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Implement color transparency and 16/24-bpp color patterns

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This commit is contained in:
Cacodemon345
2024-02-04 01:23:26 +06:00
parent 0bca52bfe5
commit ac0f7ec9e7
1 changed files with 56 additions and 0 deletions
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56
src/video/vid_c&t_69000.c
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@@ -854,6 +854,43 @@ chips_69000_process_pixel(chips_69000_t* chips, uint32_t pixel)
+ 8 * ((vert_pat_alignment + chips->bitblt_running.y) & 7)
+ (((chips->bitblt_running.bitblt.destination_addr & 7) + chips->bitblt_running.x) & 7), chips);
}
if (chips->bitblt_running.bytes_per_pixel == 2) {
pattern_pixel = chips_69000_readw_linear(chips->bitblt_running.bitblt.pat_addr
+ (2 * 8 * ((vert_pat_alignment + chips->bitblt_running.y) & 7))
+ (2 * (((chips->bitblt_running.bitblt.destination_addr & 7) + chips->bitblt_running.x) & 7)), chips);
}
if (chips->bitblt_running.bytes_per_pixel == 3) {
pattern_pixel = chips_69000_readb_linear(chips->bitblt_running.bitblt.pat_addr
+ (3 * 8 * ((vert_pat_alignment + chips->bitblt_running.y) & 7))
+ (3 * (((chips->bitblt_running.bitblt.destination_addr & 7) + chips->bitblt_running.x) & 7)), chips);
pattern_pixel |= chips_69000_readb_linear(chips->bitblt_running.bitblt.pat_addr
+ (3 * 8 * ((vert_pat_alignment + chips->bitblt_running.y) & 7))
+ (3 * (((chips->bitblt_running.bitblt.destination_addr & 7) + chips->bitblt_running.x) & 7)) + 1, chips) << 8;
pattern_pixel |= chips_69000_readb_linear(chips->bitblt_running.bitblt.pat_addr
+ (3 * 8 * ((vert_pat_alignment + chips->bitblt_running.y) & 7))
+ (3 * (((chips->bitblt_running.bitblt.destination_addr & 7) + chips->bitblt_running.x) & 7)) + 2, chips) << 16;
}
}
if (chips->bitblt_running.bitblt.bitblt_control & (1 << 14)) {
switch ((chips->bitblt_running.bitblt.bitblt_control >> 15) & 3) {
case 1:
case 3:
{
uint32_t color_key = (chips->bitblt_running.bitblt.monochrome_source_expansion_color_reg_select)
? chips->bitblt_running.bitblt.source_key_bg
: chips->bitblt_running.bitblt.pattern_source_key_bg;
color_key &= (1 << (8 * (chips->bitblt_running.bytes_per_pixel))) - 1;
if (!!(color_key == dest_pixel) == !!(chips->bitblt_running.bitblt.bitblt_control & (1 << 16))) {
return;
}
break;
}
}
}
switch (chips->bitblt_running.bytes_per_pixel) {
@@ -874,6 +911,25 @@ chips_69000_process_pixel(chips_69000_t* chips, uint32_t pixel)
}
}
if (chips->bitblt_running.bitblt.bitblt_control & (1 << 14)) {
switch ((chips->bitblt_running.bitblt.bitblt_control >> 15) & 3) {
case 0:
case 2:
{
uint32_t color_key = (chips->bitblt_running.bitblt.monochrome_source_expansion_color_reg_select)
? chips->bitblt_running.bitblt.source_key_bg
: chips->bitblt_running.bitblt.pattern_source_key_bg;
color_key &= (1 << (8 * (chips->bitblt_running.bytes_per_pixel))) - 1;
if (!!(color_key == dest_pixel) == !!(chips->bitblt_running.bitblt.bitblt_control & (1 << 16))) {
return;
}
break;
}
}
}
switch (chips->bitblt_running.bytes_per_pixel) {
case 1: /* 8 bits-per-pixel. */
{