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 static INLINE uint32_t
 297 U_FIXED(float value, uint32_t frac_bits)
 298 {
 299    value *= (1 << frac_bits);
 300    return value < 0 ? 0 : value;
 301 }
 302
 303 static INLINE uint32_t
 304 S_FIXED(float value, uint32_t frac_bits)
 305 {
 306    return value * (1 << frac_bits);
 307 }
 308
 309 #define INTEL_FIREVERTICES(intel)               \
 310 do {                                            \
 311    if ((intel)->prim.flush)                     \
 312       (intel)->prim.flush(intel);               \
 313 } while (0)
 314
 315 /* ================================================================
 316  * From linux kernel i386 header files, copes with odd sizes better
 317  * than COPY_DWORDS would:
 318  * XXX Put this in src/mesa/main/imports.h ???
 319  */
 320 #if defined(i386) || defined(__i386__)
 321 static INLINE void * __memcpy(void * to, const void * from, size_t n)
 322 {
 323    int d0, d1, d2;
 324    __asm__ __volatile__(
 325       "rep ; movsl\n\t"
 326       "testb $2,%b4\n\t"
 327       "je 1f\n\t"
 328       "movsw\n"
 329       "1:\ttestb $1,%b4\n\t"
 330       "je 2f\n\t"
 331       "movsb\n"
 332       "2:"
 333       : "=&c" (d0), "=&D" (d1), "=&S" (d2)
 334       :"0" (n/4), "q" (n),"1" ((long) to),"2" ((long) from)
 335       : "memory");
 336    return (to);
 337 }
 338 #else
 339 #define __memcpy(a,b,c) memcpy(a,b,c)
 340 #endif
 341
 342
 343 /* ================================================================
 344  * Debugging:
 345  */
 346 extern int INTEL_DEBUG;
 347
 348 #define DEBUG_TEXTURE   0x1
 349 #define DEBUG_STATE     0x2
 350 #define DEBUG_BLIT      0x8
 351 #define DEBUG_MIPTREE   0x10
 352 #define DEBUG_PERF      0x20
 353 #define DEBUG_BATCH     0x80
 354 #define DEBUG_PIXEL     0x100
 355 #define DEBUG_BUFMGR    0x200
 356 #define DEBUG_REGION    0x400
 357 #define DEBUG_FBO       0x800
 358 #define DEBUG_SYNC      0x2000
 359 #define DEBUG_DRI       0x10000
 360 #define DEBUG_STATS     0x100000
 361 #define DEBUG_WM        0x400000
 362 #define DEBUG_AUB       0x4000000
 363
 364 #ifdef HAVE_ANDROID_PLATFORM
 365 #define LOG_TAG "INTEL-MESA"
 366 #include <cutils/log.h>
 367 #ifndef ALOGW
 368 #define ALOGW LOGW
 369 #endif
 370 #define dbg_printf(...) ALOGW(__VA_ARGS__)
 371 #else
 372 #define dbg_printf(...) printf(__VA_ARGS__)
 373 #endif /* HAVE_ANDROID_PLATFORM */
 374
 375 #define DBG(...) do {                                           \
 376         if (unlikely(INTEL_DEBUG & FILE_DEBUG_FLAG))            \
 377                 dbg_printf(__VA_ARGS__);                        \
 378 } while(0)
 379
 380 #define perf_debug(...) do {                                    \
 381    static GLuint msg_id = 0;                                    \
 382    if (unlikely(INTEL_DEBUG & DEBUG_PERF))                      \
 383       dbg_printf(__VA_ARGS__);                                  \
 384    if (intel->perf_debug)                                       \
 385       _mesa_gl_debug(&intel->ctx, &msg_id,                      \
 386                      MESA_DEBUG_TYPE_PERFORMANCE,               \
 387                      MESA_DEBUG_SEVERITY_MEDIUM,                \
 388                      __VA_ARGS__);                              \
 389 } while(0)
 390
 391 #define WARN_ONCE(cond, fmt...) do {                            \
 392    if (unlikely(cond)) {                                        \
 393       static bool _warned = false;                              \
 394       static GLuint msg_id = 0;                                 \
 395       if (!_warned) {                                           \
 396          fprintf(stderr, "WARNING: ");                          \
 397          fprintf(stderr, fmt);                                  \
 398          _warned = true;                                        \
 399                                                                 \
 400          _mesa_gl_debug(ctx, &msg_id,                           \
 401                         MESA_DEBUG_TYPE_OTHER,                  \
 402                         MESA_DEBUG_SEVERITY_HIGH, fmt);         \
 403       }                                                         \
 404    }                                                            \
 405 } while (0)
 406
 407 /* ================================================================
 408  * intel_context.c:
 409  */
 410
 411 extern bool intelInitContext(struct intel_context *intel,
 412                              int api,
 413                              unsigned major_version,
