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 const_vbuffers:5;
  68    struct draw_varient_element element[PIPE_MAX_ATTRIBS];
  69 };
  70
  71 struct draw_vs_varient;
  72
  73
  74 struct draw_vs_varient {
  75    struct draw_vs_varient_key key;
  76
  77    struct draw_vertex_shader *vs;
  78
  79    void (*set_buffer)( struct draw_vs_varient *,
  80                       unsigned i,
  81                       const void *ptr,
  82                       unsigned stride );
  83
  84    void (PIPE_CDECL *run_linear)( struct draw_vs_varient *shader,
  85                                   unsigned start,
  86                                   unsigned count,
  87                                   void *output_buffer );
  88
  89    void (PIPE_CDECL *run_elts)( struct draw_vs_varient *shader,
  90                                 const unsigned *elts,
  91                                 unsigned count,
  92                                 void *output_buffer );
  93
  94    void (*destroy)( struct draw_vs_varient * );
  95 };
  96
  97
  98 /**
  99  * Private version of the compiled vertex_shader
 100  */
 101 struct draw_vertex_shader {
 102    struct draw_context *draw;
 103
 104    /* This member will disappear shortly:
 105     */
 106    struct pipe_shader_state   state;
 107
 108    struct tgsi_shader_info info;
 109    unsigned position_output;
 110    unsigned edgeflag_output;
 111
 112    /* Extracted from shader:
 113     */
 114    const float (*immediates)[4];
 115
 116    /*
 117     */
 118    struct draw_vs_varient *varient[16];
 119    unsigned nr_varients;
 120    unsigned last_varient;
 121    struct draw_vs_varient *(*create_varient)( struct draw_vertex_shader *shader,
 122                                               const struct draw_vs_varient_key *key );
 123
 124
 125    void (*prepare)( struct draw_vertex_shader *shader,
 126                     struct draw_context *draw );
 127
 128    /* Run the shader - this interface will get cleaned up in the
 129     * future:
 130     */
 131    void (*run_linear)( struct draw_vertex_shader *shader,
 132                        const float (*input)[4],
 133                        float (*output)[4],
 134                        const float (*constants)[4],
 135                        unsigned count,
 136                        unsigned input_stride,
 137                        unsigned output_stride );
 138
 139
 140    void (*delete)( struct draw_vertex_shader * );
 141 };
 142
 143
 144 struct draw_vs_varient *
 145 draw_vs_lookup_varient( struct draw_vertex_shader *base,
 146                         const struct draw_vs_varient_key *key );
 147
 148
 149 /********************************************************************************
 150  * Internal functions:
 151  */
 152
 153 struct draw_vertex_shader *
 154 draw_create_vs_exec(struct draw_context *draw,
 155                     const struct pipe_shader_state *templ);
 156
 157 struct draw_vertex_shader *
 158 draw_create_vs_sse(struct draw_context *draw,
 159                    const struct pipe_shader_state *templ);
 160
 161 struct draw_vertex_shader *
 162 draw_create_vs_ppc(struct draw_context *draw,
 163                    const struct pipe_shader_state *templ);
 164
 165 struct draw_vertex_shader *
 166 draw_create_vs_llvm(struct draw_context *draw,
 167                     const struct pipe_shader_state *templ);
 168
 169
 170
 171 struct draw_vs_varient_key;
 172 struct draw_vertex_shader;
 173
 174 struct draw_vs_varient *draw_vs_varient_aos_sse( struct draw_vertex_shader *vs,
 175                                                  const struct draw_vs_varient_key *key );
 176
 177
 178
 179 /********************************************************************************
 180  * Helpers for vs implementations that don't do their own fetch/emit varients.
 181  * Means these can be shared between shaders.
 182  */
 183 struct translate;
 184 struct translate_key;
 185
 186 struct translate *draw_vs_get_fetch( struct draw_context *draw,
 187                                      struct translate_key *key );
 188
 189
 190 struct translate *draw_vs_get_emit( struct draw_context *draw,
 191                                     struct translate_key *key );
 192
 193 struct draw_vs_varient *draw_vs_varient_generic( struct draw_vertex_shader *vs,
 194                                                  const struct draw_vs_varient_key *key );
 195
 196
 197
 198 static INLINE int draw_vs_varient_keysize( const struct draw_vs_varient_key *key )
 199 {
 200    return 2 * sizeof(int) + key->nr_elements * sizeof(struct draw_varient_element);
 201 }
 202
 203 static INLINE int draw_vs_varient_key_compare( const struct draw_vs_varient_key *a,
 204                                          const struct draw_vs_varient_key *b )
 205 {
 206    int keysize = draw_vs_varient_keysize(a);
 207    return memcmp(a, b, keysize);
 208 }
 209
 210
 211 struct aos_machine *draw_vs_aos_machine( void );
 212 void draw_vs_aos_machine_destroy( struct aos_machine *machine );
 213
 214 void draw_vs_aos_machine_constants( struct aos_machine *machine,
 215                                     const float (*constants)[4] );
 216
 217 void draw_vs_aos_machine_viewport( struct aos_machine *machine,
 218                                    const struct pipe_viewport_state *viewport );
 219
 220
 221 #define MAX_TGSI_VERTICES 4
 222
 223
 224
 225 #endif