |
| |
| #define GR_UINT32_MAX static_cast<uint32_t>(-1) |
| |
| struct GrGpuGLShaders2::StageUniLocations { |
| GLint fTextureMatrixUni; |
| GLint fSamplerUni; |
| GLint fRadial2Uni; |
| }; |
| |
| struct GrGpuGLShaders2::UniLocations { |
| GLint fViewMatrixUni; |
| StageUniLocations fStages[kNumStages]; |
| }; |
| |
| // Records per-program information |
| // we can specify the attribute locations so that they are constant |
| // across our shaders. But the driver determines the uniform locations |
| // at link time. We don't need to remember the sampler uniform location |
| // because we will bind a texture slot to it and never change it |
| // Uniforms are program-local so we can't rely on fHWState to hold the |
| // previous uniform state after a program change. |
| struct GrGpuGLShaders2::Program { |
| // IDs |
| GLuint fVShaderID; |
| GLuint fFShaderID; |
| GLuint fProgramID; |
| |
| // shader uniform locations (-1 if shader doesn't use them) |
| UniLocations fUniLocations; |
| |
| // these reflect the current values of uniforms |
| // (GL uniform values travel with program) |
| GrMatrix fViewMatrix; |
| GrMatrix fTextureMatrices[kNumStages]; |
| GrScalar fRadial2CenterX1[kNumStages]; |
| GrScalar fRadial2Radius0[kNumStages]; |
| bool fRadial2PosRoot[kNumStages]; |
| |
| }; |
| |
| // must be tightly packed |
| struct GrGpuGLShaders2::StageDesc { |
| enum OptFlagBits { |
| kNoPerspective_OptFlagBit = 0x1, |
| kIdentityMatrix_OptFlagBit = 0x2, |
| }; |
| unsigned fOptFlags : 8; |
| |
| unsigned fEnabled : 8; |
| |
| enum Modulation { |
| kColor_Modulation, |
| kAlpha_Modulation, |
| } fModulation : 8; |
| |
| enum CoordMapping { |
| kIdentity_CoordMapping, |
| kRadialGradient_CoordMapping, |
| kSweepGradient_CoordMapping, |
| kRadial2Gradient_CoordMapping, |
| } fCoordMapping : 8; |
| }; |
| |
| // must be tightly packed |
| struct GrGpuGLShaders2::ProgramDesc { |
| GrVertexLayout fVertexLayout; |
| GR_STATIC_ASSERT(2 == sizeof(GrVertexLayout)); // pack with next field |
| |
| enum { |
| kNotPoints_OptFlagBit = 0x1, |
| kVertexColorAllOnes_OptFlagBit = 0x2, |
| }; |
| // we're assuming optflags and layout pack into 32 bits |
| // VS 2010 seems to require short rather than just unsigned |
| // for this to pack |
| unsigned short fOptFlags : 16; |
| |
| StageDesc fStages[kNumStages]; |
| |
| bool operator == (const ProgramDesc& desc) const { |
| // keep 4-byte aligned and tightly packed |
| GR_STATIC_ASSERT(4 == sizeof(StageDesc)); |
| GR_STATIC_ASSERT(2 + 2 + 4 * kNumStages == sizeof(ProgramDesc)); |
| return 0 == memcmp(this, &desc, sizeof(ProgramDesc)); |
| } |
| }; |
| |
| #include "GrTHashCache.h" |
| |
| class GrGpuGLShaders2::ProgramCache : public ::GrNoncopyable { |
| private: |
| struct Entry; |
| class HashKey { |
| public: |
| HashKey(); |
| HashKey(const ProgramDesc& desc); |
| static const HashKey& GetKey(const Entry&); |
| static bool EQ(const Entry&, const HashKey&); |
| static bool LT(const Entry&, const HashKey&); |
| bool operator <(const HashKey& key) const; |
| bool operator ==(const HashKey& key) const; |
| uint32_t getHash() const; |
| private: |
| ProgramDesc fDesc; |
| uint32_t fHash; |
| }; |
| |
| struct Entry { |
| Program fProgram; |
| HashKey fKey; |
| uint32_t fLRUStamp; |
| }; |
| |
| // if hash bits is changed, need to change hash function |
| GrTHashTable<Entry, HashKey, 8> fHashCache; |
| |
| static const int MAX_ENTRIES = 16; |
| Entry fEntries[MAX_ENTRIES]; |
| int fCount; |
| uint32_t fCurrLRUStamp; |
| |
| public: |
| ProgramCache() { |
| fCount = 0; |
| fCurrLRUStamp = 0; |
| } |
| |
| ~ProgramCache() { |
| for (int i = 0; i < fCount; ++i) { |
| GrGpuGLShaders2::DeleteProgram(&fEntries[i].fProgram); |
| } |
| } |
| |
| void abandon() { |
| fCount = 0; |
| } |
| |
| void invalidateViewMatrices() { |
| for (int i = 0; i < fCount; ++i) { |
| // set to illegal matrix |
| fEntries[i].fProgram.fViewMatrix = GrMatrix::InvalidMatrix(); |
| } |
| } |
| |
| Program* getProgram(const ProgramDesc& desc) { |
| HashKey key(desc); |
| Entry* entry = fHashCache.find(key); |
| if (NULL == entry) { |
| if (fCount < MAX_ENTRIES) { |
| entry = fEntries + fCount; |
| ++fCount; |
| } else { |
| GrAssert(MAX_ENTRIES == fCount); |
| entry = fEntries; |
| for (int i = 1; i < MAX_ENTRIES; ++i) { |
| if (fEntries[i].fLRUStamp < entry->fLRUStamp) { |
| entry = fEntries + i; |
| } |
| } |
| fHashCache.remove(entry->fKey, entry); |
| GrGpuGLShaders2::DeleteProgram(&entry->fProgram); |
| } |
| entry->fKey = key; |
| GrGpuGLShaders2::GenProgram(desc, &entry->fProgram); |
| fHashCache.insert(entry->fKey, entry); |
| } |
| |
| entry->fLRUStamp = fCurrLRUStamp; |
| if (GR_UINT32_MAX == fCurrLRUStamp) { |
| // wrap around! just trash our LRU, one time hit. |
| for (int i = 0; i < fCount; ++i) { |
| fEntries[i].fLRUStamp = 0; |
| } |
| } |
| ++fCurrLRUStamp; |
| return &entry->fProgram; |
| } |
| }; |
| |
| GrGpuGLShaders2::ProgramCache::HashKey::HashKey() { |
| } |
| |
| static uint32_t ror(uint32_t x) { |
| return (x >> 8) | (x << 24); |
| } |
| |
| static uint32_t rol(uint32_t x) { |
| return (x << 8) | (x >> 24); |
| } |
| |
| GrGpuGLShaders2::ProgramCache::HashKey::HashKey(const ProgramDesc& desc) { |
| fDesc = desc; |
| // if you change the size of the desc, need to update the hash function |
