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wined3d: Implement a R5G6B5 to X8R8G8B8 surface format converter. 

Based on a patch by Mike Ruprecht.
This commit is contained in:
Henri Verbeet 2009-01-15 09:58:45 +01:00 committed by Alexandre Julliard
parent e398a779f7
commit 17b94f6034
1 changed files with 41 additions and 0 deletions
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41
dlls/wined3d/surface_base.c
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@ -702,6 +702,46 @@ static void convert_r32f_r16f(const BYTE *src, BYTE *dst, DWORD pitch_in, DWORD
}
}
static void convert_r5g6b5_x8r8g8b8(const BYTE *src, BYTE *dst,
DWORD pitch_in, DWORD pitch_out, unsigned int w, unsigned int h)
{
static const unsigned char convert_5to8[] =
{
0x00, 0x08, 0x10, 0x19, 0x21, 0x29, 0x31, 0x3a,
0x42, 0x4a, 0x52, 0x5a, 0x63, 0x6b, 0x73, 0x7b,
0x84, 0x8c, 0x94, 0x9c, 0xa5, 0xad, 0xb5, 0xbd,
0xc5, 0xce, 0xd6, 0xde, 0xe6, 0xef, 0xf7, 0xff,
};
static const unsigned char convert_6to8[] =
{
0x00, 0x04, 0x08, 0x0c, 0x10, 0x14, 0x18, 0x1c,
0x20, 0x24, 0x28, 0x2d, 0x31, 0x35, 0x39, 0x3d,
0x41, 0x45, 0x49, 0x4d, 0x51, 0x55, 0x59, 0x5d,
0x61, 0x65, 0x69, 0x6d, 0x71, 0x75, 0x79, 0x7d,
0x82, 0x86, 0x8a, 0x8e, 0x92, 0x96, 0x9a, 0x9e,
0xa2, 0xa6, 0xaa, 0xae, 0xb2, 0xb6, 0xba, 0xbe,
0xc2, 0xc6, 0xca, 0xce, 0xd2, 0xd7, 0xdb, 0xdf,
0xe3, 0xe7, 0xeb, 0xef, 0xf3, 0xf7, 0xfb, 0xff,
};
unsigned int x, y;
TRACE("Converting %ux%u pixels, pitches %u %u\n", w, h, pitch_in, pitch_out);
for (y = 0; y < h; ++y)
{
const WORD *src_line = (const WORD *)(src + y * pitch_in);
DWORD *dst_line = (DWORD *)(dst + y * pitch_out);
for (x = 0; x < w; ++x)
{
WORD pixel = src_line[x];
dst_line[x] = 0xff000000
| convert_5to8[(pixel & 0xf800) >> 11] << 16
| convert_6to8[(pixel & 0x07e0) >> 5] << 8
| convert_5to8[(pixel & 0x001f)];
}
}
}
struct d3dfmt_convertor_desc {
WINED3DFORMAT from, to;
void (*convert)(const BYTE *src, BYTE *dst, DWORD pitch_in, DWORD pitch_out, unsigned int w, unsigned int h);
@ -710,6 +750,7 @@ struct d3dfmt_convertor_desc {
static const struct d3dfmt_convertor_desc convertors[] =
{
{WINED3DFMT_R32F, WINED3DFMT_R16F, convert_r32f_r16f},
{WINED3DFMT_R5G6B5, WINED3DFMT_X8R8G8B8, convert_r5g6b5_x8r8g8b8},
};
static inline const struct d3dfmt_convertor_desc *find_convertor(WINED3DFORMAT from, WINED3DFORMAT to)