gallium: Add support for multiple viewports

Gallium supported only a single viewport/scissor combination. This
commit changes the interface to allow us to add support for multiple
viewports/scissors.

Signed-off-by: Zack Rusin <zackr@vmware.com>
Reviewed-by: Marek Olšák <maraeo@gmail.com>
Reviewed-by: José Fonseca<jfonseca@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/src/gallium/auxiliary/draw/draw_context.c b/src/gallium/auxiliary/draw/draw_context.c
index 78190388ef..b555c65e85 100644
--- a/src/gallium/auxiliary/draw/draw_context.c
+++ b/src/gallium/auxiliary/draw/draw_context.c
@@ -311,9 +311,12 @@ void draw_set_clip_state( struct draw_context *draw,
 /**
  * Set the draw module's viewport state.
  */
-void draw_set_viewport_state( struct draw_context *draw,
-                              const struct pipe_viewport_state *viewport )
+void draw_set_viewport_states( struct draw_context *draw,
+                               unsigned start_slot,
+                               unsigned num_viewports,
+                               const struct pipe_viewport_state *vps )
 {
+   const struct pipe_viewport_state *viewport = vps;
    draw_do_flush(draw, DRAW_FLUSH_PARAMETER_CHANGE);
    draw->viewport = *viewport; /* struct copy */
    draw->identity_viewport = (viewport->scale[0] == 1.0f &&