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