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_regions.h"
  42 #include "intel_screen.h"
  43 #include "intel_tex.h"
  44
  45 #include "i915_drm.h"
  46 #include "i830_dri.h"
  47
  48 #define DRI_CONF_TEXTURE_TILING(def) \
  49         DRI_CONF_OPT_BEGIN(texture_tiling, bool, def)           \
  50                 DRI_CONF_DESC(en, "Enable texture tiling")      \
  51         DRI_CONF_OPT_END                                        \
  52
  53 PUBLIC const char __driConfigOptions[] =
  54    DRI_CONF_BEGIN
  55    DRI_CONF_SECTION_PERFORMANCE
  56       DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_ALWAYS_SYNC)
  57       /* Options correspond to DRI_CONF_BO_REUSE_DISABLED,
  58        * DRI_CONF_BO_REUSE_ALL
  59        */
  60       DRI_CONF_OPT_BEGIN_V(bo_reuse, enum, 1, "0:1")
  61          DRI_CONF_DESC_BEGIN(en, "Buffer object reuse")
  62             DRI_CONF_ENUM(0, "Disable buffer object reuse")
  63             DRI_CONF_ENUM(1, "Enable reuse of all sizes of buffer objects")
  64          DRI_CONF_DESC_END
  65       DRI_CONF_OPT_END
  66
  67 #ifdef I915
  68      DRI_CONF_TEXTURE_TILING(false)
  69 #else
  70      DRI_CONF_TEXTURE_TILING(true)
  71 #endif
  72
  73       DRI_CONF_OPT_BEGIN(early_z, bool, false)
  74          DRI_CONF_DESC(en, "Enable early Z in classic mode (unstable, 945-only).")
  75       DRI_CONF_OPT_END
  76
  77       DRI_CONF_OPT_BEGIN(fragment_shader, bool, false)
  78          DRI_CONF_DESC(en, "Enable limited ARB_fragment_shader support on 915/945.")
  79       DRI_CONF_OPT_END
  80
  81    DRI_CONF_SECTION_END
  82    DRI_CONF_SECTION_QUALITY
  83       DRI_CONF_FORCE_S3TC_ENABLE(false)
  84       DRI_CONF_ALLOW_LARGE_TEXTURES(2)
  85    DRI_CONF_SECTION_END
  86    DRI_CONF_SECTION_DEBUG
  87      DRI_CONF_NO_RAST(false)
  88      DRI_CONF_ALWAYS_FLUSH_BATCH(false)
  89      DRI_CONF_ALWAYS_FLUSH_CACHE(false)
  90
  91       DRI_CONF_OPT_BEGIN(stub_occlusion_query, bool, false)
  92          DRI_CONF_DESC(en, "Enable stub ARB_occlusion_query support on 915/945.")
  93       DRI_CONF_OPT_END
  94    DRI_CONF_SECTION_END
  95 DRI_CONF_END;
  96
  97 const GLuint __driNConfigOptions = 11;
  98
  99 #ifdef USE_NEW_INTERFACE
 100 static PFNGLXCREATECONTEXTMODES create_context_modes = NULL;
 101 #endif /*USE_NEW_INTERFACE */
 102
 103 static const __DRItexOffsetExtension intelTexOffsetExtension = {
 104    { __DRI_TEX_OFFSET },
 105    intelSetTexOffset,
 106 };
 107
 108 static const __DRItexBufferExtension intelTexBufferExtension = {
 109     { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
 110    intelSetTexBuffer,
 111    intelSetTexBuffer2,
 112 };
 113
 114 static void
 115 intelDRI2Flush(__DRIdrawable *drawable)
 116 {
 117    struct intel_context *intel = drawable->driContextPriv->driverPrivate;
 118
 119    if (intel->gen < 4)
 120       INTEL_FIREVERTICES(intel);
 121
 122    if (intel->batch->map != intel->batch->ptr)
 123       intel_batchbuffer_flush(intel->batch);
 124 }
 125
 126 static void
 127 intelDRI2FlushInvalidate(__DRIdrawable *drawable)
 128 {
 129    struct intel_context *intel = drawable->driContextPriv->driverPrivate;
 130
 131    intelDRI2Flush(drawable);
 132    drawable->validBuffers = GL_FALSE;
 133
 134    /* We're using FlushInvalidate as an indicator that a frame is
 135     * done.  It's only called immediately after SwapBuffers, so it
 136     * won't affect front-buffer rendering or applications explicitly
 137     * managing swap regions using MESA_copy_buffer.
