Code reorganization: move files into their places.

This is in a separate commit to ensure renames are properly preserved.

1 files changed, 482 insertions, 0 deletions

diff --git a/src/gallium/aux/draw/draw_prim.c b/src/gallium/aux/draw/draw_prim.c
new file mode 100644
index 00000000000..51e2242719a
--- /dev/null
+++ b/src/gallium/aux/draw/draw_prim.c
@@ -0,0 +1,482 @@
+/**************************************************************************
+ * 
+ * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ * 
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ * 
+ * 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
+ * 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.
+ * 
+ **************************************************************************/
+
+ /*
+  * Authors:
+  *   Keith Whitwell <[email protected]>
+  */
+
+#include "pipe/p_debug.h"
+
+#include "draw_private.h"
+#include "draw_context.h"
+
+
+
+#define RP_NONE  0
+#define RP_POINT 1
+#define RP_LINE  2
+#define RP_TRI   3
+
+
+static unsigned reduced_prim[PIPE_PRIM_POLYGON + 1] = {
+   RP_POINT,
+   RP_LINE,
+   RP_LINE,
+   RP_LINE,
+   RP_TRI,
+   RP_TRI,
+   RP_TRI,
+   RP_TRI,
+   RP_TRI,
+   RP_TRI
+};
+
+
+static void draw_prim_queue_flush( struct draw_context *draw )
+{
+   unsigned i;
+
+   if (0)
+      debug_printf("Flushing with %d prims, %d verts\n",
+                   draw->pq.queue_nr, draw->vs.queue_nr);
+
+   assert (draw->pq.queue_nr != 0);
+
+   /* NOTE: we cannot save draw->pipeline->first in a local var because
+    * draw->pipeline->first is often changed by the first call to tri(),
+    * line(), etc.
+    */
+   if (draw->rasterizer->line_stipple_enable) {
+      switch (draw->reduced_prim) {
+      case RP_TRI:
+	 for (i = 0; i < draw->pq.queue_nr; i++) {
+	    if (draw->pq.queue[i].reset_line_stipple)
+	       draw->pipeline.first->reset_stipple_counter( draw->pipeline.first );
+	    
+	    draw->pipeline.first->tri( draw->pipeline.first, &draw->pq.queue[i] );
+	 }
+	 break;
+      case RP_LINE:
+	 for (i = 0; i < draw->pq.queue_nr; i++) {
+	    if (draw->pq.queue[i].reset_line_stipple)
+	       draw->pipeline.first->reset_stipple_counter( draw->pipeline.first );
+	    
+	    draw->pipeline.first->line( draw->pipeline.first, &draw->pq.queue[i] );
+	 }
+	 break;
+      case RP_POINT:
+	 draw->pipeline.first->reset_stipple_counter( draw->pipeline.first );
+	 for (i = 0; i < draw->pq.queue_nr; i++)
+	    draw->pipeline.first->point( draw->pipeline.first, &draw->pq.queue[i] );
+	 break;
+      }
+   }
+   else {
+      switch (draw->reduced_prim) {
+      case RP_TRI:
+	 for (i = 0; i < draw->pq.queue_nr; i++) 
+	    draw->pipeline.first->tri( draw->pipeline.first, &draw->pq.queue[i] );
+	 break;
+      case RP_LINE:
+	 for (i = 0; i < draw->pq.queue_nr; i++) 
+	    draw->pipeline.first->line( draw->pipeline.first, &draw->pq.queue[i] );
+	 break;
+      case RP_POINT:
+	 for (i = 0; i < draw->pq.queue_nr; i++)
+	    draw->pipeline.first->point( draw->pipeline.first, &draw->pq.queue[i] );
+	 break;
+      }
+   }
+
+   draw->pq.queue_nr = 0;   
+   draw_vertex_cache_unreference( draw );
+}
+
+
+
+void draw_do_flush( struct draw_context *draw, unsigned flags )
+{
+   if (0)
+      debug_printf("Flushing with %d verts, %d prims\n",
+                   draw->vs.queue_nr,
+                   draw->pq.queue_nr );
+
+
+   if (flags >= DRAW_FLUSH_SHADER_QUEUE) {
+      if (draw->vs.queue_nr)
+         (*draw->shader_queue_flush)(draw);
+
+      if (flags >= DRAW_FLUSH_PRIM_QUEUE) {
+	 if (draw->pq.queue_nr)
+	    draw_prim_queue_flush(draw);
+
+	 if (flags >= DRAW_FLUSH_VERTEX_CACHE) {
+            draw_vertex_cache_invalidate(draw);
+
+	    if (flags >= DRAW_FLUSH_STATE_CHANGE) {
+               draw->pipeline.first->flush( draw->pipeline.first, flags );
+               draw->pipeline.first = draw->pipeline.validate;
+               draw->reduced_prim = ~0;
+	    }
+	 }
+      }    
+   }
+}
+
+
+
+/* Return a pointer to a freshly queued primitive header.  Ensure that
+ * there is room in the vertex cache for a maximum of "nr_verts" new
+ * vertices.  Flush primitive and/or vertex queues if necessary to
+ * make space.
