src/mesa/drivers/dri/intel/intel_screen.c

   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 #include "main/glheader.h"
  29 #include "main/context.h"
  30 #include "main/framebuffer.h"
  31 #include "main/renderbuffer.h"
  32 #include "main/hash.h"
  33
  34 #include "utils.h"
  35 #include "xmlpool.h"
  36
  37 #include "intel_batchbuffer.h"
  38 #include "intel_buffers.h"
  39 #include "intel_bufmgr.h"
  40 #include "intel_chipset.h"
  41 #include "intel_fbo.h"
  42 #include "intel_screen.h"
  43 #include "intel_tex.h"
  44
  45 #include "i915_drm.h"
  46
  47 #define DRI_CONF_TEXTURE_TILING(def) \
  48         DRI_CONF_OPT_BEGIN(texture_tiling, bool, def)           \
  49                 DRI_CONF_DESC(en, "Enable texture tiling")      \
  50         DRI_CONF_OPT_END                                        \
  51
  52 PUBLIC const char __driConfigOptions[] =
  53    DRI_CONF_BEGIN
  54    DRI_CONF_SECTION_PERFORMANCE
  55       DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_ALWAYS_SYNC)
  56       /* Options correspond to DRI_CONF_BO_REUSE_DISABLED,
  57        * DRI_CONF_BO_REUSE_ALL
  58        */
  59       DRI_CONF_OPT_BEGIN_V(bo_reuse, enum, 1, "0:1")
  60          DRI_CONF_DESC_BEGIN(en, "Buffer object reuse")
  61             DRI_CONF_ENUM(0, "Disable buffer object reuse")
  62             DRI_CONF_ENUM(1, "Enable reuse of all sizes of buffer objects")
  63          DRI_CONF_DESC_END
  64       DRI_CONF_OPT_END
  65
  66 #ifdef I915
  67      DRI_CONF_TEXTURE_TILING(false)
  68 #else
  69      DRI_CONF_TEXTURE_TILING(true)
  70 #endif
  71
  72       DRI_CONF_OPT_BEGIN(early_z, bool, false)
  73          DRI_CONF_DESC(en, "Enable early Z in classic mode (unstable, 945-only).")
  74       DRI_CONF_OPT_END
  75
  76       DRI_CONF_OPT_BEGIN(fragment_shader, bool, false)
  77          DRI_CONF_DESC(en, "Enable limited ARB_fragment_shader support on 915/945.")
  78       DRI_CONF_OPT_END
  79
  80    DRI_CONF_SECTION_END
  81    DRI_CONF_SECTION_QUALITY
  82       DRI_CONF_FORCE_S3TC_ENABLE(false)
  83       DRI_CONF_ALLOW_LARGE_TEXTURES(2)
  84    DRI_CONF_SECTION_END
  85    DRI_CONF_SECTION_DEBUG
  86      DRI_CONF_NO_RAST(false)
  87      DRI_CONF_ALWAYS_FLUSH_BATCH(false)
  88      DRI_CONF_ALWAYS_FLUSH_CACHE(false)
  89
  90       DRI_CONF_OPT_BEGIN(stub_occlusion_query, bool, false)
  91          DRI_CONF_DESC(en, "Enable stub ARB_occlusion_query support on 915/945.")
  92       DRI_CONF_OPT_END
  93    DRI_CONF_SECTION_END
  94 DRI_CONF_END;
  95
  96 const GLuint __driNConfigOptions = 11;
  97
  98 #ifdef USE_NEW_INTERFACE
  99 static PFNGLXCREATECONTEXTMODES create_context_modes = NULL;
 100 #endif /*USE_NEW_INTERFACE */
 101
 102 static const __DRItexOffsetExtension intelTexOffsetExtension = {
 103    { __DRI_TEX_OFFSET },
 104    intelSetTexOffset,
 105 };
 106
 107 static const __DRItexBufferExtension intelTexBufferExtension = {
 108     { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
 109    intelSetTexBuffer,
 110    intelSetTexBuffer2,
 111 };
 112
 113 static void
 114 intelDRI2Flush(__DRIdrawable *drawable)
 115 {
 116    struct intel_context *intel = drawable->driContextPriv->driverPrivate;
 117
 118    if (intel->gen < 4)
 119       INTEL_FIREVERTICES(intel);
 120
 121    if (intel->batch->map != intel->batch->ptr)
 122       intel_batchbuffer_flush(intel->batch);
 123 }
 124
 125 static void
 126 intelDRI2FlushInvalidate(__DRIdrawable *drawable)
 127 {
 128    struct intel_context *intel = drawable->driContextPriv->driverPrivate;
 129
 130    intel->using_dri2_swapbuffers = GL_TRUE;
 131
 132    intelDRI2Flush(drawable);
 133    drawable->validBuffers = GL_FALSE;
 134
 135    intel_update_renderbuffers(intel->driContext, drawable);
 136 }
 137
 138 static const struct __DRI2flushExtensionRec intelFlushExtension = {
 139     { __DRI2_FLUSH, __DRI2_FLUSH_VERSION },
 140     intelDRI2Flush,
 141     intelDRI2FlushInvalidate,
 142 };
 143
 144 static const __DRIextension *intelScreenExtensions[] = {
 145     &driReadDrawableExtension,
 146     &intelTexOffsetExtension.base,
 147     &intelTexBufferExtension.base,
 148     &intelFlushExtension.base,
 149     NULL
 150 };
 151
 152 static GLboolean
 153 intel_get_param(__DRIscreen *psp, int param, int *value)
 154 {
 155    int ret;
 156    struct drm_i915_getparam gp;
 157
 158    gp.param = param;
 159    gp.value = value;
 160
