src/mesa/tnl/t_vertex.h

   1 /*
   2  * Copyright 2003 Tungsten Graphics, inc.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * on the rights to use, copy, modify, merge, publish, distribute, sub
   9  * license, and/or sell copies of the Software, and to permit persons to whom
  10  * the Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
  19  * TUNGSTEN GRAPHICS AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  20  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  21  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  22  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors:
  25  *    Keith Whitwell <keithw@tungstengraphics.com>
  26  */
  27
  28 #ifndef _TNL_VERTEX_H
  29 #define _TNL_VERTEX_H
  30
  31 /* New mechanism to specify hardware vertices so that tnl can build
  32  * and manipulate them directly.
  33  */
  34
  35
  36 /* It will probably be necessary to allow drivers to specify new
  37  * emit-styles to cover all the wierd and wacky things out there.
  38  */
  39 enum tnl_attr_format {
  40    EMIT_1F,
  41    EMIT_2F,
  42    EMIT_3F,
  43    EMIT_4F,
  44    EMIT_2F_VIEWPORT,            /* do viewport transform and emit */
  45    EMIT_3F_VIEWPORT,            /* do viewport transform and emit */
  46    EMIT_4F_VIEWPORT,            /* do viewport transform and emit */
  47    EMIT_3F_XYW,                 /* for projective texture */
  48    EMIT_1UB_1F,                 /* for fog coordinate */
  49    EMIT_3UB_3F_BGR,             /* for specular color */
  50    EMIT_3UB_3F_RGB,             /* for specular color */
  51    EMIT_4UB_4F_BGRA,            /* for color */
  52    EMIT_4UB_4F_RGBA,            /* for color */
  53    EMIT_4CHAN_4F_RGBA,          /* for swrast color */
  54    EMIT_PAD,                    /* leave a hole of 'offset' bytes */
  55    EMIT_MAX
  56 };
  57
  58 struct tnl_attr_map {
  59    GLuint attrib;                       /* _TNL_ATTRIB_ enum */
  60    enum tnl_attr_format format;
  61    GLuint offset;
  62 };
  63
  64
  65
  66 /* Interpolate between two vertices to produce a third:
  67  */
  68 extern void _tnl_interp( GLcontext *ctx,
  69                          GLfloat t,
  70                          GLuint edst, GLuint eout, GLuint ein,
  71                          GLboolean force_boundary );
  72
  73 /* Copy colors from one vertex to another:
  74  */
  75 extern void _tnl_copy_pv(  GLcontext *ctx, GLuint edst, GLuint esrc );
  76
  77
  78 /* Extract a named attribute from a hardware vertex.  Will have to
  79  * reverse any viewport transformation, swizzling or other conversions
  80  * which may have been applied:
  81  */
  82 extern void _tnl_get_attr( GLcontext *ctx, const void *vertex, GLenum attrib,
  83                            GLfloat *dest );
  84
  85 /* Complementary to the above.
  86  */
  87 extern void _tnl_set_attr( GLcontext *ctx, void *vout, GLenum attrib,
  88                            const GLfloat *src );
  89
  90
  91 extern void *_tnl_get_vertex( GLcontext *ctx, GLuint nr );
  92
  93
  94 /*
  95  */
  96 extern GLuint _tnl_install_attrs( GLcontext *ctx,
  97                                   const struct tnl_attr_map *map,
  98                                   GLuint nr, const GLfloat *vp,
  99                                   GLuint unpacked_size );
 100
 101
 102
 103
 104
 105 extern void _tnl_free_vertices( GLcontext *ctx );
 106
 107 extern void _tnl_init_vertices( GLcontext *ctx,
 108                                 GLuint vb_size,
 109                                 GLuint max_vertex_size );
 110
 111 extern void *_tnl_emit_vertices_to_buffer( GLcontext *ctx,
 112                                            GLuint start,
 113                                            GLuint end,
 114                                            void *dest );
 115
 116 extern void _tnl_build_vertices( GLcontext *ctx,
 117                                  GLuint start,
 118                                  GLuint end,
 119                                  GLuint newinputs );
 120
 121 extern void _tnl_invalidate_vertices( GLcontext *ctx, GLuint newinputs );
 122
 123 extern void _tnl_invalidate_vertex_state( GLcontext *ctx, GLuint new_state );
 124
 125
 126 #endif