implement linear emition and fetching and plug it in the varray paths

1 files changed, 83 insertions, 5 deletions

diff --git a/src/gallium/auxiliary/draw/draw_pt_fetch_shade_pipeline.c b/src/gallium/auxiliary/draw/draw_pt_fetch_shade_pipeline.c
index 4ec20493c4..b1e08a8f40 100644
--- a/src/gallium/auxiliary/draw/draw_pt_fetch_shade_pipeline.c
+++ b/src/gallium/auxiliary/draw/draw_pt_fetch_shade_pipeline.c
@@ -162,7 +162,7 @@ static void fetch_pipeline_run( struct draw_pt_middle_end *middle,
                          fpme->vertex_size,
                          draw_elts,
                          draw_count );
-   } 
+   }
    else {
       draw_pt_emit( fpme->emit,
 		    (const float (*)[4])pipeline_verts->data,
@@ -177,6 +177,83 @@ static void fetch_pipeline_run( struct draw_pt_middle_end *middle,
 }
 
 
+static void fetch_pipeline_linear_run( struct draw_pt_middle_end *middle,
+                                       unsigned fetch_start,
+                                       unsigned fetch_count,
+                                       const ushort *draw_elts,
+                                       unsigned draw_count )
+{
+   struct fetch_pipeline_middle_end *fpme = (struct fetch_pipeline_middle_end *)middle;
+   struct draw_context *draw = fpme->draw;
+   struct draw_vertex_shader *shader = draw->vertex_shader;
+   unsigned opt = fpme->opt;
+   unsigned alloc_count = align_int( fetch_count, 4 );
+
+   struct vertex_header *pipeline_verts = 
+      (struct vertex_header *)MALLOC(fpme->vertex_size * alloc_count);
+
+   if (!pipeline_verts) {
+      /* Not much we can do here - just skip the rendering.
+       */
+      assert(0);
+      return;
+   }
+
+   /* Fetch into our vertex buffer
+    */
+   draw_pt_fetch_run_linear( fpme->fetch,
+                             fetch_start,
+                             fetch_count,
+                             (char *)pipeline_verts );
+
+   /* Run the shader, note that this overwrites the data[] parts of
+    * the pipeline verts.  If there is no shader, ie a bypass shader,
+    * then the inputs == outputs, and are already in the correct
+    * place.
+    */
+   if (opt & PT_SHADE)
+   {
+      shader->run_linear(shader, 
+			 (const float (*)[4])pipeline_verts->data,
+			 (      float (*)[4])pipeline_verts->data,
+			 (const float (*)[4])draw->pt.user.constants,
+			 fetch_count,
+			 fpme->vertex_size,
+			 fpme->vertex_size);
+   }
+
+   if (draw_pt_post_vs_run( fpme->post_vs,
+			    pipeline_verts,
+			    fetch_count,
+			    fpme->vertex_size ))
+   {
+      opt |= PT_PIPELINE;
+   }
+
+   /* Do we need to run the pipeline?
+    */
+   if (opt & PT_PIPELINE) {
+      draw_pipeline_run( fpme->draw,
+                         fpme->prim,
+                         pipeline_verts,
+                         fetch_count,
+                         fpme->vertex_size,
+                         draw_elts,
+                         draw_count );
+   }
+   else {
+      draw_pt_emit_linear( fpme->emit,
+                           (const float (*)[4])pipeline_verts->data,
+                           fetch_count,
+                           fpme->vertex_size,
+                           0, /*start*/
+                           draw_count );
+   }
+
+   FREE(pipeline_verts);
+}
+
+
 
 static void fetch_pipeline_finish( struct draw_pt_middle_end *middle )
 {
@@ -206,10 +283,11 @@ struct draw_pt_middle_end *draw_pt_fetch_pipeline_or_emit( struct draw_context *
    if (!fpme)
       goto fail;
 
-   fpme->base.prepare = fetch_pipeline_prepare;
-   fpme->base.run     = fetch_pipeline_run;
-   fpme->base.finish  = fetch_pipeline_finish;
-   fpme->base.destroy = fetch_pipeline_destroy;
+   fpme->base.prepare        = fetch_pipeline_prepare;
+   fpme->base.run            = fetch_pipeline_run;
+   fpme->base.run_linear     = fetch_pipeline_linear_run;
+   fpme->base.finish         = fetch_pipeline_finish;
+   fpme->base.destroy        = fetch_pipeline_destroy;
 
    fpme->draw = draw;