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