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