Merge branch 'upstream-gallium-0.1' into nouveau-gallium-0.1

1 files changed, 83 insertions, 142 deletions

diff --git a/src/gallium/auxiliary/draw/draw_pt.c b/src/gallium/auxiliary/draw/draw_pt.c
index 3d2e7bf7b8..f5a3bf390e 100644
--- a/src/gallium/auxiliary/draw/draw_pt.c
+++ b/src/gallium/auxiliary/draw/draw_pt.c
@@ -36,146 +36,53 @@
 #include "draw/draw_pt.h"
 
 
-#if 0
-static boolean too_many_elts( struct draw_context *draw,
-                              unsigned elts )
-{
-   return elts > (8 * 1024);
-}
-#endif
-
-static INLINE unsigned reduced_prim(unsigned prim)
-{
-   /*FIXME*/
-   return prim;
-}
 
-static INLINE boolean good_prim(unsigned prim)
-{
-   /*FIXME*/
-   return FALSE;
-}
 
-boolean
+/* Overall we split things into:
+ *     - frontend -- prepare fetch_elts, draw_elts - eg vcache
+ *     - middle   -- fetch, shade, cliptest, viewport
+ *     - pipeline -- the prim pipeline: clipping, wide lines, etc 
+ *     - backend  -- the vbuf_render provided by the driver.
+ */
+static boolean
 draw_pt_arrays(struct draw_context *draw, 
                unsigned prim,
                unsigned start, 
                unsigned count)
 {
-   const boolean pipeline = draw_need_pipeline(draw, prim);
-   const boolean cliptest = !draw->rasterizer->bypass_clipping;
-   const boolean shading  = !draw->rasterizer->bypass_vs;
    struct draw_pt_front_end *frontend = NULL;
    struct draw_pt_middle_end *middle = NULL;
+   unsigned opt = 0;
 
-   if (!draw->render)
-      return FALSE;
-   /*debug_printf("XXXXXXXXXX needs_pipeline = %d\n", pipeline);*/
+   if (!draw->render) {
+      opt |= PT_PIPELINE;
+   }
 
-   /* Overall we do:
-    *     - frontend -- prepare fetch_elts, draw_elts - eg vcache
-    *     - middle   -- fetch, shade, cliptest, viewport
-    *     - pipeline -- the prim pipeline: clipping, wide lines, etc 
-    *     - backend  -- the vbuf_render provided by the driver.
-    */
+   if (draw_need_pipeline(draw, 
+                          draw->rasterizer,
+                          prim)) {
+      opt |= PT_PIPELINE;
+   }
 
-   if (shading && !draw->use_pt_shaders)
-      return FALSE;
+   if (!draw->bypass_clipping) {
+      opt |= PT_CLIPTEST;
+   }
 
+   if (!draw->rasterizer->bypass_vs) {
+      opt |= PT_SHADE;
+   }
 
-   if (!cliptest && !pipeline && !shading) {
-      /* This is the 'passthrough' path:
-       */
-      /* Fetch user verts, emit hw verts:
-       */
+   if (opt)
+      middle = draw->pt.middle.general;
+   else
       middle = draw->pt.middle.fetch_emit;
-   }
-   else if (!cliptest && !shading) {
-      /* This is the 'passthrough' path targetting the pipeline backend.
-       */
-      /* Fetch user verts, emit pipeline verts, run pipeline:
-       */
-      middle = draw->pt.middle.fetch_pipeline;
-   }
-   else if (!cliptest && !pipeline) {
-      /* Fetch user verts, run vertex shader, emit hw verts:
-       */
-      middle = draw->pt.middle.fetch_shade_emit;
-   }
-   else if (!pipeline) {
-      /* Even though !pipeline, we have to run it to get clipping.  We
-       * do know that the pipeline is just the clipping operation, but
-       * that probably doesn't help much.
-       *
-       * This is going to be the most important path for a lot of
-       * swtnl cards.
-       */
-      /* Fetch user verts, 
-       *    run vertex shader, 
-       *    cliptest and viewport trasform
-       *    if no clipped vertices,
-       *        emit hw verts
-       *    else
-       *        run pipline
-       */
-      middle = draw->pt.middle.fetch_shade_cliptest_pipeline_or_emit;
-   }
-   else {
-      /* This is what we're currently always doing:
-       */
-      /* Fetch user verts, run vertex shader, cliptest, run pipeline
-       * or
-       * Fetch user verts, run vertex shader, run pipeline
-       */
-      middle = draw->pt.middle.fetch_shade_cliptest_pipeline_or_emit;
-   }
 