 138     *
 139     * Wait for the swapbuffers before the one we just emitted, so we don't
 140     * get too many swaps outstanding for apps that are GPU-heavy but not
 141     * CPU-heavy.
 142     *
 143     * Unfortunately, we don't have a handle to the batch containing the swap,
 144     * and getting our hands on that doesn't seem worth it, so we just use the
 145     * first batch we emitted after the last swap.
 146     */
 147    if (intel->first_post_swapbuffers_batch != NULL) {
 148       drm_intel_bo_wait_rendering(intel->first_post_swapbuffers_batch);
 149       drm_intel_bo_unreference(intel->first_post_swapbuffers_batch);
 150       intel->first_post_swapbuffers_batch = NULL;
 151    }
 152 }
 153
 154 static const struct __DRI2flushExtensionRec intelFlushExtension = {
 155     { __DRI2_FLUSH, __DRI2_FLUSH_VERSION },
 156     intelDRI2Flush,
 157     intelDRI2FlushInvalidate,
 158 };
 159
 160 static const __DRIextension *intelScreenExtensions[] = {
 161     &driReadDrawableExtension,
 162     &intelTexOffsetExtension.base,
 163     &intelTexBufferExtension.base,
 164     &intelFlushExtension.base,
 165     NULL
 166 };
 167
 168 static GLboolean
 169 intel_get_param(__DRIscreen *psp, int param, int *value)
 170 {
 171    int ret;
 172    struct drm_i915_getparam gp;
 173
 174    gp.param = param;
 175    gp.value = value;
 176
 177    ret = drmCommandWriteRead(psp->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
 178    if (ret) {
 179       _mesa_warning(NULL, "drm_i915_getparam: %d", ret);
 180       return GL_FALSE;
 181    }
 182
 183    return GL_TRUE;
 184 }
 185
 186 static void
 187 intelDestroyScreen(__DRIscreen * sPriv)
 188 {
 189    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 190
 191    dri_bufmgr_destroy(intelScreen->bufmgr);
 192    driDestroyOptionInfo(&intelScreen->optionCache);
 193
 194    FREE(intelScreen);
 195    sPriv->private = NULL;
 196 }
 197
 198
 199 /**
 200  * This is called when we need to set up GL rendering to a new X window.
 201  */
 202 static GLboolean
 203 intelCreateBuffer(__DRIscreen * driScrnPriv,
 204                   __DRIdrawable * driDrawPriv,
 205                   const __GLcontextModes * mesaVis, GLboolean isPixmap)
 206 {
 207    struct intel_renderbuffer *rb;
 208
 209    if (isPixmap) {
 210       return GL_FALSE;          /* not implemented */
 211    }
 212    else {
 213       GLboolean swStencil = (mesaVis->stencilBits > 0 &&
 214                              mesaVis->depthBits != 24);
 215       gl_format rgbFormat;
 216
 217       struct gl_framebuffer *fb = CALLOC_STRUCT(gl_framebuffer);
 218
 219       if (!fb)
 220          return GL_FALSE;
 221
 222       _mesa_initialize_framebuffer(fb, mesaVis);
 223
 224       if (mesaVis->redBits == 5)
 225          rgbFormat = MESA_FORMAT_RGB565;
 226       else if (mesaVis->alphaBits == 0)
 227          rgbFormat = MESA_FORMAT_XRGB8888;
 228       else
 229          rgbFormat = MESA_FORMAT_ARGB8888;
 230
 231       /* setup the hardware-based renderbuffers */
 232       rb = intel_create_renderbuffer(rgbFormat);
 233       _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &rb->Base);
 234
 235       if (mesaVis->doubleBufferMode) {
 236          rb = intel_create_renderbuffer(rgbFormat);
 237          _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &rb->Base);
 238       }
 239
 240       if (mesaVis->depthBits == 24) {
 241          if (mesaVis->stencilBits == 8) {
 242             /* combined depth/stencil buffer */
 243             struct intel_renderbuffer *depthStencilRb
 244                = intel_create_renderbuffer(MESA_FORMAT_S8_Z24);
 245             /* note: bind RB to two attachment points */
 246             _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthStencilRb->Base);
 247             _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &depthStencilRb->Base);
 248          } else {
 249             struct intel_renderbuffer *depthRb
 250                = intel_create_renderbuffer(MESA_FORMAT_X8_Z24);
 251             _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
 252          }
 253       }
 254       else if (mesaVis->depthBits == 16) {
 255          /* just 16-bit depth buffer, no hw stencil */
 256          struct intel_renderbuffer *depthRb
 257             = intel_create_renderbuffer(MESA_FORMAT_Z16);
 258          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
 259       }
 260
 261       /* now add any/all software-based renderbuffers we may need */
 262       _mesa_add_soft_renderbuffers(fb,
 263                                    GL_FALSE, /* never sw color */
 264                                    GL_FALSE, /* never sw depth */
 265                                    swStencil, mesaVis->accumRedBits > 0,
 266                                    GL_FALSE, /* never sw alpha */
 267                                    GL_FALSE  /* never sw aux */ );
 268       driDrawPriv->driverPrivate = fb;
 269
 270       return GL_TRUE;
 271    }
 272 }
 273
 274 static void
 275 intelDestroyBuffer(__DRIdrawable * driDrawPriv)
 276 {
 277     struct gl_framebuffer *fb = driDrawPriv->driverPrivate;
 278
 279     _mesa_reference_framebuffer(&fb, NULL);
 280 }
 281
 282 /* There are probably better ways to do this, such as an
 283  * init-designated function to register chipids and createcontext
 284  * functions.