| GR_STATIC_ASSERT(12 == sizeof(ProgramDesc)); |
| |
| uint32_t* d = GrTCast<uint32_t*>(&fDesc); |
| fHash = d[0] ^ ror(d[1]) ^ rol(d[2]); |
| } |
| |
| bool GrGpuGLShaders2::ProgramCache::HashKey::EQ(const Entry& entry, |
| const HashKey& key) { |
| return entry.fKey == key; |
| } |
| |
| bool GrGpuGLShaders2::ProgramCache::HashKey::LT(const Entry& entry, |
| const HashKey& key) { |
| return entry.fKey < key; |
| } |
| |
| bool GrGpuGLShaders2::ProgramCache::HashKey::operator ==(const HashKey& key) const { |
| return fDesc == key.fDesc; |
| } |
| |
| bool GrGpuGLShaders2::ProgramCache::HashKey::operator <(const HashKey& key) const { |
| return memcmp(&fDesc, &key.fDesc, sizeof(HashKey)) < 0; |
| } |
| |
| uint32_t GrGpuGLShaders2::ProgramCache::HashKey::getHash() const { |
| return fHash; |
| } |
| |
| struct GrGpuGLShaders2::ShaderCodeSegments { |
| GrSStringBuilder<256> fVSUnis; |
| GrSStringBuilder<256> fVSAttrs; |
| GrSStringBuilder<256> fVaryings; |
| GrSStringBuilder<256> fFSUnis; |
| GrSStringBuilder<512> fVSCode; |
| GrSStringBuilder<512> fFSCode; |
| }; |
| // for variable names etc |
| typedef GrSStringBuilder<16> GrTokenString; |
| |
| #if ATTRIBUTE_MATRIX |
| #define VIEW_MATRIX_NAME "aViewM" |
| #else |
| #define VIEW_MATRIX_NAME "uViewM" |
| #endif |
| |
| #define POS_ATTR_NAME "aPosition" |
| #define COL_ATTR_NAME "aColor" |
| |
| static inline void tex_attr_name(int coordIdx, GrStringBuilder* s) { |
| *s = "aTexCoord"; |
| s->appendInt(coordIdx); |
| } |
| |
| static inline const char* float_vector_type(int count) { |
| static const char* FLOAT_VECS[] = {"ERROR", "float", "vec2", "vec3", "vec4"}; |
| GrAssert(count >= 1 && count < (int)GR_ARRAY_COUNT(FLOAT_VECS)); |
| return FLOAT_VECS[count]; |
| } |
| |
| static inline const char* vector_homog_coord(int count) { |
| static const char* HOMOGS[] = {"ERROR", "", ".y", ".z", ".w"}; |
| GrAssert(count >= 1 && count < (int)GR_ARRAY_COUNT(HOMOGS)); |
| return HOMOGS[count]; |
| } |
| |
| static inline const char* vector_nonhomog_coords(int count) { |
| static const char* NONHOMOGS[] = {"ERROR", "", ".x", ".xy", ".xyz"}; |
| GrAssert(count >= 1 && count < (int)GR_ARRAY_COUNT(NONHOMOGS)); |
| return NONHOMOGS[count]; |
| } |
| |
| static inline const char* vector_all_coords(int count) { |
| static const char* ALL[] = {"ERROR", "", ".xy", ".xyz", ".xyzw"}; |
| GrAssert(count >= 1 && count < (int)GR_ARRAY_COUNT(ALL)); |
| return ALL[count]; |
| } |
| |
| static void tex_matrix_name(int stage, GrStringBuilder* s) { |
| #if ATTRIBUTE_MATRIX |
| *s = "aTexM"; |
| #else |
| *s = "uTexM"; |
| #endif |
| s->appendInt(stage); |
| } |
| |
| static void sampler_name(int stage, GrStringBuilder* s) { |
| *s = "uSampler"; |
| s->appendInt(stage); |
| } |
| |
| static void stage_varying_name(int stage, GrStringBuilder* s) { |
| *s = "vStage"; |
| s->appendInt(stage); |
| } |
| |
| static void radial2_param_name(int stage, GrStringBuilder* s) { |
| *s = "uRadial2Params"; |
| s->appendInt(stage); |
| } |
| |
| static void radial2_varying_name(int stage, GrStringBuilder* s) { |
| *s = "vB"; |
| s->appendInt(stage); |
| } |
| |
| #include "GrRandom.h" |
| |
| void GrGpuGLShaders2::ProgramUnitTest() { |
| static const int PROG_OPTS[] = { |
| 0, |
| ProgramDesc::kNotPoints_OptFlagBit, |
| ProgramDesc::kVertexColorAllOnes_OptFlagBit, |
| ProgramDesc::kNotPoints_OptFlagBit | ProgramDesc::kVertexColorAllOnes_OptFlagBit |
| }; |
| static const int STAGE_OPTS[] = { |
| 0, |
| StageDesc::kNoPerspective_OptFlagBit, |
| StageDesc::kIdentity_CoordMapping |
| }; |
| static const int STAGE_MODULATES[] = { |
| StageDesc::kColor_Modulation, |
| StageDesc::kAlpha_Modulation |
| }; |
| static const int STAGE_COORD_MAPPINGS[] = { |
| StageDesc::kIdentity_CoordMapping, |
| StageDesc::kRadialGradient_CoordMapping, |
| StageDesc::kSweepGradient_CoordMapping, |
| StageDesc::kRadial2Gradient_CoordMapping |
| }; |
| ProgramDesc pdesc; |
| memset(&pdesc, 0, sizeof(pdesc)); |
| |
| static const int NUM_TESTS = 512; |
| |
| // GrRandoms nextU() values have patterns in the low bits |
| // So using nextU() % array_count might never take some values. |
| GrRandom random; |
| for (int t = 0; t < NUM_TESTS; ++t) { |
| |
| pdesc.fVertexLayout = 0; |
| for (int s = 0; s < kNumStages; ++s) { |
| // enable the stage? |
| if (random.nextF() > .5f) { |
| // use separate tex coords? |
| if (random.nextF() > .5f) { |
| int t = (int)(random.nextF() * kMaxTexCoords); |
| pdesc.fVertexLayout |= StageTexCoordVertexLayoutBit(s, t); |
| } else { |
| pdesc.fVertexLayout |= StagePosAsTexCoordVertexLayoutBit(s); |
| } |
| } |
| // use text-formatted verts? |
| if (random.nextF() > .5f) { |
| pdesc.fVertexLayout |= kTextFormat_VertexLayoutBit; |
| } |
| } |
| |
| int x = (int)(random.nextF() * GR_ARRAY_COUNT(PROG_OPTS)); |
| pdesc.fOptFlags = PROG_OPTS[x]; |
| for (int s = 0; s < kNumStages; ++s) { |
| pdesc.fStages[s].fEnabled = VertexUsesStage(s, pdesc.fVertexLayout); |
| x = (int)(random.nextF() * GR_ARRAY_COUNT(STAGE_OPTS)); |
| pdesc.fStages[s].fOptFlags = STAGE_OPTS[x]; |
| x = (int)(random.nextF() * GR_ARRAY_COUNT(STAGE_MODULATES)); |
| pdesc.fStages[s].fModulation = (StageDesc::Modulation) STAGE_MODULATES[x]; |
