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_helper.h"
  41 #include "dri1.h"
  42 #include "dri2.h"
  43
  44 #include "util/u_inlines.h"
  45 #include "pipe/p_screen.h"
  46 #include "pipe/p_format.h"
  47 #include "state_tracker/drm_api.h"
  48
  49 #include "util/u_debug.h"
  50
  51 PUBLIC const char __driConfigOptions[] =
  52    DRI_CONF_BEGIN DRI_CONF_SECTION_PERFORMANCE
  53    DRI_CONF_FTHROTTLE_MODE(DRI_CONF_FTHROTTLE_IRQS)
  54    DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_DEF_INTERVAL_0)
  55    DRI_CONF_SECTION_END DRI_CONF_SECTION_QUALITY
  56 /* DRI_CONF_FORCE_S3TC_ENABLE(false) */
  57    DRI_CONF_ALLOW_LARGE_TEXTURES(1)
  58    DRI_CONF_SECTION_END DRI_CONF_END;
  59
  60 const uint __driNConfigOptions = 3;
  61
  62 const __DRIconfig **
  63 dri_fill_in_modes(struct dri_screen *screen,
  64                   unsigned pixel_bits)
  65 {
  66    __DRIconfig **configs = NULL;
  67    __DRIconfig **configs_r5g6b5 = NULL;
  68    __DRIconfig **configs_a8r8g8b8 = NULL;
  69    __DRIconfig **configs_x8r8g8b8 = NULL;
  70    unsigned num_modes;
  71    uint8_t depth_bits_array[5];
  72    uint8_t stencil_bits_array[5];
  73    uint8_t msaa_samples_array[2];
  74    unsigned depth_buffer_factor;
  75    unsigned back_buffer_factor;
  76    unsigned msaa_samples_factor;
  77    struct pipe_screen *p_screen = screen->pipe_screen;
  78    boolean pf_r5g6b5, pf_a8r8g8b8, pf_x8r8g8b8;
  79    boolean pf_z16, pf_x8z24, pf_z24x8, pf_s8z24, pf_z24s8, pf_z32;
  80
  81    static const GLenum back_buffer_modes[] = {
  82       GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
  83    };
  84
  85    depth_bits_array[0] = 0;
  86    stencil_bits_array[0] = 0;
  87    depth_buffer_factor = 1;
  88
  89    pf_x8z24 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24X8_UNORM,
  90                                             PIPE_TEXTURE_2D,
  91                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
  92    pf_z24x8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_X8Z24_UNORM,
  93                                             PIPE_TEXTURE_2D,
  94                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
  95    pf_s8z24 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24S8_UNORM,
  96                                             PIPE_TEXTURE_2D,
  97                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
  98    pf_z24s8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_S8Z24_UNORM,
  99                                             PIPE_TEXTURE_2D,
 100                                             PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 101    pf_a8r8g8b8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_B8G8R8A8_UNORM,
 102                                                PIPE_TEXTURE_2D,
 103                                                PIPE_TEXTURE_USAGE_RENDER_TARGET, 0);
 104    pf_x8r8g8b8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_B8G8R8X8_UNORM,
 105                                                PIPE_TEXTURE_2D,
 106                                                PIPE_TEXTURE_USAGE_RENDER_TARGET, 0);
 107    pf_r5g6b5 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_B5G6R5_UNORM,
 108                                              PIPE_TEXTURE_2D,
 109                                              PIPE_TEXTURE_USAGE_RENDER_TARGET, 0);
 110
 111    /* We can only get a 16 or 32 bit depth buffer with getBuffersWithFormat */
 112    if (dri_with_format(screen->sPriv)) {
 113       pf_z16 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z16_UNORM,
 114                                              PIPE_TEXTURE_2D,
 115                                              PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 116       pf_z32 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z32_UNORM,
 117                                              PIPE_TEXTURE_2D,
 118                                              PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
 119    } else {
 120       pf_z16 = FALSE;
 121       pf_z32 = FALSE;
 122    }
 123
 124    if (pf_z16) {
 125       depth_bits_array[depth_buffer_factor] = 16;
 126       stencil_bits_array[depth_buffer_factor++] = 0;
 127    }
 128    if (pf_x8z24 || pf_z24x8) {
 129       depth_bits_array[depth_buffer_factor] = 24;
