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 void
 117 intelDRI2Flush(__DRIdrawable *drawable)
 118 {
 119    struct intel_context *intel = drawable->driContextPriv->driverPrivate;
 120
 121    if (intel->gen < 4)
 122       INTEL_FIREVERTICES(intel);
 123
 124    if (intel->batch->map != intel->batch->ptr)
 125       intel_batchbuffer_flush(intel->batch);
 126 }
 127
 128 static void
 129 intelDRI2FlushInvalidate(__DRIdrawable *drawable)
 130 {
 131    struct intel_context *intel = drawable->driContextPriv->driverPrivate;
 132
 133    intelDRI2Flush(drawable);
 134    drawable->validBuffers = GL_FALSE;
 135
 136    /* We're using FlushInvalidate as an indicator that a frame is
 137     * done.  It's only called immediately after SwapBuffers, so it
 138     * won't affect front-buffer rendering or applications explicitly
 139     * managing swap regions using MESA_copy_buffer.
 140     *
 141     * Wait for the swapbuffers before the one we just emitted, so we don't
 142     * get too many swaps outstanding for apps that are GPU-heavy but not
 143     * CPU-heavy.
 144     *
 145     * Unfortunately, we don't have a handle to the batch containing the swap,
 146     * and getting our hands on that doesn't seem worth it, so we just use the
 147     * first batch we emitted after the last swap.
 148     */
 149    if (intel->first_post_swapbuffers_batch != NULL) {
 150       drm_intel_bo_wait_rendering(intel->first_post_swapbuffers_batch);
 151       drm_intel_bo_unreference(intel->first_post_swapbuffers_batch);
 152       intel->first_post_swapbuffers_batch = NULL;
 153    }
 154 }
 155
 156 static const struct __DRI2flushExtensionRec intelFlushExtension = {
 157     { __DRI2_FLUSH, __DRI2_FLUSH_VERSION },
 158     intelDRI2Flush,
 159     intelDRI2FlushInvalidate,
 160 };
 161
 162 static const __DRIextension *intelScreenExtensions[] = {
 163     &driReadDrawableExtension,
 164     &intelTexOffsetExtension.base,
 165     &intelTexBufferExtension.base,
 166     &intelFlushExtension.base,
 167     NULL
 168 };
 169
 170 static GLboolean
 171 intel_get_param(__DRIscreen *psp, int param, int *value)
 172 {
 173    int ret;
 174    struct drm_i915_getparam gp;
 175
 176    gp.param = param;
 177    gp.value = value;
 178
 179    ret = drmCommandWriteRead(psp->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
 180    if (ret) {
 181       _mesa_warning(NULL, "drm_i915_getparam: %d", ret);
 182       return GL_FALSE;
 183    }
 184
 185    return GL_TRUE;
 186 }
 187
 188 static void
 189 intelDestroyScreen(__DRIscreen * sPriv)
 190 {
 191    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 192
 193    dri_bufmgr_destroy(intelScreen->bufmgr);
 194    driDestroyOptionInfo(&intelScreen->optionCache);
 195
 196    FREE(intelScreen);
 197    sPriv->private = NULL;
 198 }
 199
 200
 201 /**
 202  * This is called when we need to set up GL rendering to a new X window.
 203  */
 204 static GLboolean
 205 intelCreateBuffer(__DRIscreen * driScrnPriv,
 206                   __DRIdrawable * driDrawPriv,
 207                   const __GLcontextModes * mesaVis, GLboolean isPixmap)
 208 {
 209    struct intel_renderbuffer *rb;
 210
 211    if (isPixmap) {
 212       return GL_FALSE;          /* not implemented */
 213    }
 214    else {
 215       GLboolean swStencil = (mesaVis->stencilBits > 0 &&
 216                              mesaVis->depthBits != 24);
 217       gl_format rgbFormat;
 218
 219       struct gl_framebuffer *fb = CALLOC_STRUCT(gl_framebuffer);
 220
 221       if (!fb)
 222          return GL_FALSE;
 223
 224       _mesa_initialize_framebuffer(fb, mesaVis);
 225
 226       if (mesaVis->redBits == 5)
 227          rgbFormat = MESA_FORMAT_RGB565;
 228       else if (mesaVis->alphaBits == 0)
 229          rgbFormat = MESA_FORMAT_XRGB8888;
 230       else
 231          rgbFormat = MESA_FORMAT_ARGB8888;
 232
 233       /* setup the hardware-based renderbuffers */
 234       rb = intel_create_renderbuffer(rgbFormat);
 235       _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &rb->Base);
 236
 237       if (mesaVis->doubleBufferMode) {
 238          rb = intel_create_renderbuffer(rgbFormat);
 239          _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &rb->Base);
 240       }
 241
 242       if (mesaVis->depthBits == 24) {
 243          if (mesaVis->stencilBits == 8) {
 244             /* combined depth/stencil buffer */
