src/gallium/state_trackers/dri/dri_screen.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2009, VMware, Inc.
   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 VMWARE 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  * Author: Keith Whitwell <keithw@vmware.com>
  29  * Author: Jakob Bornecrantz <wallbraker@gmail.com>
  30  */
  31
  32 #include "utils.h"
  33 #include "vblank.h"
  34 #include "xmlpool.h"
  35
  36 #include "dri_screen.h"
  37 #include "dri_context.h"
  38 #include "dri_drawable.h"
  39
  40 #include "pipe/p_context.h"
  41 #include "pipe/p_screen.h"
  42 #include "pipe/p_inlines.h"
  43 #include "pipe/p_format.h"
  44 #include "state_tracker/drm_api.h"
  45 #include "state_tracker/dri1_api.h"
  46 #include "state_tracker/st_public.h"
  47 #include "state_tracker/st_cb_fbo.h"
  48
  49
  50 PUBLIC const char __driConfigOptions[] =
  51    DRI_CONF_BEGIN DRI_CONF_SECTION_PERFORMANCE
  52     DRI_CONF_FTHROTTLE_MODE(DRI_CONF_FTHROTTLE_IRQS)
  53     DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_DEF_INTERVAL_0)
  54    DRI_CONF_SECTION_END DRI_CONF_SECTION_QUALITY
  55     /*DRI_CONF_FORCE_S3TC_ENABLE(false)*/
  56     DRI_CONF_ALLOW_LARGE_TEXTURES(1)
  57    DRI_CONF_SECTION_END DRI_CONF_END;
  58
  59
  60 const uint __driNConfigOptions = 3;
  61
  62 static const __DRIextension *dri_screen_extensions[] = {
  63     &driReadDrawableExtension,
  64     &driCopySubBufferExtension.base,
  65     &driSwapControlExtension.base,
  66     &driFrameTrackingExtension.base,
  67     &driMediaStreamCounterExtension.base,
  68     NULL
  69 };
  70
  71 struct dri1_api *__dri1_api_hooks = NULL;
  72
  73 static const __DRIconfig **
  74 dri_fill_in_modes(__DRIscreenPrivate *psp,
  75                   unsigned pixel_bits, unsigned depth_bits,
  76                   unsigned stencil_bits, GLboolean have_back_buffer)
  77 {
  78    __DRIconfig **configs;
  79    __GLcontextModes *m;
  80    unsigned num_modes;
  81    uint8_t depth_bits_array[3];
  82    uint8_t stencil_bits_array[3];
  83    uint8_t msaa_samples_array[1];
  84    unsigned depth_buffer_factor;
  85    unsigned back_buffer_factor;
  86    unsigned msaa_samples_factor;
  87    GLenum fb_format;
  88    GLenum fb_type;
  89    int i;
  90
  91    static const GLenum back_buffer_modes[] = {
  92       GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
  93    };
  94
  95    /* TODO probe the hardware of what is supports */
  96    depth_bits_array[0] = 0;
  97    depth_bits_array[1] = 24;
  98    depth_bits_array[2] = 24;
  99
 100    stencil_bits_array[0] = 0;   /* no depth or stencil */
 101    stencil_bits_array[1] = 0;   /* z24x8 */
 102    stencil_bits_array[2] = 8;   /* z24s8 */
 103
 104    msaa_samples_array[0] = 0;
 105
 106    depth_buffer_factor = 3;
 107    back_buffer_factor = 3;
 108    msaa_samples_factor = 1;
 109
 110    num_modes = depth_buffer_factor * back_buffer_factor * msaa_samples_factor * 4;
 111
 112    if (pixel_bits == 16) {
 113       fb_format = GL_RGB;
 114       fb_type = GL_UNSIGNED_SHORT_5_6_5;
 115    }
 116    else {
 117       fb_format = GL_BGRA;
 118       fb_type = GL_UNSIGNED_INT_8_8_8_8_REV;
 119    }
 120
 121    configs = driCreateConfigs(fb_format, fb_type,
 122                               depth_bits_array,
 123                               stencil_bits_array, depth_buffer_factor,
 124                               back_buffer_modes, back_buffer_factor,
 125                               msaa_samples_array, msaa_samples_factor);
 126    if (configs == NULL) {
 127       debug_printf("%s: driCreateConfigs failed\n", __FUNCTION__);
 128       return NULL;
 129    }
 130
 131    for (i = 0; configs[i]; i++) {
 132       m = &configs[i]->modes;
 133       if ((m->stencilBits != 0) && (m->stencilBits != stencil_bits)) {
 134          m->visualRating = GLX_SLOW_CONFIG;
 135       }
 136    }
 137
 138    return (const const __DRIconfig **) configs;
 139 }
 140
 141
 142 /**
 143  * Get information about previous buffer swaps.
