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    unsigned instance_divisor;
  47 };
  48
  49 struct draw_varient_output
  50 {
  51    enum pipe_format format;     /* output format */
  52    unsigned vs_output:8;        /* which vertex shader output is this? */
  53    unsigned offset:24;          /* offset into output vertex */
  54 };
  55
  56 struct draw_varient_element {
  57    struct draw_varient_input in;
  58    struct draw_varient_output out;
  59 };
  60
  61 struct draw_vs_varient_key {
  62    unsigned output_stride;
  63    unsigned nr_elements:8;      /* max2(nr_inputs, nr_outputs) */
  64    unsigned nr_inputs:8;
  65    unsigned nr_outputs:8;
  66    unsigned viewport:1;
  67    unsigned clip:1;
  68    unsigned const_vbuffers:5;
  69    struct draw_varient_element element[PIPE_MAX_ATTRIBS];
  70 };
  71
  72 struct draw_vs_varient;
  73
  74
  75 struct draw_vs_varient {
  76    struct draw_vs_varient_key key;
  77
  78    struct draw_vertex_shader *vs;
  79
  80    void (*set_buffer)( struct draw_vs_varient *,
  81                       unsigned i,
  82                       const void *ptr,
  83                       unsigned stride );
  84
  85    void (PIPE_CDECL *run_linear)( struct draw_vs_varient *shader,
  86                                   unsigned start,
  87                                   unsigned count,
  88                                   void *output_buffer );
  89
  90    void (PIPE_CDECL *run_elts)( struct draw_vs_varient *shader,
  91                                 const unsigned *elts,
  92                                 unsigned count,
  93                                 void *output_buffer );
  94
  95    void (*destroy)( struct draw_vs_varient * );
  96 };
  97
  98
  99 /**
 100  * Private version of the compiled vertex_shader
 101  */
 102 struct draw_vertex_shader {
 103    struct draw_context *draw;
 104
 105    /* This member will disappear shortly:
 106     */
 107    struct pipe_shader_state   state;
 108
 109    struct tgsi_shader_info info;
 110    unsigned position_output;
 111    unsigned edgeflag_output;
 112
 113    /* Extracted from shader:
 114     */
 115    const float (*immediates)[4];
 116
 117    /*
 118     */
 119    struct draw_vs_varient *varient[16];
 120    unsigned nr_varients;
 121    unsigned last_varient;
 122    struct draw_vs_varient *(*create_varient)( struct draw_vertex_shader *shader,
 123                                               const struct draw_vs_varient_key *key );
 124
 125
 126    void (*prepare)( struct draw_vertex_shader *shader,
 127                     struct draw_context *draw );
 128
 129    /* Run the shader - this interface will get cleaned up in the
 130     * future:
 131     */
 132    void (*run_linear)( struct draw_vertex_shader *shader,
 133                        const float (*input)[4],
 134                        float (*output)[4],
 135                        const float (*constants)[4],
 136                        unsigned count,
 137                        unsigned input_stride,
 138                        unsigned output_stride );
 139
 140
 141    void (*delete)( struct draw_vertex_shader * );
 142 };
 143
 144
 145 struct draw_vs_varient *
 146 draw_vs_lookup_varient( struct draw_vertex_shader *base,
 147                         const struct draw_vs_varient_key *key );
 148
 149
 150 /********************************************************************************
 151  * Internal functions:
 152  */
 153
 154 struct draw_vertex_shader *
 155 draw_create_vs_exec(struct draw_context *draw,
 156                     const struct pipe_shader_state *templ);
 157
 158 struct draw_vertex_shader *
 159 draw_create_vs_sse(struct draw_context *draw,
 160                    const struct pipe_shader_state *templ);
 161
 162 struct draw_vertex_shader *
 163 draw_create_vs_ppc(struct draw_context *draw,
 164                    const struct pipe_shader_state *templ);
 165
 166 struct draw_vertex_shader *
 167 draw_create_vs_llvm(struct draw_context *draw,
 168                     const struct pipe_shader_state *templ);
 169
 170
 171
 172 struct draw_vs_varient_key;
 173 struct draw_vertex_shader;
 174
 175 struct draw_vs_varient *draw_vs_varient_aos_sse( struct draw_vertex_shader *vs,
 176                                                  const struct draw_vs_varient_key *key );
 177
 178
 179
 180 /********************************************************************************
 181  * Helpers for vs implementations that don't do their own fetch/emit varients.
 182  * Means these can be shared between shaders.
 183  */
 184 struct translate;
 185 struct translate_key;
 186
 187 struct translate *draw_vs_get_fetch( struct draw_context *draw,
 188                                      struct translate_key *key );
 189
 190
 191 struct translate *draw_vs_get_emit( struct draw_context *draw,
 192                                     struct translate_key *key );
 193
 194 struct draw_vs_varient *draw_vs_varient_generic( struct draw_vertex_shader *vs,
 195                                                  const struct draw_vs_varient_key *key );
 196
 197
 198
 199 static INLINE int draw_vs_varient_keysize( const struct draw_vs_varient_key *key )
 200 {
 201    return 2 * sizeof(int) + key->nr_elements * sizeof(struct draw_varient_element);
 202 }
 203
 204 static INLINE int draw_vs_varient_key_compare( const struct draw_vs_varient_key *a,
 205                                          const struct draw_vs_varient_key *b )
 206 {
 207    int keysize = draw_vs_varient_keysize(a);
 208    return memcmp(a, b, keysize);
 209 }
 210
 211
 212 struct aos_machine *draw_vs_aos_machine( void );
 213 void draw_vs_aos_machine_destroy( struct aos_machine *machine );
 214
 215 void draw_vs_aos_machine_constants( struct aos_machine *machine,
 216                                     const float (*constants)[4] );
 217
 218 void draw_vs_aos_machine_viewport( struct aos_machine *machine,
 219                                    const struct pipe_viewport_state *viewport );
 220
 221
 222 #define MAX_TGSI_VERTICES 4
 223
 224
 225
 226 #endif