s/Tungsten Graphics/VMware/
[mesa.git] / src / gallium / drivers / softpipe / sp_prim_vbuf.c
index a58bc107c0a72f378828dda019745e45d5018e71..18eca611669a354aec73e938c97f0ea05d656f26 100644 (file)
@@ -1,6 +1,6 @@
 /**************************************************************************
  *
- * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * Copyright 2007 VMware, Inc.
  * All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
@@ -18,7 +18,7 @@
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
- * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
@@ -132,7 +132,7 @@ sp_vbuf_unmap_vertices(struct vbuf_render *vbr,
 }
 
 
-static boolean
+static void
 sp_vbuf_set_primitive(struct vbuf_render *vbr, unsigned prim)
 {
    struct softpipe_vbuf_render *cvbr = softpipe_vbuf_render(vbr);
@@ -142,7 +142,6 @@ sp_vbuf_set_primitive(struct vbuf_render *vbr, unsigned prim)
 
    cvbr->softpipe->reduced_prim = u_reduced_prim(prim);
    cvbr->prim = prim;
-   return TRUE;
 }
 
 
@@ -158,26 +157,27 @@ static INLINE cptrf4 get_vert( const void *vertex_buffer,
  * draw elements / indexed primitives
  */
 static void
-sp_vbuf_draw(struct vbuf_render *vbr, const ushort *indices, uint nr)
+sp_vbuf_draw_elements(struct vbuf_render *vbr, const ushort *indices, uint nr)
 {
    struct softpipe_vbuf_render *cvbr = softpipe_vbuf_render(vbr);
    struct softpipe_context *softpipe = cvbr->softpipe;
    const unsigned stride = softpipe->vertex_info_vbuf.size * sizeof(float);
    const void *vertex_buffer = cvbr->vertex_buffer;
-   struct setup_context *setup_ctx = cvbr->setup;
+   struct setup_context *setup = cvbr->setup;
+   const boolean flatshade_first = softpipe->rasterizer->flatshade_first;
    unsigned i;
 
    switch (cvbr->prim) {
    case PIPE_PRIM_POINTS:
       for (i = 0; i < nr; i++) {
-         sp_setup_point( setup_ctx,
+         sp_setup_point( setup,
                          get_vert(vertex_buffer, indices[i-0], stride) );
       }
       break;
 
    case PIPE_PRIM_LINES:
       for (i = 1; i < nr; i += 2) {
-         sp_setup_line( setup_ctx,
+         sp_setup_line( setup,
                         get_vert(vertex_buffer, indices[i-1], stride),
                         get_vert(vertex_buffer, indices[i-0], stride) );
       }
@@ -185,7 +185,7 @@ sp_vbuf_draw(struct vbuf_render *vbr, const ushort *indices, uint nr)
 
    case PIPE_PRIM_LINE_STRIP:
       for (i = 1; i < nr; i ++) {
-         sp_setup_line( setup_ctx,
+         sp_setup_line( setup,
                         get_vert(vertex_buffer, indices[i-1], stride),
                         get_vert(vertex_buffer, indices[i-0], stride) );
       }
@@ -193,48 +193,41 @@ sp_vbuf_draw(struct vbuf_render *vbr, const ushort *indices, uint nr)
 
    case PIPE_PRIM_LINE_LOOP:
       for (i = 1; i < nr; i ++) {
-         sp_setup_line( setup_ctx,
+         sp_setup_line( setup,
                         get_vert(vertex_buffer, indices[i-1], stride),
                         get_vert(vertex_buffer, indices[i-0], stride) );
       }
       if (nr) {
-         sp_setup_line( setup_ctx,
+         sp_setup_line( setup,
                         get_vert(vertex_buffer, indices[nr-1], stride),
                         get_vert(vertex_buffer, indices[0], stride) );
       }
       break;
 