 161    ret = drmCommandWriteRead(psp->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
 162    if (ret) {
 163       _mesa_warning(NULL, "drm_i915_getparam: %d", ret);
 164       return GL_FALSE;
 165    }
 166
 167    return GL_TRUE;
 168 }
 169
 170 static void
 171 nop_callback(GLuint key, void *data, void *userData)
 172 {
 173 }
 174
 175 static void
 176 intelDestroyScreen(__DRIscreen * sPriv)
 177 {
 178    struct intel_screen *intelScreen = sPriv->private;
 179
 180    dri_bufmgr_destroy(intelScreen->bufmgr);
 181    driDestroyOptionInfo(&intelScreen->optionCache);
 182
 183    /* Some regions may still have references to them at this point, so
 184     * flush the hash table to prevent _mesa_DeleteHashTable() from
 185     * complaining about the hash not being empty; */
 186    _mesa_HashDeleteAll(intelScreen->named_regions, nop_callback, NULL);
 187    _mesa_DeleteHashTable(intelScreen->named_regions);
 188
 189    FREE(intelScreen);
 190    sPriv->private = NULL;
 191 }
 192
 193
 194 /**
 195  * This is called when we need to set up GL rendering to a new X window.
 196  */
 197 static GLboolean
 198 intelCreateBuffer(__DRIscreen * driScrnPriv,
 199                   __DRIdrawable * driDrawPriv,
 200                   const __GLcontextModes * mesaVis, GLboolean isPixmap)
 201 {
 202    struct intel_renderbuffer *rb;
 203
 204    if (isPixmap) {
 205       return GL_FALSE;          /* not implemented */
 206    }
 207    else {
 208       GLboolean swStencil = (mesaVis->stencilBits > 0 &&
 209                              mesaVis->depthBits != 24);
 210       gl_format rgbFormat;
 211
 212       struct gl_framebuffer *fb = CALLOC_STRUCT(gl_framebuffer);
 213
 214       if (!fb)
 215          return GL_FALSE;
 216
 217       _mesa_initialize_window_framebuffer(fb, mesaVis);
 218
 219       if (mesaVis->redBits == 5)
 220          rgbFormat = MESA_FORMAT_RGB565;
 221       else if (mesaVis->alphaBits == 0)
 222          rgbFormat = MESA_FORMAT_XRGB8888;
 223       else
 224          rgbFormat = MESA_FORMAT_ARGB8888;
 225
 226       /* setup the hardware-based renderbuffers */
 227       rb = intel_create_renderbuffer(rgbFormat);
 228       _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &rb->Base);
 229
 230       if (mesaVis->doubleBufferMode) {
 231          rb = intel_create_renderbuffer(rgbFormat);
 232          _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &rb->Base);
 233       }
 234
 235       if (mesaVis->depthBits == 24) {
 236          if (mesaVis->stencilBits == 8) {
 237             /* combined depth/stencil buffer */
 238             struct intel_renderbuffer *depthStencilRb
 239                = intel_create_renderbuffer(MESA_FORMAT_S8_Z24);
 240             /* note: bind RB to two attachment points */
 241             _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthStencilRb->Base);
 242             _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &depthStencilRb->Base);
 243          } else {
 244             struct intel_renderbuffer *depthRb
 245                = intel_create_renderbuffer(MESA_FORMAT_X8_Z24);
 246             _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
 247          }
 248       }
 249       else if (mesaVis->depthBits == 16) {
 250          /* just 16-bit depth buffer, no hw stencil */
 251          struct intel_renderbuffer *depthRb
 252             = intel_create_renderbuffer(MESA_FORMAT_Z16);
 253          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
 254       }
 255
 256       /* now add any/all software-based renderbuffers we may need */
 257       _mesa_add_soft_renderbuffers(fb,
 258                                    GL_FALSE, /* never sw color */
 259                                    GL_FALSE, /* never sw depth */
 260                                    swStencil, mesaVis->accumRedBits > 0,
 261                                    GL_FALSE, /* never sw alpha */
 262                                    GL_FALSE  /* never sw aux */ );
 263       driDrawPriv->driverPrivate = fb;
 264
 265       return GL_TRUE;
 266    }
 267 }
 268
 269 static void
 270 intelDestroyBuffer(__DRIdrawable * driDrawPriv)
 271 {
 272     struct gl_framebuffer *fb = driDrawPriv->driverPrivate;
 273
 274     _mesa_reference_framebuffer(&fb, NULL);
 275 }
 276
 277 /* There are probably better ways to do this, such as an
 278  * init-designated function to register chipids and createcontext
 279  * functions.
