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authorameerj <52414509+ameerj@users.noreply.github.com>2021-06-04 04:25:06 +0200
committerameerj <52414509+ameerj@users.noreply.github.com>2021-07-23 03:51:37 +0200
commit0a0b0a73d82057a309b6b0427c29c7e15e2b356f (patch)
tree0982ab6ae4b27b69a97cad77beb551e9508d537e /src/shader_recompiler/backend/glsl/emit_glsl_memory.cpp
parentglsl: Cleanup and address feedback (diff)
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Diffstat (limited to 'src/shader_recompiler/backend/glsl/emit_glsl_memory.cpp')
-rw-r--r--src/shader_recompiler/backend/glsl/emit_glsl_memory.cpp32
1 files changed, 20 insertions, 12 deletions
diff --git a/src/shader_recompiler/backend/glsl/emit_glsl_memory.cpp b/src/shader_recompiler/backend/glsl/emit_glsl_memory.cpp
index bc4363824..500e5c290 100644
--- a/src/shader_recompiler/backend/glsl/emit_glsl_memory.cpp
+++ b/src/shader_recompiler/backend/glsl/emit_glsl_memory.cpp
@@ -9,6 +9,18 @@
#include "shader_recompiler/frontend/ir/value.h"
namespace Shader::Backend::GLSL {
+namespace {
+constexpr char cas_loop[]{"for(;;){{uint old_value={};uint "
+ "cas_result=atomicCompSwap({},old_value,bitfieldInsert({},{},{},{}));"
+ "if(cas_result==old_value){{break;}}}}"};
+
+void SsboWriteCas(EmitContext& ctx, const IR::Value& binding, std::string_view offset_var,
+ std::string_view value, std::string_view bit_offset, u32 num_bits) {
+ const auto ssbo{fmt::format("{}_ssbo{}[{}>>2]", ctx.stage_name, binding.U32(), offset_var)};
+ ctx.Add(cas_loop, ssbo, ssbo, ssbo, value, bit_offset, num_bits);
+}
+} // Anonymous namespace
+
void EmitLoadGlobalU8([[maybe_unused]] EmitContext& ctx) {
NotImplemented();
}
@@ -125,9 +137,8 @@ void EmitWriteStorageU8([[maybe_unused]] EmitContext& ctx,
[[maybe_unused]] const IR::Value& offset,
[[maybe_unused]] std::string_view value) {
const auto offset_var{ctx.var_alloc.Consume(offset)};
- ctx.Add("{}_ssbo{}[{}>>2]=bitfieldInsert({}_ssbo{}[{}>>2],{},int({}%4)*8,8);", ctx.stage_name,
- binding.U32(), offset_var, ctx.stage_name, binding.U32(), offset_var, value,
- offset_var);
+ const auto bit_offset{fmt::format("int({}%4)*8", offset_var)};
+ SsboWriteCas(ctx, binding, offset_var, value, bit_offset, 8);
}
void EmitWriteStorageS8([[maybe_unused]] EmitContext& ctx,
@@ -135,9 +146,8 @@ void EmitWriteStorageS8([[maybe_unused]] EmitContext& ctx,
[[maybe_unused]] const IR::Value& offset,
[[maybe_unused]] std::string_view value) {
const auto offset_var{ctx.var_alloc.Consume(offset)};
- ctx.Add("{}_ssbo{}[{}>>2]=bitfieldInsert({}_ssbo{}[{}>>2],{},int({}%4)*8,8);", ctx.stage_name,
- binding.U32(), offset_var, ctx.stage_name, binding.U32(), offset_var, value,
- offset_var);
+ const auto bit_offset{fmt::format("int({}%4)*8", offset_var)};
+ SsboWriteCas(ctx, binding, offset_var, value, bit_offset, 8);
}
void EmitWriteStorageU16([[maybe_unused]] EmitContext& ctx,
@@ -145,9 +155,8 @@ void EmitWriteStorageU16([[maybe_unused]] EmitContext& ctx,
[[maybe_unused]] const IR::Value& offset,
[[maybe_unused]] std::string_view value) {
const auto offset_var{ctx.var_alloc.Consume(offset)};
- ctx.Add("{}_ssbo{}[{}>>2]=bitfieldInsert({}_ssbo{}[{}>>2],{},int(({}>>1)%2)*16,16);",
- ctx.stage_name, binding.U32(), offset_var, ctx.stage_name, binding.U32(), offset_var,
- value, offset_var);
+ const auto bit_offset{fmt::format("int(({}>>1)%2)*16", offset_var)};
+ SsboWriteCas(ctx, binding, offset_var, value, bit_offset, 16);
}
void EmitWriteStorageS16([[maybe_unused]] EmitContext& ctx,
@@ -155,9 +164,8 @@ void EmitWriteStorageS16([[maybe_unused]] EmitContext& ctx,
[[maybe_unused]] const IR::Value& offset,
[[maybe_unused]] std::string_view value) {
const auto offset_var{ctx.var_alloc.Consume(offset)};
- ctx.Add("{}_ssbo{}[{}>>2]=bitfieldInsert({}_ssbo{}[{}>>2],{},int(({}>>1)%2)*16,16);",
- ctx.stage_name, binding.U32(), offset_var, ctx.stage_name, binding.U32(), offset_var,
- value, offset_var);
+ const auto bit_offset{fmt::format("int(({}>>1)%2)*16", offset_var)};
+ SsboWriteCas(ctx, binding, offset_var, value, bit_offset, 16);
}
void EmitWriteStorage32(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset,