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intel/isl: Add a better comment for format_supports_ccs_e

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Reviewed-by: Chad Versace <chadversary@chromium.org>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
This commit is contained in:
Jason Ekstrand 2017-02-02 09:51:55 -08:00
parent 45b3eb4dfc
commit 37a6f48ceb
1 changed files with 6 additions and 0 deletions
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6
src/intel/isl/isl_format.c
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@ -459,6 +459,12 @@ isl_format_supports_ccs_d(const struct gen_device_info *devinfo,
return fmtl->bpb == 32 || fmtl->bpb == 64 || fmtl->bpb == 128;
}
/**
* Returns true if the given format can support single-sample color
* compression. This function only checks the format. In order to determine
* if a surface supports CCS_E, several other factors need to be considered
* such as tiling and sample count. See isl_surf_get_ccs_surf for details.
*/
bool
isl_format_supports_ccs_e(const struct gen_device_info *devinfo,
enum isl_format format)