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       void (*update_draw_buffer)(struct intel_context *intel);
 140
 141       void (*reduced_primitive_state) (struct intel_context * intel,
 142                                        GLenum rprim);
 143
 144       GLboolean (*check_vertex_size) (struct intel_context * intel,
 145                                       GLuint expected);
 146       void (*invalidate_state) (struct intel_context *intel,
 147                                 GLuint new_state);
 148
 149       void (*assert_not_dirty) (struct intel_context *intel);
 150
 151       void (*debug_batch)(struct intel_context *intel);
 152       bool (*render_target_supported)(gl_format format);
 153
 154       /** Can HiZ be enabled on a depthbuffer of the given format? */
 155       bool (*is_hiz_depth_format)(struct intel_context *intel,
 156                                   gl_format format);
 157    } vtbl;
 158
 159    GLbitfield Fallback;  /**< mask of INTEL_FALLBACK_x bits */
 160    GLuint NewGLState;
 161
 162    dri_bufmgr *bufmgr;
 163    unsigned int maxBatchSize;
 164
 165    /**
 166     * Generation number of the hardware: 2 is 8xx, 3 is 9xx pre-965, 4 is 965.
 167     */
 168    int gen;
 169    GLboolean needs_ff_sync;
 170    GLboolean is_g4x;
 171    GLboolean is_945;
 172    GLboolean has_separate_stencil;
 173    GLboolean must_use_separate_stencil;
 174    GLboolean has_hiz;
 175
 176    int urb_size;
 177
 178    struct intel_batchbuffer {
 179       /** Current batchbuffer being queued up. */
 180       drm_intel_bo *bo;
 181       /** Last BO submitted to the hardware.  Used for glFinish(). */
 182       drm_intel_bo *last_bo;
 183       /** BO for post-sync nonzero writes for gen6 workaround. */
 184       drm_intel_bo *workaround_bo;
 185       bool need_workaround_flush;
 186
 187       struct cached_batch_item *cached_items;
 188
 189       uint16_t emit, total;
 190       uint16_t used, reserved_space;
 191       uint32_t map[8192];
 192 #define BATCH_SZ (8192*sizeof(uint32_t))
 193
 194       uint32_t state_batch_offset;
 195       bool is_blit;
 196    } batch;
 197
 198    drm_intel_bo *first_post_swapbuffers_batch;
 199    GLboolean need_throttle;
 200    GLboolean no_batch_wrap;
 201    bool tnl_pipeline_running; /**< Set while i915's _tnl_run_pipeline. */
 202
 203    struct
 204    {
 205       GLuint id;
 206       uint32_t start_ptr; /**< for i8xx */
 207       uint32_t primitive;       /**< Current hardware primitive type */
 208       void (*flush) (struct intel_context *);
 209       drm_intel_bo *vb_bo;
 210       uint8_t *vb;
 211       unsigned int start_offset; /**< Byte offset of primitive sequence */
 212       unsigned int current_offset; /**< Byte offset of next vertex */
 213       unsigned int count;       /**< Number of vertices in current primitive */
 214    } prim;
 215
 216    struct {
 217       drm_intel_bo *bo;
 218       GLuint offset;
 219       uint32_t buffer_len;
 220       uint32_t buffer_offset;
 221       char buffer[4096];
 222    } upload;
 223
 224    GLuint stats_wm;
 225
 226    /* Offsets of fields within the current vertex:
 227     */
 228    GLuint coloroffset;
 229    GLuint specoffset;
 230    GLuint wpos_offset;
 231
 232    struct tnl_attr_map vertex_attrs[VERT_ATTRIB_MAX];
 233    GLuint vertex_attr_count;
 234
 235    GLfloat polygon_offset_scale;        /* dependent on depth_scale, bpp */
 236
 237    GLboolean hw_stencil;
 238    GLboolean hw_stipple;
 239    GLboolean depth_buffer_is_float;
 240    GLboolean no_rast;
 241    GLboolean always_flush_batch;
 242    GLboolean always_flush_cache;
 243
 244    /* 0 - nonconformant, best performance;
 245     * 1 - fallback to sw for known conformance bugs
 246     * 2 - always fallback to sw
 247     */
 248    GLuint conformance_mode;
 249
 250    /* State for intelvb.c and inteltris.c.
