src/mesa/drivers/dri/i965/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 struct intel_region;
  57 struct intel_context;
  58
  59 #define INTEL_WRITE_PART  0x1
  60 #define INTEL_WRITE_FULL  0x2
  61 #define INTEL_READ        0x4
  62
  63 #ifndef likely
  64 #ifdef __GNUC__
  65 #define likely(expr) (__builtin_expect(expr, 1))
  66 #define unlikely(expr) (__builtin_expect(expr, 0))
  67 #else
  68 #define likely(expr) (expr)
  69 #define unlikely(expr) (expr)
  70 #endif
  71 #endif
  72
  73 struct intel_sync_object {
  74    struct gl_sync_object Base;
  75
  76    /** Batch associated with this sync object */
  77    drm_intel_bo *bo;
  78 };
  79
  80 struct brw_context;
  81
  82 struct intel_batchbuffer {
  83    /** Current batchbuffer being queued up. */
  84    drm_intel_bo *bo;
  85    /** Last BO submitted to the hardware.  Used for glFinish(). */
  86    drm_intel_bo *last_bo;
  87    /** BO for post-sync nonzero writes for gen6 workaround. */
  88    drm_intel_bo *workaround_bo;
  89    bool need_workaround_flush;
  90
  91    struct cached_batch_item *cached_items;
  92
  93    uint16_t emit, total;
  94    uint16_t used, reserved_space;
  95    uint32_t *map;
  96    uint32_t *cpu_map;
  97 #define BATCH_SZ (8192*sizeof(uint32_t))
  98
  99    uint32_t state_batch_offset;
 100    bool is_blit;
 101    bool needs_sol_reset;
 102
 103    struct {
 104       uint16_t used;
 105       int reloc_count;
 106    } saved;
 107 };
 108
 109 /**
 110  * intel_context is derived from Mesa's context class: struct gl_context.
 111  */
 112 struct intel_context
 113 {
 114    struct gl_context ctx;  /**< base class, must be first field */
 115
 116    GLuint NewGLState;
 117
 118    /**
 119     * Generation number of the hardware: 2 is 8xx, 3 is 9xx pre-965, 4 is 965.
 120     */
 121    int gen;
 122    int gt;
 123    bool is_haswell;
 124    bool is_baytrail;
 125    bool is_g4x;
 126    bool has_separate_stencil;
 127    bool must_use_separate_stencil;
 128    bool has_hiz;
 129    bool has_llc;
 130    bool has_swizzling;
 131
 132    drm_intel_bo *first_post_swapbuffers_batch;
 133    bool need_throttle;
 134    bool no_batch_wrap;
 135
 136    /**
 137     * Set if we're either a debug context or the INTEL_DEBUG=perf environment
 138     * variable is set, this is the flag indicating to do expensive work that
 139     * might lead to a perf_debug() call.
 140     */
 141    bool perf_debug;
 142
 143    struct {
 144       drm_intel_bo *bo;
 145       GLuint offset;
 146       uint32_t buffer_len;
 147       uint32_t buffer_offset;
 148       char buffer[4096];
 149    } upload;
 150
 151    uint32_t max_gtt_map_object_size;
 152
 153    int driFd;
 154
 155    __DRIcontext *driContext;
 156    struct intel_screen *intelScreen;
 157 };
 158
 159 /**
 160  * Align a value down to an alignment value
 161  *
 162  * If \c value is not already aligned to the requested alignment value, it
 163  * will be rounded down.
 164  *
 165  * \param value  Value to be rounded
 166  * \param alignment  Alignment value to be used.  This must be a power of two.
 167  *
 168  * \sa ALIGN()
 169  */
 170 #define ROUND_DOWN_TO(value, alignment) ((value) & ~(alignment - 1))
 171
 172 static INLINE uint32_t
 173 U_FIXED(float value, uint32_t frac_bits)
 174 {
 175    value *= (1 << frac_bits);
 176    return value < 0 ? 0 : value;
 177 }
 178
 179 static INLINE uint32_t
 180 S_FIXED(float value, uint32_t frac_bits)
 181 {
 182    return value * (1 << frac_bits);
 183 }
 184
 185 /* ================================================================
 186  * From linux kernel i386 header files, copes with odd sizes better
 187  * than COPY_DWORDS would:
 188  * XXX Put this in src/mesa/main/imports.h ???
