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cleanup vi calc functions

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This commit is contained in:
Logan McNaughton
2025-02-08 22:41:28 +01:00
parent 4c50203ad3
commit 37b41c0f66
1 changed files with 4 additions and 15 deletions
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parallel-rdp/interface.cpp
+4 -15
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@@ -332,38 +332,27 @@ bool rdp_update_screen()
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 start = (hstart >> 16) & 0x3FF;
uint32_t end = (hstart & 0x3FF);
uint32_t delta;
if (end > start)
delta = end - start;
else
delta = start - end;
delta = 0;
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 start = (vstart >> 16) & 0x3FF;
uint32_t end = (vstart & 0x3FF);
uint32_t delta;
if (end > start)
delta = end - start;
else
delta = start - end;
delta = 0;
uint32_t scale = (yscale & 0xFFF);
return (delta * scale) / 0x800;