Checkpoint of new vbo-building code. Currently builds regular arrays

rather than VBO's - VBOs are easy but need to look closer at the
driver interface.  The trivial/tri demo works.

1 files changed, 255 insertions, 0 deletions

diff --git a/src/mesa/vbo/vbo_exec_eval.c b/src/mesa/vbo/vbo_exec_eval.c
new file mode 100644
index 0000000000..99a8044576
--- /dev/null
+++ b/src/mesa/vbo/vbo_exec_eval.c
@@ -0,0 +1,255 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.1
+ *
+ * Copyright (C) 1999-2004  Brian Paul   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, sublicense,
+ * 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 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 NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL 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 <keith@tungstengraphics.com>
+ */
+
+#include "glheader.h"
+#include "api_eval.h"
+#include "context.h"
+#include "macros.h"
+#include "math/m_eval.h"
+#include "vbo_exec.h"
+#include "dispatch.h"
+
+
+static void clear_active_eval1( struct vbo_exec_context *exec, GLuint attr ) 
+{
+   exec->eval.map1[attr].map = NULL;
+}
+
+static void clear_active_eval2( struct vbo_exec_context *exec, GLuint attr ) 
+{
+   exec->eval.map2[attr].map = NULL;
+}
+
+static void set_active_eval1( struct vbo_exec_context *exec, GLuint attr, GLuint dim, 
+			      struct gl_1d_map *map )
+{
+   if (!exec->eval.map1[attr].map) {
+      exec->eval.map1[attr].map = map;
+      exec->eval.map1[attr].sz = dim;
+   }
+} 
+
+static void set_active_eval2( struct vbo_exec_context *exec, GLuint attr, GLuint dim, 
+			      struct gl_2d_map *map )
+{
+   if (!exec->eval.map2[attr].map) {
+      exec->eval.map2[attr].map = map;
+      exec->eval.map2[attr].sz = dim;
+   }
+} 
+
+void vbo_exec_eval_update( struct vbo_exec_context *exec )
+{
+   GLcontext *ctx = exec->ctx;
+   GLuint attr;
+
+   /* Vertex program maps have priority over conventional attribs */
+
+   for (attr = 0; attr < VBO_ATTRIB_FIRST_MATERIAL; attr++) {
+      clear_active_eval1( exec, attr );
+      clear_active_eval2( exec, attr );
+   }
+
+   /* _NEW_PROGRAM */
+   if (ctx->VertexProgram._Enabled) {
+      for (attr = 0; attr < VBO_ATTRIB_FIRST_MATERIAL; attr++) {
+	 /* _NEW_EVAL */
+	 if (ctx->Eval.Map1Attrib[attr]) 
+	    set_active_eval1( exec, attr, 4, &ctx->EvalMap.Map1Attrib[attr] );
+
+	 if (ctx->Eval.Map2Attrib[attr]) 
+	    set_active_eval2( exec, attr, 4, &ctx->EvalMap.Map2Attrib[attr] );
+      }
+   }
+
+   if (ctx->Eval.Map1Color4) 
+      set_active_eval1( exec, VBO_ATTRIB_COLOR0, 4, &ctx->EvalMap.Map1Color4 );
+      
+   if (ctx->Eval.Map2Color4) 
+      set_active_eval2( exec, VBO_ATTRIB_COLOR0, 4, &ctx->EvalMap.Map2Color4 );
+
+   if (ctx->Eval.Map1TextureCoord4) 
+      set_active_eval1( exec, VBO_ATTRIB_TEX0, 4, &ctx->EvalMap.Map1Texture4 );
+   else if (ctx->Eval.Map1TextureCoord3) 
+      set_active_eval1( exec, VBO_ATTRIB_TEX0, 3, &ctx->EvalMap.Map1Texture3 );
+   else if (ctx->Eval.Map1TextureCoord2) 
+      set_active_eval1( exec, VBO_ATTRIB_TEX0, 2, &ctx->EvalMap.Map1Texture2 );
+   else if (ctx->Eval.Map1TextureCoord1) 
+      set_active_eval1( exec, VBO_ATTRIB_TEX0, 1, &ctx->EvalMap.Map1Texture1 );
+
+   if (ctx->Eval.Map2TextureCoord4) 
+      set_active_eval2( exec, VBO_ATTRIB_TEX0, 4, &ctx->EvalMap.Map2Texture4 );
+   else if (ctx->Eval.Map2TextureCoord3) 
+      set_active_eval2( exec, VBO_ATTRIB_TEX0, 3, &ctx->EvalMap.Map2Texture3 );
+   else if (ctx->Eval.Map2TextureCoord2) 
+      set_active_eval2( exec, VBO_ATTRIB_TEX0, 2, &ctx->EvalMap.Map2Texture2 );
+   else if (ctx->Eval.Map2TextureCoord1) 
+      set_active_eval2( exec, VBO_ATTRIB_TEX0, 1, &ctx->EvalMap.Map2Texture1 );
+
+   if (ctx->Eval.Map1Normal) 
+      set_active_eval1( exec, VBO_ATTRIB_NORMAL, 3, &ctx->EvalMap.Map1Normal );
