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/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "GrGLSLGeometryShaderBuilder.h"
#include "GrGLSLProgramBuilder.h"
#include "GrGLSLVarying.h"
static const char* input_type_name(GrGLSLGeometryBuilder::InputType in) {
using InputType = GrGLSLGeometryBuilder::InputType;
switch (in) {
case InputType::kPoints: return "points";
case InputType::kLines: return "lines";
case InputType::kLinesAdjacency: return "lines_adjacency";
case InputType::kTriangles: return "triangles";
case InputType::kTrianglesAdjacency: return "triangles_adjacency";
}
SkFAIL("invalid input type");
return "unknown_input";
}
static const char* output_type_name(GrGLSLGeometryBuilder::OutputType out) {
using OutputType = GrGLSLGeometryBuilder::OutputType;
switch (out) {
case OutputType::kPoints: return "points";
case OutputType::kLineStrip: return "line_strip";
case OutputType::kTriangleStrip: return "triangle_strip";
}
SkFAIL("invalid output type");
return "unknown_output";
}
GrGLSLGeometryBuilder::GrGLSLGeometryBuilder(GrGLSLProgramBuilder* program)
: INHERITED(program)
, fIsConfigured(false) {
}
void GrGLSLGeometryBuilder::configure(InputType inputType, OutputType outputType, int maxVertices,
int numInvocations) {
SkASSERT(!fIsConfigured);
this->addLayoutQualifier(input_type_name(inputType), kIn_InterfaceQualifier);
this->addLayoutQualifier(SkStringPrintf("invocations = %i", numInvocations).c_str(),
kIn_InterfaceQualifier);
this->addLayoutQualifier(output_type_name(outputType), kOut_InterfaceQualifier);
this->addLayoutQualifier(SkStringPrintf("max_vertices = %i", maxVertices).c_str(),
kOut_InterfaceQualifier);
fIsConfigured = true;
}
void GrGLSLGeometryBuilder::onFinalize() {
SkASSERT(fIsConfigured);
fProgramBuilder->varyingHandler()->getGeomDecls(&this->inputs(), &this->outputs());
}
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