skia: Fix build in ISO C++11 mode
Fix macro constructs that could be mistaken for new string literals
Signed-off-by: Bernhard Rosenkraenzer <Bernhard.Rosenkranzer@linaro.org>
diff --git a/gpu/src/GrGLProgram.cpp b/gpu/src/GrGLProgram.cpp
new file mode 100644
index 0000000..47b5fd3
--- /dev/null
+++ b/gpu/src/GrGLProgram.cpp
@@ -0,0 +1,1176 @@
+/*
+ Copyright 2011 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 "GrGLProgram.h"
+
+#include "GrBinHashKey.h"
+#include "GrGLConfig.h"
+#include "GrMemory.h"
+
+#include "SkXfermode.h"
+
+namespace {
+
+const char* GrPrecision() {
+ if (GR_GL_SUPPORT_ES2) {
+ return "mediump";
+ } else {
+ return " ";
+ }
+}
+
+const char* GrShaderPrecision() {
+ if (GR_GL_SUPPORT_ES2) {
+ return "precision mediump float;\n";
+ } else {
+ return "";
+ }
+}
+
+} // namespace
+
+#define PRINT_SHADERS 0
+
+#if GR_GL_ATTRIBUTE_MATRICES
+ #define VIEW_MATRIX_NAME "aViewM"
+#else
+ #define VIEW_MATRIX_NAME "uViewM"
+#endif
+
+#define POS_ATTR_NAME "aPosition"
+#define COL_ATTR_NAME "aColor"
+#define COL_UNI_NAME "uColor"
+#define EDGES_UNI_NAME "uEdges"
+#define COL_FILTER_UNI_NAME "uColorFilter"
+
+static inline void tex_attr_name(int coordIdx, GrStringBuilder* s) {
+ *s = "aTexCoord";
+ s->appendS32(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 inline const char* all_ones_vec(int count) {
+ static const char* ONESVEC[] = {"ERROR", "1.0", "vec2(1,1)",
+ "vec3(1,1,1)", "vec4(1,1,1,1)"};
+ GrAssert(count >= 1 && count < (int)GR_ARRAY_COUNT(ONESVEC));
+ return ONESVEC[count];
+}
+
+static inline const char* all_zeros_vec(int count) {
+ static const char* ZEROSVEC[] = {"ERROR", "0.0", "vec2(0,0)",
+ "vec3(0,0,0)", "vec4(0,0,0,0)"};
+ GrAssert(count >= 1 && count < (int)GR_ARRAY_COUNT(ZEROSVEC));
+ return ZEROSVEC[count];
+}
+
+static inline const char* declared_color_output_name() { return "fsColorOut"; }
+static inline const char* dual_source_output_name() { return "dualSourceOut"; }
+
+static void tex_matrix_name(int stage, GrStringBuilder* s) {
+#if GR_GL_ATTRIBUTE_MATRICES
+ *s = "aTexM";
+#else
+ *s = "uTexM";
+#endif
+ s->appendS32(stage);
+}
+
+static void normalized_texel_size_name(int stage, GrStringBuilder* s) {
+ *s = "uTexelSize";
+ s->appendS32(stage);
+}
+
+static void sampler_name(int stage, GrStringBuilder* s) {
+ *s = "uSampler";
+ s->appendS32(stage);
+}
+
+static void stage_varying_name(int stage, GrStringBuilder* s) {
+ *s = "vStage";
+ s->appendS32(stage);
+}
+
+static void radial2_param_name(int stage, GrStringBuilder* s) {
+ *s = "uRadial2Params";
+ s->appendS32(stage);
+}
+
+static void radial2_varying_name(int stage, GrStringBuilder* s) {
+ *s = "vB";
+ s->appendS32(stage);
+}
+
+static void tex_domain_name(int stage, GrStringBuilder* s) {
+ *s = "uTexDom";
+ s->appendS32(stage);
+}
+
+GrGLProgram::GrGLProgram() {
+}
+
+GrGLProgram::~GrGLProgram() {
+}
+
+void GrGLProgram::overrideBlend(GrBlendCoeff* srcCoeff,
+ GrBlendCoeff* dstCoeff) const {
+ switch (fProgramDesc.fDualSrcOutput) {
+ case ProgramDesc::kNone_DualSrcOutput:
+ break;
+ // the prog will write a coverage value to the secondary
+ // output and the dst is blended by one minus that value.
+ case ProgramDesc::kCoverage_DualSrcOutput:
+ case ProgramDesc::kCoverageISA_DualSrcOutput:
+ case ProgramDesc::kCoverageISC_DualSrcOutput:
+ *dstCoeff = (GrBlendCoeff)GrGpu::kIS2C_BlendCoeff;
+ break;
+ default:
+ GrCrash("Unexpected dual source blend output");
+ break;
+ }
+}
+
+void GrGLProgram::buildKey(GrBinHashKeyBuilder& key) const {
+ // Add stage configuration to the key
+ key.keyData(reinterpret_cast<const uint32_t*>(&fProgramDesc), sizeof(ProgramDesc));
+}
+
+// assigns modulation of two vars to an output var
+// vars can be vec4s or floats (or one of each)
+// result is always vec4
+// if either var is "" then assign to the other var
+// if both are "" then assign all ones
+static inline void modulate_helper(const char* outputVar,
+ const char* var0,
+ const char* var1,
+ GrStringBuilder* code) {
+ GrAssert(NULL != outputVar);
+ GrAssert(NULL != var0);
+ GrAssert(NULL != var1);
+ GrAssert(NULL != code);
+
+ bool has0 = '\0' != *var0;
+ bool has1 = '\0' != *var1;
+
+ if (!has0 && !has1) {
+ code->appendf("\t%s = %s;\n", outputVar, all_ones_vec(4));
+ } else if (!has0) {
+ code->appendf("\t%s = vec4(%s);\n", outputVar, var1);
+ } else if (!has1) {
+ code->appendf("\t%s = vec4(%s);\n", outputVar, var0);
+ } else {
+ code->appendf("\t%s = vec4(%s * %s);\n", outputVar, var0, var1);
+ }
+}
+
+// assigns addition of two vars to an output var
+// vars can be vec4s or floats (or one of each)
+// result is always vec4
+// if either var is "" then assign to the other var
+// if both are "" then assign all zeros
+static inline void add_helper(const char* outputVar,
+ const char* var0,
+ const char* var1,
+ GrStringBuilder* code) {
+ GrAssert(NULL != outputVar);
+ GrAssert(NULL != var0);
+ GrAssert(NULL != var1);
+ GrAssert(NULL != code);
+
+ bool has0 = '\0' != *var0;
+ bool has1 = '\0' != *var1;
+
+ if (!has0 && !has1) {
+ code->appendf("\t%s = %s;\n", outputVar, all_zeros_vec(4));
+ } else if (!has0) {
+ code->appendf("\t%s = vec4(%s);\n", outputVar, var1);
+ } else if (!has1) {
+ code->appendf("\t%s = vec4(%s);\n", outputVar, var0);
+ } else {
+ code->appendf("\t%s = vec4(%s + %s);\n", outputVar, var0, var1);
+ }
+}
+
+// given two blend coeffecients determine whether the src
+// and/or dst computation can be omitted.
