src/mesa/drivers/dri/intel/intel_context.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 #ifndef INTELCONTEXT_INC
  29 #define INTELCONTEXT_INC
  30
  31
  32 #include <stdbool.h>
  33 #include "main/mtypes.h"
  34 #include "main/mm.h"
  35
  36 #ifdef __cplusplus
  37 extern "C" {
  38         /* Evil hack for using libdrm in a c++ compiler. */
  39         #define virtual virt
  40 #endif
  41
  42 #include "drm.h"
  43 #include "intel_bufmgr.h"
  44
  45 #include "intel_screen.h"
  46 #include "intel_tex_obj.h"
  47 #include "i915_drm.h"
  48
  49 #ifdef __cplusplus
  50         #undef virtual
  51 }
  52 #endif
  53
  54 #include "tnl/t_vertex.h"
  55
  56 #define TAG(x) intel##x
  57 #include "tnl_dd/t_dd_vertex.h"
  58 #undef TAG
  59
  60 #define DV_PF_555  (1<<8)
  61 #define DV_PF_565  (2<<8)
  62 #define DV_PF_8888 (3<<8)
  63 #define DV_PF_4444 (8<<8)
  64 #define DV_PF_1555 (9<<8)
  65
  66 struct intel_region;
  67 struct intel_context;
  68
  69 typedef void (*intel_tri_func) (struct intel_context *, intelVertex *,
  70                                 intelVertex *, intelVertex *);
  71 typedef void (*intel_line_func) (struct intel_context *, intelVertex *,
  72                                  intelVertex *);
  73 typedef void (*intel_point_func) (struct intel_context *, intelVertex *);
  74
  75 /**
  76  * Bits for intel->Fallback field
  77  */
  78 /*@{*/
  79 #define INTEL_FALLBACK_DRAW_BUFFER       0x1
  80 #define INTEL_FALLBACK_READ_BUFFER       0x2
  81 #define INTEL_FALLBACK_DEPTH_BUFFER      0x4
  82 #define INTEL_FALLBACK_STENCIL_BUFFER    0x8
  83 #define INTEL_FALLBACK_USER              0x10
  84 #define INTEL_FALLBACK_RENDERMODE        0x20
  85 #define INTEL_FALLBACK_TEXTURE           0x40
  86 #define INTEL_FALLBACK_DRIVER            0x1000  /**< first for drivers */
  87 /*@}*/
  88
  89 extern void intelFallback(struct intel_context *intel, GLbitfield bit,
  90                           GLboolean mode);
  91 #define FALLBACK( intel, bit, mode ) intelFallback( intel, bit, mode )
  92
  93
  94 #define INTEL_WRITE_PART  0x1
  95 #define INTEL_WRITE_FULL  0x2
  96 #define INTEL_READ        0x4
  97
  98 #define INTEL_MAX_FIXUP 64
  99
 100 #ifndef likely
 101 #ifdef __GNUC__
 102 #define likely(expr) (__builtin_expect(expr, 1))
 103 #define unlikely(expr) (__builtin_expect(expr, 0))
 104 #else
 105 #define likely(expr) (expr)
 106 #define unlikely(expr) (expr)
 107 #endif
 108 #endif
 109
 110 struct intel_sync_object {
 111    struct gl_sync_object Base;
 112
 113    /** Batch associated with this sync object */
 114    drm_intel_bo *bo;
 115 };
 116
 117 /**
 118  * intel_context is derived from Mesa's context class: struct gl_context.
