From 3d07cef009cf9e287744c7771c67166ef5761ce8 Mon Sep 17 00:00:00 2001 From: ameerj <52414509+ameerj@users.noreply.github.com> Date: Tue, 23 Mar 2021 20:27:17 -0400 Subject: shader: Implement VOTE --- .../backend/spirv/emit_context.cpp | 4 ++ src/shader_recompiler/backend/spirv/emit_context.h | 3 +- src/shader_recompiler/backend/spirv/emit_spirv.cpp | 9 ++++ src/shader_recompiler/backend/spirv/emit_spirv.h | 4 ++ .../backend/spirv/emit_spirv_vote.cpp | 58 ++++++++++++++++++++++ 5 files changed, 77 insertions(+), 1 deletion(-) create mode 100644 src/shader_recompiler/backend/spirv/emit_spirv_vote.cpp (limited to 'src/shader_recompiler/backend') diff --git a/src/shader_recompiler/backend/spirv/emit_context.cpp b/src/shader_recompiler/backend/spirv/emit_context.cpp index 4a4de3676..36f130781 100644 --- a/src/shader_recompiler/backend/spirv/emit_context.cpp +++ b/src/shader_recompiler/backend/spirv/emit_context.cpp @@ -259,6 +259,10 @@ void EmitContext::DefineInputs(const Info& info, Stage stage) { if (info.uses_local_invocation_id) { local_invocation_id = DefineInput(*this, U32[3], spv::BuiltIn::LocalInvocationId); } + if (profile.warp_size_potentially_larger_than_guest && info.uses_subgroup_vote) { + subgroup_local_invocation_id = + DefineInput(*this, U32[1], spv::BuiltIn::SubgroupLocalInvocationId); + } if (info.loads_position) { const bool is_fragment{stage != Stage::Fragment}; const spv::BuiltIn built_in{is_fragment ? spv::BuiltIn::Position : spv::BuiltIn::FragCoord}; diff --git a/src/shader_recompiler/backend/spirv/emit_context.h b/src/shader_recompiler/backend/spirv/emit_context.h index 9b9e0d6b1..6e64360bf 100644 --- a/src/shader_recompiler/backend/spirv/emit_context.h +++ b/src/shader_recompiler/backend/spirv/emit_context.h @@ -82,6 +82,7 @@ public: Id workgroup_id{}; Id local_invocation_id{}; + Id subgroup_local_invocation_id{}; Id instance_id{}; Id instance_index{}; Id base_instance{}; @@ -96,7 +97,7 @@ public: std::array output_generics{}; std::array frag_color{}; - Id frag_depth {}; + Id frag_depth{}; std::vector interfaces; diff --git a/src/shader_recompiler/backend/spirv/emit_spirv.cpp b/src/shader_recompiler/backend/spirv/emit_spirv.cpp index 93e851133..107403912 100644 --- a/src/shader_recompiler/backend/spirv/emit_spirv.cpp +++ b/src/shader_recompiler/backend/spirv/emit_spirv.cpp @@ -224,6 +224,15 @@ 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 && profile.support_vote) { + ctx.AddExtension("SPV_KHR_shader_ballot"); + ctx.AddCapability(spv::Capability::SubgroupBallotKHR); + if (!profile.warp_size_potentially_larger_than_guest) { + // vote ops are only used when not taking the long path + ctx.AddExtension("SPV_KHR_subgroup_vote"); + ctx.AddCapability(spv::Capability::SubgroupVoteKHR); + } + } // TODO: Track this usage ctx.AddCapability(spv::Capability::ImageGatherExtended); } diff --git a/src/shader_recompiler/backend/spirv/emit_spirv.h b/src/shader_recompiler/backend/spirv/emit_spirv.h index 960d022ff..ce23200f2 100644 --- a/src/shader_recompiler/backend/spirv/emit_spirv.h +++ b/src/shader_recompiler/backend/spirv/emit_spirv.h @@ -346,5 +346,9 @@ Id EmitImageSampleDrefImplicitLod(EmitContext& ctx, IR::Inst* inst, const IR::Va Id coords, Id dref, Id bias_lc, Id offset); Id EmitImageSampleDrefExplicitLod(EmitContext& ctx, IR::Inst* inst, const IR::Value& index, Id coords, Id dref, Id lod_lc, Id offset); +Id EmitVoteAll(EmitContext& ctx, Id pred); +Id EmitVoteAny(EmitContext& ctx, Id pred); +Id EmitVoteEqual(EmitContext& ctx, Id pred); +Id EmitSubgroupBallot(EmitContext& ctx, Id pred); } // namespace Shader::Backend::SPIRV diff --git a/src/shader_recompiler/backend/spirv/emit_spirv_vote.cpp b/src/shader_recompiler/backend/spirv/emit_spirv_vote.cpp new file mode 100644 index 000000000..a63677ef2 --- /dev/null +++ b/src/shader_recompiler/backend/spirv/emit_spirv_vote.cpp @@ -0,0 +1,58 @@ +// Copyright 2021 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#include "shader_recompiler/backend/spirv/emit_spirv.h" + +namespace Shader::Backend::SPIRV { +namespace { +Id LargeWarpBallot(EmitContext& ctx, Id ballot) { + const Id shift{ctx.Constant(ctx.U32[1], 5)}; + const Id local_index{ctx.OpLoad(ctx.U32[1], ctx.subgroup_local_invocation_id)}; + return ctx.OpVectorExtractDynamic(ctx.U32[1], ballot, local_index); +} +} // Anonymous namespace + +Id EmitVoteAll(EmitContext& ctx, Id pred) { + if (!ctx.profile.warp_size_potentially_larger_than_guest) { + return ctx.OpSubgroupAllKHR(ctx.U1, pred); + } + const Id mask_ballot{ctx.OpSubgroupBallotKHR(ctx.U32[4], ctx.true_value)}; + const Id active_mask{LargeWarpBallot(ctx, mask_ballot)}; + const Id ballot{LargeWarpBallot(ctx, ctx.OpSubgroupBallotKHR(ctx.U32[4], pred))}; + const Id lhs{ctx.OpBitwiseAnd(ctx.U32[1], ballot, active_mask)}; + return ctx.OpIEqual(ctx.U1, lhs, active_mask); +} + +Id EmitVoteAny(EmitContext& ctx, Id pred) { + if (!ctx.profile.warp_size_potentially_larger_than_guest) { + return ctx.OpSubgroupAnyKHR(ctx.U1, pred); + } + const Id mask_ballot{ctx.OpSubgroupBallotKHR(ctx.U32[4], ctx.true_value)}; + const Id active_mask{LargeWarpBallot(ctx, mask_ballot)}; + const Id ballot{LargeWarpBallot(ctx, ctx.OpSubgroupBallotKHR(ctx.U32[4], pred))}; + const Id lhs{ctx.OpBitwiseAnd(ctx.U32[1], ballot, active_mask)}; + return ctx.OpINotEqual(ctx.U1, lhs, ctx.u32_zero_value); +} + +Id EmitVoteEqual(EmitContext& ctx, Id pred) { + if (!ctx.profile.warp_size_potentially_larger_than_guest) { + return ctx.OpSubgroupAllEqualKHR(ctx.U1, pred); + } + const Id mask_ballot{ctx.OpSubgroupBallotKHR(ctx.U32[4], ctx.true_value)}; + const Id active_mask{LargeWarpBallot(ctx, mask_ballot)}; + const Id ballot{LargeWarpBallot(ctx, ctx.OpSubgroupBallotKHR(ctx.U32[4], pred))}; + const Id lhs{ctx.OpBitwiseXor(ctx.U32[1], ballot, active_mask)}; + return ctx.OpLogicalOr(ctx.U1, ctx.OpIEqual(ctx.U1, lhs, ctx.u32_zero_value), + ctx.OpIEqual(ctx.U1, lhs, active_mask)); +} + +Id EmitSubgroupBallot(EmitContext& ctx, Id pred) { + const Id ballot{ctx.OpSubgroupBallotKHR(ctx.U32[4], pred)}; + if (!ctx.profile.warp_size_potentially_larger_than_guest) { + return ctx.OpCompositeExtract(ctx.U32[1], ballot, 0U); + } + return LargeWarpBallot(ctx, ballot); +} + +} // namespace Shader::Backend::SPIRV -- cgit v1.2.3