[Mesa-dev] [PATCH 1/2] mesa/main: add a comment to clarify INTERNALFORMAT_PREFERRED

[Alejandro Piñeiro]

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.
---
 src/mesa/main/formatquery.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/mesa/main/formatquery.c b/src/mesa/main/formatquery.c
index 215c14f..1f21d17 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);
-- 
2.5.0