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