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      1 /**************************************************************************
      2  *
      3  * Copyright 2004 Tungsten Graphics, Inc., Cedar Park, Texas.
      4  * All Rights Reserved.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the
      8  * "Software"), to deal in the Software without restriction, including
      9  * without limitation the rights to use, copy, modify, merge, publish,
     10  * distribute, sub license, and/or sell copies of the Software, and to
     11  * permit persons to whom the Software is furnished to do so, subject to
     12  * the following conditions:
     13  *
     14  * The above copyright notice and this permission notice (including the
     15  * next paragraph) shall be included in all copies or substantial portions
     16  * of the Software.
     17  *
     18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
     19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
     21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
     22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
     23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
     24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     25  *
     26  **************************************************************************/
     27 
     28  /*
     29   * Authors:
     30   *   Keith Whitwell <keith (at) tungstengraphics.com>
     31   */
     32 
     33 
     34 #ifndef ST_DRAW_H
     35 #define ST_DRAW_H
     36 
     37 #include "main/compiler.h"
     38 #include "main/glheader.h"
     39 
     40 struct _mesa_index_buffer;
     41 struct _mesa_prim;
     42 struct gl_client_array;
     43 struct gl_context;
     44 struct st_context;
     45 
     46 void st_init_draw( struct st_context *st );
     47 
     48 void st_destroy_draw( struct st_context *st );
     49 
     50 extern void
     51 st_draw_vbo(struct gl_context *ctx,
     52             const struct _mesa_prim *prims,
     53             GLuint nr_prims,
     54             const struct _mesa_index_buffer *ib,
     55 	    GLboolean index_bounds_valid,
     56             GLuint min_index,
     57             GLuint max_index,
     58             struct gl_transform_feedback_object *tfb_vertcount);
     59 
     60 extern void
     61 st_feedback_draw_vbo(struct gl_context *ctx,
     62                      const struct _mesa_prim *prims,
     63                      GLuint nr_prims,
     64                      const struct _mesa_index_buffer *ib,
     65 		     GLboolean index_bounds_valid,
     66                      GLuint min_index,
     67                      GLuint max_index,
     68                      struct gl_transform_feedback_object *tfb_vertcount);
     69 
     70 /**
     71  * When drawing with VBOs, the addresses specified with
     72  * glVertex/Color/TexCoordPointer() are really offsets into the VBO, not real
     73  * addresses.  At some point we need to convert those pointers to offsets.
     74  * This function is basically a cast wrapper to avoid warnings when building
     75  * in 64-bit mode.
     76  */
     77 static INLINE unsigned
     78 pointer_to_offset(const void *ptr)
     79 {
     80    return (unsigned) (((unsigned long) ptr) & 0xffffffffUL);
     81 }
     82 
     83 
     84 #endif
     85