    case PIPE_PRIM_TRIANGLES:
-      if (softpipe->rasterizer->flatshade_first) {
-         for (i = 2; i < nr; i += 3) {
-            sp_setup_tri( setup_ctx,
-                          get_vert(vertex_buffer, indices[i-1], stride),
-                          get_vert(vertex_buffer, indices[i-0], stride),
-                          get_vert(vertex_buffer, indices[i-2], stride) );
-         }
-      }
-      else {
-         for (i = 2; i < nr; i += 3) {
-            sp_setup_tri( setup_ctx,
-                          get_vert(vertex_buffer, indices[i-2], stride),
-                          get_vert(vertex_buffer, indices[i-1], stride),
-                          get_vert(vertex_buffer, indices[i-0], stride) );
-         }
+      for (i = 2; i < nr; i += 3) {
+         sp_setup_tri( setup,
+                       get_vert(vertex_buffer, indices[i-2], stride),
+                       get_vert(vertex_buffer, indices[i-1], stride),
+                       get_vert(vertex_buffer, indices[i-0], stride) );
       }
       break;
 
    case PIPE_PRIM_TRIANGLE_STRIP:
-      if (softpipe->rasterizer->flatshade_first) {
+      if (flatshade_first) {
          for (i = 2; i < nr; i += 1) {
-            sp_setup_tri( setup_ctx,
+            /* emit first triangle vertex as first triangle vertex */
+            sp_setup_tri( setup,
+                          get_vert(vertex_buffer, indices[i-2], stride),
                           get_vert(vertex_buffer, indices[i+(i&1)-1], stride),
-                          get_vert(vertex_buffer, indices[i-(i&1)], stride),
-                          get_vert(vertex_buffer, indices[i-2], stride) );
+                          get_vert(vertex_buffer, indices[i-(i&1)], stride) );
+
          }
       }
       else {
          for (i = 2; i < nr; i += 1) {
-            sp_setup_tri( setup_ctx,
+            /* emit last triangle vertex as last triangle vertex */
+            sp_setup_tri( setup,
                           get_vert(vertex_buffer, indices[i+(i&1)-2], stride),
                           get_vert(vertex_buffer, indices[i-(i&1)-1], stride),
                           get_vert(vertex_buffer, indices[i-0], stride) );
@@ -243,17 +236,19 @@ sp_vbuf_draw(struct vbuf_render *vbr, const ushort *indices, uint nr)
       break;
 
    case PIPE_PRIM_TRIANGLE_FAN:
-      if (softpipe->rasterizer->flatshade_first) {
+      if (flatshade_first) {
          for (i = 2; i < nr; i += 1) {
-            sp_setup_tri( setup_ctx,
+            /* emit first non-spoke vertex as first vertex */
+            sp_setup_tri( setup,
+                          get_vert(vertex_buffer, indices[i-1], stride),
                           get_vert(vertex_buffer, indices[i-0], stride),
-                          get_vert(vertex_buffer, indices[0], stride),
-                          get_vert(vertex_buffer, indices[i-1], stride) );
+                          get_vert(vertex_buffer, indices[0], stride) );
          }
       }
       else {
          for (i = 2; i < nr; i += 1) {
-            sp_setup_tri( setup_ctx,
+            /* emit last non-spoke vertex as last vertex */
+            sp_setup_tri( setup,
                           get_vert(vertex_buffer, indices[0], stride),
                           get_vert(vertex_buffer, indices[i-1], stride),
                           get_vert(vertex_buffer, indices[i-0], stride) );
@@ -262,43 +257,88 @@ sp_vbuf_draw(struct vbuf_render *vbr, const ushort *indices, uint nr)
       break;
 
    case PIPE_PRIM_QUADS:
-      for (i = 3; i < nr; i += 4) {
-         sp_setup_tri( setup_ctx,
-                       get_vert(vertex_buffer, indices[i-3], stride),
-                       get_vert(vertex_buffer, indices[i-2], stride),
-                       get_vert(vertex_buffer, indices[i-0], stride) );
+      /* GL quads don't follow provoking vertex convention */
+      if (flatshade_first) { 
+         /* emit last quad vertex as first triangle vertex */
+         for (i = 3; i < nr; i += 4) {
+            sp_setup_tri( setup,
+                          get_vert(vertex_buffer, indices[i-0], stride),
+                          get_vert(vertex_buffer, indices[i-3], stride),
+                          get_vert(vertex_buffer, indices[i-2], stride) );
 
