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