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 "mtypes.h"
  38 #include "pipe/p_shader_tokens.h"
  39
  40
  41 #define ST_MAX_SHADER_TOKENS 1024
  42
  43
  44 struct cso_fragment_shader;
  45 struct cso_vertex_shader;
  46 struct translated_vertex_program;
  47
  48
  49 /**
  50  * Derived from Mesa gl_fragment_program:
  51  */
  52 struct st_fragment_program
  53 {
  54    struct gl_fragment_program Base;
  55    GLuint serialNo;
  56
  57    GLuint input_to_slot[FRAG_ATTRIB_MAX];  /**< Maps FRAG_ATTRIB_x to slot */
  58    GLuint num_input_slots;
  59
  60    /** map FP input back to VP output */
  61    GLuint input_map[PIPE_MAX_SHADER_INPUTS];
  62
  63    struct pipe_shader_state state;
  64    struct pipe_shader_state *driver_shader;
  65
  66    GLuint param_state;
  67
  68    /** List of vertex programs which have been translated such that their
  69     * outputs match this fragment program's inputs.
  70     */
  71    struct translated_vertex_program *vertex_programs;
  72 };
  73
  74
  75 /**
  76  * Derived from Mesa gl_fragment_program:
  77  */
  78 struct st_vertex_program
  79 {
  80    struct gl_vertex_program Base;  /**< The Mesa vertex program */
  81    GLuint serialNo;
  82
  83    /** maps a Mesa VERT_ATTRIB_x to a packed TGSI input index */
  84    GLuint input_to_index[VERT_ATTRIB_MAX];
  85    /** maps a TGSI input index back to a Mesa VERT_ATTRIB_x */
  86    GLuint index_to_input[PIPE_MAX_SHADER_INPUTS];
  87
  88    struct pipe_shader_state state;
  89    struct pipe_shader_state *driver_shader;
  90
  91    /** For using our private draw module (glRasterPos) */
  92    struct draw_vertex_shader *draw_shader;
  93
  94    GLuint param_state;
  95 };
  96
  97
  98 extern void
  99 st_init_program_functions(struct dd_function_table *functions);
 100
 101
 102 static inline struct st_fragment_program *
 103 st_fragment_program( struct gl_fragment_program *fp )
 104 {
 105    return (struct st_fragment_program *)fp;
 106 }
 107
 108
 109 static inline struct st_vertex_program *
 110 st_vertex_program( struct gl_vertex_program *vp )
 111 {
 112    return (struct st_vertex_program *)vp;
 113 }
 114
 115
 116 extern const struct cso_fragment_shader *
 117 st_translate_fragment_program(struct st_context *st,
 118                               struct st_fragment_program *fp,
 119                               const GLuint inputMapping[]);
 120
 121
 122 extern void
 123 st_translate_vertex_program(struct st_context *st,
 124                             struct st_vertex_program *vp,
 125                             const GLuint vert_output_to_slot[]);
 126
 127 #endif