gdi32: Precompute the destination colours for sources with a colour table.

Signed-off-by: Huw Davies <huw@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Huw Davies 2016-07-07 08:44:32 +01:00 committed by Alexandre Julliard
parent f59d3f60e1
commit f7b6a7d77a

View file

@ -1977,15 +1977,19 @@ static void convert_to_8888(dib_info *dst, const dib_info *src, const RECT *src_
{
const RGBQUAD *color_table = get_dib_color_table( src );
BYTE *src_start = get_pixel_ptr_8(src, src_rect->left, src_rect->top), *src_pixel;
DWORD dst_colors[256], i;
for (i = 0; i < sizeof(dst_colors) / sizeof(dst_colors[0]); i++)
dst_colors[i] = color_table[i].rgbRed << 16 | color_table[i].rgbGreen << 8 |
color_table[i].rgbBlue;
for(y = src_rect->top; y < src_rect->bottom; y++)
{
dst_pixel = dst_start;
src_pixel = src_start;
for(x = src_rect->left; x < src_rect->right; x++)
{
RGBQUAD rgb = color_table[*src_pixel++];
*dst_pixel++ = rgb.rgbRed << 16 | rgb.rgbGreen << 8 | rgb.rgbBlue;
}
*dst_pixel++ = dst_colors[*src_pixel++];
if(pad_size) memset(dst_pixel, 0, pad_size);
dst_start += dst->stride / 4;
src_start += src->stride;
@ -1997,18 +2001,22 @@ static void convert_to_8888(dib_info *dst, const dib_info *src, const RECT *src_
{
const RGBQUAD *color_table = get_dib_color_table( src );
BYTE *src_start = get_pixel_ptr_4(src, src_rect->left, src_rect->top), *src_pixel;
DWORD dst_colors[16], i;
for (i = 0; i < sizeof(dst_colors) / sizeof(dst_colors[0]); i++)
dst_colors[i] = color_table[i].rgbRed << 16 | color_table[i].rgbGreen << 8 |
color_table[i].rgbBlue;
for(y = src_rect->top; y < src_rect->bottom; y++)
{
int pos = (src->rect.left + src_rect->left) & 1;
src_pixel = src_start;
for (x = 0; x < src_rect->right - src_rect->left; x++, pos++)
{
RGBQUAD rgb;
if (pos & 1)
rgb = color_table[*src_pixel++ & 0xf];
dst_start[x] = dst_colors[*src_pixel++ & 0xf];
else
rgb = color_table[*src_pixel >> 4];
dst_start[x] = rgb.rgbRed << 16 | rgb.rgbGreen << 8 | rgb.rgbBlue;
dst_start[x] = dst_colors[*src_pixel >> 4];
}
if(pad_size) memset(dst_start + x, 0, pad_size);
dst_start += dst->stride / 4;
@ -2021,15 +2029,19 @@ static void convert_to_8888(dib_info *dst, const dib_info *src, const RECT *src_
{
const RGBQUAD *color_table = get_dib_color_table( src );
BYTE *src_start = get_pixel_ptr_1(src, src_rect->left, src_rect->top);
DWORD dst_colors[2], i;
for (i = 0; i < sizeof(dst_colors) / sizeof(dst_colors[0]); i++)
dst_colors[i] = color_table[i].rgbRed << 16 | color_table[i].rgbGreen << 8 |
color_table[i].rgbBlue;
for(y = src_rect->top; y < src_rect->bottom; y++)
{
int pos = (src->rect.left + src_rect->left) & 7;
for(x = 0; x < src_rect->right - src_rect->left; x++, pos++)
{
RGBQUAD rgb;
src_val = (src_start[pos / 8] & pixel_masks_1[pos % 8]) ? 1 : 0;
rgb = color_table[src_val];
dst_start[x] = rgb.rgbRed << 16 | rgb.rgbGreen << 8 | rgb.rgbBlue;
dst_start[x] = dst_colors[src_val];
}
if(pad_size) memset(dst_start + x, 0, pad_size);
dst_start += dst->stride / 4;
@ -2238,17 +2250,23 @@ static void convert_to_32(dib_info *dst, const dib_info *src, const RECT *src_re