+static inline void needBlendInputs(SkXfermode::Coeff srcCoeff,
+ SkXfermode::Coeff dstCoeff,
+ bool* needSrcValue,
+ bool* needDstValue) {
+ if (SkXfermode::kZero_Coeff == srcCoeff) {
+ switch (dstCoeff) {
+ // these all read the src
+ case SkXfermode::kSC_Coeff:
+ case SkXfermode::kISC_Coeff:
+ case SkXfermode::kSA_Coeff:
+ case SkXfermode::kISA_Coeff:
+ *needSrcValue = true;
+ break;
+ default:
+ *needSrcValue = false;
+ break;
+ }
+ } else {
+ *needSrcValue = true;
+ }
+ if (SkXfermode::kZero_Coeff == dstCoeff) {
+ switch (srcCoeff) {
+ // these all read the dst
+ case SkXfermode::kDC_Coeff:
+ case SkXfermode::kIDC_Coeff:
+ case SkXfermode::kDA_Coeff:
+ case SkXfermode::kIDA_Coeff:
+ *needDstValue = true;
+ break;
+ default:
+ *needDstValue = false;
+ break;
+ }
+ } else {
+ *needDstValue = true;
+ }
+}
+
+/**
+ * Create a blend_coeff * value string to be used in shader code. Sets empty
+ * string if result is trivially zero.
+ */
+static void blendTermString(GrStringBuilder* str, SkXfermode::Coeff coeff,
+ const char* src, const char* dst,
+ const char* value) {
+ switch (coeff) {
+ case SkXfermode::kZero_Coeff: /** 0 */
+ *str = "";
+ break;
+ case SkXfermode::kOne_Coeff: /** 1 */
+ *str = value;
+ break;
+ case SkXfermode::kSC_Coeff:
+ str->printf("(%s * %s)", src, value);
+ break;
+ case SkXfermode::kISC_Coeff:
+ str->printf("((%s - %s) * %s)", all_ones_vec(4), src, value);
+ break;
+ case SkXfermode::kDC_Coeff:
+ str->printf("(%s * %s)", dst, value);
+ break;
+ case SkXfermode::kIDC_Coeff:
+ str->printf("((%s - %s) * %s)", all_ones_vec(4), dst, value);
+ break;
+ case SkXfermode::kSA_Coeff: /** src alpha */
+ str->printf("(%s.a * %s)", src, value);
+ break;
+ case SkXfermode::kISA_Coeff: /** inverse src alpha (i.e. 1 - sa) */
+ str->printf("((1.0 - %s.a) * %s)", src, value);
+ break;
+ case SkXfermode::kDA_Coeff: /** dst alpha */
+ str->printf("(%s.a * %s)", dst, value);
+ break;
+ case SkXfermode::kIDA_Coeff: /** inverse dst alpha (i.e. 1 - da) */
+ str->printf("((1.0 - %s.a) * %s)", dst, value);
+ break;
+ default:
+ GrCrash("Unexpected xfer coeff.");
+ break;
+ }
+}
+/**
+ * Adds a line to the fragment shader code which modifies the color by
+ * the specified color filter.
+ */
+static void addColorFilter(GrStringBuilder* fsCode, const char * outputVar,
+ SkXfermode::Coeff uniformCoeff,
+ SkXfermode::Coeff colorCoeff,
+ const char* inColor) {
+ GrStringBuilder colorStr, constStr;
+ blendTermString(&colorStr, colorCoeff, COL_FILTER_UNI_NAME,
+ inColor, inColor);
+ blendTermString(&constStr, uniformCoeff, COL_FILTER_UNI_NAME,
+ inColor, COL_FILTER_UNI_NAME);
+
+ add_helper(outputVar, colorStr.c_str(), constStr.c_str(), fsCode);
+}
+
+bool GrGLProgram::genProgram(GrGLProgram::CachedData* programData) const {
+
+ ShaderCodeSegments segments;
+ const uint32_t& layout = fProgramDesc.fVertexLayout;
+
+ programData->fUniLocations.reset();
+
+ SkXfermode::Coeff colorCoeff, uniformCoeff;
+ // The rest of transfer mode color filters have not been implemented
+ if (fProgramDesc.fColorFilterXfermode < SkXfermode::kCoeffModesCnt) {
+ GR_DEBUGCODE(bool success =)
+ SkXfermode::ModeAsCoeff(static_cast<SkXfermode::Mode>
+ (fProgramDesc.fColorFilterXfermode),
+ &uniformCoeff, &colorCoeff);
+ GR_DEBUGASSERT(success);
+ } else {
+ colorCoeff = SkXfermode::kOne_Coeff;
+ uniformCoeff = SkXfermode::kZero_Coeff;
+ }
+
+ bool needColorFilterUniform;
+ bool needComputedColor;
+ needBlendInputs(uniformCoeff, colorCoeff,
+ &needColorFilterUniform, &needComputedColor);
+
+ // the dual source output has no canonical var name, have to
+ // declare an output, which is incompatible with gl_FragColor/gl_FragData.