 
-   /* If !pipeline, need to make sure we respect the driver's limited
-    * capabilites to receive blocks of vertex data and elements.
+   /* May create a short-circuited version of this for small primitives:
     */
-#if 0
-   if (!pipeline) {
-      unsigned vertex_mode = passthrough;
-      unsigned nr_verts = count_vertices( draw, start, count );
-      unsigned hw_prim = prim;
-
-      if (is_elts(draw)) {
-         frontend = draw->pt.front.vcache;
-         hw_prim = reduced_prim(prim);
-      }
-#if 0
-      if (too_many_verts(nr_verts)) {
-         /* if (is_verts(draw) && can_split(prim)) {
-            draw = draw_arrays_split;
-         }
-         else */ {
-            frontend = draw->pt.front.vcache;
-            hw_prim = reduced_prim(prim);
-         }
-      }
-#endif
-
-      if (too_many_elts(count)) {
-
-         /* if (is_elts(draw) && can_split(prim)) {
-            draw = draw_elts_split;
-         }
-         else */ {
-            frontend = draw->pt.front.vcache;
-            hw_prim = reduced_prim(prim);
-         }
-      }
-
-      if (!good_prim(hw_prim)) {
-         frontend = draw->pt.front.vcache;
-      }
-   }
-#else
    frontend = draw->pt.front.vcache;
-#endif   
 
-   frontend->prepare( frontend, prim, middle );
+   frontend->prepare( frontend, prim, middle, opt );
 
    frontend->run( frontend,
                   draw_pt_elt_func( draw ),
@@ -190,21 +97,16 @@ draw_pt_arrays(struct draw_context *draw,
 
 boolean draw_pt_init( struct draw_context *draw )
 {
-   draw->pt.middle.fetch_emit = draw_pt_fetch_emit( draw );
-   if (!draw->pt.middle.fetch_emit)
-      return FALSE;
-
-   draw->pt.middle.fetch_pipeline = draw_pt_fetch_pipeline( draw );
-   if (!draw->pt.middle.fetch_pipeline)
+   draw->pt.front.vcache = draw_pt_vcache( draw );
+   if (!draw->pt.front.vcache)
       return FALSE;
 
-   draw->pt.middle.fetch_shade_cliptest_pipeline_or_emit =
-      draw_pt_fetch_pipeline_or_emit( draw );
-   if (!draw->pt.middle.fetch_shade_cliptest_pipeline_or_emit)
+   draw->pt.middle.fetch_emit = draw_pt_fetch_emit( draw );
+   if (!draw->pt.middle.fetch_emit)
       return FALSE;
 
-   draw->pt.front.vcache = draw_pt_vcache( draw );
-   if (!draw->pt.front.vcache)
+   draw->pt.middle.general = draw_pt_fetch_pipeline_or_emit( draw );
+   if (!draw->pt.middle.general)
       return FALSE;
 
    return TRUE;
@@ -213,24 +115,63 @@ boolean draw_pt_init( struct draw_context *draw )
 
 void draw_pt_destroy( struct draw_context *draw )
 {
+   if (draw->pt.middle.general) {
+      draw->pt.middle.general->destroy( draw->pt.middle.general );
+      draw->pt.middle.general = NULL;
+   }
+
    if (draw->pt.middle.fetch_emit) {
       draw->pt.middle.fetch_emit->destroy( draw->pt.middle.fetch_emit );
       draw->pt.middle.fetch_emit = NULL;
    }
 
-   if (draw->pt.middle.fetch_pipeline) {
-      draw->pt.middle.fetch_pipeline->destroy( draw->pt.middle.fetch_pipeline );
-      draw->pt.middle.fetch_pipeline = NULL;
-   }
-
-   if (draw->pt.middle.fetch_shade_cliptest_pipeline_or_emit) {
-      draw->pt.middle.fetch_shade_cliptest_pipeline_or_emit->destroy(
-         draw->pt.middle.fetch_shade_cliptest_pipeline_or_emit );
-      draw->pt.middle.fetch_shade_cliptest_pipeline_or_emit = NULL;
-   }
-
    if (draw->pt.front.vcache) {
       draw->pt.front.vcache->destroy( draw->pt.front.vcache );
       draw->pt.front.vcache = NULL;
    }
 }
+
+
+
+static unsigned reduced_prim[PIPE_PRIM_POLYGON + 1] = {
+   PIPE_PRIM_POINTS,
+   PIPE_PRIM_LINES,
+   PIPE_PRIM_LINES,
+   PIPE_PRIM_LINES,
+   PIPE_PRIM_TRIANGLES,
+   PIPE_PRIM_TRIANGLES,
+   PIPE_PRIM_TRIANGLES,
+   PIPE_PRIM_TRIANGLES,
+   PIPE_PRIM_TRIANGLES,
+   PIPE_PRIM_TRIANGLES
+};
+
+
+/**
+ * Draw vertex arrays
+ * This is the main entrypoint into the drawing module.
+ * \param prim  one of PIPE_PRIM_x
+ * \param start  index of first vertex to draw
+ * \param count  number of vertices to draw
+ */
+void
+draw_arrays(struct draw_context *draw, unsigned prim,
+            unsigned start, unsigned count)
+{
+   if (reduced_prim[prim] != draw->reduced_prim) {
+      draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE );
+      draw->reduced_prim = reduced_prim[prim];
+   }
+
+   /* drawing done here: */
+   draw_pt_arrays(draw, prim, start, count);
+}
+
+boolean draw_pt_get_edgeflag( struct draw_context *draw,
+                              unsigned idx )
+{
+   if (draw->pt.user.edgeflag)
+      return (draw->pt.user.edgeflag[idx/32] & (1 << (idx%32))) != 0;
+   else
+      return 1;
+}