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 intelDRI2Invalidate(__DRIdrawable *drawable)
 127 {
 128    struct intel_context *intel = drawable->driContextPriv->driverPrivate;
 129
 130    intel->using_dri2_swapbuffers = GL_TRUE;
 131    dri2InvalidateDrawable(drawable);
 132    intel_update_renderbuffers(intel->driContext, drawable);
 133 }
 134
 135 static const struct __DRI2flushExtensionRec intelFlushExtension = {
 136     { __DRI2_FLUSH, __DRI2_FLUSH_VERSION },
 137     intelDRI2Flush,
 138     intelDRI2Invalidate,
 139 };
 140
 141 static const __DRIextension *intelScreenExtensions[] = {
 142     &driReadDrawableExtension,
 143     &intelTexOffsetExtension.base,
 144     &intelTexBufferExtension.base,
 145     &intelFlushExtension.base,
 146     NULL
 147 };
 148
 149 static GLboolean
 150 intel_get_param(__DRIscreen *psp, int param, int *value)
 151 {
 152    int ret;
 153    struct drm_i915_getparam gp;
 154
 155    gp.param = param;
 156    gp.value = value;
 157
 158    ret = drmCommandWriteRead(psp->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
 159    if (ret) {
 160       _mesa_warning(NULL, "drm_i915_getparam: %d", ret);
 161       return GL_FALSE;
 162    }
 163
 164    return GL_TRUE;
 165 }
 166
 167 static void
 168 nop_callback(GLuint key, void *data, void *userData)
 169 {
 170 }
 171
 172 static void
 173 intelDestroyScreen(__DRIscreen * sPriv)
 174 {
 175    struct intel_screen *intelScreen = sPriv->private;
 176
 177    dri_bufmgr_destroy(intelScreen->bufmgr);
 178    driDestroyOptionInfo(&intelScreen->optionCache);
 179
 180    /* Some regions may still have references to them at this point, so
 181     * flush the hash table to prevent _mesa_DeleteHashTable() from
 182     * complaining about the hash not being empty; */
 183    _mesa_HashDeleteAll(intelScreen->named_regions, nop_callback, NULL);
 184    _mesa_DeleteHashTable(intelScreen->named_regions);
 185
 186    FREE(intelScreen);
 187    sPriv->private = NULL;
 188 }
 189
 190
 191 /**
 192  * This is called when we need to set up GL rendering to a new X window.
 193  */
 194 static GLboolean
 195 intelCreateBuffer(__DRIscreen * driScrnPriv,
 196                   __DRIdrawable * driDrawPriv,
 197                   const __GLcontextModes * mesaVis, GLboolean isPixmap)
 198 {
 199    struct intel_renderbuffer *rb;
 200
 201    if (isPixmap) {
 202       return GL_FALSE;          /* not implemented */
 203    }
 204    else {
 205       GLboolean swStencil = (mesaVis->stencilBits > 0 &&
 206                              mesaVis->depthBits != 24);
 207       gl_format rgbFormat;
 208
 209       struct gl_framebuffer *fb = CALLOC_STRUCT(gl_framebuffer);
 210
 211       if (!fb)
 212          return GL_FALSE;
 213
 214       _mesa_initialize_window_framebuffer(fb, mesaVis);
 215
 216       if (mesaVis->redBits == 5)
 217          rgbFormat = MESA_FORMAT_RGB565;
 218       else if (mesaVis->alphaBits == 0)
 219          rgbFormat = MESA_FORMAT_XRGB8888;
 220       else
 221          rgbFormat = MESA_FORMAT_ARGB8888;
 222
 223       /* setup the hardware-based renderbuffers */
 224       rb = intel_create_renderbuffer(rgbFormat);
 225       _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &rb->Base);
 226
 227       if (mesaVis->doubleBufferMode) {
 228          rb = intel_create_renderbuffer(rgbFormat);
 229          _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &rb->Base);
 230       }
 231
 232       if (mesaVis->depthBits == 24) {
 233          if (mesaVis->stencilBits == 8) {
 234             /* combined depth/stencil buffer */
 235             struct intel_renderbuffer *depthStencilRb
 236                = intel_create_renderbuffer(MESA_FORMAT_S8_Z24);
 237             /* note: bind RB to two attachment points */
 238             _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthStencilRb->Base);
 239             _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &depthStencilRb->Base);
 240          } else {
 241             struct intel_renderbuffer *depthRb
 242                = intel_create_renderbuffer(MESA_FORMAT_X8_Z24);
 243             _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
 244          }
 245       }
 246       else if (mesaVis->depthBits == 16) {
 247          /* just 16-bit depth buffer, no hw stencil */
 248          struct intel_renderbuffer *depthRb
 249             = intel_create_renderbuffer(MESA_FORMAT_Z16);
 250          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
 251       }
 252
 253       /* now add any/all software-based renderbuffers we may need */
 254       _mesa_add_soft_renderbuffers(fb,
 255                                    GL_FALSE, /* never sw color */
 256                                    GL_FALSE, /* never sw depth */
 257                                    swStencil, mesaVis->accumRedBits > 0,
 258                                    GL_FALSE, /* never sw alpha */
 259                                    GL_FALSE  /* never sw aux */ );
 260       driDrawPriv->driverPrivate = fb;
 261
 262       return GL_TRUE;
 263    }
 264 }
 265
 266 static void
 267 intelDestroyBuffer(__DRIdrawable * driDrawPriv)
 268 {
 269     struct gl_framebuffer *fb = driDrawPriv->driverPrivate;
 270
 271     _mesa_reference_framebuffer(&fb, NULL);
 272 }
 273
 274 /* There are probably better ways to do this, such as an
 275  * init-designated function to register chipids and createcontext
 276  * functions.
