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// Copyright 2020 The Tint Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "src/tint/ast/storage_texture.h"
#include "src/tint/ast/f32.h"
#include "src/tint/ast/i32.h"
#include "src/tint/ast/u32.h"
#include "src/tint/program_builder.h"
TINT_INSTANTIATE_TYPEINFO(tint::ast::StorageTexture);
namespace tint::ast {
// Note, these names match the names in the WGSL spec. This behaviour is used
// in the WGSL writer to emit the texture format names.
std::ostream& operator<<(std::ostream& out, TexelFormat format) {
switch (format) {
case TexelFormat::kNone:
out << "none";
break;
case TexelFormat::kR32Uint:
out << "r32uint";
break;
case TexelFormat::kR32Sint:
out << "r32sint";
break;
case TexelFormat::kR32Float:
out << "r32float";
break;
case TexelFormat::kRgba8Unorm:
out << "rgba8unorm";
break;
case TexelFormat::kRgba8Snorm:
out << "rgba8snorm";
break;
case TexelFormat::kRgba8Uint:
out << "rgba8uint";
break;
case TexelFormat::kRgba8Sint:
out << "rgba8sint";
break;
case TexelFormat::kRg32Uint:
out << "rg32uint";
break;
case TexelFormat::kRg32Sint:
out << "rg32sint";
break;
case TexelFormat::kRg32Float:
out << "rg32float";
break;
case TexelFormat::kRgba16Uint:
out << "rgba16uint";
break;
case TexelFormat::kRgba16Sint:
out << "rgba16sint";
break;
case TexelFormat::kRgba16Float:
out << "rgba16float";
break;
case TexelFormat::kRgba32Uint:
out << "rgba32uint";
break;
case TexelFormat::kRgba32Sint:
out << "rgba32sint";
break;
case TexelFormat::kRgba32Float:
out << "rgba32float";
break;
}
return out;
}
StorageTexture::StorageTexture(ProgramID pid,
const Source& src,
TextureDimension d,
TexelFormat fmt,
const Type* subtype,
Access ac)
: Base(pid, src, d), format(fmt), type(subtype), access(ac) {}
StorageTexture::StorageTexture(StorageTexture&&) = default;
StorageTexture::~StorageTexture() = default;
std::string StorageTexture::FriendlyName(const SymbolTable&) const {
std::ostringstream out;
out << "texture_storage_" << dim << "<" << format << ", " << access << ">";
return out.str();
}
const StorageTexture* StorageTexture::Clone(CloneContext* ctx) const {
// Clone arguments outside of create() call to have deterministic ordering
auto src = ctx->Clone(source);
auto* ty = ctx->Clone(type);
return ctx->dst->create<StorageTexture>(src, dim, format, ty, access);
}
Type* StorageTexture::SubtypeFor(TexelFormat format, ProgramBuilder& builder) {
switch (format) {
case TexelFormat::kR32Uint:
case TexelFormat::kRgba8Uint:
case TexelFormat::kRg32Uint:
case TexelFormat::kRgba16Uint:
case TexelFormat::kRgba32Uint: {
return builder.create<U32>();
}
case TexelFormat::kR32Sint:
case TexelFormat::kRgba8Sint:
case TexelFormat::kRg32Sint:
case TexelFormat::kRgba16Sint:
case TexelFormat::kRgba32Sint: {
return builder.create<I32>();
}
case TexelFormat::kRgba8Unorm:
case TexelFormat::kRgba8Snorm:
case TexelFormat::kR32Float:
case TexelFormat::kRg32Float:
case TexelFormat::kRgba16Float:
case TexelFormat::kRgba32Float: {
return builder.create<F32>();
}
case TexelFormat::kNone:
break;
}
return nullptr;
}
} // namespace tint::ast