136 lines
6 KiB
C++
136 lines
6 KiB
C++
// 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 "shader_recompiler/backend/spirv/emit_spirv.h"
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namespace Shader::Backend::SPIRV {
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namespace {
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Id LargeWarpBallot(EmitContext& ctx, Id ballot) {
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const Id shift{ctx.Constant(ctx.U32[1], 5)};
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const Id local_index{ctx.OpLoad(ctx.U32[1], ctx.subgroup_local_invocation_id)};
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return ctx.OpVectorExtractDynamic(ctx.U32[1], ballot, local_index);
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}
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void SetInBoundsFlag(IR::Inst* inst, Id result) {
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IR::Inst* const in_bounds{inst->GetAssociatedPseudoOperation(IR::Opcode::GetInBoundsFromOp)};
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if (!in_bounds) {
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return;
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}
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in_bounds->SetDefinition(result);
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in_bounds->Invalidate();
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}
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Id ComputeMinThreadId(EmitContext& ctx, Id thread_id, Id segmentation_mask) {
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return ctx.OpBitwiseAnd(ctx.U32[1], thread_id, segmentation_mask);
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}
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Id ComputeMaxThreadId(EmitContext& ctx, Id min_thread_id, Id clamp, Id not_seg_mask) {
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return ctx.OpBitwiseOr(ctx.U32[1], min_thread_id,
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ctx.OpBitwiseAnd(ctx.U32[1], clamp, not_seg_mask));
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}
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Id GetMaxThreadId(EmitContext& ctx, Id thread_id, Id clamp, Id segmentation_mask) {
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const Id not_seg_mask{ctx.OpNot(ctx.U32[1], segmentation_mask)};
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const Id min_thread_id{ComputeMinThreadId(ctx, thread_id, segmentation_mask)};
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return ComputeMaxThreadId(ctx, min_thread_id, clamp, not_seg_mask);
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}
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Id SelectValue(EmitContext& ctx, Id in_range, Id value, Id src_thread_id) {
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return ctx.OpSelect(ctx.U32[1], in_range,
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ctx.OpSubgroupReadInvocationKHR(ctx.U32[1], value, src_thread_id), value);
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}
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} // Anonymous namespace
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Id EmitVoteAll(EmitContext& ctx, Id pred) {
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if (!ctx.profile.warp_size_potentially_larger_than_guest) {
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return ctx.OpSubgroupAllKHR(ctx.U1, pred);
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}
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const Id mask_ballot{ctx.OpSubgroupBallotKHR(ctx.U32[4], ctx.true_value)};
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const Id active_mask{LargeWarpBallot(ctx, mask_ballot)};
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const Id ballot{LargeWarpBallot(ctx, ctx.OpSubgroupBallotKHR(ctx.U32[4], pred))};
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const Id lhs{ctx.OpBitwiseAnd(ctx.U32[1], ballot, active_mask)};
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return ctx.OpIEqual(ctx.U1, lhs, active_mask);
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}
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Id EmitVoteAny(EmitContext& ctx, Id pred) {
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if (!ctx.profile.warp_size_potentially_larger_than_guest) {
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return ctx.OpSubgroupAnyKHR(ctx.U1, pred);
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}
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const Id mask_ballot{ctx.OpSubgroupBallotKHR(ctx.U32[4], ctx.true_value)};
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const Id active_mask{LargeWarpBallot(ctx, mask_ballot)};
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const Id ballot{LargeWarpBallot(ctx, ctx.OpSubgroupBallotKHR(ctx.U32[4], pred))};
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const Id lhs{ctx.OpBitwiseAnd(ctx.U32[1], ballot, active_mask)};
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return ctx.OpINotEqual(ctx.U1, lhs, ctx.u32_zero_value);
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}
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Id EmitVoteEqual(EmitContext& ctx, Id pred) {
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if (!ctx.profile.warp_size_potentially_larger_than_guest) {
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return ctx.OpSubgroupAllEqualKHR(ctx.U1, pred);
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}
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const Id mask_ballot{ctx.OpSubgroupBallotKHR(ctx.U32[4], ctx.true_value)};
