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, 18 insertions, 0 deletions

diff --git a/src/gallium/drivers/failover/fo_state.c b/src/gallium/drivers/failover/fo_state.c
index 12e42379f9..c265f381b6 100644
--- a/src/gallium/drivers/failover/fo_state.c
+++ b/src/gallium/drivers/failover/fo_state.c
@@ -583,6 +583,23 @@ failover_set_vertex_buffers(struct pipe_context *pipe,
 }
 
 
+static void
+failover_set_index_buffer(struct pipe_context *pipe,
+                          const struct pipe_index_buffer *ib)
+{
+   struct failover_context *failover = failover_context(pipe);
+
+   if (ib)
+      memcpy(&failover->index_buffer, ib, sizeof(failover->index_buffer));
+   else
+      memset(&failover->index_buffer, 0, sizeof(failover->index_buffer));
+
+   failover->dirty |= FO_NEW_INDEX_BUFFER;
+   failover->sw->set_index_buffer( failover->sw, ib );
+   failover->hw->set_index_buffer( failover->hw, ib );
+}
+
+
 void
 failover_set_constant_buffer(struct pipe_context *pipe,
                              uint shader, uint index,
@@ -635,6 +652,7 @@ failover_init_state_functions( struct failover_context *failover )
    failover->pipe.set_vertex_sampler_views = failover_set_vertex_sampler_views;
    failover->pipe.set_viewport_state = failover_set_viewport_state;
    failover->pipe.set_vertex_buffers = failover_set_vertex_buffers;
+   failover->pipe.set_index_buffer = failover_set_index_buffer;
    failover->pipe.set_constant_buffer = failover_set_constant_buffer;
    failover->pipe.create_sampler_view = failover_create_sampler_view;
    failover->pipe.sampler_view_destroy = failover_sampler_view_destroy;