src/mesa/vf/vf.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 VF_VERTEX_H
  29 #define VF_VERTEX_H
  30
  31 #include "main/mtypes.h"
  32 #include "math/m_vector.h"
  33
  34 enum {
  35    VF_ATTRIB_POS = 0,
  36    VF_ATTRIB_WEIGHT = 1,
  37    VF_ATTRIB_NORMAL = 2,
  38    VF_ATTRIB_COLOR0 = 3,
  39    VF_ATTRIB_COLOR1 = 4,
  40    VF_ATTRIB_FOG = 5,
  41    VF_ATTRIB_COLOR_INDEX = 6,
  42    VF_ATTRIB_EDGEFLAG = 7,
  43    VF_ATTRIB_TEX0 = 8,
  44    VF_ATTRIB_TEX1 = 9,
  45    VF_ATTRIB_TEX2 = 10,
  46    VF_ATTRIB_TEX3 = 11,
  47    VF_ATTRIB_TEX4 = 12,
  48    VF_ATTRIB_TEX5 = 13,
  49    VF_ATTRIB_TEX6 = 14,
  50    VF_ATTRIB_TEX7 = 15,
  51    VF_ATTRIB_VAR0 = 16,
  52    VF_ATTRIB_VAR1 = 17,
  53    VF_ATTRIB_VAR2 = 18,
  54    VF_ATTRIB_VAR3 = 19,
  55    VF_ATTRIB_VAR4 = 20,
  56    VF_ATTRIB_VAR5 = 21,
  57    VF_ATTRIB_VAR6 = 22,
  58    VF_ATTRIB_VAR7 = 23,
  59    VF_ATTRIB_POINTSIZE = 24,
  60    VF_ATTRIB_BFC0 = 25,
  61    VF_ATTRIB_BFC1 = 26,
  62    VF_ATTRIB_CLIP_POS = 27,
  63    VF_ATTRIB_VERTEX_HEADER = 28,
  64    VF_ATTRIB_MAX = 29
  65 };
  66
  67
  68 enum vf_attr_format {
  69    EMIT_1F,
  70    EMIT_2F,
  71    EMIT_3F,
  72    EMIT_4F,
  73    EMIT_2F_VIEWPORT,            /* do viewport transform and emit */
  74    EMIT_3F_VIEWPORT,            /* do viewport transform and emit */
  75    EMIT_4F_VIEWPORT,            /* do viewport transform and emit */
  76    EMIT_3F_XYW,                 /* for projective texture */
  77    EMIT_1UB_1F,                 /* for fog coordinate */
  78    EMIT_3UB_3F_RGB,             /* for specular color */
  79    EMIT_3UB_3F_BGR,             /* for specular color */
  80    EMIT_4UB_4F_RGBA,            /* for color */
  81    EMIT_4UB_4F_BGRA,            /* for color */
  82    EMIT_4UB_4F_ARGB,            /* for color */
  83    EMIT_4UB_4F_ABGR,            /* for color */
  84    EMIT_4CHAN_4F_RGBA,          /* for swrast color */
  85    EMIT_PAD,                    /* leave a hole of 'offset' bytes */
  86    EMIT_MAX
  87 };
  88
  89 struct vf_attr_map {
  90    GLuint attrib;
  91    enum vf_attr_format format;
  92    GLuint offset;
  93 };
  94
  95 struct vertex_fetch;
  96
  97 void vf_set_vp_matrix( struct vertex_fetch *vf,
  98                       const GLfloat *viewport );
  99
 100 void vf_set_vp_scale_translate( struct vertex_fetch *vf,
 101                                 const GLfloat *scale,
 102                                 const GLfloat *translate );
 103
 104 GLuint vf_set_vertex_attributes( struct vertex_fetch *vf,
 105                                  const struct vf_attr_map *map,
 106                                  GLuint nr,
 107                                  GLuint vertex_stride );
 108
 109 void vf_set_sources( struct vertex_fetch *vf,
 110                      GLvector4f * const attrib[],
 111                      GLuint start );
 112
 113 void vf_emit_vertices( struct vertex_fetch *vf,
 114                        GLuint count,
 115                        void *dest );
 116
 117 void vf_get_attr( struct vertex_fetch *vf,
 118                   const void *vertex,
