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 <[email protected]>
Reviewed-by: Marek Olšák <[email protected]>
Reviewed-by: José Fonseca<[email protected]>
Reviewed-by: Brian Paul <[email protected]>
Reviewed-by: Roland Scheidegger <[email protected]>

2 files changed, 13 insertions, 9 deletions

diff --git a/src/gallium/drivers/svga/svga_pipe_misc.c b/src/gallium/drivers/svga/svga_pipe_misc.c
index 7884b6d236b..f1c007b5594 100644
--- a/src/gallium/drivers/svga/svga_pipe_misc.c
+++ b/src/gallium/drivers/svga/svga_pipe_misc.c
@@ -31,12 +31,14 @@
 #include "svga_surface.h"
 
 
-static void svga_set_scissor_state( struct pipe_context *pipe,
-                                 const struct pipe_scissor_state *scissor )
+static void svga_set_scissor_states( struct pipe_context *pipe,
+                                     unsigned start_slot,
+                                     unsigned num_scissors,
+                                     const struct pipe_scissor_state *scissors )
 {
    struct svga_context *svga = svga_context(pipe);
 
-   memcpy( &svga->curr.scissor, scissor, sizeof(*scissor) );
+   memcpy( &svga->curr.scissor, scissors, sizeof(*scissors) );
    svga->dirty |= SVGA_NEW_SCISSOR;
 }
 
@@ -161,12 +163,14 @@ static void svga_set_clip_state( struct pipe_context *pipe,
 /* Called when driver state tracker notices changes to the viewport
  * matrix:
  */
-static void svga_set_viewport_state( struct pipe_context *pipe,
-				     const struct pipe_viewport_state *viewport )
+static void svga_set_viewport_states( struct pipe_context *pipe,
+                                      unsigned start_slot,
+                                      unsigned num_viewports,
+                                      const struct pipe_viewport_state *viewports )
 {
    struct svga_context *svga = svga_context(pipe);
 
-   svga->curr.viewport = *viewport; /* struct copy */
+   svga->curr.viewport = *viewports; /* struct copy */
 
    svga->dirty |= SVGA_NEW_VIEWPORT;
 }
@@ -175,11 +179,11 @@ static void svga_set_viewport_state( struct pipe_context *pipe,
 
 void svga_init_misc_functions( struct svga_context *svga )
 {
-   svga->pipe.set_scissor_state = svga_set_scissor_state;
+   svga->pipe.set_scissor_states = svga_set_scissor_states;
    svga->pipe.set_polygon_stipple = svga_set_polygon_stipple;
    svga->pipe.set_framebuffer_state = svga_set_framebuffer_state;
    svga->pipe.set_clip_state = svga_set_clip_state;
-   svga->pipe.set_viewport_state = svga_set_viewport_state;
+   svga->pipe.set_viewport_states = svga_set_viewport_states;
 }
 
 
diff --git a/src/gallium/drivers/svga/svga_swtnl_state.c b/src/gallium/drivers/svga/svga_swtnl_state.c
index dea3a26b6f2..d744f18ee72 100644
--- a/src/gallium/drivers/svga/svga_swtnl_state.c
+++ b/src/gallium/drivers/svga/svga_swtnl_state.c
@@ -80,7 +80,7 @@ static void set_draw_viewport( struct svga_context *svga )
    vp.translate[0] += adjx;
    vp.translate[1] += adjy;
 
-   draw_set_viewport_state(svga->swtnl.draw, &vp);
+   draw_set_viewport_states(svga->swtnl.draw, 0, 1, &vp);
 }
 
 static enum pipe_error