From 9170200a11715d131645d1ffb92e86e6ef0d7e88 Mon Sep 17 00:00:00 2001
From: ReinUsesLisp <reinuseslisp@airmail.cc>
Date: Thu, 11 Feb 2021 16:39:06 -0300
Subject: shader: Initial implementation of an AST
---
src/shader_recompiler/backend/spirv/emit_spirv.cpp | 45 +++++++++++++++++++++-
1 file changed, 43 insertions(+), 2 deletions(-)
(limited to 'src/shader_recompiler/backend/spirv/emit_spirv.cpp')
diff --git a/src/shader_recompiler/backend/spirv/emit_spirv.cpp b/src/shader_recompiler/backend/spirv/emit_spirv.cpp
index 7c4269fad4..5022b51597 100644
--- a/src/shader_recompiler/backend/spirv/emit_spirv.cpp
+++ b/src/shader_recompiler/backend/spirv/emit_spirv.cpp
@@ -105,8 +105,26 @@ void EmitSPIRV::EmitInst(EmitContext& ctx, IR::Inst* inst) {
throw LogicError("Invalid opcode {}", inst->Opcode());
}
-void EmitSPIRV::EmitPhi(EmitContext&) {
- throw NotImplementedException("SPIR-V Instruction");
+static Id TypeId(const EmitContext& ctx, IR::Type type) {
+ switch (type) {
+ case IR::Type::U1:
+ return ctx.u1;
+ default:
+ throw NotImplementedException("Phi node type {}", type);
+ }
+}
+
+Id EmitSPIRV::EmitPhi(EmitContext& ctx, IR::Inst* inst) {
+ const size_t num_args{inst->NumArgs()};
+ boost::container::small_vector<Id, 64> operands;
+ operands.reserve(num_args * 2);
+ for (size_t index = 0; index < num_args; ++index) {
+ IR::Block* const phi_block{inst->PhiBlock(index)};
+ operands.push_back(ctx.Def(inst->Arg(index)));
+ operands.push_back(ctx.BlockLabel(phi_block));
+ }
+ const Id result_type{TypeId(ctx, inst->Arg(0).Type())};
+ return ctx.OpPhi(result_type, std::span(operands.data(), operands.size()));
}
void EmitSPIRV::EmitVoid(EmitContext&) {}
@@ -115,6 +133,29 @@ void EmitSPIRV::EmitIdentity(EmitContext&) {
throw NotImplementedException("SPIR-V Instruction");
}
+// FIXME: Move to its own file
+void EmitSPIRV::EmitBranch(EmitContext& ctx, IR::Inst* inst) {
+ ctx.OpBranch(ctx.BlockLabel(inst->Arg(0).Label()));
+}
+
+void EmitSPIRV::EmitBranchConditional(EmitContext& ctx, IR::Inst* inst) {
+ ctx.OpBranchConditional(ctx.Def(inst->Arg(0)), ctx.BlockLabel(inst->Arg(1).Label()),
+ ctx.BlockLabel(inst->Arg(2).Label()));
+}
+
+void EmitSPIRV::EmitLoopMerge(EmitContext& ctx, IR::Inst* inst) {
+ ctx.OpLoopMerge(ctx.BlockLabel(inst->Arg(0).Label()), ctx.BlockLabel(inst->Arg(1).Label()),
+ spv::LoopControlMask::MaskNone);
+}
+
+void EmitSPIRV::EmitSelectionMerge(EmitContext& ctx, IR::Inst* inst) {
+ ctx.OpSelectionMerge(ctx.BlockLabel(inst->Arg(0).Label()), spv::SelectionControlMask::MaskNone);
+}
+
+void EmitSPIRV::EmitReturn(EmitContext& ctx) {
+ ctx.OpReturn();
+}
+
void EmitSPIRV::EmitGetZeroFromOp(EmitContext&) {
throw LogicError("Unreachable instruction");
}
--
cgit v1.2.3-70-g09d2