draw: don't assume vertex position is in data[0]

1 files changed, 5 insertions, 4 deletions

diff --git a/src/gallium/auxiliary/draw/draw_pipe_wide_line.c b/src/gallium/auxiliary/draw/draw_pipe_wide_line.c
index 878c9c7169..29649f5787 100644
--- a/src/gallium/auxiliary/draw/draw_pipe_wide_line.c
+++ b/src/gallium/auxiliary/draw/draw_pipe_wide_line.c
@@ -58,6 +58,7 @@ static void wideline_line( struct draw_stage *stage,
                            struct prim_header *header )
 {
    /*const struct wideline_stage *wide = wideline_stage(stage);*/
+   const unsigned pos = stage->draw->vs.position_output;
    const float half_width = 0.5f * stage->draw->rasterizer->line_width;
 
    struct prim_header tri;
@@ -67,10 +68,10 @@ static void wideline_line( struct draw_stage *stage,
    struct vertex_header *v2 = dup_vert(stage, header->v[1], 2);
    struct vertex_header *v3 = dup_vert(stage, header->v[1], 3);
 
-   float *pos0 = v0->data[0];
-   float *pos1 = v1->data[0];
-   float *pos2 = v2->data[0];
-   float *pos3 = v3->data[0];
+   float *pos0 = v0->data[pos];
+   float *pos1 = v1->data[pos];
+   float *pos2 = v2->data[pos];
+   float *pos3 = v3->data[pos];
 
    const float dx = FABSF(pos0[0] - pos2[0]);
    const float dy = FABSF(pos0[1] - pos2[1]);