+ const char* fsColorOutput;
+ bool dualSourceOutputWritten = false;
+ bool usingDeclaredOutputs = ProgramDesc::kNone_DualSrcOutput !=
+ fProgramDesc.fDualSrcOutput;
+ if (usingDeclaredOutputs) {
+ GrAssert(0 == segments.fHeader.size());
+ segments.fHeader.printf("#version 150\n");
+ fsColorOutput = declared_color_output_name();
+ segments.fFSOutputs.appendf("out vec4 %s;\n", fsColorOutput);
+ } else {
+ fsColorOutput = "gl_FragColor";
+ }
+
+#if GR_GL_ATTRIBUTE_MATRICES
+ segments.fVSAttrs += "attribute mat3 " VIEW_MATRIX_NAME ";\n";
+ programData->fUniLocations.fViewMatrixUni = kSetAsAttribute;
+#else
+ segments.fVSUnis += "uniform mat3 " VIEW_MATRIX_NAME ";\n";
+ programData->fUniLocations.fViewMatrixUni = kUseUniform;
+#endif
+ segments.fVSAttrs += "attribute vec2 " POS_ATTR_NAME ";\n";
+
+ segments.fVSCode.append(
+ "void main() {\n"
+ "\tvec3 pos3 = " VIEW_MATRIX_NAME " * vec3(" POS_ATTR_NAME ", 1);\n"
+ "\tgl_Position = vec4(pos3.xy, 0, pos3.z);\n");
+
+ // incoming color to current stage being processed.
+ GrStringBuilder inColor;
+
+ if (needComputedColor) {
+ switch (fProgramDesc.fColorType) {
+ case ProgramDesc::kAttribute_ColorType:
+ segments.fVSAttrs.append( "attribute vec4 " COL_ATTR_NAME ";\n");
+ segments.fVaryings.append("varying vec4 vColor;\n");
+ segments.fVSCode.append( "\tvColor = " COL_ATTR_NAME ";\n");
+ inColor = "vColor";
+ break;
+ case ProgramDesc::kUniform_ColorType:
+ segments.fFSUnis.append( "uniform vec4 " COL_UNI_NAME ";\n");
+ programData->fUniLocations.fColorUni = kUseUniform;
+ inColor = COL_UNI_NAME;
+ break;
+ default:
+ GrAssert(ProgramDesc::kNone_ColorType == fProgramDesc.fColorType);
+ break;
+ }
+ }
+
+ if (fProgramDesc.fEmitsPointSize){
+ segments.fVSCode.append("\tgl_PointSize = 1.0;\n");
+ }
+
+ segments.fFSCode.append("void main() {\n");
+
+ // add texture coordinates that are used to the list of vertex attr decls
+ GrStringBuilder texCoordAttrs[GrDrawTarget::kMaxTexCoords];
+ for (int t = 0; t < GrDrawTarget::kMaxTexCoords; ++t) {
+ if (GrDrawTarget::VertexUsesTexCoordIdx(t, layout)) {
+ tex_attr_name(t, texCoordAttrs + t);
+ segments.fVSAttrs.appendf("attribute vec2 %s;\n", texCoordAttrs[t].c_str());
+ }
+ }
+
+ ///////////////////////////////////////////////////////////////////////////
+ // compute the final color
+
+ // if we have color stages string them together, feeding the output color
+ // of each to the next and generating code for each stage.
+ if (needComputedColor) {
+ GrStringBuilder outColor;
+ for (int s = 0; s < fProgramDesc.fFirstCoverageStage; ++s) {
+ if (fProgramDesc.fStages[s].isEnabled()) {
+ // create var to hold stage result
+ outColor = "color";
+ outColor.appendS32(s);
+ segments.fFSCode.appendf("\tvec4 %s;\n", outColor.c_str());
+
+ const char* inCoords;
+ // figure out what our input coords are
+ if (GrDrawTarget::StagePosAsTexCoordVertexLayoutBit(s) &
+ layout) {
+ inCoords = POS_ATTR_NAME;
+ } else {
+ int tcIdx = GrDrawTarget::VertexTexCoordsForStage(s, layout);
+ // we better have input tex coordinates if stage is enabled.
+ GrAssert(tcIdx >= 0);
+ GrAssert(texCoordAttrs[tcIdx].size());
+ inCoords = texCoordAttrs[tcIdx].c_str();
+ }
+
+ genStageCode(s,
+ fProgramDesc.fStages[s],
+ inColor.size() ? inColor.c_str() : NULL,
+ outColor.c_str(),
+ inCoords,
+ &segments,
+ &programData->fUniLocations.fStages[s]);
+ inColor = outColor;
+ }
+ }
+ }
+
+ // if have all ones for the "dst" input to the color filter then we can make
+ // additional optimizations.
