// SPDX-FileCopyrightText: Copyright 2024 shadPS4 Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later

#include "shader_recompiler/backend/spirv/emit_spirv_instructions.h"
#include "shader_recompiler/backend/spirv/spirv_emit_context.h"

namespace Shader::Backend::SPIRV {

Id SubgroupScope(EmitContext& ctx) {
    return ctx.ConstU32(static_cast<u32>(spv::Scope::Subgroup));
}

Id EmitWarpId(EmitContext& ctx) {
    UNREACHABLE();
}

Id EmitLaneId(EmitContext& ctx) {
    return ctx.OpLoad(ctx.U32[1], ctx.subgroup_local_invocation_id);
}

Id EmitQuadShuffle(EmitContext& ctx, Id value, Id index) {
    return ctx.OpGroupNonUniformQuadBroadcast(ctx.U32[1], SubgroupScope(ctx), value, index);
}

Id EmitReadFirstLane(EmitContext& ctx, Id value) {
    return ctx.OpGroupNonUniformBroadcastFirst(ctx.U32[1], SubgroupScope(ctx), value);
}

Id EmitReadLane(EmitContext& ctx, Id value, u32 lane) {
    return ctx.OpGroupNonUniformBroadcast(ctx.U32[1], SubgroupScope(ctx), value,
                                          ctx.ConstU32(lane));
}

Id EmitWriteLane(EmitContext& ctx, Id value, Id write_value, u32 lane) {
    return ctx.u32_zero_value;
}

} // namespace Shader::Backend::SPIRV