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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@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.