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trident: improved mono pattern drawing, fixing foreground colour, adding background colour, and clipping it.

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This commit is contained in:
mahlemiut 2014-09-22 08:53:44 +00:00
parent 4be91f953e
commit d8f0f977a3
1 changed files with 8 additions and 3 deletions
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11
src/emu/bus/isa/trident.c
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@ -98,7 +98,7 @@ UINT32 trident_vga_device::READPIXEL(INT16 x,INT16 y)
void trident_vga_device::WRITEPIXEL(INT16 x,INT16 y, UINT32 data)
{
if(svga.rgb8_en)
WRITEPIXEL8(x,y,data & 0xff);
WRITEPIXEL8(x,y,(((data >> 16) & 0xff) | ((data >> 8) & 0xff) | (data & 0xff))); // XFree86 3.3 sets bits 0-7 to 0 when using mono patterns, does it OR each byte?
if(svga.rgb15_en)
WRITEPIXEL15(x,y,data & 0x7fff);
if(svga.rgb16_en)
@ -1170,8 +1170,13 @@ void trident_vga_device::accel_data_write(UINT32 data)
{
for(int x=31;x>=0;x--)
{
if(((data >> x) & 0x01) != 0)
WRITEPIXEL(tri.accel_mem_x,tri.accel_mem_y,tri.accel_fgcolour);
if(tri.accel_mem_x <= tri.accel_dest_x+tri.accel_dim_x)
{
if(((data >> x) & 0x01) != 0)
WRITEPIXEL(tri.accel_mem_x,tri.accel_mem_y,tri.accel_fgcolour);
else
WRITEPIXEL(tri.accel_mem_x,tri.accel_mem_y,tri.accel_bgcolour);
}
tri.accel_mem_x++;
}
if(tri.accel_mem_x > tri.accel_dest_x+tri.accel_dim_x)