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/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SKSL_LAYOUT
#define SKSL_LAYOUT
namespace SkSL {
/**
* Represents a layout block appearing before a variable declaration, as in:
*
* layout (location = 0) int x;
*/
struct Layout {
Layout(const ASTLayout& layout)
: fLocation(layout.fLocation)
, fBinding(layout.fBinding)
, fIndex(layout.fIndex)
, fSet(layout.fSet)
, fBuiltin(layout.fBuiltin)
, fOriginUpperLeft(layout.fOriginUpperLeft) {}
Layout(int location, int binding, int index, int set, int builtin, bool originUpperLeft)
: fLocation(location)
, fBinding(binding)
, fIndex(index)
, fSet(set)
, fBuiltin(builtin)
, fOriginUpperLeft(originUpperLeft) {}
std::string description() const {
std::string result;
std::string separator;
if (fLocation >= 0) {
result += separator + "location = " + to_string(fLocation);
separator = ", ";
}
if (fBinding >= 0) {
result += separator + "binding = " + to_string(fBinding);
separator = ", ";
}
if (fIndex >= 0) {
result += separator + "index = " + to_string(fIndex);
separator = ", ";
}
if (fSet >= 0) {
result += separator + "set = " + to_string(fSet);
separator = ", ";
}
if (fBuiltin >= 0) {
result += separator + "builtin = " + to_string(fBuiltin);
separator = ", ";
}
if (fOriginUpperLeft) {
result += separator + "origin_upper_left";
separator = ", ";
}
if (result.length() > 0) {
result = "layout (" + result + ")";
}
return result;
}
bool operator==(const Layout& other) const {
return fLocation == other.fLocation &&
fBinding == other.fBinding &&
fIndex == other.fIndex &&
fSet == other.fSet &&
fBuiltin == other.fBuiltin;
}
bool operator!=(const Layout& other) const {
return !(*this == other);
}
// everything but builtin is in the GLSL spec; builtin comes from SPIR-V and identifies which
// particular builtin value this object represents.
int fLocation;
int fBinding;
int fIndex;
int fSet;
int fBuiltin;
bool fOriginUpperLeft;
};
} // namespace
#endif
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