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    struct pipe_shader_state tgsi;
  56    void *driver_shader;
  57
  58    /** Program prefixed with glBitmap prologue */
  59    struct st_fragment_program *bitmap_program;
  60    uint bitmap_sampler;
  61 };
  62
  63
  64
  65 struct st_vp_varient_key
  66 {
  67    boolean passthrough_edgeflags;
  68 };
  69
  70
  71 /**
  72  * This represents a vertex program, especially translated to match
  73  * the inputs of a particular fragment shader.
  74  */
  75 struct st_vp_varient
  76 {
  77    /* Parameters which generated this translated version of a vertex
  78     * shader:
  79     */
  80    struct st_vp_varient_key key;
  81
  82    /**
  83     * TGSI tokens (to later generate a 'draw' module shader for
  84     * selection/feedback/rasterpos)
  85     */
  86    struct pipe_shader_state tgsi;
  87
  88    /** Driver's compiled shader */
  89    void *driver_shader;
  90
  91    /** For using our private draw module (glRasterPos) */
  92    struct draw_vertex_shader *draw_shader;
  93
  94    /** Next in linked list */
  95    struct st_vp_varient *next;
  96
  97    /** similar to that in st_vertex_program, but with information about edgeflags too */
  98    GLuint num_inputs;
  99 };
 100
 101
 102
 103
 104 /**
 105  * Derived from Mesa gl_fragment_program:
 106  */
 107 struct st_vertex_program
 108 {
 109    struct gl_vertex_program Base;  /**< The Mesa vertex program */
 110    GLuint serialNo, lastSerialNo;
 111
 112    /** maps a Mesa VERT_ATTRIB_x to a packed TGSI input index */
 113    GLuint input_to_index[VERT_ATTRIB_MAX];
 114    /** maps a TGSI input index back to a Mesa VERT_ATTRIB_x */
 115    GLuint index_to_input[PIPE_MAX_SHADER_INPUTS];
 116    GLuint num_inputs;
 117
 118    /** Maps VERT_RESULT_x to slot */
 119    GLuint result_to_output[VERT_RESULT_MAX];
 120    ubyte output_semantic_name[VERT_RESULT_MAX];
 121    ubyte output_semantic_index[VERT_RESULT_MAX];
 122    GLuint num_outputs;
 123
 124    /** List of translated varients of this vertex program.
 125     */
 126    struct st_vp_varient *varients;
 127 };
 128
 129
 130 static INLINE struct st_fragment_program *
 131 st_fragment_program( struct gl_fragment_program *fp )
 132 {
 133    return (struct st_fragment_program *)fp;
 134 }
 135
 136
 137 static INLINE struct st_vertex_program *
 138 st_vertex_program( struct gl_vertex_program *vp )
 139 {
 140    return (struct st_vertex_program *)vp;
 141 }
 142
 143
 144 static INLINE void
 145 st_reference_vertprog(struct st_context *st,
 146                       struct st_vertex_program **ptr,
 147                       struct st_vertex_program *prog)
 148 {
 149    _mesa_reference_program(st->ctx,
 150                            (struct gl_program **) ptr,
 151                            (struct gl_program *) prog);
 152 }
 153
 154 static INLINE void
 155 st_reference_fragprog(struct st_context *st,
 156                       struct st_fragment_program **ptr,
 157                       struct st_fragment_program *prog)
 158 {
 159    _mesa_reference_program(st->ctx,
 160                            (struct gl_program **) ptr,
 161                            (struct gl_program *) prog);
 162 }
 163
 164
 165 extern void
 166 st_translate_fragment_program(struct st_context *st,
 167                               struct st_fragment_program *fp);
 168
 169
 170 /* Called after program string change, discard all previous
 171  * compilation results.
 172  */
 173 extern void
 174 st_prepare_vertex_program(struct st_context *st,
 175                           struct st_vertex_program *stvp);
 176
 177 extern struct st_vp_varient *
 178 st_translate_vertex_program(struct st_context *st,
 179                             struct st_vertex_program *stvp,
 180                             const struct st_vp_varient_key *key);
 181
 182 void
 183 st_vp_release_varients( struct st_context *st,
 184                         struct st_vertex_program *stvp );
 185
 186 extern void
 187 st_print_shaders(GLcontext *ctx);
 188
 189
 190 #endif