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-rw-r--r--src/video_core/renderer_opengl/gl_rasterizer.cpp9
1 files changed, 8 insertions, 1 deletions
diff --git a/src/video_core/renderer_opengl/gl_rasterizer.cpp b/src/video_core/renderer_opengl/gl_rasterizer.cpp
index 7ab7f0c0a..8ef79753f 100644
--- a/src/video_core/renderer_opengl/gl_rasterizer.cpp
+++ b/src/video_core/renderer_opengl/gl_rasterizer.cpp
@@ -559,12 +559,19 @@ 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);
+ 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;