 144  */
 145 static int
 146 dri_get_swap_info(__DRIdrawablePrivate * dPriv,
 147                   __DRIswapInfo * sInfo)
 148 {
 149    if (dPriv == NULL ||
 150        dPriv->driverPrivate == NULL ||
 151        sInfo == NULL)
 152       return -1;
 153    else
 154       return 0;
 155 }
 156
 157 static INLINE void
 158 dri_copy_version(struct dri1_api_version *dst,
 159                  const struct __DRIversionRec *src)
 160 {
 161    dst->major = src->major;
 162    dst->minor = src->minor;
 163    dst->patch_level = src->patch;
 164 }
 165
 166 static const __DRIconfig **
 167 dri_init_screen(__DRIscreenPrivate *sPriv)
 168 {
 169     struct dri_screen *screen;
 170     const __DRIconfig **configs;
 171     struct dri1_create_screen_arg arg;
 172
 173     dri_init_extensions(NULL);
 174
 175     screen = CALLOC_STRUCT(dri_screen);
 176     if (!screen)
 177        return NULL;
 178
 179     screen->sPriv = sPriv;
 180     screen->fd = sPriv->fd;
 181     screen->drmLock = (drmLock *) &sPriv->pSAREA->lock;
 182
 183     sPriv->private = (void *) screen;
 184     sPriv->extensions = dri_screen_extensions;
 185
 186     arg.base.mode = DRM_CREATE_DRI1;
 187     arg.lf = &dri1_lf;
 188     arg.ddx_info = sPriv->pDevPriv;
 189     arg.ddx_info_size = sPriv->devPrivSize;
 190     arg.sarea = sPriv->pSAREA;
 191     dri_copy_version(&arg.ddx_version, &sPriv->ddx_version);
 192     dri_copy_version(&arg.dri_version, &sPriv->dri_version);
 193     dri_copy_version(&arg.drm_version, &sPriv->drm_version);
 194     arg.api = NULL;
 195
 196     screen->pipe_screen = drm_api_hooks.create_screen
 197       (screen->fd, &arg.base);
 198
 199    if (!screen->pipe_screen || !arg.api) {
 200       debug_printf("%s: failed to create dri1 screen\n", __FUNCTION__);
 201       goto out_no_screen;
 202    }
 203
 204    __dri1_api_hooks = arg.api;
 205
 206    screen->pipe_screen->flush_frontbuffer = dri1_flush_frontbuffer;
 207    driParseOptionInfo(&screen->optionCache,
 208                       __driConfigOptions,
 209                       __driNConfigOptions);
 210
 211    configs = dri_fill_in_modes(sPriv, sPriv->fbBPP, 24, 8, 1);
 212    if (!configs)
 213       goto out_no_configs;
 214
 215    return configs;
 216  out_no_configs:
 217    screen->pipe_screen->destroy(screen->pipe_screen);
 218  out_no_screen:
 219    FREE(screen);
 220    return NULL;
 221 }
 222
 223
 224 /**
 225  * This is the driver specific part of the createNewScreen entry point.
 226  *
 227  * Returns the __GLcontextModes supported by this driver.
 228  */
 229 static const __DRIconfig **
 230 dri_init_screen2(__DRIscreenPrivate *sPriv)
 231 {
 232    struct dri_screen *screen;
 233    struct drm_create_screen_arg arg;
 234
 235    /* Set up dispatch table to cope with all known extensions */
 236    dri_init_extensions(NULL);
 237
 238    screen = CALLOC_STRUCT(dri_screen);
 239    if (!screen)
 240       goto fail;
 241
 242    screen->sPriv = sPriv;
 243    screen->fd = sPriv->fd;
 244    sPriv->private = (void *) screen;
 245    sPriv->extensions = dri_screen_extensions;
 246    arg.mode = DRM_CREATE_NORMAL;
 247
 248    screen->pipe_screen = drm_api_hooks.create_screen(screen->fd, &arg);
 249    if (!screen->pipe_screen) {
 250       debug_printf("%s: failed to create pipe_screen\n", __FUNCTION__);
 251       goto fail;
 252    }
 253
 254    /* We need to hook in here */
 255    screen->pipe_screen->flush_frontbuffer = dri_flush_frontbuffer;
 256
 257    driParseOptionInfo(&screen->optionCache,
 258                       __driConfigOptions,
 259                       __driNConfigOptions);
 260
 261    return dri_fill_in_modes(sPriv,
 262                             4 * 8,
 263                             24,
 264                             8,
 265                             1);
 266 fail:
 267    return NULL;
 268 }
 269
 270
 271 static void
 272 dri_destroy_screen(__DRIscreenPrivate * sPriv)
 273 {
 274    struct dri_screen *screen = dri_screen(sPriv);
 275
 276    screen->pipe_screen->destroy(screen->pipe_screen);
 277    FREE(screen);
 278    sPriv->private = NULL;
 279 }
 280
 281
 282 PUBLIC const struct __DriverAPIRec driDriverAPI = {
 283    .InitScreen          = dri_init_screen,
 284    .DestroyScreen       = dri_destroy_screen,
 285    .CreateContext       = dri_create_context,
 286    .DestroyContext      = dri_destroy_context,
 287    .CreateBuffer        = dri_create_buffer,
 288    .DestroyBuffer       = dri_destroy_buffer,
 289    .SwapBuffers         = dri_swap_buffers,
 290    .MakeCurrent         = dri_make_current,
 291    .UnbindContext       = dri_unbind_context,
 292    .GetSwapInfo         = dri_get_swap_info,
 293    .GetDrawableMSC      = driDrawableGetMSC32,
 294    .WaitForMSC          = driWaitForMSC32,
 295    .CopySubBuffer       = dri_copy_sub_buffer,
 296    .InitScreen          = dri_init_screen,
 297    .InitScreen2         = dri_init_screen2,
 298 };
 299
 300 /* vim: set sw=3 ts=8 sts=3 expandtab: */