 119  */
 120 struct intel_context
 121 {
 122    struct gl_context ctx;  /**< base class, must be first field */
 123
 124    struct
 125    {
 126       void (*destroy) (struct intel_context * intel);
 127       void (*emit_state) (struct intel_context * intel);
 128       void (*finish_batch) (struct intel_context * intel);
 129       void (*new_batch) (struct intel_context * intel);
 130       void (*emit_invarient_state) (struct intel_context * intel);
 131       void (*update_texture_state) (struct intel_context * intel);
 132
 133       void (*render_start) (struct intel_context * intel);
 134       void (*render_prevalidate) (struct intel_context * intel);
 135       void (*set_draw_region) (struct intel_context * intel,
 136                                struct intel_region * draw_regions[],
 137                                struct intel_region * depth_region,
 138                                GLuint num_regions);
 139
 140       void (*reduced_primitive_state) (struct intel_context * intel,
 141                                        GLenum rprim);
 142
 143       GLboolean (*check_vertex_size) (struct intel_context * intel,
 144                                       GLuint expected);
 145       void (*invalidate_state) (struct intel_context *intel,
 146                                 GLuint new_state);
 147
 148       void (*assert_not_dirty) (struct intel_context *intel);
 149
 150       void (*debug_batch)(struct intel_context *intel);
 151       bool (*render_target_supported)(gl_format format);
 152    } vtbl;
 153
 154    GLbitfield Fallback;  /**< mask of INTEL_FALLBACK_x bits */
 155    GLuint NewGLState;
 156
 157    dri_bufmgr *bufmgr;
 158    unsigned int maxBatchSize;
 159
 160    /**
 161     * Generation number of the hardware: 2 is 8xx, 3 is 9xx pre-965, 4 is 965.
 162     */
 163    int gen;
 164    GLboolean needs_ff_sync;
 165    GLboolean is_g4x;
 166    GLboolean is_945;
 167    GLboolean has_luminance_srgb;
 168    GLboolean has_xrgb_textures;
 169
 170    int urb_size;
 171
 172    struct intel_batchbuffer {
 173       drm_intel_bo *bo;
 174       struct cached_batch_item *cached_items;
 175
 176       uint16_t emit, total;
 177       uint16_t used, reserved_space;
 178       uint32_t map[8192];
 179 #define BATCH_SZ (8192*sizeof(uint32_t))
 180
 181       uint32_t state_batch_offset;
 182       bool is_blit;
 183    } batch;
 184
 185    GLboolean need_throttle;
 186    GLboolean no_batch_wrap;
 187
 188    struct
 189    {
 190       GLuint id;
 191       uint32_t start_ptr; /**< for i8xx */
 192       uint32_t primitive;       /**< Current hardware primitive type */
 193       void (*flush) (struct intel_context *);
 194       drm_intel_bo *vb_bo;
 195       uint8_t *vb;
 196       unsigned int start_offset; /**< Byte offset of primitive sequence */
 197       unsigned int current_offset; /**< Byte offset of next vertex */
 198       unsigned int count;       /**< Number of vertices in current primitive */
 199    } prim;
 200
 201    struct {
 202       drm_intel_bo *bo;
 203       GLuint offset;
 204       uint32_t buffer_len;
 205       uint32_t buffer_offset;
 206       char buffer[4096];
 207    } upload;
 208
 209    GLuint stats_wm;
 210
 211    /* Offsets of fields within the current vertex:
 212     */
 213    GLuint coloroffset;
 214    GLuint specoffset;
 215    GLuint wpos_offset;
 216    GLuint wpos_size;
 217
 218    struct tnl_attr_map vertex_attrs[VERT_ATTRIB_MAX];
 219    GLuint vertex_attr_count;
 220
 221    GLfloat polygon_offset_scale;        /* dependent on depth_scale, bpp */
 222
 223    GLboolean hw_stencil;
 224    GLboolean hw_stipple;
 225    GLboolean depth_buffer_is_float;
 226    GLboolean no_rast;
 227    GLboolean always_flush_batch;
 228    GLboolean always_flush_cache;
 229
 230    /* 0 - nonconformant, best performance;
 231     * 1 - fallback to sw for known conformance bugs
 232     * 2 - always fallback to sw
 233     */
 234    GLuint conformance_mode;
 235
 236    /* State for intelvb.c and inteltris.c.
 237     */
 238    GLuint RenderIndex;
 239    GLmatrix ViewportMatrix;
 240    GLenum render_primitive;
 241    GLenum reduced_primitive;
 242    GLuint vertex_size;
 243    GLubyte *verts;              /* points to tnl->clipspace.vertex_buf */
 244
 245    /* Fallback rasterization functions
 246     */
 247    intel_point_func draw_point;
 248    intel_line_func draw_line;
 249    intel_tri_func draw_tri;
 250
 251    /**
 252     * Set if rendering has occured to the drawable's front buffer.