-         sp_setup_tri( setup_ctx,
-                       get_vert(vertex_buffer, indices[i-2], stride),
-                       get_vert(vertex_buffer, indices[i-1], stride),
-                       get_vert(vertex_buffer, indices[i-0], stride) );
+            sp_setup_tri( setup,
+                          get_vert(vertex_buffer, indices[i-0], stride),
+                          get_vert(vertex_buffer, indices[i-2], stride),
+                          get_vert(vertex_buffer, indices[i-1], stride) );
+         }
+      }
+      else {
+         /* emit last quad vertex as last triangle vertex */
+         for (i = 3; i < nr; i += 4) {
+            sp_setup_tri( setup,
+                          get_vert(vertex_buffer, indices[i-3], stride),
+                          get_vert(vertex_buffer, indices[i-2], stride),
+                          get_vert(vertex_buffer, indices[i-0], stride) );
+
+            sp_setup_tri( setup,
+                          get_vert(vertex_buffer, indices[i-2], stride),
+                          get_vert(vertex_buffer, indices[i-1], stride),
+                          get_vert(vertex_buffer, indices[i-0], stride) );
+         }
       }
       break;
 
    case PIPE_PRIM_QUAD_STRIP:
-      for (i = 3; i < nr; i += 2) {
-         sp_setup_tri( setup_ctx,
-                       get_vert(vertex_buffer, indices[i-3], stride),
-                       get_vert(vertex_buffer, indices[i-2], stride),
-                       get_vert(vertex_buffer, indices[i-0], stride) );
-         sp_setup_tri( setup_ctx,
-                       get_vert(vertex_buffer, indices[i-1], stride),
-                       get_vert(vertex_buffer, indices[i-3], stride),
-                       get_vert(vertex_buffer, indices[i-0], stride) );
+      /* GL quad strips don't follow provoking vertex convention */
+      if (flatshade_first) { 
+         /* emit last quad vertex as first triangle vertex */
+         for (i = 3; i < nr; i += 2) {
+            sp_setup_tri( setup,
+                          get_vert(vertex_buffer, indices[i-0], stride),
+                          get_vert(vertex_buffer, indices[i-3], stride),
+                          get_vert(vertex_buffer, indices[i-2], stride) );
+            sp_setup_tri( setup,
+                          get_vert(vertex_buffer, indices[i-0], stride),
+                          get_vert(vertex_buffer, indices[i-1], stride),
+                          get_vert(vertex_buffer, indices[i-3], stride) );
+         }
+      }
+      else {
+         /* emit last quad vertex as last triangle vertex */
+         for (i = 3; i < nr; i += 2) {
+            sp_setup_tri( setup,
+                          get_vert(vertex_buffer, indices[i-3], stride),
+                          get_vert(vertex_buffer, indices[i-2], stride),
+                          get_vert(vertex_buffer, indices[i-0], stride) );
+            sp_setup_tri( setup,
+                          get_vert(vertex_buffer, indices[i-1], stride),
+                          get_vert(vertex_buffer, indices[i-3], stride),
+                          get_vert(vertex_buffer, indices[i-0], stride) );
+         }
       }
       break;
 
    case PIPE_PRIM_POLYGON:
       /* Almost same as tri fan but the _first_ vertex specifies the flat
-       * shading color.  Note that the first polygon vertex is passed as
-       * the last triangle vertex here.
-       * flatshade_first state makes no difference.
+       * shading color.
        */
-      for (i = 2; i < nr; i += 1) {
-         sp_setup_tri( setup_ctx,
-                       get_vert(vertex_buffer, indices[i-0], stride),
-                       get_vert(vertex_buffer, indices[i-1], stride),
-                       get_vert(vertex_buffer, indices[0], stride) );
+      if (flatshade_first) { 
+         /* emit first polygon  vertex as first triangle vertex */
+         for (i = 2; i < nr; i += 1) {
+            sp_setup_tri( setup,
+                          get_vert(vertex_buffer, indices[0], stride),
+                          get_vert(vertex_buffer, indices[i-1], stride),
+                          get_vert(vertex_buffer, indices[i-0], stride) );
+         }
+      }
+      else {
+         /* emit first polygon  vertex as last triangle vertex */
+         for (i = 2; i < nr; i += 1) {
+            sp_setup_tri( setup,
+                          get_vert(vertex_buffer, indices[i-1], stride),
+                          get_vert(vertex_buffer, indices[i-0], stride),
+                          get_vert(vertex_buffer, indices[0], stride) );
+         }
       }
       break;
 
