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 "main/atifragshader.h"
  39 #include "program/program.h"
  40 #include "pipe/p_state.h"
  41 #include "tgsi/tgsi_from_mesa.h"
  42 #include "st_context.h"
  43 #include "st_texture.h"
  44 #include "st_glsl_to_tgsi.h"
  45
  46 #ifdef __cplusplus
  47 extern "C" {
  48 #endif
  49
  50 #define ST_DOUBLE_ATTRIB_PLACEHOLDER 0xff
  51
  52 struct st_external_sampler_key
  53 {
  54    GLuint lower_nv12;             /**< bitmask of 2 plane YUV samplers */
  55    GLuint lower_iyuv;             /**< bitmask of 3 plane YUV samplers */
  56    GLuint lower_xy_uxvx;          /**< bitmask of 2 plane YUV samplers */
  57    GLuint lower_yx_xuxv;          /**< bitmask of 2 plane YUV samplers */
  58    GLuint lower_ayuv;
  59    GLuint lower_xyuv;
  60 };
  61
  62 static inline struct st_external_sampler_key
  63 st_get_external_sampler_key(struct st_context *st, struct gl_program *prog)
  64 {
  65    unsigned mask = prog->ExternalSamplersUsed;
  66    struct st_external_sampler_key key;
  67
  68    memset(&key, 0, sizeof(key));
  69
  70    while (unlikely(mask)) {
  71       unsigned unit = u_bit_scan(&mask);
  72       struct st_texture_object *stObj =
  73             st_get_texture_object(st->ctx, prog, unit);
  74
  75       switch (st_get_view_format(stObj)) {
  76       case PIPE_FORMAT_NV12:
  77       case PIPE_FORMAT_P016:
  78          key.lower_nv12 |= (1 << unit);
  79          break;
  80       case PIPE_FORMAT_IYUV:
  81          key.lower_iyuv |= (1 << unit);
  82          break;
  83       case PIPE_FORMAT_YUYV:
  84          key.lower_yx_xuxv |= (1 << unit);
  85          break;
  86       case PIPE_FORMAT_UYVY:
  87          key.lower_xy_uxvx |= (1 << unit);
  88          break;
  89       case PIPE_FORMAT_AYUV:
  90          key.lower_ayuv |= (1 << unit);
  91          break;
  92       case PIPE_FORMAT_XYUV:
  93          key.lower_xyuv |= (1 << unit);
  94          break;
  95       default:
  96          printf("mesa: st_get_external_sampler_key: unhandled pipe format %u\n",
  97                st_get_view_format(stObj));
  98          break;
  99       }
 100    }
 101
 102    return key;
 103 }
 104
 105 /** Fragment program variant key */
 106 struct st_fp_variant_key
 107 {
 108    struct st_context *st;         /**< variants are per-context */
 109
 110    /** for glBitmap */
 111    GLuint bitmap:1;               /**< glBitmap variant? */
 112
 113    /** for glDrawPixels */
 114    GLuint drawpixels:1;           /**< glDrawPixels variant */
 115    GLuint scaleAndBias:1;         /**< glDrawPixels w/ scale and/or bias? */
 116    GLuint pixelMaps:1;            /**< glDrawPixels w/ pixel lookup map? */
 117
 118    /** for ARB_color_buffer_float */
 119    GLuint clamp_color:1;
 120
 121    /** for ARB_sample_shading */
 122    GLuint persample_shading:1;
 123
 124    /** needed for ATI_fragment_shader */
 125    GLuint fog:2;
 126
 127    /** for ARB_depth_clamp */
 128    GLuint lower_depth_clamp:1;
 129
 130    /** for OpenGL 1.0 on modern hardware */
 131    GLuint lower_two_sided_color:1;
 132
 133    GLuint lower_flatshade:1;
 134    enum compare_func lower_alpha_func:3;
 135
 136    /** needed for ATI_fragment_shader */
 137    char texture_targets[MAX_NUM_FRAGMENT_REGISTERS_ATI];
 138
 139    struct st_external_sampler_key external;
 140 };
 141
 142
 143 /**
 144  * Variant of a fragment program.
