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Clip Mach64 drawing coordinates to 12-bit - fixes issues with some Win9x drivers.

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This commit is contained in:
TomW 2015-11-18 21:19:46 +00:00
commit 92a53df150
1 changed files with 4 additions and 4 deletions
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8
src/vid_ati_mach64.c
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@ -691,8 +691,8 @@ void mach64_blit(uint32_t cpu_dat, int count, mach64_t *mach64)
uint32_t src_dat, dest_dat; uint32_t src_dat, dest_dat;
uint32_t host_dat; uint32_t host_dat;
int mix; int mix;
int dst_x = mach64->accel.dst_x + mach64->accel.dst_x_start; int dst_x = (mach64->accel.dst_x + mach64->accel.dst_x_start) & 0xfff;
int dst_y = mach64->accel.dst_y + mach64->accel.dst_y_start; int dst_y = (mach64->accel.dst_y + mach64->accel.dst_y_start) & 0xfff;
if (mach64->accel.source_host) if (mach64->accel.source_host)
{ {
@ -741,8 +741,8 @@ void mach64_blit(uint32_t cpu_dat, int count, mach64_t *mach64)
if (dst_x >= mach64->accel.sc_left && dst_x <= mach64->accel.sc_right && if (dst_x >= mach64->accel.sc_left && dst_x <= mach64->accel.sc_right &&
dst_y >= mach64->accel.sc_top && dst_y <= mach64->accel.sc_bottom) dst_y >= mach64->accel.sc_top && dst_y <= mach64->accel.sc_bottom)
{ {
int src_x = mach64->accel.src_x + mach64->accel.src_x_start; int src_x = (mach64->accel.src_x + mach64->accel.src_x_start) & 0xfff;
int src_y = mach64->accel.src_y + mach64->accel.src_y_start; int src_y = (mach64->accel.src_y + mach64->accel.src_y_start) & 0xfff;
switch (mix ? mach64->accel.source_fg : mach64->accel.source_bg) switch (mix ? mach64->accel.source_fg : mach64->accel.source_bg)
{ {