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Another take on the qcom/turnip missing handling for geometry stages

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This commit is contained in:
CamilleLaVey
2026-09-25 23:48:21 -04:00
parent ccbaa75e5e
commit 5dc91d7e25
7 changed files with 178 additions and 52 deletions
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src/shader_recompiler/backend/spirv/emit_spirv.cpp
+31 -2
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@@ -4,6 +4,7 @@
// SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include <algorithm>
#include <span>
#include <tuple>
#include <type_traits>
@@ -439,10 +440,13 @@ void SetupCapabilities(const Profile& profile, const Info& info, EmitContext& ct
ctx.AddCapability(spv::Capability::DrawParameters);
}
if ((info.uses_subgroup_vote || info.uses_subgroup_invocation_id ||
info.uses_subgroup_shuffles) &&
info.uses_subgroup_shuffles || info.uses_subgroup_mask) &&
profile.support_vote && profile.SupportsSubgroupStage(ctx.stage)) {
ctx.AddCapability(spv::Capability::GroupNonUniformBallot);
ctx.AddCapability(spv::Capability::GroupNonUniformShuffle);
if (info.uses_subgroup_shuffles && profile.support_shuffle_relative) {
ctx.AddCapability(spv::Capability::GroupNonUniformShuffleRelative);
}
if (!profile.warp_size_potentially_larger_than_guest) {
// vote ops are only used when not taking the long path
ctx.AddCapability(spv::Capability::GroupNonUniformVote);
@@ -521,6 +525,29 @@ void PatchPhiNodes(IR::Program& program, EmitContext& ctx) {
return { ctx.Def(phi->Arg(phi_arg)), parent };
});
}
void RewriteOpcodes(std::vector<u32>& code, std::span<const std::pair<u32, spv::Op>> rewrites) {
if (rewrites.empty()) {
return;
}
size_t offset = 5;
while (offset + 2 < code.size()) {
const u32 word_count{code[offset] >> 16};
const auto opcode{static_cast<spv::Op>(code[offset] & 0xFFFFu)};
if (word_count == 0) {
return;
}
if (opcode == spv::Op::OpGroupNonUniformShuffleXor ||
opcode == spv::Op::OpGroupNonUniformQuadBroadcast) {
const auto it{std::ranges::find(rewrites, code[offset + 2],
&std::pair<u32, spv::Op>::first)};
if (it != rewrites.end()) {
code[offset] = (code[offset] & 0xFFFF0000u) | static_cast<u32>(it->second);
}
}
offset += word_count;
}
}
} // Anonymous namespace
std::vector<u32> EmitSPIRV(const Profile& profile, const RuntimeInfo& runtime_info, IR::Program& program, Bindings& bindings) {
@@ -535,7 +562,9 @@ std::vector<u32> EmitSPIRV(const Profile& profile, const RuntimeInfo& runtime_in
SetupCapabilities(profile, program.info, ctx);
SetupTransformFeedbackCapabilities(ctx, main);
PatchPhiNodes(program, ctx);
return ctx.Assemble();
std::vector<u32> code{ctx.Assemble()};
RewriteOpcodes(code, ctx.opcode_rewrites);
return code;
}
Id EmitPhi(EmitContext& ctx, IR::Inst* inst) {
src/shader_recompiler/backend/spirv/emit_spirv_warp.cpp
+92 -35
View File
@@ -77,20 +77,57 @@ Id GetMaxThreadId(EmitContext& ctx, Id thread_id, Id clamp, Id segmentation_mask
return ComputeMaxThreadId(ctx, min_thread_id, clamp, not_seg_mask);
}
Id SelectValue(EmitContext& ctx, Id in_range, Id value, Id src_thread_id) {
if (!StageSupportsSubgroups(ctx)) {
return value;
Id HostThreadId(EmitContext& ctx, Id thread_id) {
if (!ctx.profile.warp_size_potentially_larger_than_guest) {
return thread_id;
}
return ctx.OpSelect(
ctx.U32[1], in_range,
ctx.OpGroupNonUniformShuffle(ctx.U32[1], SubgroupScope(ctx), value, src_thread_id), value);
}
Id AddPartitionBase(EmitContext& ctx, Id thread_id) {
const Id partition_idx{ctx.OpShiftRightLogical(ctx.U32[1], GetThreadId(ctx), ctx.Const(5u))};
