suyu/src/shader_recompiler/backend/glasm/emit_context.cpp
ReinUsesLisp 916ca74324 opengl: Declare fragment outputs even if they are not used
Fixes Ori and the Blind Forest's menu on GLASM. For some reason
(probably high level optimizations) it is not sanitized on SPIR-V for
OpenGL. Vulkan is unaffected by this change.
2021-07-22 21:51:34 -04:00

153 lines
5.7 KiB
C++

// Copyright 2021 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <string_view>
#include "shader_recompiler/backend/bindings.h"
#include "shader_recompiler/backend/glasm/emit_context.h"
#include "shader_recompiler/frontend/ir/program.h"
#include "shader_recompiler/profile.h"
namespace Shader::Backend::GLASM {
namespace {
std::string_view InterpDecorator(Interpolation interp) {
switch (interp) {
case Interpolation::Smooth:
return "";
case Interpolation::Flat:
return "FLAT ";
case Interpolation::NoPerspective:
return "NOPERSPECTIVE ";
}
throw InvalidArgument("Invalid interpolation {}", interp);
}
bool IsInputArray(Stage stage) {
return stage == Stage::Geometry || stage == Stage::TessellationControl ||
stage == Stage::TessellationEval;
}
} // Anonymous namespace
EmitContext::EmitContext(IR::Program& program, Bindings& bindings, const Profile& profile_,
const RuntimeInfo& runtime_info_)
: info{program.info}, profile{profile_}, runtime_info{runtime_info_} {
// FIXME: Temporary partial implementation
u32 cbuf_index{};
for (const auto& desc : info.constant_buffer_descriptors) {
if (desc.count != 1) {
throw NotImplementedException("Constant buffer descriptor array");
}
Add("CBUFFER c{}[]={{program.buffer[{}]}};", desc.index, cbuf_index);
++cbuf_index;
}
u32 ssbo_index{};
for (const auto& desc : info.storage_buffers_descriptors) {
if (desc.count != 1) {
throw NotImplementedException("Storage buffer descriptor array");
}
if (runtime_info.glasm_use_storage_buffers) {
Add("STORAGE ssbo{}[]={{program.storage[{}]}};", ssbo_index, bindings.storage_buffer);
++bindings.storage_buffer;
++ssbo_index;
}
}
if (!runtime_info.glasm_use_storage_buffers) {
if (const size_t num = info.storage_buffers_descriptors.size(); num > 0) {
Add("PARAM c[{}]={{program.local[0..{}]}};", num, num - 1);
}
}
stage = program.stage;
switch (program.stage) {
case Stage::VertexA:
case Stage::VertexB:
stage_name = "vertex";
attrib_name = "vertex";
break;
case Stage::TessellationControl:
case Stage::TessellationEval:
stage_name = "primitive";
attrib_name = "primitive";
break;
case Stage::Geometry:
stage_name = "primitive";
attrib_name = "vertex";
break;
case Stage::Fragment:
stage_name = "fragment";
attrib_name = "fragment";
break;
case Stage::Compute:
stage_name = "invocation";
break;
}
const std::string_view attr_stage{stage == Stage::Fragment ? "fragment" : "vertex"};
for (size_t index = 0; index < info.input_generics.size(); ++index) {
const auto& generic{info.input_generics[index]};
if (generic.used) {
Add("{}ATTRIB in_attr{}[]={{{}.attrib[{}..{}]}};",
InterpDecorator(generic.interpolation), index, attr_stage, index, index);
}
}
if (IsInputArray(stage) && info.loads_position) {
Add("ATTRIB vertex_position=vertex.position;");
}
if (info.uses_invocation_id) {
Add("ATTRIB primitive_invocation=primitive.invocation;");
}
if (info.stores_tess_level_outer) {
Add("OUTPUT result_patch_tessouter[]={{result.patch.tessouter[0..3]}};");
}
if (info.stores_tess_level_inner) {
Add("OUTPUT result_patch_tessinner[]={{result.patch.tessinner[0..1]}};");
}
if (info.stores_clip_distance) {
Add("OUTPUT result_clip[]={{result.clip[0..7]}};");
}
for (size_t index = 0; index < info.uses_patches.size(); ++index) {
if (!info.uses_patches[index]) {
continue;
}
if (stage == Stage::TessellationControl) {
Add("OUTPUT result_patch_attrib{}[]={{result.patch.attrib[{}..{}]}};"
"ATTRIB primitive_out_patch_attrib{}[]={{primitive.out.patch.attrib[{}..{}]}};",
index, index, index, index, index, index);
} else {
Add("ATTRIB primitive_patch_attrib{}[]={{primitive.patch.attrib[{}..{}]}};", index,
index, index);
}
}
if (stage == Stage::Fragment) {
Add("OUTPUT frag_color0=result.color;");
for (size_t index = 1; index < info.stores_frag_color.size(); ++index) {
Add("OUTPUT frag_color{}=result.color[{}];", index, index);
}
}
for (size_t index = 0; index < info.stores_generics.size(); ++index) {
if (info.stores_generics[index]) {
Add("OUTPUT out_attr{}[]={{result.attrib[{}..{}]}};", index, index, index);
}
}
image_buffer_bindings.reserve(info.image_buffer_descriptors.size());
for (const auto& desc : info.image_buffer_descriptors) {
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) {
image_bindings.push_back(bindings.image);
bindings.image += desc.count;
}
texture_buffer_bindings.reserve(info.texture_buffer_descriptors.size());
for (const auto& desc : info.texture_buffer_descriptors) {
texture_buffer_bindings.push_back(bindings.texture);
bindings.texture += desc.count;
}
texture_bindings.reserve(info.texture_descriptors.size());
for (const auto& desc : info.texture_descriptors) {
texture_bindings.push_back(bindings.texture);
bindings.texture += desc.count;
}
}
} // namespace Shader::Backend::GLASM