From cacb934f21d5b2abcbae168f8916bf3e3a21d64b Mon Sep 17 00:00:00 2001
From: ReinUsesLisp <reinuseslisp@airmail.cc>
Date: Fri, 21 Dec 2018 00:07:32 -0300
Subject: [PATCH] shader_decode: Implement EXIT
---
src/video_core/shader/decode/other.cpp | 33 +++++++++++++++++++++++++-
1 file changed, 32 insertions(+), 1 deletion(-)
diff --git a/src/video_core/shader/decode/other.cpp b/src/video_core/shader/decode/other.cpp
index d84702a4f2..2a5b70b8b1 100644
--- a/src/video_core/shader/decode/other.cpp
+++ b/src/video_core/shader/decode/other.cpp
@@ -16,7 +16,38 @@ u32 ShaderIR::DecodeOther(BasicBlock& bb, u32 pc) {
const Instruction instr = {program_code[pc]};
const auto opcode = OpCode::Decode(instr);
- UNIMPLEMENTED();
+ switch (opcode->get().GetId()) {
+ case OpCode::Id::EXIT: {
+ const Tegra::Shader::ConditionCode cc = instr.flow_condition_code;
+ UNIMPLEMENTED_IF_MSG(cc != Tegra::Shader::ConditionCode::T, "EXIT condition code used: {}",
+ static_cast<u32>(cc));
+
+ switch (instr.flow.cond) {
+ case Tegra::Shader::FlowCondition::Always:
+ bb.push_back(Operation(OperationCode::Exit));
+ if (instr.pred.pred_index == static_cast<u64>(Tegra::Shader::Pred::UnusedIndex)) {
+ // If this is an unconditional exit then just end processing here,
+ // otherwise we have to account for the possibility of the condition
+ // not being met, so continue processing the next instruction.
+ pc = MAX_PROGRAM_LENGTH - 1;
+ }
+ break;
+
+ case Tegra::Shader::FlowCondition::Fcsm_Tr:
+ // TODO(bunnei): What is this used for? If we assume this conditon is not
+ // satisifed, dual vertex shaders in Farming Simulator make more sense
+ UNIMPLEMENTED_MSG("Skipping unknown FlowCondition::Fcsm_Tr");
+ break;
+
+ default:
+ UNIMPLEMENTED_MSG("Unhandled flow condition: {}",
+ static_cast<u32>(instr.flow.cond.Value()));
+ }
+ break;
+ }
+ default:
+ UNIMPLEMENTED_MSG("Unhandled instruction: {}", opcode->get().GetName());
+ }
return pc;
}
--
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