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(MESS) svga_s3: Fixed text rendering when full acceleration is set in win95. (no whatsnew)

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mahlemiut 2012-08-29 01:23:11 +00:00
parent ffd410e288
commit 48e8c74bd0
1 changed files with 42 additions and 30 deletions
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72
src/emu/video/pc_vga.c
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@ -3005,10 +3005,10 @@ WRITE16_HANDLER(s3_cmd_w)
{
if(s3.enable_8514 != 0)
{
int x,y,count;
int x,y;
int dir_x;
// int pattern_x,pattern_y;
UINT32 offset,src;
UINT8* buffer; // for bitblt operations
s3.current_cmd = data;
switch(data & 0xe000)
@ -3064,53 +3064,64 @@ WRITE16_HANDLER(s3_cmd_w)
offset += s3.dest_x;
src = VGA_START_ADDRESS;
src += (VGA_LINE_LENGTH * s3.curr_y);
if(s3.curr_x & 0x0800)
src -= s3.curr_x & 0x7ff;
else
src += s3.curr_x;
buffer = (UINT8*)malloc((s3.rect_height+1)*(s3.rect_width+1));
count = 0;
// copy to temporary buffer
src += s3.curr_x;
for(y=0;y<=s3.rect_height;y++)
{
for(x=0;x<=s3.rect_width;x++)
{
if(data & 0x0020)
buffer[count++] = vga.memory[(src+x) % vga.svga_intf.vram_size];
vga.memory[(offset+x) % vga.svga_intf.vram_size] = vga.memory[(src+x) % vga.svga_intf.vram_size];
else
buffer[count++] = vga.memory[(src-x) % vga.svga_intf.vram_size];
vga.memory[(offset-x) % vga.svga_intf.vram_size] = vga.memory[(src-x) % vga.svga_intf.vram_size];
}
if(data & 0x0080)
{
src += VGA_LINE_LENGTH;
else
src -= VGA_LINE_LENGTH;
}
// write from buffer to screen
count = 0;
for(y=0;y<=s3.rect_height;y++)
{
for(x=0;x<=s3.rect_width;x++)
{
if(data & 0x0020)
vga.memory[(offset+x) % vga.svga_intf.vram_size] = buffer[count++];
else
vga.memory[(offset-x) % vga.svga_intf.vram_size] = buffer[count++];
}
if(data & 0x0080)
offset += VGA_LINE_LENGTH;
}
else
{
src -= VGA_LINE_LENGTH;
offset -= VGA_LINE_LENGTH;
}
}
free(buffer);
s3.state = S3_IDLE;
s3.gpbusy = false;
logerror("S3: Command (%04x) - BitBLT from %i,%i to %i,%i Width: %i Height: %i\n",s3.current_cmd,
s3.curr_x,s3.curr_y,s3.dest_x,s3.dest_y,s3.rect_width,s3.rect_height);
break;
case 0xe000: // Pattern Fill
// offset = VGA_START_ADDRESS;
// offset += (VGA_LINE_LENGTH * s3.dest_y);
// offset += s3.dest_x;
// src = VGA_START_ADDRESS;
// src += (VGA_LINE_LENGTH * s3.curr_y);
// src += s3.curr_x;
// pattern_x = pattern_y = 0;
// for(y=0;y<=s3.rect_height;y++)
// {
// for(x=0;x<=s3.rect_width;x++)
// {
// if(data & 0x0020)
// vga.memory[(offset+x) % vga.svga_intf.vram_size] = vga.memory[(src+pattern_x) % vga.svga_intf.vram_size];
// else
// vga.memory[(offset-x) % vga.svga_intf.vram_size] = vga.memory[(src-pattern_x) % vga.svga_intf.vram_size];
// pattern_x++;
// pattern_x %= 8;
// }
// pattern_y++;
// src += VGA_LINE_LENGTH;
// if(pattern_y % 8 == 0)
// src -= (VGA_LINE_LENGTH * 8); // move src pointer back to top of pattern
// if(data & 0x0080)
// offset += VGA_LINE_LENGTH;
// else
// offset -= VGA_LINE_LENGTH;
// }
s3.state = S3_IDLE;
s3.gpbusy = false;
logerror("S3: Command (%04x) - Pattern Fill\n",s3.current_cmd);
logerror("S3: Command (%04x) - Pattern Fill - source %i,%i dest %i,%i Width: %i Height: %i\n",s3.current_cmd,
s3.curr_x,s3.curr_y,s3.dest_x,s3.dest_y,s3.rect_width,s3.rect_height);
break;
default:
s3.state = S3_IDLE;
@ -3337,7 +3348,7 @@ static void s3_wait_draw()
int x,data_size = 0;
UINT32 off,xfer = 0;
// the data in the pixel transfer register masks the rectangle output(?)
// the data in the pixel transfer register or written to VRAM masks the rectangle output
if(s3.bus_size == 0) // 8-bit
data_size = 8;
if(s3.bus_size == 1) // 16-bit
@ -3354,7 +3365,7 @@ static void s3_wait_draw()
// check clipping rectangle
if(s3.wait_rect_x >= s3.scissors_left && s3.wait_rect_x <= s3.scissors_right && s3.wait_rect_y >= s3.scissors_top && s3.wait_rect_y <= s3.scissors_bottom)
{
if(s3.current_cmd & 0x1000)
if((s3.current_cmd & 0x1000) && (data_size != 8))
{
xfer = ((s3.pixel_xfer & 0x000000ff) << 8) | ((s3.pixel_xfer & 0x0000ff00) >> 8)
| ((s3.pixel_xfer & 0x00ff0000) << 8) | ((s3.pixel_xfer & 0xff000000) >> 8);
@ -3378,6 +3389,7 @@ static void s3_wait_draw()
s3.state = S3_IDLE;
s3.gpbusy = false;
}
return;
}
}
}