mesa: Create pointers for multithread marshalling dispatch table.

This patch splits the context's CurrentDispatch pointer into two
pointers, CurrentClientDispatch, and CurrentServerDispatch, so that
when doing multithread marshalling, we can distinguish between the
dispatch table that's being used by the client (to serialize GL calls
into the marshal buffer) and the dispatch table that's being used by
the server (to execute the GL calls).

Acked-by: Timothy Arceri <[email protected]>
Acked-by: Marek Olšák <[email protected]>
Tested-by: Dieter Nützel <[email protected]>
Tested-by: Mike Lothian <[email protected]>

1 files changed, 7 insertions, 0 deletions

diff --git a/src/mesa/main/glthread.c b/src/mesa/main/glthread.c
index 76eb0cf7dac..8877a695f0c 100644
--- a/src/mesa/main/glthread.c
+++ b/src/mesa/main/glthread.c
@@ -54,6 +54,8 @@ glthread_allocate_batch(struct gl_context *ctx)
 static void
 glthread_unmarshal_batch(struct gl_context *ctx, struct glthread_batch *batch)
 {
+   _glapi_set_dispatch(ctx->CurrentServerDispatch);
+
    free(batch->buffer);
    free(batch);
 }
@@ -156,6 +158,10 @@ _mesa_glthread_destroy(struct gl_context *ctx)
 
    free(glthread);
    ctx->GLThread = NULL;
+
+   /* Remove ourselves from the dispatch table. */
+   ctx->CurrentClientDispatch = ctx->CurrentServerDispatch;
+   _glapi_set_dispatch(ctx->CurrentClientDispatch);
 }
 
 void
@@ -183,6 +189,7 @@ _mesa_glthread_flush_batch(struct gl_context *ctx)
     */
    if (false) {
       glthread_unmarshal_batch(ctx, batch);
+      _glapi_set_dispatch(ctx->CurrentClientDispatch);
       return;
    }