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isl: Document gen7_filter_tiling()

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Chad Versace 2016-01-05 11:28:49 -08:00
parent 33f06842be
commit 8135786605
1 changed files with 11 additions and 0 deletions
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11
src/isl/isl_gen7.c
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@ -185,6 +185,17 @@ gen7_format_needs_valign2(const struct isl_device *dev,
format == ISL_FORMAT_R32G32B32_FLOAT;
}
/**
* @brief Filter out tiling flags that are incompatible with the surface.
*
* The resultant outgoing @a flags is a subset of the incoming @a flags. The
* outgoing flags may be empty (0x0) if the incoming flags were too
* restrictive.
*
* For example, if the surface will be used for a display
* (ISL_SURF_USAGE_DISPLAY_BIT), then this function filters out all tiling
* flags except ISL_TILING_X_BIT and ISL_TILING_LINEAR_BIT.
*/
void
gen7_filter_tiling(const struct isl_device *dev,
const struct isl_surf_init_info *restrict info,