{
const RGBQUAD *color_table = get_dib_color_table( src );
BYTE *src_start = get_pixel_ptr_8(src, src_rect->left, src_rect->top), *src_pixel;
DWORD dst_colors[256], i;
for (i = 0; i < sizeof(dst_colors) / sizeof(dst_colors[0]); i++)
{
RGBQUAD rgb = color_table[i];
dst_colors[i] = put_field(rgb.rgbRed, dst->red_shift, dst->red_len) |
put_field(rgb.rgbGreen, dst->green_shift, dst->green_len) |
put_field(rgb.rgbBlue, dst->blue_shift, dst->blue_len);
}
for(y = src_rect->top; y < src_rect->bottom; y++)
{
dst_pixel = dst_start;
src_pixel = src_start;
for(x = src_rect->left; x < src_rect->right; x++)
{
RGBQUAD rgb = color_table[*src_pixel++];
*dst_pixel++ = put_field(rgb.rgbRed, dst->red_shift, dst->red_len) |
put_field(rgb.rgbGreen, dst->green_shift, dst->green_len) |
put_field(rgb.rgbBlue, dst->blue_shift, dst->blue_len);
}
*dst_pixel++ = dst_colors[*src_pixel++];
if(pad_size) memset(dst_pixel, 0, pad_size);
dst_start += dst->stride / 4;
src_start += src->stride;
@ -2260,20 +2278,26 @@ static void convert_to_32(dib_info *dst, const dib_info *src, const RECT *src_re
{
const RGBQUAD *color_table = get_dib_color_table( src );
BYTE *src_start = get_pixel_ptr_4(src, src_rect->left, src_rect->top), *src_pixel;
DWORD dst_colors[16], i;
for (i = 0; i < sizeof(dst_colors) / sizeof(dst_colors[0]); i++)
{
RGBQUAD rgb = color_table[i];
dst_colors[i] = put_field(rgb.rgbRed, dst->red_shift, dst->red_len) |
put_field(rgb.rgbGreen, dst->green_shift, dst->green_len) |
put_field(rgb.rgbBlue, dst->blue_shift, dst->blue_len);
}
for(y = src_rect->top; y < src_rect->bottom; y++)
{
int pos = (src->rect.left + src_rect->left) & 1;
src_pixel = src_start;
for (x = 0; x < src_rect->right - src_rect->left; x++, pos++)
{
RGBQUAD rgb;
if (pos & 1)
rgb = color_table[*src_pixel++ & 0xf];
dst_start[x] = dst_colors[*src_pixel++ & 0xf];
else
rgb = color_table[*src_pixel >> 4];
dst_start[x] = put_field(rgb.rgbRed, dst->red_shift, dst->red_len) |
put_field(rgb.rgbGreen, dst->green_shift, dst->green_len) |
put_field(rgb.rgbBlue, dst->blue_shift, dst->blue_len);
dst_start[x] = dst_colors[*src_pixel >> 4];
}
if(pad_size) memset(dst_start + x, 0, pad_size);
dst_start += dst->stride / 4;
@ -2286,17 +2310,23 @@ static void convert_to_32(dib_info *dst, const dib_info *src, const RECT *src_re
{
const RGBQUAD *color_table = get_dib_color_table( src );
BYTE *src_start = get_pixel_ptr_1(src, src_rect->left, src_rect->top);
DWORD dst_colors[2], i;
for (i = 0; i < sizeof(dst_colors) / sizeof(dst_colors[0]); i++)
{
RGBQUAD rgb = color_table[i];
dst_colors[i] = put_field(rgb.rgbRed, dst->red_shift, dst->red_len) |
put_field(rgb.rgbGreen, dst->green_shift, dst->green_len) |
put_field(rgb.rgbBlue, dst->blue_shift, dst->blue_len);
}
for(y = src_rect->top; y < src_rect->bottom; y++)
{
int pos = (src->rect.left + src_rect->left) & 7;
for (x = 0; x < src_rect->right - src_rect->left; x++, pos++)
{
RGBQUAD rgb;
src_val = (src_start[pos / 8] & pixel_masks_1[pos % 8]) ? 1 : 0;
rgb = color_table[src_val];
dst_start[x] = put_field(rgb.rgbRed, dst->red_shift, dst->red_len) |
