From a57531854e8eeeab65287083e4cdfe37c4e77bf9 Mon Sep 17 00:00:00 2001
From: Liam <byteslice@airmail.cc>
Date: Mon, 4 Apr 2022 10:30:48 -0400
Subject: [PATCH] OpenGL: propagate face flip condition
---
src/video_core/renderer_opengl/gl_rasterizer.cpp | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/src/video_core/renderer_opengl/gl_rasterizer.cpp b/src/video_core/renderer_opengl/gl_rasterizer.cpp
index 2161391730..5fa2febb4f 100644
--- a/src/video_core/renderer_opengl/gl_rasterizer.cpp
+++ b/src/video_core/renderer_opengl/gl_rasterizer.cpp
@@ -557,13 +557,19 @@ void RasterizerOpenGL::SyncViewport() {
const bool dirty_viewport = flags[Dirty::Viewports] || rescale_viewports;
const bool dirty_clip_control = flags[Dirty::ClipControl];
- if (dirty_clip_control || flags[Dirty::FrontFace]) {
+ if (dirty_viewport || dirty_clip_control || flags[Dirty::FrontFace]) {
flags[Dirty::FrontFace] = false;
GLenum mode = MaxwellToGL::FrontFace(regs.front_face);
- if ((regs.screen_y_control.triangle_rast_flip != 0 &&
- regs.viewport_transform[0].scale_y < 0.0f) ||
- regs.viewport_transform[0].scale_z < 0.0f) {
+ bool flip_faces = false;
+ if (regs.screen_y_control.triangle_rast_flip != 0 &&
+ regs.viewport_transform[0].scale_y < 0.0f) {
+ flip_faces = !flip_faces;
+ }
+ if (regs.viewport_transform[0].scale_z < 0.0f) {
+ flip_faces = !flip_faces;
+ }
+ if (flip_faces) {
switch (mode) {
case GL_CW:
mode = GL_CCW;