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test: Fix encoding declaration for RGB24 test images

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All of these test images are provided as an octal dump of
3-bytes-per-pixel data with red, green and blue bytes in that order,
referred to as RGB24 in SDL's taxonomy. However, the call to
SDL_CreateRGBSurfaceFrom() used masks that would have been appropriate
for RGBA32 data.

On little-endian platforms, the test images loaded as intended anyway,
because SDL does not actually check all four masks before deciding to
use RGB24 (it only looks at the red mask), and the red channel happens to
be in the 0x000000FF position for both RGB24 and RGBA32 on little-endian.

Unfortunately, on big-endian platforms, the required masks are not the
same and the call failed with "Unknown pixel format". As far as I can
tell, this means testautomation_surface has never succeeded on big-endian
platforms, but presumably nobody has tried to run it on such platforms
until now.

In the SDL 3 branch, this was fixed as a side-effect of commit
932f6134 "Remove mask versions of SDL_CreateRGBSurface* #6701  (#6711)",
which I have used as a reference to confirm that RGB24 is correct.

Resolves: https://github.com/libsdl-org/SDL/issues/8817
Signed-off-by: Simon McVittie <smcv@collabora.com>
This commit is contained in:
Simon McVittie 2024-01-10 10:25:28 +00:00 committed by Sam Lantinga
parent 970ed36de5
commit feaf52dba6
4 changed files with 20 additions and 130 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

45
src/test/SDL_test_imageBlit.c
View file

@ -542,24 +542,13 @@ static const SDLTest_SurfaceImage_t SDLTest_imageBlit = {
*/
SDL_Surface *SDLTest_ImageBlit()
{
SDL_Surface *surface = SDL_CreateRGBSurfaceFrom(
SDL_Surface *surface = SDL_CreateRGBSurfaceWithFormatFrom(
(void *)SDLTest_imageBlit.pixel_data,
SDLTest_imageBlit.width,
SDLTest_imageBlit.height,
SDLTest_imageBlit.bytes_per_pixel * 8,
SDLTest_imageBlit.width * SDLTest_imageBlit.bytes_per_pixel,
#if (SDL_BYTEORDER == SDL_BIG_ENDIAN)
0xff000000, /* Red bit mask. */
0x00ff0000, /* Green bit mask. */
0x0000ff00, /* Blue bit mask. */
0x000000ff /* Alpha bit mask. */
#else
0x000000ff, /* Red bit mask. */
0x0000ff00, /* Green bit mask. */
0x00ff0000, /* Blue bit mask. */
0xff000000 /* Alpha bit mask. */
#endif
);
SDL_PIXELFORMAT_RGB24);
return surface;
}
@ -1027,24 +1016,13 @@ static const SDLTest_SurfaceImage_t SDLTest_imageBlitColor = {
*/
SDL_Surface *SDLTest_ImageBlitColor()
{
SDL_Surface *surface = SDL_CreateRGBSurfaceFrom(
SDL_Surface *surface = SDL_CreateRGBSurfaceWithFormatFrom(
(void *)SDLTest_imageBlitColor.pixel_data,
SDLTest_imageBlitColor.width,
SDLTest_imageBlitColor.height,
SDLTest_imageBlitColor.bytes_per_pixel * 8,
SDLTest_imageBlitColor.width * SDLTest_imageBlitColor.bytes_per_pixel,
#if (SDL_BYTEORDER == SDL_BIG_ENDIAN)
0xff000000, /* Red bit mask. */
0x00ff0000, /* Green bit mask. */
0x0000ff00, /* Blue bit mask. */
0x000000ff /* Alpha bit mask. */
#else
0x000000ff, /* Red bit mask. */
0x0000ff00, /* Green bit mask. */
0x00ff0000, /* Blue bit mask. */
0xff000000 /* Alpha bit mask. */
#endif
);
SDL_PIXELFORMAT_RGB24);
return surface;
}
@ -1675,24 +1653,13 @@ static const SDLTest_SurfaceImage_t SDLTest_imageBlitAlpha = {
*/
SDL_Surface *SDLTest_ImageBlitAlpha()
{
SDL_Surface *surface = SDL_CreateRGBSurfaceFrom(
SDL_Surface *surface = SDL_CreateRGBSurfaceWithFormatFrom(
(void *)SDLTest_imageBlitAlpha.pixel_data,
SDLTest_imageBlitAlpha.width,
SDLTest_imageBlitAlpha.height,
SDLTest_imageBlitAlpha.bytes_per_pixel * 8,
SDLTest_imageBlitAlpha.width * SDLTest_imageBlitAlpha.bytes_per_pixel,
#if (SDL_BYTEORDER == SDL_BIG_ENDIAN)
0xff000000, /* Red bit mask. */
0x00ff0000, /* Green bit mask. */
0x0000ff00, /* Blue bit mask. */
0x000000ff /* Alpha bit mask. */
#else
0x000000ff, /* Red bit mask. */
0x0000ff00, /* Green bit mask. */
0x00ff0000, /* Blue bit mask. */
0xff000000 /* Alpha bit mask. */
#endif
);
SDL_PIXELFORMAT_RGB24);
return surface;
}