const Id partition_base{ctx.OpShiftLeftLogical(ctx.U32[1], partition_idx, ctx.Const(5u))};
return ctx.OpIAdd(ctx.U32[1], thread_id, partition_base);
}
Id GuestLane(EmitContext& ctx, Id index) {
return ctx.OpBitwiseAnd(ctx.U32[1], index, ctx.Const(31U));
}
Id ShuffleAbsolute(EmitContext& ctx, Id value, Id src_thread_id) {
if (!ctx.profile.has_broken_spirv_subgroup_shuffle) {
return ctx.OpGroupNonUniformShuffle(ctx.U32[1], SubgroupScope(ctx), value, src_thread_id);
}
Id result{ctx.u32_zero_value};
for (u32 lane = 0; lane < ctx.profile.max_subgroup_size; ++lane) {
const Id read{
ctx.OpGroupNonUniformBroadcast(ctx.U32[1], SubgroupScope(ctx), value, ctx.Const(lane))};
const Id matches{ctx.OpIEqual(ctx.U1, src_thread_id, ctx.Const(lane))};
result = ctx.OpSelect(ctx.U32[1], matches, read, result);
}
return result;
}
Id ShuffleRelative(EmitContext& ctx, Id value, Id delta, Id src_thread_id, spv::Op op) {
if (!ctx.profile.support_shuffle_relative) {
return ShuffleAbsolute(ctx, value, HostThreadId(ctx, src_thread_id));
}
const Id result{ctx.OpGroupNonUniformShuffleXor(ctx.U32[1], SubgroupScope(ctx), value, delta)};
ctx.opcode_rewrites.emplace_back(result.value, op);
return result;
}
Id BroadcastLane(EmitContext& ctx, Id value, u32 lane) {
Id result{
ctx.OpGroupNonUniformBroadcast(ctx.U32[1], SubgroupScope(ctx), value, ctx.Const(lane))};
if (!ctx.profile.warp_size_potentially_larger_than_guest) {
return result;
}
const Id partition_idx{ctx.OpShiftRightLogical(ctx.U32[1], GetThreadId(ctx), ctx.Const(5u))};
for (u32 base = 32; base < ctx.profile.max_subgroup_size; base += 32) {
const Id read{ctx.OpGroupNonUniformBroadcast(ctx.U32[1], SubgroupScope(ctx), value,
ctx.Const(base + lane))};
const Id matches{ctx.OpIEqual(ctx.U1, partition_idx, ctx.Const(base >> 5))};
result = ctx.OpSelect(ctx.U32[1], matches, read, result);
}
return result;
}
} // Anonymous namespace
Id EmitLaneId(EmitContext& ctx) {
@@ -203,61 +240,75 @@ Id EmitShuffleIndex(EmitContext& ctx, IR::Inst* inst, Id value, Id index, Id cla
const Id min_thread_id{ComputeMinThreadId(ctx, thread_id, segmentation_mask)};
const Id max_thread_id{ComputeMaxThreadId(ctx, min_thread_id, clamp, not_seg_mask)};
const Id lhs{ctx.OpBitwiseAnd(ctx.U32[1], index, not_seg_mask)};
Id src_thread_id{ctx.OpBitwiseOr(ctx.U32[1], lhs, min_thread_id)};
const Id lhs{ctx.OpBitwiseAnd(ctx.U32[1], GuestLane(ctx, index), not_seg_mask)};
const Id src_thread_id{ctx.OpBitwiseOr(ctx.U32[1], lhs, min_thread_id)};
const Id in_range{ctx.OpSLessThanEqual(ctx.U1, src_thread_id, max_thread_id)};
if (ctx.profile.warp_size_potentially_larger_than_guest) {
src_thread_id = AddPartitionBase(ctx, src_thread_id);
}
SetInBoundsFlag(inst, in_range);
return SelectValue(ctx, in_range, value, src_thread_id);
if (!StageSupportsSubgroups(ctx)) {
return value;
}
const IR::Value lane{inst->Arg(1).Resolve()};
const IR::Value segment{inst->Arg(3).Resolve()};
if (lane.IsImmediate() && segment.IsImmediate() && segment.U32() == 0) {
return ctx.OpSelect(ctx.U32[1], in_range, BroadcastLane(ctx, value, lane.U32() & 31),
value);
}
const Id shuffled{ShuffleAbsolute(ctx, value, HostThreadId(ctx, src_thread_id))};
return ctx.OpSelect(ctx.U32[1], in_range, shuffled, value);
}
Id EmitShuffleUp(EmitContext& ctx, IR::Inst* inst, Id value, Id index, Id clamp,
Id segmentation_mask) {
if (!StageSupportsSubgroups(ctx)) {
SetInBoundsFlag(inst, ctx.false_value);
return value;
}
const Id delta{GuestLane(ctx, index)};
const Id thread_id{EmitLaneId(ctx)};
const Id max_thread_id{GetMaxThreadId(ctx, thread_id, clamp, segmentation_mask)};
Id src_thread_id{ctx.OpISub(ctx.U32[1], thread_id, index)};
const Id src_thread_id{ctx.OpISub(ctx.U32[1], thread_id, delta)};
