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 #include "dri_st_api.h"
  40 #include "dri1.h"
  41 #include "dri2.h"
  42
  43 #include "util/u_inlines.h"
  44 #include "pipe/p_screen.h"
  45 #include "pipe/p_format.h"
  46 #include "state_tracker/drm_api.h"
  47
  48 #include "util/u_debug.h"
  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 const uint __driNConfigOptions = 3;
  60
  61 const __DRIconfig **
  62 dri_fill_in_modes(struct dri_screen *screen,
  63                   unsigned pixel_bits)
  64 {
  65    __DRIconfig **configs = NULL;
  66    __DRIconfig **configs_r5g6b5 = NULL;
  67    __DRIconfig **configs_a8r8g8b8 = NULL;
  68    __DRIconfig **configs_x8r8g8b8 = NULL;
  69    unsigned num_modes;
  70    uint8_t depth_bits_array[5];
  71    uint8_t stencil_bits_array[5];
  72    uint8_t msaa_samples_array[2];
  73    unsigned depth_buffer_factor;
  74    unsigned back_buffer_factor;
  75    unsigned msaa_samples_factor;
  76    struct pipe_screen *p_screen = screen->pipe_screen;
  77    boolean pf_r5g6b5, pf_a8r8g8b8, pf_x8r8g8b8;
  78    boolean pf_z16, pf_x8z24, pf_z24x8, pf_s8z24, pf_z24s8, pf_z32;
  79
  80    static const GLenum back_buffer_modes[] = {
  81       GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
  82    };
  83
  84    depth_bits_array[0] = 0;
  85    stencil_bits_array[0] = 0;
  86    depth_buffer_factor = 1;
  87
  88    pf_x8z24 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24X8_UNORM,
  89                                             PIPE_TEXTURE_2D,
  90                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
  91    pf_z24x8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_X8Z24_UNORM,
  92                                             PIPE_TEXTURE_2D,
  93                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
  94    pf_s8z24 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24S8_UNORM,
  95                                             PIPE_TEXTURE_2D,
  96                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
  97    pf_z24s8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_S8Z24_UNORM,
  98                                             PIPE_TEXTURE_2D,
  99                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 100    pf_a8r8g8b8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_B8G8R8A8_UNORM,
 101                                                PIPE_TEXTURE_2D,
 102                                                PIPE_TEXTURE_USAGE_RENDER_TARGET, 0);
 103    pf_x8r8g8b8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_B8G8R8X8_UNORM,
 104                                                PIPE_TEXTURE_2D,
 105                                                PIPE_TEXTURE_USAGE_RENDER_TARGET, 0);
 106    pf_r5g6b5 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_B5G6R5_UNORM,
 107                                              PIPE_TEXTURE_2D,
 108                                              PIPE_TEXTURE_USAGE_RENDER_TARGET, 0);
 109
 110    /* We can only get a 16 or 32 bit depth buffer with getBuffersWithFormat */
 111    if (dri_with_format(screen->sPriv)) {
 112       pf_z16 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z16_UNORM,
 113                                              PIPE_TEXTURE_2D,
 114                                              PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 115       pf_z32 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z32_UNORM,
 116                                              PIPE_TEXTURE_2D,
 117                                              PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 118    } else {
 119       pf_z16 = FALSE;
 120       pf_z32 = FALSE;
 121    }
 122
 123    if (pf_z16) {
 124       depth_bits_array[depth_buffer_factor] = 16;
 125       stencil_bits_array[depth_buffer_factor++] = 0;
 126    }
 127    if (pf_x8z24 || pf_z24x8) {
 128       depth_bits_array[depth_buffer_factor] = 24;
 129       stencil_bits_array[depth_buffer_factor++] = 0;
 130       screen->d_depth_bits_last = pf_x8z24;
 131    }
 132    if (pf_s8z24 || pf_z24s8) {
 133       depth_bits_array[depth_buffer_factor] = 24;
 134       stencil_bits_array[depth_buffer_factor++] = 8;
 135       screen->sd_depth_bits_last = pf_s8z24;
 136    }
