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glsl: Rework Shuffle emit instructions to align with SPIR-V
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8ba814efb2
commit
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1 changed files with 40 additions and 19 deletions
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@ -14,51 +14,72 @@ void SetInBoundsFlag(EmitContext& ctx, IR::Inst& inst) {
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if (!in_bounds) {
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return;
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}
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ctx.AddU1("{}=shfl_in_bounds;", *in_bounds);
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in_bounds->Invalidate();
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}
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std::string ComputeMinThreadId(std::string_view thread_id, std::string_view segmentation_mask) {
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return fmt::format("({}&{})", thread_id, segmentation_mask);
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}
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std::string ComputeMaxThreadId(std::string_view min_thread_id, std::string_view clamp,
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std::string_view not_seg_mask) {
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return fmt::format("({})|({}&{})", min_thread_id, clamp, not_seg_mask);
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}
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std::string GetMaxThreadId(std::string_view thread_id, std::string_view clamp,
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std::string_view segmentation_mask) {
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const auto not_seg_mask{fmt::format("(~{})", segmentation_mask)};
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const auto min_thread_id{ComputeMinThreadId(thread_id, segmentation_mask)};
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return ComputeMaxThreadId(min_thread_id, clamp, not_seg_mask);
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}
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} // namespace
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void EmitShuffleIndex(EmitContext& ctx, IR::Inst& inst, std::string_view value,
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std::string_view index, std::string_view clamp,
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std::string_view segmentation_mask) {
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ctx.Add("shfl_in_bounds=int(gl_SubGroupInvocationARB-{})>=int((gl_SubGroupInvocationARB&{})|({}"
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"&~{}));",
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index, segmentation_mask, clamp, segmentation_mask);
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const auto not_seg_mask{fmt::format("(~{})", segmentation_mask)};
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const auto thread_id{"gl_SubGroupInvocationARB"};
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const auto min_thread_id{ComputeMinThreadId(thread_id, segmentation_mask)};
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const auto max_thread_id{ComputeMaxThreadId(min_thread_id, clamp, not_seg_mask)};
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const auto lhs{fmt::format("({}&{})", index, not_seg_mask)};
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const auto src_thread_id{fmt::format("({})|({})", lhs, min_thread_id)};
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ctx.Add("shfl_in_bounds=int({})<=int({});", src_thread_id, max_thread_id);
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SetInBoundsFlag(ctx, inst);
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ctx.AddU32("{}=shfl_in_bounds?{}:gl_SubGroupInvocationARB-{};", inst, value, index);
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ctx.AddU32("{}=shfl_in_bounds?{}:{};", inst, value, src_thread_id);
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}
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void EmitShuffleUp(EmitContext& ctx, IR::Inst& inst, std::string_view value, std::string_view index,
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std::string_view clamp, std::string_view segmentation_mask) {
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ctx.Add("shfl_in_bounds=int(gl_SubGroupInvocationARB-{})>=int((gl_SubGroupInvocationARB&{})|({}"
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"&~{}));",
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index, segmentation_mask, clamp, segmentation_mask);
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const auto thread_id{"gl_SubGroupInvocationARB"};
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const auto max_thread_id{GetMaxThreadId(thread_id, clamp, segmentation_mask)};
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const auto src_thread_id{fmt::format("({}-{})", thread_id, index)};
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ctx.Add("shfl_in_bounds=int({})>=int({});", src_thread_id, max_thread_id);
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SetInBoundsFlag(ctx, inst);
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ctx.AddU32("{}=shfl_in_bounds?readInvocationARB({},gl_SubGroupInvocationARB-{}):"
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"{};",
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inst, value, index, value);
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ctx.AddU32("{}=shfl_in_bounds?{}:{};", inst, value, src_thread_id);
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}
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void EmitShuffleDown(EmitContext& ctx, IR::Inst& inst, std::string_view value,
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std::string_view index, std::string_view clamp,
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std::string_view segmentation_mask) {
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ctx.Add("shfl_in_bounds=int(gl_SubGroupInvocationARB-{})>=int((gl_SubGroupInvocationARB&{})|({}"
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"&~{}));",
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index, segmentation_mask, clamp, segmentation_mask);
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const auto thread_id{"gl_SubGroupInvocationARB"};
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const auto max_thread_id{GetMaxThreadId(thread_id, clamp, segmentation_mask)};
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const auto src_thread_id{fmt::format("({}+{})", thread_id, index)};
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ctx.Add("shfl_in_bounds=int({})<=int({});", src_thread_id, max_thread_id);
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SetInBoundsFlag(ctx, inst);
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ctx.AddU32("{}=shfl_in_bounds?{}:gl_SubGroupInvocationARB-{};", inst, value, index);
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ctx.AddU32("{}=shfl_in_bounds?{}:{};", inst, value, src_thread_id);
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}
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void EmitShuffleButterfly(EmitContext& ctx, IR::Inst& inst, std::string_view value,
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std::string_view index, std::string_view clamp,
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std::string_view segmentation_mask) {
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ctx.Add("shfl_in_bounds=int(gl_SubGroupInvocationARB-{})>=int((gl_SubGroupInvocationARB&{})|({}"
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"&~{}));",
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index, segmentation_mask, clamp, segmentation_mask);
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const auto thread_id{"gl_SubGroupInvocationARB"};
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const auto max_thread_id{GetMaxThreadId(thread_id, clamp, segmentation_mask)};
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const auto src_thread_id{fmt::format("({}^{})", thread_id, index)};
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ctx.Add("shfl_in_bounds=int({})<=int({});", src_thread_id, max_thread_id);
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SetInBoundsFlag(ctx, inst);
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ctx.AddU32("{}=shfl_in_bounds?{}:gl_SubGroupInvocationARB-{};", inst, value, index);
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ctx.AddU32("{}=shfl_in_bounds?{}:{};", inst, value, src_thread_id);
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}
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void EmitFSwizzleAdd([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] IR::Inst& inst,
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