 130       stencil_bits_array[depth_buffer_factor++] = 0;
 131       screen->d_depth_bits_last = pf_x8z24;
 132    }
 133    if (pf_s8z24 || pf_z24s8) {
 134       depth_bits_array[depth_buffer_factor] = 24;
 135       stencil_bits_array[depth_buffer_factor++] = 8;
 136       screen->sd_depth_bits_last = pf_s8z24;
 137    }
 138    if (pf_z32) {
 139       depth_bits_array[depth_buffer_factor] = 32;
 140       stencil_bits_array[depth_buffer_factor++] = 0;
 141    }
 142
 143    msaa_samples_array[0] = 0;
 144    msaa_samples_array[1] = 4;
 145    back_buffer_factor = 3;
 146    msaa_samples_factor = 2;
 147
 148    num_modes =
 149       depth_buffer_factor * back_buffer_factor * msaa_samples_factor * 4;
 150
 151    if (pf_r5g6b5)
 152       configs_r5g6b5 = driCreateConfigs(GL_RGB, GL_UNSIGNED_SHORT_5_6_5,
 153                                         depth_bits_array, stencil_bits_array,
 154                                         depth_buffer_factor, back_buffer_modes,
 155                                         back_buffer_factor,
 156                                         msaa_samples_array, msaa_samples_factor,
 157                                         GL_TRUE);
 158
 159    if (pf_a8r8g8b8)
 160       configs_a8r8g8b8 = driCreateConfigs(GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV,
 161                                           depth_bits_array,
 162                                           stencil_bits_array,
 163                                           depth_buffer_factor,
 164                                           back_buffer_modes,
 165                                           back_buffer_factor,
 166                                           msaa_samples_array,
 167                                           msaa_samples_factor,
 168                                           GL_TRUE);
 169
 170    if (pf_x8r8g8b8)
 171       configs_x8r8g8b8 = driCreateConfigs(GL_BGR, GL_UNSIGNED_INT_8_8_8_8_REV,
 172                                           depth_bits_array,
 173                                           stencil_bits_array,
 174                                           depth_buffer_factor,
 175                                           back_buffer_modes,
 176                                           back_buffer_factor,
 177                                           msaa_samples_array,
 178                                           msaa_samples_factor,
 179                                           GL_TRUE);
 180
 181    if (pixel_bits == 16) {
 182       configs = configs_r5g6b5;
 183       if (configs_a8r8g8b8)
 184          configs = configs ? driConcatConfigs(configs, configs_a8r8g8b8) : configs_a8r8g8b8;
 185       if (configs_x8r8g8b8)
 186          configs = configs ? driConcatConfigs(configs, configs_x8r8g8b8) : configs_x8r8g8b8;
 187    } else {
 188       configs = configs_a8r8g8b8;
 189       if (configs_x8r8g8b8)
 190          configs = configs ? driConcatConfigs(configs, configs_x8r8g8b8) : configs_x8r8g8b8;
 191       if (configs_r5g6b5)
 192          configs = configs ? driConcatConfigs(configs, configs_r5g6b5) : configs_r5g6b5;
 193    }
 194
 195    if (configs == NULL) {
 196       debug_printf("%s: driCreateConfigs failed\n", __FUNCTION__);
 197       return NULL;
 198    }
 199
 200    return (const __DRIconfig **)configs;
 201 }
 202
 203 /**
 204  * Roughly the converse of dri_fill_in_modes.
 205  */
 206 void
 207 dri_fill_st_visual(struct st_visual *stvis, struct dri_screen *screen,
 208                    const __GLcontextModes *mode)
 209 {
 210    memset(stvis, 0, sizeof(*stvis));
 211
 212    stvis->samples = mode->samples;
 213    stvis->render_buffer = ST_ATTACHMENT_INVALID;
 214
 215    if (mode->redBits == 8) {
 216       if (mode->alphaBits == 8)
 217          stvis->color_format = PIPE_FORMAT_B8G8R8A8_UNORM;
 218       else
 219          stvis->color_format = PIPE_FORMAT_B8G8R8X8_UNORM;
 220    } else {
 221       stvis->color_format = PIPE_FORMAT_B5G6R5_UNORM;
 222    }
 223
 224    switch (mode->depthBits) {
 225    default:
 226    case 0:
 227       stvis->depth_stencil_format = PIPE_FORMAT_NONE;
 228       break;
 229    case 16:
 230       stvis->depth_stencil_format = PIPE_FORMAT_Z16_UNORM;
 231       break;
 232    case 24:
 233       if (mode->stencilBits == 0) {
 234          stvis->depth_stencil_format = (screen->d_depth_bits_last) ?
