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glsl: Implement Images

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This commit is contained in:
ameerj 2021-06-02 20:37:24 -04:00
parent 6577a63d36
commit af9696059c
2 changed files with 74 additions and 9 deletions
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50
src/shader_recompiler/backend/glsl/emit_context.cpp
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@ -91,11 +91,42 @@ std::string_view SamplerType(TextureType type, bool is_depth) {
case TextureType::Buffer:
return "samplerBuffer";
default:
fmt::print("Texture type: {}", type);
throw NotImplementedException("Texture type: {}", type);
}
}
std::string_view ImageType(TextureType type) {
switch (type) {
case TextureType::Color2D:
return "uimage2D";
default:
throw NotImplementedException("Image type: {}", type);
}
}
std::string_view ImageFormatString(ImageFormat format) {
switch (format) {
case ImageFormat::Typeless:
return "";
case ImageFormat::R8_UINT:
return ",r8ui";
case ImageFormat::R8_SINT:
return ",r8i";
case ImageFormat::R16_UINT:
return ",r16ui";
case ImageFormat::R16_SINT:
return ",r16i";
case ImageFormat::R32_UINT:
return ",r32ui";
case ImageFormat::R32G32_UINT:
return ",rg32ui";
case ImageFormat::R32G32B32A32_UINT:
return ",rgba32ui";
default:
throw NotImplementedException("Image format: {}", format);
}
}
std::string_view GetTessMode(TessPrimitive primitive) {
switch (primitive) {
case TessPrimitive::Triangles:
@ -250,6 +281,7 @@ void EmitContext::SetupExtensions(std::string&) {
// TODO: track this usage
header += "#extension GL_ARB_sparse_texture2 : enable\n";
header += "#extension GL_EXT_texture_shadow_lod : enable\n";
header += "#extension GL_EXT_shader_image_load_formatted : enable\n";
if (info.uses_int64) {
header += "#extension GL_ARB_gpu_shader_int64 : enable\n";
}
@ -396,15 +428,25 @@ void EmitContext::DefineHelperFunctions() {
void EmitContext::SetupImages(Bindings& bindings) {
image_buffer_bindings.reserve(info.image_buffer_descriptors.size());
for (const auto& desc : info.image_buffer_descriptors) {
throw NotImplementedException("image_buffer_descriptors");
const auto indices{bindings.image + desc.count};
for (u32 index = bindings.image; index < indices; ++index) {
header += fmt::format("layout(binding={}) uniform uimageBuffer img{};", bindings.image,
index);
}
image_buffer_bindings.push_back(bindings.image);
bindings.image += desc.count;
}
image_bindings.reserve(info.image_descriptors.size());
for (const auto& desc : info.image_descriptors) {
throw NotImplementedException("image_bindings");
image_bindings.push_back(bindings.image);
const auto format{ImageFormatString(desc.format)};
const auto image_type{ImageType(desc.type)};
const auto qualifier{desc.is_written ? "" : "readonly "};
const auto indices{bindings.image + desc.count};
for (u32 index = bindings.image; index < indices; ++index) {
header += fmt::format("layout(binding={}{})uniform {}{} img{};", bindings.image, format,
qualifier, image_type, index);
}
bindings.image += desc.count;
}
texture_buffer_bindings.reserve(info.texture_buffer_descriptors.size());