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GPU: Disable display when CRTC configuration is invalid

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This commit is contained in:
Connor McLaughlin
2020-04-27 21:49:34 +10:00
parent 79111e4e03
commit 8c6cb877eb
5 changed files with 27 additions and 16 deletions
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31
src/core/gpu.cpp
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@ -517,19 +517,21 @@ void GPU::UpdateCRTCDisplayParameters()
if (horizontal_display_end <= cs.horizontal_active_end)
{
cs.display_vram_width =
std::max<u16>((((horizontal_display_end - std::max(horizontal_display_start, cs.horizontal_active_start)) +
(cs.dot_clock_divider - 1)) /
cs.dot_clock_divider),
1u);
cs.display_vram_width = std::max<u16>(
(((horizontal_display_end -
std::min(horizontal_display_end, std::max(horizontal_display_start, cs.horizontal_active_start))) +
(cs.dot_clock_divider - 1)) /
cs.dot_clock_divider),
1u);
}
else
{
cs.display_vram_width =
std::max<u16>((((cs.horizontal_active_end - std::max(horizontal_display_start, cs.horizontal_active_start)) +
(cs.dot_clock_divider - 1)) /
cs.dot_clock_divider),
1u);
cs.display_vram_width = std::max<u16>(
(((cs.horizontal_active_end -
std::min(cs.horizontal_active_end, std::max(horizontal_display_start, cs.horizontal_active_start))) +
(cs.dot_clock_divider - 1)) /
cs.dot_clock_divider),
1u);
}
if (vertical_display_start >= cs.vertical_active_start)
@ -545,13 +547,16 @@ void GPU::UpdateCRTCDisplayParameters()
if (vertical_display_end <= cs.vertical_active_end)
{
cs.display_vram_height = (vertical_display_end - std::max(vertical_display_start, cs.vertical_active_start))
cs.display_vram_height = (vertical_display_end - std::min(vertical_display_end, std::max(vertical_display_start,
cs.vertical_active_start)))
<< height_shift;
}
else
{
cs.display_vram_height = (cs.vertical_active_end - std::max(vertical_display_start, cs.vertical_active_start))
<< height_shift;
cs.display_vram_height =
(cs.vertical_active_end -
std::min(vertical_display_end, std::max(vertical_display_start, cs.vertical_active_start)))
<< height_shift;
}
}