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GPU: Fix incorrect PAR with overscan cropping

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Stenzek 2025-02-02 16:07:06 +10:00
parent a5940b2e21
commit 0c3d55a1a1
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1 changed files with 40 additions and 13 deletions
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37
src/core/gpu.cpp
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@ -695,13 +695,16 @@ float GPU::ComputeAspectRatioCorrection() const
const CRTCState& cs = m_crtc_state;
float relative_width = static_cast<float>(cs.horizontal_visible_end - cs.horizontal_visible_start);
float relative_height = static_cast<float>(cs.vertical_visible_end - cs.vertical_visible_start);
if (relative_width <= 0 || relative_height <= 0 || g_settings.display_aspect_ratio == DisplayAspectRatio::PAR1_1 ||
g_settings.display_crop_mode == DisplayCropMode::OverscanUncorrected ||
g_settings.display_crop_mode == DisplayCropMode::BordersUncorrected)
{
if (relative_width <= 0 || relative_height <= 0 || g_settings.display_aspect_ratio == DisplayAspectRatio::PAR1_1)
return 1.0f;
}
// Apply aspect ratio correction for all borders, or overscan with altered display range.
// That way if cropping is performed, the original aspect ratio is maintained.
switch (g_settings.display_crop_mode)
{
case DisplayCropMode::Borders:
case DisplayCropMode::None:
{
if (m_GPUSTAT.pal_mode)
{
relative_width /= static_cast<float>(PAL_HORIZONTAL_ACTIVE_END - PAL_HORIZONTAL_ACTIVE_START);
@ -712,6 +715,30 @@ float GPU::ComputeAspectRatioCorrection() const
relative_width /= static_cast<float>(NTSC_HORIZONTAL_ACTIVE_END - NTSC_HORIZONTAL_ACTIVE_START);
relative_height /= static_cast<float>(NTSC_VERTICAL_ACTIVE_END - NTSC_VERTICAL_ACTIVE_START);
}
}
break;
case DisplayCropMode::Overscan:
{
if (m_GPUSTAT.pal_mode)
{
relative_width /= static_cast<float>(PAL_OVERSCAN_HORIZONTAL_ACTIVE_END - PAL_OVERSCAN_HORIZONTAL_ACTIVE_START);
relative_height /= static_cast<float>(PAL_OVERSCAN_VERTICAL_ACTIVE_END - PAL_OVERSCAN_VERTICAL_ACTIVE_START);
}
else
{
relative_width /=
static_cast<float>(NTSC_OVERSCAN_HORIZONTAL_ACTIVE_END - NTSC_OVERSCAN_HORIZONTAL_ACTIVE_START);
relative_height /= static_cast<float>(NTSC_OVERSCAN_VERTICAL_ACTIVE_END - NTSC_OVERSCAN_VERTICAL_ACTIVE_START);
}
}
break;
case DisplayCropMode::OverscanUncorrected:
case DisplayCropMode::BordersUncorrected:
default:
return 1.0f;
}
return (relative_width / relative_height);
}