1 files changed, 418 insertions, 0 deletions
diff --git a/src/shader_recompiler/backend/glsl/emit_glsl_atomic.cpp b/src/shader_recompiler/backend/glsl/emit_glsl_atomic.cpp
new file mode 100644
index 000000000..772acc5a4
--- /dev/null
+++ b/src/shader_recompiler/backend/glsl/emit_glsl_atomic.cpp
@@ -0,0 +1,418 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <string_view>
+
+#include "shader_recompiler/backend/glsl/emit_context.h"
+#include "shader_recompiler/backend/glsl/emit_glsl_instructions.h"
+#include "shader_recompiler/frontend/ir/value.h"
+
+namespace Shader::Backend::GLSL {
+namespace {
+constexpr char cas_loop[]{
+    "for (;;){{uint old={};{}=atomicCompSwap({},old,{}({},{}));if({}==old){{break;}}}}"};
+
+void SharedCasFunction(EmitContext& ctx, IR::Inst& inst, std::string_view offset,
+                       std::string_view value, std::string_view function) {
+    const auto ret{ctx.var_alloc.Define(inst, GlslVarType::U32)};
+    const std::string smem{fmt::format("smem[{}>>2]", offset)};
+    ctx.Add(cas_loop, smem, ret, smem, function, smem, value, ret);
+}
+
+void SsboCasFunction(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
+                     const IR::Value& offset, std::string_view value, std::string_view function) {
+    const auto ret{ctx.var_alloc.Define(inst, GlslVarType::U32)};
+    const std::string ssbo{fmt::format("{}_ssbo{}[{}>>2]", ctx.stage_name, binding.U32(),
+                                       ctx.var_alloc.Consume(offset))};
+    ctx.Add(cas_loop, ssbo, ret, ssbo, function, ssbo, value, ret);
+}
+
+void SsboCasFunctionF32(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
+                        const IR::Value& offset, std::string_view value,
+                        std::string_view function) {
+    const std::string ssbo{fmt::format("{}_ssbo{}[{}>>2]", ctx.stage_name, binding.U32(),
+                                       ctx.var_alloc.Consume(offset))};
+    const auto ret{ctx.var_alloc.Define(inst, GlslVarType::U32)};
+    ctx.Add(cas_loop, ssbo, ret, ssbo, function, ssbo, value, ret);
+    ctx.AddF32("{}=utof({});", inst, ret);
+}
+} // Anonymous namespace
+
+void EmitSharedAtomicIAdd32(EmitContext& ctx, IR::Inst& inst, std::string_view pointer_offset,
+                            std::string_view value) {
+    ctx.AddU32("{}=atomicAdd(smem[{}>>2],{});", inst, pointer_offset, value);
+}
+
+void EmitSharedAtomicSMin32(EmitContext& ctx, IR::Inst& inst, std::string_view pointer_offset,
+                            std::string_view value) {
+    const std::string u32_value{fmt::format("uint({})", value)};
+    SharedCasFunction(ctx, inst, pointer_offset, u32_value, "CasMinS32");
+}
+
+void EmitSharedAtomicUMin32(EmitContext& ctx, IR::Inst& inst, std::string_view pointer_offset,
+                            std::string_view value) {
+    ctx.AddU32("{}=atomicMin(smem[{}>>2],{});", inst, pointer_offset, value);
+}
+
+void EmitSharedAtomicSMax32(EmitContext& ctx, IR::Inst& inst, std::string_view pointer_offset,
+                            std::string_view value) {
+    const std::string u32_value{fmt::format("uint({})", value)};
+    SharedCasFunction(ctx, inst, pointer_offset, u32_value, "CasMaxS32");
+}
+
+void EmitSharedAtomicUMax32(EmitContext& ctx, IR::Inst& inst, std::string_view pointer_offset,
+                            std::string_view value) {
+    ctx.AddU32("{}=atomicMax(smem[{}>>2],{});", inst, pointer_offset, value);
+}
+
+void EmitSharedAtomicInc32(EmitContext& ctx, IR::Inst& inst, std::string_view pointer_offset,
+                           std::string_view value) {
+    SharedCasFunction(ctx, inst, pointer_offset, value, "CasIncrement");
+}
+
+void EmitSharedAtomicDec32(EmitContext& ctx, IR::Inst& inst, std::string_view pointer_offset,
+                           std::string_view value) {
+    SharedCasFunction(ctx, inst, pointer_offset, value, "CasDecrement");
+}
+
