draw: clear the draw buffers in draw

Moves clearing of the draw so target buffers to the draw
module. They had to be cleared in the drivers before
which was quite messy.

Signed-off-by: Zack Rusin <[email protected]>
Reviewed-by: Jose Fonseca <[email protected]>
Reviewed-by: Brian Paul <[email protected]>

3 files changed, 5 insertions, 8 deletions

diff --git a/src/gallium/drivers/llvmpipe/lp_context.h b/src/gallium/drivers/llvmpipe/lp_context.h
index abfe852bae5..051596878d9 100644
--- a/src/gallium/drivers/llvmpipe/lp_context.h
+++ b/src/gallium/drivers/llvmpipe/lp_context.h
@@ -91,6 +91,7 @@ struct llvmpipe_context {
 
    struct draw_so_target *so_targets[PIPE_MAX_SO_BUFFERS];
    int num_so_targets;
+   unsigned so_append_bitmask;
    struct pipe_query_data_so_statistics so_stats;
    unsigned num_primitives_generated;
 
diff --git a/src/gallium/drivers/llvmpipe/lp_draw_arrays.c b/src/gallium/drivers/llvmpipe/lp_draw_arrays.c
index 4e239043ec4..11b665af8ef 100644
--- a/src/gallium/drivers/llvmpipe/lp_draw_arrays.c
+++ b/src/gallium/drivers/llvmpipe/lp_draw_arrays.c
@@ -104,7 +104,7 @@ llvmpipe_draw_vbo(struct pipe_context *pipe, const struct pipe_draw_info *info)
       }
    }
    draw_set_mapped_so_targets(draw, lp->num_so_targets,
-                              lp->so_targets);
+                              lp->so_targets, lp->so_append_bitmask);
 
    llvmpipe_prepare_vertex_sampling(lp,
                                     lp->num_sampler_views[PIPE_SHADER_VERTEX],
@@ -134,7 +134,7 @@ llvmpipe_draw_vbo(struct pipe_context *pipe, const struct pipe_draw_info *info)
    if (mapped_indices) {
       draw_set_indexes(draw, NULL, 0, 0);
    }
-   draw_set_mapped_so_targets(draw, 0, NULL);
+   draw_set_mapped_so_targets(draw, 0, NULL, 0);
 
    if (lp->gs && !lp->gs->shader.tokens) {
       /* we have attached stream output to the vs for rendering,
diff --git a/src/gallium/drivers/llvmpipe/lp_state_so.c b/src/gallium/drivers/llvmpipe/lp_state_so.c
index fa58f79c9c1..c20ff26639d 100644
--- a/src/gallium/drivers/llvmpipe/lp_state_so.c
+++ b/src/gallium/drivers/llvmpipe/lp_state_so.c
@@ -70,17 +70,13 @@ llvmpipe_set_so_targets(struct pipe_context *pipe,
    int i;
    for (i = 0; i < num_targets; i++) {
       pipe_so_target_reference((struct pipe_stream_output_target **)&llvmpipe->so_targets[i], targets[i]);
-      /* if we're not appending then lets reset the internal
-         data of our so target */
-      if (!(append_bitmask & (1 << i)) && llvmpipe->so_targets[i]) {
-         llvmpipe->so_targets[i]->internal_offset = 0;
-         llvmpipe->so_targets[i]->emitted_vertices = 0;
-      }
    }
 
    for (; i < llvmpipe->num_so_targets; i++) {
       pipe_so_target_reference((struct pipe_stream_output_target **)&llvmpipe->so_targets[i], NULL);
    }
+
+   llvmpipe->so_append_bitmask = append_bitmask;
    llvmpipe->num_so_targets = num_targets;
 }