 251     */
 252    GLuint RenderIndex;
 253    GLmatrix ViewportMatrix;
 254    GLenum render_primitive;
 255    GLenum reduced_primitive;
 256    GLuint vertex_size;
 257    GLubyte *verts;              /* points to tnl->clipspace.vertex_buf */
 258
 259    /* Fallback rasterization functions
 260     */
 261    intel_point_func draw_point;
 262    intel_line_func draw_line;
 263    intel_tri_func draw_tri;
 264
 265    /**
 266     * Set if rendering has occured to the drawable's front buffer.
 267     *
 268     * This is used in the DRI2 case to detect that glFlush should also copy
 269     * the contents of the fake front buffer to the real front buffer.
 270     */
 271    GLboolean front_buffer_dirty;
 272
 273    /**
 274     * Track whether front-buffer rendering is currently enabled
 275     *
 276     * A separate flag is used to track this in order to support MRT more
 277     * easily.
 278     */
 279    GLboolean is_front_buffer_rendering;
 280    /**
 281     * Track whether front-buffer is the current read target.
 282     *
 283     * This is closely associated with is_front_buffer_rendering, but may
 284     * be set separately.  The DRI2 fake front buffer must be referenced
 285     * either way.
 286     */
 287    GLboolean is_front_buffer_reading;
 288
 289    GLboolean use_texture_tiling;
 290    GLboolean use_early_z;
 291
 292    int driFd;
 293
 294    __DRIcontext *driContext;
 295    struct intel_screen *intelScreen;
 296    void (*saved_viewport)(struct gl_context * ctx,
 297                           GLint x, GLint y, GLsizei width, GLsizei height);
 298
 299    /**
 300     * Configuration cache
 301     */
 302    driOptionCache optionCache;
 303 };
 304
 305 extern char *__progname;
 306
 307
 308 #define SUBPIXEL_X 0.125
 309 #define SUBPIXEL_Y 0.125
 310
 311 #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
 312
 313 /**
 314  * Align a value up to an alignment value
 315  *
 316  * If \c value is not already aligned to the requested alignment value, it
 317  * will be rounded up.
 318  *
 319  * \param value  Value to be rounded
 320  * \param alignment  Alignment value to be used.  This must be a power of two.
 321  *
 322  * \sa ROUND_DOWN_TO()
 323  */
 324 #define ALIGN(value, alignment)  (((value) + alignment - 1) & ~(alignment - 1))
 325
 326 /**
 327  * Align a value down to an alignment value
 328  *
 329  * If \c value is not already aligned to the requested alignment value, it
 330  * will be rounded down.
 331  *
 332  * \param value  Value to be rounded
 333  * \param alignment  Alignment value to be used.  This must be a power of two.
 334  *
 335  * \sa ALIGN()
 336  */
 337 #define ROUND_DOWN_TO(value, alignment) ((value) & ~(alignment - 1))
 338
 339 #define IS_POWER_OF_TWO(val) (((val) & (val - 1)) == 0)
 340
 341 static INLINE uint32_t
 342 U_FIXED(float value, uint32_t frac_bits)
 343 {
 344    value *= (1 << frac_bits);
 345    return value < 0 ? 0 : value;
 346 }
 347
 348 static INLINE uint32_t
 349 S_FIXED(float value, uint32_t frac_bits)
 350 {
 351    return value * (1 << frac_bits);
 352 }
 353
 354 #define INTEL_FIREVERTICES(intel)               \
 355 do {                                            \
 356    if ((intel)->prim.flush)                     \
 357       (intel)->prim.flush(intel);               \
 358 } while (0)
 359
 360 /* ================================================================
 361  * From linux kernel i386 header files, copes with odd sizes better
 362  * than COPY_DWORDS would:
 363  * XXX Put this in src/mesa/main/imports.h ???
