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shader_recompiler: add extended LDC to GLASM backend

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Liam 2022-10-02 17:32:54 -04:00
parent 61399de5db
commit ae7062d522
1 changed files with 21 additions and 4 deletions
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23
src/shader_recompiler/backend/glasm/emit_glasm_context_get_set.cpp
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@ -13,9 +13,6 @@ namespace Shader::Backend::GLASM {
namespace { namespace {
void GetCbuf(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding, ScalarU32 offset, void GetCbuf(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding, ScalarU32 offset,
std::string_view size) { std::string_view size) {
if (!binding.IsImmediate()) {
throw NotImplementedException("Indirect constant buffer loading");
}
const Register ret{ctx.reg_alloc.Define(inst)}; const Register ret{ctx.reg_alloc.Define(inst)};
if (offset.type == Type::U32) { if (offset.type == Type::U32) {
// Avoid reading arrays out of bounds, matching hardware's behavior // Avoid reading arrays out of bounds, matching hardware's behavior
@ -24,7 +21,27 @@ void GetCbuf(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding, ScalarU
return; return;
} }
} }
if (binding.IsImmediate()) {
ctx.Add("LDC.{} {},c{}[{}];", size, ret, binding.U32(), offset); ctx.Add("LDC.{} {},c{}[{}];", size, ret, binding.U32(), offset);
return;
}
const ScalarU32 idx{ctx.reg_alloc.Consume(binding)};
for (u32 i = 0; i < Info::MAX_INDIRECT_CBUFS; i++) {
ctx.Add("SEQ.S.CC RC.x,{},{};"
"IF NE.x;"
"LDC.{} {},c{}[{}];",
idx, i, size, ret, i, offset);
if (i != Info::MAX_INDIRECT_CBUFS - 1) {
ctx.Add("ELSE;");
}
}
for (u32 i = 0; i < Info::MAX_INDIRECT_CBUFS; i++) {
ctx.Add("ENDIF;");
}
} }
bool IsInputArray(Stage stage) { bool IsInputArray(Stage stage) {