put_field(rgb.rgbGreen, dst->green_shift, dst->green_len) |
put_field(rgb.rgbBlue, dst->blue_shift, dst->blue_len);
dst_start[x] = dst_colors[src_val];
}
if(pad_size) memset(dst_start + x, 0, pad_size);
dst_start += dst->stride / 4;
@ -2725,17 +2755,21 @@ static void convert_to_555(dib_info *dst, const dib_info *src, const RECT *src_r
{
const RGBQUAD *color_table = get_dib_color_table( src );
BYTE *src_start = get_pixel_ptr_8(src, src_rect->left, src_rect->top), *src_pixel;
WORD dst_colors[256];
int i;
for (i = 0; i < sizeof(dst_colors) / sizeof(dst_colors[0]); i++)
dst_colors[i] = ((color_table[i].rgbRed << 7) & 0x7c00) |
((color_table[i].rgbGreen << 2) & 0x03e0) |
((color_table[i].rgbBlue >> 3) & 0x001f);
for(y = src_rect->top; y < src_rect->bottom; y++)
{
dst_pixel = dst_start;
src_pixel = src_start;
for(x = src_rect->left; x < src_rect->right; x++)
{
RGBQUAD rgb = color_table[*src_pixel++];
*dst_pixel++ = ((rgb.rgbRed << 7) & 0x7c00) |
((rgb.rgbGreen << 2) & 0x03e0) |
((rgb.rgbBlue >> 3) & 0x001f);
}
*dst_pixel++ = dst_colors[*src_pixel++];
if(pad_size) memset(dst_pixel, 0, pad_size);
dst_start += dst->stride / 2;
src_start += src->stride;
@ -2747,20 +2781,24 @@ static void convert_to_555(dib_info *dst, const dib_info *src, const RECT *src_r
{
const RGBQUAD *color_table = get_dib_color_table( src );
BYTE *src_start = get_pixel_ptr_4(src, src_rect->left, src_rect->top), *src_pixel;
WORD dst_colors[16];
int i;
for (i = 0; i < sizeof(dst_colors) / sizeof(dst_colors[0]); i++)
dst_colors[i] = ((color_table[i].rgbRed << 7) & 0x7c00) |
((color_table[i].rgbGreen << 2) & 0x03e0) |
((color_table[i].rgbBlue >> 3) & 0x001f);
for(y = src_rect->top; y < src_rect->bottom; y++)
{
int pos = (src->rect.left + src_rect->left) & 1;
src_pixel = src_start;
for (x = 0; x < src_rect->right - src_rect->left; x++, pos++)
{
RGBQUAD rgb;
if (pos & 1)
rgb = color_table[*src_pixel++ & 0xf];
dst_start[x] = dst_colors[*src_pixel++ & 0xf];
else
rgb = color_table[*src_pixel >> 4];
dst_start[x] = ((rgb.rgbRed << 7) & 0x7c00) |
((rgb.rgbGreen << 2) & 0x03e0) |
((rgb.rgbBlue >> 3) & 0x001f);
dst_start[x] = dst_colors[*src_pixel >> 4];
}
if(pad_size) memset(dst_start + x, 0, pad_size);
dst_start += dst->stride / 2;
@ -2773,17 +2811,21 @@ static void convert_to_555(dib_info *dst, const dib_info *src, const RECT *src_r
{
const RGBQUAD *color_table = get_dib_color_table( src );
BYTE *src_start = get_pixel_ptr_1(src, src_rect->left, src_rect->top);
WORD dst_colors[2];
int i;
for (i = 0; i < sizeof(dst_colors) / sizeof(dst_colors[0]); i++)
dst_colors[i] = ((color_table[i].rgbRed << 7) & 0x7c00) |
((color_table[i].rgbGreen << 2) & 0x03e0) |
((color_table[i].rgbBlue >> 3) & 0x001f);
for(y = src_rect->top; y < src_rect->bottom; y++)
{
int pos = (src->rect.left + src_rect->left) & 7;
for (x = 0; x < src_rect->right - src_rect->left; x++, pos++)
{
RGBQUAD rgb;
src_val = (src_start[pos / 8] & pixel_masks_1[pos % 8]) ? 1 : 0;
rgb = color_table[src_val];
dst_start[x] = ((rgb.rgbRed << 7) & 0x7c00) |
