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GPU: Prevent emulator locking up when switching between PAL/NTSC mode

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This commit is contained in:
Connor McLaughlin 2020-03-20 01:12:41 +10:00
parent bad5b30a61
commit d67bcd654c
2 changed files with 13 additions and 5 deletions
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12
src/core/gpu.cpp
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@ -321,13 +321,17 @@ void GPU::UpdateCRTCConfig()
if (m_GPUSTAT.pal_mode) if (m_GPUSTAT.pal_mode)
{ {
cs.vertical_total = 314; cs.vertical_total = PAL_TOTAL_LINES;
cs.horizontal_total = 3406; cs.current_scanline %= PAL_TOTAL_LINES;
cs.horizontal_total = PAL_TICKS_PER_LINE;
cs.current_tick_in_scanline %= PAL_TICKS_PER_LINE;
} }
else else
{ {
cs.vertical_total = 263; cs.vertical_total = NTSC_TOTAL_LINES;
cs.horizontal_total = 3413; cs.current_scanline %= NTSC_TOTAL_LINES;
cs.horizontal_total = NTSC_TICKS_PER_LINE;
cs.current_tick_in_scanline %= NTSC_TICKS_PER_LINE;
} }
const TickCount ticks_per_frame = cs.horizontal_total * cs.vertical_total; const TickCount ticks_per_frame = cs.horizontal_total * cs.vertical_total;

6
src/core/gpu.h
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@ -94,7 +94,11 @@ public:
MAX_PRIMITIVE_HEIGHT = 512, MAX_PRIMITIVE_HEIGHT = 512,
DOT_TIMER_INDEX = 0, DOT_TIMER_INDEX = 0,
HBLANK_TIMER_INDEX = 1, HBLANK_TIMER_INDEX = 1,
MAX_RESOLUTION_SCALE = 16 MAX_RESOLUTION_SCALE = 16,
NTSC_TICKS_PER_LINE = 3413,
NTSC_TOTAL_LINES = 263,
PAL_TICKS_PER_LINE = 3406,
PAL_TOTAL_LINES = 314,
}; };
// 4x4 dither matrix. // 4x4 dither matrix.