+ if (needColorFilterUniform && !inColor.size() &&
+ (SkXfermode::kIDC_Coeff == uniformCoeff ||
+ SkXfermode::kIDA_Coeff == uniformCoeff)) {
+ uniformCoeff = SkXfermode::kZero_Coeff;
+ bool bogus;
+ needBlendInputs(SkXfermode::kZero_Coeff, colorCoeff,
+ &needColorFilterUniform, &bogus);
+ }
+ if (needColorFilterUniform) {
+ segments.fFSUnis.append( "uniform vec4 " COL_FILTER_UNI_NAME ";\n");
+ programData->fUniLocations.fColorFilterUni = kUseUniform;
+ }
+
+ bool wroteFragColorZero = false;
+ if (SkXfermode::kZero_Coeff == uniformCoeff &&
+ SkXfermode::kZero_Coeff == colorCoeff) {
+ segments.fFSCode.appendf("\t%s = %s;\n",
+ fsColorOutput,
+ all_zeros_vec(4));
+ wroteFragColorZero = true;
+ } else if (SkXfermode::kDst_Mode != fProgramDesc.fColorFilterXfermode) {
+ segments.fFSCode.appendf("\tvec4 filteredColor;\n");
+ const char* color = inColor.size() ? inColor.c_str() : all_ones_vec(4);
+ addColorFilter(&segments.fFSCode, "filteredColor", uniformCoeff,
+ colorCoeff, color);
+ inColor = "filteredColor";
+ }
+
+ ///////////////////////////////////////////////////////////////////////////
+ // compute the partial coverage (coverage stages and edge aa)
+
+ GrStringBuilder inCoverage;
+
+ // we don't need to compute coverage at all if we know the final shader
+ // output will be zero and we don't have a dual src blend output.
+ if (!wroteFragColorZero ||
+ ProgramDesc::kNone_DualSrcOutput != fProgramDesc.fDualSrcOutput) {
+ if (fProgramDesc.fEdgeAANumEdges > 0) {
+ segments.fFSUnis.append("uniform vec3 " EDGES_UNI_NAME "[");
+ segments.fFSUnis.appendS32(fProgramDesc.fEdgeAANumEdges);
+ segments.fFSUnis.append("];\n");
+ programData->fUniLocations.fEdgesUni = kUseUniform;
+ int count = fProgramDesc.fEdgeAANumEdges;
+ segments.fFSCode.append(
+ "\tvec3 pos = vec3(gl_FragCoord.xy, 1);\n");
+ for (int i = 0; i < count; i++) {
+ segments.fFSCode.append("\tfloat a");
+ segments.fFSCode.appendS32(i);
+ segments.fFSCode.append(" = clamp(dot(" EDGES_UNI_NAME "[");
+ segments.fFSCode.appendS32(i);
+ segments.fFSCode.append("], pos), 0.0, 1.0);\n");
+ }
+ segments.fFSCode.append("\tfloat edgeAlpha = ");
+ for (int i = 0; i < count - 1; i++) {
+ segments.fFSCode.append("min(a");
+ segments.fFSCode.appendS32(i);
+ segments.fFSCode.append(" * a");
+ segments.fFSCode.appendS32(i + 1);
+ segments.fFSCode.append(", ");
+ }
+ segments.fFSCode.append("a");
+ segments.fFSCode.appendS32(count - 1);
+ segments.fFSCode.append(" * a0");
+ for (int i = 0; i < count - 1; i++) {
+ segments.fFSCode.append(")");
+ }
+ segments.fFSCode.append(";\n");
+ inCoverage = "edgeAlpha";
+ }
+
+ GrStringBuilder outCoverage;
+ const int& startStage = fProgramDesc.fFirstCoverageStage;
+ for (int s = startStage; s < GrDrawTarget::kNumStages; ++s) {
+ if (fProgramDesc.fStages[s].isEnabled()) {
+ // create var to hold stage output
+ outCoverage = "coverage";
+ outCoverage.appendS32(s);
+ segments.fFSCode.appendf("\tvec4 %s;\n", outCoverage.c_str());
+
+ const char* inCoords;
+ // figure out what our input coords are
+ if (GrDrawTarget::StagePosAsTexCoordVertexLayoutBit(s) & layout) {
+ inCoords = POS_ATTR_NAME;
+ } else {
+ int tcIdx = GrDrawTarget::VertexTexCoordsForStage(s, layout);
+ // we better have input tex coordinates if stage is enabled.
+ GrAssert(tcIdx >= 0);
+ GrAssert(texCoordAttrs[tcIdx].size());
+ inCoords = texCoordAttrs[tcIdx].c_str();
+ }
+
+ genStageCode(s,
+ fProgramDesc.fStages[s],
+ inCoverage.size() ? inCoverage.c_str() : NULL,
+ outCoverage.c_str(),
+ inCoords,
+ &segments,
+ &programData->fUniLocations.fStages[s]);
+ inCoverage = outCoverage;
+ }
+ }
+ if (ProgramDesc::kNone_DualSrcOutput != fProgramDesc.fDualSrcOutput) {
+ segments.fFSOutputs.appendf("out vec4 %s;\n",
+ dual_source_output_name());
+ bool outputIsZero = false;
+ GrStringBuilder coeff;
+ if (ProgramDesc::kCoverage_DualSrcOutput !=
+ fProgramDesc.fDualSrcOutput && !wroteFragColorZero) {
+ if (!inColor.size()) {
+ outputIsZero = true;
+ } else {
+ if (fProgramDesc.fDualSrcOutput ==
+ ProgramDesc::kCoverageISA_DualSrcOutput) {
+ coeff.printf("(1 - %s.a)", inColor.c_str());
+ } else {
+ coeff.printf("(vec4(1,1,1,1) - %s)", inColor.c_str());
+ }
+ }
+ }
+ if (outputIsZero) {
+ segments.fFSCode.appendf("\t%s = %s;\n",
+ dual_source_output_name(),
+ all_zeros_vec(4));
+ } else {
+ modulate_helper(dual_source_output_name(),
+ coeff.c_str(),
+ inCoverage.c_str(),
+ &segments.fFSCode);
+ }
+ dualSourceOutputWritten = true;
+ }
+ }
+
+ ///////////////////////////////////////////////////////////////////////////
+ // combine color and coverage as frag color
+
+ if (!wroteFragColorZero) {
+ modulate_helper(fsColorOutput,
+ inColor.c_str(),
+ inCoverage.c_str(),
+ &segments.fFSCode);
+ }
+
+ segments.fVSCode.append("}\n");
+ segments.fFSCode.append("}\n");
+
+ ///////////////////////////////////////////////////////////////////////////
