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glsl: Refactor Global memory functions

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This commit is contained in:
ameerj
2021-06-03 20:24:56 -04:00
parent a68fabf6d5
commit 5355568a2d
2 changed files with 76 additions and 74 deletions
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149
src/shader_recompiler/backend/glsl/emit_context.cpp
View File

@@ -9,11 +9,11 @@
namespace Shader::Backend::GLSL {
namespace {
u32 CbufIndex(u32 offset) {
u32 CbufIndex(size_t offset) {
return (offset / 4) % 4;
}
char OffsetSwizzle(u32 offset) {
char CbufSwizzle(size_t offset) {
return "xyzw"[CbufIndex(offset)];
}
@@ -434,81 +434,82 @@ void EmitContext::DefineHelperFunctions() {
header += "uint CasMaxS32(uint op_a,uint op_b){return uint(max(int(op_a),int(op_b)));}";
}
if (info.uses_global_memory) {
std::string write_func{"void WriteGlobal32(uint64_t addr,uint data){\n"};
std::string write_func_64{"void WriteGlobal64(uint64_t addr,uvec2 data){\n"};
std::string write_func_128{"void WriteGlobal128(uint64_t addr,uvec4 data){\n"};
std::string load_func{"uint LoadGlobal32(uint64_t addr){\n"};
std::string load_func_64{"uvec2 LoadGlobal64(uint64_t addr){\n"};
std::string load_func_128{"uvec4 LoadGlobal128(uint64_t addr){\n"};
const size_t num_buffers{info.storage_buffers_descriptors.size()};
for (size_t index = 0; index < num_buffers; ++index) {
if (!info.nvn_buffer_used[index]) {
continue;
}
const auto& ssbo{info.storage_buffers_descriptors[index]};
const u32 size_cbuf_offset{ssbo.cbuf_offset + 8};
const auto ssbo_addr{fmt::format("ssbo_addr{}", index)};
const auto cbuf{fmt::format("{}_cbuf{}", stage_name, ssbo.cbuf_index)};
const auto cbuf_value{fmt::format(
"uint64_t {}=packUint2x32(uvec2(ftou({}[{}].{}),ftou({}[{}].{})));", ssbo_addr,
cbuf, ssbo.cbuf_offset / 16, OffsetSwizzle(ssbo.cbuf_offset), cbuf,
(ssbo.cbuf_offset + 4) / 16, OffsetSwizzle(ssbo.cbuf_offset + 4))};
write_func += cbuf_value;
write_func_64 += cbuf_value;
write_func_128 += cbuf_value;
load_func += cbuf_value;
load_func_64 += cbuf_value;
load_func_128 += cbuf_value;
const auto ssbo_size{fmt::format("ftou({}[{}].{}),ftou({}[{}].{})", cbuf,
size_cbuf_offset / 16, OffsetSwizzle(size_cbuf_offset),
cbuf, (size_cbuf_offset + 4) / 16,
OffsetSwizzle(size_cbuf_offset + 4))};
const auto comparison{fmt::format("if((addr>={})&&(addr<({}+\nuint64_t(uvec2({}))))){{",
ssbo_addr, ssbo_addr, ssbo_size)};
write_func += comparison;
write_func_64 += comparison;
write_func_128 += comparison;
load_func += comparison;
load_func_64 += comparison;
load_func_128 += comparison;
const auto ssbo_name{fmt::format("{}_ssbo{}", stage_name, index)};
write_func += fmt::format("{}[uint(addr-{})>>2]=data;return;}}", ssbo_name, ssbo_addr);
write_func_64 +=
fmt::format("{}[uint(addr-{})>>2]=data.x;{}[uint(addr-{}+4)>>2]=data.y;return;}}",
ssbo_name, ssbo_addr, ssbo_name, ssbo_addr);
write_func_128 +=
fmt::format("{}[uint(addr-{})>>2]=data.x;{}[uint(addr-{}+4)>>2]=data.y;{}[uint("
"addr-{}+8)>>2]=data.z;{}[uint(addr-{}+12)>>2]=data.w;return;}}",
ssbo_name, ssbo_addr, ssbo_name, ssbo_addr, ssbo_name, ssbo_addr,
ssbo_name, ssbo_addr);
load_func += fmt::format("return {}[uint(addr-{})>>2];}}", ssbo_name, ssbo_addr);
load_func_64 +=
fmt::format("return uvec2({}[uint(addr-{})>>2],{}[uint(addr-{}+4)>>2]);}}",
ssbo_name, ssbo_addr, ssbo_name, ssbo_addr);
load_func_128 += fmt::format("return "
"uvec4({}[uint(addr-{})>>2],{}[uint(addr-{}+4)>>2],{}["
"uint(addr-{}+8)>>2],{}[uint(addr-{}+12)>>2]);}}",
ssbo_name, ssbo_addr, ssbo_name, ssbo_addr, ssbo_name,
ssbo_addr, ssbo_name, ssbo_addr);
}
write_func += "}\n";
write_func_64 += "}\n";
write_func_128 += "}\n";
load_func += "return 0u;}\n";
load_func_64 += "return uvec2(0);}\n";
load_func_128 += "return uvec4(0);}\n";
header += write_func;
header += write_func_64;
header += write_func_128;