+void EmitSharedAtomicAnd32(EmitContext& ctx, IR::Inst& inst, std::string_view pointer_offset,
+                           std::string_view value) {
+    ctx.AddU32("{}=atomicAnd(smem[{}>>2],{});", inst, pointer_offset, value);
+}
+
+void EmitSharedAtomicOr32(EmitContext& ctx, IR::Inst& inst, std::string_view pointer_offset,
+                          std::string_view value) {
+    ctx.AddU32("{}=atomicOr(smem[{}>>2],{});", inst, pointer_offset, value);
+}
+
+void EmitSharedAtomicXor32(EmitContext& ctx, IR::Inst& inst, std::string_view pointer_offset,
+                           std::string_view value) {
+    ctx.AddU32("{}=atomicXor(smem[{}>>2],{});", inst, pointer_offset, value);
+}
+
+void EmitSharedAtomicExchange32(EmitContext& ctx, IR::Inst& inst, std::string_view pointer_offset,
+                                std::string_view value) {
+    ctx.AddU32("{}=atomicExchange(smem[{}>>2],{});", inst, pointer_offset, value);
+}
+
+void EmitSharedAtomicExchange64(EmitContext& ctx, IR::Inst& inst, std::string_view pointer_offset,
+                                std::string_view value) {
+    LOG_WARNING(Shader_GLSL, "Int64 atomics not supported, fallback to non-atomic");
+    ctx.AddU64("{}=packUint2x32(uvec2(smem[{}>>2],smem[({}+4)>>2]));", inst, pointer_offset,
+               pointer_offset);
+    ctx.Add("smem[{}>>2]=unpackUint2x32({}).x;smem[({}+4)>>2]=unpackUint2x32({}).y;",
+            pointer_offset, value, pointer_offset, value);
+}
+
+void EmitStorageAtomicIAdd32(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
+                             const IR::Value& offset, std::string_view value) {
+    ctx.AddU32("{}=atomicAdd({}_ssbo{}[{}>>2],{});", inst, ctx.stage_name, binding.U32(),
+               ctx.var_alloc.Consume(offset), value);
+}
+
+void EmitStorageAtomicSMin32(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
+                             const IR::Value& offset, std::string_view value) {
+    const std::string u32_value{fmt::format("uint({})", value)};
+    SsboCasFunction(ctx, inst, binding, offset, u32_value, "CasMinS32");
+}
+
+void EmitStorageAtomicUMin32(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
+                             const IR::Value& offset, std::string_view value) {
+    ctx.AddU32("{}=atomicMin({}_ssbo{}[{}>>2],{});", inst, ctx.stage_name, binding.U32(),
+               ctx.var_alloc.Consume(offset), value);
+}
+
+void EmitStorageAtomicSMax32(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
+                             const IR::Value& offset, std::string_view value) {
+    const std::string u32_value{fmt::format("uint({})", value)};
+    SsboCasFunction(ctx, inst, binding, offset, u32_value, "CasMaxS32");
+}
+
+void EmitStorageAtomicUMax32(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
+                             const IR::Value& offset, std::string_view value) {
+    ctx.AddU32("{}=atomicMax({}_ssbo{}[{}>>2],{});", inst, ctx.stage_name, binding.U32(),
+               ctx.var_alloc.Consume(offset), value);
+}
+
+void EmitStorageAtomicInc32(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
+                            const IR::Value& offset, std::string_view value) {
+    SsboCasFunction(ctx, inst, binding, offset, value, "CasIncrement");
+}
+
+void EmitStorageAtomicDec32(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
+                            const IR::Value& offset, std::string_view value) {
+    SsboCasFunction(ctx, inst, binding, offset, value, "CasDecrement");
+}
+
+void EmitStorageAtomicAnd32(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
+                            const IR::Value& offset, std::string_view value) {
+    ctx.AddU32("{}=atomicAnd({}_ssbo{}[{}>>2],{});", inst, ctx.stage_name, binding.U32(),
+               ctx.var_alloc.Consume(offset), value);
+}
+
+void EmitStorageAtomicOr32(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
+                           const IR::Value& offset, std::string_view value) {
+    ctx.AddU32("{}=atomicOr({}_ssbo{}[{}>>2],{});", inst, ctx.stage_name, binding.U32(),
+               ctx.var_alloc.Consume(offset), value);
+}
+
+void EmitStorageAtomicXor32(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
+                            const IR::Value& offset, std::string_view value) {
+    ctx.AddU32("{}=atomicXor({}_ssbo{}[{}>>2],{});", inst, ctx.stage_name, binding.U32(),
+               ctx.var_alloc.Consume(offset), value);
+}
+
+void EmitStorageAtomicExchange32(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
+                                 const IR::Value& offset, std::string_view value) {
+    ctx.AddU32("{}=atomicExchange({}_ssbo{}[{}>>2],{});", inst, ctx.stage_name, binding.U32(),
+               ctx.var_alloc.Consume(offset), value);
+}
+
+void EmitStorageAtomicIAdd64(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
+                             const IR::Value& offset, std::string_view value) {
+    LOG_WARNING(Shader_GLSL, "Int64 atomics not supported, fallback to non-atomic");
+    ctx.AddU64("{}=packUint2x32(uvec2({}_ssbo{}[{}>>2],{}_ssbo{}[({}>>2)+1]));", inst,
+               ctx.stage_name, binding.U32(), ctx.var_alloc.Consume(offset), ctx.stage_name,
+               binding.U32(), ctx.var_alloc.Consume(offset));
+    ctx.Add("{}_ssbo{}[{}>>2]+=unpackUint2x32({}).x;{}_ssbo{}[({}>>2)+1]+=unpackUint2x32({}).y;",
+            ctx.stage_name, binding.U32(), ctx.var_alloc.Consume(offset), value, ctx.stage_name,
+            binding.U32(), ctx.var_alloc.Consume(offset), value);
+}
+
+void EmitStorageAtomicSMin64(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
+                             const IR::Value& offset, std::string_view value) {
+    LOG_WARNING(Shader_GLSL, "Int64 atomics not supported, fallback to non-atomic");
+    ctx.AddU64("{}=packInt2x32(ivec2({}_ssbo{}[{}>>2],{}_ssbo{}[({}>>2)+1]));", inst,
+               ctx.stage_name, binding.U32(), ctx.var_alloc.Consume(offset), ctx.stage_name,
+               binding.U32(), ctx.var_alloc.Consume(offset));
+    ctx.Add("for(int i=0;i<2;++i){{ "
+            "{}_ssbo{}[({}>>2)+i]=uint(min(int({}_ssbo{}[({}>>2)+i]),unpackInt2x32(int64_t({}))[i])"
+            ");}}",
+            ctx.stage_name, binding.U32(), ctx.var_alloc.Consume(offset), ctx.stage_name,
+            binding.U32(), ctx.var_alloc.Consume(offset), value);
+}
+
+void EmitStorageAtomicUMin64(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
+                             const IR::Value& offset, std::string_view value) {
+    LOG_WARNING(Shader_GLSL, "Int64 atomics not supported, fallback to non-atomic");
+    ctx.AddU64("{}=packUint2x32(uvec2({}_ssbo{}[{}>>2],{}_ssbo{}[({}>>2)+1]));", inst,
+               ctx.stage_name, binding.U32(), ctx.var_alloc.Consume(offset), ctx.stage_name,
+               binding.U32(), ctx.var_alloc.Consume(offset));
+    ctx.Add("for(int i=0;i<2;++i){{ "
+            "{}_ssbo{}[({}>>2)+i]=min({}_ssbo{}[({}>>2)+i],unpackUint2x32(uint64_t({}))[i]);}}",
+            ctx.stage_name, binding.U32(), ctx.var_alloc.Consume(offset), ctx.stage_name,
+            binding.U32(), ctx.var_alloc.Consume(offset), value);
+}
+
+void EmitStorageAtomicSMax64(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
+                             const IR::Value& offset, std::string_view value) {
+    LOG_WARNING(Shader_GLSL, "Int64 atomics not supported, fallback to non-atomic");
+    ctx.AddU64("{}=packInt2x32(ivec2({}_ssbo{}[{}>>2],{}_ssbo{}[({}>>2)+1]));", inst,
+               ctx.stage_name, binding.U32(), ctx.var_alloc.Consume(offset), ctx.stage_name,
+               binding.U32(), ctx.var_alloc.Consume(offset));
+    ctx.Add("for(int i=0;i<2;++i){{ "
+            "{}_ssbo{}[({}>>2)+i]=uint(max(int({}_ssbo{}[({}>>2)+i]),unpackInt2x32(int64_t({}))[i])"
+            ");}}",