 364  */
 365 #if defined(i386) || defined(__i386__)
 366 static INLINE void * __memcpy(void * to, const void * from, size_t n)
 367 {
 368    int d0, d1, d2;
 369    __asm__ __volatile__(
 370       "rep ; movsl\n\t"
 371       "testb $2,%b4\n\t"
 372       "je 1f\n\t"
 373       "movsw\n"
 374       "1:\ttestb $1,%b4\n\t"
 375       "je 2f\n\t"
 376       "movsb\n"
 377       "2:"
 378       : "=&c" (d0), "=&D" (d1), "=&S" (d2)
 379       :"0" (n/4), "q" (n),"1" ((long) to),"2" ((long) from)
 380       : "memory");
 381    return (to);
 382 }
 383 #else
 384 #define __memcpy(a,b,c) memcpy(a,b,c)
 385 #endif
 386
 387
 388 /* ================================================================
 389  * Debugging:
 390  */
 391 extern int INTEL_DEBUG;
 392
 393 #define DEBUG_TEXTURE   0x1
 394 #define DEBUG_STATE     0x2
 395 #define DEBUG_IOCTL     0x4
 396 #define DEBUG_BLIT      0x8
 397 #define DEBUG_MIPTREE   0x10
 398 #define DEBUG_FALLBACKS 0x20
 399 #define DEBUG_VERBOSE   0x40
 400 #define DEBUG_BATCH     0x80
 401 #define DEBUG_PIXEL     0x100
 402 #define DEBUG_BUFMGR    0x200
 403 #define DEBUG_REGION    0x400
 404 #define DEBUG_FBO       0x800
 405 #define DEBUG_GS        0x1000
 406 #define DEBUG_SYNC      0x2000
 407 #define DEBUG_PRIMS     0x4000
 408 #define DEBUG_VERTS     0x8000
 409 #define DEBUG_DRI       0x10000
 410 #define DEBUG_SF        0x20000
 411 #define DEBUG_SANITY    0x40000
 412 #define DEBUG_SLEEP     0x80000
 413 #define DEBUG_STATS     0x100000
 414 #define DEBUG_TILE      0x200000
 415 #define DEBUG_SINGLE_THREAD   0x400000
 416 #define DEBUG_WM        0x800000
 417 #define DEBUG_URB       0x1000000
 418 #define DEBUG_VS        0x2000000
 419 #define DEBUG_CLIP      0x8000000
 420
 421 #define DBG(...) do {                                           \
 422         if (unlikely(INTEL_DEBUG & FILE_DEBUG_FLAG))            \
 423                 printf(__VA_ARGS__);                    \
 424 } while(0)
 425
 426 #define fallback_debug(...) do {                                \
 427         if (unlikely(INTEL_DEBUG & DEBUG_FALLBACKS))            \
 428                 printf(__VA_ARGS__);                            \
 429 } while(0)
 430
 431 #define PCI_CHIP_845_G                  0x2562
 432 #define PCI_CHIP_I830_M                 0x3577
 433 #define PCI_CHIP_I855_GM                0x3582
 434 #define PCI_CHIP_I865_G                 0x2572
 435 #define PCI_CHIP_I915_G                 0x2582
 436 #define PCI_CHIP_I915_GM                0x2592
 437 #define PCI_CHIP_I945_G                 0x2772
 438 #define PCI_CHIP_I945_GM                0x27A2
 439 #define PCI_CHIP_I945_GME               0x27AE
 440 #define PCI_CHIP_G33_G                  0x29C2
 441 #define PCI_CHIP_Q35_G                  0x29B2
 442 #define PCI_CHIP_Q33_G                  0x29D2
 443
 444
 445 /* ================================================================
 446  * intel_context.c:
 447  */
 448
 449 extern GLboolean intelInitContext(struct intel_context *intel,
 450                                   int api,
 451                                   const struct gl_config * mesaVis,
 452                                   __DRIcontext * driContextPriv,
 453                                   void *sharedContextPrivate,
 454                                   struct dd_function_table *functions);
 455
 456 extern void intelFinish(struct gl_context * ctx);
 457 extern void intel_flush(struct gl_context * ctx);
 458
 459 extern void intelInitDriverFunctions(struct dd_function_table *functions);
 460
 461 void intel_init_syncobj_functions(struct dd_function_table *functions);
 462
 463
 464 /* ================================================================
