src/mesa/state_tracker/st_program.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 VMware, Inc.
   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 VMWARE 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 <keithw@vmware.com>
  31   */
  32
  33
  34 #ifndef ST_PROGRAM_H
  35 #define ST_PROGRAM_H
  36
  37 #include "main/mtypes.h"
  38 #include "program/program.h"
  39 #include "pipe/p_state.h"
  40 #include "st_context.h"
  41 #include "st_glsl_to_tgsi.h"
  42
  43
  44 /** Fragment program variant key */
  45 struct st_fp_variant_key
  46 {
  47    struct st_context *st;         /**< variants are per-context */
  48
  49    /** for glBitmap */
  50    GLuint bitmap:1;               /**< glBitmap variant? */
  51
  52    /** for glDrawPixels */
  53    GLuint drawpixels:1;           /**< glDrawPixels variant */
  54    GLuint scaleAndBias:1;         /**< glDrawPixels w/ scale and/or bias? */
  55    GLuint pixelMaps:1;            /**< glDrawPixels w/ pixel lookup map? */
  56    GLuint drawpixels_z:1;         /**< glDrawPixels(GL_DEPTH) */
  57    GLuint drawpixels_stencil:1;   /**< glDrawPixels(GL_STENCIL) */
  58
  59    /** for ARB_color_buffer_float */
  60    GLuint clamp_color:1;
  61
  62    /** for ARB_sample_shading */
  63    GLuint persample_shading:1;
  64 };
  65
  66
  67 /**
  68  * Variant of a fragment program.
  69  */
  70 struct st_fp_variant
  71 {
  72    /** Parameters which generated this version of fragment program */
  73    struct st_fp_variant_key key;
  74
  75    struct pipe_shader_state tgsi;
  76
  77    /** Driver's compiled shader */
  78    void *driver_shader;
  79
  80    /** For glBitmap variants */
  81    struct gl_program_parameter_list *parameters;
  82    uint bitmap_sampler;
  83
  84    /** next in linked list */
  85    struct st_fp_variant *next;
  86 };
  87
  88
  89 /**
  90  * Derived from Mesa gl_fragment_program:
  91  */
  92 struct st_fragment_program
  93 {
  94    struct gl_fragment_program Base;
  95    struct glsl_to_tgsi_visitor* glsl_to_tgsi;
  96
  97    struct st_fp_variant *variants;
  98 };
  99
 100
 101
 102 /** Vertex program variant key */
 103 struct st_vp_variant_key
 104 {
 105    struct st_context *st;          /**< variants are per-context */
 106    boolean passthrough_edgeflags;
 107
 108    /** for ARB_color_buffer_float */
 109    boolean clamp_color;
 110 };
 111
 112
 113 /**
 114  * This represents a vertex program, especially translated to match
 115  * the inputs of a particular fragment shader.
 116  */
 117 struct st_vp_variant
 118 {
 119    /* Parameters which generated this translated version of a vertex
 120     * shader:
 121     */
 122    struct st_vp_variant_key key;
 123
 124    /**
 125     * TGSI tokens (to later generate a 'draw' module shader for
 126     * selection/feedback/rasterpos)
 127     */
 128    struct pipe_shader_state tgsi;
 129
 130    /** Driver's compiled shader */
 131    void *driver_shader;
 132
 133    /** For using our private draw module (glRasterPos) */
 134    struct draw_vertex_shader *draw_shader;
 135
 136    /** Next in linked list */
 137    struct st_vp_variant *next;
 138
 139    /** similar to that in st_vertex_program, but with edgeflags info too */
 140    GLuint num_inputs;
 141 };
 142
 143
 144 /**
 145  * Derived from Mesa gl_fragment_program:
 146  */
 147 struct st_vertex_program
 148 {
 149    struct gl_vertex_program Base;  /**< The Mesa vertex program */
 150    struct glsl_to_tgsi_visitor* glsl_to_tgsi;
 151
 152    /** maps a Mesa VERT_ATTRIB_x to a packed TGSI input index */
 153    GLuint input_to_index[VERT_ATTRIB_MAX];
 154    /** maps a TGSI input index back to a Mesa VERT_ATTRIB_x */
 155    GLuint index_to_input[PIPE_MAX_SHADER_INPUTS];
 156    GLuint num_inputs;
 157
 158    /** Maps VARYING_SLOT_x to slot */
 159    GLuint result_to_output[VARYING_SLOT_MAX];
 160    ubyte output_semantic_name[VARYING_SLOT_MAX];
 161    ubyte output_semantic_index[VARYING_SLOT_MAX];
 162    GLuint num_outputs;
 163
 164    /** List of translated variants of this vertex program.
 165     */
 166    struct st_vp_variant *variants;
 167 };
 168
 169
 170
 171 /** Geometry program variant key */
 172 struct st_gp_variant_key
 173 {
 174    struct st_context *st;          /**< variants are per-context */
 175    /* no other fields yet */
 176 };
 177
 178
 179 /**
 180  * Geometry program variant.