+            ctx.stage_name, binding.U32(), ctx.var_alloc.Consume(offset), ctx.stage_name,
+            binding.U32(), ctx.var_alloc.Consume(offset), value);
+}
+
+void EmitStorageAtomicUMax64(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
+                             const IR::Value& offset, std::string_view value) {
+    LOG_WARNING(Shader_GLSL, "Int64 atomics not supported, fallback to non-atomic");
+    ctx.AddU64("{}=packUint2x32(uvec2({}_ssbo{}[{}>>2],{}_ssbo{}[({}>>2)+1]));", inst,
+               ctx.stage_name, binding.U32(), ctx.var_alloc.Consume(offset), ctx.stage_name,
+               binding.U32(), ctx.var_alloc.Consume(offset));
+    ctx.Add("for(int "
+            "i=0;i<2;++i){{{}_ssbo{}[({}>>2)+i]=max({}_ssbo{}[({}>>2)+i],unpackUint2x32(uint64_t({}"
+            "))[i]);}}",
+            ctx.stage_name, binding.U32(), ctx.var_alloc.Consume(offset), ctx.stage_name,
+            binding.U32(), ctx.var_alloc.Consume(offset), value);
+}
+
+void EmitStorageAtomicAnd64(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
+                            const IR::Value& offset, std::string_view value) {
+    ctx.AddU64(
+        "{}=packUint2x32(uvec2(atomicAnd({}_ssbo{}[{}>>2],unpackUint2x32({}).x),atomicAnd({}_"
+        "ssbo{}[({}>>2)+1],unpackUint2x32({}).y)));",
+        inst, ctx.stage_name, binding.U32(), ctx.var_alloc.Consume(offset), value, ctx.stage_name,
+        binding.U32(), ctx.var_alloc.Consume(offset), value);
+}
+
+void EmitStorageAtomicOr64(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
+                           const IR::Value& offset, std::string_view value) {
+    ctx.AddU64("{}=packUint2x32(uvec2(atomicOr({}_ssbo{}[{}>>2],unpackUint2x32({}).x),atomicOr({}_"
+               "ssbo{}[({}>>2)+1],unpackUint2x32({}).y)));",
+               inst, ctx.stage_name, binding.U32(), ctx.var_alloc.Consume(offset), value,
+               ctx.stage_name, binding.U32(), ctx.var_alloc.Consume(offset), value);
+}
+
+void EmitStorageAtomicXor64(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
+                            const IR::Value& offset, std::string_view value) {
+    ctx.AddU64(
+        "{}=packUint2x32(uvec2(atomicXor({}_ssbo{}[{}>>2],unpackUint2x32({}).x),atomicXor({}_"
+        "ssbo{}[({}>>2)+1],unpackUint2x32({}).y)));",
+        inst, ctx.stage_name, binding.U32(), ctx.var_alloc.Consume(offset), value, ctx.stage_name,
+        binding.U32(), ctx.var_alloc.Consume(offset), value);
+}
+
+void EmitStorageAtomicExchange64(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
+                                 const IR::Value& offset, std::string_view value) {
+    ctx.AddU64("{}=packUint2x32(uvec2(atomicExchange({}_ssbo{}[{}>>2],unpackUint2x32({}).x),"
+               "atomicExchange({}_ssbo{}[({}>>2)+1],unpackUint2x32({}).y)));",
+               inst, ctx.stage_name, binding.U32(), ctx.var_alloc.Consume(offset), value,
+               ctx.stage_name, binding.U32(), ctx.var_alloc.Consume(offset), value);
+}
+
+void EmitStorageAtomicAddF32(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
+                             const IR::Value& offset, std::string_view value) {
+    SsboCasFunctionF32(ctx, inst, binding, offset, value, "CasFloatAdd");
+}
+
+void EmitStorageAtomicAddF16x2(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
+                               const IR::Value& offset, std::string_view value) {
+    SsboCasFunction(ctx, inst, binding, offset, value, "CasFloatAdd16x2");
+}
+
+void EmitStorageAtomicAddF32x2(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
+                               const IR::Value& offset, std::string_view value) {
+    SsboCasFunction(ctx, inst, binding, offset, value, "CasFloatAdd32x2");
+}
+
+void EmitStorageAtomicMinF16x2(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
+                               const IR::Value& offset, std::string_view value) {