 253     *
 254     * This is used in the DRI2 case to detect that glFlush should also copy
 255     * the contents of the fake front buffer to the real front buffer.
 256     */
 257    GLboolean front_buffer_dirty;
 258
 259    /**
 260     * Track whether front-buffer rendering is currently enabled
 261     *
 262     * A separate flag is used to track this in order to support MRT more
 263     * easily.
 264     */
 265    GLboolean is_front_buffer_rendering;
 266    /**
 267     * Track whether front-buffer is the current read target.
 268     *
 269     * This is closely associated with is_front_buffer_rendering, but may
 270     * be set separately.  The DRI2 fake front buffer must be referenced
 271     * either way.
 272     */
 273    GLboolean is_front_buffer_reading;
 274
 275    GLboolean use_texture_tiling;
 276    GLboolean use_early_z;
 277
 278    int driFd;
 279
 280    __DRIcontext *driContext;
 281    struct intel_screen *intelScreen;
 282    void (*saved_viewport)(struct gl_context * ctx,
 283                           GLint x, GLint y, GLsizei width, GLsizei height);
 284
 285    /**
 286     * Configuration cache
 287     */
 288    driOptionCache optionCache;
 289 };
 290
 291 extern char *__progname;
 292
 293
 294 #define SUBPIXEL_X 0.125
 295 #define SUBPIXEL_Y 0.125
 296
 297 #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
 298
 299 /**
 300  * Align a value up to an alignment value
 301  *
 302  * If \c value is not already aligned to the requested alignment value, it
 303  * will be rounded up.
 304  *
 305  * \param value  Value to be rounded
 306  * \param alignment  Alignment value to be used.  This must be a power of two.
 307  *
 308  * \sa ROUND_DOWN_TO()
 309  */
 310 #define ALIGN(value, alignment)  (((value) + alignment - 1) & ~(alignment - 1))
 311
 312 /**
 313  * Align a value down to an alignment value
 314  *
 315  * If \c value is not already aligned to the requested alignment value, it
 316  * will be rounded down.
 317  *
 318  * \param value  Value to be rounded
 319  * \param alignment  Alignment value to be used.  This must be a power of two.
 320  *
 321  * \sa ALIGN()
 322  */
 323 #define ROUND_DOWN_TO(value, alignment) ((value) & ~(alignment - 1))
 324
 325 #define IS_POWER_OF_TWO(val) (((val) & (val - 1)) == 0)
 326
 327 static INLINE uint32_t
 328 U_FIXED(float value, uint32_t frac_bits)
 329 {
 330    value *= (1 << frac_bits);
 331    return value < 0 ? 0 : value;
 332 }
 333
 334 static INLINE uint32_t
 335 S_FIXED(float value, uint32_t frac_bits)
 336 {
 337    return value * (1 << frac_bits);
 338 }
 339
 340 #define INTEL_FIREVERTICES(intel)               \
 341 do {                                            \
 342    if ((intel)->prim.flush)                     \
 343       (intel)->prim.flush(intel);               \
 344 } while (0)
 345
 346 /* ================================================================
 347  * From linux kernel i386 header files, copes with odd sizes better
 348  * than COPY_DWORDS would:
 349  * XXX Put this in src/mesa/main/imports.h ???
