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Diffstat (limited to 'src/mesa/vbo/vbo_exec_draw.c')
-rw-r--r--src/mesa/vbo/vbo_exec_draw.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/src/mesa/vbo/vbo_exec_draw.c b/src/mesa/vbo/vbo_exec_draw.c
index c85e142a5a7..6f8d1f8eb07 100644
--- a/src/mesa/vbo/vbo_exec_draw.c
+++ b/src/mesa/vbo/vbo_exec_draw.c
@@ -250,7 +250,10 @@ static void vbo_exec_vtx_unmap( struct vbo_exec_context *exec )
exec->vtx.buffer_used += (exec->vtx.buffer_ptr -
exec->vtx.buffer_map) * sizeof(float);
-
+
+ assert(exec->vtx.buffer_used <= VBO_VERT_BUFFER_SIZE);
+ assert(exec->vtx.buffer_ptr != NULL);
+
ctx->Driver.UnmapBuffer(ctx, target, exec->vtx.bufferobj);
exec->vtx.buffer_map = NULL;
exec->vtx.buffer_ptr = NULL;
@@ -271,6 +274,7 @@ void vbo_exec_vtx_map( struct vbo_exec_context *exec )
if (exec->vtx.buffer_map != NULL) {
assert(0);
exec->vtx.buffer_map = NULL;
+ exec->vtx.buffer_ptr = NULL;
}
if (VBO_VERT_BUFFER_SIZE > exec->vtx.buffer_used + 1024 &&
@@ -287,6 +291,7 @@ void vbo_exec_vtx_map( struct vbo_exec_context *exec )
GL_MAP_UNSYNCHRONIZED_BIT |
MESA_MAP_NOWAIT_BIT),
exec->vtx.bufferobj);
+ exec->vtx.buffer_ptr = exec->vtx.buffer_map;
}
if (!exec->vtx.buffer_map) {
@@ -298,6 +303,7 @@ void vbo_exec_vtx_map( struct vbo_exec_context *exec )
exec->vtx.buffer_map =
(GLfloat *)ctx->Driver.MapBuffer(ctx, target, access, exec->vtx.bufferobj);
+ exec->vtx.buffer_ptr = exec->vtx.buffer_map;
}
if (0) _mesa_printf("map %d..\n", exec->vtx.buffer_used);