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 __DRItexBufferExtension dri2TexBufferExtension = {
  61     { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
  62    dri2_set_tex_buffer,
  63    dri2_set_tex_buffer2,
  64 };
  65
  66    static const __DRIextension *dri_screen_extensions[] = {
  67       &driReadDrawableExtension,
  68       &driCopySubBufferExtension.base,
  69       &driSwapControlExtension.base,
  70       &driFrameTrackingExtension.base,
  71       &driMediaStreamCounterExtension.base,
  72       &dri2TexBufferExtension.base,
  73       NULL
  74    };
  75
  76 struct dri1_api *__dri1_api_hooks = NULL;
  77
  78 static const __DRIconfig **
  79 dri_fill_in_modes(struct dri_screen *screen,
  80                   unsigned pixel_bits)
  81 {
  82    __DRIconfig **configs;
  83    unsigned num_modes;
  84    uint8_t depth_bits_array[4];
  85    uint8_t stencil_bits_array[4];
  86    uint8_t msaa_samples_array[1];
  87    unsigned depth_buffer_factor;
  88    unsigned back_buffer_factor;
  89    unsigned msaa_samples_factor;
  90    GLenum fb_format;
  91    GLenum fb_type;
  92    struct pipe_screen *p_screen = screen->pipe_screen;
  93
  94    static const GLenum back_buffer_modes[] = {
  95       GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
  96    };
  97
  98    depth_bits_array[0] = 0;
  99    stencil_bits_array[0] = 0;
 100    depth_buffer_factor = 1;
 101
 102    if (p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z16_UNORM,
 103                                      PIPE_TEXTURE_2D,
 104                                      PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0)) {
 105       depth_bits_array[depth_buffer_factor] = 16;
 106       stencil_bits_array[depth_buffer_factor++] = 0;
 107    }
 108    if (p_screen->is_format_supported(p_screen, PIPE_FORMAT_X8Z24_UNORM,
 109                                      PIPE_TEXTURE_2D,
 110                                      PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0)) {
 111       depth_bits_array[depth_buffer_factor] = 24;
 112       stencil_bits_array[depth_buffer_factor++] = 0;
 113       screen->d_depth_bits_last = TRUE;
 114    } else if (p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24X8_UNORM,
 115                                             PIPE_TEXTURE_2D,
 116                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL,
 117                                             0)) {
 118       depth_bits_array[depth_buffer_factor] = 24;
 119       stencil_bits_array[depth_buffer_factor++] = 0;
 120       screen->d_depth_bits_last = FALSE;
 121    }
 122    if (p_screen->is_format_supported(p_screen, PIPE_FORMAT_S8Z24_UNORM,
 123                                      PIPE_TEXTURE_2D,
 124                                      PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0)) {
 125       depth_bits_array[depth_buffer_factor] = 24;
 126       stencil_bits_array[depth_buffer_factor++] = 8;
 127       screen->sd_depth_bits_last = TRUE;
 128    } else if (p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24S8_UNORM,
 129                                             PIPE_TEXTURE_2D,
 130                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL,
 131                                             0)) {
 132       depth_bits_array[depth_buffer_factor] = 24;
 133       stencil_bits_array[depth_buffer_factor++] = 8;
 134       screen->sd_depth_bits_last = FALSE;
 135    }
 136
 137    msaa_samples_array[0] = 0;
 138    back_buffer_factor = 3;
 139    msaa_samples_factor = 1;
 140
 141    num_modes =
 142       depth_buffer_factor * back_buffer_factor * msaa_samples_factor * 4;
 143
 144    if (pixel_bits == 16) {
 145       if (!p_screen->is_format_supported(p_screen,
 146                                          PIPE_FORMAT_R5G6B5_UNORM,
 147                                          PIPE_TEXTURE_2D,
 148                                          PIPE_TEXTURE_USAGE_RENDER_TARGET, 0))
 149          return NULL;
 150       fb_format = GL_RGB;
 151       fb_type = GL_UNSIGNED_SHORT_5_6_5;
 152    } else {
 153       if (!p_screen->is_format_supported(p_screen,
 154                                          PIPE_FORMAT_A8R8G8B8_UNORM,
 155                                          PIPE_TEXTURE_2D,
 156                                          PIPE_TEXTURE_USAGE_RENDER_TARGET, 0))
 157          return NULL;
 158       fb_format = GL_BGRA;
 159       fb_type = GL_UNSIGNED_INT_8_8_8_8_REV;
 160    }
 161
 162    configs = driCreateConfigs(fb_format, fb_type,
 163                               depth_bits_array,
 164                               stencil_bits_array, depth_buffer_factor,
 165                               back_buffer_modes, back_buffer_factor,
 166                               msaa_samples_array, msaa_samples_factor);
 167    if (configs == NULL) {
 168       debug_printf("%s: driCreateConfigs failed\n", __FUNCTION__);
 169       return NULL;
 170    }
 171
 172    return (const const __DRIconfig **)configs;
 173 }
 174
 175 /**
 176  * Get information about previous buffer swaps.