 277  */
 278 extern GLboolean i830CreateContext(const __GLcontextModes * mesaVis,
 279                                    __DRIcontext * driContextPriv,
 280                                    void *sharedContextPrivate);
 281
 282 extern GLboolean i915CreateContext(const __GLcontextModes * mesaVis,
 283                                    __DRIcontext * driContextPriv,
 284                                    void *sharedContextPrivate);
 285 extern GLboolean brwCreateContext(const __GLcontextModes * mesaVis,
 286                                   __DRIcontext * driContextPriv,
 287                                   void *sharedContextPrivate);
 288
 289 static GLboolean
 290 intelCreateContext(const __GLcontextModes * mesaVis,
 291                    __DRIcontext * driContextPriv,
 292                    void *sharedContextPrivate)
 293 {
 294    __DRIscreen *sPriv = driContextPriv->driScreenPriv;
 295    struct intel_screen *intelScreen = sPriv->private;
 296
 297 #ifdef I915
 298    if (IS_9XX(intelScreen->deviceID)) {
 299       if (!IS_965(intelScreen->deviceID)) {
 300          return i915CreateContext(mesaVis, driContextPriv,
 301                                   sharedContextPrivate);
 302       }
 303    } else {
 304       intelScreen->no_vbo = GL_TRUE;
 305       return i830CreateContext(mesaVis, driContextPriv, sharedContextPrivate);
 306    }
 307 #else
 308    if (IS_965(intelScreen->deviceID))
 309       return brwCreateContext(mesaVis, driContextPriv, sharedContextPrivate);
 310 #endif
 311    fprintf(stderr, "Unrecognized deviceID %x\n", intelScreen->deviceID);
 312    return GL_FALSE;
 313 }
 314
 315 static GLboolean
 316 intel_init_bufmgr(struct intel_screen *intelScreen)
 317 {
 318    __DRIscreen *spriv = intelScreen->driScrnPriv;
 319    int num_fences = 0;
 320
 321    intelScreen->no_hw = getenv("INTEL_NO_HW") != NULL;
 322
 323    intelScreen->bufmgr = intel_bufmgr_gem_init(spriv->fd, BATCH_SZ);
 324    /* Otherwise, use the classic buffer manager. */
 325    if (intelScreen->bufmgr == NULL) {
 326       fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
 327               __func__, __LINE__);
 328       return GL_FALSE;
 329    }
 330
 331    if (intel_get_param(spriv, I915_PARAM_NUM_FENCES_AVAIL, &num_fences))
 332       intelScreen->kernel_exec_fencing = !!num_fences;
 333    else
 334       intelScreen->kernel_exec_fencing = GL_FALSE;
 335
 336    intelScreen->named_regions = _mesa_NewHashTable();
 337
 338    return GL_TRUE;
 339 }
 340
 341 /**
 342  * This is the driver specific part of the createNewScreen entry point.
 343  * Called when using DRI2.
