void RowInterleaved3D::Present() const
{
FGLPostProcessState savedState;
savedState.SaveTextureBindings(2);
prepareInterleavedPresent(*GLRenderer->mPresent3dRowShader);
// Compute absolute offset from top of screen to top of current display window
// because we need screen-relative, not window-relative, scan line parity
int windowVOffset = 0;
#ifdef _WIN32
if (! fullscreen) {
I_SaveWindowedPos(); // update win_y CVAR
windowVOffset = (win_y + WINDOW_BORDER_VERTICAL_PARITY) % 2;
}
#endif // _WIN32
GLRenderer->mPresent3dRowShader->WindowPositionParity.Set(
(windowVOffset
+ GLRenderer->mOutputLetterbox.height + 1 // +1 because of origin at bottom
) % 2
);
GLRenderer->RenderScreenQuad();
}
void CheckerInterleaved3D::Present() const
{
FGLPostProcessState savedState;
savedState.SaveTextureBindings(2);
prepareInterleavedPresent(*GLRenderer->mPresent3dCheckerShader);
// Compute absolute offset from top of screen to top of current display window
// because we need screen-relative, not window-relative, scan line parity
int windowVOffset = 0;
int windowHOffset = 0;
#ifdef _WIN32
if (!fullscreen) {
I_SaveWindowedPos(); // update win_y CVAR
windowHOffset = (win_x + WINDOW_BORDER_HORIZONTAL_PARITY) % 2;
windowVOffset = (win_y + WINDOW_BORDER_VERTICAL_PARITY) % 2;
}
#endif // _WIN32
GLRenderer->mPresent3dCheckerShader->Uniforms->WindowPositionParity =
(windowVOffset
+ windowHOffset
+ screen->mOutputLetterbox.height + 1 // +1 because of origin at bottom
) % 2; // because we want the top pixel offset, but gl_FragCoord.y is the bottom pixel offset
GLRenderer->mPresent3dCheckerShader->Uniforms.Set();
GLRenderer->RenderScreenQuad();
}
void ColumnInterleaved3D::Present() const
{
FGLPostProcessState savedState;
savedState.SaveTextureBindings(2);
prepareInterleavedPresent(*GLRenderer->mPresent3dColumnShader);
// Compute absolute offset from top of screen to top of current display window
// because we need screen-relative, not window-relative, scan line parity
int windowHOffset = 0;
#ifdef _WIN32
if (!fullscreen) {
I_SaveWindowedPos(); // update win_y CVAR
windowHOffset = (win_x + WINDOW_BORDER_HORIZONTAL_PARITY) % 2;
}
#endif // _WIN32
GLRenderer->mPresent3dColumnShader->WindowPositionParity.Set(windowHOffset);
GLRenderer->RenderScreenQuad();
}