 189  */
 190 #if defined(i386) || defined(__i386__)
 191 static INLINE void * __memcpy(void * to, const void * from, size_t n)
 192 {
 193    int d0, d1, d2;
 194    __asm__ __volatile__(
 195       "rep ; movsl\n\t"
 196       "testb $2,%b4\n\t"
 197       "je 1f\n\t"
 198       "movsw\n"
 199       "1:\ttestb $1,%b4\n\t"
 200       "je 2f\n\t"
 201       "movsb\n"
 202       "2:"
 203       : "=&c" (d0), "=&D" (d1), "=&S" (d2)
 204       :"0" (n/4), "q" (n),"1" ((long) to),"2" ((long) from)
 205       : "memory");
 206    return (to);
 207 }
 208 #else
 209 #define __memcpy(a,b,c) memcpy(a,b,c)
 210 #endif
 211
 212
 213 /* ================================================================
 214  * Debugging:
 215  */
 216 extern int INTEL_DEBUG;
 217
 218 #define DEBUG_TEXTURE   0x1
 219 #define DEBUG_STATE     0x2
 220 #define DEBUG_IOCTL     0x4
 221 #define DEBUG_BLIT      0x8
 222 #define DEBUG_MIPTREE   0x10
 223 #define DEBUG_PERF      0x20
 224 #define DEBUG_BATCH     0x80
 225 #define DEBUG_PIXEL     0x100
 226 #define DEBUG_BUFMGR    0x200
 227 #define DEBUG_REGION    0x400
 228 #define DEBUG_FBO       0x800
 229 #define DEBUG_GS        0x1000
 230 #define DEBUG_SYNC      0x2000
 231 #define DEBUG_PRIMS     0x4000
 232 #define DEBUG_VERTS     0x8000
 233 #define DEBUG_DRI       0x10000
 234 #define DEBUG_SF        0x20000
 235 #define DEBUG_STATS     0x100000
 236 #define DEBUG_WM        0x400000
 237 #define DEBUG_URB       0x800000
 238 #define DEBUG_VS        0x1000000
 239 #define DEBUG_CLIP      0x2000000
 240 #define DEBUG_AUB       0x4000000
 241 #define DEBUG_SHADER_TIME 0x8000000
 242 #define DEBUG_BLORP     0x10000000
 243 #define DEBUG_NO16      0x20000000
 244
 245 #ifdef HAVE_ANDROID_PLATFORM
 246 #define LOG_TAG "INTEL-MESA"
 247 #include <cutils/log.h>
 248 #ifndef ALOGW
 249 #define ALOGW LOGW
 250 #endif
 251 #define dbg_printf(...) ALOGW(__VA_ARGS__)
 252 #else
 253 #define dbg_printf(...) printf(__VA_ARGS__)
 254 #endif /* HAVE_ANDROID_PLATFORM */
 255
 256 #define DBG(...) do {                                           \
 257         if (unlikely(INTEL_DEBUG & FILE_DEBUG_FLAG))            \
 258                 dbg_printf(__VA_ARGS__);                        \
 259 } while(0)
 260
 261 #define perf_debug(...) do {                                    \
 262    static GLuint msg_id = 0;                                    \
 263    if (unlikely(INTEL_DEBUG & DEBUG_PERF))                      \
 264       dbg_printf(__VA_ARGS__);                                  \
 265    if (intel->perf_debug)                                       \
 266       _mesa_gl_debug(&intel->ctx, &msg_id,                      \
 267                      MESA_DEBUG_TYPE_PERFORMANCE,               \
 268                      MESA_DEBUG_SEVERITY_MEDIUM,                \
 269                      __VA_ARGS__);                              \
 270 } while(0)
 271
 272 #define WARN_ONCE(cond, fmt...) do {                            \
 273    if (unlikely(cond)) {                                        \
 274       static bool _warned = false;                              \
 275       static GLuint msg_id = 0;                                 \
 276       if (!_warned) {                                           \
 277          fprintf(stderr, "WARNING: ");                          \
 278          fprintf(stderr, fmt);                                  \
 279          _warned = true;                                        \
 280                                                                 \
 281          _mesa_gl_debug(ctx, &msg_id,                           \
 282                         MESA_DEBUG_TYPE_OTHER,                  \
 283                         MESA_DEBUG_SEVERITY_HIGH, fmt);         \
 284       }                                                         \
 285    }                                                            \
 286 } while (0)
 287
 288 /* ================================================================
 289  * intel_context.c:
 290  */
 291
 292 extern bool intelInitContext(struct brw_context *brw,
 293                              int api,
 294                              unsigned major_version,
 295                              unsigned minor_version,
 296                              const struct gl_config * mesaVis,
 297                              __DRIcontext * driContextPriv,
 298                              void *sharedContextPrivate,
 299                              struct dd_function_table *functions,
 300                              unsigned *dri_ctx_error);
 301
 302 extern void intelFinish(struct gl_context * ctx);
 303 extern void _intel_flush(struct gl_context * ctx, const char *file, int line);
 304
 305 #define intel_flush(ctx) _intel_flush(ctx, __FILE__, __LINE__)
 306
 307 extern void intelInitDriverFunctions(struct dd_function_table *functions);
 308
 309 void intel_init_syncobj_functions(struct dd_function_table *functions);
 310
 311 enum {
 312    DRI_CONF_BO_REUSE_DISABLED,
 313    DRI_CONF_BO_REUSE_ALL
 314 };
 315
 316 extern int intel_translate_shadow_compare_func(GLenum func);
 317 extern int intel_translate_compare_func(GLenum func);
 318 extern int intel_translate_stencil_op(GLenum op);
 319 extern int intel_translate_logic_op(GLenum opcode);
 320
 321 void intel_update_renderbuffers(__DRIcontext *context,
 322                                 __DRIdrawable *drawable);
 323 void intel_prepare_render(struct brw_context *brw);
 324
 325 void
 326 intel_resolve_for_dri2_flush(struct brw_context *brw,
 327                              __DRIdrawable *drawable);
 328
 329 extern void
 330 intelInitExtensions(struct gl_context *ctx);
 331 extern void
 332 intelInitClearFuncs(struct dd_function_table *functions);
 333
 334 /*======================================================================
 335  * Inline conversion functions.
 336  * These are better-typed than the macros used previously:
 337  */
 338 static INLINE struct intel_context *
 339 intel_context(struct gl_context * ctx)
 340 {
 341    return (struct intel_context *) ctx;
 342 }
 343
 344 static INLINE bool
 345 is_power_of_two(uint32_t value)
 346 {
 347    return (value & (value - 1)) == 0;
 348 }
 349
 350 #ifdef __cplusplus
 351 }
 352 #endif
 353
 354 #endif