 235                                           PIPE_FORMAT_Z24X8_UNORM:
 236                                           PIPE_FORMAT_X8Z24_UNORM;
 237       } else {
 238          stvis->depth_stencil_format = (screen->sd_depth_bits_last) ?
 239                                           PIPE_FORMAT_Z24S8_UNORM:
 240                                           PIPE_FORMAT_S8Z24_UNORM;
 241       }
 242       break;
 243    case 32:
 244       stvis->depth_stencil_format = PIPE_FORMAT_Z32_UNORM;
 245       break;
 246    }
 247
 248    stvis->accum_format = (mode->haveAccumBuffer) ?
 249       PIPE_FORMAT_R16G16B16A16_SNORM : PIPE_FORMAT_NONE;
 250
 251    stvis->buffer_mask |= ST_ATTACHMENT_FRONT_LEFT_MASK;
 252    if (mode->doubleBufferMode)
 253       stvis->buffer_mask |= ST_ATTACHMENT_BACK_LEFT_MASK;
 254    if (mode->stereoMode) {
 255       stvis->buffer_mask |= ST_ATTACHMENT_FRONT_RIGHT_MASK;
 256       if (mode->doubleBufferMode)
 257          stvis->buffer_mask |= ST_ATTACHMENT_BACK_RIGHT_MASK;
 258    }
 259
 260    if (mode->haveDepthBuffer || mode->haveStencilBuffer)
 261       stvis->buffer_mask |= ST_ATTACHMENT_DEPTH_STENCIL_MASK;
 262    /* let the state tracker allocate the accum buffer */
 263 }
 264
 265 /**
 266  * Get information about previous buffer swaps.
 267  */
 268 static int
 269 dri_get_swap_info(__DRIdrawable * dPriv, __DRIswapInfo * sInfo)
 270 {
 271    if (dPriv == NULL || dPriv->driverPrivate == NULL || sInfo == NULL)
 272       return -1;
 273    else
 274       return 0;
 275 }
 276
 277 static void
 278 dri_destroy_option_cache(struct dri_screen * screen)
 279 {
 280    int i;
 281
 282    for (i = 0; i < (1 << screen->optionCache.tableSize); ++i) {
 283       FREE(screen->optionCache.info[i].name);
 284       FREE(screen->optionCache.info[i].ranges);
 285    }
 286
 287    FREE(screen->optionCache.info);
 288    FREE(screen->optionCache.values);
 289 }
 290
 291 void
 292 dri_destroy_screen(__DRIscreen * sPriv)
 293 {
 294    struct dri_screen *screen = dri_screen(sPriv);
 295
 296    dri1_destroy_pipe_context(screen);
 297
 298    if (screen->smapi)
 299       dri_destroy_st_manager(screen->smapi);
 300
 301    if (screen->pipe_screen)
 302       screen->pipe_screen->destroy(screen->pipe_screen);
 303
 304    dri_destroy_option_cache(screen);
 305
 306    FREE(screen);
 307    sPriv->private = NULL;
 308    sPriv->extensions = NULL;
 309 }
 310
 311 const struct __DriverAPIRec driDriverAPI = {
 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    .MakeCurrent = dri_make_current,
 318    .UnbindContext = dri_unbind_context,
 319    .GetSwapInfo = dri_get_swap_info,
 320    .GetDrawableMSC = driDrawableGetMSC32,
 321    .WaitForMSC = driWaitForMSC32,
 322    .InitScreen2 = dri_init_screen2,
 323
 324    .InitScreen = dri1_init_screen,
 325    .SwapBuffers = dri1_swap_buffers,
 326    .CopySubBuffer = dri1_copy_sub_buffer,
 327 };
 328
 329 /* This is the table of extensions that the loader will dlsym() for. */
 330 PUBLIC const __DRIextension *__driDriverExtensions[] = {
 331     &driCoreExtension.base,
 332     &driLegacyExtension.base,
 333     &driDRI2Extension.base,
 334     NULL
 335 };
 336
 337 /* vim: set sw=3 ts=8 sts=3 expandtab: */