header += load_func;
header += load_func_64;
header += load_func_128;
header += DefineGlobalMemoryFunctions();
}
}
std::string EmitContext::DefineGlobalMemoryFunctions() {
const auto define_body{[&](std::string& func, size_t index, u32 num_components,
std::string_view return_statement) {
const auto& ssbo{info.storage_buffers_descriptors[index]};
const u32 size_cbuf_offset{ssbo.cbuf_offset + 8};
const auto ssbo_addr{fmt::format("ssbo_addr{}", index)};
const auto cbuf{fmt::format("{}_cbuf{}", stage_name, ssbo.cbuf_index)};
std::array<std::string, 2> addr_xy;
std::array<std::string, 2> size_xy;
for (size_t i = 0; i < addr_xy.size(); ++i) {
const auto addr_loc{ssbo.cbuf_offset + 4 * i};
const auto size_loc{size_cbuf_offset + 4 * i};
addr_xy[i] = fmt::format("ftou({}[{}].{})", cbuf, addr_loc / 16, CbufSwizzle(addr_loc));
size_xy[i] = fmt::format("ftou({}[{}].{})", cbuf, size_loc / 16, CbufSwizzle(size_loc));
}
const auto addr_pack{fmt::format("packUint2x32(uvec2({},{}))", addr_xy[0], addr_xy[1])};
const auto addr_statment{fmt::format("uint64_t {}={};", ssbo_addr, addr_pack)};
func += addr_statment;
const auto size_vec{fmt::format("uvec2({},{})", size_xy[0], size_xy[1])};
const auto comp_lhs{fmt::format("(addr>={})", ssbo_addr)};
const auto comp_rhs{fmt::format("(addr<({}+uint64_t({})))", ssbo_addr, size_vec)};
const auto comparison{fmt::format("if({}&&{}){{", comp_lhs, comp_rhs)};
func += comparison;
const auto ssbo_name{fmt::format("{}_ssbo{}", stage_name, index)};
switch (num_components) {
case 1:
func += fmt::format(return_statement, ssbo_name, ssbo_addr);
break;
case 2:
func += fmt::format(return_statement, ssbo_name, ssbo_addr, ssbo_name, ssbo_addr);
break;
case 4:
func += fmt::format(return_statement, ssbo_name, ssbo_addr, ssbo_name, ssbo_addr,
ssbo_name, ssbo_addr, ssbo_name, ssbo_addr);
break;
}
}};
std::string write_func{"void WriteGlobal32(uint64_t addr,uint data){\n"};
std::string write_func_64{"void WriteGlobal64(uint64_t addr,uvec2 data){\n"};
std::string write_func_128{"void WriteGlobal128(uint64_t addr,uvec4 data){\n"};
std::string load_func{"uint LoadGlobal32(uint64_t addr){\n"};
std::string load_func_64{"uvec2 LoadGlobal64(uint64_t addr){\n"};
std::string load_func_128{"uvec4 LoadGlobal128(uint64_t addr){\n"};
const size_t num_buffers{info.storage_buffers_descriptors.size()};
for (size_t index = 0; index < num_buffers; ++index) {
if (!info.nvn_buffer_used[index]) {
continue;
}
define_body(write_func, index, 1, "{}[uint(addr-{})>>2]=data;return;}}");
define_body(write_func_64, index, 2,
"{}[uint(addr-{})>>2]=data.x;{}[uint(addr-{}+4)>>2]=data.y;return;}}");
define_body(write_func_128, index, 4,
"{}[uint(addr-{})>>2]=data.x;{}[uint(addr-{}+4)>>2]=data.y;{}[uint("
"addr-{}+8)>>2]=data.z;{}[uint(addr-{}+12)>>2]=data.w;return;}}");
define_body(load_func, index, 1, "return {}[uint(addr-{})>>2];}}");
define_body(load_func_64, index, 2,
"return uvec2({}[uint(addr-{})>>2],{}[uint(addr-{}+4)>>2]);}}");
define_body(load_func_128, index, 4,
"return uvec4({}[uint(addr-{})>>2],{}[uint(addr-{}+4)>>2],{}["
"uint(addr-{}+8)>>2],{}[uint(addr-{}+12)>>2]);}}");
}
write_func += "}";
write_func_64 += "}";
write_func_128 += "}";
load_func += "return 0u;}";
load_func_64 += "return uvec2(0);}";
load_func_128 += "return uvec4(0);}";
return write_func + write_func_64 + write_func_128 + load_func + load_func_64 + load_func_128;
}
void EmitContext::SetupImages(Bindings& bindings) {
image_buffer_bindings.reserve(info.image_buffer_descriptors.size());
for (const auto& desc : info.image_buffer_descriptors) {

1
src/shader_recompiler/backend/glsl/emit_context.h
View File

@@ -167,6 +167,7 @@ private:
void DefineStorageBuffers(Bindings& bindings);
void DefineGenericOutput(size_t index, u32 invocations);
void DefineHelperFunctions();
std::string DefineGlobalMemoryFunctions();
void SetupImages(Bindings& bindings);
};