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