 350  */
 351 #if defined(i386) || defined(__i386__)
 352 static INLINE void * __memcpy(void * to, const void * from, size_t n)
 353 {
 354    int d0, d1, d2;
 355    __asm__ __volatile__(
 356       "rep ; movsl\n\t"
 357       "testb $2,%b4\n\t"
 358       "je 1f\n\t"
 359       "movsw\n"
 360       "1:\ttestb $1,%b4\n\t"
 361       "je 2f\n\t"
 362       "movsb\n"
 363       "2:"
 364       : "=&c" (d0), "=&D" (d1), "=&S" (d2)
 365       :"0" (n/4), "q" (n),"1" ((long) to),"2" ((long) from)
 366       : "memory");
 367    return (to);
 368 }
 369 #else
 370 #define __memcpy(a,b,c) memcpy(a,b,c)
 371 #endif
 372
 373
 374 /* ================================================================
 375  * Debugging:
 376  */
 377 extern int INTEL_DEBUG;
 378
 379 #define DEBUG_TEXTURE   0x1
 380 #define DEBUG_STATE     0x2
 381 #define DEBUG_IOCTL     0x4
 382 #define DEBUG_BLIT      0x8
 383 #define DEBUG_MIPTREE   0x10
 384 #define DEBUG_FALLBACKS 0x20
 385 #define DEBUG_VERBOSE   0x40
 386 #define DEBUG_BATCH     0x80
 387 #define DEBUG_PIXEL     0x100
 388 #define DEBUG_BUFMGR    0x200
 389 #define DEBUG_REGION    0x400
 390 #define DEBUG_FBO       0x800
 391 #define DEBUG_GS        0x1000
 392 #define DEBUG_SYNC      0x2000
 393 #define DEBUG_PRIMS     0x4000
 394 #define DEBUG_VERTS     0x8000
 395 #define DEBUG_DRI       0x10000
 396 #define DEBUG_SF        0x20000
 397 #define DEBUG_SANITY    0x40000
 398 #define DEBUG_SLEEP     0x80000
 399 #define DEBUG_STATS     0x100000
 400 #define DEBUG_TILE      0x200000
 401 #define DEBUG_SINGLE_THREAD   0x400000
 402 #define DEBUG_WM        0x800000
 403 #define DEBUG_URB       0x1000000
 404 #define DEBUG_VS        0x2000000
 405 #define DEBUG_CLIP      0x8000000
 406
 407 #define DBG(...) do {                                           \
 408         if (unlikely(INTEL_DEBUG & FILE_DEBUG_FLAG))            \
 409                 printf(__VA_ARGS__);                    \
 410 } while(0)
 411
 412 #define fallback_debug(...) do {                                \
 413         if (unlikely(INTEL_DEBUG & DEBUG_FALLBACKS))            \
 414                 printf(__VA_ARGS__);                            \
 415 } while(0)
 416
 417 #define PCI_CHIP_845_G                  0x2562
 418 #define PCI_CHIP_I830_M                 0x3577
 419 #define PCI_CHIP_I855_GM                0x3582
 420 #define PCI_CHIP_I865_G                 0x2572
 421 #define PCI_CHIP_I915_G                 0x2582
 422 #define PCI_CHIP_I915_GM                0x2592
 423 #define PCI_CHIP_I945_G                 0x2772
 424 #define PCI_CHIP_I945_GM                0x27A2
 425 #define PCI_CHIP_I945_GME               0x27AE
 426 #define PCI_CHIP_G33_G                  0x29C2
 427 #define PCI_CHIP_Q35_G                  0x29B2
 428 #define PCI_CHIP_Q33_G                  0x29D2
 429
 430
 431 /* ================================================================
 432  * intel_context.c:
 433  */
 434
 435 extern GLboolean intelInitContext(struct intel_context *intel,
 436                                   int api,
 437                                   const struct gl_config * mesaVis,
 438                                   __DRIcontext * driContextPriv,
 439                                   void *sharedContextPrivate,
 440                                   struct dd_function_table *functions);
 441
 442 extern void intelFinish(struct gl_context * ctx);
 443 extern void intel_flush(struct gl_context * ctx);
 444
 445 extern void intelInitDriverFunctions(struct dd_function_table *functions);
 446
 447 void intel_init_syncobj_functions(struct dd_function_table *functions);
 448
 449
 450 /* ================================================================