((rgb.rgbGreen << 2) & 0x03e0) |
((rgb.rgbBlue >> 3) & 0x001f);
dst_start[x] = dst_colors[src_val];
}
if(pad_size) memset(dst_start + x, 0, pad_size);
dst_start += dst->stride / 2;
@ -2992,17 +3034,24 @@ static void convert_to_16(dib_info *dst, const dib_info *src, const RECT *src_re
{
const RGBQUAD *color_table = get_dib_color_table( src );
BYTE *src_start = get_pixel_ptr_8(src, src_rect->left, src_rect->top), *src_pixel;
WORD dst_colors[256];
int i;
for (i = 0; i < sizeof(dst_colors) / sizeof(dst_colors[0]); i++)
{
RGBQUAD rgb = color_table[i];
dst_colors[i] = put_field(rgb.rgbRed, dst->red_shift, dst->red_len) |
put_field(rgb.rgbGreen, dst->green_shift, dst->green_len) |
put_field(rgb.rgbBlue, dst->blue_shift, dst->blue_len);
}
for(y = src_rect->top; y < src_rect->bottom; y++)
{
dst_pixel = dst_start;
src_pixel = src_start;
for(x = src_rect->left; x < src_rect->right; x++)
{
RGBQUAD rgb = color_table[*src_pixel++];
*dst_pixel++ = put_field(rgb.rgbRed, dst->red_shift, dst->red_len) |
put_field(rgb.rgbGreen, dst->green_shift, dst->green_len) |
put_field(rgb.rgbBlue, dst->blue_shift, dst->blue_len);
}
*dst_pixel++ = dst_colors[*src_pixel++];
if(pad_size) memset(dst_pixel, 0, pad_size);
dst_start += dst->stride / 2;
src_start += src->stride;
@ -3014,20 +3063,27 @@ static void convert_to_16(dib_info *dst, const dib_info *src, const RECT *src_re
{
const RGBQUAD *color_table = get_dib_color_table( src );
BYTE *src_start = get_pixel_ptr_4(src, src_rect->left, src_rect->top), *src_pixel;
WORD dst_colors[16];
int i;
for (i = 0; i < sizeof(dst_colors) / sizeof(dst_colors[0]); i++)
{
RGBQUAD rgb = color_table[i];
dst_colors[i] = put_field(rgb.rgbRed, dst->red_shift, dst->red_len) |
put_field(rgb.rgbGreen, dst->green_shift, dst->green_len) |
put_field(rgb.rgbBlue, dst->blue_shift, dst->blue_len);
}
for(y = src_rect->top; y < src_rect->bottom; y++)
{
int pos = (src->rect.left + src_rect->left) & 1;
src_pixel = src_start;
for (x = 0; x < src_rect->right - src_rect->left; x++, pos++)
{
RGBQUAD rgb;
if (pos & 1)
rgb = color_table[*src_pixel++ & 0xf];
dst_start[x] = dst_colors[*src_pixel++ & 0xf];
else
rgb = color_table[*src_pixel >> 4];
dst_start[x] = put_field(rgb.rgbRed, dst->red_shift, dst->red_len) |
put_field(rgb.rgbGreen, dst->green_shift, dst->green_len) |
put_field(rgb.rgbBlue, dst->blue_shift, dst->blue_len);
dst_start[x] = dst_colors[*src_pixel >> 4];
}
if(pad_size) memset(dst_start + x, 0, pad_size);
dst_start += dst->stride / 2;
@ -3040,17 +3096,24 @@ static void convert_to_16(dib_info *dst, const dib_info *src, const RECT *src_re
{
const RGBQUAD *color_table = get_dib_color_table( src );
BYTE *src_start = get_pixel_ptr_1(src, src_rect->left, src_rect->top);
WORD dst_colors[2];
int i;
for (i = 0; i < sizeof(dst_colors) / sizeof(dst_colors[0]); i++)
{
RGBQUAD rgb = color_table[i];
dst_colors[i] = put_field(rgb.rgbRed, dst->red_shift, dst->red_len) |
put_field(rgb.rgbGreen, dst->green_shift, dst->green_len) |
put_field(rgb.rgbBlue, dst->blue_shift, dst->blue_len);
}
for(y = src_rect->top; y < src_rect->bottom; y++)
