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  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. #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 wierd 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
  185.