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, 30 insertions, 0 deletions

diff --git a/src/gallium/drivers/identity/id_context.c b/src/gallium/drivers/identity/id_context.c
index 67be895b385..e10d3a14130 100644
--- a/src/gallium/drivers/identity/id_context.c
+++ b/src/gallium/drivers/identity/id_context.c
@@ -110,6 +110,16 @@ identity_draw_range_elements(struct pipe_context *_pipe,
                              count);
 }
 
+static void
+identity_draw_vbo(struct pipe_context *_pipe,
+                  const struct pipe_draw_info *info)
+{
+   struct identity_context *id_pipe = identity_context(_pipe);
+   struct pipe_context *pipe = id_pipe->pipe;
+
+   pipe->draw_vbo(pipe, info);
+}
+
 static struct pipe_query *
 identity_create_query(struct pipe_context *_pipe,
                       unsigned query_type)
@@ -611,6 +621,24 @@ identity_set_vertex_buffers(struct pipe_context *_pipe,
                             num_buffers,
                             buffers);
 }
+
+static void
+identity_set_index_buffer(struct pipe_context *_pipe,
+                          const struct pipe_index_buffer *_ib)
+{
+   struct identity_context *id_pipe = identity_context(_pipe);
+   struct pipe_context *pipe = id_pipe->pipe;
+   struct pipe_index_buffer unwrapped_ib, *ib = NULL;
+
+   if (_ib) {
+      unwrapped_ib = *_ib;
+      unwrapped_ib.buffer = identity_resource_unwrap(_ib->buffer);
+      ib = &unwrapped_ib;
+   }
+
+   pipe->set_index_buffer(pipe, ib);
+}
+
 static void
 identity_resource_copy_region(struct pipe_context *_pipe,
                               struct pipe_resource *_dst,
@@ -892,6 +920,7 @@ identity_context_create(struct pipe_screen *_screen, struct pipe_context *pipe)
    id_pipe->base.draw_arrays = identity_draw_arrays;
    id_pipe->base.draw_elements = identity_draw_elements;
    id_pipe->base.draw_range_elements = identity_draw_range_elements;
+   id_pipe->base.draw_vbo = identity_draw_vbo;
    id_pipe->base.create_query = identity_create_query;
    id_pipe->base.destroy_query = identity_destroy_query;
    id_pipe->base.begin_query = identity_begin_query;
@@ -931,6 +960,7 @@ identity_context_create(struct pipe_screen *_screen, struct pipe_context *pipe)
    id_pipe->base.set_fragment_sampler_views = identity_set_fragment_sampler_views;
    id_pipe->base.set_vertex_sampler_views = identity_set_vertex_sampler_views;
    id_pipe->base.set_vertex_buffers = identity_set_vertex_buffers;
+   id_pipe->base.set_index_buffer = identity_set_index_buffer;
    id_pipe->base.resource_copy_region = identity_resource_copy_region;
    id_pipe->base.clear = identity_clear;
    id_pipe->base.clear_render_target = identity_clear_render_target;