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 #ifdef __cplusplus
  45 extern "C" {
  46 #endif
  47
  48 #define ST_DOUBLE_ATTRIB_PLACEHOLDER 0xffffffff
  49
  50 /** Fragment program variant key */
  51 struct st_fp_variant_key
  52 {
  53    struct st_context *st;         /**< variants are per-context */
  54
  55    /** for glBitmap */
  56    GLuint bitmap:1;               /**< glBitmap variant? */
  57
  58    /** for glDrawPixels */
  59    GLuint drawpixels:1;           /**< glDrawPixels variant */
  60    GLuint scaleAndBias:1;         /**< glDrawPixels w/ scale and/or bias? */
  61    GLuint pixelMaps:1;            /**< glDrawPixels w/ pixel lookup map? */
  62    GLuint drawpixels_z:1;         /**< glDrawPixels(GL_DEPTH) */
  63    GLuint drawpixels_stencil:1;   /**< glDrawPixels(GL_STENCIL) */
  64
  65    /** for ARB_color_buffer_float */
  66    GLuint clamp_color:1;
  67
  68    /** for ARB_sample_shading */
  69    GLuint persample_shading:1;
  70 };
  71
  72
  73 /**
  74  * Variant of a fragment program.
  75  */
  76 struct st_fp_variant
  77 {
  78    /** Parameters which generated this version of fragment program */
  79    struct st_fp_variant_key key;
  80
  81    struct pipe_shader_state tgsi;
  82
  83    /** Driver's compiled shader */
  84    void *driver_shader;
  85
  86    /** For glBitmap variants */
  87    struct gl_program_parameter_list *parameters;
  88    uint bitmap_sampler;
  89
  90    /** next in linked list */
  91    struct st_fp_variant *next;
  92 };
  93
  94
  95 /**
  96  * Derived from Mesa gl_fragment_program:
  97  */
  98 struct st_fragment_program
  99 {
 100    struct gl_fragment_program Base;
 101    struct glsl_to_tgsi_visitor* glsl_to_tgsi;
 102
 103    struct st_fp_variant *variants;
 104 };
 105
 106
 107
 108 /** Vertex program variant key */
 109 struct st_vp_variant_key
 110 {
 111    struct st_context *st;          /**< variants are per-context */
 112    boolean passthrough_edgeflags;
 113
 114    /** for ARB_color_buffer_float */
 115    boolean clamp_color;
 116 };
 117
 118
 119 /**
 120  * This represents a vertex program, especially translated to match
 121  * the inputs of a particular fragment shader.
 122  */
 123 struct st_vp_variant
 124 {
 125    /* Parameters which generated this translated version of a vertex
 126     * shader:
 127     */
 128    struct st_vp_variant_key key;
 129
 130    /**
 131     * TGSI tokens (to later generate a 'draw' module shader for
 132     * selection/feedback/rasterpos)
 133     */
 134    struct pipe_shader_state tgsi;
 135
 136    /** Driver's compiled shader */
 137    void *driver_shader;
 138
 139    /** For using our private draw module (glRasterPos) */
 140    struct draw_vertex_shader *draw_shader;
 141
 142    /** Next in linked list */
 143    struct st_vp_variant *next;
 144
 145    /** similar to that in st_vertex_program, but with edgeflags info too */
 146    GLuint num_inputs;
 147 };
 148
 149
 150 /**
 151  * Derived from Mesa gl_fragment_program:
 152  */
 153 struct st_vertex_program
 154 {
 155    struct gl_vertex_program Base;  /**< The Mesa vertex program */
 156    struct glsl_to_tgsi_visitor* glsl_to_tgsi;
 157
 158    /** maps a Mesa VERT_ATTRIB_x to a packed TGSI input index */
 159    GLuint input_to_index[VERT_ATTRIB_MAX];
 160    /** maps a TGSI input index back to a Mesa VERT_ATTRIB_x */
 161    GLuint index_to_input[PIPE_MAX_SHADER_INPUTS];
 162    GLuint num_inputs;
 163
 164    /** Maps VARYING_SLOT_x to slot */
 165    GLuint result_to_output[VARYING_SLOT_MAX];
 166    GLuint output_slot_to_attr[VARYING_SLOT_MAX];
 167    ubyte output_semantic_name[VARYING_SLOT_MAX];
 168    ubyte output_semantic_index[VARYING_SLOT_MAX];
 169    GLuint num_outputs;
 170
 171    /** List of translated variants of this vertex program.
 172     */
 173    struct st_vp_variant *variants;
 174 };
 175
 176
 177
 178 /** Geometry program variant key */
 179 struct st_gp_variant_key
 180 {
 181    struct st_context *st;          /**< variants are per-context */
 182    /* no other fields yet */
 183 };
 184
 185
 186 /**
 187  * Geometry program variant.