 145  */
 146 struct st_fp_variant
 147 {
 148    /** Parameters which generated this version of fragment program */
 149    struct st_fp_variant_key key;
 150
 151    /** Driver's compiled shader */
 152    void *driver_shader;
 153
 154    /** For glBitmap variants */
 155    uint bitmap_sampler;
 156
 157    /** For glDrawPixels variants */
 158    unsigned drawpix_sampler;
 159    unsigned pixelmap_sampler;
 160
 161    /** next in linked list */
 162    struct st_fp_variant *next;
 163 };
 164
 165
 166 /** Shader key shared by other shaders */
 167 struct st_common_variant_key
 168 {
 169    struct st_context *st;          /**< variants are per-context */
 170    bool passthrough_edgeflags;
 171
 172    /** for ARB_color_buffer_float */
 173    bool clamp_color;
 174
 175    /** both for ARB_depth_clamp */
 176    bool lower_depth_clamp;
 177    bool clip_negative_one_to_one;
 178
 179    /** lower glPointSize to gl_PointSize */
 180    boolean lower_point_size;
 181
 182    /* for user-defined clip-planes */
 183    uint8_t lower_ucp;
 184 };
 185
 186
 187 /**
 188  * This represents a vertex program, especially translated to match
 189  * the inputs of a particular fragment shader.
 190  */
 191 struct st_vp_variant
 192 {
 193    /* Parameters which generated this translated version of a vertex
 194     * shader:
 195     */
 196    struct st_common_variant_key key;
 197
 198    /**
 199     * The shader variant saved for the draw module to later emulate
 200     * selection/feedback/rasterpos.
 201     */
 202    const struct tgsi_token *tokens;
 203
 204    /** Driver's compiled shader */
 205    void *driver_shader;
 206
 207    /** For using our private draw module (glRasterPos) */
 208    struct draw_vertex_shader *draw_shader;
 209
 210    /** Next in linked list */
 211    struct st_vp_variant *next;
 212
 213    /** similar to that in st_vertex_program, but with edgeflags info too */
 214    GLuint num_inputs;
 215
 216    /** Bitfield of VERT_BIT_* bits of mesa vertex processing inputs */
 217    GLbitfield vert_attrib_mask;
 218 };
 219
 220
 221 /**
 222  * Derived from Mesa gl_program:
 223  */
 224 struct st_vertex_program
 225 {
 226    struct gl_program Base;  /**< The Mesa vertex program */
 227    struct pipe_shader_state state;
 228    struct glsl_to_tgsi_visitor* glsl_to_tgsi;
 229    uint64_t affected_states; /**< ST_NEW_* flags to mark dirty when binding */
 230
 231    /* used when bypassing glsl_to_tgsi: */
 232    struct gl_shader_program *shader_program;
 233
 234    /** maps a TGSI input index back to a Mesa VERT_ATTRIB_x */
 235    ubyte index_to_input[PIPE_MAX_ATTRIBS];
 236    ubyte num_inputs;
 237    /** Reverse mapping of the above */
 238    ubyte input_to_index[VERT_ATTRIB_MAX];
 239
 240    /** Maps VARYING_SLOT_x to slot */
 241    ubyte result_to_output[VARYING_SLOT_MAX];
 242
 243    /** List of translated variants of this vertex program.
 244     */
 245    struct st_vp_variant *variants;
 246 };
 247
 248
 249 /**
 250  * Geometry program variant.
