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shader: Implement texture buffers

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This commit is contained in:
ReinUsesLisp 2021-04-06 02:56:15 -03:00 • committed by ameerj
parent dcaf0e9150
commit 1f3eb601ac
10 changed files with 158 additions and 39 deletions
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29
src/shader_recompiler/backend/spirv/emit_context.cpp
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@ -46,6 +46,8 @@ Id ImageType(EmitContext& ctx, const TextureDescriptor& desc) {
return ctx.TypeImage(type, spv::Dim::Cube, true, false, false, 1, format);
case TextureType::ShadowArrayCube:
return ctx.TypeImage(type, spv::Dim::Cube, true, true, false, 1, format);
case TextureType::Buffer:
break;
}
throw InvalidArgument("Invalid texture type {}", desc.type);
}
@ -129,6 +131,7 @@ EmitContext::EmitContext(const Profile& profile_, IR::Program& program, u32& bin
DefineConstantBuffers(program.info, binding);
DefineStorageBuffers(program.info, binding);
DefineTextures(program.info, binding);
DefineTextureBuffers(program.info, binding);
DefineAttributeMemAccess(program.info);
DefineLabels(program);
}
@ -541,6 +544,32 @@ void EmitContext::DefineTextures(const Info& info, u32& binding) {
}
}
void EmitContext::DefineTextureBuffers(const Info& info, u32& binding) {
if (info.texture_buffer_descriptors.empty()) {
return;
}
const spv::ImageFormat format{spv::ImageFormat::Unknown};
image_buffer_type = TypeImage(F32[1], spv::Dim::Buffer, 0U, false, false, 1, format);
sampled_texture_buffer_type = TypeSampledImage(image_buffer_type);
const Id type{TypePointer(spv::StorageClass::UniformConstant, sampled_texture_buffer_type)};
texture_buffers.reserve(info.texture_buffer_descriptors.size());
for (const TextureBufferDescriptor& desc : info.texture_buffer_descriptors) {
if (desc.count != 1) {
throw NotImplementedException("Array of texture buffers");
}
const Id id{AddGlobalVariable(type, spv::StorageClass::UniformConstant)};
Decorate(id, spv::Decoration::Binding, binding);
Decorate(id, spv::Decoration::DescriptorSet, 0U);
Name(id, fmt::format("texbuf{}_{:02x}", desc.cbuf_index, desc.cbuf_offset));
texture_buffers.insert(texture_buffers.end(), desc.count, id);
if (profile.supported_spirv >= 0x00010400) {
interfaces.push_back(id);
}
binding += desc.count;
}
}
void EmitContext::DefineLabels(IR::Program& program) {
for (IR::Block* const block : program.blocks) {
block->SetDefinition(OpLabel());