diff options
Diffstat (limited to 'test/composite-test.c')
| -rw-r--r-- | test/composite-test.c | 33 |
1 files changed, 24 insertions, 9 deletions
diff --git a/test/composite-test.c b/test/composite-test.c index d6596f49..388c8e64 100644 --- a/test/composite-test.c +++ b/test/composite-test.c @@ -1,10 +1,9 @@ #include <stdlib.h> #include <stdio.h> #include "pixman.h" - #include <gtk/gtk.h> -static GdkPixbuf * +GdkPixbuf * pixbuf_from_argb32 (uint32_t *bits, int width, int height, @@ -15,20 +14,36 @@ pixbuf_from_argb32 (uint32_t *bits, int p_stride = gdk_pixbuf_get_rowstride (pixbuf); guint32 *p_bits = (guint32 *)gdk_pixbuf_get_pixels (pixbuf); int w, h; - + for (h = 0; h < height; ++h) { for (w = 0; w < width; ++w) { uint32_t argb = bits[h * stride + w]; - guint32 rgba; - - rgba = (argb << 8) | (argb >> 24); - - p_bits[h * (p_stride / 4) + w] = rgba; + guint r, g, b, a; + char *pb = p_bits; + + pb += h * p_stride + w * 4; + + r = (argb & 0x00ff0000) >> 16; + g = (argb & 0x0000ff00) >> 8; + b = (argb & 0x000000ff) >> 0; + a = (argb & 0xff000000) >> 24; + + if (a) + { + r = (r * 255) / a; + g = (g * 255) / a; + b = (b * 255) / a; + } + + pb[0] = r; + pb[1] = g; + pb[2] = b; + pb[3] = a; } } - + return pixbuf; } |