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Merge pull request #8149 from liamwhite/front-face
OpenGL: flip front faces if Z scale is inverted
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commit
bf3c6f8812
@ -559,12 +559,19 @@ void RasterizerOpenGL::SyncViewport() {
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const bool dirty_viewport = flags[Dirty::Viewports] || rescale_viewports;
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const bool dirty_clip_control = flags[Dirty::ClipControl];
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if (dirty_clip_control || flags[Dirty::FrontFace]) {
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if (dirty_viewport || dirty_clip_control || flags[Dirty::FrontFace]) {
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flags[Dirty::FrontFace] = false;
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GLenum mode = MaxwellToGL::FrontFace(regs.front_face);
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bool flip_faces = false;
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if (regs.screen_y_control.triangle_rast_flip != 0 &&
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regs.viewport_transform[0].scale_y < 0.0f) {
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flip_faces = !flip_faces;
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}
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if (regs.viewport_transform[0].scale_z < 0.0f) {
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flip_faces = !flip_faces;
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}
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if (flip_faces) {
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switch (mode) {
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case GL_CW:
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mode = GL_CCW;
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