src/mesa/drivers/dri/i915/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 <string.h>
  34 #include "main/mtypes.h"
  35 #include "main/mm.h"
  36
  37 #ifdef __cplusplus
  38 extern "C" {
  39         /* Evil hack for using libdrm in a c++ compiler. */
  40         #define virtual virt
  41 #endif
  42
  43 #include "drm.h"
  44 #include "intel_bufmgr.h"
  45
  46 #include "intel_screen.h"
  47 #include "intel_tex_obj.h"
  48 #include "i915_drm.h"
  49
  50 #ifdef __cplusplus
  51         #undef virtual
  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                           bool 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 #ifndef likely
  99 #ifdef __GNUC__
 100 #define likely(expr) (__builtin_expect(expr, 1))
 101 #define unlikely(expr) (__builtin_expect(expr, 0))
 102 #else
 103 #define likely(expr) (expr)
 104 #define unlikely(expr) (expr)
 105 #endif
 106 #endif
 107
 108 struct intel_sync_object {
 109    struct gl_sync_object Base;
 110
 111    /** Batch associated with this sync object */
 112    drm_intel_bo *bo;
 113 };
 114
 115 struct intel_batchbuffer {
 116    /** Current batchbuffer being queued up. */
 117    drm_intel_bo *bo;
 118    /** Last BO submitted to the hardware.  Used for glFinish(). */
 119    drm_intel_bo *last_bo;
 120
 121    uint16_t emit, total;
 122    uint16_t used, reserved_space;
 123    uint32_t *map;
 124    uint32_t *cpu_map;
 125 #define BATCH_SZ (8192*sizeof(uint32_t))
 126 };
 127
 128 /**
 129  * intel_context is derived from Mesa's context class: struct gl_context.
 130  */
 131 struct intel_context
 132 {
 133    struct gl_context ctx;  /**< base class, must be first field */
 134
 135    struct
 136    {
 137       void (*destroy) (struct intel_context * intel);
 138       void (*emit_state) (struct intel_context * intel);
 139       void (*finish_batch) (struct intel_context * intel);
 140       void (*new_batch) (struct intel_context * intel);
 141       void (*emit_invarient_state) (struct intel_context * intel);
 142       void (*update_texture_state) (struct intel_context * intel);
 143
 144       void (*render_start) (struct intel_context * intel);
 145       void (*render_prevalidate) (struct intel_context * intel);
 146       void (*set_draw_region) (struct intel_context * intel,
 147                                struct intel_region * draw_regions[],
 148                                struct intel_region * depth_region,
 149                                GLuint num_regions);
 150       void (*update_draw_buffer)(struct intel_context *intel);
 151
 152       void (*reduced_primitive_state) (struct intel_context * intel,
 153                                        GLenum rprim);
 154
 155       bool (*check_vertex_size) (struct intel_context * intel,
 156                                       GLuint expected);
 157       void (*invalidate_state) (struct intel_context *intel,
 158                                 GLuint new_state);
 159
 160       void (*assert_not_dirty) (struct intel_context *intel);
 161
 162       void (*debug_batch)(struct intel_context *intel);
 163       void (*annotate_aub)(struct intel_context *intel);
 164       bool (*render_target_supported)(struct intel_context *intel,
 165                                       struct gl_renderbuffer *rb);
 166    } vtbl;
 167
 168    GLbitfield Fallback;  /**< mask of INTEL_FALLBACK_x bits */
 169    GLuint NewGLState;
 170
 171    dri_bufmgr *bufmgr;
 172    unsigned int maxBatchSize;
 173
 174    /**
 175     * Generation number of the hardware: 2 is 8xx, 3 is 9xx pre-965, 4 is 965.
 176     */
 177    int gen;
 178    bool is_945;
 179    bool has_swizzling;
 180
 181    struct intel_batchbuffer batch;
 182
 183    drm_intel_bo *first_post_swapbuffers_batch;
 184    bool need_throttle;
 185    bool no_batch_wrap;
 186    bool tnl_pipeline_running; /**< Set while i915's _tnl_run_pipeline. */
 187
 188    /**
 189     * Set if we're either a debug context or the INTEL_DEBUG=perf environment
 190     * variable is set, this is the flag indicating to do expensive work that
 191     * might lead to a perf_debug() call.