+ */
+static struct prim_header *get_queued_prim( struct draw_context *draw,
+					    unsigned nr_verts )
+{
+   if (!draw_vertex_cache_check_space( draw, nr_verts )) {
+//      debug_printf("v");
+      draw_do_flush( draw, DRAW_FLUSH_VERTEX_CACHE );
+   }
+   else if (draw->pq.queue_nr == PRIM_QUEUE_LENGTH) {
+//      debug_printf("p");
+      draw_do_flush( draw, DRAW_FLUSH_PRIM_QUEUE );
+   }
+
+   assert(draw->pq.queue_nr < PRIM_QUEUE_LENGTH);
+
+   return &draw->pq.queue[draw->pq.queue_nr++];
+}
+
+
+
+/**
+ * Add a point to the primitive queue.
+ * \param i0  index into user's vertex arrays
+ */
+static void do_point( struct draw_context *draw,
+		      unsigned i0 )
+{
+   struct prim_header *prim = get_queued_prim( draw, 1 );
+   
+   prim->reset_line_stipple = 0;
+   prim->edgeflags = 1;
+   prim->pad = 0;
+   prim->v[0] = draw->vcache.get_vertex( draw, i0 );
+}
+
+
+/**
+ * Add a line to the primitive queue.
+ * \param i0  index into user's vertex arrays
+ * \param i1  index into user's vertex arrays
+ */
+static void do_line( struct draw_context *draw,
+		     boolean reset_stipple,
+		     unsigned i0,
+		     unsigned i1 )
+{
+   struct prim_header *prim = get_queued_prim( draw, 2 );
+   
+   prim->reset_line_stipple = reset_stipple;
+   prim->edgeflags = 1;
+   prim->pad = 0;
+   prim->v[0] = draw->vcache.get_vertex( draw, i0 );
+   prim->v[1] = draw->vcache.get_vertex( draw, i1 );
+}
+
+/**
+ * Add a triangle to the primitive queue.
+ */
+static void do_triangle( struct draw_context *draw,
+			 unsigned i0,
+			 unsigned i1,
+			 unsigned i2 )
+{
+   struct prim_header *prim = get_queued_prim( draw, 3 );
+   
+   prim->reset_line_stipple = 1;
+   prim->edgeflags = ~0;
+   prim->pad = 0;
+   prim->v[0] = draw->vcache.get_vertex( draw, i0 );
+   prim->v[1] = draw->vcache.get_vertex( draw, i1 );
+   prim->v[2] = draw->vcache.get_vertex( draw, i2 );
+}
+			  
+static void do_ef_triangle( struct draw_context *draw,
+			    boolean reset_stipple,
+			    unsigned ef_mask,
+			    unsigned i0,
+			    unsigned i1,
+			    unsigned i2 )
+{
+   struct prim_header *prim = get_queued_prim( draw, 3 );
+   struct vertex_header *v0 = draw->vcache.get_vertex( draw, i0 );
+   struct vertex_header *v1 = draw->vcache.get_vertex( draw, i1 );
+   struct vertex_header *v2 = draw->vcache.get_vertex( draw, i2 );
+
+   prim->reset_line_stipple = reset_stipple;
+
+   prim->edgeflags = ef_mask & ((v0->edgeflag << 0) | 
+				(v1->edgeflag << 1) | 
+				(v2->edgeflag << 2));
+   prim->pad = 0;
+   prim->v[0] = v0;
+   prim->v[1] = v1;
+   prim->v[2] = v2;
+}
+
+
+static void do_ef_quad( struct draw_context *draw,
+		     unsigned v0,
+		     unsigned v1,
+		     unsigned v2,
+		     unsigned v3 )
+{
+   const unsigned omitEdge2 = ~(1 << 1);
+   const unsigned omitEdge3 = ~(1 << 2);
+   do_ef_triangle( draw, 1, omitEdge2, v0, v1, v3 );
+   do_ef_triangle( draw, 0, omitEdge3, v1, v2, v3 );
+}
+
+static void do_quad( struct draw_context *draw,
+		     unsigned v0,
+		     unsigned v1,
+		     unsigned v2,
+		     unsigned v3 )
+{
+   do_triangle( draw, v0, v1, v3 );
+   do_triangle( draw, v1, v2, v3 );
+}
+
+
+/**
+ * Main entrypoint to draw some number of points/lines/triangles
+ */
+static void
+draw_prim( struct draw_context *draw, 
+	   unsigned prim, unsigned start, unsigned count )
+{
+   unsigned i;
