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For 9-15 bit material, cutting off the lower bits leads to significant quality reduction, because these formats leave the most significant bits unused (e.g. 10 bit padded to 16 bit, transferred as 8 bit -> only 2 bits left). 16 bit formats still can be played like this, as cutting the lower bits merely reduces quality in this case. This problem was encountered with the following GPU/driver combination: OpenGL vendor string: Intel Open Source Technology Center OpenGL renderer string: Mesa DRI Intel(R) 915GM x86/MMX/SSE2 OpenGL version string: 1.4 Mesa 9.0.1 It appears 16 bit support is rather common on GPUs, so testing the actual texture depth wasn't needed until now. (There are some other Mesa GPU/driver combinations which support 16 bit only when using RG textures instead of LUMINANCE_ALPHA. This is due to OpenGL driver bugs.) |
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| .. | ||
| decode | ||
| filter | ||
| out | ||
| csputils.c | ||
| csputils.h | ||
| fmt-conversion.c | ||
| fmt-conversion.h | ||
| image_writer.c | ||
| image_writer.h | ||
| img_format.c | ||
| img_format.h | ||
| memcpy_pic.h | ||
| mp_image.c | ||
| mp_image.h | ||
| sws_utils.c | ||
| sws_utils.h | ||
| vfcap.h | ||