fixed point drawing in 3dgfx and added new greets screen

[dosdemo] / src / gfxutil.h

diff --git a/src/gfxutil.h b/src/gfxutil.h
index 8de5607..603c11d 100644 (file)
--- a/src/gfxutil.h
+++ b/src/gfxutil.h
@@ -1,6 +1,16 @@
 #ifndef GFXUTIL_H_
 #define GFXUTIL_H_
 
+#define PACK_RGB16(r, g, b) \
+       (((((r) >> 3) & 0x1f) << 11) | ((((g) >> 2) & 0x3f) << 5) | (((b) >> 3) & 0x1f))
+
+#define UNPACK_R16(c)  (((c) >> 8) & 0xf8)
+#define UNPACK_G16(c)  (((c) >> 3) & 0xfc)
+#define UNPACK_B16(c)  (((c) << 3) & 0xf8)
+
+#define PACK_RGB32(r, g, b) \
+       ((((r) & 0xff) << 16) | (((g) & 0xff) << 8) | ((b) & 0xff))
+
 int clip_line(int *x0, int *y0, int *x1, int *y1, int xmin, int ymin, int xmax, int ymax);
 void draw_line(int x0, int y0, int x1, int y1, unsigned short color);