gallium: add facilities for indirect drawing

v2:
Added comments to util_draw_indirect, clarified and fixed map size.
Removed unlikely().

2 files changed, 8 insertions, 0 deletions

diff --git a/src/gallium/drivers/llvmpipe/lp_draw_arrays.c b/src/gallium/drivers/llvmpipe/lp_draw_arrays.c
index 99e6d198837..edfb2040969 100644
--- a/src/gallium/drivers/llvmpipe/lp_draw_arrays.c
+++ b/src/gallium/drivers/llvmpipe/lp_draw_arrays.c
@@ -33,6 +33,7 @@
 
 #include "pipe/p_defines.h"
 #include "pipe/p_context.h"
+#include "util/u_draw.h"
 #include "util/u_prim.h"
 
 #include "lp_context.h"
@@ -60,6 +61,11 @@ llvmpipe_draw_vbo(struct pipe_context *pipe, const struct pipe_draw_info *info)
    if (!llvmpipe_check_render_cond(lp))
       return;
 
+   if (info->indirect) {
+      util_draw_indirect(pipe, info);
+      return;
+   }
+
    if (lp->dirty)
       llvmpipe_update_derived( lp );
 
diff --git a/src/gallium/drivers/llvmpipe/lp_screen.c b/src/gallium/drivers/llvmpipe/lp_screen.c
index 26ab2946af3..356fad79964 100644
--- a/src/gallium/drivers/llvmpipe/lp_screen.c
+++ b/src/gallium/drivers/llvmpipe/lp_screen.c
@@ -217,6 +217,8 @@ llvmpipe_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
    case PIPE_CAP_TGSI_TEXCOORD:
       return 0;
+   case PIPE_CAP_DRAW_INDIRECT:
+      return 1;
 
    case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
       return 16;