| x = (int)(random.nextF() * GR_ARRAY_COUNT(STAGE_COORD_MAPPINGS)); |
| pdesc.fStages[s].fCoordMapping = (StageDesc::CoordMapping) STAGE_COORD_MAPPINGS[x]; |
| } |
| Program program; |
| GenProgram(pdesc, &program); |
| DeleteProgram(&program); |
| } |
| } |
| |
| void GrGpuGLShaders2::GenStageCode(int stageNum, |
| const StageDesc& desc, |
| const char* fsInColor, // NULL means no incoming color |
| const char* fsOutColor, |
| const char* vsInCoord, |
| ShaderCodeSegments* segments, |
| StageUniLocations* locations) { |
| |
| GrAssert(stageNum >= 0 && stageNum <= 9); |
| |
| GrTokenString varyingName; |
| stage_varying_name(stageNum, &varyingName); |
| |
| // First decide how many coords are needed to access the texture |
| // Right now it's always 2 but we could start using 1D textures for |
| // gradients. |
| static const int coordDims = 2; |
| int varyingDims; |
| /// Vertex Shader Stuff |
| |
| // decide whether we need a matrix to transform texture coords |
| // and whether the varying needs a perspective coord. |
| GrTokenString texMName; |
| tex_matrix_name(stageNum, &texMName); |
| if (desc.fOptFlags & StageDesc::kIdentityMatrix_OptFlagBit) { |
| varyingDims = coordDims; |
| } else { |
| #if ATTRIBUTE_MATRIX |
| segments->fVSAttrs += "attribute mat3 "; |
| segments->fVSAttrs += texMName; |
| segments->fVSAttrs += ";\n"; |
| #else |
| segments->fVSUnis += "uniform mat3 "; |
| segments->fVSUnis += texMName; |
| segments->fVSUnis += ";\n"; |
| locations->fTextureMatrixUni = 1; |
| #endif |
| if (desc.fOptFlags & StageDesc::kNoPerspective_OptFlagBit) { |
| varyingDims = coordDims; |
| } else { |
| varyingDims = coordDims + 1; |
| } |
| } |
| |
| GrTokenString samplerName; |
| sampler_name(stageNum, &samplerName); |
| segments->fFSUnis += "uniform sampler2D "; |
| segments->fFSUnis += samplerName; |
| segments->fFSUnis += ";\n"; |
| locations->fSamplerUni = 1; |
| |
| segments->fVaryings += "varying "; |
| segments->fVaryings += float_vector_type(varyingDims); |
| segments->fVaryings += " "; |
| segments->fVaryings += varyingName; |
| segments->fVaryings += ";\n"; |
| |
| if (desc.fOptFlags & StageDesc::kIdentityMatrix_OptFlagBit) { |
| GrAssert(varyingDims == coordDims); |
| segments->fVSCode += "\t"; |
| segments->fVSCode += varyingName; |
| segments->fVSCode += " = "; |
| segments->fVSCode += vsInCoord; |
| segments->fVSCode += ";\n"; |
| } else { |
| segments->fVSCode += "\t"; |
| segments->fVSCode += varyingName; |
| segments->fVSCode += " = ("; |
| segments->fVSCode += texMName; |
| segments->fVSCode += " * vec3("; |
| segments->fVSCode += vsInCoord; |
| segments->fVSCode += ", 1))"; |
| segments->fVSCode += vector_all_coords(varyingDims); |
| segments->fVSCode += ";\n"; |
| } |
| |
| GrTokenString radial2ParamsName; |
| radial2_param_name(stageNum, &radial2ParamsName); |
| // for radial grads without perspective we can pass the linear |
| // part of the quadratic as a varying. |
| GrTokenString radial2VaryingName; |
| radial2_varying_name(stageNum, &radial2VaryingName); |
| |
| if (StageDesc::kRadial2Gradient_CoordMapping == desc.fCoordMapping) { |
| |
| segments->fVSUnis += "uniform " GR_PRECISION " float "; |
| segments->fVSUnis += radial2ParamsName; |
| segments->fVSUnis += "[6];\n"; |
| |
| segments->fFSUnis += "uniform " GR_PRECISION " float "; |
| segments->fFSUnis += radial2ParamsName; |
| segments->fFSUnis += "[6];\n"; |
| locations->fRadial2Uni = 1; |
| |
| // if there is perspective we don't interpolate this |
| if (varyingDims == coordDims) { |
| GrAssert(2 == coordDims); |
| segments->fVaryings += "varying float "; |
| segments->fVaryings += radial2VaryingName; |
| segments->fVaryings += ";\n"; |
| |
| segments->fVSCode += "\t"; |
| segments->fVSCode += radial2VaryingName; |
| segments->fVSCode += " = 2.0 * ("; |
| segments->fVSCode += radial2ParamsName; |
| segments->fVSCode += "[2] * "; |
| segments->fVSCode += varyingName; |
| segments->fVSCode += ".x "; |
| segments->fVSCode += " - "; |
| segments->fVSCode += radial2ParamsName; |
| segments->fVSCode += "[3]);\n"; |
| } |
| } |
| |
| /// Fragment Shader Stuff |
| GrTokenString fsCoordName; |
| // function used to access the shader, may be made projective |
| GrTokenString texFunc("texture2D"); |
| if (desc.fOptFlags & (StageDesc::kIdentityMatrix_OptFlagBit | |
| StageDesc::kNoPerspective_OptFlagBit)) { |
| GrAssert(varyingDims == coordDims); |
| fsCoordName = varyingName; |
| } else { |
| // if we have to do some non-matrix op on the varyings to get |
| // our final tex coords then when in perspective we have to |
| // do an explicit divide |
| if (StageDesc::kIdentity_CoordMapping == desc.fCoordMapping) { |
| texFunc += "Proj"; |
| fsCoordName = varyingName; |
| } else { |
| fsCoordName = "tCoord"; |
| fsCoordName.appendInt(stageNum); |
| |
| segments->fFSCode += "\t"; |
| segments->fFSCode += float_vector_type(coordDims); |
| segments->fFSCode += " "; |
| segments->fFSCode += fsCoordName; |
| segments->fFSCode += " = "; |
| segments->fFSCode += varyingName; |
| segments->fFSCode += vector_nonhomog_coords(varyingDims); |
| segments->fFSCode += " / "; |
| segments->fFSCode += varyingName; |
| segments->fFSCode += vector_homog_coord(varyingDims); |
| segments->fFSCode += ";\n"; |
| } |
| } |
| |
| GrSStringBuilder<96> sampleCoords; |
| switch (desc.fCoordMapping) { |
| case StageDesc::kIdentity_CoordMapping: |
| sampleCoords = fsCoordName; |
| break; |
| case StageDesc::kSweepGradient_CoordMapping: |
| sampleCoords = "vec2(atan(-"; |
| sampleCoords += fsCoordName; |
| sampleCoords += ".y, -"; |
| sampleCoords += fsCoordName; |
| sampleCoords += ".x)*0.1591549430918 + 0.5, 0.5)"; |
| break; |
| case StageDesc::kRadialGradient_CoordMapping: |
| sampleCoords = "vec2(length("; |
| sampleCoords += fsCoordName; |
| sampleCoords += ".xy), 0.5)"; |
| break; |
| case StageDesc::kRadial2Gradient_CoordMapping: { |
| GrTokenString cName = "c"; |
| GrTokenString ac4Name = "ac4"; |
| GrTokenString rootName = "root"; |
| |
| cName.appendInt(stageNum); |
| ac4Name.appendInt(stageNum); |
| rootName.appendInt(stageNum); |
| |
| GrTokenString bVar; |
| if (coordDims == varyingDims) { |
| bVar = radial2VaryingName; |
| GrAssert(2 == varyingDims); |
| } else { |
| GrAssert(3 == varyingDims); |
| bVar = "b"; |
| bVar.appendInt(stageNum); |
| segments->fFSCode += "\tfloat "; |
| segments->fFSCode += bVar; |
| segments->fFSCode += " = 2.0 * ("; |
| segments->fFSCode += radial2ParamsName; |
| segments->fFSCode += "[2] * "; |
| segments->fFSCode += fsCoordName; |
| segments->fFSCode += ".x "; |
| segments->fFSCode += " - "; |
| segments->fFSCode += radial2ParamsName; |
| segments->fFSCode += "[3]);\n"; |
| } |
| |
| segments->fFSCode += "\tfloat "; |
| segments->fFSCode += cName; |
| segments->fFSCode += " = dot("; |
| segments->fFSCode += fsCoordName; |
| segments->fFSCode += ", "; |
| segments->fFSCode += fsCoordName; |
| segments->fFSCode += ") + "; |
| segments->fFSCode += " - "; |
| segments->fFSCode += radial2ParamsName; |
| segments->fFSCode += "[4];\n"; |
| |
| segments->fFSCode += "\tfloat "; |
| segments->fFSCode += ac4Name; |
| segments->fFSCode += " = "; |
| segments->fFSCode += radial2ParamsName; |
| segments->fFSCode += "[0] * 4.0 * "; |
| segments->fFSCode += cName; |
| segments->fFSCode += ";\n"; |
| |
| segments->fFSCode += "\tfloat "; |
| segments->fFSCode += rootName; |
| segments->fFSCode += " = sqrt(abs("; |
| segments->fFSCode += bVar; |
| segments->fFSCode += " * "; |
| segments->fFSCode += bVar; |
| segments->fFSCode += " - "; |
| segments->fFSCode += ac4Name; |
| segments->fFSCode += "));\n"; |
| |
| sampleCoords = "vec2((-"; |
| sampleCoords += bVar; |
| sampleCoords += " + "; |
| sampleCoords += radial2ParamsName; |
| sampleCoords += "[5] * "; |
| sampleCoords += rootName; |
| sampleCoords += ") * "; |
| sampleCoords += radial2ParamsName; |
| sampleCoords += "[1], 0.5)\n"; |
| break;} |
| }; |
| |
| segments->fFSCode += "\t"; |
| segments->fFSCode += fsOutColor; |
| segments->fFSCode += " = "; |
| if (NULL != fsInColor) { |
| segments->fFSCode += fsInColor; |
| segments->fFSCode += " * "; |
| } |
| segments->fFSCode += texFunc; |
| segments->fFSCode += "("; |
| segments->fFSCode += samplerName; |
| segments->fFSCode += ", "; |
| segments->fFSCode += sampleCoords; |
| segments->fFSCode += ")"; |
| if (desc.fModulation == StageDesc::kAlpha_Modulation) { |
| segments->fFSCode += ".aaaa"; |
| } |
| segments->fFSCode += ";\n"; |
| |
| } |
| |
| void GrGpuGLShaders2::GenProgram(const ProgramDesc& desc, |
| Program* program) { |
| |
| ShaderCodeSegments segments; |
| const uint32_t& layout = desc.fVertexLayout; |
| |
| memset(&program->fUniLocations, 0, sizeof(UniLocations)); |
| |
| bool haveColor = !(ProgramDesc::kVertexColorAllOnes_OptFlagBit & |
| desc.fOptFlags); |
| |
| #if ATTRIBUTE_MATRIX |
| segments.fVSAttrs = "attribute mat3 " VIEW_MATRIX_NAME ";\n"; |
| #else |
| segments.fVSUnis = "uniform mat3 " VIEW_MATRIX_NAME ";\n"; |
| segments.fVSAttrs = ""; |
| #endif |
| segments.fVSAttrs += "attribute vec2 " POS_ATTR_NAME ";\n"; |
| if (haveColor) { |
| segments.fVSAttrs += "attribute vec4 " COL_ATTR_NAME ";\n"; |
| segments.fVaryings = "varying vec4 vColor;\n"; |
| } else { |
| segments.fVaryings = ""; |
| } |
| |
| segments.fVSCode = "void main() {\n" |
| "\tvec3 pos3 = " VIEW_MATRIX_NAME " * vec3(" POS_ATTR_NAME ", 1);\n" |
| "\tgl_Position = vec4(pos3.xy, 0, pos3.z);\n"; |
| if (haveColor) { |
| segments.fVSCode += "\tvColor = " COL_ATTR_NAME ";\n"; |
| } |
| |
| if (!(desc.fOptFlags & ProgramDesc::kNotPoints_OptFlagBit)){ |
| segments.fVSCode += "\tgl_PointSize = 1.0;\n"; |
| } |
| segments.fFSCode = "void main() {\n"; |
| |
| // add texture coordinates that are used to the list of vertex attr decls |
| GrTokenString texCoordAttrs[kMaxTexCoords]; |
| for (int t = 0; t < kMaxTexCoords; ++t) { |
| if (VertexUsesTexCoordIdx(t, layout)) { |
| tex_attr_name(t, texCoordAttrs + t); |
| |
| segments.fVSAttrs += "attribute vec2 "; |
| segments.fVSAttrs += texCoordAttrs[t]; |
| segments.fVSAttrs += ";\n"; |
| } |
| } |
| |
| // for each enabled stage figure out what the input coordinates are |
| // and count the number of stages in use. |
| const char* stageInCoords[kNumStages]; |
| int numActiveStages = 0; |
| |
| for (int s = 0; s < kNumStages; ++s) { |
| if (desc.fStages[s].fEnabled) { |
| if (StagePosAsTexCoordVertexLayoutBit(s) & layout) { |
| stageInCoords[s] = POS_ATTR_NAME; |
| } else { |
| int tcIdx = VertexTexCoordsForStage(s, layout); |