 119                   GLenum attr,
 120                   const GLfloat *dflt,
 121                   GLfloat *dest );
 122
 123 struct vertex_fetch *vf_create( GLboolean allow_viewport_emits );
 124
 125 void vf_destroy( struct vertex_fetch *vf );
 126
 127
 128
 129 /***********************************************************************
 130  * Internal functions and structs:
 131  */
 132
 133 struct vf_attr;
 134
 135 typedef void (*vf_extract_func)( const struct vf_attr *a,
 136                                  GLfloat *out,
 137                                  const GLubyte *v );
 138
 139 typedef void (*vf_insert_func)( const struct vf_attr *a,
 140                                 GLubyte *v,
 141                                 const GLfloat *in );
 142
 143 typedef void (*vf_emit_func)( struct vertex_fetch *vf,
 144                               GLuint count,
 145                               GLubyte *dest );
 146
 147
 148
 149 /* Describes how to convert/move a vertex attribute from a vertex
 150  * array to a vertex structure.
 151  */
 152 struct vf_attr
 153 {
 154    struct vertex_fetch *vf;
 155
 156    GLuint format;
 157    GLuint inputsize;
 158    GLuint inputstride;
 159    GLuint vertoffset;      /* position of the attrib in the vertex struct */
 160
 161    GLuint attrib;          /* which vertex attrib (0=position, etc) */
 162    GLuint vertattrsize;    /* size of the attribute in bytes */
 163
 164    GLubyte *inputptr;
 165    const vf_insert_func *insert;
 166    vf_insert_func do_insert;
 167    vf_extract_func extract;
 168 };
 169
 170 struct vertex_fetch
 171 {
 172    struct vf_attr attr[VF_ATTRIB_MAX];
 173    GLuint attr_count;
 174    GLuint vertex_stride;
 175
 176    struct vf_attr *lookup[VF_ATTRIB_MAX];
 177
 178    vf_emit_func emit;
 179
 180    /* Parameters and constants for codegen:
 181     */
 182    GLboolean allow_viewport_emits;
 183    GLfloat vp[8];
 184    GLfloat chan_scale[4];
 185    GLfloat identity[4];
 186
 187    struct vf_fastpath *fastpath;
 188
 189    void (*codegen_emit)( struct vertex_fetch *vf );
 190 };
 191
 192
 193 struct vf_attr_type {
 194    GLuint format;
 195    GLuint size;
 196    GLuint stride;
 197    GLuint offset;
 198 };
 199
 200 struct vf_fastpath {
 201    GLuint vertex_stride;
 202    GLuint attr_count;
 203    GLboolean match_strides;
 204
 205    struct vf_attr_type *attr;
 206
 207    vf_emit_func func;
 208    struct vf_fastpath *next;
 209 };
 210
 211
 212 void vf_register_fastpath( struct vertex_fetch *vtx,
 213                              GLboolean match_strides );
 214
 215 void vf_generic_emit( struct vertex_fetch *vf,
 216                         GLuint count,
 217                         GLubyte *v );
 218
 219 void vf_generate_hardwired_emit( struct vertex_fetch *vf );
 220
 221 void vf_generate_sse_emit( struct vertex_fetch *vf );
 222
 223
 224 struct vf_format_info {
 225    const char *name;
 226    vf_extract_func extract;
 227    vf_insert_func insert[4];
 228    const GLuint attrsize;
 229 };
 230
 231 const struct vf_format_info vf_format_info[EMIT_MAX];
 232
 233
 234 #endif