+ // compile and setup attribs and unis
+
+ if (!CompileFSAndVS(segments, programData)) {
+ return false;
+ }
+
+ if (!this->bindOutputsAttribsAndLinkProgram(texCoordAttrs,
+ usingDeclaredOutputs,
+ dualSourceOutputWritten,
+ programData)) {
+ return false;
+ }
+
+ this->getUniformLocationsAndInitCache(programData);
+
+ return true;
+}
+
+bool GrGLProgram::CompileFSAndVS(const ShaderCodeSegments& segments,
+ CachedData* programData) {
+
+ static const int MAX_STRINGS = 6;
+ const char* strings[MAX_STRINGS];
+ int lengths[MAX_STRINGS];
+ int stringCnt = 0;
+
+ if (segments.fHeader.size()) {
+ strings[stringCnt] = segments.fHeader.c_str();
+ lengths[stringCnt] = segments.fHeader.size();
+ ++stringCnt;
+ }
+ if (segments.fVSUnis.size()) {
+ strings[stringCnt] = segments.fVSUnis.c_str();
+ lengths[stringCnt] = segments.fVSUnis.size();
+ ++stringCnt;
+ }
+ if (segments.fVSAttrs.size()) {
+ strings[stringCnt] = segments.fVSAttrs.c_str();
+ lengths[stringCnt] = segments.fVSAttrs.size();
+ ++stringCnt;
+ }
+ if (segments.fVaryings.size()) {
+ strings[stringCnt] = segments.fVaryings.c_str();
+ lengths[stringCnt] = segments.fVaryings.size();
+ ++stringCnt;
+ }
+
+ GrAssert(segments.fVSCode.size());
+ strings[stringCnt] = segments.fVSCode.c_str();
+ lengths[stringCnt] = segments.fVSCode.size();
+ ++stringCnt;
+
+#if PRINT_SHADERS
+ GrPrintf(segments.fHeader.c_str());
+ GrPrintf(segments.fVSUnis.c_str());
+ GrPrintf(segments.fVSAttrs.c_str());
+ GrPrintf(segments.fVaryings.c_str());
+ GrPrintf(segments.fVSCode.c_str());
+ GrPrintf("\n");
+#endif
+ GrAssert(stringCnt <= MAX_STRINGS);
+ programData->fVShaderID = CompileShader(GR_GL_VERTEX_SHADER,
+ stringCnt,
+ strings,
+ lengths);
+
+ if (!programData->fVShaderID) {
+ return false;
+ }
+
+ stringCnt = 0;
+
+ if (segments.fHeader.size()) {
+ strings[stringCnt] = segments.fHeader.c_str();
+ lengths[stringCnt] = segments.fHeader.size();
+ ++stringCnt;
+ }
+ if (strlen(GrShaderPrecision()) > 1) {
+ strings[stringCnt] = GrShaderPrecision();
+ lengths[stringCnt] = strlen(GrShaderPrecision());
+ ++stringCnt;
+ }
+ if (segments.fFSUnis.size()) {
+ strings[stringCnt] = segments.fFSUnis.c_str();
+ lengths[stringCnt] = segments.fFSUnis.size();
+ ++stringCnt;
+ }
+ if (segments.fVaryings.size()) {
+ strings[stringCnt] = segments.fVaryings.c_str();
+ lengths[stringCnt] = segments.fVaryings.size();
+ ++stringCnt;
+ }
+ if (segments.fFSOutputs.size()) {
+ strings[stringCnt] = segments.fFSOutputs.c_str();
+ lengths[stringCnt] = segments.fFSOutputs.size();
+ ++stringCnt;
+ }
+
+ GrAssert(segments.fFSCode.size());
+ strings[stringCnt] = segments.fFSCode.c_str();
+ lengths[stringCnt] = segments.fFSCode.size();
+ ++stringCnt;
+
+#if PRINT_SHADERS
+ GrPrintf(segments.fHeader.c_str());
+ GrPrintf(GrShaderPrecision());
+ GrPrintf(segments.fFSUnis.c_str());
+ GrPrintf(segments.fVaryings.c_str());
+ GrPrintf(segments.fFSOutputs.c_str());
+ GrPrintf(segments.fFSCode.c_str());
+ GrPrintf("\n");
+#endif
+ GrAssert(stringCnt <= MAX_STRINGS);
+ programData->fFShaderID = CompileShader(GR_GL_FRAGMENT_SHADER,
+ stringCnt,
+ strings,
+ lengths);
+
+ if (!programData->fFShaderID) {
+ return false;
+ }
+
+ return true;
+}
+
+GrGLuint GrGLProgram::CompileShader(GrGLenum type,
+ int stringCnt,
+ const char** strings,
+ int* stringLengths) {
+ GrGLuint shader = GR_GL(CreateShader(type));
+ if (0 == shader) {
+ return 0;
+ }
+
+ GrGLint compiled = GR_GL_INIT_ZERO;
+ GR_GL(ShaderSource(shader, stringCnt, strings, stringLengths));
+ GR_GL(CompileShader(shader));
+ GR_GL(GetShaderiv(shader, GR_GL_COMPILE_STATUS, &compiled));
+
+ if (!compiled) {
+ GrGLint infoLen = GR_GL_INIT_ZERO;
+ GR_GL(GetShaderiv(shader, GR_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;
+}
+
+bool GrGLProgram::bindOutputsAttribsAndLinkProgram(
+ GrStringBuilder texCoordAttrNames[],
+ bool bindColorOut,
+ bool bindDualSrcOut,
+ CachedData* programData) const {
+ programData->fProgramID = GR_GL(CreateProgram());
+ if (!programData->fProgramID) {
+ return false;
+ }
+ const GrGLint& progID = programData->fProgramID;
+
+ GR_GL(AttachShader(progID, programData->fVShaderID));
+ GR_GL(AttachShader(progID, programData->fFShaderID));
+
+ if (bindColorOut) {
+ GR_GL(BindFragDataLocationIndexed(programData->fProgramID,
+ 0, 0, declared_color_output_name()));
+ }
+ if (bindDualSrcOut) {
+ GR_GL(BindFragDataLocationIndexed(programData->fProgramID,
+ 0, 1, dual_source_output_name()));
+ }
+
+ // Bind the attrib locations to same values for all shaders
+ GR_GL(BindAttribLocation(progID, PositionAttributeIdx(), POS_ATTR_NAME));
+ for (int t = 0; t < GrDrawTarget::kMaxTexCoords; ++t) {
+ if (texCoordAttrNames[t].size()) {
+ GR_GL(BindAttribLocation(progID,
+ TexCoordAttributeIdx(t),
+ texCoordAttrNames[t].c_str()));
+ }
+ }
+
+ if (kSetAsAttribute == programData->fUniLocations.fViewMatrixUni) {