@@ -317,80 +357,98 @@ sp_vbuf_draw_arrays(struct vbuf_render *vbr, uint start, uint nr)
 {
    struct softpipe_vbuf_render *cvbr = softpipe_vbuf_render(vbr);
    struct softpipe_context *softpipe = cvbr->softpipe;
-   struct setup_context *setup_ctx = cvbr->setup;
+   struct setup_context *setup = cvbr->setup;
    const unsigned stride = softpipe->vertex_info_vbuf.size * sizeof(float);
    const void *vertex_buffer =
       (void *) get_vert(cvbr->vertex_buffer, start, stride);
+   const boolean flatshade_first = softpipe->rasterizer->flatshade_first;
    unsigned i;
 
    switch (cvbr->prim) {
    case PIPE_PRIM_POINTS:
       for (i = 0; i < nr; i++) {
-         sp_setup_point( setup_ctx,
+         sp_setup_point( setup,
                          get_vert(vertex_buffer, i-0, stride) );
       }
       break;
 
    case PIPE_PRIM_LINES:
       for (i = 1; i < nr; i += 2) {
-         sp_setup_line( setup_ctx,
+         sp_setup_line( setup,
                         get_vert(vertex_buffer, i-1, stride),
                         get_vert(vertex_buffer, i-0, stride) );
       }
       break;
 
+   case PIPE_PRIM_LINES_ADJACENCY:
+      for (i = 3; i < nr; i += 4) {
+         sp_setup_line( setup,
+                        get_vert(vertex_buffer, i-2, stride),
+                        get_vert(vertex_buffer, i-1, stride) );
+      }
+      break;
+
    case PIPE_PRIM_LINE_STRIP:
       for (i = 1; i < nr; i ++) {
-         sp_setup_line( setup_ctx,
+         sp_setup_line( setup,
                      get_vert(vertex_buffer, i-1, stride),
                      get_vert(vertex_buffer, i-0, stride) );
       }
       break;
 
+   case PIPE_PRIM_LINE_STRIP_ADJACENCY:
+      for (i = 3; i < nr; i++) {
+         sp_setup_line( setup,
+                     get_vert(vertex_buffer, i-2, stride),
+                     get_vert(vertex_buffer, i-1, stride) );
+      }
+      break;
+
    case PIPE_PRIM_LINE_LOOP:
       for (i = 1; i < nr; i ++) {
-         sp_setup_line( setup_ctx,
+         sp_setup_line( setup,
                         get_vert(vertex_buffer, i-1, stride),
                         get_vert(vertex_buffer, i-0, stride) );
       }
       if (nr) {
-         sp_setup_line( setup_ctx,
+         sp_setup_line( setup,
                         get_vert(vertex_buffer, nr-1, stride),
                         get_vert(vertex_buffer, 0, stride) );
       }
       break;
 