 188  */
 189 struct st_gp_variant
 190 {
 191    /* Parameters which generated this translated version of a vertex */
 192    struct st_gp_variant_key key;
 193
 194    void *driver_shader;
 195
 196    struct st_gp_variant *next;
 197 };
 198
 199
 200 /**
 201  * Derived from Mesa gl_geometry_program:
 202  */
 203 struct st_geometry_program
 204 {
 205    struct gl_geometry_program Base;  /**< The Mesa geometry program */
 206    struct glsl_to_tgsi_visitor* glsl_to_tgsi;
 207
 208    struct st_gp_variant *variants;
 209 };
 210
 211
 212
 213 static inline struct st_fragment_program *
 214 st_fragment_program( struct gl_fragment_program *fp )
 215 {
 216    return (struct st_fragment_program *)fp;
 217 }
 218
 219
 220 static inline struct st_vertex_program *
 221 st_vertex_program( struct gl_vertex_program *vp )
 222 {
 223    return (struct st_vertex_program *)vp;
 224 }
 225
 226 static inline struct st_geometry_program *
 227 st_geometry_program( struct gl_geometry_program *gp )
 228 {
 229    return (struct st_geometry_program *)gp;
 230 }
 231
 232 static inline void
 233 st_reference_vertprog(struct st_context *st,
 234                       struct st_vertex_program **ptr,
 235                       struct st_vertex_program *prog)
 236 {
 237    _mesa_reference_program(st->ctx,
 238                            (struct gl_program **) ptr,
 239                            (struct gl_program *) prog);
 240 }
 241
 242 static inline void
 243 st_reference_geomprog(struct st_context *st,
 244                       struct st_geometry_program **ptr,
 245                       struct st_geometry_program *prog)
 246 {
 247    _mesa_reference_program(st->ctx,
 248                            (struct gl_program **) ptr,
 249                            (struct gl_program *) prog);
 250 }
 251
 252 static inline void
 253 st_reference_fragprog(struct st_context *st,
 254                       struct st_fragment_program **ptr,
 255                       struct st_fragment_program *prog)
 256 {
 257    _mesa_reference_program(st->ctx,
 258                            (struct gl_program **) ptr,
 259                            (struct gl_program *) prog);
 260 }
 261
 262 /**
 263  * This defines mapping from Mesa VARYING_SLOTs to TGSI GENERIC slots.
 264  */
 265 static inline unsigned
 266 st_get_generic_varying_index(struct st_context *st, GLuint attr)
 267 {
 268    if (attr >= VARYING_SLOT_VAR0) {
 269       if (st->needs_texcoord_semantic)
 270          return attr - VARYING_SLOT_VAR0;
 271       else
 272          return 9 + (attr - VARYING_SLOT_VAR0);
 273    }
 274    if (attr == VARYING_SLOT_PNTC) {
 275       assert(!st->needs_texcoord_semantic);
 276       return 8;
 277    }
 278    if (attr >= VARYING_SLOT_TEX0 && attr <= VARYING_SLOT_TEX7) {
 279       assert(!st->needs_texcoord_semantic);
 280       return attr - VARYING_SLOT_TEX0;
 281    }
 282
 283    assert(0);
 284    return 0;
 285 }
 286
 287
 288 extern struct st_vp_variant *
 289 st_get_vp_variant(struct st_context *st,
 290                   struct st_vertex_program *stvp,
 291                   const struct st_vp_variant_key *key);
 292
 293
 294 extern struct st_fp_variant *
 295 st_get_fp_variant(struct st_context *st,
 296                   struct st_fragment_program *stfp,
 297                   const struct st_fp_variant_key *key);
 298
 299
 300 extern struct st_gp_variant *
 301 st_get_gp_variant(struct st_context *st,
 302                   struct st_geometry_program *stgp,
 303                   const struct st_gp_variant_key *key);
 304
 305
 306 extern void
 307 st_prepare_vertex_program(struct gl_context *ctx,
 308                           struct st_vertex_program *stvp);
 309
 310 extern GLboolean
 311 st_prepare_fragment_program(struct gl_context *ctx,
 312                             struct st_fragment_program *stfp);
 313
 314
 315 extern void
 316 st_release_vp_variants( struct st_context *st,
 317                         struct st_vertex_program *stvp );
 318
 319 extern void
 320 st_release_fp_variants( struct st_context *st,
 321                         struct st_fragment_program *stfp );
 322
 323 extern void
 324 st_release_gp_variants(struct st_context *st,
 325                        struct st_geometry_program *stgp);
 326
 327 extern void
 328 st_destroy_program_variants(struct st_context *st);
 329
 330
 331 extern void
 332 st_print_current_vertex_program(void);
 333
 334 extern void
 335 st_precompile_shader_variant(struct st_context *st,
 336                              struct gl_program *prog);
 337
 338 #ifdef __cplusplus
 339 }
 340 #endif
 341
 342 #endif