 137    if (pf_z32) {
 138       depth_bits_array[depth_buffer_factor] = 32;
 139       stencil_bits_array[depth_buffer_factor++] = 0;
 140    }
 141
 142    msaa_samples_array[0] = 0;
 143    msaa_samples_array[1] = 4;
 144    back_buffer_factor = 3;
 145    msaa_samples_factor = 2;
 146
 147    num_modes =
 148       depth_buffer_factor * back_buffer_factor * msaa_samples_factor * 4;
 149
 150    if (pf_r5g6b5)
 151       configs_r5g6b5 = driCreateConfigs(GL_RGB, GL_UNSIGNED_SHORT_5_6_5,
 152                                         depth_bits_array, stencil_bits_array,
 153                                         depth_buffer_factor, back_buffer_modes,
 154                                         back_buffer_factor,
 155                                         msaa_samples_array, msaa_samples_factor,
 156                                         GL_TRUE);
 157
 158    if (pf_a8r8g8b8)
 159       configs_a8r8g8b8 = driCreateConfigs(GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV,
 160                                           depth_bits_array,
 161                                           stencil_bits_array,
 162                                           depth_buffer_factor,
 163                                           back_buffer_modes,
 164                                           back_buffer_factor,
 165                                           msaa_samples_array,
 166                                           msaa_samples_factor,
 167                                           GL_TRUE);
 168
 169    if (pf_x8r8g8b8)
 170       configs_x8r8g8b8 = driCreateConfigs(GL_BGR, GL_UNSIGNED_INT_8_8_8_8_REV,
 171                                           depth_bits_array,
 172                                           stencil_bits_array,
 173                                           depth_buffer_factor,
 174                                           back_buffer_modes,
 175                                           back_buffer_factor,
 176                                           msaa_samples_array,
 177                                           msaa_samples_factor,
 178                                           GL_TRUE);
 179
 180    if (pixel_bits == 16) {
 181       configs = configs_r5g6b5;
 182       if (configs_a8r8g8b8)
 183          configs = configs ? driConcatConfigs(configs, configs_a8r8g8b8) : configs_a8r8g8b8;
 184       if (configs_x8r8g8b8)
 185          configs = configs ? driConcatConfigs(configs, configs_x8r8g8b8) : configs_x8r8g8b8;
 186    } else {
 187       configs = configs_a8r8g8b8;
 188       if (configs_x8r8g8b8)
 189          configs = configs ? driConcatConfigs(configs, configs_x8r8g8b8) : configs_x8r8g8b8;
 190       if (configs_r5g6b5)
 191          configs = configs ? driConcatConfigs(configs, configs_r5g6b5) : configs_r5g6b5;
 192    }
 193
 194    if (configs == NULL) {
 195       debug_printf("%s: driCreateConfigs failed\n", __FUNCTION__);
 196       return NULL;
 197    }
 198
 199    return (const __DRIconfig **)configs;
 200 }
 201
 202 /**
 203  * Roughly the converse of dri_fill_in_modes.
 204  */
 205 void
 206 dri_fill_st_visual(struct st_visual *stvis, struct dri_screen *screen,
 207                    const __GLcontextModes *mode)
 208 {
 209    memset(stvis, 0, sizeof(*stvis));
 210
 211    stvis->samples = mode->samples;
 212    stvis->render_buffer = ST_ATTACHMENT_INVALID;
 213
 214    if (mode->redBits == 8) {
 215       if (mode->alphaBits == 8)
 216          stvis->color_format = PIPE_FORMAT_B8G8R8A8_UNORM;
 217       else
 218          stvis->color_format = PIPE_FORMAT_B8G8R8X8_UNORM;
 219    } else {
 220       stvis->color_format = PIPE_FORMAT_B5G6R5_UNORM;
 221    }
 222
 223    switch (mode->depthBits) {
 224    default:
 225    case 0:
 226       stvis->depth_stencil_format = PIPE_FORMAT_NONE;
 227       break;
 228    case 16:
 229       stvis->depth_stencil_format = PIPE_FORMAT_Z16_UNORM;
 230       break;
 231    case 24:
 232       if (mode->stencilBits == 0) {
 233          stvis->depth_stencil_format = (screen->d_depth_bits_last) ?
 234                                           PIPE_FORMAT_Z24X8_UNORM:
 235                                           PIPE_FORMAT_X8Z24_UNORM;
 236       } else {
 237          stvis->depth_stencil_format = (screen->sd_depth_bits_last) ?