 177  */
 178 static int
 179 dri_get_swap_info(__DRIdrawablePrivate * dPriv, __DRIswapInfo * sInfo)
 180 {
 181    if (dPriv == NULL || dPriv->driverPrivate == NULL || sInfo == NULL)
 182       return -1;
 183    else
 184       return 0;
 185 }
 186
 187 static INLINE void
 188 dri_copy_version(struct dri1_api_version *dst,
 189                  const struct __DRIversionRec *src)
 190 {
 191    dst->major = src->major;
 192    dst->minor = src->minor;
 193    dst->patch_level = src->patch;
 194 }
 195
 196 static const __DRIconfig **
 197 dri_init_screen(__DRIscreenPrivate * sPriv)
 198 {
 199    struct dri_screen *screen;
 200    const __DRIconfig **configs;
 201    struct dri1_create_screen_arg arg;
 202
 203    dri_init_extensions(NULL);
 204
 205    screen = CALLOC_STRUCT(dri_screen);
 206    if (!screen)
 207       return NULL;
 208
 209    screen->api = drm_api_create();
 210    screen->sPriv = sPriv;
 211    screen->fd = sPriv->fd;
 212    screen->drmLock = (drmLock *) & sPriv->pSAREA->lock;
 213
 214    sPriv->private = (void *)screen;
 215    sPriv->extensions = dri_screen_extensions;
 216
 217    arg.base.mode = DRM_CREATE_DRI1;
 218    arg.lf = &dri1_lf;
 219    arg.ddx_info = sPriv->pDevPriv;
 220    arg.ddx_info_size = sPriv->devPrivSize;
 221    arg.sarea = sPriv->pSAREA;
 222    dri_copy_version(&arg.ddx_version, &sPriv->ddx_version);
 223    dri_copy_version(&arg.dri_version, &sPriv->dri_version);
 224    dri_copy_version(&arg.drm_version, &sPriv->drm_version);
 225    arg.api = NULL;
 226
 227    screen->pipe_screen = screen->api->create_screen(screen->api, screen->fd, &arg.base);
 228
 229    if (!screen->pipe_screen || !arg.api) {
 230       debug_printf("%s: failed to create dri1 screen\n", __FUNCTION__);
 231       goto out_no_screen;
 232    }
 233
 234    __dri1_api_hooks = arg.api;
 235
 236    screen->pipe_screen->flush_frontbuffer = dri1_flush_frontbuffer;
 237    driParseOptionInfo(&screen->optionCache,
 238                       __driConfigOptions, __driNConfigOptions);
 239
 240    /**
 241     * FIXME: If the driver supports format conversion swapbuffer blits, we might
 242     * want to support other color bit depths than the server is currently
 243     * using.
 244     */
 245
 246    configs = dri_fill_in_modes(screen, sPriv->fbBPP);
 247    if (!configs)
 248       goto out_no_configs;
 249
 250    return configs;
 251  out_no_configs:
 252    screen->pipe_screen->destroy(screen->pipe_screen);
 253  out_no_screen:
 254    FREE(screen);
 255    return NULL;
 256 }
 257
 258 /**
 259  * This is the driver specific part of the createNewScreen entry point.
 260  *
 261  * Returns the __GLcontextModes supported by this driver.
 262  */
 263 static const __DRIconfig **
 264 dri_init_screen2(__DRIscreenPrivate * sPriv)
 265 {
 266    struct dri_screen *screen;
 267    struct drm_create_screen_arg arg;
 268
 269    /* Set up dispatch table to cope with all known extensions */
 270    dri_init_extensions(NULL);
 271
 272    screen = CALLOC_STRUCT(dri_screen);
 273    if (!screen)
 274       goto fail;
 275
 276    screen->api = drm_api_create();
 277    screen->sPriv = sPriv;
 278    screen->fd = sPriv->fd;
 279    sPriv->private = (void *)screen;
 280    sPriv->extensions = dri_screen_extensions;
 281    arg.mode = DRM_CREATE_NORMAL;
 282
 283    screen->pipe_screen = screen->api->create_screen(screen->api, screen->fd, &arg);
 284    if (!screen->pipe_screen) {
 285       debug_printf("%s: failed to create pipe_screen\n", __FUNCTION__);
 286       goto fail;
 287    }
 288
 289    /* We need to hook in here */
 290    screen->pipe_screen->flush_frontbuffer = dri_flush_frontbuffer;
 291
 292    driParseOptionInfo(&screen->optionCache,
 293                       __driConfigOptions, __driNConfigOptions);
 294
 295    return dri_fill_in_modes(screen, 32);
 296  fail:
 297    return NULL;
 298 }
 299
 300 static void
 301 dri_destroy_screen(__DRIscreenPrivate * sPriv)
 302 {
 303    struct dri_screen *screen = dri_screen(sPriv);
 304
 305    screen->pipe_screen->destroy(screen->pipe_screen);
 306    FREE(screen);
 307    sPriv->private = NULL;
 308 }
 309
 310 PUBLIC const struct __DriverAPIRec driDriverAPI = {
 311    .InitScreen = dri_init_screen,
 312    .DestroyScreen = dri_destroy_screen,
 313    .CreateContext = dri_create_context,
 314    .DestroyContext = dri_destroy_context,
 315    .CreateBuffer = dri_create_buffer,
 316    .DestroyBuffer = dri_destroy_buffer,
 317    .SwapBuffers = dri_swap_buffers,
 318    .MakeCurrent = dri_make_current,
 319    .UnbindContext = dri_unbind_context,
 320    .GetSwapInfo = dri_get_swap_info,
 321    .GetDrawableMSC = driDrawableGetMSC32,
 322    .WaitForMSC = driWaitForMSC32,
 323    .CopySubBuffer = dri_copy_sub_buffer,
 324    .InitScreen = dri_init_screen,
 325    .InitScreen2 = dri_init_screen2,
 326 };
 327
 328 /* vim: set sw=3 ts=8 sts=3 expandtab: */