+ GR_GL(BindAttribLocation(progID,
+ ViewMatrixAttributeIdx(),
+ VIEW_MATRIX_NAME));
+ }
+
+ for (int s = 0; s < GrDrawTarget::kNumStages; ++s) {
+ const StageUniLocations& unis = programData->fUniLocations.fStages[s];
+ if (kSetAsAttribute == unis.fTextureMatrixUni) {
+ GrStringBuilder matName;
+ tex_matrix_name(s, &matName);
+ GR_GL(BindAttribLocation(progID,
+ TextureMatrixAttributeIdx(s),
+ matName.c_str()));
+ }
+ }
+
+ GR_GL(BindAttribLocation(progID, ColorAttributeIdx(), COL_ATTR_NAME));
+
+ GR_GL(LinkProgram(progID));
+
+ GrGLint linked = GR_GL_INIT_ZERO;
+ GR_GL(GetProgramiv(progID, GR_GL_LINK_STATUS, &linked));
+ if (!linked) {
+ GrGLint infoLen = GR_GL_INIT_ZERO;
+ GR_GL(GetProgramiv(progID, GR_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));
+ programData->fProgramID = 0;
+ return false;
+ }
+ return true;
+}
+
+void GrGLProgram::getUniformLocationsAndInitCache(CachedData* programData) const {
+ const GrGLint& progID = programData->fProgramID;
+
+ if (kUseUniform == programData->fUniLocations.fViewMatrixUni) {
+ programData->fUniLocations.fViewMatrixUni =
+ GR_GL(GetUniformLocation(progID, VIEW_MATRIX_NAME));
+ GrAssert(kUnusedUniform != programData->fUniLocations.fViewMatrixUni);
+ }
+ if (kUseUniform == programData->fUniLocations.fColorUni) {
+ programData->fUniLocations.fColorUni =
+ GR_GL(GetUniformLocation(progID, COL_UNI_NAME));
+ GrAssert(kUnusedUniform != programData->fUniLocations.fColorUni);
+ }
+ if (kUseUniform == programData->fUniLocations.fColorFilterUni) {
+ programData->fUniLocations.fColorFilterUni =
+ GR_GL(GetUniformLocation(progID, COL_FILTER_UNI_NAME));
+ GrAssert(kUnusedUniform != programData->fUniLocations.fColorFilterUni);
+ }
+
+ if (kUseUniform == programData->fUniLocations.fEdgesUni) {
+ programData->fUniLocations.fEdgesUni =
+ GR_GL(GetUniformLocation(progID, EDGES_UNI_NAME));
+ GrAssert(kUnusedUniform != programData->fUniLocations.fEdgesUni);
+ } else {
+ programData->fUniLocations.fEdgesUni = kUnusedUniform;
+ }
+
+ for (int s = 0; s < GrDrawTarget::kNumStages; ++s) {
+ StageUniLocations& locations = programData->fUniLocations.fStages[s];
+ if (fProgramDesc.fStages[s].isEnabled()) {
+ if (kUseUniform == locations.fTextureMatrixUni) {
+ GrStringBuilder texMName;
+ tex_matrix_name(s, &texMName);
+ locations.fTextureMatrixUni = GR_GL(GetUniformLocation(
+ progID,
+ texMName.c_str()));
+ GrAssert(kUnusedUniform != locations.fTextureMatrixUni);
+ }
+
+ if (kUseUniform == locations.fSamplerUni) {
+ GrStringBuilder samplerName;
+ sampler_name(s, &samplerName);
+ locations.fSamplerUni = GR_GL(GetUniformLocation(
+ progID,
+ samplerName.c_str()));
+ GrAssert(kUnusedUniform != locations.fSamplerUni);
+ }
+
+ if (kUseUniform == locations.fNormalizedTexelSizeUni) {
+ GrStringBuilder texelSizeName;
+ normalized_texel_size_name(s, &texelSizeName);
+ locations.fNormalizedTexelSizeUni =
+ GR_GL(GetUniformLocation(progID, texelSizeName.c_str()));
+ GrAssert(kUnusedUniform != locations.fNormalizedTexelSizeUni);
+ }
+
+ if (kUseUniform == locations.fRadial2Uni) {
+ GrStringBuilder radial2ParamName;
+ radial2_param_name(s, &radial2ParamName);
+ locations.fRadial2Uni = GR_GL(GetUniformLocation(
+ progID,
+ radial2ParamName.c_str()));
+ GrAssert(kUnusedUniform != locations.fRadial2Uni);
+ }
+
+ if (kUseUniform == locations.fTexDomUni) {
+ GrStringBuilder texDomName;
+ tex_domain_name(s, &texDomName);
+ locations.fTexDomUni = GR_GL(GetUniformLocation(
+ progID,
+ texDomName.c_str()));
+ GrAssert(kUnusedUniform != locations.fTexDomUni);
+ }
+ }
+ }
+ GR_GL(UseProgram(progID));
+
+ // init sampler unis and set bogus values for state tracking
+ for (int s = 0; s < GrDrawTarget::kNumStages; ++s) {
+ if (kUnusedUniform != programData->fUniLocations.fStages[s].fSamplerUni) {
+ GR_GL(Uniform1i(programData->fUniLocations.fStages[s].fSamplerUni, s));
+ }
+ programData->fTextureMatrices[s] = GrMatrix::InvalidMatrix();
+ programData->fRadial2CenterX1[s] = GR_ScalarMax;
+ programData->fRadial2Radius0[s] = -GR_ScalarMax;
+ programData->fTextureWidth[s] = -1;
+ programData->fTextureHeight[s] = -1;
+ }
+ programData->fViewMatrix = GrMatrix::InvalidMatrix();
+ programData->fColor = GrColor_ILLEGAL;
+ programData->fColorFilterColor = GrColor_ILLEGAL;
+}
+
+//============================================================================
+// Stage code generation
+//============================================================================
+
+void GrGLProgram::genStageCode(int stageNum,
+ const GrGLProgram::ProgramDesc::StageDesc& desc,
+ const char* fsInColor, // NULL means no incoming color
+ const char* fsOutColor,
+ const char* vsInCoord,
+ ShaderCodeSegments* segments,
+ StageUniLocations* locations) const {
+
+ GrAssert(stageNum >= 0 && stageNum <= 9);
+
+ GrStringBuilder 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.