+    SsboCasFunction(ctx, inst, binding, offset, value, "CasFloatMin16x2");
+}
+
+void EmitStorageAtomicMinF32x2(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
+                               const IR::Value& offset, std::string_view value) {
+    SsboCasFunction(ctx, inst, binding, offset, value, "CasFloatMin32x2");
+}
+
+void EmitStorageAtomicMaxF16x2(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
+                               const IR::Value& offset, std::string_view value) {
+    SsboCasFunction(ctx, inst, binding, offset, value, "CasFloatMax16x2");
+}
+
+void EmitStorageAtomicMaxF32x2(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
+                               const IR::Value& offset, std::string_view value) {
+    SsboCasFunction(ctx, inst, binding, offset, value, "CasFloatMax32x2");
+}
+
+void EmitGlobalAtomicIAdd32(EmitContext&) {
+    throw NotImplementedException("GLSL Instrucion");
+}
+
+void EmitGlobalAtomicSMin32(EmitContext&) {
+    throw NotImplementedException("GLSL Instrucion");
+}
+
+void EmitGlobalAtomicUMin32(EmitContext&) {
+    throw NotImplementedException("GLSL Instrucion");
+}
+
+void EmitGlobalAtomicSMax32(EmitContext&) {
+    throw NotImplementedException("GLSL Instrucion");
+}
+
+void EmitGlobalAtomicUMax32(EmitContext&) {
+    throw NotImplementedException("GLSL Instrucion");
+}
+
+void EmitGlobalAtomicInc32(EmitContext&) {
+    throw NotImplementedException("GLSL Instrucion");
+}
+
+void EmitGlobalAtomicDec32(EmitContext&) {
+    throw NotImplementedException("GLSL Instrucion");
+}
+
+void EmitGlobalAtomicAnd32(EmitContext&) {
+    throw NotImplementedException("GLSL Instrucion");
+}
+
+void EmitGlobalAtomicOr32(EmitContext&) {
+    throw NotImplementedException("GLSL Instrucion");
+}
+
+void EmitGlobalAtomicXor32(EmitContext&) {
+    throw NotImplementedException("GLSL Instrucion");
+}
+
+void EmitGlobalAtomicExchange32(EmitContext&) {
+    throw NotImplementedException("GLSL Instrucion");
+}
+
+void EmitGlobalAtomicIAdd64(EmitContext&) {
+    throw NotImplementedException("GLSL Instrucion");
+}
+
+void EmitGlobalAtomicSMin64(EmitContext&) {
+    throw NotImplementedException("GLSL Instrucion");
+}
+
+void EmitGlobalAtomicUMin64(EmitContext&) {
+    throw NotImplementedException("GLSL Instrucion");
+}
+
+void EmitGlobalAtomicSMax64(EmitContext&) {
+    throw NotImplementedException("GLSL Instrucion");
+}
+
+void EmitGlobalAtomicUMax64(EmitContext&) {
+    throw NotImplementedException("GLSL Instrucion");
+}
+
+void EmitGlobalAtomicInc64(EmitContext&) {
+    throw NotImplementedException("GLSL Instrucion");
+}
+
+void EmitGlobalAtomicDec64(EmitContext&) {
+    throw NotImplementedException("GLSL Instrucion");
+}
+
+void EmitGlobalAtomicAnd64(EmitContext&) {
+    throw NotImplementedException("GLSL Instrucion");
+}
+
+void EmitGlobalAtomicOr64(EmitContext&) {
+    throw NotImplementedException("GLSL Instrucion");
+}
+
+void EmitGlobalAtomicXor64(EmitContext&) {
+    throw NotImplementedException("GLSL Instrucion");
+}
+
+void EmitGlobalAtomicExchange64(EmitContext&) {
+    throw NotImplementedException("GLSL Instrucion");
+}
+
+void EmitGlobalAtomicAddF32(EmitContext&) {
+    throw NotImplementedException("GLSL Instrucion");
+}
+
+void EmitGlobalAtomicAddF16x2(EmitContext&) {
+    throw NotImplementedException("GLSL Instrucion");
+}
+
+void EmitGlobalAtomicAddF32x2(EmitContext&) {
+    throw NotImplementedException("GLSL Instrucion");
+}
+
+void EmitGlobalAtomicMinF16x2(EmitContext&) {
+    throw NotImplementedException("GLSL Instrucion");
+}
+
+void EmitGlobalAtomicMinF32x2(EmitContext&) {
+    throw NotImplementedException("GLSL Instrucion");
+}
+
+void EmitGlobalAtomicMaxF16x2(EmitContext&) {
+    throw NotImplementedException("GLSL Instrucion");
+}
+
+void EmitGlobalAtomicMaxF32x2(EmitContext&) {
+    throw NotImplementedException("GLSL Instrucion");
+}
+} // namespace Shader::Backend::GLSL