* Copyright 2005-2007, Haiku.
* Distributed under the terms of the MIT License.
*
* Authors:
* Stephan Aßmus <superstippi@gmx.de>
*/
#ifndef DRAWING_SUPPORT_H
#define DRAWING_SUPPORT_H
#include <SupportDefs.h>
#include <string.h>
class BRect;
static inline void
gfxset32(uint8* dst, uint32 color, int32 numBytes)
{
uint64 s64 = ((uint64)color << 32) | color;
while (numBytes >= 8) {
*(uint64*)dst = s64;
numBytes -= 8;
dst += 8;
}
if (numBytes == 4) {
*(uint32*)dst = color;
}
}
union pixel32 {
uint32 data32;
uint8 data8[4];
};
static inline void
blend_line32(uint8* buffer, int32 pixels, uint8 r, uint8 g, uint8 b, uint8 a)
{
pixel32 p;
r = (r * a) >> 8;
g = (g * a) >> 8;
b = (b * a) >> 8;
a = 255 - a;
uint8 tempBuffer[pixels * 4];
uint8* t = tempBuffer;
uint8* s = buffer;
for (int32 i = 0; i < pixels; i++) {
p.data32 = *(uint32*)s;
t[0] = ((p.data8[0] * a) >> 8) + b;
t[1] = ((p.data8[1] * a) >> 8) + g;
t[2] = ((p.data8[2] * a) >> 8) + r;
t += 4;
s += 4;
}
memcpy(buffer, tempBuffer, pixels * 4);
}
void align_rect_to_pixels(BRect* rect);
#endif
