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glsl: Implement VOTE for subgroup size potentially larger
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parent
770b754afd
commit
e35ffbbeb0
5 changed files with 43 additions and 20 deletions
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@ -122,9 +122,11 @@ EmitContext::EmitContext(IR::Program& program, Bindings& bindings, const Profile
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void EmitContext::SetupExtensions(std::string&) {
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header += "#extension GL_ARB_separate_shader_objects : enable\n";
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header += "#extension GL_ARB_sparse_texture2 : enable\n";
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header += "#extension GL_EXT_texture_shadow_lod : enable\n";
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// header += "#extension GL_ARB_texture_cube_map_array : enable\n";
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if (stage != Stage::Compute) {
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// TODO: track this usage
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header += "#extension GL_ARB_sparse_texture2 : enable\n";
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header += "#extension GL_EXT_texture_shadow_lod : enable\n";
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}
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if (info.uses_int64) {
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header += "#extension GL_ARB_gpu_shader_int64 : enable\n";
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}
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@ -149,6 +151,10 @@ void EmitContext::SetupExtensions(std::string&) {
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info.uses_subgroup_shuffles || info.uses_fswzadd) {
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header += "#extension GL_ARB_shader_ballot : enable\n";
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header += "#extension GL_ARB_shader_group_vote : enable\n";
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header += "#extension GL_KHR_shader_subgroup_basic : enable\n";
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if (!info.uses_int64) {
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header += "#extension GL_ARB_gpu_shader_int64 : enable\n";
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}
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}
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}
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@ -42,31 +42,42 @@ void EmitLaneId([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR::Inst& in
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}
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void EmitVoteAll(EmitContext& ctx, IR::Inst& inst, std::string_view pred) {
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ctx.AddU1("{}=allInvocationsEqualARB({});", inst, pred);
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// TODO:
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// if (ctx.profile.warp_size_potentially_larger_than_guest) {
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// }
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if (!ctx.profile.warp_size_potentially_larger_than_guest) {
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ctx.AddU1("{}=allInvocationsEqualARB({});", inst, pred);
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} else {
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const auto active_mask{fmt::format("uvec2(ballotARB(true))[gl_SubgroupInvocationID]")};
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const auto ballot{fmt::format("uvec2(ballotARB({}))[gl_SubgroupInvocationID]", pred)};
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ctx.AddU1("{}=({}&{})=={};", inst, ballot, active_mask, active_mask);
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}
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}
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void EmitVoteAny(EmitContext& ctx, IR::Inst& inst, std::string_view pred) {
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ctx.AddU1("{}=anyInvocationARB({});", inst, pred);
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// TODO:
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// if (ctx.profile.warp_size_potentially_larger_than_guest) {
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// }
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if (!ctx.profile.warp_size_potentially_larger_than_guest) {
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ctx.AddU1("{}=anyInvocationARB({});", inst, pred);
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} else {
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const auto active_mask{fmt::format("uvec2(ballotARB(true))[gl_SubgroupInvocationID]")};
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const auto ballot{fmt::format("uvec2(ballotARB({}))[gl_SubgroupInvocationID]", pred)};
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ctx.AddU1("{}=({}&{})!=0u;", inst, ballot, active_mask, active_mask);
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}
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}
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void EmitVoteEqual(EmitContext& ctx, IR::Inst& inst, std::string_view pred) {
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ctx.AddU1("{}=allInvocationsEqualARB({});", inst, pred);
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// TODO:
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// if (ctx.profile.warp_size_potentially_larger_than_guest) {
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// }
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if (!ctx.profile.warp_size_potentially_larger_than_guest) {
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ctx.AddU1("{}=allInvocationsEqualARB({});", inst, pred);
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} else {
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const auto active_mask{fmt::format("uvec2(ballotARB(true))[gl_SubgroupInvocationID]")};
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const auto ballot{fmt::format("uvec2(ballotARB({}))[gl_SubgroupInvocationID]", pred)};
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const auto value{fmt::format("({}^{})", ballot, active_mask)};
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ctx.AddU1("{}=({}==0)||({}=={});", inst, value, value, active_mask);
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}
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}
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void EmitSubgroupBallot(EmitContext& ctx, IR::Inst& inst, std::string_view pred) {
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ctx.AddU32("{}=uvec2(ballotARB({})).x;", inst, pred);
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// TODO:
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// if (ctx.profile.warp_size_potentially_larger_than_guest) {
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// }
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if (!ctx.profile.warp_size_potentially_larger_than_guest) {
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ctx.AddU32("{}=uvec2(ballotARB({})).x;", inst, pred);
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} else {
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ctx.AddU32("{}=uvec2(ballotARB({}))[gl_SubgroupInvocationID];", inst, pred);
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}
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}
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void EmitSubgroupEqMask(EmitContext& ctx, IR::Inst& inst) {
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@ -160,6 +160,7 @@ Device::Device() {
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has_depth_buffer_float = HasExtension(extensions, "GL_NV_depth_buffer_float");
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has_nv_gpu_shader_5 = GLAD_GL_NV_gpu_shader5;
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has_amd_shader_half_float = GLAD_GL_AMD_gpu_shader_half_float;
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warp_size_potentially_larger_than_guest = !is_nvidia && !is_intel;
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// At the moment of writing this, only Nvidia's driver optimizes BufferSubData on exclusive
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// uniform buffers as "push constants"
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@ -128,6 +128,10 @@ public:
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return has_amd_shader_half_float;
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}
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bool IsWarpSizePotentiallyLargerThanGuest() const {
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return warp_size_potentially_larger_than_guest;
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}
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private:
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static bool TestVariableAoffi();
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static bool TestPreciseBug();
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@ -161,6 +165,7 @@ private:
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bool has_depth_buffer_float{};
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bool has_nv_gpu_shader_5{};
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bool has_amd_shader_half_float{};
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bool warp_size_potentially_larger_than_guest{};
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};
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} // namespace OpenGL
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@ -220,7 +220,7 @@ ShaderCache::ShaderCache(RasterizerOpenGL& rasterizer_, Core::Frontend::EmuWindo
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.support_gl_nv_gpu_shader_5 = device.HasNvGpuShader5(),
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.support_gl_amd_gpu_shader_half_float = device.HasAmdShaderHalfFloat(),
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.warp_size_potentially_larger_than_guest = true,
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.warp_size_potentially_larger_than_guest = device.IsWarpSizePotentiallyLargerThanGuest(),
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.lower_left_origin_mode = true,
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.need_declared_frag_colors = true,
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