gallium: interface changes necessary to implement transform feedback (v5)

[mesa.git] / src / gallium / drivers / softpipe / sp_state_so.c

diff --git a/src/gallium/drivers/softpipe/sp_state_so.c b/src/gallium/drivers/softpipe/sp_state_so.c
index 8bd20cd2acaf10e3dd2e3f9cec1714b3232718a6..31ef38412948f16e16ace1b4821ceca842df361e 100644 (file)
--- a/src/gallium/drivers/softpipe/sp_state_so.c
+++ b/src/gallium/drivers/softpipe/sp_state_so.c
@@ -34,9 +34,9 @@
 #include "draw/draw_context.h"
 
 
-void *
+static void *
 softpipe_create_stream_output_state(struct pipe_context *pipe,
-                                    const struct pipe_stream_output_state *templ)
+                                    const struct pipe_stream_output_info *templ)
 {
    struct sp_so_state *so;
    so = (struct sp_so_state *) CALLOC_STRUCT(sp_so_state);
@@ -44,20 +44,14 @@ softpipe_create_stream_output_state(struct pipe_context *pipe,
    if (so) {
       so->base.num_outputs = templ->num_outputs;
       so->base.stride = templ->stride;
-      memcpy(so->base.output_buffer,
-             templ->output_buffer,
-             sizeof(int) * templ->num_outputs);
-      memcpy(so->base.register_index,
-             templ->register_index,
-             sizeof(int) * templ->num_outputs);
-      memcpy(so->base.register_mask,
-             templ->register_mask,
-             sizeof(ubyte) * templ->num_outputs);
+      memcpy(so->base.output, templ->output,
+             templ->num_outputs * sizeof(templ->output[0]));
    }
    return so;
 }
 
-void
+
+static void
 softpipe_bind_stream_output_state(struct pipe_context *pipe,
                                   void *so)
 {
@@ -72,13 +66,15 @@ softpipe_bind_stream_output_state(struct pipe_context *pipe,
       draw_set_so_state(softpipe->draw, &sp_so->base);
 }
 
-void
+
+static void
 softpipe_delete_stream_output_state(struct pipe_context *pipe, void *so)
 {
    FREE( so );
 }
 
-void
+
+static void
 softpipe_set_stream_output_buffers(struct pipe_context *pipe,
                                    struct pipe_resource **buffers,
                                    int *offsets,
@@ -89,6 +85,8 @@ softpipe_set_stream_output_buffers(struct pipe_context *pipe,
    void *map_buffers[PIPE_MAX_SO_BUFFERS];
 
    assert(num_buffers <= PIPE_MAX_SO_BUFFERS);
+   if (num_buffers > PIPE_MAX_SO_BUFFERS)
+      num_buffers = PIPE_MAX_SO_BUFFERS;
 
    softpipe->dirty |= SP_NEW_SO_BUFFERS;
 
@@ -96,6 +94,13 @@ softpipe_set_stream_output_buffers(struct pipe_context *pipe,
       void *mapped;
       struct softpipe_resource *res = softpipe_resource(buffers[i]);
 
+      if (!res) {
+         /* the whole call is invalid, bail out */
+         softpipe->so_target.num_buffers = 0;
+         draw_set_mapped_so_buffers(softpipe->draw, 0, 0);
+         return;
+      }
+
       softpipe->so_target.buffer[i] = res;
       softpipe->so_target.offset[i] = offsets[i];
       softpipe->so_target.so_count[i] = 0;
@@ -113,3 +118,23 @@ softpipe_set_stream_output_buffers(struct pipe_context *pipe,
 
    draw_set_mapped_so_buffers(softpipe->draw, map_buffers, num_buffers);
 }
+
+
+
+void
+softpipe_init_streamout_funcs(struct pipe_context *pipe)
+{
+#if 0
+   pipe->create_stream_output_state = softpipe_create_stream_output_state;
+   pipe->bind_stream_output_state = softpipe_bind_stream_output_state;
+   pipe->delete_stream_output_state = softpipe_delete_stream_output_state;
+
+   pipe->set_stream_output_buffers = softpipe_set_stream_output_buffers;
+#else
+   (void) softpipe_create_stream_output_state;
+   (void) softpipe_bind_stream_output_state;
+   (void) softpipe_delete_stream_output_state;
+   (void) softpipe_set_stream_output_buffers;
+#endif
+}
+