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shader: Move loop safety tests to code emission

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This commit is contained in:
ReinUsesLisp 2021-06-21 01:07:10 -03:00 • committed by ameerj
parent e57f54e582
commit 04c1dca457
16 changed files with 54 additions and 108 deletions
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1
src/shader_recompiler/backend/glasm/emit_context.h
View file

@ -71,6 +71,7 @@ public:
std::string_view stage_name = "invalid";
std::string_view attrib_name = "invalid";
u32 num_safety_loop_vars{};
bool uses_y_direction{};
};

17
src/shader_recompiler/backend/glasm/emit_glasm.cpp
View file

@ -6,6 +6,8 @@
#include <string>
#include <tuple>
#include "common/div_ceil.h"
#include "common/settings.h"
#include "shader_recompiler/backend/bindings.h"
#include "shader_recompiler/backend/glasm/emit_context.h"
#include "shader_recompiler/backend/glasm/emit_glasm.h"
@ -222,6 +224,14 @@ void EmitCode(EmitContext& ctx, const IR::Program& program) {
ctx.Add("REP;");
break;
case IR::AbstractSyntaxNode::Type::Repeat:
if (!Settings::values.disable_shader_loop_safety_checks) {
const u32 loop_index{ctx.num_safety_loop_vars++};
const u32 vector_index{loop_index / 4};
const char component{"xyzw"[loop_index % 4]};
ctx.Add("SUB.S.CC loop{}.{},loop{}.{},1;"
"BRK(LT.{});",
vector_index, component, vector_index, component, component);
}
if (node.data.repeat.cond.IsImmediate()) {
if (node.data.repeat.cond.U1()) {
ctx.Add("ENDREP;");
@ -425,6 +435,10 @@ std::string EmitGLASM(const Profile& profile, const RuntimeInfo& runtime_info, I
if (program.info.uses_fswzadd) {
header += "FSWZA[4],FSWZB[4],";
}
const u32 num_safety_loop_vectors{Common::DivCeil(ctx.num_safety_loop_vars, 4u)};
for (u32 index = 0; index < num_safety_loop_vectors; ++index) {
header += fmt::format("loop{},", index);
}
header += "RC;"
"LONG TEMP ";
for (size_t index = 0; index < ctx.reg_alloc.NumUsedLongRegisters(); ++index) {
@ -441,6 +455,9 @@ std::string EmitGLASM(const Profile& profile, const RuntimeInfo& runtime_info, I
"MOV.F FSWZB[2],1;"
"MOV.F FSWZB[3],-1;";
}
for (u32 index = 0; index < num_safety_loop_vectors; ++index) {
header += fmt::format("MOV.S loop{},{{0x2000,0x2000,0x2000,0x2000}};", index);
}
if (ctx.uses_y_direction) {
header += "PARAM y_direction[1]={state.material.front.ambient};";
}

2
src/shader_recompiler/backend/glasm/emit_glasm_instructions.h
View file

@ -42,8 +42,6 @@ void EmitSetGotoVariable(EmitContext& ctx);
void EmitGetGotoVariable(EmitContext& ctx);
void EmitSetIndirectBranchVariable(EmitContext& ctx);
void EmitGetIndirectBranchVariable(EmitContext& ctx);
void EmitSetLoopSafetyVariable(EmitContext& ctx);
void EmitGetLoopSafetyVariable(EmitContext& ctx);
void EmitGetCbufU8(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding, ScalarU32 offset);
void EmitGetCbufS8(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding, ScalarU32 offset);
void EmitGetCbufU16(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding, ScalarU32 offset);

8
src/shader_recompiler/backend/glasm/emit_glasm_not_implemented.cpp
View file

@ -153,14 +153,6 @@ void EmitGetIndirectBranchVariable(EmitContext& ctx) {
NotImplemented();
}
void EmitSetLoopSafetyVariable(EmitContext& ctx) {
NotImplemented();
}
void EmitGetLoopSafetyVariable(EmitContext& ctx) {
NotImplemented();
}
void EmitGetZFlag(EmitContext& ctx) {
NotImplemented();
}