src/mesa/state_tracker/st_program.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 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  /*
  29   * Authors:
  30   *   Keith Whitwell <keith@tungstengraphics.com>
  31   */
  32
  33
  34 #ifndef ST_PROGRAM_H
  35 #define ST_PROGRAM_H
  36
  37 #include "main/mtypes.h"
  38 #include "shader/program.h"
  39 #include "pipe/p_shader_tokens.h"
  40
  41
  42 struct cso_fragment_shader;
  43 struct cso_vertex_shader;
  44 struct translated_vertex_program;
  45
  46
  47 /**
  48  * Derived from Mesa gl_fragment_program:
  49  */
  50 struct st_fragment_program
  51 {
  52    struct gl_fragment_program Base;
  53    GLuint serialNo;
  54
  55    GLuint input_to_slot[FRAG_ATTRIB_MAX];  /**< Maps FRAG_ATTRIB_x to slot */
  56    GLuint num_input_slots;
  57
  58    /** map FP input back to VP output */
  59    GLuint input_map[PIPE_MAX_SHADER_INPUTS];
  60
  61    ubyte input_semantic_name[PIPE_MAX_SHADER_INPUTS];
  62    ubyte input_semantic_index[PIPE_MAX_SHADER_INPUTS];
  63
  64    struct pipe_shader_state state;
  65    void *driver_shader;
  66
  67    /** Program prefixed with glBitmap prologue */
  68    struct st_fragment_program *bitmap_program;
  69    uint bitmap_sampler;
  70 };
  71
  72
  73
  74 struct st_vp_varient_key
  75 {
  76    boolean passthrough_edgeflags;
  77 };
  78
  79
  80 /**
  81  * This represents a vertex program, especially translated to match
  82  * the inputs of a particular fragment shader.
  83  */
  84 struct st_vp_varient
  85 {
  86    /* Parameters which generated this translated version of a vertex
  87     * shader:
  88     */
  89    struct st_vp_varient_key key;
  90
  91    /** TGSI tokens -- why?
  92     */
  93    struct pipe_shader_state state;
  94
  95    /** Driver's compiled shader */
  96    void *driver_shader;
  97
  98    /** For using our private draw module (glRasterPos) */
  99    struct draw_vertex_shader *draw_shader;
 100
 101    /** Next in linked list */
 102    struct st_vp_varient *next;
 103
 104    /** similar to that in st_vertex_program, but with information about edgeflags too */
 105    GLuint num_inputs;
 106 };
 107
 108
 109
 110
 111 /**
 112  * Derived from Mesa gl_fragment_program:
 113  */
 114 struct st_vertex_program
 115 {
 116    struct gl_vertex_program Base;  /**< The Mesa vertex program */
 117    GLuint serialNo, lastSerialNo;
 118
 119    /** maps a Mesa VERT_ATTRIB_x to a packed TGSI input index */
 120    GLuint input_to_index[VERT_ATTRIB_MAX];
 121    /** maps a TGSI input index back to a Mesa VERT_ATTRIB_x */
 122    GLuint index_to_input[PIPE_MAX_SHADER_INPUTS];
 123    GLuint num_inputs;
 124
 125    /** Maps VERT_RESULT_x to slot */
 126    GLuint result_to_output[VERT_RESULT_MAX];
 127    ubyte output_semantic_name[VERT_RESULT_MAX];
 128    ubyte output_semantic_index[VERT_RESULT_MAX];
 129    GLuint num_outputs;
 130
 131    /** List of translated varients of this vertex program.
 132     */
 133    struct st_vp_varient *varients;
 134 };
 135
 136
 137 static INLINE struct st_fragment_program *
 138 st_fragment_program( struct gl_fragment_program *fp )
 139 {
 140    return (struct st_fragment_program *)fp;
 141 }
 142
 143
 144 static INLINE struct st_vertex_program *
 145 st_vertex_program( struct gl_vertex_program *vp )
 146 {
 147    return (struct st_vertex_program *)vp;
 148 }
 149
 150
 151 static INLINE void
 152 st_reference_vertprog(struct st_context *st,
 153                       struct st_vertex_program **ptr,
 154                       struct st_vertex_program *prog)
 155 {
 156    _mesa_reference_program(st->ctx,
 157                            (struct gl_program **) ptr,
 158                            (struct gl_program *) prog);
 159 }
 160
 161 static INLINE void
 162 st_reference_fragprog(struct st_context *st,
 163                       struct st_fragment_program **ptr,
 164                       struct st_fragment_program *prog)
 165 {
 166    _mesa_reference_program(st->ctx,
 167                            (struct gl_program **) ptr,
 168                            (struct gl_program *) prog);
 169 }
 170
 171
 172 extern void
 173 st_translate_fragment_program(struct st_context *st,
 174                               struct st_fragment_program *fp,
 175                               const GLuint inputMapping[]);
 176
 177
 178 /* Called after program string change, discard all previous
 179  * compilation results.
 180  */
 181 extern void
 182 st_prepare_vertex_program(struct st_context *st,
 183                           struct st_vertex_program *stvp);
 184
 185 extern struct st_vp_varient *
 186 st_translate_vertex_program(struct st_context *st,
 187                             struct st_vertex_program *stvp,
 188                             const struct st_vp_varient_key *key);
 189
 190 void
 191 st_vp_release_varients( struct st_context *st,
 192                         struct st_vertex_program *stvp );
 193
 194 extern void
 195 st_print_shaders(GLcontext *ctx);
 196
 197
 198 #endif