mesa: In helpers, only check driver capability for meta

Make API context and version checks done by the helper functions pass
unconditionally while meta is in progress. This transparently makes
extension checks solely dependent on struct gl_extensions while in meta.

v2: Use an 8-bit data type instead of a GLuint

Signed-off-by: Nanley Chery <[email protected]>
Reviewed-by: Chad Versace <[email protected]>

1 files changed, 11 insertions, 0 deletions

diff --git a/src/mesa/drivers/common/meta.c b/src/mesa/drivers/common/meta.c
index e27489d6195..0ffcd9c2c3f 100644
--- a/src/mesa/drivers/common/meta.c
+++ b/src/mesa/drivers/common/meta.c
@@ -449,6 +449,16 @@ _mesa_meta_begin(struct gl_context *ctx, GLbitfield state)
    save->API = ctx->API;
    ctx->API = API_OPENGL_COMPAT;
 
+   /* Mesa's extension helper functions use the current context's API to look up
+    * the version required by an extension as a step in determining whether or
+    * not it has been advertised. Since meta aims to only be restricted by the
+    * driver capability (and not by whether or not an extension has been
+    * advertised), set the helper functions' Version variable to a value that
+    * will make the checks on the context API and version unconditionally pass.
+    */
+   save->ExtensionsVersion = ctx->Extensions.Version;
+   ctx->Extensions.Version = ~0;
+
    /* Pausing transform feedback needs to be done early, or else we won't be
     * able to change other state.
     */
@@ -1222,6 +1232,7 @@ _mesa_meta_end(struct gl_context *ctx)
    ctx->Meta->SaveStackDepth--;
 
    ctx->API = save->API;
+   ctx->Extensions.Version = save->ExtensionsVersion;
 }