 192     */
 193    bool perf_debug;
 194
 195    struct
 196    {
 197       GLuint id;
 198       uint32_t start_ptr; /**< for i8xx */
 199       uint32_t primitive;       /**< Current hardware primitive type */
 200       void (*flush) (struct intel_context *);
 201       drm_intel_bo *vb_bo;
 202       uint8_t *vb;
 203       unsigned int start_offset; /**< Byte offset of primitive sequence */
 204       unsigned int current_offset; /**< Byte offset of next vertex */
 205       unsigned int count;       /**< Number of vertices in current primitive */
 206    } prim;
 207
 208    struct {
 209       drm_intel_bo *bo;
 210       GLuint offset;
 211       uint32_t buffer_len;
 212       uint32_t buffer_offset;
 213       char buffer[4096];
 214    } upload;
 215
 216    uint32_t max_gtt_map_object_size;
 217
 218    /* Offsets of fields within the current vertex:
 219     */
 220    GLuint coloroffset;
 221    GLuint specoffset;
 222    GLuint wpos_offset;
 223
 224    struct tnl_attr_map vertex_attrs[VERT_ATTRIB_MAX];
 225    GLuint vertex_attr_count;
 226
 227    GLfloat polygon_offset_scale;        /* dependent on depth_scale, bpp */
 228
 229    bool hw_stencil;
 230    bool hw_stipple;
 231    bool no_rast;
 232    bool always_flush_batch;
 233    bool always_flush_cache;
 234    bool disable_throttling;
 235
 236    /* State for intelvb.c and inteltris.c.
 237     */
 238    GLuint RenderIndex;
 239    GLmatrix ViewportMatrix;
 240    GLenum render_primitive;
 241    GLenum reduced_primitive; /*< Only gen < 6 */
 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    bool 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    bool 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    bool is_front_buffer_reading;
 274
 275    bool use_early_z;
 276
 277    int driFd;
 278
 279    __DRIcontext *driContext;
 280    struct intel_screen *intelScreen;
 281    void (*saved_viewport)(struct gl_context * ctx,
 282                           GLint x, GLint y, GLsizei width, GLsizei height);
 283
 284    /**
 285     * Configuration cache
 286     */
 287    driOptionCache optionCache;
 288 };
 289
 290 extern char *__progname;
 291
 292
 293 #define SUBPIXEL_X 0.125
 294 #define SUBPIXEL_Y 0.125
 295
 296 /**
 297  * Align a value down to an alignment value
 298  *
 299  * If \c value is not already aligned to the requested alignment value, it
 300  * will be rounded down.
 301  *
 302  * \param value  Value to be rounded
 303  * \param alignment  Alignment value to be used.  This must be a power of two.
 304  *
 305  * \sa ALIGN()
 306  */
 307 #define ROUND_DOWN_TO(value, alignment) ((value) & ~(alignment - 1))
 308
 309 static INLINE uint32_t
 310 U_FIXED(float value, uint32_t frac_bits)
 311 {
 312    value *= (1 << frac_bits);
 313    return value < 0 ? 0 : value;
 314 }
 315
 316 static INLINE uint32_t
 317 S_FIXED(float value, uint32_t frac_bits)
 318 {
 319    return value * (1 << frac_bits);
 320 }
 321
 322 #define INTEL_FIREVERTICES(intel)               \
 323 do {                                            \
 324    if ((intel)->prim.flush)                     \
 325       (intel)->prim.flush(intel);               \
 326 } while (0)
 327
 328 /* ================================================================
 329  * From linux kernel i386 header files, copes with odd sizes better
 330  * than COPY_DWORDS would:
 331  * XXX Put this in src/mesa/main/imports.h ???