 285  */
 286 extern GLboolean i830CreateContext(const __GLcontextModes * mesaVis,
 287                                    __DRIcontext * driContextPriv,
 288                                    void *sharedContextPrivate);
 289
 290 extern GLboolean i915CreateContext(const __GLcontextModes * mesaVis,
 291                                    __DRIcontext * driContextPriv,
 292                                    void *sharedContextPrivate);
 293 extern GLboolean brwCreateContext(const __GLcontextModes * mesaVis,
 294                                   __DRIcontext * driContextPriv,
 295                                   void *sharedContextPrivate);
 296
 297 static GLboolean
 298 intelCreateContext(const __GLcontextModes * mesaVis,
 299                    __DRIcontext * driContextPriv,
 300                    void *sharedContextPrivate)
 301 {
 302    __DRIscreen *sPriv = driContextPriv->driScreenPriv;
 303    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 304
 305 #ifdef I915
 306    if (IS_9XX(intelScreen->deviceID)) {
 307       if (!IS_965(intelScreen->deviceID)) {
 308          return i915CreateContext(mesaVis, driContextPriv,
 309                                   sharedContextPrivate);
 310       }
 311    } else {
 312       intelScreen->no_vbo = GL_TRUE;
 313       return i830CreateContext(mesaVis, driContextPriv, sharedContextPrivate);
 314    }
 315 #else
 316    if (IS_965(intelScreen->deviceID))
 317       return brwCreateContext(mesaVis, driContextPriv, sharedContextPrivate);
 318 #endif
 319    fprintf(stderr, "Unrecognized deviceID %x\n", intelScreen->deviceID);
 320    return GL_FALSE;
 321 }
 322
 323 static GLboolean
 324 intel_init_bufmgr(intelScreenPrivate *intelScreen)
 325 {
 326    __DRIscreen *spriv = intelScreen->driScrnPriv;
 327    int num_fences = 0;
 328
 329    intelScreen->no_hw = getenv("INTEL_NO_HW") != NULL;
 330
 331    intelScreen->bufmgr = intel_bufmgr_gem_init(spriv->fd, BATCH_SZ);
 332    /* Otherwise, use the classic buffer manager. */
 333    if (intelScreen->bufmgr == NULL) {
 334       fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
 335               __func__, __LINE__);
 336       return GL_FALSE;
 337    }
 338
 339    if (intel_get_param(spriv, I915_PARAM_NUM_FENCES_AVAIL, &num_fences))
 340       intelScreen->kernel_exec_fencing = !!num_fences;
 341    else
 342       intelScreen->kernel_exec_fencing = GL_FALSE;
 343
 344    return GL_TRUE;
 345 }
 346
 347 /**
 348  * This is the driver specific part of the createNewScreen entry point.
 349  * Called when using DRI2.
