softpipe: fix incorrect tri vertex order for PIPE_PRIM_POLYGON rendering
This fixes incorrect front/back-face orientation.
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@ -420,8 +420,8 @@ sp_vbuf_draw_arrays(struct vbuf_render *vbr, uint start, uint nr)
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*/
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for (i = 2; i < nr; i += 1) {
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setup_tri( setup_ctx,
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get_vert(vertex_buffer, i-0, stride),
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get_vert(vertex_buffer, i-1, stride),
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get_vert(vertex_buffer, i-0, stride),
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get_vert(vertex_buffer, 0, stride));
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}
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break;
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