gallium: fix off by one rasterpos bug

diff --git a/src/mesa/state_tracker/st_cb_rasterpos.c b/src/mesa/state_tracker/st_cb_rasterpos.c
index 5b0eb60..4d73916 100644 (file)
--- a/src/mesa/state_tracker/st_cb_rasterpos.c
+++ b/src/mesa/state_tracker/st_cb_rasterpos.c
@@ -145,7 +145,7 @@ rastpos_point(struct draw_stage *stage, struct prim_header *prim)
    /* update raster pos */
    pos = prim->v[0]->data[0];
    ctx->Current.RasterPos[0] = pos[0];
-   ctx->Current.RasterPos[1] = height - 1 - pos[1];
+   ctx->Current.RasterPos[1] = height - pos[1]; /* invert Y */
    ctx->Current.RasterPos[2] = pos[2];
    ctx->Current.RasterPos[3] = pos[3];