svga: Rebind framebuffer and tss bindings strictly when necessary.

The earlier change to ensure rendertargets and textures are always
rebound at every command buffer start had the downside of making
successive flushes no longer no-ops, as a command buffer with merely
the rebinding commands were being unnecessarily sent to the vGPU.

This change only re-emits the bindings when necessary, by keeping track
of the need to rebind outside of the dirty state update mechanism.

1 files changed, 5 insertions, 1 deletions

diff --git a/src/gallium/drivers/svga/svga_context.h b/src/gallium/drivers/svga/svga_context.h
index 7b36a3606e0..eca529d262e 100644
--- a/src/gallium/drivers/svga/svga_context.h
+++ b/src/gallium/drivers/svga/svga_context.h
@@ -358,6 +358,11 @@ struct svga_context
    struct svga_state curr;      /* state from the state tracker */
    unsigned dirty;              /* statechanges since last update_state() */
 
+   struct {
+      unsigned rendertargets:1;
+      unsigned texture_samplers:1;
+   } rebind;
+
    struct u_upload_mgr *upload_ib;
    struct u_upload_mgr *upload_vb;
    struct svga_hwtnl *hwtnl;
@@ -402,7 +407,6 @@ struct svga_context
 #define SVGA_NEW_ZERO_STRIDE         0x2000000
 #define SVGA_NEW_TEXTURE_FLAGS       0x4000000
 #define SVGA_NEW_STENCIL_REF         0x8000000
-#define SVGA_NEW_COMMAND_BUFFER      0x10000000