75
src/test/SDL_test_imageBlitBlend.c
View file

@ -582,24 +582,13 @@ static const SDLTest_SurfaceImage_t SDLTest_imageBlitBlendAdd = {
*/
SDL_Surface *SDLTest_ImageBlitBlendAdd()
{
SDL_Surface *surface = SDL_CreateRGBSurfaceFrom(
SDL_Surface *surface = SDL_CreateRGBSurfaceWithFormatFrom(
(void *)SDLTest_imageBlitBlendAdd.pixel_data,
SDLTest_imageBlitBlendAdd.width,
SDLTest_imageBlitBlendAdd.height,
SDLTest_imageBlitBlendAdd.bytes_per_pixel * 8,
SDLTest_imageBlitBlendAdd.width * SDLTest_imageBlitBlendAdd.bytes_per_pixel,
#if (SDL_BYTEORDER == SDL_BIG_ENDIAN)
0xff000000, /* Red bit mask. */
0x00ff0000, /* Green bit mask. */
0x0000ff00, /* Blue bit mask. */
0x000000ff /* Alpha bit mask. */
#else
0x000000ff, /* Red bit mask. */
0x0000ff00, /* Green bit mask. */
0x00ff0000, /* Blue bit mask. */
0xff000000 /* Alpha bit mask. */
#endif
);
SDL_PIXELFORMAT_RGB24);
return surface;
}
@ -1184,24 +1173,13 @@ static const SDLTest_SurfaceImage_t SDLTest_imageBlitBlend = {
*/
SDL_Surface *SDLTest_ImageBlitBlend()
{
SDL_Surface *surface = SDL_CreateRGBSurfaceFrom(
SDL_Surface *surface = SDL_CreateRGBSurfaceWithFormatFrom(
(void *)SDLTest_imageBlitBlend.pixel_data,
SDLTest_imageBlitBlend.width,
SDLTest_imageBlitBlend.height,
SDLTest_imageBlitBlend.bytes_per_pixel * 8,
SDLTest_imageBlitBlend.width * SDLTest_imageBlitBlend.bytes_per_pixel,
#if (SDL_BYTEORDER == SDL_BIG_ENDIAN)
0xff000000, /* Red bit mask. */
0x00ff0000, /* Green bit mask. */
0x0000ff00, /* Blue bit mask. */
0x000000ff /* Alpha bit mask. */
#else
0x000000ff, /* Red bit mask. */
0x0000ff00, /* Green bit mask. */
0x00ff0000, /* Blue bit mask. */
0xff000000 /* Alpha bit mask. */
#endif
);
SDL_PIXELFORMAT_RGB24);
return surface;
}
@ -1616,24 +1594,13 @@ static const SDLTest_SurfaceImage_t SDLTest_imageBlitBlendMod = {
*/
SDL_Surface *SDLTest_ImageBlitBlendMod()
{
SDL_Surface *surface = SDL_CreateRGBSurfaceFrom(
SDL_Surface *surface = SDL_CreateRGBSurfaceWithFormatFrom(
(void *)SDLTest_imageBlitBlendMod.pixel_data,
SDLTest_imageBlitBlendMod.width,
SDLTest_imageBlitBlendMod.height,
SDLTest_imageBlitBlendMod.bytes_per_pixel * 8,
SDLTest_imageBlitBlendMod.width * SDLTest_imageBlitBlendMod.bytes_per_pixel,
#if (SDL_BYTEORDER == SDL_BIG_ENDIAN)
0xff000000, /* Red bit mask. */
0x00ff0000, /* Green bit mask. */
0x0000ff00, /* Blue bit mask. */
0x000000ff /* Alpha bit mask. */
#else
0x000000ff, /* Red bit mask. */
0x0000ff00, /* Green bit mask. */
0x00ff0000, /* Blue bit mask. */
0xff000000 /* Alpha bit mask. */
#endif
);
SDL_PIXELFORMAT_RGB24);
return surface;
}
@ -2431,24 +2398,13 @@ static const SDLTest_SurfaceImage_t SDLTest_imageBlitBlendNone = {
*/
SDL_Surface *SDLTest_ImageBlitBlendNone()
{
SDL_Surface *surface = SDL_CreateRGBSurfaceFrom(
SDL_Surface *surface = SDL_CreateRGBSurfaceWithFormatFrom(
(void *)SDLTest_imageBlitBlendNone.pixel_data,
SDLTest_imageBlitBlendNone.width,
SDLTest_imageBlitBlendNone.height,
SDLTest_imageBlitBlendNone.bytes_per_pixel * 8,
SDLTest_imageBlitBlendNone.width * SDLTest_imageBlitBlendNone.bytes_per_pixel,
#if (SDL_BYTEORDER == SDL_BIG_ENDIAN)
0xff000000, /* Red bit mask. */
0x00ff0000, /* Green bit mask. */
0x0000ff00, /* Blue bit mask. */
0x000000ff /* Alpha bit mask. */
#else
0x000000ff, /* Red bit mask. */
0x0000ff00, /* Green bit mask. */
0x00ff0000, /* Blue bit mask. */
0xff000000 /* Alpha bit mask. */
#endif
);
SDL_PIXELFORMAT_RGB24);
return surface;
}
@ -2978,24 +2934,13 @@ static const SDLTest_SurfaceImage_t SDLTest_imageBlitBlendAll = {
*/
SDL_Surface *SDLTest_ImageBlitBlendAll()
{
SDL_Surface *surface = SDL_CreateRGBSurfaceFrom(
SDL_Surface *surface = SDL_CreateRGBSurfaceWithFormatFrom(
(void *)SDLTest_imageBlitBlendAll.pixel_data,
SDLTest_imageBlitBlendAll.width,
SDLTest_imageBlitBlendAll.height,
SDLTest_imageBlitBlendAll.bytes_per_pixel * 8,
SDLTest_imageBlitBlendAll.width * SDLTest_imageBlitBlendAll.bytes_per_pixel,
#if (SDL_BYTEORDER == SDL_BIG_ENDIAN)
0xff000000, /* Red bit mask. */
0x00ff0000, /* Green bit mask. */
0x0000ff00, /* Blue bit mask. */
0x000000ff /* Alpha bit mask. */
#else
0x000000ff, /* Red bit mask. */
0x0000ff00, /* Green bit mask. */
0x00ff0000, /* Blue bit mask. */
0xff000000 /* Alpha bit mask. */
#endif
);
SDL_PIXELFORMAT_RGB24);
return surface;
}