    case PIPE_PRIM_TRIANGLES:
-      if (softpipe->rasterizer->flatshade_first) {
-         for (i = 2; i < nr; i += 3) {
-            sp_setup_tri( setup_ctx,
-                          get_vert(vertex_buffer, i-1, stride),
-                          get_vert(vertex_buffer, i-0, stride),
-                          get_vert(vertex_buffer, i-2, stride) );
-         }
+      for (i = 2; i < nr; i += 3) {
+         sp_setup_tri( setup,
+                       get_vert(vertex_buffer, i-2, stride),
+                       get_vert(vertex_buffer, i-1, stride),
+                       get_vert(vertex_buffer, i-0, stride) );
       }
-      else {
-         for (i = 2; i < nr; i += 3) {
-            sp_setup_tri( setup_ctx,
-                          get_vert(vertex_buffer, i-2, stride),
-                          get_vert(vertex_buffer, i-1, stride),
-                          get_vert(vertex_buffer, i-0, stride) );
-         }
+      break;
+
+   case PIPE_PRIM_TRIANGLES_ADJACENCY:
+      for (i = 5; i < nr; i += 6) {
+         sp_setup_tri( setup,
+                       get_vert(vertex_buffer, i-5, stride),
+                       get_vert(vertex_buffer, i-3, stride),
+                       get_vert(vertex_buffer, i-1, stride) );
       }
       break;
 
    case PIPE_PRIM_TRIANGLE_STRIP:
-      if (softpipe->rasterizer->flatshade_first) {
+      if (flatshade_first) {
          for (i = 2; i < nr; i++) {
-            sp_setup_tri( setup_ctx,
+            /* emit first triangle vertex as first triangle vertex */
+            sp_setup_tri( setup,
+                          get_vert(vertex_buffer, i-2, stride),
                           get_vert(vertex_buffer, i+(i&1)-1, stride),
-                          get_vert(vertex_buffer, i-(i&1), stride),
-                          get_vert(vertex_buffer, i-2, stride) );
+                          get_vert(vertex_buffer, i-(i&1), stride) );
          }
       }
       else {
          for (i = 2; i < nr; i++) {
-            sp_setup_tri( setup_ctx,
+            /* emit last triangle vertex as last triangle vertex */
+            sp_setup_tri( setup,
                           get_vert(vertex_buffer, i+(i&1)-2, stride),
                           get_vert(vertex_buffer, i-(i&1)-1, stride),
                           get_vert(vertex_buffer, i-0, stride) );
@@ -398,18 +456,41 @@ sp_vbuf_draw_arrays(struct vbuf_render *vbr, uint start, uint nr)
       }
       break;
 
+   case PIPE_PRIM_TRIANGLE_STRIP_ADJACENCY:
+      if (flatshade_first) {
+         for (i = 5; i < nr; i += 2) {
+            /* emit first triangle vertex as first triangle vertex */
+            sp_setup_tri( setup,
+                          get_vert(vertex_buffer, i-5, stride),
+                          get_vert(vertex_buffer, i+(i&1)*2-3, stride),
+                          get_vert(vertex_buffer, i-(i&1)*2-1, stride) );
+         }
+      }
+      else {
+         for (i = 5; i < nr; i += 2) {
+            /* emit last triangle vertex as last triangle vertex */
+            sp_setup_tri( setup,
+                          get_vert(vertex_buffer, i+(i&1)*2-5, stride),
+                          get_vert(vertex_buffer, i-(i&1)*2-3, stride),
+                          get_vert(vertex_buffer, i-1, stride) );
+         }
+      }
+      break;
+
    case PIPE_PRIM_TRIANGLE_FAN:
-      if (softpipe->rasterizer->flatshade_first) {
+      if (flatshade_first) {
          for (i = 2; i < nr; i += 1) {
-            sp_setup_tri( setup_ctx,
+            /* emit first non-spoke vertex as first vertex */
+            sp_setup_tri( setup,
+                          get_vert(vertex_buffer, i-1, stride),
                           get_vert(vertex_buffer, i-0, stride),
-                          get_vert(vertex_buffer, 0, stride),
-                          get_vert(vertex_buffer, i-1, stride) );
+                          get_vert(vertex_buffer, 0, stride)  );
          }
       }
       else {
          for (i = 2; i < nr; i += 1) {
-            sp_setup_tri( setup_ctx,
+            /* emit last non-spoke vertex as last vertex */
+            sp_setup_tri( setup,
                           get_vert(vertex_buffer, 0, stride),
                           get_vert(vertex_buffer, i-1, stride),
                           get_vert(vertex_buffer, i-0, stride) );
@@ -418,42 +499,86 @@ sp_vbuf_draw_arrays(struct vbuf_render *vbr, uint start, uint nr)
       break;
 