 251  */
 252 struct st_common_variant
 253 {
 254    /* Parameters which generated this variant. */
 255    struct st_common_variant_key key;
 256
 257    void *driver_shader;
 258
 259    struct st_common_variant *next;
 260 };
 261
 262
 263 /**
 264  * Derived from Mesa gl_program:
 265  */
 266 struct st_common_program
 267 {
 268    struct gl_program Base;
 269    struct pipe_shader_state state;
 270    struct glsl_to_tgsi_visitor* glsl_to_tgsi;
 271    struct ati_fragment_shader *ati_fs;
 272    uint64_t affected_states; /**< ST_NEW_* flags to mark dirty when binding */
 273
 274   /* used when bypassing glsl_to_tgsi: */
 275    struct gl_shader_program *shader_program;
 276
 277    union {
 278       struct st_common_variant *variants;
 279       struct st_fp_variant *fp_variants;
 280    };
 281 };
 282
 283
 284 static inline struct st_vertex_program *
 285 st_vertex_program( struct gl_program *vp )
 286 {
 287    return (struct st_vertex_program *)vp;
 288 }
 289
 290 static inline struct st_common_program *
 291 st_common_program( struct gl_program *cp )
 292 {
 293    return (struct st_common_program *)cp;
 294 }
 295
 296 static inline void
 297 st_reference_vertprog(struct st_context *st,
 298                       struct st_vertex_program **ptr,
 299                       struct st_vertex_program *prog)
 300 {
 301    _mesa_reference_program(st->ctx,
 302                            (struct gl_program **) ptr,
 303                            (struct gl_program *) prog);
 304 }
 305
 306 static inline void
 307 st_reference_prog(struct st_context *st,
 308                   struct st_common_program **ptr,
 309                   struct st_common_program *prog)
 310 {
 311    _mesa_reference_program(st->ctx,
 312                            (struct gl_program **) ptr,
 313                            (struct gl_program *) prog);
 314 }
 315
 316 /**
 317  * This defines mapping from Mesa VARYING_SLOTs to TGSI GENERIC slots.
 318  */
 319 static inline unsigned
 320 st_get_generic_varying_index(struct st_context *st, GLuint attr)
 321 {
 322    return tgsi_get_generic_gl_varying_index((gl_varying_slot)attr,
 323                                             st->needs_texcoord_semantic);
 324 }
 325
 326 extern void
 327 st_set_prog_affected_state_flags(struct gl_program *prog);
 328
 329 extern struct st_vp_variant *
 330 st_get_vp_variant(struct st_context *st,
 331                   struct st_vertex_program *stvp,
 332                   const struct st_common_variant_key *key);
 333
 334
 335 extern struct st_fp_variant *
 336 st_get_fp_variant(struct st_context *st,
 337                   struct st_common_program *stfp,
 338                   const struct st_fp_variant_key *key);
 339
 340 extern struct st_common_variant *
 341 st_get_common_variant(struct st_context *st,
 342                       struct st_common_program *p,
 343                       const struct st_common_variant_key *key);
 344
 345 extern void
 346 st_release_vp_variants( struct st_context *st,
 347                         struct st_vertex_program *stvp );
 348
 349 extern void
 350 st_release_fp_variants( struct st_context *st,
 351                         struct st_common_program *stfp );
 352
 353 extern void
 354 st_release_common_variants(struct st_context *st, struct st_common_program *p);
 355
 356 extern void
 357 st_destroy_program_variants(struct st_context *st);
 358
 359 extern void
 360 st_finalize_nir_before_variants(struct nir_shader *nir);
 361
 362 extern void
 363 st_prepare_vertex_program(struct st_vertex_program *stvp);
 364
 365 extern void
 366 st_translate_stream_output_info(struct gl_program *prog);
 367
 368 extern bool
 369 st_translate_vertex_program(struct st_context *st,
 370                             struct st_vertex_program *stvp);
 371
 372 extern bool
 373 st_translate_fragment_program(struct st_context *st,
 374                               struct st_common_program *stfp);
 375
 376 extern bool
 377 st_translate_common_program(struct st_context *st,
 378                             struct st_common_program *stcp);
 379
 380 extern void
 381 st_precompile_shader_variant(struct st_context *st,
 382                              struct gl_program *prog);
 383
 384 #ifdef __cplusplus
 385 }
 386 #endif
 387
 388 #endif