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[spv, qcom] Implement warp intrinsics support

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This commit is contained in:
CamilleLaVey 2025-11-27 14:02:03 -04:00 • committed by Caio Oliveira
parent 58b43ef0b7
commit f438306c66
9 changed files with 204 additions and 14 deletions
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15
src/shader_recompiler/backend/spirv/emit_spirv.cpp
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@ -11,6 +11,7 @@
#include <vector>
#include <spirv-tools/optimizer.hpp>
#include "common/logging/log.h"
#include "common/settings.h"
#include "shader_recompiler/backend/spirv/emit_spirv.h"
#include "shader_recompiler/backend/spirv/emit_spirv_instructions.h"
@ -439,15 +440,23 @@ void SetupCapabilities(const Profile& profile, const Info& info, EmitContext& ct
ctx.AddExtension("SPV_KHR_shader_draw_parameters");
ctx.AddCapability(spv::Capability::DrawParameters);
}
if ((info.uses_subgroup_vote || info.uses_subgroup_invocation_id ||
info.uses_subgroup_shuffles) &&
profile.support_vote) {
const bool stage_supports_warp = profile.SupportsWarpIntrinsics(ctx.stage);
const bool needs_warp_intrinsics = info.uses_subgroup_vote ||
info.uses_subgroup_invocation_id ||
info.uses_subgroup_shuffles;
if (needs_warp_intrinsics && profile.support_vote && stage_supports_warp) {
ctx.AddCapability(spv::Capability::GroupNonUniformBallot);
ctx.AddCapability(spv::Capability::GroupNonUniformShuffle);
if (!profile.warp_size_potentially_larger_than_guest) {
// vote ops are only used when not taking the long path
ctx.AddCapability(spv::Capability::GroupNonUniformVote);
}
} else if (needs_warp_intrinsics && !stage_supports_warp) {
LOG_WARNING(Shader,
"Warp intrinsics requested in stage {} but the device does not report subgroup "
"support; falling back to scalar approximations",
static_cast<u32>(ctx.stage));
}
if (info.uses_int64_bit_atomics && profile.support_int64_atomics) {
ctx.AddCapability(spv::Capability::Int64Atomics);