+ GrStringBuilder texMName;
+ tex_matrix_name(stageNum, &texMName);
+ if (desc.fOptFlags & ProgramDesc::StageDesc::kIdentityMatrix_OptFlagBit) {
+ varyingDims = coordDims;
+ } else {
+ #if GR_GL_ATTRIBUTE_MATRICES
+ segments->fVSAttrs.appendf("attribute mat3 %s;\n", texMName.c_str());
+ locations->fTextureMatrixUni = kSetAsAttribute;
+ #else
+ segments->fVSUnis.appendf("uniform mat3 %s;\n", texMName.c_str());
+ locations->fTextureMatrixUni = kUseUniform;
+ #endif
+ if (desc.fOptFlags & ProgramDesc::StageDesc::kNoPerspective_OptFlagBit) {
+ varyingDims = coordDims;
+ } else {
+ varyingDims = coordDims + 1;
+ }
+ }
+
+ GrStringBuilder samplerName;
+ sampler_name(stageNum, &samplerName);
+ segments->fFSUnis.appendf("uniform sampler2D %s;\n", samplerName.c_str());
+ locations->fSamplerUni = kUseUniform;
+
+ GrStringBuilder texelSizeName;
+ if (ProgramDesc::StageDesc::k2x2_FetchMode == desc.fFetchMode) {
+ normalized_texel_size_name(stageNum, &texelSizeName);
+ segments->fFSUnis.appendf("uniform vec2 %s;\n", texelSizeName.c_str());
+ }
+
+ segments->fVaryings.appendf("varying %s %s;\n",
+ float_vector_type(varyingDims), varyingName.c_str());
+
+ if (desc.fOptFlags & ProgramDesc::StageDesc::kIdentityMatrix_OptFlagBit) {
+ GrAssert(varyingDims == coordDims);
+ segments->fVSCode.appendf("\t%s = %s;\n", varyingName.c_str(), vsInCoord);
+ } else {
+ // varying = texMatrix * texCoord
+ segments->fVSCode.appendf("\t%s = (%s * vec3(%s, 1))%s;\n",
+ varyingName.c_str(), texMName.c_str(),
+ vsInCoord, vector_all_coords(varyingDims));
+ }
+
+ GrStringBuilder radial2ParamsName;
+ radial2_param_name(stageNum, &radial2ParamsName);
+ // for radial grads without perspective we can pass the linear
+ // part of the quadratic as a varying.
+ GrStringBuilder radial2VaryingName;
+ radial2_varying_name(stageNum, &radial2VaryingName);
+
+ if (ProgramDesc::StageDesc::kRadial2Gradient_CoordMapping == desc.fCoordMapping) {
+
+ segments->fVSUnis.appendf("uniform %s float %s[6];\n",
+ GrPrecision(), radial2ParamsName.c_str());
+ segments->fFSUnis.appendf("uniform float %s[6];\n",
+ radial2ParamsName.c_str());
+ locations->fRadial2Uni = kUseUniform;
+
+ // if there is perspective we don't interpolate this
+ if (varyingDims == coordDims) {
+ GrAssert(2 == coordDims);
+ segments->fVaryings.appendf("varying float %s;\n", radial2VaryingName.c_str());
+
+ // r2Var = 2 * (r2Parm[2] * varCoord.x - r2Param[3])
+ segments->fVSCode.appendf("\t%s = 2.0 *(%s[2] * %s.x - %s[3]);\n",
+ radial2VaryingName.c_str(), radial2ParamsName.c_str(),
+ varyingName.c_str(), radial2ParamsName.c_str());
+ }
+ }
+
+ /// Fragment Shader Stuff
+ GrStringBuilder fsCoordName;
+ // function used to access the shader, may be made projective
+ GrStringBuilder texFunc("texture2D");
+ if (desc.fOptFlags & (ProgramDesc::StageDesc::kIdentityMatrix_OptFlagBit |
+ ProgramDesc::StageDesc::kNoPerspective_OptFlagBit)) {
+ GrAssert(varyingDims == coordDims);
+ fsCoordName = varyingName;
+ } else {
+ // if we have to do some special op on the varyings to get
+ // our final tex coords then when in perspective we have to
+ // do an explicit divide. Otherwise, we can use a Proj func.