 451  * intel_state.c:
 452  */
 453 extern void intelInitStateFuncs(struct dd_function_table *functions);
 454
 455 #define COMPAREFUNC_ALWAYS              0
 456 #define COMPAREFUNC_NEVER               0x1
 457 #define COMPAREFUNC_LESS                0x2
 458 #define COMPAREFUNC_EQUAL               0x3
 459 #define COMPAREFUNC_LEQUAL              0x4
 460 #define COMPAREFUNC_GREATER             0x5
 461 #define COMPAREFUNC_NOTEQUAL            0x6
 462 #define COMPAREFUNC_GEQUAL              0x7
 463
 464 #define STENCILOP_KEEP                  0
 465 #define STENCILOP_ZERO                  0x1
 466 #define STENCILOP_REPLACE               0x2
 467 #define STENCILOP_INCRSAT               0x3
 468 #define STENCILOP_DECRSAT               0x4
 469 #define STENCILOP_INCR                  0x5
 470 #define STENCILOP_DECR                  0x6
 471 #define STENCILOP_INVERT                0x7
 472
 473 #define LOGICOP_CLEAR                   0
 474 #define LOGICOP_NOR                     0x1
 475 #define LOGICOP_AND_INV                 0x2
 476 #define LOGICOP_COPY_INV                0x3
 477 #define LOGICOP_AND_RVRSE               0x4
 478 #define LOGICOP_INV                     0x5
 479 #define LOGICOP_XOR                     0x6
 480 #define LOGICOP_NAND                    0x7
 481 #define LOGICOP_AND                     0x8
 482 #define LOGICOP_EQUIV                   0x9
 483 #define LOGICOP_NOOP                    0xa
 484 #define LOGICOP_OR_INV                  0xb
 485 #define LOGICOP_COPY                    0xc
 486 #define LOGICOP_OR_RVRSE                0xd
 487 #define LOGICOP_OR                      0xe
 488 #define LOGICOP_SET                     0xf
 489
 490 #define BLENDFACT_ZERO                  0x01
 491 #define BLENDFACT_ONE                   0x02
 492 #define BLENDFACT_SRC_COLR              0x03
 493 #define BLENDFACT_INV_SRC_COLR          0x04
 494 #define BLENDFACT_SRC_ALPHA             0x05
 495 #define BLENDFACT_INV_SRC_ALPHA         0x06
 496 #define BLENDFACT_DST_ALPHA             0x07
 497 #define BLENDFACT_INV_DST_ALPHA         0x08
 498 #define BLENDFACT_DST_COLR              0x09
 499 #define BLENDFACT_INV_DST_COLR          0x0a
 500 #define BLENDFACT_SRC_ALPHA_SATURATE    0x0b
 501 #define BLENDFACT_CONST_COLOR           0x0c
 502 #define BLENDFACT_INV_CONST_COLOR       0x0d
 503 #define BLENDFACT_CONST_ALPHA           0x0e
 504 #define BLENDFACT_INV_CONST_ALPHA       0x0f
 505 #define BLENDFACT_MASK                  0x0f
 506
 507 enum {
 508    DRI_CONF_BO_REUSE_DISABLED,
 509    DRI_CONF_BO_REUSE_ALL
 510 };
 511
 512 extern int intel_translate_shadow_compare_func(GLenum func);
 513 extern int intel_translate_compare_func(GLenum func);
 514 extern int intel_translate_stencil_op(GLenum op);
 515 extern int intel_translate_blend_factor(GLenum factor);
 516 extern int intel_translate_logic_op(GLenum opcode);
 517
 518 void intel_update_renderbuffers(__DRIcontext *context,
 519                                 __DRIdrawable *drawable);
 520 void intel_prepare_render(struct intel_context *intel);
 521
 522 void i915_set_buf_info_for_region(uint32_t *state, struct intel_region *region,
 523                                   uint32_t buffer_id);
 524
 525 /*======================================================================
 526  * Inline conversion functions.
 527  * These are better-typed than the macros used previously:
 528  */
 529 static INLINE struct intel_context *
 530 intel_context(struct gl_context * ctx)
 531 {
 532    return (struct intel_context *) ctx;
 533 }
 534
 535 static INLINE GLboolean
 536 is_power_of_two(uint32_t value)
 537 {
 538    return (value & (value - 1)) == 0;
 539 }
 540
 541 #endif