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
  33 #include "utils.h"
  34 #include "xmlpool.h"
  35
  36 #include "intel_batchbuffer.h"
  37 #include "intel_buffers.h"
  38 #include "intel_bufmgr.h"
  39 #include "intel_chipset.h"
  40 #include "intel_extensions.h"
  41 #include "intel_fbo.h"
  42 #include "intel_regions.h"
  43 #include "intel_screen.h"
  44 #include "intel_span.h"
  45 #include "intel_tex.h"
  46
  47 #include "i915_drm.h"
  48 #include "i830_dri.h"
  49
  50 #define DRI_CONF_TEXTURE_TILING(def) \
  51         DRI_CONF_OPT_BEGIN(texture_tiling, bool, def)           \
  52                 DRI_CONF_DESC(en, "Enable texture tiling")      \
  53         DRI_CONF_OPT_END                                        \
  54
  55 PUBLIC const char __driConfigOptions[] =
  56    DRI_CONF_BEGIN
  57    DRI_CONF_SECTION_PERFORMANCE
  58       DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_ALWAYS_SYNC)
  59       /* Options correspond to DRI_CONF_BO_REUSE_DISABLED,
  60        * DRI_CONF_BO_REUSE_ALL
  61        */
  62       DRI_CONF_OPT_BEGIN_V(bo_reuse, enum, 1, "0:1")
  63          DRI_CONF_DESC_BEGIN(en, "Buffer object reuse")
  64             DRI_CONF_ENUM(0, "Disable buffer object reuse")
  65             DRI_CONF_ENUM(1, "Enable reuse of all sizes of buffer objects")
  66          DRI_CONF_DESC_END
  67       DRI_CONF_OPT_END
  68
  69 #ifdef I915
  70      DRI_CONF_TEXTURE_TILING(false)
  71 #else
  72      DRI_CONF_TEXTURE_TILING(true)
  73 #endif
  74
  75       DRI_CONF_OPT_BEGIN(early_z, bool, false)
  76          DRI_CONF_DESC(en, "Enable early Z in classic mode (unstable, 945-only).")
  77       DRI_CONF_OPT_END
  78
  79       DRI_CONF_OPT_BEGIN(fragment_shader, bool, false)
  80          DRI_CONF_DESC(en, "Enable limited ARB_fragment_shader support on 915/945.")
  81       DRI_CONF_OPT_END
  82
  83    DRI_CONF_SECTION_END
  84    DRI_CONF_SECTION_QUALITY
  85       DRI_CONF_FORCE_S3TC_ENABLE(false)
  86       DRI_CONF_ALLOW_LARGE_TEXTURES(2)
  87    DRI_CONF_SECTION_END
  88    DRI_CONF_SECTION_DEBUG
  89      DRI_CONF_NO_RAST(false)
  90      DRI_CONF_ALWAYS_FLUSH_BATCH(false)
  91      DRI_CONF_ALWAYS_FLUSH_CACHE(false)
  92
  93       DRI_CONF_OPT_BEGIN(stub_occlusion_query, bool, false)
  94          DRI_CONF_DESC(en, "Enable stub ARB_occlusion_query support on 915/945.")
  95       DRI_CONF_OPT_END
  96    DRI_CONF_SECTION_END
  97 DRI_CONF_END;
  98
  99 const GLuint __driNConfigOptions = 11;
 100
 101 #ifdef USE_NEW_INTERFACE
 102 static PFNGLXCREATECONTEXTMODES create_context_modes = NULL;
 103 #endif /*USE_NEW_INTERFACE */
 104
 105 static const __DRItexOffsetExtension intelTexOffsetExtension = {
 106    { __DRI_TEX_OFFSET },
 107    intelSetTexOffset,
 108 };
 109
 110 static const __DRItexBufferExtension intelTexBufferExtension = {
 111     { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
 112    intelSetTexBuffer,
 113    intelSetTexBuffer2,
 114 };
 115
 116 static const __DRIextension *intelScreenExtensions[] = {
 117     &driReadDrawableExtension,
 118     &intelTexOffsetExtension.base,
 119     &intelTexBufferExtension.base,
 120     NULL
 121 };
 122
 123 static GLboolean
 124 intel_get_param(__DRIscreen *psp, int param, int *value)
 125 {
 126    int ret;
 127    struct drm_i915_getparam gp;
 128
 129    gp.param = param;
 130    gp.value = value;
 131
 132    ret = drmCommandWriteRead(psp->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
 133    if (ret) {
 134       _mesa_warning(NULL, "drm_i915_getparam: %d", ret);
 135       return GL_FALSE;
 136    }
 137
 138    return GL_TRUE;
 139 }
 140
 141 static void
 142 intelDestroyScreen(__DRIscreen * sPriv)
 143 {
 144    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 145
 146    dri_bufmgr_destroy(intelScreen->bufmgr);
 147    driDestroyOptionInfo(&intelScreen->optionCache);
 148
 149    FREE(intelScreen);
 150    sPriv->private = NULL;
 151 }
 152
 153
 154 /**
 155  * This is called when we need to set up GL rendering to a new X window.
