diff options
Diffstat (limited to 'src')
-rw-r--r-- | src/mesa/main/formats.c | 64 | ||||
-rw-r--r-- | src/mesa/main/formats.h | 7 |
2 files changed, 71 insertions, 0 deletions
diff --git a/src/mesa/main/formats.c b/src/mesa/main/formats.c index c6634c458de..11d670689bf 100644 --- a/src/mesa/main/formats.c +++ b/src/mesa/main/formats.c @@ -1343,6 +1343,70 @@ _mesa_get_srgb_format_linear(gl_format format) /** + * If the given format is a compressed format, return a corresponding + * uncompressed format. + */ +gl_format +_mesa_get_uncompressed_format(gl_format format) +{ + switch (format) { + case MESA_FORMAT_RGB_FXT1: + return MESA_FORMAT_RGB888; + case MESA_FORMAT_RGBA_FXT1: + return MESA_FORMAT_RGBA8888; + case MESA_FORMAT_RGB_DXT1: + case MESA_FORMAT_SRGB_DXT1: + return MESA_FORMAT_RGB888; + case MESA_FORMAT_RGBA_DXT1: + case MESA_FORMAT_SRGBA_DXT1: + return MESA_FORMAT_RGBA8888; + case MESA_FORMAT_RGBA_DXT3: + case MESA_FORMAT_SRGBA_DXT3: + return MESA_FORMAT_RGBA8888; + case MESA_FORMAT_RGBA_DXT5: + case MESA_FORMAT_SRGBA_DXT5: + return MESA_FORMAT_RGBA8888; + case MESA_FORMAT_RED_RGTC1: + return MESA_FORMAT_R8; + case MESA_FORMAT_SIGNED_RED_RGTC1: + return MESA_FORMAT_SIGNED_R8; + case MESA_FORMAT_RG_RGTC2: + return MESA_FORMAT_RG88; + case MESA_FORMAT_SIGNED_RG_RGTC2: + return MESA_FORMAT_SIGNED_RG88_REV; + case MESA_FORMAT_L_LATC1: + return MESA_FORMAT_L8; + case MESA_FORMAT_SIGNED_L_LATC1: + return MESA_FORMAT_SIGNED_L8; + case MESA_FORMAT_LA_LATC2: + return MESA_FORMAT_AL88; + case MESA_FORMAT_SIGNED_LA_LATC2: + return MESA_FORMAT_SIGNED_AL88; + default: +#ifdef DEBUG + assert(!_mesa_is_format_compressed(format)); +#endif + return format; + } +} + + +GLuint +_mesa_format_num_components(gl_format format) +{ + const struct gl_format_info *info = _mesa_get_format_info(format); + return ((info->RedBits > 0) + + (info->GreenBits > 0) + + (info->BlueBits > 0) + + (info->AlphaBits > 0) + + (info->LuminanceBits > 0) + + (info->IntensityBits > 0) + + (info->DepthBits > 0) + + (info->StencilBits > 0)); +} + + +/** * Return number of bytes needed to store an image of the given size * in the given format. */ diff --git a/src/mesa/main/formats.h b/src/mesa/main/formats.h index 75d93debaca..610204cb37c 100644 --- a/src/mesa/main/formats.h +++ b/src/mesa/main/formats.h @@ -266,4 +266,11 @@ _mesa_test_formats(void); extern gl_format _mesa_get_srgb_format_linear(gl_format format); +extern gl_format +_mesa_get_uncompressed_format(gl_format format); + +extern GLuint +_mesa_format_num_components(gl_format format); + + #endif /* FORMATS_H */ |