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(struct dri_screen *screen,
  73                   unsigned pixel_bits)
  74 {
  75    __DRIconfig **configs;
  76    unsigned num_modes;
  77    uint8_t depth_bits_array[4];
  78    uint8_t stencil_bits_array[4];
  79    uint8_t msaa_samples_array[1];
  80    unsigned depth_buffer_factor;
  81    unsigned back_buffer_factor;
  82    unsigned msaa_samples_factor;
  83    GLenum fb_format;
  84    GLenum fb_type;
  85    struct pipe_screen *p_screen = screen->pipe_screen;
  86
  87    static const GLenum back_buffer_modes[] = {
  88       GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
  89    };
  90
  91    depth_bits_array[0] = 0;
  92    stencil_bits_array[0] = 0;
  93    depth_buffer_factor = 1;
  94
  95    if (p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z16_UNORM,
  96                                      PIPE_TEXTURE_2D,
  97                                      PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0)) {
  98       depth_bits_array[depth_buffer_factor] = 16;
  99       stencil_bits_array[depth_buffer_factor++] = 0;
 100    }
 101    if (p_screen->is_format_supported(p_screen, PIPE_FORMAT_X8Z24_UNORM,
 102                                      PIPE_TEXTURE_2D,
 103                                      PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0)) {
 104       depth_bits_array[depth_buffer_factor] = 24;
 105       stencil_bits_array[depth_buffer_factor++] = 0;
 106       screen->d_depth_bits_last = TRUE;
 107    } else if (p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24X8_UNORM,
 108                                             PIPE_TEXTURE_2D,
 109                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL,
 110                                             0)) {
 111       depth_bits_array[depth_buffer_factor] = 24;
 112       stencil_bits_array[depth_buffer_factor++] = 0;
 113       screen->d_depth_bits_last = FALSE;
 114    }
 115    if (p_screen->is_format_supported(p_screen, PIPE_FORMAT_S8Z24_UNORM,
 116                                      PIPE_TEXTURE_2D,
 117                                      PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0)) {
 118       depth_bits_array[depth_buffer_factor] = 24;
 119       stencil_bits_array[depth_buffer_factor++] = 8;
 120       screen->sd_depth_bits_last = TRUE;
 121    } else if (p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24S8_UNORM,
 122                                             PIPE_TEXTURE_2D,
 123                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL,
 124                                             0)) {
 125       depth_bits_array[depth_buffer_factor] = 24;
 126       stencil_bits_array[depth_buffer_factor++] = 8;
 127       screen->sd_depth_bits_last = FALSE;
 128    }
 129
 130    msaa_samples_array[0] = 0;
 131    back_buffer_factor = 3;
 132    msaa_samples_factor = 1;
 133
 134    num_modes =
 135       depth_buffer_factor * back_buffer_factor * msaa_samples_factor * 4;
 136
 137    if (pixel_bits == 16) {
 138       if (!p_screen->is_format_supported(p_screen,
 139                                          PIPE_FORMAT_R5G6B5_UNORM,
 140                                          PIPE_TEXTURE_2D,
 141                                          PIPE_TEXTURE_USAGE_RENDER_TARGET, 0))
 142          return NULL;
 143       fb_format = GL_RGB;
 144       fb_type = GL_UNSIGNED_SHORT_5_6_5;
 145    } else {
 146       if (!p_screen->is_format_supported(p_screen,
 147                                          PIPE_FORMAT_A8R8G8B8_UNORM,
 148                                          PIPE_TEXTURE_2D,
 149                                          PIPE_TEXTURE_USAGE_RENDER_TARGET, 0))
 150          return NULL;
 151       fb_format = GL_BGRA;
 152       fb_type = GL_UNSIGNED_INT_8_8_8_8_REV;
 153    }
 154
 155    configs = driCreateConfigs(fb_format, fb_type,
 156                               depth_bits_array,
 157                               stencil_bits_array, depth_buffer_factor,
 158                               back_buffer_modes, back_buffer_factor,
 159                               msaa_samples_array, msaa_samples_factor);
 160    if (configs == NULL) {
 161       debug_printf("%s: driCreateConfigs failed\n", __FUNCTION__);
 162       return NULL;
 163    }
 164
 165    return (const const __DRIconfig **)configs;
 166 }
 167
 168 /**
 169  * Get information about previous buffer swaps.