| // we better have input tex coordinates if stage is enabled. |
| GrAssert(tcIdx >= 0); |
| GrAssert(texCoordAttrs[tcIdx].length()); |
| stageInCoords[s] = texCoordAttrs[tcIdx].cstr(); |
| } |
| ++numActiveStages; |
| } |
| } |
| |
| GrTokenString inColor = "vColor"; |
| |
| // if we have active stages string them together, feeding the output color |
| // of each to the next and generating code for each stage. |
| if (numActiveStages) { |
| int currActiveStage = 0; |
| for (int s = 0; s < kNumStages; ++s) { |
| if (desc.fStages[s].fEnabled) { |
| GrTokenString outColor; |
| if (currActiveStage < (numActiveStages - 1)) { |
| outColor = "color"; |
| outColor.appendInt(currActiveStage); |
| segments.fFSCode += "\tvec4 "; |
| segments.fFSCode += outColor; |
| segments.fFSCode += ";\n"; |
| } else { |
| outColor = "gl_FragColor"; |
| } |
| GenStageCode(s, |
| desc.fStages[s], |
| haveColor ? inColor.cstr() : NULL, |
| outColor.cstr(), |
| stageInCoords[s], |
| &segments, |
| &program->fUniLocations.fStages[s]); |
| ++currActiveStage; |
| inColor = outColor; |
| haveColor = true; |
| } |
| } |
| } else { |
| segments.fFSCode += "\tgl_FragColor = "; |
| if (haveColor) { |
| segments.fFSCode += inColor; |
| } else { |
| segments.fFSCode += "vec4(1,1,1,1)"; |
| } |
| segments.fFSCode += ";\n"; |
| } |
| segments.fFSCode += "}\n"; |
| segments.fVSCode += "}\n"; |
| |
| |
| const char* strings[4]; |
| int lengths[4]; |
| int stringCnt = 0; |
| |
| if (segments.fVSUnis.length()) { |
| strings[stringCnt] = segments.fVSUnis.cstr(); |
| lengths[stringCnt] = segments.fVSUnis.length(); |
| ++stringCnt; |
| } |
| if (segments.fVSAttrs.length()) { |
| strings[stringCnt] = segments.fVSAttrs.cstr(); |
| lengths[stringCnt] = segments.fVSAttrs.length(); |
| ++stringCnt; |
| } |
| if (segments.fVaryings.length()) { |
| strings[stringCnt] = segments.fVaryings.cstr(); |
| lengths[stringCnt] = segments.fVaryings.length(); |
| ++stringCnt; |
| } |
| |
| GrAssert(segments.fVSCode.length()); |
| strings[stringCnt] = segments.fVSCode.cstr(); |
| lengths[stringCnt] = segments.fVSCode.length(); |
| ++stringCnt; |
| |
| #if PRINT_SHADERS |
| GrPrintf("%s%s%s%s\n", |
| segments.fVSUnis.cstr(), |
| segments.fVSAttrs.cstr(), |
| segments.fVaryings.cstr(), |
| segments.fVSCode.cstr()); |
| #endif |
| program->fVShaderID = CompileShader(GL_VERTEX_SHADER, |
| stringCnt, |
| strings, |
| lengths); |
| |
| stringCnt = 0; |
| |
| if (GR_ARRAY_COUNT(GR_SHADER_PRECISION) > 1) { |
| strings[stringCnt] = GR_SHADER_PRECISION; |
| lengths[stringCnt] = GR_ARRAY_COUNT(GR_SHADER_PRECISION) - 1; |
| ++stringCnt; |
| } |
| if (segments.fFSUnis.length()) { |
| strings[stringCnt] = segments.fFSUnis.cstr(); |
| lengths[stringCnt] = segments.fFSUnis.length(); |
| ++stringCnt; |
| } |
| if (segments.fVaryings.length()) { |
| strings[stringCnt] = segments.fVaryings.cstr(); |
| lengths[stringCnt] = segments.fVaryings.length(); |
| ++stringCnt; |
| } |
| |
| GrAssert(segments.fFSCode.length()); |
| strings[stringCnt] = segments.fFSCode.cstr(); |
| lengths[stringCnt] = segments.fFSCode.length(); |
| ++stringCnt; |
| |
| #if PRINT_SHADERS |
| GrPrintf("%s%s%s%s\n", |
| GR_SHADER_PRECISION, |
| segments.fFSUnis.cstr(), |
| segments.fVaryings.cstr(), |
| segments.fFSCode.cstr()); |
| #endif |
| program->fFShaderID = CompileShader(GL_FRAGMENT_SHADER, |
| stringCnt, |
| strings, |
| lengths); |
| |
| program->fProgramID = GR_GL(CreateProgram()); |
| const GLint& progID = program->fProgramID; |
| |
| GR_GL(AttachShader(progID, program->fVShaderID)); |
| GR_GL(AttachShader(progID, program->fFShaderID)); |
| |
| // Bind the attrib locations to same values for all shaders |
| GR_GL(BindAttribLocation(progID, POS_ATTR_LOCATION, POS_ATTR_NAME)); |
| for (int t = 0; t < kMaxTexCoords; ++t) { |
| if (texCoordAttrs[t].length()) { |
| GR_GL(BindAttribLocation(progID, |
| TEX_ATTR_LOCATION(t), |
| texCoordAttrs[t].cstr())); |
| } |
| } |
| |
| #if ATTRIBUTE_MATRIX |
| // set unis to a bogus value so that checks against -1 before |
| // flushing will pass. |
| GR_GL(BindAttribLocation(progID, |
| VIEWMAT_ATTR_LOCATION, |
| VIEW_MATRIX_NAME)); |
| |
| program->fUniLocations.fViewMatrixUni = BOGUS_MATRIX_UNI_LOCATION; |
| |
| for (int s = 0; s < kNumStages; ++s) { |
| if (desc.fStages[s].fEnabled) { |
| GrStringBuilder matName; |
| tex_matrix_name(s, &matName); |
| GR_GL(BindAttribLocation(progID, |
| TEXMAT_ATTR_LOCATION(s), |
| matName.cstr())); |
| program->fUniLocations.fStages[s].fTextureMatrixUni = |
| BOGUS_MATRIX_UNI_LOCATION; |
| } |
| } |
| #endif |
| |
| GR_GL(BindAttribLocation(progID, COL_ATTR_LOCATION, COL_ATTR_NAME)); |
| |
| GR_GL(LinkProgram(progID)); |
| |
| GLint linked = GR_GL_INIT_ZERO; |
| GR_GL(GetProgramiv(progID, GL_LINK_STATUS, &linked)); |
| if (!linked) { |
| GLint infoLen = GR_GL_INIT_ZERO; |
| GR_GL(GetProgramiv(progID, GL_INFO_LOG_LENGTH, &infoLen)); |
| GrAutoMalloc log(sizeof(char)*(infoLen+1)); // outside if for debugger |
| if (infoLen > 0) { |
| GR_GL(GetProgramInfoLog(progID, |
| infoLen+1, |
| NULL, |
| (char*)log.get())); |
| GrPrintf((char*)log.get()); |
| } |
| GrAssert(!"Error linking program"); |
| GR_GL(DeleteProgram(progID)); |
| program->fProgramID = 0; |
| return; |
| } |
| |
| // Get uniform locations |
| #if !ATTRIBUTE_MATRIX |
