src/gallium/auxiliary/draw/draw_vs.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 /* Authors:  Keith Whitwell <keith@tungstengraphics.com>
  29  */
  30
  31 #ifndef DRAW_VS_H
  32 #define DRAW_VS_H
  33
  34 #include "draw_context.h"
  35 #include "draw_private.h"
  36
  37
  38 struct draw_context;
  39 struct pipe_shader_state;
  40
  41 struct draw_varient_input
  42 {
  43    enum pipe_format format;
  44    unsigned buffer;
  45    unsigned offset;
  46 };
  47
  48 struct draw_varient_output
  49 {
  50    enum pipe_format format;     /* output format */
  51    unsigned vs_output:8;        /* which vertex shader output is this? */
  52    unsigned offset:24;          /* offset into output vertex */
  53 };
  54
  55 struct draw_varient_element {
  56    struct draw_varient_input in;
  57    struct draw_varient_output out;
  58 };
  59
  60 struct draw_vs_varient_key {
  61    unsigned output_stride;
  62    unsigned nr_elements:8;      /* max2(nr_inputs, nr_outputs) */
  63    unsigned nr_inputs:8;
  64    unsigned nr_outputs:8;
  65    unsigned viewport:1;
  66    unsigned clip:1;
  67    unsigned pad:5;
  68    struct draw_varient_element element[PIPE_MAX_ATTRIBS];
  69 };
  70
  71 struct draw_vs_varient;
  72
  73 typedef void (PIPE_CDECL *vsv_run_elts_func)( struct draw_vs_varient *,
  74                                               const unsigned *elts,
  75                                               unsigned count,
  76                                               void *output_buffer);
  77
  78 typedef void (PIPE_CDECL *vsv_run_linear_func)( struct draw_vs_varient *,
  79                                                 unsigned start,
  80                                                 unsigned count,
  81                                                 void *output_buffer);
  82
  83
  84 struct draw_vs_varient {
  85    struct draw_vs_varient_key key;
  86
  87    struct draw_vertex_shader *vs;
  88
  89    void (*set_input)( struct draw_vs_varient *,
  90                       unsigned i,
  91                       const void *ptr,
  92                       unsigned stride );
  93
  94    void (*set_constants)( struct draw_vs_varient *,
  95                           const float (*constants)[4] );
  96
  97    void (*set_viewport)( struct draw_vs_varient *,
  98                          const struct pipe_viewport_state * );
  99
 100    void (PIPE_CDECL *run_linear)( struct draw_vs_varient *shader,
 101                                   unsigned start,
 102                                   unsigned count,
 103                                   void *output_buffer );
 104
 105    void (PIPE_CDECL *run_elts)( struct draw_vs_varient *shader,
 106                                 const unsigned *elts,
 107                                 unsigned count,
 108                                 void *output_buffer );
 109
 110    void (*destroy)( struct draw_vs_varient * );
 111 };
 112
 113
 114 /**
 115  * Private version of the compiled vertex_shader
 116  */
 117 struct draw_vertex_shader {
 118    struct draw_context *draw;
 119
 120    /* This member will disappear shortly:
 121     */
 122    struct pipe_shader_state   state;
 123
 124    struct tgsi_shader_info info;
 125
 126    /*
 127     */
 128    struct draw_vs_varient *varient[16];
 129    unsigned nr_varients;
 130    struct draw_vs_varient *(*create_varient)( struct draw_vertex_shader *shader,
 131                                               const struct draw_vs_varient_key *key );
 132
 133
 134    void (*prepare)( struct draw_vertex_shader *shader,
 135                     struct draw_context *draw );
 136
 137    /* Run the shader - this interface will get cleaned up in the
 138     * future:
 139     */
 140    void (*run_linear)( struct draw_vertex_shader *shader,
 141                        const float (*input)[4],
 142                        float (*output)[4],
 143                        const float (*constants)[4],
 144                        unsigned count,
 145                        unsigned input_stride,
 146                        unsigned output_stride );
 147
 148
 149    void (*delete)( struct draw_vertex_shader * );
 150 };
 151
 152
 153 struct draw_vs_varient *
 154 draw_vs_lookup_varient( struct draw_vertex_shader *base,
 155                         const struct draw_vs_varient_key *key );
 156
 157
 158 /********************************************************************************
 159  * Internal functions:
 160  */
 161
 162 struct draw_vertex_shader *
 163 draw_create_vs_exec(struct draw_context *draw,
 164                     const struct pipe_shader_state *templ);
 165
 166 struct draw_vertex_shader *
 167 draw_create_vs_sse(struct draw_context *draw,
 168                    const struct pipe_shader_state *templ);
 169
 170 struct draw_vertex_shader *
 171 draw_create_vs_llvm(struct draw_context *draw,
 172                     const struct pipe_shader_state *templ);
 173
 174
 175
 176 struct draw_vs_varient_key;
 177 struct draw_vertex_shader;
 178
 179 struct draw_vs_varient *draw_vs_varient_aos_sse( struct draw_vertex_shader *vs,
 180                                                  const struct draw_vs_varient_key *key );
 181
 182
 183
 184 /********************************************************************************
 185  * Helpers for vs implementations that don't do their own fetch/emit varients.
 186  * Means these can be shared between shaders.
 187  */
 188 struct translate;
 189 struct translate_key;
 190
 191 struct translate *draw_vs_get_fetch( struct draw_context *draw,
 192                                      struct translate_key *key );
 193
 194
 195 struct translate *draw_vs_get_emit( struct draw_context *draw,
 196                                     struct translate_key *key );
 197
 198 struct draw_vs_varient *draw_vs_varient_generic( struct draw_vertex_shader *vs,
 199                                                  const struct draw_vs_varient_key *key );
 200
 201
 202
 203 static INLINE int draw_vs_varient_keysize( const struct draw_vs_varient_key *key )
 204 {
 205    return 2 * sizeof(int) + key->nr_elements * sizeof(struct draw_varient_element);
 206 }
 207
 208 static INLINE int draw_vs_varient_key_compare( const struct draw_vs_varient_key *a,
 209                                          const struct draw_vs_varient_key *b )
 210 {
 211    int keysize = draw_vs_varient_keysize(a);
 212    return memcmp(a, b, keysize);
 213 }
 214
 215
 216
 217
 218
 219 #define MAX_TGSI_VERTICES 4
 220
 221
 222
 223 #endif