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path: root/src/gallium/auxiliary/draw/draw_pipe_clip.c
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-rw-r--r--src/gallium/auxiliary/draw/draw_pipe_clip.c16
1 files changed, 8 insertions, 8 deletions
diff --git a/src/gallium/auxiliary/draw/draw_pipe_clip.c b/src/gallium/auxiliary/draw/draw_pipe_clip.c
index 77ccddac4ab..fa10f8efca2 100644
--- a/src/gallium/auxiliary/draw/draw_pipe_clip.c
+++ b/src/gallium/auxiliary/draw/draw_pipe_clip.c
@@ -113,6 +113,7 @@ static void interp( const struct clipper *clip,
const struct vertex_header *in )
{
const unsigned nr_attrs = clip->stage.draw->vs.num_vs_outputs;
+ const unsigned pos_attr = clip->stage.draw->vs.position_output;
unsigned j;
/* Vertex header.
@@ -138,18 +139,17 @@ static void interp( const struct clipper *clip,
const float *trans = clip->stage.draw->viewport.translate;
const float oow = 1.0f / pos[3];
- dst->data[0][0] = pos[0] * oow * scale[0] + trans[0];
- dst->data[0][1] = pos[1] * oow * scale[1] + trans[1];
- dst->data[0][2] = pos[2] * oow * scale[2] + trans[2];
- dst->data[0][3] = oow;
+ dst->data[pos_attr][0] = pos[0] * oow * scale[0] + trans[0];
+ dst->data[pos_attr][1] = pos[1] * oow * scale[1] + trans[1];
+ dst->data[pos_attr][2] = pos[2] * oow * scale[2] + trans[2];
+ dst->data[pos_attr][3] = oow;
}
/* Other attributes
- * Note: start at 1 to skip winpos (data[0]) since we just computed
- * it above.
*/
- for (j = 1; j < nr_attrs; j++) {
- interp_attr(dst->data[j], t, in->data[j], out->data[j]);
+ for (j = 0; j < nr_attrs; j++) {
+ if (j != pos_attr)
+ interp_attr(dst->data[j], t, in->data[j], out->data[j]);
}
}