 350  *
 351  * \return the __GLcontextModes supported by this driver
 352  */
 353 static const
 354 __DRIconfig **intelInitScreen2(__DRIscreen *psp)
 355 {
 356    intelScreenPrivate *intelScreen;
 357    GLenum fb_format[3];
 358    GLenum fb_type[3];
 359
 360    static const GLenum back_buffer_modes[] = {
 361        GLX_NONE, GLX_SWAP_UNDEFINED_OML,
 362        GLX_SWAP_EXCHANGE_OML, GLX_SWAP_COPY_OML
 363    };
 364    uint8_t depth_bits[4], stencil_bits[4], msaa_samples_array[1];
 365    int color;
 366    __DRIconfig **configs = NULL;
 367
 368    /* Allocate the private area */
 369    intelScreen = (intelScreenPrivate *) CALLOC(sizeof(intelScreenPrivate));
 370    if (!intelScreen) {
 371       fprintf(stderr, "\nERROR!  Allocating private area failed\n");
 372       return GL_FALSE;
 373    }
 374    /* parse information in __driConfigOptions */
 375    driParseOptionInfo(&intelScreen->optionCache,
 376                       __driConfigOptions, __driNConfigOptions);
 377
 378    intelScreen->driScrnPriv = psp;
 379    psp->private = (void *) intelScreen;
 380
 381    intelScreen->drmMinor = psp->drm_version.minor;
 382
 383    /* Determine chipset ID */
 384    if (!intel_get_param(psp, I915_PARAM_CHIPSET_ID,
 385                         &intelScreen->deviceID))
 386       return GL_FALSE;
 387
 388    if (!intel_init_bufmgr(intelScreen))
 389        return GL_FALSE;
 390
 391    intelScreen->irq_active = 1;
 392    psp->extensions = intelScreenExtensions;
 393
 394    depth_bits[0] = 0;
 395    stencil_bits[0] = 0;
 396    depth_bits[1] = 16;
 397    stencil_bits[1] = 0;
 398    depth_bits[2] = 24;
 399    stencil_bits[2] = 0;
 400    depth_bits[3] = 24;
 401    stencil_bits[3] = 8;
 402
 403    msaa_samples_array[0] = 0;
 404
 405    fb_format[0] = GL_RGB;
 406    fb_type[0] = GL_UNSIGNED_SHORT_5_6_5;
 407
 408    fb_format[1] = GL_BGR;
 409    fb_type[1] = GL_UNSIGNED_INT_8_8_8_8_REV;
 410
 411    fb_format[2] = GL_BGRA;
 412    fb_type[2] = GL_UNSIGNED_INT_8_8_8_8_REV;
 413
 414    depth_bits[0] = 0;
 415    stencil_bits[0] = 0;
 416
 417    for (color = 0; color < ARRAY_SIZE(fb_format); color++) {
 418       __DRIconfig **new_configs;
 419       int depth_factor;
 420
 421       /* With DRI2 right now, GetBuffers always returns a depth/stencil buffer
 422        * with the same cpp as the drawable.  So we can't support depth cpp !=
 423        * color cpp currently.
 424        */
 425       if (fb_type[color] == GL_UNSIGNED_SHORT_5_6_5) {
 426          depth_bits[1] = 16;
 427          stencil_bits[1] = 0;
 428
 429          depth_factor = 2;
 430       } else {
 431          depth_bits[1] = 24;
 432          stencil_bits[1] = 0;
 433          depth_bits[2] = 24;
 434          stencil_bits[2] = 8;
 435
 436          depth_factor = 3;
 437       }
 438       new_configs = driCreateConfigs(fb_format[color], fb_type[color],
 439                                      depth_bits,
 440                                      stencil_bits,
 441                                      depth_factor,
 442                                      back_buffer_modes,
 443                                      ARRAY_SIZE(back_buffer_modes),
 444                                      msaa_samples_array,
 445                                      ARRAY_SIZE(msaa_samples_array));
 446       if (configs == NULL)
 447          configs = new_configs;
 448       else
 449          configs = driConcatConfigs(configs, new_configs);
 450    }
 451
 452    if (configs == NULL) {
 453       fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
 454               __LINE__);
 455       return NULL;
 456    }
 457
 458    return (const __DRIconfig **)configs;
 459 }
 460
 461 const struct __DriverAPIRec driDriverAPI = {
 462    .DestroyScreen        = intelDestroyScreen,
 463    .CreateContext        = intelCreateContext,
 464    .DestroyContext       = intelDestroyContext,
 465    .CreateBuffer         = intelCreateBuffer,
 466    .DestroyBuffer        = intelDestroyBuffer,
 467    .MakeCurrent          = intelMakeCurrent,
 468    .UnbindContext        = intelUnbindContext,
 469    .InitScreen2          = intelInitScreen2,
 470 };
 471
 472 /* This is the table of extensions that the loader will dlsym() for. */
 473 PUBLIC const __DRIextension *__driDriverExtensions[] = {
 474     &driCoreExtension.base,
 475     &driDRI2Extension.base,
 476     NULL
 477 };