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// SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "shader_recompiler/backend/bindings.h"
#include "shader_recompiler/backend/glasm/emit_glasm.h"
#include "shader_recompiler/backend/glasm/glasm_emit_context.h"
#include "shader_recompiler/frontend/ir/program.h"
#include "shader_recompiler/profile.h"
#include "shader_recompiler/runtime_info.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) {
const size_t index{num + PROGRAM_LOCAL_PARAMETER_STORAGE_BUFFER_BASE};
Add("PARAM c[{}]={{program.local[0..{}]}};", index, index - 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"};
const VaryingState loads{info.loads.mask | info.passthrough.mask};
for (size_t index = 0; index < IR::NUM_GENERICS; ++index) {
if (loads.Generic(index)) {
Add("{}ATTRIB in_attr{}[]={{{}.attrib[{}..{}]}};",
InterpDecorator(info.interpolation[index]), index, attr_stage, index, index);
}
}
if (IsInputArray(stage) && loads.AnyComponent(IR::Attribute::PositionX)) {
Add("ATTRIB vertex_position=vertex.position;");
}
if (info.uses_invocation_id) {
Add("ATTRIB primitive_invocation=primitive.invocation;");
}
if (info.uses_invocation_info &&
(stage == Stage::TessellationControl || stage == Stage::TessellationEval)) {
Add("ATTRIB primitive_vertexcount = primitive.vertexcount;");
}
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.ClipDistances()) {
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 < IR::NUM_GENERICS; ++index) {
if (info.stores.Generic(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
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