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author | Michael Drake <tlsa@netsurf-browser.org> | 2022-03-27 13:31:56 +0100 |
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committer | Michael Drake <tlsa@netsurf-browser.org> | 2022-03-28 11:11:03 +0100 |
commit | ad7544a6df4c8d3da5f0b24bb3d49a4f4d476b25 (patch) | |
tree | 3a9241d47a0702ee1b9b55e4475bbb2baff8a2fd /frontends/gtk/bitmap.c | |
parent | 6ecf0c2c6a2f5b63c77589719f855e02faefe8be (diff) | |
download | netsurf-ad7544a6df4c8d3da5f0b24bb3d49a4f4d476b25.tar.gz netsurf-ad7544a6df4c8d3da5f0b24bb3d49a4f4d476b25.tar.bz2 |
GTK: Set bitmap format to match Cairo format.
Cairo format is native endian 0xAARRGGBB.
Diffstat (limited to 'frontends/gtk/bitmap.c')
-rw-r--r-- | frontends/gtk/bitmap.c | 53 |
1 files changed, 41 insertions, 12 deletions
diff --git a/frontends/gtk/bitmap.c b/frontends/gtk/bitmap.c index 1f1a6dcd2..eaa1ae919 100644 --- a/frontends/gtk/bitmap.c +++ b/frontends/gtk/bitmap.c @@ -221,12 +221,18 @@ static unsigned char *bitmap_get_buffer(void *vbitmap) b = pixels[4 * pixel_loop + 3]; #endif - /* Core bitmaps always have a component order of rgba, - * regardless of system endianness */ - pixels[4 * pixel_loop + 0] = r; + /* We asked core for 0xAARRGGBB (native endian). */ +#if G_BYTE_ORDER == G_LITTLE_ENDIAN + pixels[4 * pixel_loop + 0] = b; pixels[4 * pixel_loop + 1] = g; - pixels[4 * pixel_loop + 2] = b; + pixels[4 * pixel_loop + 2] = r; pixels[4 * pixel_loop + 3] = t; +#else + pixels[4 * pixel_loop + 0] = t; + pixels[4 * pixel_loop + 1] = r; + pixels[4 * pixel_loop + 2] = g; + pixels[4 * pixel_loop + 3] = b; +#endif } } else { /* Alpha image: de-multiply alpha */ @@ -255,10 +261,18 @@ static unsigned char *bitmap_get_buffer(void *vbitmap) r = g = b = 0; } - pixels[4 * pixel_loop + 0] = r; + /* We asked core for 0xAARRGGBB (native endian). */ +#if G_BYTE_ORDER == G_LITTLE_ENDIAN + pixels[4 * pixel_loop + 0] = b; pixels[4 * pixel_loop + 1] = g; - pixels[4 * pixel_loop + 2] = b; + pixels[4 * pixel_loop + 2] = r; pixels[4 * pixel_loop + 3] = t; +#else + pixels[4 * pixel_loop + 0] = t; + pixels[4 * pixel_loop + 1] = r; + pixels[4 * pixel_loop + 2] = g; + pixels[4 * pixel_loop + 3] = b; +#endif } } @@ -333,12 +347,18 @@ static void bitmap_modified(void *vbitmap) if (fmt == CAIRO_FORMAT_RGB24) { /* Opaque image */ for (pixel_loop=0; pixel_loop < pixel_count; pixel_loop++) { - /* Core bitmaps always have a component order of rgba, - * regardless of system endianness */ - r = pixels[4 * pixel_loop + 0]; + /* We asked core for 0xAARRGGBB (native endian). */ +#if G_BYTE_ORDER == G_LITTLE_ENDIAN + b = pixels[4 * pixel_loop + 0]; g = pixels[4 * pixel_loop + 1]; - b = pixels[4 * pixel_loop + 2]; + r = pixels[4 * pixel_loop + 2]; t = pixels[4 * pixel_loop + 3]; +#else + t = pixels[4 * pixel_loop + 0]; + r = pixels[4 * pixel_loop + 1]; + g = pixels[4 * pixel_loop + 2]; + b = pixels[4 * pixel_loop + 3]; +#endif /* Cairo surface is ARGB, written in native endian */ #if G_BYTE_ORDER == G_LITTLE_ENDIAN @@ -356,10 +376,18 @@ static void bitmap_modified(void *vbitmap) } else { /* Alpha image: pre-multiply alpha */ for (pixel_loop=0; pixel_loop < pixel_count; pixel_loop++) { - r = pixels[4 * pixel_loop + 0]; + /* We asked core for 0xAARRGGBB (native endian). */ +#if G_BYTE_ORDER == G_LITTLE_ENDIAN + b = pixels[4 * pixel_loop + 0]; g = pixels[4 * pixel_loop + 1]; - b = pixels[4 * pixel_loop + 2]; + r = pixels[4 * pixel_loop + 2]; t = pixels[4 * pixel_loop + 3]; +#else + t = pixels[4 * pixel_loop + 0]; + r = pixels[4 * pixel_loop + 1]; + g = pixels[4 * pixel_loop + 2]; + b = pixels[4 * pixel_loop + 3]; +#endif if (t != 0) { r = ((r * (t + 1)) >> 8) & 0xff; @@ -369,6 +397,7 @@ static void bitmap_modified(void *vbitmap) r = g = b = 0; } + /* Cairo surface is ARGB, written in native endian */ #if G_BYTE_ORDER == G_LITTLE_ENDIAN pixels[4 * pixel_loop + 0] = b; pixels[4 * pixel_loop + 1] = g; |