src/mesa/state_tracker/st_draw.h

   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,
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  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 struct _mesa_prim;
  38 struct _mesa_index_buffer;
  39
  40 void st_init_draw( struct st_context *st );
  41
  42 void st_destroy_draw( struct st_context *st );
  43
  44 extern void
  45 st_draw_vbo(GLcontext *ctx,
  46             const struct gl_client_array **arrays,
  47             const struct _mesa_prim *prims,
  48             GLuint nr_prims,
  49             const struct _mesa_index_buffer *ib,
  50             GLboolean index_bounds_valid,
  51             GLuint min_index,
  52             GLuint max_index);
  53
  54 extern void
  55 st_feedback_draw_vbo(GLcontext *ctx,
  56                      const struct gl_client_array **arrays,
  57                      const struct _mesa_prim *prims,
  58                      GLuint nr_prims,
  59                      const struct _mesa_index_buffer *ib,
  60                      GLboolean index_bounds_valid,
  61                      GLuint min_index,
  62                      GLuint max_index);
  63
  64 /* Internal function:
  65  */
  66 extern GLuint
  67 st_pipe_vertex_format(GLenum type, GLuint size, GLenum format,
  68                       GLboolean normalized);
  69
  70
  71 /**
  72  * When drawing with VBOs, the addresses specified with
  73  * glVertex/Color/TexCoordPointer() are really offsets into the VBO, not real
  74  * addresses.  At some point we need to convert those pointers to offsets.
  75  * This function is basically a cast wrapper to avoid warnings when building
  76  * in 64-bit mode.
  77  */
  78 static INLINE unsigned
  79 pointer_to_offset(const void *ptr)
  80 {
  81    return (unsigned) (((unsigned long) ptr) & 0xffffffffUL);
  82 }
  83
  84
  85 #endif