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Started decompiling viewport_paint

This commit is contained in:
Duncan Frost 2014-07-19 12:41:38 +01:00
parent e3b7adfa04
commit e63c169664
1 changed files with 42 additions and 0 deletions
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42
src/viewport.c
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@ -264,6 +264,48 @@ void viewport_render(rct_drawpixelinfo *dpi, rct_viewport *viewport, int left, i
* ebp: bottom
*/
void viewport_paint(rct_viewport* viewport, rct_drawpixelinfo* dpi, int left, int top, int right, int bottom){
RCT2_GLOBAL(0x141E9E4, uint16) = viewport->flags;
RCT2_GLOBAL(0x9AC126, uint16) = viewport->zoom;//cx
//dx
int x = right - left;
//bp
int y = bottom - top;
int bitmask = 0xFFFF << viewport->zoom;
x &= bitmask;
y &= bitmask;
left &= bitmask;
top &= bitmask;
RCT2_GLOBAL(0x9AC11C, uint16) = left;
RCT2_GLOBAL(0x9AC11E, uint16) = top;
left -= viewport->view_x & bitmask;
top -= viewport->view_y & bitmask;
RCT2_GLOBAL(0x9AC120, uint16) = x;
RCT2_GLOBAL(0x9AC122, uint16) = y;
left >>= viewport->zoom;
top >>= viewport->zoom;
x >>= viewport->zoom;
x = (viewport->view_x + viewport->view_width) - x;
RCT2_GLOBAL(0x9AC124, uint16) = x;
left += viewport->x;
top += viewport->y;
uint8* bits_pointer = left - dpi->x + (top - dpi->y)*(dpi->width + dpi->pitch) + dpi->bits;
RCT2_GLOBAL(0x9AC118, uint8*) = bits_pointer;
rct_drawpixelinfo* dpi2 = RCT2_ADDRESS(0x9AC128, rct_drawpixelinfo);
dpi2->y = RCT2_GLOBAL(0x9AC11E, uint16);
dpi2->height = RCT2_GLOBAL(0x9AC122, uint16);
dpi2->zoom_level = RCT2_GLOBAL(0x9AC126, uint16);
int ecx = RCT2_GLOBAL(0x9AC11C, uint16) & 0xFFFFFFE0;
RCT2_CALLPROC_X(0x00685CBF, left, top, 0, right, (int)viewport, (int)dpi, bottom);
}