 156  */
 157 static GLboolean
 158 intelCreateBuffer(__DRIscreen * driScrnPriv,
 159                   __DRIdrawable * driDrawPriv,
 160                   const __GLcontextModes * mesaVis, GLboolean isPixmap)
 161 {
 162    if (isPixmap) {
 163       return GL_FALSE;          /* not implemented */
 164    }
 165    else {
 166       GLboolean swStencil = (mesaVis->stencilBits > 0 &&
 167                              mesaVis->depthBits != 24);
 168       gl_format rgbFormat;
 169
 170       struct intel_framebuffer *intel_fb = CALLOC_STRUCT(intel_framebuffer);
 171
 172       if (!intel_fb)
 173          return GL_FALSE;
 174
 175       _mesa_initialize_framebuffer(&intel_fb->Base, mesaVis);
 176
 177       if (mesaVis->redBits == 5)
 178          rgbFormat = MESA_FORMAT_RGB565;
 179       else if (mesaVis->alphaBits == 0)
 180          rgbFormat = MESA_FORMAT_XRGB8888;
 181       else
 182          rgbFormat = MESA_FORMAT_ARGB8888;
 183
 184       /* setup the hardware-based renderbuffers */
 185       intel_fb->color_rb[0] = intel_create_renderbuffer(rgbFormat);
 186       _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_FRONT_LEFT,
 187                              &intel_fb->color_rb[0]->Base);
 188
 189       if (mesaVis->doubleBufferMode) {
 190          intel_fb->color_rb[1] = intel_create_renderbuffer(rgbFormat);
 191
 192          _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_BACK_LEFT,
 193                                 &intel_fb->color_rb[1]->Base);
 194
 195       }
 196
 197       if (mesaVis->depthBits == 24) {
 198          if (mesaVis->stencilBits == 8) {
 199             /* combined depth/stencil buffer */
 200             struct intel_renderbuffer *depthStencilRb
 201                = intel_create_renderbuffer(MESA_FORMAT_S8_Z24);
 202             /* note: bind RB to two attachment points */
 203             _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_DEPTH,
 204                                    &depthStencilRb->Base);
 205             _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_STENCIL,
 206                                    &depthStencilRb->Base);
 207          } else {
 208             struct intel_renderbuffer *depthRb
 209                = intel_create_renderbuffer(MESA_FORMAT_X8_Z24);
 210             _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_DEPTH,
 211                                    &depthRb->Base);
 212          }
 213       }
 214       else if (mesaVis->depthBits == 16) {
 215          /* just 16-bit depth buffer, no hw stencil */
 216          struct intel_renderbuffer *depthRb
 217             = intel_create_renderbuffer(MESA_FORMAT_Z16);
 218          _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_DEPTH, &depthRb->Base);
 219       }
 220
 221       /* now add any/all software-based renderbuffers we may need */
 222       _mesa_add_soft_renderbuffers(&intel_fb->Base,
 223                                    GL_FALSE, /* never sw color */
 224                                    GL_FALSE, /* never sw depth */
 225                                    swStencil, mesaVis->accumRedBits > 0,
 226                                    GL_FALSE, /* never sw alpha */
 227                                    GL_FALSE  /* never sw aux */ );
 228       driDrawPriv->driverPrivate = (void *) intel_fb;
 229
 230       return GL_TRUE;
 231    }
 232 }
 233
 234 static void
 235 intelDestroyBuffer(__DRIdrawable * driDrawPriv)
 236 {
 237    struct intel_framebuffer *intel_fb = driDrawPriv->driverPrivate;
 238    struct intel_renderbuffer *depth_rb;
 239    struct intel_renderbuffer *stencil_rb;
 240
 241    if (intel_fb) {
 242       if (intel_fb->color_rb[0]) {
 243          intel_renderbuffer_set_region(intel_fb->color_rb[0], NULL);
 244       }
 245
 246       if (intel_fb->color_rb[1]) {
 247          intel_renderbuffer_set_region(intel_fb->color_rb[1], NULL);
 248       }
 249
 250       depth_rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 251       if (depth_rb) {
 252          intel_renderbuffer_set_region(depth_rb, NULL);
 253       }
 254
 255       stencil_rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 256       if (stencil_rb) {
 257          intel_renderbuffer_set_region(stencil_rb, NULL);
 258       }
 259    }
 260
 261    _mesa_reference_framebuffer((GLframebuffer **)(&(driDrawPriv->driverPrivate)), NULL);
 262 }
 263
 264 /* There are probably better ways to do this, such as an
 265  * init-designated function to register chipids and createcontext
 266  * functions.