const Id in_range{ctx.OpSGreaterThanEqual(ctx.U1, src_thread_id, max_thread_id)};
if (ctx.profile.warp_size_potentially_larger_than_guest) {
src_thread_id = AddPartitionBase(ctx, src_thread_id);
}
SetInBoundsFlag(inst, in_range);
return SelectValue(ctx, in_range, value, src_thread_id);
const Id shuffled{ShuffleRelative(ctx, value, delta, src_thread_id,
spv::Op::OpGroupNonUniformShuffleUp)};
return ctx.OpSelect(ctx.U32[1], in_range, shuffled, value);
}
Id EmitShuffleDown(EmitContext& ctx, IR::Inst* inst, Id value, Id index, Id clamp,
Id segmentation_mask) {
if (!StageSupportsSubgroups(ctx)) {
SetInBoundsFlag(inst, ctx.false_value);
return value;
}
const Id delta{GuestLane(ctx, index)};
const Id thread_id{EmitLaneId(ctx)};
const Id max_thread_id{GetMaxThreadId(ctx, thread_id, clamp, segmentation_mask)};
Id src_thread_id{ctx.OpIAdd(ctx.U32[1], thread_id, index)};
const Id src_thread_id{ctx.OpIAdd(ctx.U32[1], thread_id, delta)};
const Id in_range{ctx.OpSLessThanEqual(ctx.U1, src_thread_id, max_thread_id)};
if (ctx.profile.warp_size_potentially_larger_than_guest) {
src_thread_id = AddPartitionBase(ctx, src_thread_id);
}
SetInBoundsFlag(inst, in_range);
return SelectValue(ctx, in_range, value, src_thread_id);
const Id shuffled{ShuffleRelative(ctx, value, delta, src_thread_id,
spv::Op::OpGroupNonUniformShuffleDown)};
return ctx.OpSelect(ctx.U32[1], in_range, shuffled, value);
}
Id EmitShuffleButterfly(EmitContext& ctx, IR::Inst* inst, Id value, Id index, Id clamp,
Id segmentation_mask) {
if (!StageSupportsSubgroups(ctx)) {
SetInBoundsFlag(inst, ctx.false_value);
return value;
}
const Id mask{GuestLane(ctx, index)};
const Id thread_id{EmitLaneId(ctx)};
const Id max_thread_id{GetMaxThreadId(ctx, thread_id, clamp, segmentation_mask)};
Id src_thread_id{ctx.OpBitwiseXor(ctx.U32[1], thread_id, index)};
const Id src_thread_id{ctx.OpBitwiseXor(ctx.U32[1], thread_id, mask)};
const Id in_range{ctx.OpSLessThanEqual(ctx.U1, src_thread_id, max_thread_id)};
if (ctx.profile.warp_size_potentially_larger_than_guest) {
src_thread_id = AddPartitionBase(ctx, src_thread_id);
}
SetInBoundsFlag(inst, in_range);
return SelectValue(ctx, in_range, value, src_thread_id);
const Id shuffled{ctx.OpGroupNonUniformShuffleXor(ctx.U32[1], SubgroupScope(ctx), value, mask)};
return ctx.OpSelect(ctx.U32[1], in_range, shuffled, value);
}
Id EmitQuadBroadcast(EmitContext& ctx, Id value, Id lane) {
@@ -267,10 +318,16 @@ Id EmitQuadBroadcast(EmitContext& ctx, Id value, Id lane) {
const Id base{ctx.OpBitwiseAnd(ctx.U32[1], GetThreadId(ctx), ctx.Const(~3u))};
const Id local_lane{ctx.OpBitwiseAnd(ctx.U32[1], lane, ctx.Const(3u))};
const Id src_thread_id{ctx.OpBitwiseOr(ctx.U32[1], base, local_lane)};
return ctx.OpGroupNonUniformShuffle(ctx.U32[1], SubgroupScope(ctx), value, src_thread_id);
return ShuffleAbsolute(ctx, value, src_thread_id);
}
Id EmitQuadSwap(EmitContext& ctx, Id value, Id direction) {
if (ctx.profile.support_quad_shuffles) {
const Id result{
ctx.OpGroupNonUniformQuadBroadcast(ctx.U32[1], SubgroupScope(ctx), value, direction)};
ctx.opcode_rewrites.emplace_back(result.value, spv::Op::OpGroupNonUniformQuadSwap);
return result;
}
const Id xor_mask{ctx.OpIAdd(ctx.U32[1], direction, ctx.Const(1u))};
return ctx.OpGroupNonUniformShuffleXor(ctx.U32[1], SubgroupScope(ctx), value, xor_mask);
}
src/shader_recompiler/backend/spirv/spirv_emit_context.h
+1
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@@ -361,6 +361,7 @@ public:
Id frag_depth{};
std::vector<Id> interfaces;
std::vector<std::pair<u32, spv::Op>> opcode_rewrites;
Id load_const_func_u8{};
Id load_const_func_u16{};