 238                                           PIPE_FORMAT_Z24S8_UNORM:
 239                                           PIPE_FORMAT_S8Z24_UNORM;
 240       }
 241       break;
 242    case 32:
 243       stvis->depth_stencil_format = PIPE_FORMAT_Z32_UNORM;
 244       break;
 245    }
 246
 247    stvis->accum_format = (mode->haveAccumBuffer) ?
 248       PIPE_FORMAT_R16G16B16A16_SNORM : PIPE_FORMAT_NONE;
 249
 250    stvis->buffer_mask |= ST_ATTACHMENT_FRONT_LEFT_MASK;
 251    if (mode->doubleBufferMode)
 252       stvis->buffer_mask |= ST_ATTACHMENT_BACK_LEFT_MASK;
 253    if (mode->stereoMode) {
 254       stvis->buffer_mask |= ST_ATTACHMENT_FRONT_RIGHT_MASK;
 255       if (mode->doubleBufferMode)
 256          stvis->buffer_mask |= ST_ATTACHMENT_BACK_RIGHT_MASK;
 257    }
 258
 259    if (mode->haveDepthBuffer || mode->haveStencilBuffer)
 260       stvis->buffer_mask |= ST_ATTACHMENT_DEPTH_STENCIL_MASK;
 261    /* let the state tracker allocate the accum buffer */
 262 }
 263
 264 /**
 265  * Get information about previous buffer swaps.
 266  */
 267 static int
 268 dri_get_swap_info(__DRIdrawable * dPriv, __DRIswapInfo * sInfo)
 269 {
 270    if (dPriv == NULL || dPriv->driverPrivate == NULL || sInfo == NULL)
 271       return -1;
 272    else
 273       return 0;
 274 }
 275
 276 static void
 277 dri_destroy_option_cache(struct dri_screen * screen)
 278 {
 279    int i;
 280
 281    for (i = 0; i < (1 << screen->optionCache.tableSize); ++i) {
 282       FREE(screen->optionCache.info[i].name);
 283       FREE(screen->optionCache.info[i].ranges);
 284    }
 285
 286    FREE(screen->optionCache.info);
 287    FREE(screen->optionCache.values);
 288 }
 289
 290 void
 291 dri_destroy_screen(__DRIscreen * sPriv)
 292 {
 293    struct dri_screen *screen = dri_screen(sPriv);
 294
 295    if (screen->dri1_pipe)
 296       screen->dri1_pipe->destroy(screen->dri1_pipe);
 297
 298    if (screen->smapi)
 299       dri_destroy_st_manager(screen->smapi);
 300    if (screen->pipe_screen)
 301       screen->pipe_screen->destroy(screen->pipe_screen);
 302
 303    dri_destroy_option_cache(screen);
 304
 305    FREE(screen);
 306    sPriv->private = NULL;
 307    sPriv->extensions = NULL;
 308 }
 309
 310 const struct __DriverAPIRec driDriverAPI = {
 311    .DestroyScreen = dri_destroy_screen,
 312    .CreateContext = dri_create_context,
 313    .DestroyContext = dri_destroy_context,
 314    .CreateBuffer = dri_create_buffer,
 315    .DestroyBuffer = dri_destroy_buffer,
 316    .MakeCurrent = dri_make_current,
 317    .UnbindContext = dri_unbind_context,
 318    .GetSwapInfo = dri_get_swap_info,
 319    .GetDrawableMSC = driDrawableGetMSC32,
 320    .WaitForMSC = driWaitForMSC32,
 321    .InitScreen2 = dri_init_screen2,
 322
 323    .InitScreen = dri1_init_screen,
 324    .SwapBuffers = dri1_swap_buffers,
 325    .CopySubBuffer = dri1_copy_sub_buffer,
 326 };
 327
 328 /* This is the table of extensions that the loader will dlsym() for. */
 329 PUBLIC const __DRIextension *__driDriverExtensions[] = {
 330     &driCoreExtension.base,
 331     &driLegacyExtension.base,
 332     &driDRI2Extension.base,
 333     NULL
 334 };
 335
 336 /* vim: set sw=3 ts=8 sts=3 expandtab: */