void GrGLNormalPathProcessor::emitTransforms(GrGLGPBuilder* pb, const TransformsIn& tin,
TransformsOut* tout) {
tout->push_back_n(tin.count());
fInstalledTransforms.push_back_n(tin.count());
for (int i = 0; i < tin.count(); i++) {
const ProcCoords& coordTransforms = tin[i];
fInstalledTransforms[i].push_back_n(coordTransforms.count());
for (int t = 0; t < coordTransforms.count(); t++) {
GrSLType varyingType =
coordTransforms[t]->getMatrix().hasPerspective() ? kVec3f_GrSLType :
kVec2f_GrSLType;
SkString strVaryingName("MatrixCoord");
strVaryingName.appendf("_%i_%i", i, t);
GrGLVertToFrag v(varyingType);
pb->addVarying(strVaryingName.c_str(), &v);
SeparableVaryingInfo& varyingInfo = fSeparableVaryingInfos.push_back();
varyingInfo.fVariable = pb->getFragmentShaderBuilder()->fInputs.back();
varyingInfo.fLocation = fSeparableVaryingInfos.count() - 1;
varyingInfo.fType = varyingType;
fInstalledTransforms[i][t].fHandle = ShaderVarHandle(varyingInfo.fLocation);
fInstalledTransforms[i][t].fType = varyingType;
SkNEW_APPEND_TO_TARRAY(&(*tout)[i], GrGLProcessor::TransformedCoords,
(SkString(v.fsIn()), varyingType));
}
}
}
void emitTransforms(GrGLSLVaryingHandler* varyingHandler,
const TransformsIn& tin,
TransformsOut* tout) {
tout->push_back_n(tin.count());
fInstalledTransforms.push_back_n(tin.count());
for (int i = 0; i < tin.count(); i++) {
const ProcCoords& coordTransforms = tin[i];
fInstalledTransforms[i].push_back_n(coordTransforms.count());
for (int t = 0; t < coordTransforms.count(); t++) {
GrSLType varyingType =
coordTransforms[t]->getMatrix().hasPerspective() ? kVec3f_GrSLType :
kVec2f_GrSLType;
SkString strVaryingName("MatrixCoord");
strVaryingName.appendf("_%i_%i", i, t);
GrGLSLVertToFrag v(varyingType);
GrGLVaryingHandler* glVaryingHandler = (GrGLVaryingHandler*) varyingHandler;
fInstalledTransforms[i][t].fHandle =
glVaryingHandler->addPathProcessingVarying(strVaryingName.c_str(),
&v).toIndex();
fInstalledTransforms[i][t].fType = varyingType;
SkNEW_APPEND_TO_TARRAY(&(*tout)[i], GrGLSLTransformedCoords,
(SkString(v.fsIn()), varyingType));
}
}
}
void GrGLLegacyPathProcessor::emitTransforms(GrGLGPBuilder*, const TransformsIn& tin,
TransformsOut* tout) {
tout->push_back_n(tin.count());
fInstalledTransforms.push_back_n(tin.count());
for (int i = 0; i < tin.count(); i++) {
const ProcCoords& coordTransforms = tin[i];
int texCoordIndex = this->addTexCoordSets(coordTransforms.count());
// Use the first uniform location as the texcoord index.
fInstalledTransforms[i].push_back_n(1);
fInstalledTransforms[i][0].fHandle = ShaderVarHandle(texCoordIndex);
SkString name;
for (int t = 0; t < coordTransforms.count(); ++t) {
GrSLType type = coordTransforms[t]->getMatrix().hasPerspective() ? kVec3f_GrSLType :
kVec2f_GrSLType;
name.printf("%s(gl_TexCoord[%i])", GrGLSLTypeString(type), texCoordIndex++);
SkNEW_APPEND_TO_TARRAY(&(*tout)[i], GrGLProcessor::TransformedCoords, (name, type));
}
}
}
void GrGLGeometryProcessor::emitTransforms(GrGLGPBuilder* pb,
const GrShaderVar& posVar,
const char* localCoords,
const SkMatrix& localMatrix,
const TransformsIn& tin,
TransformsOut* tout) {
GrGLVertexBuilder* vb = pb->getVertexShaderBuilder();
tout->push_back_n(tin.count());
fInstalledTransforms.push_back_n(tin.count());
for (int i = 0; i < tin.count(); i++) {
const ProcCoords& coordTransforms = tin[i];
fInstalledTransforms[i].push_back_n(coordTransforms.count());
for (int t = 0; t < coordTransforms.count(); t++) {
SkString strUniName("StageMatrix");
strUniName.appendf("_%i_%i", i, t);
GrSLType varyingType;
GrCoordSet coordType = coordTransforms[t]->sourceCoords();
uint32_t type = coordTransforms[t]->getMatrix().getType();
if (kLocal_GrCoordSet == coordType) {
type |= localMatrix.getType();
}
varyingType = SkToBool(SkMatrix::kPerspective_Mask & type) ? kVec3f_GrSLType :
kVec2f_GrSLType;
GrSLPrecision precision = coordTransforms[t]->precision();
const char* uniName;
fInstalledTransforms[i][t].fHandle =
pb->addUniform(GrGLProgramBuilder::kVertex_Visibility,
kMat33f_GrSLType, precision,
strUniName.c_str(),
&uniName).toShaderBuilderIndex();
SkString strVaryingName("MatrixCoord");
strVaryingName.appendf("_%i_%i", i, t);
GrGLVertToFrag v(varyingType);
pb->addVarying(strVaryingName.c_str(), &v, precision);
SkASSERT(kVec2f_GrSLType == varyingType || kVec3f_GrSLType == varyingType);
SkNEW_APPEND_TO_TARRAY(&(*tout)[i], GrGLProcessor::TransformedCoords,
(SkString(v.fsIn()), varyingType));
// varying = matrix * coords (logically)
if (kDevice_GrCoordSet == coordType) {
if (kVec2f_GrSLType == varyingType) {
if (kVec2f_GrSLType == posVar.getType()) {
vb->codeAppendf("%s = (%s * vec3(%s, 1)).xy;",
v.vsOut(), uniName, posVar.c_str());
} else {
// The brackets here are just to scope the temp variable
vb->codeAppendf("{ vec3 temp = %s * %s;", uniName, posVar.c_str());
vb->codeAppendf("%s = vec2(temp.x/temp.z, temp.y/temp.z); }", v.vsOut());
}
} else {
if (kVec2f_GrSLType == posVar.getType()) {
vb->codeAppendf("%s = %s * vec3(%s, 1);",
v.vsOut(), uniName, posVar.c_str());
} else {
vb->codeAppendf("%s = %s * %s;", v.vsOut(), uniName, posVar.c_str());
}
}
} else {
if (kVec2f_GrSLType == varyingType) {
vb->codeAppendf("%s = (%s * vec3(%s, 1)).xy;", v.vsOut(), uniName, localCoords);
} else {
vb->codeAppendf("%s = %s * vec3(%s, 1);", v.vsOut(), uniName, localCoords);
}
}
}
}
}
