src/mesa/state_tracker/st_draw.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2004 VMware, Inc.
   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,
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  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 VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
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  25  *
  26  **************************************************************************/
  27
  28  /*
  29   * Authors:
  30   *   Keith Whitwell <keithw@vmware.com>
  31   */
  32
  33
  34 #ifndef ST_DRAW_H
  35 #define ST_DRAW_H
  36
  37 #include "main/glheader.h"
  38
  39 struct _mesa_index_buffer;
  40 struct _mesa_prim;
  41 struct gl_context;
  42 struct st_context;
  43
  44 void st_init_draw_functions(struct dd_function_table *functions);
  45
  46 void st_destroy_draw( struct st_context *st );
  47
  48 struct draw_context *st_get_draw_context(struct st_context *st);
  49
  50 extern void
  51 st_feedback_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                      GLuint num_instances,
  59                      GLuint base_instance,
  60                      struct gl_transform_feedback_object *tfb_vertcount,
  61                      unsigned stream);
  62
  63 /**
  64  * When drawing with VBOs, the addresses specified with
  65  * glVertex/Color/TexCoordPointer() are really offsets into the VBO, not real
  66  * addresses.  At some point we need to convert those pointers to offsets.
  67  * This function is basically a cast wrapper to avoid warnings when building
  68  * in 64-bit mode.
  69  */
  70 static inline unsigned
  71 pointer_to_offset(const void *ptr)
  72 {
  73    return (unsigned) (((GLsizeiptr) ptr) & 0xffffffffUL);
  74 }
  75
  76
  77 bool
  78 st_draw_quad(struct st_context *st,
  79              float x0, float y0, float x1, float y1, float z,
  80              float s0, float t0, float s1, float t1,
  81              const float *color,
  82              unsigned num_instances);
  83
  84 #endif