 170  */
 171 static int
 172 dri_get_swap_info(__DRIdrawablePrivate * dPriv, __DRIswapInfo * sInfo)
 173 {
 174    if (dPriv == NULL || dPriv->driverPrivate == NULL || sInfo == NULL)
 175       return -1;
 176    else
 177       return 0;
 178 }
 179
 180 static INLINE void
 181 dri_copy_version(struct dri1_api_version *dst,
 182                  const struct __DRIversionRec *src)
 183 {
 184    dst->major = src->major;
 185    dst->minor = src->minor;
 186    dst->patch_level = src->patch;
 187 }
 188
 189 static const __DRIconfig **
 190 dri_init_screen(__DRIscreenPrivate * sPriv)
 191 {
 192    struct dri_screen *screen;
 193    const __DRIconfig **configs;
 194    struct dri1_create_screen_arg arg;
 195
 196    dri_init_extensions(NULL);
 197
 198    screen = CALLOC_STRUCT(dri_screen);
 199    if (!screen)
 200       return NULL;
 201
 202    screen->api = drm_api_create();
 203    screen->sPriv = sPriv;
 204    screen->fd = sPriv->fd;
 205    screen->drmLock = (drmLock *) & sPriv->pSAREA->lock;
 206
 207    sPriv->private = (void *)screen;
 208    sPriv->extensions = dri_screen_extensions;
 209
 210    arg.base.mode = DRM_CREATE_DRI1;
 211    arg.lf = &dri1_lf;
 212    arg.ddx_info = sPriv->pDevPriv;
 213    arg.ddx_info_size = sPriv->devPrivSize;
 214    arg.sarea = sPriv->pSAREA;
 215    dri_copy_version(&arg.ddx_version, &sPriv->ddx_version);
 216    dri_copy_version(&arg.dri_version, &sPriv->dri_version);
 217    dri_copy_version(&arg.drm_version, &sPriv->drm_version);
 218    arg.api = NULL;
 219
 220    screen->pipe_screen = screen->api->create_screen(screen->api, screen->fd, &arg.base);
 221
 222    if (!screen->pipe_screen || !arg.api) {
 223       debug_printf("%s: failed to create dri1 screen\n", __FUNCTION__);
 224       goto out_no_screen;
 225    }
 226
 227    __dri1_api_hooks = arg.api;
 228
 229    screen->pipe_screen->flush_frontbuffer = dri1_flush_frontbuffer;
 230    driParseOptionInfo(&screen->optionCache,
 231                       __driConfigOptions, __driNConfigOptions);
 232
 233    /**
 234     * FIXME: If the driver supports format conversion swapbuffer blits, we might
 235     * want to support other color bit depths than the server is currently
 236     * using.
 237     */
 238
 239    configs = dri_fill_in_modes(screen, sPriv->fbBPP);
 240    if (!configs)
 241       goto out_no_configs;
 242
 243    return configs;
 244  out_no_configs:
 245    screen->pipe_screen->destroy(screen->pipe_screen);
 246  out_no_screen:
 247    FREE(screen);
 248    return NULL;
 249 }
 250
 251 /**
 252  * This is the driver specific part of the createNewScreen entry point.
 253  *
 254  * Returns the __GLcontextModes supported by this driver.
 255  */
 256 static const __DRIconfig **
 257 dri_init_screen2(__DRIscreenPrivate * sPriv)
 258 {
 259    struct dri_screen *screen;
 260    struct drm_create_screen_arg arg;
 261
 262    /* Set up dispatch table to cope with all known extensions */
 263    dri_init_extensions(NULL);
 264
 265    screen = CALLOC_STRUCT(dri_screen);
 266    if (!screen)
 267       goto fail;
 268
 269    screen->api = drm_api_create();
 270    screen->sPriv = sPriv;
 271    screen->fd = sPriv->fd;
 272    sPriv->private = (void *)screen;
 273    sPriv->extensions = dri_screen_extensions;
 274    arg.mode = DRM_CREATE_NORMAL;
 275
 276    screen->pipe_screen = screen->api->create_screen(screen->api, screen->fd, &arg);
 277    if (!screen->pipe_screen) {
 278       debug_printf("%s: failed to create pipe_screen\n", __FUNCTION__);
 279       goto fail;
 280    }
 281
 282    /* We need to hook in here */
 283    screen->pipe_screen->flush_frontbuffer = dri_flush_frontbuffer;
 284
 285    driParseOptionInfo(&screen->optionCache,
 286                       __driConfigOptions, __driNConfigOptions);
 287
 288    return dri_fill_in_modes(screen, 32);
 289  fail:
 290    return NULL;
 291 }
 292
 293 static void
 294 dri_destroy_screen(__DRIscreenPrivate * sPriv)
 295 {
 296    struct dri_screen *screen = dri_screen(sPriv);
 297
 298    screen->pipe_screen->destroy(screen->pipe_screen);
 299    FREE(screen);
 300    sPriv->private = NULL;
 301 }
 302
 303 PUBLIC const struct __DriverAPIRec driDriverAPI = {
 304    .InitScreen = dri_init_screen,
 305    .DestroyScreen = dri_destroy_screen,
 306    .CreateContext = dri_create_context,
 307    .DestroyContext = dri_destroy_context,
 308    .CreateBuffer = dri_create_buffer,
 309    .DestroyBuffer = dri_destroy_buffer,
 310    .SwapBuffers = dri_swap_buffers,
 311    .MakeCurrent = dri_make_current,
 312    .UnbindContext = dri_unbind_context,
 313    .GetSwapInfo = dri_get_swap_info,
 314    .GetDrawableMSC = driDrawableGetMSC32,
 315    .WaitForMSC = driWaitForMSC32,
 316    .CopySubBuffer = dri_copy_sub_buffer,
 317    .InitScreen = dri_init_screen,
 318    .InitScreen2 = dri_init_screen2,
 319 };
 320
 321 /* vim: set sw=3 ts=8 sts=3 expandtab: */