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