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gallium: added util_pack_color_ub()

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This commit is contained in:
Brian Paul 2008-04-16 09:46:38 -06:00
parent dc5a853c85
commit 52544aa23b
1 changed files with 39 additions and 0 deletions
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39
src/gallium/auxiliary/util/u_pack_color.h
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@ -39,6 +39,45 @@
#include "pipe/p_format.h"
/**
* Pack ubyte R,G,B,A into dest pixel.
*/
static INLINE void
util_pack_color_ub(ubyte r, ubyte g, ubyte b, ubyte a,
enum pipe_format format, void *dest)
{
switch (format) {
case PIPE_FORMAT_R8G8B8A8_UNORM:
{
uint *d = (uint *) dest;
*d = (r << 24) | (g << 16) | (b << 8) | a;
}
return;
case PIPE_FORMAT_A8R8G8B8_UNORM:
{
uint *d = (uint *) dest;
*d = (a << 24) | (r << 16) | (g << 8) | b;
}
return;
case PIPE_FORMAT_B8G8R8A8_UNORM:
{
uint *d = (uint *) dest;
*d = (b << 24) | (g << 16) | (r << 8) | a;
}
return;
case PIPE_FORMAT_R5G6B5_UNORM:
{
ushort *d = (ushort *) dest;
*d = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | (b >> 3);
}
return;
/* XXX lots more cases to add */
default:
debug_printf("gallium: unhandled format in util_pack_color_ub()");
}
}
/**
* Note rgba outside [0,1] will be clamped for int pixel formats.
*/