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