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mesa/formatquery: add a comment to clarify INTERNALFORMAT_PREFERRED 

The comment clarifies that the driver is called only to try to get
a preferred internalformat, and that it was already checked if the
format is supported or not.

Acked-by: Eduardo Lima <elima@igalia.com>
Acked-by: Antia Puentes <apuentes@igalia.com>

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
This commit is contained in:
Alejandro Piñeiro 2016-05-05 11:27:05 +02:00
parent c1ceee6cc9
commit b48c42cd1f
1 changed files with 4 additions and 1 deletions
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5
src/mesa/main/formatquery.c
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@ -902,7 +902,10 @@ _mesa_GetInternalformativ(GLenum target, GLenum internalformat, GLenum pname,
* format for representing resources of the specified <internalformat> is
* returned in <params>.
*
* Therefore, we let the driver answer.
* Therefore, we let the driver answer. Note that if we reach this
* point, it means that the internalformat is supported, so the driver
* is called just to try to get a preferred format. If not supported,
* GL_NONE was already returned and the driver is not called.
*/
ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
buffer);