 245             struct intel_renderbuffer *depthStencilRb
 246                = intel_create_renderbuffer(MESA_FORMAT_S8_Z24);
 247             /* note: bind RB to two attachment points */
 248             _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthStencilRb->Base);
 249             _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &depthStencilRb->Base);
 250          } else {
 251             struct intel_renderbuffer *depthRb
 252                = intel_create_renderbuffer(MESA_FORMAT_X8_Z24);
 253             _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
 254          }
 255       }
 256       else if (mesaVis->depthBits == 16) {
 257          /* just 16-bit depth buffer, no hw stencil */
 258          struct intel_renderbuffer *depthRb
 259             = intel_create_renderbuffer(MESA_FORMAT_Z16);
 260          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
 261       }
 262
 263       /* now add any/all software-based renderbuffers we may need */
 264       _mesa_add_soft_renderbuffers(fb,
 265                                    GL_FALSE, /* never sw color */
 266                                    GL_FALSE, /* never sw depth */
 267                                    swStencil, mesaVis->accumRedBits > 0,
 268                                    GL_FALSE, /* never sw alpha */
 269                                    GL_FALSE  /* never sw aux */ );
 270       driDrawPriv->driverPrivate = fb;
 271
 272       return GL_TRUE;
 273    }
 274 }
 275
 276 static void
 277 intelDestroyBuffer(__DRIdrawable * driDrawPriv)
 278 {
 279     struct gl_framebuffer *fb = driDrawPriv->driverPrivate;
 280
 281     _mesa_reference_framebuffer(&fb, NULL);
 282 }
 283
 284 /* There are probably better ways to do this, such as an
 285  * init-designated function to register chipids and createcontext
 286  * functions.
 287  */
 288 extern GLboolean i830CreateContext(const __GLcontextModes * mesaVis,
 289                                    __DRIcontext * driContextPriv,
 290                                    void *sharedContextPrivate);
 291
 292 extern GLboolean i915CreateContext(const __GLcontextModes * mesaVis,
 293                                    __DRIcontext * driContextPriv,
 294                                    void *sharedContextPrivate);
 295 extern GLboolean brwCreateContext(const __GLcontextModes * mesaVis,
 296                                   __DRIcontext * driContextPriv,
 297                                   void *sharedContextPrivate);
 298
 299 static GLboolean
 300 intelCreateContext(const __GLcontextModes * mesaVis,
 301                    __DRIcontext * driContextPriv,
 302                    void *sharedContextPrivate)
 303 {
 304    __DRIscreen *sPriv = driContextPriv->driScreenPriv;
 305    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 306
 307 #ifdef I915
 308    if (IS_9XX(intelScreen->deviceID)) {
 309       if (!IS_965(intelScreen->deviceID)) {
 310          return i915CreateContext(mesaVis, driContextPriv,
 311                                   sharedContextPrivate);
 312       }
 313    } else {
 314       intelScreen->no_vbo = GL_TRUE;
 315       return i830CreateContext(mesaVis, driContextPriv, sharedContextPrivate);
 316    }
 317 #else
 318    if (IS_965(intelScreen->deviceID))
 319       return brwCreateContext(mesaVis, driContextPriv, sharedContextPrivate);
 320 #endif
 321    fprintf(stderr, "Unrecognized deviceID %x\n", intelScreen->deviceID);
 322    return GL_FALSE;
 323 }
 324
 325 static GLboolean
 326 intel_init_bufmgr(intelScreenPrivate *intelScreen)
 327 {
 328    __DRIscreen *spriv = intelScreen->driScrnPriv;
 329    int num_fences = 0;
 330
 331    intelScreen->no_hw = getenv("INTEL_NO_HW") != NULL;
 332
 333    intelScreen->bufmgr = intel_bufmgr_gem_init(spriv->fd, BATCH_SZ);
 334    /* Otherwise, use the classic buffer manager. */
 335    if (intelScreen->bufmgr == NULL) {
 336       fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
 337               __func__, __LINE__);
 338       return GL_FALSE;
 339    }
 340
 341    if (intel_get_param(spriv, I915_PARAM_NUM_FENCES_AVAIL, &num_fences))
 342       intelScreen->kernel_exec_fencing = !!num_fences;
 343    else
 344       intelScreen->kernel_exec_fencing = GL_FALSE;
 345
 346    return GL_TRUE;
 347 }
 348
 349 /**
 350  * This is the driver specific part of the createNewScreen entry point.
 351  * Called when using DRI2.
