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, 3 insertions, 0 deletions

diff --git a/src/gallium/drivers/nv50/nv50_context.h b/src/gallium/drivers/nv50/nv50_context.h
index 12c4a93a9b..a7c2b5d487 100644
--- a/src/gallium/drivers/nv50/nv50_context.h
+++ b/src/gallium/drivers/nv50/nv50_context.h
@@ -148,6 +148,7 @@ struct nv50_context {
 	struct pipe_resource *constbuf[PIPE_SHADER_TYPES];
 	struct pipe_vertex_buffer vtxbuf[PIPE_MAX_ATTRIBS];
 	unsigned vtxbuf_nr;
+	struct pipe_index_buffer idxbuf;
 	struct nv50_vtxelt_stateobj *vtxelt;
 	struct nv50_sampler_stateobj *sampler[3][PIPE_MAX_SAMPLERS];
 	unsigned sampler_nr[3];
@@ -197,6 +198,8 @@ extern void nv50_draw_elements_instanced(struct pipe_context *pipe,
 					 unsigned count,
 					 unsigned startInstance,
 					 unsigned instanceCount);
+extern void nv50_draw_vbo(struct pipe_context *pipe,
+                          const struct pipe_draw_info *info);
 extern void nv50_vtxelt_construct(struct nv50_vtxelt_stateobj *cso);
 extern struct nouveau_stateobj *nv50_vbo_validate(struct nv50_context *nv50);