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/*
* Copyright 2012 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "GrGLSL.h"
#include "GrGLProgramStage.h"
GrGLProgramStageFactory::~GrGLProgramStageFactory(void) {
}
uint16_t GrGLProgramStageFactory::stageKey(const GrCustomStage*) {
return 0;
}
void GrGLProgramStage::setupVSUnis(VarArray& vsUnis, int stage) {
}
void GrGLProgramStage::setupFSUnis(VarArray& fsUnis, int stage) {
}
void GrGLProgramStage::initUniforms(const GrGLInterface*, int progID) {
}
void GrGLProgramStage::setData(const GrGLInterface*, GrCustomStage*) {
}
GrStringBuilder GrGLProgramStage::emitTextureSetup(GrStringBuilder* code,
const char* coordName,
int stageNum,
int coordDims,
int varyingDims) {
GrStringBuilder retval;
switch (fSamplerMode) {
case kDefault_SamplerMode:
// Fall through
case kProj_SamplerMode:
// Do nothing
retval = coordName;
break;
case kExplicitDivide_SamplerMode:
retval = "inCoord";
retval.appendS32(stageNum);
code->appendf("\t %s %s = %s%s / %s%s\n",
GrGLShaderVar::TypeString(GrSLFloatVectorType(coordDims)),
fCoordName.c_str(),
coordName,
GrGLSLVectorNonhomogCoords(varyingDims),
coordName,
GrGLSLVectorHomogCoord(varyingDims));
break;
}
return retval;
}
void GrGLProgramStage::emitTextureLookup(GrStringBuilder* code,
const char* samplerName,
const char* coordName) {
switch (fSamplerMode) {
case kDefault_SamplerMode:
// Fall through
case kExplicitDivide_SamplerMode:
code->appendf("texture2D(%s, %s)", samplerName, coordName);
break;
case kProj_SamplerMode:
code->appendf("texture2DProj(%s, %s)", samplerName, coordName);
break;
}
}
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