| program->fUniLocations.fViewMatrixUni = |
| GR_GL(GetUniformLocation(progID, VIEW_MATRIX_NAME)); |
| GrAssert(-1 != program->fUniLocations.fViewMatrixUni); |
| #endif |
| for (int s = 0; s < kNumStages; ++s) { |
| StageUniLocations& locations = program->fUniLocations.fStages[s]; |
| if (desc.fStages[s].fEnabled) { |
| #if !ATTRIBUTE_MATRIX |
| if (locations.fTextureMatrixUni) { |
| GrTokenString texMName; |
| tex_matrix_name(s, &texMName); |
| locations.fTextureMatrixUni = GR_GL(GetUniformLocation( |
| progID, |
| texMName.cstr())); |
| GrAssert(-1 != locations.fTextureMatrixUni); |
| } else { |
| locations.fTextureMatrixUni = -1; |
| |
| } |
| #endif |
| |
| if (locations.fSamplerUni) { |
| GrTokenString samplerName; |
| sampler_name(s, &samplerName); |
| locations.fSamplerUni = GR_GL(GetUniformLocation( |
| progID, |
| samplerName.cstr())); |
| GrAssert(-1 != locations.fSamplerUni); |
| } else { |
| locations.fSamplerUni = -1; |
| } |
| |
| if (locations.fRadial2Uni) { |
| GrTokenString radial2ParamName; |
| radial2_param_name(s, &radial2ParamName); |
| locations.fRadial2Uni = GR_GL(GetUniformLocation( |
| progID, |
| radial2ParamName.cstr())); |
| GrAssert(-1 != locations.fRadial2Uni); |
| } else { |
| locations.fRadial2Uni = -1; |
| } |
| } else { |
| locations.fSamplerUni = -1; |
| locations.fRadial2Uni = -1; |
| locations.fTextureMatrixUni = -1; |
| } |
| } |
| GR_GL(UseProgram(progID)); |
| |
| // init sampler unis and set bogus values for state tracking |
| for (int s = 0; s < kNumStages; ++s) { |
| if (-1 != program->fUniLocations.fStages[s].fSamplerUni) { |
| GR_GL(Uniform1i(program->fUniLocations.fStages[s].fSamplerUni, s)); |
| } |
| program->fTextureMatrices[s] = GrMatrix::InvalidMatrix(); |
| program->fRadial2CenterX1[s] = GR_ScalarMax; |
| program->fRadial2Radius0[s] = -GR_ScalarMax; |
| } |
| program->fViewMatrix = GrMatrix::InvalidMatrix(); |
| } |
| |
| void GrGpuGLShaders2::getProgramDesc(GrPrimitiveType primType, ProgramDesc* desc) { |
| |
| // Must initialize all fields or cache will have false negatives! |
| desc->fVertexLayout = fGeometrySrc.fVertexLayout; |
| |
| desc->fOptFlags = 0; |
| if (kPoints_PrimitiveType != primType) { |
| desc->fOptFlags |= ProgramDesc::kNotPoints_OptFlagBit; |
| } |
| #if GR_AGGRESSIVE_SHADER_OPTS |
| if (!(desc->fVertexLayout & kColor_VertexLayoutBit) && |
| (0xffffffff == fCurrDrawState.fColor)) { |
| desc->fOptFlags |= ProgramDesc::kVertexColorAllOnes_OptFlagBit; |
| } |
| #endif |
| |
| for (int s = 0; s < kNumStages; ++s) { |
| StageDesc& stage = desc->fStages[s]; |
| |
| stage.fEnabled = VertexUsesStage(s, fGeometrySrc.fVertexLayout); |
| |
| if (stage.fEnabled) { |
| GrGLTexture* texture = (GrGLTexture*) fCurrDrawState.fTextures[s]; |
| GrAssert(NULL != texture); |
| // we matrix to invert when orientation is TopDown, so make sure |
| // we aren't in that case before flagging as identity. |
| if (TextureMatrixIsIdentity(texture, fCurrDrawState.fSamplerStates[s])) { |
| stage.fOptFlags = StageDesc::kIdentityMatrix_OptFlagBit; |
| } else if (!getSamplerMatrix(s).hasPerspective()) { |
| stage.fOptFlags = StageDesc::kNoPerspective_OptFlagBit; |
| } else { |
| stage.fOptFlags = 0; |
| } |
| switch (fCurrDrawState.fSamplerStates[s].getSampleMode()) { |
| case GrSamplerState::kNormal_SampleMode: |
| stage.fCoordMapping = StageDesc::kIdentity_CoordMapping; |
| break; |
| case GrSamplerState::kRadial_SampleMode: |
| stage.fCoordMapping = StageDesc::kRadialGradient_CoordMapping; |
| break; |
| case GrSamplerState::kRadial2_SampleMode: |
| stage.fCoordMapping = StageDesc::kRadial2Gradient_CoordMapping; |
| break; |
| case GrSamplerState::kSweep_SampleMode: |
| stage.fCoordMapping = StageDesc::kSweepGradient_CoordMapping; |
| break; |
| default: |
| GrAssert(!"Unexpected sample mode!"); |
| break; |
| } |
| if (GrTexture::kAlpha_8_PixelConfig == texture->config()) { |
| stage.fModulation = StageDesc::kAlpha_Modulation; |
| } else { |
| stage.fModulation = StageDesc::kColor_Modulation; |
| } |
| } else { |
| stage.fOptFlags = 0; |
| stage.fCoordMapping = (StageDesc::CoordMapping)0; |
| stage.fModulation = (StageDesc::Modulation)0; |
| } |
| } |
| } |
| |
| GLuint GrGpuGLShaders2::CompileShader(GLenum type, |
| int stringCnt, |
| const char** strings, |
| int* stringLengths) { |
| GLuint shader = GR_GL(CreateShader(type)); |
| if (0 == shader) { |
| return 0; |
| } |
| |
| GLint compiled = GR_GL_INIT_ZERO; |
| GR_GL(ShaderSource(shader, stringCnt, strings, stringLengths)); |
| GR_GL(CompileShader(shader)); |
| GR_GL(GetShaderiv(shader, GL_COMPILE_STATUS, &compiled)); |
| |
| if (!compiled) { |
| GLint infoLen = GR_GL_INIT_ZERO; |
| GR_GL(GetShaderiv(shader, GL_INFO_LOG_LENGTH, &infoLen)); |
| GrAutoMalloc log(sizeof(char)*(infoLen+1)); // outside if for debugger |
| if (infoLen > 0) { |
| GR_GL(GetShaderInfoLog(shader, infoLen+1, NULL, (char*)log.get())); |
| for (int i = 0; i < stringCnt; ++i) { |
| if (NULL == stringLengths || stringLengths[i] < 0) { |
| GrPrintf(strings[i]); |
| } else { |
| GrPrintf("%.*s", stringLengths[i], strings[i]); |
| } |
| } |
| GrPrintf("\n%s", log.get()); |
| } |
| GrAssert(!"Shader compilation failed!"); |
| GR_GL(DeleteShader(shader)); |
| return 0; |
| } |
| return shader; |
| } |
| |
