From 3319719f0fb41823341f705e0af6a72b17c33df6 Mon Sep 17 00:00:00 2001
From: Wunkolo <Wunkolo@gmail.com>
Date: Sat, 17 Aug 2024 12:56:45 -0700
Subject: [PATCH] shader_jit_x64: Zero-extend conditional-code bytes

`mov` was doing a partial update of bits within the register, allowing
garbage to be introduced in the upper bits of the register.
---
 src/video_core/shader/shader_jit_x64_compiler.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/video_core/shader/shader_jit_x64_compiler.cpp b/src/video_core/shader/shader_jit_x64_compiler.cpp
index ae80b694f..2dd3720b0 100644
--- a/src/video_core/shader/shader_jit_x64_compiler.cpp
+++ b/src/video_core/shader/shader_jit_x64_compiler.cpp
@@ -1002,8 +1002,8 @@ void JitShader::Compile(const std::array<u32, MAX_PROGRAM_CODE_LENGTH>* program_
     mov(LOOPCOUNT_REG, dword[STATE + offsetof(ShaderUnit, address_registers[2])]);
 
     // Load conditional code
-    mov(COND0, byte[STATE + offsetof(ShaderUnit, conditional_code[0])]);
-    mov(COND1, byte[STATE + offsetof(ShaderUnit, conditional_code[1])]);
+    movzx(COND0, byte[STATE + offsetof(ShaderUnit, conditional_code[0])]);
+    movzx(COND1, byte[STATE + offsetof(ShaderUnit, conditional_code[1])]);
 
     // Used to set a register to one
     static const __m128 one = {1.f, 1.f, 1.f, 1.f};