Shader: Implement "invert condition" feature of IFU instruction

If the bit 0 of the JMPU instruction is set, then the jump condition
will be inverted. That is, a jump will happen when the boolean is false
instead of when it is true.

1 files changed, 2 insertions, 1 deletions

diff --git a/src/video_core/shader/shader_interpreter.cpp b/src/video_core/shader/shader_interpreter.cpp
index 7b0c20b74..aeced71b0 100644
--- a/src/video_core/shader/shader_interpreter.cpp
+++ b/src/video_core/shader/shader_interpreter.cpp
@@ -515,7 +515,8 @@ void RunInterpreter(UnitState<Debug>& state) {
 
             case OpCode::Id::JMPU:
                 Record<DebugDataRecord::COND_BOOL_IN>(state.debug, iteration, uniforms.b[instr.flow_control.bool_uniform_id]);
-                if (uniforms.b[instr.flow_control.bool_uniform_id]) {
+
+                if (uniforms.b[instr.flow_control.bool_uniform_id] == !(instr.flow_control.num_instructions & 1)) {
                     state.program_counter = instr.flow_control.dest_offset - 1;
                 }
                 break;