geometry shaders: make gs work with changable primitives and variable number of vertices

[mesa.git] / src / gallium / auxiliary / draw / draw_pt_varray.c

diff --git a/src/gallium/auxiliary/draw/draw_pt_varray.c b/src/gallium/auxiliary/draw/draw_pt_varray.c
index c15afe65f1aa5147bcb05ab1447e5189c6c360bb..5ea833032f322da20762a4da5988a6b36f458711 100644 (file)
--- a/src/gallium/auxiliary/draw/draw_pt_varray.c
+++ b/src/gallium/auxiliary/draw/draw_pt_varray.c
@@ -67,7 +67,7 @@ static void varray_line_loop_segment(struct varray_frontend *varray,
                                      unsigned segment_count,
                                      boolean end )
 {
-   assert(segment_count+1 < varray->fetch_max);
+   assert(segment_count < varray->fetch_max);
    if (segment_count >= 1) {
       unsigned nr = 0, i;
 
@@ -77,7 +77,7 @@ static void varray_line_loop_segment(struct varray_frontend *varray,
       if (end) 
          varray->fetch_elts[nr++] = start;
 
-      assert(nr < FETCH_MAX);
+      assert(nr <= FETCH_MAX);
 
       varray->middle->run(varray->middle, 
                           varray->fetch_elts,
@@ -94,7 +94,7 @@ static void varray_fan_segment(struct varray_frontend *varray,
                                unsigned segment_start,
                                unsigned segment_count )
 {
-   assert(segment_count+1 < varray->fetch_max);
+   assert(segment_count < varray->fetch_max);
    if (segment_count >= 2) {
       unsigned nr = 0, i;
 
@@ -104,7 +104,7 @@ static void varray_fan_segment(struct varray_frontend *varray,
       for (i = 0 ; i < segment_count; i++) 
          varray->fetch_elts[nr++] = start + segment_start + i;
 
-      assert(nr < FETCH_MAX);
+      assert(nr <= FETCH_MAX);
 
       varray->middle->run(varray->middle, 
                           varray->fetch_elts,
@@ -136,7 +136,8 @@ static unsigned decompose_prim[PIPE_PRIM_POLYGON + 1] = {
 
 
 static void varray_prepare(struct draw_pt_front_end *frontend,
-                           unsigned prim,
+                           unsigned in_prim,
+                           unsigned out_prim,
                            struct draw_pt_middle_end *middle,
                            unsigned opt)
 {
@@ -144,11 +145,12 @@ static void varray_prepare(struct draw_pt_front_end *frontend,
 
    varray->base.run = varray_run;
 
-   varray->input_prim = prim;
-   varray->output_prim = decompose_prim[prim];
+   varray->input_prim = in_prim;
+   varray->output_prim = decompose_prim[out_prim];
 
    varray->middle = middle;
-   middle->prepare(middle, varray->output_prim, opt, &varray->driver_fetch_max );
+   middle->prepare(middle, varray->input_prim,
+                   varray->output_prim, opt, &varray->driver_fetch_max );
 
    /* check that the max is even */
    assert((varray->driver_fetch_max & 1) == 0);