 352  *
 353  * \return the __GLcontextModes supported by this driver
 354  */
 355 static const
 356 __DRIconfig **intelInitScreen2(__DRIscreen *psp)
 357 {
 358    intelScreenPrivate *intelScreen;
 359    GLenum fb_format[3];
 360    GLenum fb_type[3];
 361
 362    static const GLenum back_buffer_modes[] = {
 363        GLX_NONE, GLX_SWAP_UNDEFINED_OML,
 364        GLX_SWAP_EXCHANGE_OML, GLX_SWAP_COPY_OML
 365    };
 366    uint8_t depth_bits[4], stencil_bits[4], msaa_samples_array[1];
 367    int color;
 368    __DRIconfig **configs = NULL;
 369
 370    /* Allocate the private area */
 371    intelScreen = (intelScreenPrivate *) CALLOC(sizeof(intelScreenPrivate));
 372    if (!intelScreen) {
 373       fprintf(stderr, "\nERROR!  Allocating private area failed\n");
 374       return GL_FALSE;
 375    }
 376    /* parse information in __driConfigOptions */
 377    driParseOptionInfo(&intelScreen->optionCache,
 378                       __driConfigOptions, __driNConfigOptions);
 379
 380    intelScreen->driScrnPriv = psp;
 381    psp->private = (void *) intelScreen;
 382
 383    intelScreen->drmMinor = psp->drm_version.minor;
 384
 385    /* Determine chipset ID */
 386    if (!intel_get_param(psp, I915_PARAM_CHIPSET_ID,
 387                         &intelScreen->deviceID))
 388       return GL_FALSE;
 389
 390    if (!intel_init_bufmgr(intelScreen))
 391        return GL_FALSE;
 392
 393    intelScreen->irq_active = 1;
 394    psp->extensions = intelScreenExtensions;
 395
 396    depth_bits[0] = 0;
 397    stencil_bits[0] = 0;
 398    depth_bits[1] = 16;
 399    stencil_bits[1] = 0;
 400    depth_bits[2] = 24;
 401    stencil_bits[2] = 0;
 402    depth_bits[3] = 24;
 403    stencil_bits[3] = 8;
 404
 405    msaa_samples_array[0] = 0;
 406
 407    fb_format[0] = GL_RGB;
 408    fb_type[0] = GL_UNSIGNED_SHORT_5_6_5;
 409
 410    fb_format[1] = GL_BGR;
 411    fb_type[1] = GL_UNSIGNED_INT_8_8_8_8_REV;
 412
 413    fb_format[2] = GL_BGRA;
 414    fb_type[2] = GL_UNSIGNED_INT_8_8_8_8_REV;
 415
 416    depth_bits[0] = 0;
 417    stencil_bits[0] = 0;
 418
 419    for (color = 0; color < ARRAY_SIZE(fb_format); color++) {
 420       __DRIconfig **new_configs;
 421       int depth_factor;
 422
 423       /* With DRI2 right now, GetBuffers always returns a depth/stencil buffer
 424        * with the same cpp as the drawable.  So we can't support depth cpp !=
 425        * color cpp currently.
 426        */
 427       if (fb_type[color] == GL_UNSIGNED_SHORT_5_6_5) {
 428          depth_bits[1] = 16;
 429          stencil_bits[1] = 0;
 430
 431          depth_factor = 2;
 432       } else {
 433          depth_bits[1] = 24;
 434          stencil_bits[1] = 0;
 435          depth_bits[2] = 24;
 436          stencil_bits[2] = 8;
 437
 438          depth_factor = 3;
 439       }
 440       new_configs = driCreateConfigs(fb_format[color], fb_type[color],
 441                                      depth_bits,
 442                                      stencil_bits,
 443                                      depth_factor,
 444                                      back_buffer_modes,
 445                                      ARRAY_SIZE(back_buffer_modes),
 446                                      msaa_samples_array,
 447                                      ARRAY_SIZE(msaa_samples_array));
 448       if (configs == NULL)
 449          configs = new_configs;
 450       else
 451          configs = driConcatConfigs(configs, new_configs);
 452    }
 453
 454    if (configs == NULL) {
 455       fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
 456               __LINE__);
 457       return NULL;
 458    }
 459
 460    return (const __DRIconfig **)configs;
 461 }
 462
 463 const struct __DriverAPIRec driDriverAPI = {
 464    .DestroyScreen        = intelDestroyScreen,
 465    .CreateContext        = intelCreateContext,
 466    .DestroyContext       = intelDestroyContext,
 467    .CreateBuffer         = intelCreateBuffer,
 468    .DestroyBuffer        = intelDestroyBuffer,
 469    .MakeCurrent          = intelMakeCurrent,
 470    .UnbindContext        = intelUnbindContext,
 471    .InitScreen2          = intelInitScreen2,
 472 };
 473
 474 /* This is the table of extensions that the loader will dlsym() for. */
 475 PUBLIC const __DRIextension *__driDriverExtensions[] = {
 476     &driCoreExtension.base,
 477     &driDRI2Extension.base,
 478     NULL
 479 };