gallium: Implement draw_vbo and set_index_buffer for all drivers.

Some drivers define a generic function that is called by all drawing
functions.  To implement draw_vbo for such drivers, either draw_vbo
calls the generic function or the prototype of the generic function is
changed to match draw_vbo.

Other drivers have no such generic function.  draw_vbo is implemented by
calling either draw_arrays and draw_elements.

For most drivers, set_index_buffer does not mark the state dirty for
tracking.  Instead, the index buffer state is emitted whenever draw_vbo
is called, just like the case with draw_elements.  It surely can be
improved.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/gallium/drivers/failover/fo_context.h b/src/gallium/drivers/failover/fo_context.h
index 9d3e0d0dba0..1afa6c9ceed 100644
--- a/src/gallium/drivers/failover/fo_context.h
+++ b/src/gallium/drivers/failover/fo_context.h
@@ -56,6 +56,7 @@
 #define FO_NEW_VERTEX_BUFFER   0x40000
 #define FO_NEW_VERTEX_ELEMENT  0x80000
 #define FO_NEW_SAMPLE_MASK     0x100000
+#define FO_NEW_INDEX_BUFFER    0x200000
 
 
 
@@ -97,6 +98,7 @@ struct failover_context {
    struct pipe_scissor_state scissor;
    struct pipe_viewport_state viewport;
    struct pipe_vertex_buffer vertex_buffers[PIPE_MAX_ATTRIBS];
+   struct pipe_index_buffer index_buffer;
 
    uint num_vertex_buffers;