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//
// Copyright (c) 2016 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// OutputVulkanGLSL:
// Code that outputs shaders that fit GL_KHR_vulkan_glsl.
// The shaders are then fed into glslang to spit out SPIR-V (libANGLE-side).
// See: https://www.khronos.org/registry/vulkan/specs/misc/GL_KHR_vulkan_glsl.txt
//
#include "compiler/translator/OutputVulkanGLSL.h"
#include "compiler/translator/util.h"
namespace sh
{
TOutputVulkanGLSL::TOutputVulkanGLSL(TInfoSinkBase &objSink,
ShArrayIndexClampingStrategy clampingStrategy,
ShHashFunction64 hashFunction,
NameMap &nameMap,
TSymbolTable *symbolTable,
sh::GLenum shaderType,
int shaderVersion,
ShShaderOutput output,
ShCompileOptions compileOptions)
: TOutputGLSL(objSink,
clampingStrategy,
hashFunction,
nameMap,
symbolTable,
shaderType,
shaderVersion,
output,
compileOptions)
{
}
// TODO(jmadill): This is not complete.
void TOutputVulkanGLSL::writeLayoutQualifier(TIntermTyped *variable)
{
const TType &type = variable->getType();
bool needsCustomLayout =
(type.getQualifier() == EvqAttribute || type.getQualifier() == EvqFragmentOut ||
type.getQualifier() == EvqVertexIn || IsVarying(type.getQualifier()) ||
IsSampler(type.getBasicType()));
if (!NeedsToWriteLayoutQualifier(type) && !needsCustomLayout)
{
return;
}
TInfoSinkBase &out = objSink();
const TLayoutQualifier &layoutQualifier = type.getLayoutQualifier();
out << "layout(";
// This isn't super clean, but it gets the job done.
// See corresponding code in GlslangWrapper.cpp.
// TODO(jmadill): Ensure declarations are separated.
TIntermSymbol *symbol = variable->getAsSymbolNode();
ASSERT(symbol);
if (needsCustomLayout)
{
out << "@@ LAYOUT-" << symbol->getName().getString() << " @@";
}
if (IsImage(type.getBasicType()) && layoutQualifier.imageInternalFormat != EiifUnspecified)
{
ASSERT(type.getQualifier() == EvqTemporary || type.getQualifier() == EvqUniform);
out << getImageInternalFormatString(layoutQualifier.imageInternalFormat);
}
out << ") ";
}
} // namespace sh
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