+
+   if (ctx->Eval.Map2Normal) 
+      set_active_eval2( exec, VBO_ATTRIB_NORMAL, 3, &ctx->EvalMap.Map2Normal );
+
+   if (ctx->Eval.Map1Vertex4) 
+      set_active_eval1( exec, VBO_ATTRIB_POS, 4, &ctx->EvalMap.Map1Vertex4 );
+   else if (ctx->Eval.Map1Vertex3) 
+      set_active_eval1( exec, VBO_ATTRIB_POS, 3, &ctx->EvalMap.Map1Vertex3 );
+
+   if (ctx->Eval.Map2Vertex4) 
+      set_active_eval2( exec, VBO_ATTRIB_POS, 4, &ctx->EvalMap.Map2Vertex4 );
+   else if (ctx->Eval.Map2Vertex3) 
+      set_active_eval2( exec, VBO_ATTRIB_POS, 3, &ctx->EvalMap.Map2Vertex3 );
+
+   exec->eval.recalculate_maps = 0;
+}
+
+
+
+void vbo_exec_do_EvalCoord1f(struct vbo_exec_context *exec, GLfloat u)
+{
+   GLuint attr;
+
+   for (attr = 1; attr <= VBO_ATTRIB_INDEX; attr++) {
+      struct gl_1d_map *map = exec->eval.map1[attr].map;
+      if (map) {
+	 GLfloat uu = (u - map->u1) * map->du;
+	 GLfloat data[4];
+
+	 ASSIGN_4V(data, 0, 0, 0, 1);
+
+	 _math_horner_bezier_curve(map->Points, data, uu, 
+				   exec->eval.map1[attr].sz, 
+				   map->Order);
+
+	 COPY_SZ_4V( exec->vtx.attrptr[attr],
+		     exec->vtx.attrsz[attr],
+		     data );
+      }
+   }
+
+   /** Vertex -- EvalCoord1f is a noop if this map not enabled:
+    **/
+   if (exec->eval.map1[0].map) {
+      struct gl_1d_map *map = exec->eval.map1[0].map;
+      GLfloat uu = (u - map->u1) * map->du;
+      GLfloat vertex[4];
+
+      ASSIGN_4V(vertex, 0, 0, 0, 1);
+
+      _math_horner_bezier_curve(map->Points, vertex, uu, 
+				exec->eval.map1[0].sz, 
+				map->Order);
+
+      if (exec->eval.map1[0].sz == 4) 
+	 CALL_Vertex4fv(GET_DISPATCH(), ( vertex ));
+      else
+	 CALL_Vertex3fv(GET_DISPATCH(), ( vertex )); 
+   }
+}
+
+
+
+void vbo_exec_do_EvalCoord2f( struct vbo_exec_context *exec, 
+			      GLfloat u, GLfloat v )
+{   
+   GLuint attr;
+
+   for (attr = 1; attr <= VBO_ATTRIB_INDEX; attr++) {
+      struct gl_2d_map *map = exec->eval.map2[attr].map;
+      if (map) {
+	 GLfloat uu = (u - map->u1) * map->du;
+	 GLfloat vv = (v - map->v1) * map->dv;
+	 GLfloat data[4];
+
+	 ASSIGN_4V(data, 0, 0, 0, 1);
+
+	 _math_horner_bezier_surf(map->Points, 
+				  data, 
+				  uu, vv, 
+				  exec->eval.map2[attr].sz, 
+				  map->Uorder, map->Vorder);
+
+	 COPY_SZ_4V( exec->vtx.attrptr[attr],
+		     exec->vtx.attrsz[attr],
+		     data );
+      }
+   }
+
+   /** Vertex -- EvalCoord2f is a noop if this map not enabled:
+    **/
+   if (exec->eval.map2[0].map) {
+      struct gl_2d_map *map = exec->eval.map2[0].map;
+      GLfloat uu = (u - map->u1) * map->du;
+      GLfloat vv = (v - map->v1) * map->dv;
+      GLfloat vertex[4];
+
+      ASSIGN_4V(vertex, 0, 0, 0, 1);
+
+      if (exec->ctx->Eval.AutoNormal) {
+	 GLfloat normal[4];
+         GLfloat du[4], dv[4];
+
+         _math_de_casteljau_surf(map->Points, vertex, du, dv, uu, vv, 
+				 exec->eval.map2[0].sz,
+				 map->Uorder, map->Vorder);
+
+	 if (exec->eval.map2[0].sz == 4) {
+	    du[0] = du[0]*vertex[3] - du[3]*vertex[0];
+	    du[1] = du[1]*vertex[3] - du[3]*vertex[1];
+	    du[2] = du[2]*vertex[3] - du[3]*vertex[2];
+	 
+	    dv[0] = dv[0]*vertex[3] - dv[3]*vertex[0];
+	    dv[1] = dv[1]*vertex[3] - dv[3]*vertex[1];
+	    dv[2] = dv[2]*vertex[3] - dv[3]*vertex[2];
+	 }
+
+
+         CROSS3(normal, du, dv);
+         NORMALIZE_3FV(normal);
+	 normal[3] = 1.0;
+
+	 COPY_SZ_4V( exec->vtx.attrptr[VBO_ATTRIB_NORMAL],
+		     exec->vtx.attrsz[VBO_ATTRIB_NORMAL],
+		     normal );
+
+      }
+      else {
+         _math_horner_bezier_surf(map->Points, vertex, uu, vv, 
+				  exec->eval.map2[0].sz,
+				  map->Uorder, map->Vorder);
+      }
+
+      if (exec->vtx.attrsz[0] == 4) 
+	 CALL_Vertex4fv(GET_DISPATCH(), ( vertex ));
+      else
+	 CALL_Vertex3fv(GET_DISPATCH(), ( vertex )); 
+   }
+}
+
+