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Iago Toral authored
If we need the base format for a mesa_array_format we have to find the matching mesa_format first. This is expensive because it requires to loop through all existing mesa formats until we find the right match. We can resolve the base format of an array format directly by looking at its swizzle information. Also, we can have _mesa_get_format_base_format accept an uint32_t which can pack either a mesa_format or a mesa_array_format and resolve the base format for either type. This way clients do not need to check if they have a mesa_format or a mesa_array_format and call different functions depending on the case. Another reason to resolve the base format for array formats directly is that we don't have matching mesa_format enums for every possible array format, so for some GL format/type combinations we can produce array formats that don't have a corresponding mesa format, in which case we would not be able to find the base format. Example format=GL_RGB, type=GL_UNSIGNED_SHORT. This type would map to something like MESA_FORMAT_RGB_UNORM16, but we don't have that. Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
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