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