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Fixed S3 through the plane PIX_TRANS reads.

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This commit is contained in:
OBattler
2019-10-30 01:27:34 +01:00
parent 2e350558ef
commit 39a635d6e1
1 changed files with 20 additions and 33 deletions
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53
src/video/vid_s3.c
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@@ -8,13 +8,13 @@
*
* S3 emulation.
*
* Version: @(#)vid_s3.c 1.0.26 2019/01/12
* Version: @(#)vid_s3.c 1.0.27 2019/10/30
*
* Authors: Sarah Walker, <http://pcem-emulator.co.uk/>
* Miran Grca, <mgrca8@gmail.com>
*
* Copyright 2008-2018 Sarah Walker.
* Copyright 2016-2018 Miran Grca.
* Copyright 2008-2019 Sarah Walker.
* Copyright 2016-2019 Miran Grca.
*/
#include <stdio.h>
#include <stdint.h>
@@ -2379,23 +2379,6 @@ int s3_data_len(s3_t *s3)
return 4;
}
void s3_data_swap(s3_t *s3)
{
uint8_t i, temp_array[4];
uint8_t c = s3_data_len(s3);
for (i = 0; i < 4; i++)
temp_array[i] = s3->accel.pix_trans[i];
if (s3_data_len(s3) < 2)
return;
if (s3->accel.cmd & 0x1000) {
for (i = 0; i < c; i++)
s3->accel.pix_trans[i] = temp_array[i ^ (c - 1)];
}
}
void s3_accel_start(int count, int cpu_input, uint32_t mix_dat, uint32_t cpu_dat, s3_t *s3)
{
svga_t *svga = &s3->svga;
@@ -2645,7 +2628,17 @@ void s3_accel_start(int count, int cpu_input, uint32_t mix_dat, uint32_t cpu_dat
if (s3->accel.cx >= clip_l && s3->accel.cx <= clip_r &&
s3->accel.cy >= clip_t && s3->accel.cy <= clip_b)
{
switch ((mix_dat & mix_mask) ? frgd_mix : bkgd_mix)
if (s3_cpu_dest(s3) && ((s3->accel.multifunc[0xa] & 0xc0) == 0x00))
mix_dat = mix_mask; /* Mix data = forced to foreground register. */
else if (s3_cpu_dest(s3) && vram_mask) {
/* Mix data = current video memory value. */
READ_SRC(s3->accel.dest + s3->accel.cx, mix_dat);
mix_dat = mix_dat ? mix_mask : 0;
}
if (s3_cpu_dest(s3)) {
READ_SRC(s3->accel.dest + s3->accel.cx, src_dat);
} else switch ((mix_dat & mix_mask) ? frgd_mix : bkgd_mix)
{
case 0: src_dat = s3->accel.bkgd_color; break;
case 1: src_dat = s3->accel.frgd_color; break;
@@ -2657,11 +2650,11 @@ void s3_accel_start(int count, int cpu_input, uint32_t mix_dat, uint32_t cpu_dat
(compare_mode == 3 && src_dat == compare) ||
compare_mode < 2)
{
if (s3_cpu_dest(s3)) {
READ_SRC(s3->accel.dest + s3->accel.cx, src_dat);
if (s3_cpu_dest(s3))
dest_dat = 0xffffffff;
} else
else {
READ_DST(s3->accel.dest + s3->accel.cx, dest_dat);
}
MIX
@@ -2700,28 +2693,22 @@ void s3_accel_start(int count, int cpu_input, uint32_t mix_dat, uint32_t cpu_dat
s3->accel.sy--;
if (cpu_input/* && (s3->accel.multifunc[0xa] & 0xc0) == 0x80*/) {
if (s3_cpu_dest(s3)) {
if (s3_cpu_dest(s3))
s3->data_available = 1;
s3_data_swap(s3);
}
return;
}
if (s3->accel.sy < 0)
{
s3->accel.cur_x = s3->accel.cx;
s3->accel.cur_y = s3->accel.cy;
if (s3_cpu_dest(s3)) {
if (s3_cpu_dest(s3))
s3->data_available = 1;
s3_data_swap(s3);
}
return;
}
}
if (s3_cpu_dest(s3) && s3->data_available) {
s3_data_swap(s3);
if (s3_cpu_dest(s3) && s3->data_available)
return;
}
}
break;