 280  */
 281 extern GLboolean i830CreateContext(const __GLcontextModes * mesaVis,
 282                                    __DRIcontext * driContextPriv,
 283                                    void *sharedContextPrivate);
 284
 285 extern GLboolean i915CreateContext(const __GLcontextModes * mesaVis,
 286                                    __DRIcontext * driContextPriv,
 287                                    void *sharedContextPrivate);
 288 extern GLboolean brwCreateContext(const __GLcontextModes * mesaVis,
 289                                   __DRIcontext * driContextPriv,
 290                                   void *sharedContextPrivate);
 291
 292 static GLboolean
 293 intelCreateContext(const __GLcontextModes * mesaVis,
 294                    __DRIcontext * driContextPriv,
 295                    void *sharedContextPrivate)
 296 {
 297    __DRIscreen *sPriv = driContextPriv->driScreenPriv;
 298    struct intel_screen *intelScreen = sPriv->private;
 299
 300 #ifdef I915
 301    if (IS_9XX(intelScreen->deviceID)) {
 302       if (!IS_965(intelScreen->deviceID)) {
 303          return i915CreateContext(mesaVis, driContextPriv,
 304                                   sharedContextPrivate);
 305       }
 306    } else {
 307       intelScreen->no_vbo = GL_TRUE;
 308       return i830CreateContext(mesaVis, driContextPriv, sharedContextPrivate);
 309    }
 310 #else
 311    if (IS_965(intelScreen->deviceID))
 312       return brwCreateContext(mesaVis, driContextPriv, sharedContextPrivate);
 313 #endif
 314    fprintf(stderr, "Unrecognized deviceID %x\n", intelScreen->deviceID);
 315    return GL_FALSE;
 316 }
 317
 318 static GLboolean
 319 intel_init_bufmgr(struct intel_screen *intelScreen)
 320 {
 321    __DRIscreen *spriv = intelScreen->driScrnPriv;
 322    int num_fences = 0;
 323
 324    intelScreen->no_hw = getenv("INTEL_NO_HW") != NULL;
 325
 326    intelScreen->bufmgr = intel_bufmgr_gem_init(spriv->fd, BATCH_SZ);
 327    /* Otherwise, use the classic buffer manager. */
 328    if (intelScreen->bufmgr == NULL) {
 329       fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
 330               __func__, __LINE__);
 331       return GL_FALSE;
 332    }
 333
 334    if (intel_get_param(spriv, I915_PARAM_NUM_FENCES_AVAIL, &num_fences))
 335       intelScreen->kernel_exec_fencing = !!num_fences;
 336    else
 337       intelScreen->kernel_exec_fencing = GL_FALSE;
 338
 339    intelScreen->named_regions = _mesa_NewHashTable();
 340
 341    return GL_TRUE;
 342 }
 343
 344 /**
 345  * This is the driver specific part of the createNewScreen entry point.
 346  * Called when using DRI2.