 414                              unsigned minor_version,
 415                              const struct gl_config * mesaVis,
 416                              __DRIcontext * driContextPriv,
 417                              void *sharedContextPrivate,
 418                              struct dd_function_table *functions,
 419                              unsigned *dri_ctx_error);
 420
 421 extern void intelFinish(struct gl_context * ctx);
 422 extern void intel_flush_rendering_to_batch(struct gl_context *ctx);
 423 extern void _intel_flush(struct gl_context * ctx, const char *file, int line);
 424
 425 #define intel_flush(ctx) _intel_flush(ctx, __FILE__, __LINE__)
 426
 427 extern void intelInitDriverFunctions(struct dd_function_table *functions);
 428
 429 void intel_init_syncobj_functions(struct dd_function_table *functions);
 430
 431
 432 /* ================================================================
 433  * intel_state.c:
 434  */
 435
 436 #define COMPAREFUNC_ALWAYS              0
 437 #define COMPAREFUNC_NEVER               0x1
 438 #define COMPAREFUNC_LESS                0x2
 439 #define COMPAREFUNC_EQUAL               0x3
 440 #define COMPAREFUNC_LEQUAL              0x4
 441 #define COMPAREFUNC_GREATER             0x5
 442 #define COMPAREFUNC_NOTEQUAL            0x6
 443 #define COMPAREFUNC_GEQUAL              0x7
 444
 445 #define STENCILOP_KEEP                  0
 446 #define STENCILOP_ZERO                  0x1
 447 #define STENCILOP_REPLACE               0x2
 448 #define STENCILOP_INCRSAT               0x3
 449 #define STENCILOP_DECRSAT               0x4
 450 #define STENCILOP_INCR                  0x5
 451 #define STENCILOP_DECR                  0x6
 452 #define STENCILOP_INVERT                0x7
 453
 454 #define LOGICOP_CLEAR                   0
 455 #define LOGICOP_NOR                     0x1
 456 #define LOGICOP_AND_INV                 0x2
 457 #define LOGICOP_COPY_INV                0x3
 458 #define LOGICOP_AND_RVRSE               0x4
 459 #define LOGICOP_INV                     0x5
 460 #define LOGICOP_XOR                     0x6
 461 #define LOGICOP_NAND                    0x7
 462 #define LOGICOP_AND                     0x8
 463 #define LOGICOP_EQUIV                   0x9
 464 #define LOGICOP_NOOP                    0xa
 465 #define LOGICOP_OR_INV                  0xb
 466 #define LOGICOP_COPY                    0xc
 467 #define LOGICOP_OR_RVRSE                0xd
 468 #define LOGICOP_OR                      0xe
 469 #define LOGICOP_SET                     0xf
 470
 471 #define BLENDFACT_ZERO                  0x01
 472 #define BLENDFACT_ONE                   0x02
 473 #define BLENDFACT_SRC_COLR              0x03
 474 #define BLENDFACT_INV_SRC_COLR          0x04
 475 #define BLENDFACT_SRC_ALPHA             0x05
 476 #define BLENDFACT_INV_SRC_ALPHA         0x06
 477 #define BLENDFACT_DST_ALPHA             0x07
 478 #define BLENDFACT_INV_DST_ALPHA         0x08
 479 #define BLENDFACT_DST_COLR              0x09
 480 #define BLENDFACT_INV_DST_COLR          0x0a
 481 #define BLENDFACT_SRC_ALPHA_SATURATE    0x0b
 482 #define BLENDFACT_CONST_COLOR           0x0c
 483 #define BLENDFACT_INV_CONST_COLOR       0x0d
 484 #define BLENDFACT_CONST_ALPHA           0x0e
 485 #define BLENDFACT_INV_CONST_ALPHA       0x0f
 486 #define BLENDFACT_MASK                  0x0f
 487
 488 enum {
 489    DRI_CONF_BO_REUSE_DISABLED,
 490    DRI_CONF_BO_REUSE_ALL
 491 };
 492
 493 extern int intel_translate_shadow_compare_func(GLenum func);
 494 extern int intel_translate_compare_func(GLenum func);
 495 extern int intel_translate_stencil_op(GLenum op);
 496 extern int intel_translate_blend_factor(GLenum factor);
 497 extern int intel_translate_logic_op(GLenum opcode);
 498
 499 void intel_update_renderbuffers(__DRIcontext *context,
 500                                 __DRIdrawable *drawable);
 501 void intel_prepare_render(struct intel_context *intel);
 502
 503 void i915_set_buf_info_for_region(uint32_t *state, struct intel_region *region,
 504                                   uint32_t buffer_id);
 505 void intel_init_texture_formats(struct gl_context *ctx);
 506
 507 /*======================================================================
 508  * Inline conversion functions.
 509  * These are better-typed than the macros used previously:
 510  */
 511 static INLINE struct intel_context *
 512 intel_context(struct gl_context * ctx)
 513 {
 514    return (struct intel_context *) ctx;
 515 }
 516
 517 static INLINE bool
 518 is_power_of_two(uint32_t value)
 519 {
 520    return (value & (value - 1)) == 0;
 521 }
 522
 523 #ifdef __cplusplus
 524 }
 525 #endif
 526
 527 #endif