From: Alejandro Piñeiro <apinheiro@igalia.com>
Date: Thu, 5 May 2016 09:27:05 +0000 (+0200)
Subject: mesa/formatquery: add a comment to clarify INTERNALFORMAT_PREFERRED
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=b48c42cd1f81bf9a411d19aea2660d75622a1350;p=mesa.git

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>
---

diff --git a/src/mesa/main/formatquery.c b/src/mesa/main/formatquery.c
index 215c14f889f..1f21d17fff6 100644
--- a/src/mesa/main/formatquery.c
+++ b/src/mesa/main/formatquery.c
@@ -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);