 347  *
 348  * \return the __GLcontextModes supported by this driver
 349  */
 350 static const
 351 __DRIconfig **intelInitScreen2(__DRIscreen *psp)
 352 {
 353    struct intel_screen *intelScreen;
 354    GLenum fb_format[3];
 355    GLenum fb_type[3];
 356
 357    static const GLenum back_buffer_modes[] = {
 358        GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
 359    };
 360    uint8_t depth_bits[4], stencil_bits[4], msaa_samples_array[1];
 361    int color;
 362    __DRIconfig **configs = NULL;
 363
 364    /* Allocate the private area */
 365    intelScreen = CALLOC(sizeof *intelScreen);
 366    if (!intelScreen) {
 367       fprintf(stderr, "\nERROR!  Allocating private area failed\n");
 368       return GL_FALSE;
 369    }
 370    /* parse information in __driConfigOptions */
 371    driParseOptionInfo(&intelScreen->optionCache,
 372                       __driConfigOptions, __driNConfigOptions);
 373
 374    intelScreen->driScrnPriv = psp;
 375    psp->private = (void *) intelScreen;
 376
 377    /* Determine chipset ID */
 378    if (!intel_get_param(psp, I915_PARAM_CHIPSET_ID,
 379                         &intelScreen->deviceID))
 380       return GL_FALSE;
 381
 382    if (!intel_init_bufmgr(intelScreen))
 383        return GL_FALSE;
 384
 385    psp->extensions = intelScreenExtensions;
 386
 387    msaa_samples_array[0] = 0;
 388
 389    fb_format[0] = GL_RGB;
 390    fb_type[0] = GL_UNSIGNED_SHORT_5_6_5;
 391
 392    fb_format[1] = GL_BGR;
 393    fb_type[1] = GL_UNSIGNED_INT_8_8_8_8_REV;
 394
 395    fb_format[2] = GL_BGRA;
 396    fb_type[2] = GL_UNSIGNED_INT_8_8_8_8_REV;
 397
 398    depth_bits[0] = 0;
 399    stencil_bits[0] = 0;
 400
 401    /* Generate a rich set of useful configs that do not include an
 402     * accumulation buffer.
 403     */
 404    for (color = 0; color < ARRAY_SIZE(fb_format); color++) {
 405       __DRIconfig **new_configs;
 406       int depth_factor;
 407
 408       /* Starting with DRI2 protocol version 1.1 we can request a depth/stencil
 409        * buffer that has a diffferent number of bits per pixel than the color
 410        * buffer.  This isn't yet supported here.
 411        */
 412       if (fb_type[color] == GL_UNSIGNED_SHORT_5_6_5) {
 413          depth_bits[1] = 16;
 414          stencil_bits[1] = 0;
 415       } else {
 416          depth_bits[1] = 24;
 417          stencil_bits[1] = 8;
 418       }
 419
 420       depth_factor = 2;
 421
 422       new_configs = driCreateConfigs(fb_format[color], fb_type[color],
 423                                      depth_bits,
 424                                      stencil_bits,
 425                                      depth_factor,
 426                                      back_buffer_modes,
 427                                      ARRAY_SIZE(back_buffer_modes),
 428                                      msaa_samples_array,
 429                                      ARRAY_SIZE(msaa_samples_array),
 430                                      GL_FALSE);
 431       if (configs == NULL)
 432          configs = new_configs;
 433       else
 434          configs = driConcatConfigs(configs, new_configs);
 435    }
 436
 437    /* Generate the minimum possible set of configs that include an
 438     * accumulation buffer.
 439     */
 440    for (color = 0; color < ARRAY_SIZE(fb_format); color++) {
 441       __DRIconfig **new_configs;
 442
 443       if (fb_type[color] == GL_UNSIGNED_SHORT_5_6_5) {
 444          depth_bits[0] = 16;
 445          stencil_bits[0] = 0;
 446       } else {
 447          depth_bits[0] = 24;
 448          stencil_bits[0] = 8;
 449       }
 450
 451       new_configs = driCreateConfigs(fb_format[color], fb_type[color],
 452                                      depth_bits, stencil_bits, 1,
 453                                      back_buffer_modes + 1, 1,
 454                                      msaa_samples_array, 1,
 455                                      GL_TRUE);
 456       if (configs == NULL)
 457          configs = new_configs;
 458       else
 459          configs = driConcatConfigs(configs, new_configs);
 460    }
 461
 462    if (configs == NULL) {
 463       fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
 464               __LINE__);
 465       return NULL;
 466    }
 467
 468    return (const __DRIconfig **)configs;
 469 }
 470
 471 const struct __DriverAPIRec driDriverAPI = {
 472    .DestroyScreen        = intelDestroyScreen,
 473    .CreateContext        = intelCreateContext,
 474    .DestroyContext       = intelDestroyContext,
 475    .CreateBuffer         = intelCreateBuffer,
 476    .DestroyBuffer        = intelDestroyBuffer,
 477    .MakeCurrent          = intelMakeCurrent,
 478    .UnbindContext        = intelUnbindContext,
 479    .InitScreen2          = intelInitScreen2,
 480 };
 481
 482 /* This is the table of extensions that the loader will dlsym() for. */
 483 PUBLIC const __DRIextension *__driDriverExtensions[] = {
 484     &driCoreExtension.base,
 485     &driDRI2Extension.base,
 486     NULL
 487 };