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// 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/glasm/emit_context.h"
#include "shader_recompiler/backend/glasm/emit_glasm_instructions.h"
#include "shader_recompiler/frontend/ir/program.h"
#include "shader_recompiler/frontend/ir/value.h"
namespace Shader::Backend::GLASM {
namespace {
void StorageOp(EmitContext& ctx, const IR::Value& binding, ScalarU32 offset,
std::string_view then_expr, std::string_view else_expr = {}) {
// Operate on bindless SSBO, call the expression with bounds checking
// address = c[binding].xy
// length = c[binding].z
const u32 sb_binding{binding.U32()};
ctx.Add("PK64.U DC,c[{}];" // pointer = address
"CVT.U64.U32 DC.z,{};" // offset = uint64_t(offset)
"ADD.U64 DC.x,DC.x,DC.z;" // pointer += offset
"SLT.U.CC RC.x,{},c[{}].z;", // cc = offset < length
sb_binding, offset, offset, sb_binding);
if (else_expr.empty()) {
ctx.Add("IF NE.x;{}ENDIF;", then_expr);
} else {
ctx.Add("IF NE.x;{}ELSE;{}ENDIF;", then_expr, else_expr);
}
}
void GlobalStorageOp(EmitContext& ctx, Register address, std::string_view then_expr,
std::string_view else_expr = {}) {
const size_t num_buffers{ctx.info.storage_buffers_descriptors.size()};
for (size_t index = 0; index < num_buffers; ++index) {
if (!ctx.info.nvn_buffer_used[index]) {
continue;
}
const auto& ssbo{ctx.info.storage_buffers_descriptors[index]};
ctx.Add("LDC.U64 DC.x,c{}[{}];" // ssbo_addr
"LDC.U32 RC.x,c{}[{}];" // ssbo_size_u32
"CVT.U64.U32 DC.y,RC.x;" // ssbo_size = ssbo_size_u32
"ADD.U64 DC.y,DC.y,DC.x;" // ssbo_end = ssbo_addr + ssbo_size
"SGE.U64 RC.x,{}.x,DC.x;" // a = input_addr >= ssbo_addr ? -1 : 1
"SLT.U64 RC.y,{}.x,DC.y;" // b = input_addr < ssbo_end ? -1 : 1
"AND.U.CC RC.x,RC.x,RC.y;"
"IF NE.x;" // a && b
"SUB.U64 DC.x,{}.x,DC.x;" // offset = input_addr - ssbo_addr
"PK64.U DC.y,c[{}];" // host_ssbo = cbuf
"ADD.U64 DC.x,DC.x,DC.y;" // host_addr = host_ssbo + offset
"{}"
"ELSE;",
ssbo.cbuf_index, ssbo.cbuf_offset, ssbo.cbuf_index, ssbo.cbuf_offset + 8, address,
address, address, index, then_expr);
}
if (!else_expr.empty()) {
ctx.Add("{}", else_expr);
}
for (size_t index = 0; index < num_buffers; ++index) {
ctx.Add("ENDIF;");
}
}
template <typename ValueType>
void Write(EmitContext& ctx, const IR::Value& binding, ScalarU32 offset, ValueType value,
std::string_view size) {
StorageOp(ctx, binding, offset, fmt::format("STORE.{} {},DC.x;", size, value));
}
void Load(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding, ScalarU32 offset,
std::string_view size) {
const Register ret{ctx.reg_alloc.Define(inst)};
StorageOp(ctx, binding, offset, fmt::format("LOAD.{} {},DC.x;", size, ret),
fmt::format("MOV.U {},{{0,0,0,0}};", ret));
}
template <typename ValueType>
void GlobalWrite(EmitContext& ctx, Register address, ValueType value, std::string_view size) {
GlobalStorageOp(ctx, address, fmt::format("STORE.{} {},DC.x;", size, value));
}
void GlobalLoad(EmitContext& ctx, IR::Inst& inst, Register address, std::string_view size) {
const Register ret{ctx.reg_alloc.Define(inst)};
GlobalStorageOp(ctx, address, fmt::format("LOAD.{} {},DC.x;", size, ret),
fmt::format("MOV.S {},0;", ret));
}
} // Anonymous namespace
void EmitLoadGlobalU8(EmitContext& ctx, IR::Inst& inst, Register address) {
GlobalLoad(ctx, inst, address, "U8");
}
void EmitLoadGlobalS8(EmitContext& ctx, IR::Inst& inst, Register address) {
GlobalLoad(ctx, inst, address, "S8");
}
void EmitLoadGlobalU16(EmitContext& ctx, IR::Inst& inst, Register address) {