| void GrGpuGLShaders2::DeleteProgram(Program* program) { |
| GR_GL(DeleteShader(program->fVShaderID)); |
| GR_GL(DeleteShader(program->fFShaderID)); |
| GR_GL(DeleteProgram(program->fProgramID)); |
| GR_DEBUGCODE(memset(program, 0, sizeof(Program))); |
| } |
| |
| |
| GrGpuGLShaders2::GrGpuGLShaders2() { |
| |
| fProgram = NULL; |
| fProgramCache = new ProgramCache(); |
| |
| #if 0 |
| ProgramUnitTest(); |
| #endif |
| } |
| |
| GrGpuGLShaders2::~GrGpuGLShaders2() { |
| delete fProgramCache; |
| } |
| |
| const GrMatrix& GrGpuGLShaders2::getHWSamplerMatrix(int stage) { |
| #if ATTRIBUTE_MATRIX |
| return fHWDrawState.fSamplerStates[stage].getMatrix(); |
| #else |
| return fProgram->fTextureMatrices[stage]; |
| #endif |
| } |
| |
| void GrGpuGLShaders2::recordHWSamplerMatrix(int stage, const GrMatrix& matrix){ |
| #if ATTRIBUTE_MATRIX |
| fHWDrawState.fSamplerStates[stage].setMatrix(matrix); |
| #else |
| fProgram->fTextureMatrices[stage] = matrix; |
| #endif |
| } |
| |
| void GrGpuGLShaders2::resetContext() { |
| |
| INHERITED::resetContext(); |
| |
| fHWGeometryState.fVertexLayout = 0; |
| fHWGeometryState.fVertexOffset = ~0; |
| GR_GL(DisableVertexAttribArray(COL_ATTR_LOCATION)); |
| for (int t = 0; t < kMaxTexCoords; ++t) { |
| GR_GL(DisableVertexAttribArray(TEX_ATTR_LOCATION(t))); |
| } |
| GR_GL(EnableVertexAttribArray(POS_ATTR_LOCATION)); |
| |
| fHWProgramID = 0; |
| } |
| |
| void GrGpuGLShaders2::flushViewMatrix() { |
| GrAssert(NULL != fCurrDrawState.fRenderTarget); |
| GrMatrix m ( |
| GrIntToScalar(2) / fCurrDrawState.fRenderTarget->width(), 0, -GR_Scalar1, |
| 0,-GrIntToScalar(2) / fCurrDrawState.fRenderTarget->height(), GR_Scalar1, |
| 0, 0, GrMatrix::I()[8]); |
| m.setConcat(m, fCurrDrawState.fViewMatrix); |
| |
| // ES doesn't allow you to pass true to the transpose param, |
| // so do our own transpose |
| GrScalar mt[] = { |
| m[GrMatrix::kScaleX], |
| m[GrMatrix::kSkewY], |
| m[GrMatrix::kPersp0], |
| m[GrMatrix::kSkewX], |
| m[GrMatrix::kScaleY], |
| m[GrMatrix::kPersp1], |
| m[GrMatrix::kTransX], |
| m[GrMatrix::kTransY], |
| m[GrMatrix::kPersp2] |
| }; |
| #if ATTRIBUTE_MATRIX |
| GR_GL(VertexAttrib4fv(VIEWMAT_ATTR_LOCATION+0, mt+0)); |
| GR_GL(VertexAttrib4fv(VIEWMAT_ATTR_LOCATION+1, mt+3)); |
| GR_GL(VertexAttrib4fv(VIEWMAT_ATTR_LOCATION+2, mt+6)); |
| #else |
| GR_GL(UniformMatrix3fv(fProgram->fUniLocations.fViewMatrixUni,1,false,mt)); |
| #endif |
| } |
| |
| void GrGpuGLShaders2::flushTextureMatrix(int stage) { |
| GrAssert(NULL != fCurrDrawState.fTextures[stage]); |
| |
| GrGLTexture* texture = (GrGLTexture*) fCurrDrawState.fTextures[stage]; |
| |
| GrMatrix m = getSamplerMatrix(stage); |
| GrSamplerState::SampleMode mode = |
| fCurrDrawState.fSamplerStates[0].getSampleMode(); |
| AdjustTextureMatrix(texture, mode, &m); |
| |
| // ES doesn't allow you to pass true to the transpose param, |
| // so do our own transpose |
| GrScalar mt[] = { |
| m[GrMatrix::kScaleX], |
| m[GrMatrix::kSkewY], |
| m[GrMatrix::kPersp0], |
| m[GrMatrix::kSkewX], |
| m[GrMatrix::kScaleY], |
| m[GrMatrix::kPersp1], |
| m[GrMatrix::kTransX], |
| m[GrMatrix::kTransY], |
| m[GrMatrix::kPersp2] |
| }; |
| #if ATTRIBUTE_MATRIX |
| GR_GL(VertexAttrib4fv(TEXMAT_ATTR_LOCATION(0)+0, mt+0)); |
| GR_GL(VertexAttrib4fv(TEXMAT_ATTR_LOCATION(0)+1, mt+3)); |
| GR_GL(VertexAttrib4fv(TEXMAT_ATTR_LOCATION(0)+2, mt+6)); |
| #else |
| GR_GL(UniformMatrix3fv(fProgram->fUniLocations.fStages[stage].fTextureMatrixUni, |
| 1, false, mt)); |
| #endif |
| } |
| |
| void GrGpuGLShaders2::flushRadial2(int stage) { |
| |
| const GrSamplerState& sampler = fCurrDrawState.fSamplerStates[stage]; |
| |
| GrScalar centerX1 = sampler.getRadial2CenterX1(); |
| GrScalar radius0 = sampler.getRadial2Radius0(); |
| |
| GrScalar a = GrMul(centerX1, centerX1) - GR_Scalar1; |
| |
| float unis[6] = { |
| GrScalarToFloat(a), |
| 1 / (2.f * unis[0]), |
| GrScalarToFloat(centerX1), |
| GrScalarToFloat(radius0), |
| GrScalarToFloat(GrMul(radius0, radius0)), |
| sampler.isRadial2PosRoot() ? 1.f : -1.f |
| }; |
| GR_GL(Uniform1fv(fProgram->fUniLocations.fStages[stage].fRadial2Uni, |
| 6, |
| unis)); |
| } |
| |
| void GrGpuGLShaders2::flushProgram(GrPrimitiveType type) { |
| ProgramDesc desc; |
| getProgramDesc(type, &desc); |
| fProgram = fProgramCache->getProgram(desc); |
| |
| if (fHWProgramID != fProgram->fProgramID) { |
| GR_GL(UseProgram(fProgram->fProgramID)); |
| fHWProgramID = fProgram->fProgramID; |
| #if GR_COLLECT_STATS |
| ++fStats.fProgChngCnt; |
| #endif |
| } |
| } |
| |
| bool GrGpuGLShaders2::flushGraphicsState(GrPrimitiveType type) { |
| |
| if (!flushGLStateCommon(type)) { |
| return false; |
| } |
| |
| if (fDirtyFlags.fRenderTargetChanged) { |
| // our coords are in pixel space and the GL matrices map to NDC |
| // so if the viewport changed, our matrix is now wrong. |
| #if ATTRIBUTE_MATRIX |
| fHWDrawState.fViewMatrix = GrMatrix::InvalidMatrix(); |
| #else |
| // we assume all shader matrices may be wrong after viewport changes |
| fProgramCache->invalidateViewMatrices(); |
| #endif |
| } |
| |
| flushProgram(type); |
| |
| if (fGeometrySrc.fVertexLayout & kColor_VertexLayoutBit) { |
| // invalidate the immediate mode color |
| fHWDrawState.fColor = GrColor_ILLEGAL; |
| } else { |
