svga: use upload buffer for upload texture.

With this patch, when running with vgpu10, instead of mapping directly to the
guest backed memory for texture update, we'll use the texture upload buffer
and use the transfer from buffer command to update the host side texture memory.

This optimization yields about 20% performance improvement with
Lightsmark2008 and about 40% with Tropics.

Tested with Lightsmark2008, Tropics, Heaven, MTT piglit, glretrace, conform.

Reviewed-by: Brian Paul <[email protected]>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/gallium/drivers/svga/svga_context.h b/src/gallium/drivers/svga/svga_context.h
index afb04120ef5..cbc4a9c86e9 100644
--- a/src/gallium/drivers/svga/svga_context.h
+++ b/src/gallium/drivers/svga/svga_context.h
@@ -431,6 +431,7 @@ struct svga_context
    struct svga_winsys_context *swc;
    struct blitter_context *blitter;
    struct u_upload_mgr *const0_upload;
+   struct u_upload_mgr *tex_upload;
 
    struct {
       boolean no_swtnl;