 332  */
 333 #if defined(i386) || defined(__i386__)
 334 static INLINE void * __memcpy(void * to, const void * from, size_t n)
 335 {
 336    int d0, d1, d2;
 337    __asm__ __volatile__(
 338       "rep ; movsl\n\t"
 339       "testb $2,%b4\n\t"
 340       "je 1f\n\t"
 341       "movsw\n"
 342       "1:\ttestb $1,%b4\n\t"
 343       "je 2f\n\t"
 344       "movsb\n"
 345       "2:"
 346       : "=&c" (d0), "=&D" (d1), "=&S" (d2)
 347       :"0" (n/4), "q" (n),"1" ((long) to),"2" ((long) from)
 348       : "memory");
 349    return (to);
 350 }
 351 #else
 352 #define __memcpy(a,b,c) memcpy(a,b,c)
 353 #endif
 354
 355
 356 /* ================================================================
 357  * Debugging:
 358  */
 359 extern int INTEL_DEBUG;
 360
 361 #define DEBUG_TEXTURE   0x1
 362 #define DEBUG_STATE     0x2
 363 #define DEBUG_BLIT      0x8
 364 #define DEBUG_MIPTREE   0x10
 365 #define DEBUG_PERF      0x20
 366 #define DEBUG_BATCH     0x80
 367 #define DEBUG_PIXEL     0x100
 368 #define DEBUG_BUFMGR    0x200
 369 #define DEBUG_REGION    0x400
 370 #define DEBUG_FBO       0x800
 371 #define DEBUG_SYNC      0x2000
 372 #define DEBUG_DRI       0x10000
 373 #define DEBUG_STATS     0x100000
 374 #define DEBUG_WM        0x400000
 375 #define DEBUG_AUB       0x4000000
 376
 377 #ifdef HAVE_ANDROID_PLATFORM
 378 #define LOG_TAG "INTEL-MESA"
 379 #include <cutils/log.h>
 380 #ifndef ALOGW
 381 #define ALOGW LOGW
 382 #endif
 383 #define dbg_printf(...) ALOGW(__VA_ARGS__)
 384 #else
 385 #define dbg_printf(...) printf(__VA_ARGS__)
 386 #endif /* HAVE_ANDROID_PLATFORM */
 387
 388 #define DBG(...) do {                                           \
 389         if (unlikely(INTEL_DEBUG & FILE_DEBUG_FLAG))            \
 390                 dbg_printf(__VA_ARGS__);                        \
 391 } while(0)
 392
 393 #define perf_debug(...) do {                                    \
 394    static GLuint msg_id = 0;                                    \
 395    if (unlikely(INTEL_DEBUG & DEBUG_PERF))                      \
 396       dbg_printf(__VA_ARGS__);                                  \
 397    if (intel->perf_debug)                                       \
 398       _mesa_gl_debug(&intel->ctx, &msg_id,                      \
 399                      MESA_DEBUG_TYPE_PERFORMANCE,               \
 400                      MESA_DEBUG_SEVERITY_MEDIUM,                \
 401                      __VA_ARGS__);                              \
 402 } while(0)
 403
 404 #define WARN_ONCE(cond, fmt...) do {                            \
 405    if (unlikely(cond)) {                                        \
 406       static bool _warned = false;                              \
 407       static GLuint msg_id = 0;                                 \
 408       if (!_warned) {                                           \
 409          fprintf(stderr, "WARNING: ");                          \
 410          fprintf(stderr, fmt);                                  \
 411          _warned = true;                                        \
 412                                                                 \
 413          _mesa_gl_debug(ctx, &msg_id,                           \
 414                         MESA_DEBUG_TYPE_OTHER,                  \
 415                         MESA_DEBUG_SEVERITY_HIGH, fmt);         \
 416       }                                                         \
 417    }                                                            \
 418 } while (0)
 419
 420 /* ================================================================
 421  * intel_context.c:
 422  */
 423
 424 extern bool intelInitContext(struct intel_context *intel,
 425                              int api,
 426                              unsigned major_version,
 427                              unsigned minor_version,
 428                              const struct gl_config * mesaVis,
 429                              __DRIcontext * driContextPriv,
 430                              void *sharedContextPrivate,
 431                              struct dd_function_table *functions,
 432                              unsigned *dri_ctx_error);
 433
 434 extern void intelFinish(struct gl_context * ctx);