{
int pos = (src->rect.left + src_rect->left) & 7;
for (x = 0; x < src_rect->right - src_rect->left; x++, pos++)
{
RGBQUAD rgb;
src_val = (src_start[pos / 8] & pixel_masks_1[pos % 8]) ? 1 : 0;
rgb = color_table[src_val];
dst_start[x] = put_field(rgb.rgbRed, dst->red_shift, dst->red_len) |
put_field(rgb.rgbGreen, dst->green_shift, dst->green_len) |
put_field(rgb.rgbBlue, dst->blue_shift, dst->blue_len);
dst_start[x] = dst_colors[src_val];
}
if(pad_size) memset(dst_start + x, 0, pad_size);
dst_start += dst->stride / 2;
@ -3271,15 +3334,22 @@ static void convert_to_8(dib_info *dst, const dib_info *src, const RECT *src_rec
else
{
const RGBQUAD *color_table = get_dib_color_table( src );
BYTE dst_colors[256];
int i;
for (i = 0; i < sizeof(dst_colors) / sizeof(dst_colors[0]); i++)
{
RGBQUAD rgb = color_table[i];
dst_colors[i] = rgb_to_pixel_colortable(dst, rgb.rgbRed, rgb.rgbGreen, rgb.rgbBlue);
}
for(y = src_rect->top; y < src_rect->bottom; y++)
{
dst_pixel = dst_start;
src_pixel = src_start;
for(x = src_rect->left; x < src_rect->right; x++)
{
RGBQUAD rgb = color_table[*src_pixel++];
*dst_pixel++ = rgb_to_pixel_colortable(dst, rgb.rgbRed, rgb.rgbGreen, rgb.rgbBlue);
}
*dst_pixel++ = dst_colors[*src_pixel++];
if(pad_size) memset(dst_pixel, 0, pad_size);
dst_start += dst->stride;
src_start += src->stride;
@ -3292,18 +3362,25 @@ static void convert_to_8(dib_info *dst, const dib_info *src, const RECT *src_rec
{
const RGBQUAD *color_table = get_dib_color_table( src );
BYTE *src_start = get_pixel_ptr_4(src, src_rect->left, src_rect->top), *src_pixel;
BYTE dst_colors[16];
int i;
for (i = 0; i < sizeof(dst_colors) / sizeof(dst_colors[0]); i++)
{
RGBQUAD rgb = color_table[i];
dst_colors[i] = rgb_to_pixel_colortable(dst, rgb.rgbRed, rgb.rgbGreen, rgb.rgbBlue);
}
for(y = src_rect->top; y < src_rect->bottom; y++)
{
int pos = (src->rect.left + src_rect->left) & 1;
src_pixel = src_start;
for (x = 0; x < src_rect->right - src_rect->left; x++, pos++)
{
RGBQUAD rgb;
if (pos & 1)
rgb = color_table[*src_pixel++ & 0xf];
dst_start[x] = dst_colors[*src_pixel++ & 0xf];
else
rgb = color_table[*src_pixel >> 4];
dst_start[x] = rgb_to_pixel_colortable(dst, rgb.rgbRed, rgb.rgbGreen, rgb.rgbBlue);
dst_start[x] = dst_colors[*src_pixel >> 4];
}
if(pad_size) memset(dst_start + x, 0, pad_size);
dst_start += dst->stride;
@ -3316,15 +3393,22 @@ static void convert_to_8(dib_info *dst, const dib_info *src, const RECT *src_rec
{
const RGBQUAD *color_table = get_dib_color_table( src );
BYTE *src_start = get_pixel_ptr_1(src, src_rect->left, src_rect->top);
BYTE dst_colors[2];
int i;
for (i = 0; i < sizeof(dst_colors) / sizeof(dst_colors[0]); i++)
{
RGBQUAD rgb = color_table[i];
dst_colors[i] = rgb_to_pixel_colortable(dst, rgb.rgbRed, rgb.rgbGreen, rgb.rgbBlue);
}
for(y = src_rect->top; y < src_rect->bottom; y++)
{
int pos = (src->rect.left + src_rect->left) & 7;
for (x = 0; x < src_rect->right - src_rect->left; x++, pos++)
{
RGBQUAD rgb;
src_val = (src_start[pos / 8] & pixel_masks_1[pos % 8]) ? 1 : 0;
rgb = color_table[src_val];