 344  *
 345  * \return the __GLcontextModes supported by this driver
 346  */
 347 static const
 348 __DRIconfig **intelInitScreen2(__DRIscreen *psp)
 349 {
 350    struct intel_screen *intelScreen;
 351    GLenum fb_format[3];
 352    GLenum fb_type[3];
 353
 354    static const GLenum back_buffer_modes[] = {
 355        GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
 356    };
 357    uint8_t depth_bits[4], stencil_bits[4], msaa_samples_array[1];
 358    int color;
 359    __DRIconfig **configs = NULL;
 360
 361    /* Allocate the private area */
 362    intelScreen = CALLOC(sizeof *intelScreen);
 363    if (!intelScreen) {
 364       fprintf(stderr, "\nERROR!  Allocating private area failed\n");
 365       return GL_FALSE;
 366    }
 367    /* parse information in __driConfigOptions */
 368    driParseOptionInfo(&intelScreen->optionCache,
 369                       __driConfigOptions, __driNConfigOptions);
 370
 371    intelScreen->driScrnPriv = psp;
 372    psp->private = (void *) intelScreen;
 373
 374    /* Determine chipset ID */
 375    if (!intel_get_param(psp, I915_PARAM_CHIPSET_ID,
 376                         &intelScreen->deviceID))
 377       return GL_FALSE;
 378
 379    if (!intel_init_bufmgr(intelScreen))
 380        return GL_FALSE;
 381
 382    psp->extensions = intelScreenExtensions;
 383
 384    msaa_samples_array[0] = 0;
 385
 386    fb_format[0] = GL_RGB;
 387    fb_type[0] = GL_UNSIGNED_SHORT_5_6_5;
 388
 389    fb_format[1] = GL_BGR;
 390    fb_type[1] = GL_UNSIGNED_INT_8_8_8_8_REV;
 391
 392    fb_format[2] = GL_BGRA;
 393    fb_type[2] = GL_UNSIGNED_INT_8_8_8_8_REV;
 394
 395    depth_bits[0] = 0;
 396    stencil_bits[0] = 0;
 397
 398    /* Generate a rich set of useful configs that do not include an
 399     * accumulation buffer.
 400     */
 401    for (color = 0; color < ARRAY_SIZE(fb_format); color++) {
 402       __DRIconfig **new_configs;
 403       int depth_factor;
 404
 405       /* Starting with DRI2 protocol version 1.1 we can request a depth/stencil
 406        * buffer that has a diffferent number of bits per pixel than the color
 407        * buffer.  This isn't yet supported here.
 408        */
 409       if (fb_type[color] == GL_UNSIGNED_SHORT_5_6_5) {
 410          depth_bits[1] = 16;
 411          stencil_bits[1] = 0;
 412       } else {
 413          depth_bits[1] = 24;
 414          stencil_bits[1] = 8;
 415       }
 416
 417       depth_factor = 2;
 418
 419       new_configs = driCreateConfigs(fb_format[color], fb_type[color],
 420                                      depth_bits,
 421                                      stencil_bits,
 422                                      depth_factor,
 423                                      back_buffer_modes,
 424                                      ARRAY_SIZE(back_buffer_modes),
 425                                      msaa_samples_array,
 426                                      ARRAY_SIZE(msaa_samples_array),
 427                                      GL_FALSE);
 428       if (configs == NULL)
 429          configs = new_configs;
 430       else
 431          configs = driConcatConfigs(configs, new_configs);
 432    }
 433
 434    /* Generate the minimum possible set of configs that include an
 435     * accumulation buffer.
 436     */
 437    for (color = 0; color < ARRAY_SIZE(fb_format); color++) {
 438       __DRIconfig **new_configs;
 439
 440       if (fb_type[color] == GL_UNSIGNED_SHORT_5_6_5) {
 441          depth_bits[0] = 16;
 442          stencil_bits[0] = 0;
 443       } else {
 444          depth_bits[0] = 24;
 445          stencil_bits[0] = 8;
 446       }
 447
 448       new_configs = driCreateConfigs(fb_format[color], fb_type[color],
 449                                      depth_bits, stencil_bits, 1,
 450                                      back_buffer_modes + 1, 1,
 451                                      msaa_samples_array, 1,
 452                                      GL_TRUE);
 453       if (configs == NULL)
 454          configs = new_configs;
 455       else
 456          configs = driConcatConfigs(configs, new_configs);
 457    }
 458
 459    if (configs == NULL) {
 460       fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
 461               __LINE__);
 462       return NULL;
 463    }
 464
 465    return (const __DRIconfig **)configs;
 466 }
 467
 468 const struct __DriverAPIRec driDriverAPI = {
 469    .DestroyScreen        = intelDestroyScreen,
 470    .CreateContext        = intelCreateContext,
 471    .DestroyContext       = intelDestroyContext,
 472    .CreateBuffer         = intelCreateBuffer,
 473    .DestroyBuffer        = intelDestroyBuffer,
 474    .MakeCurrent          = intelMakeCurrent,
 475    .UnbindContext        = intelUnbindContext,
 476    .InitScreen2          = intelInitScreen2,
 477 };
 478
 479 /* This is the table of extensions that the loader will dlsym() for. */
 480 PUBLIC const __DRIextension *__driDriverExtensions[] = {
 481     &driCoreExtension.base,
 482     &driDRI2Extension.base,
 483     NULL
 484 };