| if (fHWDrawState.fColor != fCurrDrawState.fColor && |
| (!GR_AGGRESSIVE_SHADER_OPTS || 0xffffffff != fCurrDrawState.fColor)) { |
| // avoid pushing the color attrib if the shader will optimize it out |
| |
| // OpenGL ES only supports the float varities of glVertexAttrib |
| float c[] = { |
| GrColorUnpackR(fCurrDrawState.fColor) / 255.f, |
| GrColorUnpackG(fCurrDrawState.fColor) / 255.f, |
| GrColorUnpackB(fCurrDrawState.fColor) / 255.f, |
| GrColorUnpackA(fCurrDrawState.fColor) / 255.f |
| }; |
| GR_GL(VertexAttrib4fv(COL_ATTR_LOCATION, c)); |
| fHWDrawState.fColor = fCurrDrawState.fColor; |
| } |
| } |
| |
| #if ATTRIBUTE_MATRIX |
| GrMatrix& currViewMatrix = fHWDrawState.fViewMatrix; |
| #else |
| GrMatrix& currViewMatrix = fProgram->fViewMatrix; |
| #endif |
| |
| if (currViewMatrix != fCurrDrawState.fViewMatrix) { |
| flushViewMatrix(); |
| currViewMatrix = fCurrDrawState.fViewMatrix; |
| } |
| |
| for (int s = 0; s < kNumStages; ++s) { |
| GrGLTexture* texture = (GrGLTexture*) fCurrDrawState.fTextures[s]; |
| if (NULL != texture) { |
| if (-1 != fProgram->fUniLocations.fStages[s].fTextureMatrixUni && |
| (((1 << s) & fDirtyFlags.fTextureChangedMask) || |
| getHWSamplerMatrix(s) != getSamplerMatrix(s))) { |
| flushTextureMatrix(s); |
| recordHWSamplerMatrix(s, getSamplerMatrix(s)); |
| } |
| } |
| |
| const GrSamplerState& sampler = fCurrDrawState.fSamplerStates[s]; |
| if (-1 != fProgram->fUniLocations.fStages[s].fRadial2Uni && |
| (fProgram->fRadial2CenterX1[s] != sampler.getRadial2CenterX1() || |
| fProgram->fRadial2Radius0[s] != sampler.getRadial2Radius0() || |
| fProgram->fRadial2PosRoot[s] != sampler.isRadial2PosRoot())) { |
| |
| flushRadial2(s); |
| |
| fProgram->fRadial2CenterX1[s] = sampler.getRadial2CenterX1(); |
| fProgram->fRadial2Radius0[s] = sampler.getRadial2Radius0(); |
| fProgram->fRadial2PosRoot[s] = sampler.isRadial2PosRoot(); |
| } |
| } |
| resetDirtyFlags(); |
| return true; |
| } |
| |
| void GrGpuGLShaders2::setupGeometry(int* startVertex, |
| int* startIndex, |
| int vertexCount, |
| int indexCount) { |
| |
| int newColorOffset; |
| int newTexCoordOffsets[kMaxTexCoords]; |
| |
| GLsizei newStride = VertexSizeAndOffsetsByIdx(fGeometrySrc.fVertexLayout, |
| newTexCoordOffsets, |
| &newColorOffset); |
| int oldColorOffset; |
| int oldTexCoordOffsets[kMaxTexCoords]; |
| GLsizei oldStride = VertexSizeAndOffsetsByIdx(fHWGeometryState.fVertexLayout, |
| oldTexCoordOffsets, |
| &oldColorOffset); |
| bool indexed = NULL != startIndex; |
| |
| int extraVertexOffset; |
| int extraIndexOffset; |
| setBuffers(indexed, &extraVertexOffset, &extraIndexOffset); |
| |
| GLenum scalarType; |
| bool texCoordNorm; |
| if (fGeometrySrc.fVertexLayout & kTextFormat_VertexLayoutBit) { |
| scalarType = GrGLTextType; |
| texCoordNorm = GR_GL_TEXT_TEXTURE_NORMALIZED; |
| } else { |
| scalarType = GrGLType; |
| texCoordNorm = false; |
| } |
| |
| size_t vertexOffset = (*startVertex + extraVertexOffset) * newStride; |
| *startVertex = 0; |
| if (indexed) { |
| *startIndex += extraIndexOffset; |
| } |
| |
| // all the Pointers must be set if any of these are true |
| bool allOffsetsChange = fHWGeometryState.fArrayPtrsDirty || |
| vertexOffset != fHWGeometryState.fVertexOffset || |
| newStride != oldStride; |
| |
| // position and tex coord offsets change if above conditions are true |
| // or the type/normalization changed based on text vs nontext type coords. |
| bool posAndTexChange = allOffsetsChange || |
| (((GrGLTextType != GrGLType) || GR_GL_TEXT_TEXTURE_NORMALIZED) && |
| (kTextFormat_VertexLayoutBit & |
| (fHWGeometryState.fVertexLayout ^ |
| fGeometrySrc.fVertexLayout))); |
| |
| if (posAndTexChange) { |
| GR_GL(VertexAttribPointer(POS_ATTR_LOCATION, 2, scalarType, |
| false, newStride, (GLvoid*)vertexOffset)); |
| fHWGeometryState.fVertexOffset = vertexOffset; |
| } |
| |
| for (int t = 0; t < kMaxTexCoords; ++t) { |
| if (newTexCoordOffsets[t] > 0) { |
| GLvoid* texCoordOffset = (GLvoid*)(vertexOffset + newTexCoordOffsets[t]); |
| if (oldTexCoordOffsets[t] <= 0) { |
| GR_GL(EnableVertexAttribArray(TEX_ATTR_LOCATION(t))); |
| GR_GL(VertexAttribPointer(TEX_ATTR_LOCATION(t), 2, scalarType, |
| texCoordNorm, newStride, texCoordOffset)); |
| } else if (posAndTexChange || |
| newTexCoordOffsets[t] != oldTexCoordOffsets[t]) { |
| GR_GL(VertexAttribPointer(TEX_ATTR_LOCATION(t), 2, scalarType, |
| texCoordNorm, newStride, texCoordOffset)); |
| } |
| } else if (oldTexCoordOffsets[t] > 0) { |
| GR_GL(DisableVertexAttribArray(TEX_ATTR_LOCATION(t))); |
| } |
| } |
| |
| if (newColorOffset > 0) { |
| GLvoid* colorOffset = (int8_t*)(vertexOffset + newColorOffset); |
| if (oldColorOffset <= 0) { |
| GR_GL(EnableVertexAttribArray(COL_ATTR_LOCATION)); |
| GR_GL(VertexAttribPointer(COL_ATTR_LOCATION, 4, |
| GL_UNSIGNED_BYTE, |
| true, newStride, colorOffset)); |
| } else if (allOffsetsChange || newColorOffset != oldColorOffset) { |
| GR_GL(VertexAttribPointer(COL_ATTR_LOCATION, 4, |
| GL_UNSIGNED_BYTE, |
| true, newStride, colorOffset)); |
| } |
| } else if (oldColorOffset > 0) { |
| GR_GL(DisableVertexAttribArray(COL_ATTR_LOCATION)); |
| } |
| |
| fHWGeometryState.fVertexLayout = fGeometrySrc.fVertexLayout; |
| fHWGeometryState.fArrayPtrsDirty = false; |
| } |
| #endif |
| |
| |
