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