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const Id active_mask{LargeWarpBallot(ctx, mask_ballot)};
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const Id ballot{LargeWarpBallot(ctx, ctx.OpSubgroupBallotKHR(ctx.U32[4], pred))};
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const Id lhs{ctx.OpBitwiseXor(ctx.U32[1], ballot, active_mask)};
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return ctx.OpLogicalOr(ctx.U1, ctx.OpIEqual(ctx.U1, lhs, ctx.u32_zero_value),
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ctx.OpIEqual(ctx.U1, lhs, active_mask));
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}
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Id EmitSubgroupBallot(EmitContext& ctx, Id pred) {
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const Id ballot{ctx.OpSubgroupBallotKHR(ctx.U32[4], pred)};
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if (!ctx.profile.warp_size_potentially_larger_than_guest) {
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return ctx.OpCompositeExtract(ctx.U32[1], ballot, 0U);
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}
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return LargeWarpBallot(ctx, ballot);
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}
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Id EmitShuffleIndex(EmitContext& ctx, IR::Inst* inst, Id value, Id index, Id clamp,
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Id segmentation_mask) {
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const Id not_seg_mask{ctx.OpNot(ctx.U32[1], segmentation_mask)};
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const Id thread_id{ctx.OpLoad(ctx.U32[1], ctx.subgroup_local_invocation_id)};
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const Id min_thread_id{ComputeMinThreadId(ctx, thread_id, segmentation_mask)};
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const Id max_thread_id{ComputeMaxThreadId(ctx, min_thread_id, clamp, not_seg_mask)};
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const Id lhs{ctx.OpBitwiseAnd(ctx.U32[1], index, not_seg_mask)};
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const Id src_thread_id{ctx.OpBitwiseOr(ctx.U32[1], lhs, min_thread_id)};
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const Id in_range{ctx.OpSLessThanEqual(ctx.U1, src_thread_id, max_thread_id)};
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SetInBoundsFlag(inst, in_range);
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return SelectValue(ctx, in_range, value, src_thread_id);
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}
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Id EmitShuffleUp(EmitContext& ctx, IR::Inst* inst, Id value, Id index, Id clamp,
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Id segmentation_mask) {
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const Id thread_id{ctx.OpLoad(ctx.U32[1], ctx.subgroup_local_invocation_id)};
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const Id max_thread_id{GetMaxThreadId(ctx, thread_id, clamp, segmentation_mask)};
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const Id src_thread_id{ctx.OpISub(ctx.U32[1], thread_id, index)};
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const Id in_range{ctx.OpSGreaterThanEqual(ctx.U1, src_thread_id, max_thread_id)};
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SetInBoundsFlag(inst, in_range);
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return SelectValue(ctx, in_range, value, src_thread_id);
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}
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Id EmitShuffleDown(EmitContext& ctx, IR::Inst* inst, Id value, Id index, Id clamp,
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Id segmentation_mask) {
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const Id thread_id{ctx.OpLoad(ctx.U32[1], ctx.subgroup_local_invocation_id)};
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const Id max_thread_id{GetMaxThreadId(ctx, thread_id, clamp, segmentation_mask)};
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const Id src_thread_id{ctx.OpIAdd(ctx.U32[1], thread_id, index)};
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const Id in_range{ctx.OpSLessThanEqual(ctx.U1, src_thread_id, max_thread_id)};
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SetInBoundsFlag(inst, in_range);
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return SelectValue(ctx, in_range, value, src_thread_id);
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}
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Id EmitShuffleButterfly(EmitContext& ctx, IR::Inst* inst, Id value, Id index, Id clamp,
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Id segmentation_mask) {
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const Id thread_id{ctx.OpLoad(ctx.U32[1], ctx.subgroup_local_invocation_id)};
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const Id max_thread_id{GetMaxThreadId(ctx, thread_id, clamp, segmentation_mask)};
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const Id src_thread_id{ctx.OpBitwiseXor(ctx.U32[1], thread_id, index)};
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const Id in_range{ctx.OpSLessThanEqual(ctx.U1, src_thread_id, max_thread_id)};
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SetInBoundsFlag(inst, in_range);
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return SelectValue(ctx, in_range, value, src_thread_id);
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}
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} // namespace Shader::Backend::SPIRV
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