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    bool no_batch_wrap;
 133
 134    /**
 135     * Set if we're either a debug context or the INTEL_DEBUG=perf environment
 136     * variable is set, this is the flag indicating to do expensive work that
 137     * might lead to a perf_debug() call.
 138     */
 139    bool perf_debug;
 140
 141    struct {
 142       drm_intel_bo *bo;
 143       GLuint offset;
 144       uint32_t buffer_len;
 145       uint32_t buffer_offset;
 146       char buffer[4096];
 147    } upload;
 148
 149    uint32_t max_gtt_map_object_size;
 150
 151    int driFd;
 152
 153    __DRIcontext *driContext;
 154    struct intel_screen *intelScreen;
 155 };
 156
 157 /**
 158  * Align a value down to an alignment value
 159  *
 160  * If \c value is not already aligned to the requested alignment value, it
 161  * will be rounded down.
 162  *
 163  * \param value  Value to be rounded
 164  * \param alignment  Alignment value to be used.  This must be a power of two.
 165  *
 166  * \sa ALIGN()
 167  */
 168 #define ROUND_DOWN_TO(value, alignment) ((value) & ~(alignment - 1))
 169
 170 static INLINE uint32_t
 171 U_FIXED(float value, uint32_t frac_bits)
 172 {
 173    value *= (1 << frac_bits);
 174    return value < 0 ? 0 : value;
 175 }
 176
 177 static INLINE uint32_t
 178 S_FIXED(float value, uint32_t frac_bits)
 179 {
 180    return value * (1 << frac_bits);
 181 }
 182
 183 /* ================================================================
 184  * From linux kernel i386 header files, copes with odd sizes better
 185  * than COPY_DWORDS would:
 186  * XXX Put this in src/mesa/main/imports.h ???
 187  */
 188 #if defined(i386) || defined(__i386__)
 189 static INLINE void * __memcpy(void * to, const void * from, size_t n)
 190 {
 191    int d0, d1, d2;
 192    __asm__ __volatile__(
 193       "rep ; movsl\n\t"
 194       "testb $2,%b4\n\t"
 195       "je 1f\n\t"
 196       "movsw\n"
 197       "1:\ttestb $1,%b4\n\t"
 198       "je 2f\n\t"
 199       "movsb\n"
 200       "2:"
 201       : "=&c" (d0), "=&D" (d1), "=&S" (d2)
 202       :"0" (n/4), "q" (n),"1" ((long) to),"2" ((long) from)
 203       : "memory");
 204    return (to);
 205 }
 206 #else
 207 #define __memcpy(a,b,c) memcpy(a,b,c)
 208 #endif
 209
 210
 211 /* ================================================================
 212  * Debugging:
 213  */
 214 extern int INTEL_DEBUG;
 215
 216 #define DEBUG_TEXTURE   0x1
 217 #define DEBUG_STATE     0x2
 218 #define DEBUG_IOCTL     0x4
 219 #define DEBUG_BLIT      0x8
 220 #define DEBUG_MIPTREE   0x10
 221 #define DEBUG_PERF      0x20
 222 #define DEBUG_BATCH     0x80
 223 #define DEBUG_PIXEL     0x100
 224 #define DEBUG_BUFMGR    0x200
 225 #define DEBUG_REGION    0x400
 226 #define DEBUG_FBO       0x800
 227 #define DEBUG_GS        0x1000
 228 #define DEBUG_SYNC      0x2000
 229 #define DEBUG_PRIMS     0x4000
 230 #define DEBUG_VERTS     0x8000
 231 #define DEBUG_DRI       0x10000
 232 #define DEBUG_SF        0x20000
 233 #define DEBUG_STATS     0x100000
 234 #define DEBUG_WM        0x400000
 235 #define DEBUG_URB       0x800000
 236 #define DEBUG_VS        0x1000000
 237 #define DEBUG_CLIP      0x2000000
 238 #define DEBUG_AUB       0x4000000
 239 #define DEBUG_SHADER_TIME 0x8000000
 240 #define DEBUG_BLORP     0x10000000
 241 #define DEBUG_NO16      0x20000000
 242
 243 #ifdef HAVE_ANDROID_PLATFORM
 244 #define LOG_TAG "INTEL-MESA"
 245 #include <cutils/log.h>
 246 #ifndef ALOGW
 247 #define ALOGW LOGW
 248 #endif
 249 #define dbg_printf(...) ALOGW(__VA_ARGS__)
 250 #else
 251 #define dbg_printf(...) printf(__VA_ARGS__)
 252 #endif /* HAVE_ANDROID_PLATFORM */
 253
 254 #define DBG(...) do {                                           \
 255         if (unlikely(INTEL_DEBUG & FILE_DEBUG_FLAG))            \
 256                 dbg_printf(__VA_ARGS__);                        \
 257 } while(0)
 258
 259 #define perf_debug(...) do {                                    \
