softpipe: use provoking vertex for layer

Same as for llvmpipe, albeit softpipe only really handles multiple layers,
not multiple viewports/scissors.

Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Jose Fonseca <jfonseca@vmware.com>

diff --git a/src/gallium/drivers/softpipe/sp_setup.c b/src/gallium/drivers/softpipe/sp_setup.c
index ff3cb9f..973803e 100644 (file)
--- a/src/gallium/drivers/softpipe/sp_setup.c
+++ b/src/gallium/drivers/softpipe/sp_setup.c
@@ -840,7 +840,7 @@ sp_setup_tri(struct setup_context *setup,
    setup->span.right[1] = 0;
    /*   setup->span.z_mode = tri_z_mode( setup->ctx ); */
    if (setup->softpipe->layer_slot > 0) {
-      layer = *(unsigned *)v1[setup->softpipe->layer_slot];
+      layer = *(unsigned *)setup->vprovoke[setup->softpipe->layer_slot];
       layer = MIN2(layer, setup->max_layer);
    }
    setup->quad[0].input.layer = layer;
@@ -1127,7 +1127,7 @@ sp_setup_line(struct setup_context *setup,
    setup->quad[0].input.x0 = setup->quad[0].input.y0 = -1;
    setup->quad[0].inout.mask = 0x0;
    if (setup->softpipe->layer_slot > 0) {
-      layer = *(unsigned *)v1[setup->softpipe->layer_slot];
+      layer = *(unsigned *)setup->vprovoke[setup->softpipe->layer_slot];
       layer = MIN2(layer, setup->max_layer);
    }
    setup->quad[0].input.layer = layer;