 267  */
 268 extern GLboolean i830CreateContext(const __GLcontextModes * mesaVis,
 269                                    __DRIcontext * driContextPriv,
 270                                    void *sharedContextPrivate);
 271
 272 extern GLboolean i915CreateContext(const __GLcontextModes * mesaVis,
 273                                    __DRIcontext * driContextPriv,
 274                                    void *sharedContextPrivate);
 275 extern GLboolean brwCreateContext(const __GLcontextModes * mesaVis,
 276                                   __DRIcontext * driContextPriv,
 277                                   void *sharedContextPrivate);
 278
 279 static GLboolean
 280 intelCreateContext(const __GLcontextModes * mesaVis,
 281                    __DRIcontext * driContextPriv,
 282                    void *sharedContextPrivate)
 283 {
 284    __DRIscreen *sPriv = driContextPriv->driScreenPriv;
 285    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 286
 287 #ifdef I915
 288    if (IS_9XX(intelScreen->deviceID)) {
 289       if (!IS_965(intelScreen->deviceID)) {
 290          return i915CreateContext(mesaVis, driContextPriv,
 291                                   sharedContextPrivate);
 292       }
 293    } else {
 294       intelScreen->no_vbo = GL_TRUE;
 295       return i830CreateContext(mesaVis, driContextPriv, sharedContextPrivate);
 296    }
 297 #else
 298    if (IS_965(intelScreen->deviceID))
 299       return brwCreateContext(mesaVis, driContextPriv, sharedContextPrivate);
 300 #endif
 301    fprintf(stderr, "Unrecognized deviceID %x\n", intelScreen->deviceID);
 302    return GL_FALSE;
 303 }
 304
 305 static GLboolean
 306 intel_init_bufmgr(intelScreenPrivate *intelScreen)
 307 {
 308    int gem_kernel = 0;
 309    struct drm_i915_getparam gp;
 310    __DRIscreen *spriv = intelScreen->driScrnPriv;
 311    int num_fences = 0;
 312
 313    intelScreen->no_hw = getenv("INTEL_NO_HW") != NULL;
 314
 315    gp.param = I915_PARAM_HAS_GEM;
 316    gp.value = &gem_kernel;
 317
 318    (void) drmCommandWriteRead(spriv->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
 319
 320    /* If we've got a new enough DDX that's initializing GEM and giving us
 321     * object handles for the shared buffers, use that.
 322     */
 323    if (!intelScreen->driScrnPriv->dri2.enabled &&
 324        intelScreen->driScrnPriv->ddx_version.minor < 9) {
 325       fprintf(stderr, "[%s:%u] Error initializing GEM.\n",
 326               __func__, __LINE__);
 327       return GL_FALSE;
 328    }
 329
 330    intelScreen->bufmgr = intel_bufmgr_gem_init(spriv->fd, BATCH_SZ);
 331    /* Otherwise, use the classic buffer manager. */
 332    if (intelScreen->bufmgr == NULL) {
 333       fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
 334               __func__, __LINE__);
 335       return GL_FALSE;
 336    }
 337
 338    if (intel_get_param(spriv, I915_PARAM_NUM_FENCES_AVAIL, &num_fences))
 339       intelScreen->kernel_exec_fencing = !!num_fences;
 340    else
 341       intelScreen->kernel_exec_fencing = GL_FALSE;
 342
 343    return GL_TRUE;
 344 }
 345
 346 struct intel_context *intelScreenContext(intelScreenPrivate *intelScreen)
 347 {
 348   /*
 349    * This should probably change to have the screen allocate a dummy
 350    * context at screen creation. For now just use the current context.
 351    */
 352
 353   GET_CURRENT_CONTEXT(ctx);
 354   if (ctx == NULL) {
 355      _mesa_problem(NULL, "No current context in intelScreenContext\n");
 356      return NULL;
 357   }
 358   return intel_context(ctx);
 359 }
 360
 361 /**
 362  * This is the driver specific part of the createNewScreen entry point.
 363  * Called when using DRI2.
 364  *
 365  * \return the __GLcontextModes supported by this driver
 366  */
 367 static const
 368 __DRIconfig **intelInitScreen2(__DRIscreen *psp)
 369 {
 370    intelScreenPrivate *intelScreen;
 371    GLenum fb_format[3];
 372    GLenum fb_type[3];
 373    /* GLX_SWAP_COPY_OML is only supported because the Intel driver doesn't
 374     * support pageflipping at all.