 181  */
 182 struct st_gp_variant
 183 {
 184    /* Parameters which generated this translated version of a vertex */
 185    struct st_gp_variant_key key;
 186
 187    void *driver_shader;
 188
 189    struct st_gp_variant *next;
 190 };
 191
 192
 193 /**
 194  * Derived from Mesa gl_geometry_program:
 195  */
 196 struct st_geometry_program
 197 {
 198    struct gl_geometry_program Base;  /**< The Mesa geometry program */
 199    struct glsl_to_tgsi_visitor* glsl_to_tgsi;
 200
 201    /** map GP input back to VP output */
 202    GLuint input_map[PIPE_MAX_SHADER_INPUTS];
 203
 204    /** maps a Mesa VARYING_SLOT_x to a packed TGSI input index */
 205    GLuint input_to_index[VARYING_SLOT_MAX];
 206    /** maps a TGSI input index back to a Mesa VARYING_SLOT_x */
 207    GLuint index_to_input[PIPE_MAX_SHADER_INPUTS];
 208
 209    GLuint num_inputs;
 210
 211    GLuint input_to_slot[VARYING_SLOT_MAX];  /**< Maps VARYING_SLOT_x to slot */
 212    GLuint num_input_slots;
 213
 214    ubyte input_semantic_name[PIPE_MAX_SHADER_INPUTS];
 215    ubyte input_semantic_index[PIPE_MAX_SHADER_INPUTS];
 216
 217    struct pipe_shader_state tgsi;
 218
 219    struct st_gp_variant *variants;
 220 };
 221
 222
 223
 224 static INLINE struct st_fragment_program *
 225 st_fragment_program( struct gl_fragment_program *fp )
 226 {
 227    return (struct st_fragment_program *)fp;
 228 }
 229
 230
 231 static INLINE struct st_vertex_program *
 232 st_vertex_program( struct gl_vertex_program *vp )
 233 {
 234    return (struct st_vertex_program *)vp;
 235 }
 236
 237 static INLINE struct st_geometry_program *
 238 st_geometry_program( struct gl_geometry_program *gp )
 239 {
 240    return (struct st_geometry_program *)gp;
 241 }
 242
 243 static INLINE void
 244 st_reference_vertprog(struct st_context *st,
 245                       struct st_vertex_program **ptr,
 246                       struct st_vertex_program *prog)
 247 {
 248    _mesa_reference_program(st->ctx,
 249                            (struct gl_program **) ptr,
 250                            (struct gl_program *) prog);
 251 }
 252
 253 static INLINE void
 254 st_reference_geomprog(struct st_context *st,
 255                       struct st_geometry_program **ptr,
 256                       struct st_geometry_program *prog)
 257 {
 258    _mesa_reference_program(st->ctx,
 259                            (struct gl_program **) ptr,
 260                            (struct gl_program *) prog);
 261 }
 262
 263 static INLINE void
 264 st_reference_fragprog(struct st_context *st,
 265                       struct st_fragment_program **ptr,
 266                       struct st_fragment_program *prog)
 267 {
 268    _mesa_reference_program(st->ctx,
 269                            (struct gl_program **) ptr,
 270                            (struct gl_program *) prog);
 271 }
 272
 273
 274 extern struct st_vp_variant *
 275 st_get_vp_variant(struct st_context *st,
 276                   struct st_vertex_program *stvp,
 277                   const struct st_vp_variant_key *key);
 278
 279
 280 extern struct st_fp_variant *
 281 st_get_fp_variant(struct st_context *st,
 282                   struct st_fragment_program *stfp,
 283                   const struct st_fp_variant_key *key);
 284
 285
 286 extern struct st_gp_variant *
 287 st_get_gp_variant(struct st_context *st,
 288                   struct st_geometry_program *stgp,
 289                   const struct st_gp_variant_key *key);
 290
 291
 292 extern void
 293 st_prepare_vertex_program(struct gl_context *ctx,
 294                           struct st_vertex_program *stvp);
 295
 296 extern GLboolean
 297 st_prepare_fragment_program(struct gl_context *ctx,
 298                             struct st_fragment_program *stfp);
 299
 300
 301 extern void
 302 st_release_vp_variants( struct st_context *st,
 303                         struct st_vertex_program *stvp );
 304
 305 extern void
 306 st_release_fp_variants( struct st_context *st,
 307                         struct st_fragment_program *stfp );
 308
 309 extern void
 310 st_release_gp_variants(struct st_context *st,
 311                        struct st_geometry_program *stgp);
 312
 313
 314 extern void
 315 st_print_shaders(struct gl_context *ctx);
 316
 317 extern void
 318 st_destroy_program_variants(struct st_context *st);
 319
 320
 321 extern void
 322 st_print_current_vertex_program(void);
 323
 324
 325 #endif