    case PIPE_PRIM_QUADS:
-      for (i = 3; i < nr; i += 4) {
-         sp_setup_tri( setup_ctx,
-                       get_vert(vertex_buffer, i-3, stride),
-                       get_vert(vertex_buffer, i-2, stride),
-                       get_vert(vertex_buffer, i-0, stride) );
-         sp_setup_tri( setup_ctx,
-                       get_vert(vertex_buffer, i-2, stride),
-                       get_vert(vertex_buffer, i-1, stride),
-                       get_vert(vertex_buffer, i-0, stride) );
+      /* GL quads don't follow provoking vertex convention */
+      if (flatshade_first) { 
+         /* emit last quad vertex as first triangle vertex */
+         for (i = 3; i < nr; i += 4) {
+            sp_setup_tri( setup,
+                          get_vert(vertex_buffer, i-0, stride),
+                          get_vert(vertex_buffer, i-3, stride),
+                          get_vert(vertex_buffer, i-2, stride) );
+            sp_setup_tri( setup,
+                          get_vert(vertex_buffer, i-0, stride),
+                          get_vert(vertex_buffer, i-2, stride),
+                          get_vert(vertex_buffer, i-1, stride) );
+         }
+      }
+      else {
+         /* emit last quad vertex as last triangle vertex */
+         for (i = 3; i < nr; i += 4) {
+            sp_setup_tri( setup,
+                          get_vert(vertex_buffer, i-3, stride),
+                          get_vert(vertex_buffer, i-2, stride),
+                          get_vert(vertex_buffer, i-0, stride) );
+            sp_setup_tri( setup,
+                          get_vert(vertex_buffer, i-2, stride),
+                          get_vert(vertex_buffer, i-1, stride),
+                          get_vert(vertex_buffer, i-0, stride) );
+         }
       }
       break;
 
    case PIPE_PRIM_QUAD_STRIP:
-      for (i = 3; i < nr; i += 2) {
-         sp_setup_tri( setup_ctx,
-                       get_vert(vertex_buffer, i-3, stride),
-                       get_vert(vertex_buffer, i-2, stride),
-                       get_vert(vertex_buffer, i-0, stride) );
-         sp_setup_tri( setup_ctx,
-                       get_vert(vertex_buffer, i-1, stride),
-                       get_vert(vertex_buffer, i-3, stride),
-                       get_vert(vertex_buffer, i-0, stride) );
+      /* GL quad strips don't follow provoking vertex convention */
+      if (flatshade_first) { 
+         /* emit last quad vertex as first triangle vertex */
+         for (i = 3; i < nr; i += 2) {
+            sp_setup_tri( setup,
+                          get_vert(vertex_buffer, i-0, stride),
+                          get_vert(vertex_buffer, i-3, stride),
+                          get_vert(vertex_buffer, i-2, stride) );
+            sp_setup_tri( setup,
+                          get_vert(vertex_buffer, i-0, stride),
+                          get_vert(vertex_buffer, i-1, stride),
+                          get_vert(vertex_buffer, i-3, stride) );
+         }
+      }
+      else {
+         /* emit last quad vertex as last triangle vertex */
+         for (i = 3; i < nr; i += 2) {
+            sp_setup_tri( setup,
+                          get_vert(vertex_buffer, i-3, stride),
+                          get_vert(vertex_buffer, i-2, stride),
+                          get_vert(vertex_buffer, i-0, stride) );
+            sp_setup_tri( setup,
+                          get_vert(vertex_buffer, i-1, stride),
+                          get_vert(vertex_buffer, i-3, stride),
+                          get_vert(vertex_buffer, i-0, stride) );
+         }
       }
       break;
 