+   boolean unfilled = (draw->rasterizer->fill_cw != PIPE_POLYGON_MODE_FILL ||
+		       draw->rasterizer->fill_ccw != PIPE_POLYGON_MODE_FILL);
+
+//   debug_printf("%s (%d) %d/%d\n", __FUNCTION__, draw->prim, start, count );
+
+   switch (prim) {
+   case PIPE_PRIM_POINTS:
+      for (i = 0; i < count; i ++) {
+	 do_point( draw,
+		   start + i );
+      }
+      break;
+
+   case PIPE_PRIM_LINES:
+      for (i = 0; i+1 < count; i += 2) {
+	 do_line( draw, 
+		  TRUE,
+		  start + i + 0,
+		  start + i + 1);
+      }
+      break;
+
+   case PIPE_PRIM_LINE_LOOP:  
+      if (count >= 2) {
+	 for (i = 1; i < count; i++) {
+	    do_line( draw, 
+		     i == 1, 	/* XXX: only if vb not split */
+		     start + i - 1,
+		     start + i );
+	 }
+
+	 do_line( draw, 
+		  0,
+		  start + count - 1,
+		  start + 0 );
+      }
+      break;
+
+   case PIPE_PRIM_LINE_STRIP:
+      for (i = 1; i < count; i++) {
+	 do_line( draw,
+		  i == 1,
+		  start + i - 1,
+		  start + i );
+      }
+      break;
+
+   case PIPE_PRIM_TRIANGLES:
+      if (unfilled) {
+	 for (i = 0; i+2 < count; i += 3) {
+	    do_ef_triangle( draw,
+			    1, 
+			    ~0,
+			    start + i + 0,
+			    start + i + 1,
+			    start + i + 2 );
+	 }
+      } 
+      else {
+	 for (i = 0; i+2 < count; i += 3) {
+	    do_triangle( draw,
+			 start + i + 0,
+			 start + i + 1,
+			 start + i + 2 );
+	 }
+      }
+      break;
+
+   case PIPE_PRIM_TRIANGLE_STRIP:
+      for (i = 0; i+2 < count; i++) {
+	 if (i & 1) {
+	    do_triangle( draw,
+			 start + i + 1,
+			 start + i + 0,
+			 start + i + 2 );
+	 }
+	 else {
+	    do_triangle( draw,
+			 start + i + 0,
+			 start + i + 1,
+			 start + i + 2 );
+	 }
+      }
+      break;
+
+   case PIPE_PRIM_TRIANGLE_FAN:
+      if (count >= 3) {
+	 for (i = 0; i+2 < count; i++) {
+	    do_triangle( draw,
+			 start + 0,
+			 start + i + 1,
+			 start + i + 2 );
+	 }
+      }
+      break;
+
+
+   case PIPE_PRIM_QUADS:
+      if (unfilled) {
+	 for (i = 0; i+3 < count; i += 4) {
+	    do_ef_quad( draw,
+			start + i + 0,
+			start + i + 1,
+			start + i + 2,
+			start + i + 3);
+	 }
+      }
+      else {
+	 for (i = 0; i+3 < count; i += 4) {
+	    do_quad( draw,
+		     start + i + 0,
+		     start + i + 1,
+		     start + i + 2,
+		     start + i + 3);
+	 }
+      }
+      break;
+
+   case PIPE_PRIM_QUAD_STRIP:
+      if (unfilled) {
+	 for (i = 0; i+3 < count; i += 2) {
+	    do_ef_quad( draw,
+			start + i + 2,
+			start + i + 0,
+			start + i + 1,
+			start + i + 3);
+	 }
+      }
+      else {
+	 for (i = 0; i+3 < count; i += 2) {
+	    do_quad( draw,
+		     start + i + 2,
+		     start + i + 0,
+		     start + i + 1,
+		     start + i + 3);
+	 }
+      }
+      break;
+
+   case PIPE_PRIM_POLYGON:
+      if (unfilled) {
+	 unsigned ef_mask = (1<<2) | (1<<0);
+
+	 for (i = 0; i+2 < count; i++) {
+
+            if (i + 3 >= count)
+	       ef_mask |= (1<<1);
+
+	    do_ef_triangle( draw,
+			    i == 0,
+			    ef_mask,
+			    start + i + 1,
+			    start + i + 2,
+			    start + 0);
+
+	    ef_mask &= ~(1<<2);
+	 }
+      }
+      else {
+	 for (i = 0; i+2 < count; i++) {
+	    do_triangle( draw,
+			 start + i + 1,
+			 start + i + 2,
+			 start + 0);
+	 }
+      }
+      break;
+
+   default:
+      assert(0);
+      break;
+   }
+}
+
+
+
+
+/**
+ * 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_prim(draw, prim, start, count);
+}
+
+