 375     */
 376    static const GLenum back_buffer_modes[] = {
 377       GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
 378    };
 379    uint8_t depth_bits[4], stencil_bits[4], msaa_samples_array[1];
 380    int color;
 381    __DRIconfig **configs = NULL;
 382
 383    /* Allocate the private area */
 384    intelScreen = (intelScreenPrivate *) CALLOC(sizeof(intelScreenPrivate));
 385    if (!intelScreen) {
 386       fprintf(stderr, "\nERROR!  Allocating private area failed\n");
 387       return GL_FALSE;
 388    }
 389    /* parse information in __driConfigOptions */
 390    driParseOptionInfo(&intelScreen->optionCache,
 391                       __driConfigOptions, __driNConfigOptions);
 392
 393    intelScreen->driScrnPriv = psp;
 394    psp->private = (void *) intelScreen;
 395
 396    intelScreen->drmMinor = psp->drm_version.minor;
 397
 398    /* Determine chipset ID */
 399    if (!intel_get_param(psp, I915_PARAM_CHIPSET_ID,
 400                         &intelScreen->deviceID))
 401       return GL_FALSE;
 402
 403    if (!intel_init_bufmgr(intelScreen))
 404        return GL_FALSE;
 405
 406    intelScreen->irq_active = 1;
 407    psp->extensions = intelScreenExtensions;
 408
 409    depth_bits[0] = 0;
 410    stencil_bits[0] = 0;
 411    depth_bits[1] = 16;
 412    stencil_bits[1] = 0;
 413    depth_bits[2] = 24;
 414    stencil_bits[2] = 0;
 415    depth_bits[3] = 24;
 416    stencil_bits[3] = 8;
 417
 418    msaa_samples_array[0] = 0;
 419
 420    fb_format[0] = GL_RGB;
 421    fb_type[0] = GL_UNSIGNED_SHORT_5_6_5;
 422
 423    fb_format[1] = GL_BGR;
 424    fb_type[1] = GL_UNSIGNED_INT_8_8_8_8_REV;
 425
 426    fb_format[2] = GL_BGRA;
 427    fb_type[2] = GL_UNSIGNED_INT_8_8_8_8_REV;
 428
 429    depth_bits[0] = 0;
 430    stencil_bits[0] = 0;
 431
 432    for (color = 0; color < ARRAY_SIZE(fb_format); color++) {
 433       __DRIconfig **new_configs;
 434       int depth_factor;
 435
 436       /* With DRI2 right now, GetBuffers always returns a depth/stencil buffer
 437        * with the same cpp as the drawable.  So we can't support depth cpp !=
 438        * color cpp currently.
 439        */
 440       if (fb_type[color] == GL_UNSIGNED_SHORT_5_6_5) {
 441          depth_bits[1] = 16;
 442          stencil_bits[1] = 0;
 443
 444          depth_factor = 2;
 445       } else {
 446          depth_bits[1] = 24;
 447          stencil_bits[1] = 0;
 448          depth_bits[2] = 24;
 449          stencil_bits[2] = 8;
 450
 451          depth_factor = 3;
 452       }
 453       new_configs = driCreateConfigs(fb_format[color], fb_type[color],
 454                                      depth_bits,
 455                                      stencil_bits,
 456                                      depth_factor,
 457                                      back_buffer_modes,
 458                                      ARRAY_SIZE(back_buffer_modes),
 459                                      msaa_samples_array,
 460                                      ARRAY_SIZE(msaa_samples_array));
 461       if (configs == NULL)
 462          configs = new_configs;
 463       else
 464          configs = driConcatConfigs(configs, new_configs);
 465    }
 466
 467    if (configs == NULL) {
 468       fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
 469               __LINE__);
 470       return NULL;
 471    }
 472
 473    return (const __DRIconfig **)configs;
 474 }
 475
 476 const struct __DriverAPIRec driDriverAPI = {
 477    .DestroyScreen        = intelDestroyScreen,
 478    .CreateContext        = intelCreateContext,
 479    .DestroyContext       = intelDestroyContext,
 480    .CreateBuffer         = intelCreateBuffer,
 481    .DestroyBuffer        = intelDestroyBuffer,
 482    .MakeCurrent          = intelMakeCurrent,
 483    .UnbindContext        = intelUnbindContext,
 484    .InitScreen2          = intelInitScreen2,
 485 };
 486
 487 /* This is the table of extensions that the loader will dlsym() for. */
 488 PUBLIC const __DRIextension *__driDriverExtensions[] = {
 489     &driCoreExtension.base,
 490     &driDRI2Extension.base,
 491     NULL
 492 };