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glsl: WIP var forward declaration

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to fix Loop control flow.
This commit is contained in:
ameerj 2021-05-28 13:54:09 -04:00
parent c797a0c5a5
commit 72974388fb
6 changed files with 60 additions and 49 deletions
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23
src/shader_recompiler/backend/glsl/emit_glsl.cpp
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@ -83,6 +83,7 @@ void Invoke(EmitContext& ctx, IR::Inst* inst) {
}
void EmitInst(EmitContext& ctx, IR::Inst* inst) {
// ctx.Add("/* {} */", inst->GetOpcode());
switch (inst->GetOpcode()) {
#define OPCODE(name, result_type, ...) \
case IR::Opcode::name: \
@ -108,12 +109,9 @@ void PrecolorInst(IR::Inst& phi) {
if (arg.IsImmediate()) {
ir.PhiMove(phi, arg);
} else {
ir.PhiMove(phi, IR::Value{&*arg.InstRecursive()});
ir.PhiMove(phi, IR::Value{arg.InstRecursive()});
}
}
for (size_t i = 0; i < num_args; ++i) {
IR::IREmitter{*phi.PhiBlock(i)}.Reference(IR::Value{&phi});
}
}
void Precolor(const IR::Program& program) {
@ -144,10 +142,7 @@ void EmitCode(EmitContext& ctx, const IR::Program& program) {
ctx.Add("break;");
}
} else {
// TODO: implement this
ctx.Add("MOV.S.CC RC,{};"
"BRK (NE.x);",
0);
ctx.Add("if({}){{break;}}", ctx.reg_alloc.Consume(node.data.break_node.cond));
}
break;
case IR::AbstractSyntaxNode::Type::Return:
@ -155,10 +150,12 @@ void EmitCode(EmitContext& ctx, const IR::Program& program) {
ctx.Add("return;");
break;
case IR::AbstractSyntaxNode::Type::Loop:
ctx.Add("do{{");
ctx.Add("for(;;){{");
break;
case IR::AbstractSyntaxNode::Type::Repeat:
ctx.Add("}}while({});", ctx.reg_alloc.Consume(node.data.repeat.cond));
ctx.Add("if({}){{", ctx.reg_alloc.Consume(node.data.repeat.cond));
ctx.Add("continue;\n}}else{{");
ctx.Add("break;\n}}\n}}");
break;
default:
fmt::print("{}", node.type);
@ -182,7 +179,11 @@ std::string EmitGLSL(const Profile& profile, const RuntimeInfo& runtime_info, IR
Precolor(program);
EmitCode(ctx, program);
const std::string version{fmt::format("#version 450{}\n", GlslVersionSpecifier(ctx))};
ctx.code.insert(0, version);
ctx.header.insert(0, version);
for (size_t index = 0; index < ctx.reg_alloc.num_used_registers; ++index) {
ctx.header += fmt::format("{} R{};", ctx.reg_alloc.reg_types[index], index);
}
ctx.code.insert(0, ctx.header);
ctx.code += "}";
fmt::print("\n{}\n", ctx.code);
return ctx.code;