 435 extern void intel_flush_rendering_to_batch(struct gl_context *ctx);
 436 extern void _intel_flush(struct gl_context * ctx, const char *file, int line);
 437
 438 #define intel_flush(ctx) _intel_flush(ctx, __FILE__, __LINE__)
 439
 440 extern void intelInitDriverFunctions(struct dd_function_table *functions);
 441
 442 void intel_init_syncobj_functions(struct dd_function_table *functions);
 443
 444
 445 /* ================================================================
 446  * intel_state.c:
 447  */
 448
 449 #define COMPAREFUNC_ALWAYS              0
 450 #define COMPAREFUNC_NEVER               0x1
 451 #define COMPAREFUNC_LESS                0x2
 452 #define COMPAREFUNC_EQUAL               0x3
 453 #define COMPAREFUNC_LEQUAL              0x4
 454 #define COMPAREFUNC_GREATER             0x5
 455 #define COMPAREFUNC_NOTEQUAL            0x6
 456 #define COMPAREFUNC_GEQUAL              0x7
 457
 458 #define STENCILOP_KEEP                  0
 459 #define STENCILOP_ZERO                  0x1
 460 #define STENCILOP_REPLACE               0x2
 461 #define STENCILOP_INCRSAT               0x3
 462 #define STENCILOP_DECRSAT               0x4
 463 #define STENCILOP_INCR                  0x5
 464 #define STENCILOP_DECR                  0x6
 465 #define STENCILOP_INVERT                0x7
 466
 467 #define LOGICOP_CLEAR                   0
 468 #define LOGICOP_NOR                     0x1
 469 #define LOGICOP_AND_INV                 0x2
 470 #define LOGICOP_COPY_INV                0x3
 471 #define LOGICOP_AND_RVRSE               0x4
 472 #define LOGICOP_INV                     0x5
 473 #define LOGICOP_XOR                     0x6
 474 #define LOGICOP_NAND                    0x7
 475 #define LOGICOP_AND                     0x8
 476 #define LOGICOP_EQUIV                   0x9
 477 #define LOGICOP_NOOP                    0xa
 478 #define LOGICOP_OR_INV                  0xb
 479 #define LOGICOP_COPY                    0xc
 480 #define LOGICOP_OR_RVRSE                0xd
 481 #define LOGICOP_OR                      0xe
 482 #define LOGICOP_SET                     0xf
 483
 484 #define BLENDFACT_ZERO                  0x01
 485 #define BLENDFACT_ONE                   0x02
 486 #define BLENDFACT_SRC_COLR              0x03
 487 #define BLENDFACT_INV_SRC_COLR          0x04
 488 #define BLENDFACT_SRC_ALPHA             0x05
 489 #define BLENDFACT_INV_SRC_ALPHA         0x06
 490 #define BLENDFACT_DST_ALPHA             0x07
 491 #define BLENDFACT_INV_DST_ALPHA         0x08
 492 #define BLENDFACT_DST_COLR              0x09
 493 #define BLENDFACT_INV_DST_COLR          0x0a
 494 #define BLENDFACT_SRC_ALPHA_SATURATE    0x0b
 495 #define BLENDFACT_CONST_COLOR           0x0c
 496 #define BLENDFACT_INV_CONST_COLOR       0x0d
 497 #define BLENDFACT_CONST_ALPHA           0x0e
 498 #define BLENDFACT_INV_CONST_ALPHA       0x0f
 499 #define BLENDFACT_MASK                  0x0f
 500
 501 enum {
 502    DRI_CONF_BO_REUSE_DISABLED,
 503    DRI_CONF_BO_REUSE_ALL
 504 };
 505
 506 extern int intel_translate_shadow_compare_func(GLenum func);
 507 extern int intel_translate_compare_func(GLenum func);
 508 extern int intel_translate_stencil_op(GLenum op);
 509 extern int intel_translate_blend_factor(GLenum factor);
 510 extern int intel_translate_logic_op(GLenum opcode);
 511
 512 void intel_update_renderbuffers(__DRIcontext *context,
 513                                 __DRIdrawable *drawable);
 514 void intel_prepare_render(struct intel_context *intel);
 515
 516 void i915_set_buf_info_for_region(uint32_t *state, struct intel_region *region,
 517                                   uint32_t buffer_id);
 518 void intel_init_texture_formats(struct gl_context *ctx);
 519
 520 /*======================================================================
 521  * Inline conversion functions.
 522  * These are better-typed than the macros used previously:
 523  */
 524 static INLINE struct intel_context *
 525 intel_context(struct gl_context * ctx)
 526 {
 527    return (struct intel_context *) ctx;
 528 }
 529
 530 static INLINE bool
 531 is_power_of_two(uint32_t value)
 532 {
 533    return (value & (value - 1)) == 0;
 534 }
 535
 536 #ifdef __cplusplus
 537 }
 538 #endif
 539
 540 #endif