draw: draw_range_elements trial

3 files changed, 33 insertions, 6 deletions

diff --git a/src/gallium/drivers/softpipe/sp_context.c b/src/gallium/drivers/softpipe/sp_context.c
index 045a1f74a95..1e0106b86c7 100644
--- a/src/gallium/drivers/softpipe/sp_context.c
+++ b/src/gallium/drivers/softpipe/sp_context.c
@@ -179,6 +179,7 @@ softpipe_create( struct pipe_screen *screen,
 
    softpipe->pipe.draw_arrays = softpipe_draw_arrays;
    softpipe->pipe.draw_elements = softpipe_draw_elements;
+   softpipe->pipe.draw_range_elements = softpipe_draw_range_elements;
    softpipe->pipe.set_edgeflags = softpipe_set_edgeflags;
 
 
diff --git a/src/gallium/drivers/softpipe/sp_draw_arrays.c b/src/gallium/drivers/softpipe/sp_draw_arrays.c
index 6c58f9909da..dbecf6865f4 100644
--- a/src/gallium/drivers/softpipe/sp_draw_arrays.c
+++ b/src/gallium/drivers/softpipe/sp_draw_arrays.c
@@ -108,11 +108,14 @@ softpipe_draw_arrays(struct pipe_context *pipe, unsigned mode,
  *
  * XXX should the element buffer be specified/bound with a separate function?
  */
+
 boolean
-softpipe_draw_elements(struct pipe_context *pipe,
-                       struct pipe_buffer *indexBuffer,
-                       unsigned indexSize,
-                       unsigned mode, unsigned start, unsigned count)
+softpipe_draw_range_elements(struct pipe_context *pipe,
+                             struct pipe_buffer *indexBuffer,
+                             unsigned indexSize,
+                             unsigned min_index,
+                             unsigned max_index,
+                             unsigned mode, unsigned start, unsigned count)
 {
    struct softpipe_context *sp = softpipe_context(pipe);
    struct draw_context *draw = sp->draw;
@@ -141,11 +144,14 @@ softpipe_draw_elements(struct pipe_context *pipe,
       void *mapped_indexes
          = pipe->winsys->buffer_map(pipe->winsys, indexBuffer,
                                     PIPE_BUFFER_USAGE_CPU_READ);
-      draw_set_mapped_element_buffer(draw, indexSize, mapped_indexes);
+      draw_set_mapped_element_buffer_range(draw, indexSize,
+                                           min_index,
+                                           max_index,
+                                           mapped_indexes);
    }
    else {
       /* no index/element buffer */
-      draw_set_mapped_element_buffer(draw, 0, NULL);
+      draw_set_mapped_element_buffer_range(draw, 0, start, start + count - 1, NULL);
    }
 
 
@@ -171,6 +177,19 @@ softpipe_draw_elements(struct pipe_context *pipe,
    return TRUE;
 }
 
+boolean
+softpipe_draw_elements(struct pipe_context *pipe,
+                       struct pipe_buffer *indexBuffer,
+                       unsigned indexSize,
+                       unsigned mode, unsigned start, unsigned count)
+{
+   return softpipe_draw_range_elements( pipe, indexBuffer,
+                                        indexSize,
+                                        0, 0xffffffff,
+                                        mode, start, count );
+}
+
+
 
 void
 softpipe_set_edgeflags(struct pipe_context *pipe, const unsigned *edgeflags)
diff --git a/src/gallium/drivers/softpipe/sp_state.h b/src/gallium/drivers/softpipe/sp_state.h
index 452e51fa791..701e02b295e 100644
--- a/src/gallium/drivers/softpipe/sp_state.h
+++ b/src/gallium/drivers/softpipe/sp_state.h
@@ -171,6 +171,13 @@ boolean softpipe_draw_elements(struct pipe_context *pipe,
 			       struct pipe_buffer *indexBuffer,
 			       unsigned indexSize,
 			       unsigned mode, unsigned start, unsigned count);
+boolean
+softpipe_draw_range_elements(struct pipe_context *pipe,
+                             struct pipe_buffer *indexBuffer,
+                             unsigned indexSize,
+                             unsigned min_index,
+                             unsigned max_index,
+                             unsigned mode, unsigned start, unsigned count);
 
 void
 softpipe_set_edgeflags(struct pipe_context *pipe, const unsigned *edgeflags);