15
src/test/SDL_test_imagePrimitives.c
View file

@ -506,24 +506,13 @@ static const SDLTest_SurfaceImage_t SDLTest_imagePrimitives = {
*/
SDL_Surface *SDLTest_ImagePrimitives()
{
SDL_Surface *surface = SDL_CreateRGBSurfaceFrom(
SDL_Surface *surface = SDL_CreateRGBSurfaceWithFormatFrom(
(void *)SDLTest_imagePrimitives.pixel_data,
SDLTest_imagePrimitives.width,
SDLTest_imagePrimitives.height,
SDLTest_imagePrimitives.bytes_per_pixel * 8,
SDLTest_imagePrimitives.width * SDLTest_imagePrimitives.bytes_per_pixel,
#if (SDL_BYTEORDER == SDL_BIG_ENDIAN)
0xff000000, /* Red bit mask. */
0x00ff0000, /* Green bit mask. */
0x0000ff00, /* Blue bit mask. */
0x000000ff /* Alpha bit mask. */
#else
0x000000ff, /* Red bit mask. */
0x0000ff00, /* Green bit mask. */
0x00ff0000, /* Blue bit mask. */
0xff000000 /* Alpha bit mask. */
#endif
);
SDL_PIXELFORMAT_RGB24);
return surface;
}

15
src/test/SDL_test_imagePrimitivesBlend.c
View file

@ -679,24 +679,13 @@ static const SDLTest_SurfaceImage_t SDLTest_imagePrimitivesBlend = {
*/
SDL_Surface *SDLTest_ImagePrimitivesBlend()
{
SDL_Surface *surface = SDL_CreateRGBSurfaceFrom(
SDL_Surface *surface = SDL_CreateRGBSurfaceWithFormatFrom(
(void *)SDLTest_imagePrimitivesBlend.pixel_data,
SDLTest_imagePrimitivesBlend.width,
SDLTest_imagePrimitivesBlend.height,
SDLTest_imagePrimitivesBlend.bytes_per_pixel * 8,
SDLTest_imagePrimitivesBlend.width * SDLTest_imagePrimitivesBlend.bytes_per_pixel,
#if (SDL_BYTEORDER == SDL_BIG_ENDIAN)
0xff000000, /* Red bit mask. */
0x00ff0000, /* Green bit mask. */
0x0000ff00, /* Blue bit mask. */
0x000000ff /* Alpha bit mask. */
#else
0x000000ff, /* Red bit mask. */
0x0000ff00, /* Green bit mask. */
0x00ff0000, /* Blue bit mask. */
0xff000000 /* Alpha bit mask. */
#endif
);
SDL_PIXELFORMAT_RGB24);
return surface;
}