gallium: added an (int) cast in setup_bitmap_vertex_data() to fix a signed/unsigned arithmetic problem

Negative values became very large uints.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/mesa/state_tracker/st_cb_bitmap.c b/src/mesa/state_tracker/st_cb_bitmap.c
index 464e22d576..b600b92dc6 100644
--- a/src/mesa/state_tracker/st_cb_bitmap.c
+++ b/src/mesa/state_tracker/st_cb_bitmap.c
@@ -351,7 +351,7 @@ setup_bitmap_vertex_data(struct st_context *st,
    const GLboolean invert = (st_fb_orientation(fb) == Y_0_TOP);
    const GLfloat x0 = x;
    const GLfloat x1 = x + width;
-   const GLfloat y0 = invert ? (fb->Height - y - height) : y;
+   const GLfloat y0 = invert ? ((int) fb->Height - y - height) : y;
    const GLfloat y1 = invert ? (y0 + height) : y + height;
    const GLfloat bias = st->bitmap_texcoord_bias;
    const GLfloat xBias = bias / (x1-x0);