dst_start[x] = rgb_to_pixel_colortable(dst, rgb.rgbRed, rgb.rgbGreen, rgb.rgbBlue);
dst_start[x] = dst_colors[src_val];
}
if(pad_size) memset(dst_start + x, 0, pad_size);
dst_start += dst->stride;
@ -3604,6 +3688,14 @@ static void convert_to_4(dib_info *dst, const dib_info *src, const RECT *src_rec
{
const RGBQUAD *color_table = get_dib_color_table( src );
BYTE *src_start = get_pixel_ptr_8(src, src_rect->left, src_rect->top), *src_pixel;
BYTE dst_colors[256];
int i;
for (i = 0; i < sizeof(dst_colors) / sizeof(dst_colors[0]); i++)
{
RGBQUAD rgb = color_table[i];
dst_colors[i] = rgb_to_pixel_colortable(dst, rgb.rgbRed, rgb.rgbGreen, rgb.rgbBlue);
}
for(y = src_rect->top; y < src_rect->bottom; y++)
{
@ -3611,8 +3703,7 @@ static void convert_to_4(dib_info *dst, const dib_info *src, const RECT *src_rec
src_pixel = src_start;
for(x = src_rect->left; x < src_rect->right; x++)
{
RGBQUAD rgb = color_table[*src_pixel++];
dst_val = rgb_to_pixel_colortable(dst, rgb.rgbRed, rgb.rgbGreen, rgb.rgbBlue);
dst_val = dst_colors[*src_pixel++];
if((x - src_rect->left) & 1)
{
*dst_pixel = (dst_val & 0x0f) | (*dst_pixel & 0xf0);
@ -3654,6 +3745,15 @@ static void convert_to_4(dib_info *dst, const dib_info *src, const RECT *src_rec
else
{
const RGBQUAD *color_table = get_dib_color_table( src );
BYTE dst_colors[16];
int i;
for (i = 0; i < sizeof(dst_colors) / sizeof(dst_colors[0]); i++)
{
RGBQUAD rgb = color_table[i];
dst_colors[i] = rgb_to_pixel_colortable(dst, rgb.rgbRed, rgb.rgbGreen, rgb.rgbBlue);
}
for(y = src_rect->top; y < src_rect->bottom; y++)
{
int pos = (src->rect.left + src_rect->left) & 1;
@ -3661,12 +3761,10 @@ static void convert_to_4(dib_info *dst, const dib_info *src, const RECT *src_rec
src_pixel = src_start;
for(x = src_rect->left; x < src_rect->right; x++, pos++)
{
RGBQUAD rgb;
if(pos & 1)
rgb = color_table[*src_pixel++ & 0xf];
dst_val = dst_colors[*src_pixel++ & 0xf];
else
rgb = color_table[*src_pixel >> 4];
dst_val = rgb_to_pixel_colortable(dst, rgb.rgbRed, rgb.rgbGreen, rgb.rgbBlue);
dst_val = dst_colors[*src_pixel >> 4];
if((x - src_rect->left) & 1)
{
*dst_pixel = (dst_val & 0x0f) | (*dst_pixel & 0xf0);
@ -3691,16 +3789,23 @@ static void convert_to_4(dib_info *dst, const dib_info *src, const RECT *src_rec
{
const RGBQUAD *color_table = get_dib_color_table( src );
BYTE *src_start = get_pixel_ptr_1(src, src_rect->left, src_rect->top);
BYTE dst_colors[2];
int i;
for (i = 0; i < sizeof(dst_colors) / sizeof(dst_colors[0]); i++)
{
RGBQUAD rgb = color_table[i];
dst_colors[i] = rgb_to_pixel_colortable(dst, rgb.rgbRed, rgb.rgbGreen, rgb.rgbBlue);
}
for(y = src_rect->top; y < src_rect->bottom; y++)
{
int pos = (src->rect.left + src_rect->left) & 7;
dst_pixel = dst_start;
for(x = src_rect->left; x < src_rect->right; x++, pos++)
{
RGBQUAD rgb;
src_val = (src_start[pos / 8] & pixel_masks_1[pos % 8]) ? 1 : 0;
rgb = color_table[src_val];
dst_val = rgb_to_pixel_colortable(dst, rgb.rgbRed, rgb.rgbGreen, rgb.rgbBlue);
dst_val = dst_colors[src_val];
if((x - src_rect->left) & 1)
{
*dst_pixel = (dst_val & 0x0f) | (*dst_pixel & 0xf0);