+ if (ProgramDesc::StageDesc::kIdentity_CoordMapping == desc.fCoordMapping &&
+ ProgramDesc::StageDesc::kSingle_FetchMode == desc.fFetchMode) {
+ texFunc.append("Proj");
+ fsCoordName = varyingName;
+ } else {
+ fsCoordName = "inCoord";
+ fsCoordName.appendS32(stageNum);
+ segments->fFSCode.appendf("\t%s %s = %s%s / %s%s;\n",
+ float_vector_type(coordDims),
+ fsCoordName.c_str(),
+ varyingName.c_str(),
+ vector_nonhomog_coords(varyingDims),
+ varyingName.c_str(),
+ vector_homog_coord(varyingDims));
+ }
+ }
+
+ GrStringBuilder sampleCoords;
+ bool complexCoord = false;
+ switch (desc.fCoordMapping) {
+ case ProgramDesc::StageDesc::kIdentity_CoordMapping:
+ sampleCoords = fsCoordName;
+ break;
+ case ProgramDesc::StageDesc::kSweepGradient_CoordMapping:
+ sampleCoords.printf("vec2(atan(- %s.y, - %s.x) * 0.1591549430918 + 0.5, 0.5)", fsCoordName.c_str(), fsCoordName.c_str());
+ complexCoord = true;
+ break;
+ case ProgramDesc::StageDesc::kRadialGradient_CoordMapping:
+ sampleCoords.printf("vec2(length(%s.xy), 0.5)", fsCoordName.c_str());
+ complexCoord = true;
+ break;
+ case ProgramDesc::StageDesc::kRadial2Gradient_CoordMapping: {
+ GrStringBuilder cName("c");
+ GrStringBuilder ac4Name("ac4");
+ GrStringBuilder rootName("root");
+
+ cName.appendS32(stageNum);
+ ac4Name.appendS32(stageNum);
+ rootName.appendS32(stageNum);
+
+ // if we were able to interpolate the linear component bVar is the varying
+ // otherwise compute it
+ GrStringBuilder bVar;
+ if (coordDims == varyingDims) {
+ bVar = radial2VaryingName;
+ GrAssert(2 == varyingDims);
+ } else {
+ GrAssert(3 == varyingDims);
+ bVar = "b";
+ bVar.appendS32(stageNum);
+ segments->fFSCode.appendf("\tfloat %s = 2.0 * (%s[2] * %s.x - %s[3]);\n",
+ bVar.c_str(), radial2ParamsName.c_str(),
+ fsCoordName.c_str(), radial2ParamsName.c_str());
+ }
+
+ // c = (x^2)+(y^2) - params[4]
+ segments->fFSCode.appendf("\tfloat %s = dot(%s, %s) - %s[4];\n",
+ cName.c_str(), fsCoordName.c_str(),
+ fsCoordName.c_str(),
+ radial2ParamsName.c_str());
+ // ac4 = 4.0 * params[0] * c
+ segments->fFSCode.appendf("\tfloat %s = %s[0] * 4.0 * %s;\n",
+ ac4Name.c_str(), radial2ParamsName.c_str(),
+ cName.c_str());
+
+ // root = sqrt(b^2-4ac)
+ // (abs to avoid exception due to fp precision)
+ segments->fFSCode.appendf("\tfloat %s = sqrt(abs(%s*%s - %s));\n",
+ rootName.c_str(), bVar.c_str(), bVar.c_str(),
+ ac4Name.c_str());
+
+ // x coord is: (-b + params[5] * sqrt(b^2-4ac)) * params[1]
+ // y coord is 0.5 (texture is effectively 1D)
+ sampleCoords.printf("vec2((-%s + %s[5] * %s) * %s[1], 0.5)",
+ bVar.c_str(), radial2ParamsName.c_str(),
+ rootName.c_str(), radial2ParamsName.c_str());
+ complexCoord = true;
+ break;}
+ };
+
+ const char* smear;
+ if (desc.fModulation == ProgramDesc::StageDesc::kAlpha_Modulation) {
+ smear = ".aaaa";
+ } else {
+ smear = "";
+ }
+ GrStringBuilder modulate;
+ if (NULL != fsInColor) {
+ modulate.printf(" * %s", fsInColor);
+ }
+
+ if (desc.fOptFlags &
+ ProgramDesc::StageDesc::kCustomTextureDomain_OptFlagBit) {
+ GrStringBuilder texDomainName;
+ tex_domain_name(stageNum, &texDomainName);
+ segments->fFSUnis.appendf("uniform %s %s;\n",
+ float_vector_type(4),
+ texDomainName.c_str());
+ GrStringBuilder coordVar("clampCoord");
+ segments->fFSCode.appendf("\t%s %s = clamp(%s, %s.xy, %s.zw);\n",
+ float_vector_type(coordDims),
+ coordVar.c_str(),
+ sampleCoords.c_str(),
+ texDomainName.c_str(),
+ texDomainName.c_str());
+ sampleCoords = coordVar;
+ locations->fTexDomUni = kUseUniform;
+ }
+
+ if (ProgramDesc::StageDesc::k2x2_FetchMode == desc.fFetchMode) {
+ locations->fNormalizedTexelSizeUni = kUseUniform;
+ if (complexCoord) {
+ // assign the coord to a var rather than compute 4x.
+ GrStringBuilder coordVar("tCoord");
+ coordVar.appendS32(stageNum);
+ segments->fFSCode.appendf("\t%s %s = %s;\n",
+ float_vector_type(coordDims),
+ coordVar.c_str(), sampleCoords.c_str());
+ sampleCoords = coordVar;
+ }
+ GrAssert(2 == coordDims);
+ GrStringBuilder accumVar("accum");
+ accumVar.appendS32(stageNum);
+ 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);
+ 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);
+ 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);
+ 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);
+ segments->fFSCode.appendf("\t%s = .25 * %s%s;\n", fsOutColor, accumVar.c_str(), modulate.c_str());
+ } else {
+ 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());
+ }
+}
