src/mesa/tnl/t_vertex.h

   1 /*
   2  * Copyright 2003 VMware, 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  * VMWARE 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@vmware.com>
  26  */
  27
  28 #ifndef _TNL_VERTEX_H
  29 #define _TNL_VERTEX_H
  30
  31 #include "main/glheader.h"
  32 #include "t_context.h"
  33
  34 struct gl_context;
  35 struct tnl_clipspace;
  36
  37 /* New mechanism to specify hardware vertices so that tnl can build
  38  * and manipulate them directly.
  39  */
  40
  41
  42 /* It will probably be necessary to allow drivers to specify new
  43  * emit-styles to cover all the weird and wacky things out there.
  44  */
  45 enum tnl_attr_format {
  46    EMIT_1F,
  47    EMIT_2F,
  48    EMIT_3F,
  49    EMIT_4F,
  50    EMIT_2F_VIEWPORT,            /* do viewport transform and emit */
  51    EMIT_3F_VIEWPORT,            /* do viewport transform and emit */
  52    EMIT_4F_VIEWPORT,            /* do viewport transform and emit */
  53    EMIT_3F_XYW,                 /* for projective texture */
  54    EMIT_1UB_1F,                 /* for fog coordinate */
  55    EMIT_3UB_3F_RGB,             /* for specular color */
  56    EMIT_3UB_3F_BGR,             /* for specular color */
  57    EMIT_4UB_4F_RGBA,            /* for color */
  58    EMIT_4UB_4F_BGRA,            /* for color */
  59    EMIT_4UB_4F_ARGB,            /* for color */
  60    EMIT_4UB_4F_ABGR,            /* for color */
  61    EMIT_4CHAN_4F_RGBA,          /* for swrast color */
  62    EMIT_PAD,                    /* leave a hole of 'offset' bytes */
  63    EMIT_MAX
  64 };
  65
  66 struct tnl_attr_map {
  67    GLuint attrib;                       /* _TNL_ATTRIB_ enum */
  68    enum tnl_attr_format format;
  69    GLuint offset;
  70 };
  71
  72 struct tnl_format_info {
  73    const char *name;
  74    tnl_extract_func extract;
  75    tnl_insert_func insert[4];
  76    const GLuint attrsize;
  77 };
  78
  79 extern const struct tnl_format_info _tnl_format_info[EMIT_MAX];
  80
  81
  82 /* Interpolate between two vertices to produce a third:
  83  */
  84 extern void _tnl_interp( struct gl_context *ctx,
  85                          GLfloat t,
  86                          GLuint edst, GLuint eout, GLuint ein,
  87                          GLboolean force_boundary );
  88
  89 /* Copy colors from one vertex to another:
  90  */
  91 extern void _tnl_copy_pv(  struct gl_context *ctx, GLuint edst, GLuint esrc );
  92
  93
  94 /* Extract a named attribute from a hardware vertex.  Will have to
  95  * reverse any viewport transformation, swizzling or other conversions
  96  * which may have been applied:
  97  */
  98 extern void _tnl_get_attr( struct gl_context *ctx, const void *vertex, GLenum attrib,
  99                            GLfloat *dest );
 100
 101 /* Complementary to the above.
 102  */
 103 extern void _tnl_set_attr( struct gl_context *ctx, void *vout, GLenum attrib,
 104                            const GLfloat *src );
 105
 106
 107 extern void *_tnl_get_vertex( struct gl_context *ctx, GLuint nr );
 108
 109 extern GLuint _tnl_install_attrs( struct gl_context *ctx,
 110                                   const struct tnl_attr_map *map,
 111                                   GLuint nr, const GLfloat *vp,
 112                                   GLuint unpacked_size );
 113
 114 extern void _tnl_free_vertices( struct gl_context *ctx );
 115
 116 extern void _tnl_init_vertices( struct gl_context *ctx,
 117                                 GLuint vb_size,
 118                                 GLuint max_vertex_size );
 119
 120 extern void *_tnl_emit_vertices_to_buffer( struct gl_context *ctx,
 121                                            GLuint start,
 122                                            GLuint end,
 123                                            void *dest );
 124
 125 /* This function isn't optimal. Check out
 126  * gallium/auxilary/translate for a more comprehensive implementation of
 127  * the same functionality.
 128  */
 129
 130 extern void *_tnl_emit_indexed_vertices_to_buffer( struct gl_context *ctx,
 131                                                    const GLuint *elts,
 132                                                    GLuint start,
 133                                                    GLuint end,
 134                                                    void *dest );
 135
 136
 137 extern void _tnl_build_vertices( struct gl_context *ctx,
 138                                  GLuint start,
 139                                  GLuint end,
 140                                  GLuint newinputs );
 141
 142 extern void _tnl_invalidate_vertices( struct gl_context *ctx, GLuint newinputs );
 143
 144 extern void _tnl_invalidate_vertex_state( struct gl_context *ctx, GLuint new_state );
 145
 146 extern void _tnl_notify_pipeline_output_change( struct gl_context *ctx );
 147
 148
 149 #define GET_VERTEX_STATE(ctx)  &(TNL_CONTEXT(ctx)->clipspace)
 150
 151 /* Internal function:
 152  */
 153 void _tnl_register_fastpath( struct tnl_clipspace *vtx,
 154                              GLboolean match_strides );
 155
 156
 157 /* t_vertex_generic.c -- Internal functions for t_vertex.c
 158  */
 159 void _tnl_generic_copy_pv_extras( struct gl_context *ctx,
 160                                   GLuint dst, GLuint src );
 161
 162 void _tnl_generic_interp_extras( struct gl_context *ctx,
 163                                  GLfloat t,
 164                                  GLuint dst, GLuint out, GLuint in,
 165                                  GLboolean force_boundary );
 166
 167 void _tnl_generic_copy_pv( struct gl_context *ctx, GLuint edst, GLuint esrc );
 168
 169 void _tnl_generic_interp( struct gl_context *ctx,
 170                           GLfloat t,
 171                           GLuint edst, GLuint eout, GLuint ein,
 172                           GLboolean force_boundary );
 173
 174 void _tnl_generic_emit( struct gl_context *ctx,
 175                         GLuint count,
 176                         GLubyte *v );
 177
 178 void _tnl_generate_hardwired_emit( struct gl_context *ctx );
 179
 180 /* t_vertex_sse.c -- Internal functions for t_vertex.c
 181  */
 182 void _tnl_generate_sse_emit( struct gl_context *ctx );
 183
 184 #endif