2021-05-08 21:28:52 +02:00
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// Copyright 2021 yuzu Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include <string_view>
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#include "shader_recompiler/backend/glasm/emit_context.h"
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#include "shader_recompiler/backend/glasm/emit_glasm_instructions.h"
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#include "shader_recompiler/frontend/ir/value.h"
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namespace Shader::Backend::GLASM {
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namespace {
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void GetCbuf(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding, const IR::Value& offset,
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std::string_view size) {
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if (!binding.IsImmediate()) {
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throw NotImplementedException("Indirect constant buffer loading");
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}
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const std::string ret{ctx.reg_alloc.Define(inst)};
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ctx.Add("LDC.{} {},c{}[{}];", size, ret, binding.U32(), ctx.reg_alloc.Consume(offset));
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}
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} // Anonymous namespace
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void EmitGetCbufU8(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
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const IR::Value& offset) {
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GetCbuf(ctx, inst, binding, offset, "U8");
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}
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void EmitGetCbufS8(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
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const IR::Value& offset) {
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GetCbuf(ctx, inst, binding, offset, "S8");
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}
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void EmitGetCbufU16(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
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const IR::Value& offset) {
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GetCbuf(ctx, inst, binding, offset, "U16");
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}
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void EmitGetCbufS16(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
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const IR::Value& offset) {
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GetCbuf(ctx, inst, binding, offset, "S16");
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}
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void EmitGetCbufU32(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
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const IR::Value& offset) {
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GetCbuf(ctx, inst, binding, offset, "U32");
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}
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void EmitGetCbufF32(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
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const IR::Value& offset) {
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GetCbuf(ctx, inst, binding, offset, "F32");
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}
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void EmitGetCbufU32x2(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
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const IR::Value& offset) {
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GetCbuf(ctx, inst, binding, offset, "U32X2");
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}
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void EmitGetAttribute(EmitContext& ctx, IR::Inst& inst, IR::Attribute attr,
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[[maybe_unused]] std::string_view vertex) {
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if (IR::IsGeneric(attr)) {
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const u32 index{IR::GenericAttributeIndex(attr)};
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const u32 element{IR::GenericAttributeElement(attr)};
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ctx.Add("MOV.F {},in_attr{}.{};", inst, index, "xyzw"[element]);
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return;
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}
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throw NotImplementedException("Get attribute {}", attr);
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}
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void EmitSetAttribute(EmitContext& ctx, IR::Attribute attr, std::string_view value,
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[[maybe_unused]] std::string_view vertex) {
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const u32 element{static_cast<u32>(attr) % 4};
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const char swizzle{"xyzw"[element]};
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if (IR::IsGeneric(attr)) {
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const u32 index{IR::GenericAttributeIndex(attr)};
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ctx.Add("MOV.F out_attr{}.{},{};", index, swizzle, value);
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return;
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}
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switch (attr) {
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case IR::Attribute::PositionX:
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case IR::Attribute::PositionY:
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case IR::Attribute::PositionZ:
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case IR::Attribute::PositionW:
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ctx.Add("MOV.F result.position.{},{};", swizzle, value);
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break;
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default:
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throw NotImplementedException("Set attribute {}", attr);
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}
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}
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void EmitGetAttributeIndexed([[maybe_unused]] EmitContext& ctx,
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[[maybe_unused]] std::string_view offset,
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[[maybe_unused]] std::string_view vertex) {
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throw NotImplementedException("GLASM instruction");
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}
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void EmitSetAttributeIndexed([[maybe_unused]] EmitContext& ctx,
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[[maybe_unused]] std::string_view offset,
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[[maybe_unused]] std::string_view value,
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[[maybe_unused]] std::string_view vertex) {
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throw NotImplementedException("GLASM instruction");
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}
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void EmitGetPatch([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR::Patch patch) {
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throw NotImplementedException("GLASM instruction");
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}
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void EmitSetPatch([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR::Patch patch,
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[[maybe_unused]] std::string_view value) {
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throw NotImplementedException("GLASM instruction");
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}
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void EmitSetFragColor([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] u32 index,
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[[maybe_unused]] u32 component, [[maybe_unused]] std::string_view value) {
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throw NotImplementedException("GLASM instruction");
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}
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void EmitSetSampleMask([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] std::string_view value) {
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throw NotImplementedException("GLASM instruction");
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}
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void EmitSetFragDepth([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] std::string_view value) {
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throw NotImplementedException("GLASM instruction");
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}
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} // namespace Shader::Backend::GLASM
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