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modify rdp sync code (#230)

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This commit is contained in:
Logan McNaughton
2025-02-08 21:39:48 +01:00
committed by GitHub
parent 271e4be68c
commit 4c50203ad3
4 changed files with 65 additions and 6 deletions
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parallel-rdp/interface.cpp
+50 -1
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@@ -330,6 +330,45 @@ bool rdp_update_screen()
return emu_running;
}
static uint32_t viCalculateHorizonalWidth(uint32_t hstart, uint32_t xscale, uint32_t width)
{
if (xscale == 0)
return 320;
uint32_t start = ((hstart & 0x03FF0000) >> 16) & 0x3FF;
uint32_t end = (hstart & 0x3FF);
uint32_t delta;
if (end > start)
delta = end - start;
else
delta = start - end;
uint32_t scale = (xscale & 0xFFF);
if (delta == 0)
{
delta = width;
}
return (delta * scale) / 0x400;
}
static uint32_t viCalculateVerticalHeight(uint32_t vstart, uint32_t yscale)
{
if (yscale == 0)
return 240;
uint32_t start = ((vstart & 0x03FF0000) >> 16) & 0x3FF;
uint32_t end = (vstart & 0x3FF);
uint32_t delta;
if (end > start)
delta = end - start;
else
delta = start - end;
uint32_t scale = (yscale & 0xFFF);
return (delta * scale) / 0x800;
}
uint64_t rdp_process_commands()
{
uint64_t interrupt_timer = 0;
@@ -394,7 +433,17 @@ uint64_t rdp_process_commands()
{
processor->wait_for_timeline(processor->signal_timeline());
interrupt_timer = 60000;
uint32_t width = viCalculateHorizonalWidth(*gfx_info.VI_H_START_REG, *gfx_info.VI_X_SCALE_REG, *gfx_info.VI_WIDTH_REG);
if (width == 0)
{
width = 320;
}
uint32_t height = viCalculateVerticalHeight(*gfx_info.VI_V_START_REG, *gfx_info.VI_Y_SCALE_REG);
if (height == 0)
{
height = 240;
}
interrupt_timer = width * height;
}
cmd_cur += cmd_length;