    case PIPE_PRIM_POLYGON:
       /* Almost same as tri fan but the _first_ vertex specifies the flat
-       * shading color.  Note that the first polygon vertex is passed as
-       * the last triangle vertex here.
-       * flatshade_first state makes no difference.
+       * shading color.
        */
-      for (i = 2; i < nr; i += 1) {
-         sp_setup_tri( setup_ctx,
-                       get_vert(vertex_buffer, i-1, stride),
-                       get_vert(vertex_buffer, i-0, stride),
-                       get_vert(vertex_buffer, 0, stride) );
+      if (flatshade_first) { 
+         /* emit first polygon  vertex as first triangle vertex */
+         for (i = 2; i < nr; i += 1) {
+            sp_setup_tri( setup,
+                          get_vert(vertex_buffer, 0, stride),
+                          get_vert(vertex_buffer, i-1, stride),
+                          get_vert(vertex_buffer, i-0, stride) );
+         }
+      }
+      else {
+         /* emit first polygon  vertex as last triangle vertex */
+         for (i = 2; i < nr; i += 1) {
+            sp_setup_tri( setup,
+                          get_vert(vertex_buffer, i-1, stride),
+                          get_vert(vertex_buffer, i-0, stride),
+                          get_vert(vertex_buffer, 0, stride) );
+         }
       }
       break;
 
@@ -462,6 +587,47 @@ sp_vbuf_draw_arrays(struct vbuf_render *vbr, uint start, uint nr)
    }
 }
 
+/*
+ * FIXME: it is unclear if primitives_storage_needed (which is generally
+ * the same as pipe query num_primitives_generated) should increase
+ * if SO is disabled for d3d10, but for GL we definitely need to
+ * increase num_primitives_generated and this is only called for active
+ * SO. If it must not increase for d3d10 need to disambiguate the counters
+ * in the driver and do some work for getting correct values, if it should
+ * increase too should call this from outside streamout code.
+ */
+static void
+sp_vbuf_so_info(struct vbuf_render *vbr, uint primitives, uint prim_generated)
+{
+   struct softpipe_vbuf_render *cvbr = softpipe_vbuf_render(vbr);
+   struct softpipe_context *softpipe = cvbr->softpipe;
+
+   softpipe->so_stats.num_primitives_written += primitives;
+   softpipe->so_stats.primitives_storage_needed += prim_generated;
+}
+
+static void
+sp_vbuf_pipeline_statistics(
+   struct vbuf_render *vbr, 
+   const struct pipe_query_data_pipeline_statistics *stats)
+{
+   struct softpipe_vbuf_render *cvbr = softpipe_vbuf_render(vbr);
+   struct softpipe_context *softpipe = cvbr->softpipe;
+
+   softpipe->pipeline_statistics.ia_vertices +=
+      stats->ia_vertices;
+   softpipe->pipeline_statistics.ia_primitives +=
+      stats->ia_primitives;
+   softpipe->pipeline_statistics.vs_invocations +=
+      stats->vs_invocations;
+   softpipe->pipeline_statistics.gs_invocations +=
+      stats->gs_invocations;
+   softpipe->pipeline_statistics.gs_primitives +=
+      stats->gs_primitives;
+   softpipe->pipeline_statistics.c_invocations +=
+      stats->c_invocations;
+}
+
 
 static void
 sp_vbuf_destroy(struct vbuf_render *vbr)
@@ -492,9 +658,11 @@ sp_create_vbuf_backend(struct softpipe_context *sp)
    cvbr->base.map_vertices = sp_vbuf_map_vertices;
    cvbr->base.unmap_vertices = sp_vbuf_unmap_vertices;
    cvbr->base.set_primitive = sp_vbuf_set_primitive;
-   cvbr->base.draw = sp_vbuf_draw;
+   cvbr->base.draw_elements = sp_vbuf_draw_elements;
    cvbr->base.draw_arrays = sp_vbuf_draw_arrays;
    cvbr->base.release_vertices = sp_vbuf_release_vertices;
+   cvbr->base.set_stream_output_info = sp_vbuf_so_info;
+   cvbr->base.pipeline_statistics = sp_vbuf_pipeline_statistics;
    cvbr->base.destroy = sp_vbuf_destroy;
 
    cvbr->softpipe = sp;