 260    static GLuint msg_id = 0;                                    \
 261    if (unlikely(INTEL_DEBUG & DEBUG_PERF))                      \
 262       dbg_printf(__VA_ARGS__);                                  \
 263    if (intel->perf_debug)                                       \
 264       _mesa_gl_debug(&intel->ctx, &msg_id,                      \
 265                      MESA_DEBUG_TYPE_PERFORMANCE,               \
 266                      MESA_DEBUG_SEVERITY_MEDIUM,                \
 267                      __VA_ARGS__);                              \
 268 } while(0)
 269
 270 #define WARN_ONCE(cond, fmt...) do {                            \
 271    if (unlikely(cond)) {                                        \
 272       static bool _warned = false;                              \
 273       static GLuint msg_id = 0;                                 \
 274       if (!_warned) {                                           \
 275          fprintf(stderr, "WARNING: ");                          \
 276          fprintf(stderr, fmt);                                  \
 277          _warned = true;                                        \
 278                                                                 \
 279          _mesa_gl_debug(ctx, &msg_id,                           \
 280                         MESA_DEBUG_TYPE_OTHER,                  \
 281                         MESA_DEBUG_SEVERITY_HIGH, fmt);         \
 282       }                                                         \
 283    }                                                            \
 284 } while (0)
 285
 286 /* ================================================================
 287  * intel_context.c:
 288  */
 289
 290 extern bool intelInitContext(struct brw_context *brw,
 291                              int api,
 292                              unsigned major_version,
 293                              unsigned minor_version,
 294                              const struct gl_config * mesaVis,
 295                              __DRIcontext * driContextPriv,
 296                              void *sharedContextPrivate,
 297                              struct dd_function_table *functions,
 298                              unsigned *dri_ctx_error);
 299
 300 extern void intelFinish(struct gl_context * ctx);
 301 extern void _intel_flush(struct gl_context * ctx, const char *file, int line);
 302
 303 #define intel_flush(ctx) _intel_flush(ctx, __FILE__, __LINE__)
 304
 305 extern void intelInitDriverFunctions(struct dd_function_table *functions);
 306
 307 void intel_init_syncobj_functions(struct dd_function_table *functions);
 308
 309 enum {
 310    DRI_CONF_BO_REUSE_DISABLED,
 311    DRI_CONF_BO_REUSE_ALL
 312 };
 313
 314 extern int intel_translate_shadow_compare_func(GLenum func);
 315 extern int intel_translate_compare_func(GLenum func);
 316 extern int intel_translate_stencil_op(GLenum op);
 317 extern int intel_translate_logic_op(GLenum opcode);
 318
 319 void intel_update_renderbuffers(__DRIcontext *context,
 320                                 __DRIdrawable *drawable);
 321 void intel_prepare_render(struct brw_context *brw);
 322
 323 void
 324 intel_resolve_for_dri2_flush(struct brw_context *brw,
 325                              __DRIdrawable *drawable);
 326
 327 extern void
 328 intelInitExtensions(struct gl_context *ctx);
 329 extern void
 330 intelInitClearFuncs(struct dd_function_table *functions);
 331
 332 /*======================================================================
 333  * Inline conversion functions.
 334  * These are better-typed than the macros used previously:
 335  */
 336 static INLINE struct intel_context *
 337 intel_context(struct gl_context * ctx)
 338 {
 339    return (struct intel_context *) ctx;
 340 }
 341
 342 static INLINE bool
 343 is_power_of_two(uint32_t value)
 344 {
 345    return (value & (value - 1)) == 0;
 346 }
 347
 348 #ifdef __cplusplus
 349 }
 350 #endif
 351
 352 #endif