r300g: simplify the immd_is_good_idea function

diff --git a/src/gallium/drivers/r300/r300_render.c b/src/gallium/drivers/r300/r300_render.c
index 7d31ac4..dad6d2f 100644 (file)
--- a/src/gallium/drivers/r300/r300_render.c
+++ b/src/gallium/drivers/r300/r300_render.c
@@ -313,40 +313,16 @@ static boolean r300_prepare_for_rendering(struct r300_context *r300,
 static boolean immd_is_good_idea(struct r300_context *r300,
                                  unsigned count)
 {
-    struct pipe_vertex_element* velem;
-    struct pipe_resource *buf;
-    boolean checked[PIPE_MAX_ATTRIBS] = {0};
-    unsigned vertex_element_count = r300->velems->count;
-    unsigned i, vbi;
-
     if (DBG_ON(r300, DBG_NO_IMMD)) {
         return FALSE;
     }
 
-    if (r300->draw) {
-        return FALSE;
-    }
-
     if (count * r300->velems->vertex_size_dwords > IMMD_DWORDS) {
         return FALSE;
     }
 
-    /* We shouldn't map buffers referenced by CS, busy buffers,
-     * and ones placed in VRAM. */
-    for (i = 0; i < vertex_element_count; i++) {
-        velem = &r300->velems->velem[i];
-        vbi = velem->vertex_buffer_index;
-
-        if (!checked[vbi]) {
-            buf = r300->vbuf_mgr->real_vertex_buffer[vbi].buffer;
-
-            if ((r300_resource(buf)->domain != RADEON_DOMAIN_GTT)) {
-                return FALSE;
-            }
-
-            checked[vbi] = TRUE;
-        }
-    }
+    /* Buffers can only be used for read by r300 (except query buffers, but
+     * those can't be bound by a state tracker as vertex buffers). */
     return TRUE;
 }