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,
  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 #include "main/mtypes.h"
  40
  41 struct _mesa_index_buffer;
  42 struct _mesa_prim;
  43 struct st_context;
  44
  45 void st_init_draw( struct st_context *st );
  46
  47 void st_destroy_draw( struct st_context *st );
  48
  49 extern void
  50 st_draw_vbo(GLcontext *ctx,
  51             const struct gl_client_array **arrays,
  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
  59 extern void
  60 st_feedback_draw_vbo(GLcontext *ctx,
  61                      const struct gl_client_array **arrays,
  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
  69 /* Internal function:
  70  */
  71 extern GLuint
  72 st_pipe_vertex_format(GLenum type, GLuint size, GLenum format,
  73                       GLboolean normalized);
  74
  75
  76 /**
  77  * When drawing with VBOs, the addresses specified with
  78  * glVertex/Color/TexCoordPointer() are really offsets into the VBO, not real
  79  * addresses.  At some point we need to convert those pointers to offsets.
  80  * This function is basically a cast wrapper to avoid warnings when building
  81  * in 64-bit mode.
  82  */
  83 static INLINE unsigned
  84 pointer_to_offset(const void *ptr)
  85 {
  86    return (unsigned) (((unsigned long) ptr) & 0xffffffffUL);
  87 }
  88
  89
  90 #endif