 465  * intel_state.c:
 466  */
 467 extern void intelInitStateFuncs(struct dd_function_table *functions);
 468
 469 #define COMPAREFUNC_ALWAYS              0
 470 #define COMPAREFUNC_NEVER               0x1
 471 #define COMPAREFUNC_LESS                0x2
 472 #define COMPAREFUNC_EQUAL               0x3
 473 #define COMPAREFUNC_LEQUAL              0x4
 474 #define COMPAREFUNC_GREATER             0x5
 475 #define COMPAREFUNC_NOTEQUAL            0x6
 476 #define COMPAREFUNC_GEQUAL              0x7
 477
 478 #define STENCILOP_KEEP                  0
 479 #define STENCILOP_ZERO                  0x1
 480 #define STENCILOP_REPLACE               0x2
 481 #define STENCILOP_INCRSAT               0x3
 482 #define STENCILOP_DECRSAT               0x4
 483 #define STENCILOP_INCR                  0x5
 484 #define STENCILOP_DECR                  0x6
 485 #define STENCILOP_INVERT                0x7
 486
 487 #define LOGICOP_CLEAR                   0
 488 #define LOGICOP_NOR                     0x1
 489 #define LOGICOP_AND_INV                 0x2
 490 #define LOGICOP_COPY_INV                0x3
 491 #define LOGICOP_AND_RVRSE               0x4
 492 #define LOGICOP_INV                     0x5
 493 #define LOGICOP_XOR                     0x6
 494 #define LOGICOP_NAND                    0x7
 495 #define LOGICOP_AND                     0x8
 496 #define LOGICOP_EQUIV                   0x9
 497 #define LOGICOP_NOOP                    0xa
 498 #define LOGICOP_OR_INV                  0xb
 499 #define LOGICOP_COPY                    0xc
 500 #define LOGICOP_OR_RVRSE                0xd
 501 #define LOGICOP_OR                      0xe
 502 #define LOGICOP_SET                     0xf
 503
 504 #define BLENDFACT_ZERO                  0x01
 505 #define BLENDFACT_ONE                   0x02
 506 #define BLENDFACT_SRC_COLR              0x03
 507 #define BLENDFACT_INV_SRC_COLR          0x04
 508 #define BLENDFACT_SRC_ALPHA             0x05
 509 #define BLENDFACT_INV_SRC_ALPHA         0x06
 510 #define BLENDFACT_DST_ALPHA             0x07
 511 #define BLENDFACT_INV_DST_ALPHA         0x08
 512 #define BLENDFACT_DST_COLR              0x09
 513 #define BLENDFACT_INV_DST_COLR          0x0a
 514 #define BLENDFACT_SRC_ALPHA_SATURATE    0x0b
 515 #define BLENDFACT_CONST_COLOR           0x0c
 516 #define BLENDFACT_INV_CONST_COLOR       0x0d
 517 #define BLENDFACT_CONST_ALPHA           0x0e
 518 #define BLENDFACT_INV_CONST_ALPHA       0x0f
 519 #define BLENDFACT_MASK                  0x0f
 520
 521 enum {
 522    DRI_CONF_BO_REUSE_DISABLED,
 523    DRI_CONF_BO_REUSE_ALL
 524 };
 525
 526 extern int intel_translate_shadow_compare_func(GLenum func);
 527 extern int intel_translate_compare_func(GLenum func);
 528 extern int intel_translate_stencil_op(GLenum op);
 529 extern int intel_translate_blend_factor(GLenum factor);
 530 extern int intel_translate_logic_op(GLenum opcode);
 531
 532 void intel_update_renderbuffers(__DRIcontext *context,
 533                                 __DRIdrawable *drawable);
 534 void intel_prepare_render(struct intel_context *intel);
 535
 536 void i915_set_buf_info_for_region(uint32_t *state, struct intel_region *region,
 537                                   uint32_t buffer_id);
 538
 539 /*======================================================================
 540  * Inline conversion functions.
 541  * These are better-typed than the macros used previously:
 542  */
 543 static INLINE struct intel_context *
 544 intel_context(struct gl_context * ctx)
 545 {
 546    return (struct intel_context *) ctx;
 547 }
 548
 549 static INLINE GLboolean
 550 is_power_of_two(uint32_t value)
 551 {
 552    return (value & (value - 1)) == 0;
 553 }
 554
 555 #endif