GlobalLoad(ctx, inst, address, "U16");
}
void EmitLoadGlobalS16(EmitContext& ctx, IR::Inst& inst, Register address) {
GlobalLoad(ctx, inst, address, "S16");
}
void EmitLoadGlobal32(EmitContext& ctx, IR::Inst& inst, Register address) {
GlobalLoad(ctx, inst, address, "U32");
}
void EmitLoadGlobal64(EmitContext& ctx, IR::Inst& inst, Register address) {
GlobalLoad(ctx, inst, address, "U32X2");
}
void EmitLoadGlobal128(EmitContext& ctx, IR::Inst& inst, Register address) {
GlobalLoad(ctx, inst, address, "U32X4");
}
void EmitWriteGlobalU8(EmitContext& ctx, Register address, Register value) {
GlobalWrite(ctx, address, value, "U8");
}
void EmitWriteGlobalS8(EmitContext& ctx, Register address, Register value) {
GlobalWrite(ctx, address, value, "S8");
}
void EmitWriteGlobalU16(EmitContext& ctx, Register address, Register value) {
GlobalWrite(ctx, address, value, "U16");
}
void EmitWriteGlobalS16(EmitContext& ctx, Register address, Register value) {
GlobalWrite(ctx, address, value, "S16");
}
void EmitWriteGlobal32(EmitContext& ctx, Register address, ScalarU32 value) {
GlobalWrite(ctx, address, value, "U32");
}
void EmitWriteGlobal64(EmitContext& ctx, Register address, Register value) {
GlobalWrite(ctx, address, value, "U32X2");
}
void EmitWriteGlobal128(EmitContext& ctx, Register address, Register value) {
GlobalWrite(ctx, address, value, "U32X4");
}
void EmitLoadStorageU8(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
ScalarU32 offset) {
Load(ctx, inst, binding, offset, "U8");
}
void EmitLoadStorageS8(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
ScalarU32 offset) {
Load(ctx, inst, binding, offset, "S8");
}
void EmitLoadStorageU16(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
ScalarU32 offset) {
Load(ctx, inst, binding, offset, "U16");
}
void EmitLoadStorageS16(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
ScalarU32 offset) {
Load(ctx, inst, binding, offset, "S16");
}
void EmitLoadStorage32(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
ScalarU32 offset) {
Load(ctx, inst, binding, offset, "U32");
}
void EmitLoadStorage64(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
ScalarU32 offset) {
Load(ctx, inst, binding, offset, "U32X2");
}
void EmitLoadStorage128(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
ScalarU32 offset) {
Load(ctx, inst, binding, offset, "U32X4");
}
void EmitWriteStorageU8(EmitContext& ctx, const IR::Value& binding, ScalarU32 offset,
ScalarU32 value) {
Write(ctx, binding, offset, value, "U8");
}
void EmitWriteStorageS8(EmitContext& ctx, const IR::Value& binding, ScalarU32 offset,
ScalarS32 value) {
Write(ctx, binding, offset, value, "S8");
}
void EmitWriteStorageU16(EmitContext& ctx, const IR::Value& binding, ScalarU32 offset,
ScalarU32 value) {
Write(ctx, binding, offset, value, "U16");
}
void EmitWriteStorageS16(EmitContext& ctx, const IR::Value& binding, ScalarU32 offset,
ScalarS32 value) {
Write(ctx, binding, offset, value, "S16");
}
void EmitWriteStorage32(EmitContext& ctx, const IR::Value& binding, ScalarU32 offset,
ScalarU32 value) {
Write(ctx, binding, offset, value, "U32");
}
void EmitWriteStorage64(EmitContext& ctx, const IR::Value& binding, ScalarU32 offset,
Register value) {
Write(ctx, binding, offset, value, "U32X2");
}
void EmitWriteStorage128(EmitContext& ctx, const IR::Value& binding, ScalarU32 offset,
Register value) {
Write(ctx, binding, offset, value, "U32X4");
}
} // namespace Shader::Backend::GLASM
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