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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 
34 #include "dri_screen.h"
35 #include "dri_context.h"
36 #include "dri_helpers.h"
37 
38 #include "util/u_inlines.h"
39 #include "pipe/p_screen.h"
40 #include "pipe/p_format.h"
41 #include "pipe-loader/pipe_loader.h"
42 #include "state_tracker/st_gl_api.h" /* for st_gl_api_create */
43 #include "frontend/drm_driver.h"
44 
45 #include "util/u_debug.h"
46 #include "util/u_driconf.h"
47 #include "util/format/u_format_s3tc.h"
48 
49 #define MSAA_VISUAL_MAX_SAMPLES 32
50 
51 #undef false
52 
53 const __DRIconfigOptionsExtension gallium_config_options = {
54    .base = { __DRI_CONFIG_OPTIONS, 2 },
55    .getXml = pipe_loader_get_driinfo_xml
56 };
57 
58 #define false 0
59 
60 void
dri_init_options(struct dri_screen * screen)61 dri_init_options(struct dri_screen *screen)
62 {
63    pipe_loader_config_options(screen->dev);
64 
65    struct st_config_options *options = &screen->options;
66    const struct driOptionCache *optionCache = &screen->dev->option_cache;
67 
68    u_driconf_fill_st_options(options, optionCache);
69 }
70 
71 static unsigned
dri_loader_get_cap(struct dri_screen * screen,enum dri_loader_cap cap)72 dri_loader_get_cap(struct dri_screen *screen, enum dri_loader_cap cap)
73 {
74    const __DRIdri2LoaderExtension *dri2_loader = screen->sPriv->dri2.loader;
75    const __DRIimageLoaderExtension *image_loader = screen->sPriv->image.loader;
76 
77    if (dri2_loader && dri2_loader->base.version >= 4 &&
78        dri2_loader->getCapability)
79       return dri2_loader->getCapability(screen->sPriv->loaderPrivate, cap);
80 
81    if (image_loader && image_loader->base.version >= 2 &&
82        image_loader->getCapability)
83       return image_loader->getCapability(screen->sPriv->loaderPrivate, cap);
84 
85    return 0;
86 }
87 
88 static const __DRIconfig **
dri_fill_in_modes(struct dri_screen * screen)89 dri_fill_in_modes(struct dri_screen *screen)
90 {
91    static const mesa_format mesa_formats[] = {
92       MESA_FORMAT_B10G10R10A2_UNORM,
93       MESA_FORMAT_B10G10R10X2_UNORM,
94       MESA_FORMAT_R10G10B10A2_UNORM,
95       MESA_FORMAT_R10G10B10X2_UNORM,
96       MESA_FORMAT_B8G8R8A8_UNORM,
97       MESA_FORMAT_B8G8R8X8_UNORM,
98       MESA_FORMAT_B8G8R8A8_SRGB,
99       MESA_FORMAT_B8G8R8X8_SRGB,
100       MESA_FORMAT_B5G6R5_UNORM,
101       MESA_FORMAT_RGBA_FLOAT16,
102       MESA_FORMAT_RGBX_FLOAT16,
103 
104       /* The 32-bit RGBA format must not precede the 32-bit BGRA format.
105        * Likewise for RGBX and BGRX.  Otherwise, the GLX client and the GLX
106        * server may disagree on which format the GLXFBConfig represents,
107        * resulting in swapped color channels.
108        *
109        * The problem, as of 2017-05-30:
110        * When matching a GLXFBConfig to a __DRIconfig, GLX ignores the channel
111        * order and chooses the first __DRIconfig with the expected channel
112        * sizes. Specifically, GLX compares the GLXFBConfig's and __DRIconfig's
113        * __DRI_ATTRIB_{CHANNEL}_SIZE but ignores __DRI_ATTRIB_{CHANNEL}_MASK.
114        *
115        * EGL does not suffer from this problem. It correctly compares the
116        * channel masks when matching EGLConfig to __DRIconfig.
117        */
118 
119       /* Required by Android, for HAL_PIXEL_FORMAT_RGBA_8888. */
120       MESA_FORMAT_R8G8B8A8_UNORM,
121 
122       /* Required by Android, for HAL_PIXEL_FORMAT_RGBX_8888. */
123       MESA_FORMAT_R8G8B8X8_UNORM,
124 
125       /* Required by Android, for HAL_PIXEL_FORMAT_RGBA_8888. */
126       MESA_FORMAT_R8G8B8A8_SRGB,
127 
128       /* Required by Android, for HAL_PIXEL_FORMAT_RGBX_8888. */
129       MESA_FORMAT_R8G8B8X8_SRGB,
130    };
131    static const enum pipe_format pipe_formats[] = {
132       PIPE_FORMAT_B10G10R10A2_UNORM,
133       PIPE_FORMAT_B10G10R10X2_UNORM,
134       PIPE_FORMAT_R10G10B10A2_UNORM,
135       PIPE_FORMAT_R10G10B10X2_UNORM,
136       PIPE_FORMAT_BGRA8888_UNORM,
137       PIPE_FORMAT_BGRX8888_UNORM,
138       PIPE_FORMAT_BGRA8888_SRGB,
139       PIPE_FORMAT_BGRX8888_SRGB,
140       PIPE_FORMAT_B5G6R5_UNORM,
141       PIPE_FORMAT_R16G16B16A16_FLOAT,
142       PIPE_FORMAT_R16G16B16X16_FLOAT,
143       PIPE_FORMAT_RGBA8888_UNORM,
144       PIPE_FORMAT_RGBX8888_UNORM,
145       PIPE_FORMAT_RGBA8888_SRGB,
146       PIPE_FORMAT_RGBX8888_SRGB,
147    };
148    mesa_format format;
149    __DRIconfig **configs = NULL;
150    uint8_t depth_bits_array[5];
151    uint8_t stencil_bits_array[5];
152    unsigned depth_buffer_factor;
153    unsigned msaa_samples_max;
154    unsigned i;
155    struct pipe_screen *p_screen = screen->base.screen;
156    bool pf_z16, pf_x8z24, pf_z24x8, pf_s8z24, pf_z24s8, pf_z32;
157    bool mixed_color_depth;
158    bool allow_rgba_ordering;
159    bool allow_rgb10;
160    bool allow_fp16;
161 
162    static const GLenum back_buffer_modes[] = {
163       __DRI_ATTRIB_SWAP_NONE, __DRI_ATTRIB_SWAP_UNDEFINED,
164       __DRI_ATTRIB_SWAP_COPY
165    };
166 
167    if (driQueryOptionb(&screen->dev->option_cache, "always_have_depth_buffer")) {
168       /* all visuals will have a depth buffer */
169       depth_buffer_factor = 0;
170    }
171    else {
172       depth_bits_array[0] = 0;
173       stencil_bits_array[0] = 0;
174       depth_buffer_factor = 1;
175    }
176 
177    allow_rgba_ordering = dri_loader_get_cap(screen, DRI_LOADER_CAP_RGBA_ORDERING);
178    allow_rgb10 = driQueryOptionb(&screen->dev->option_cache, "allow_rgb10_configs");
179    allow_fp16 = dri_loader_get_cap(screen, DRI_LOADER_CAP_FP16);
180 
181    msaa_samples_max = (screen->st_api->feature_mask & ST_API_FEATURE_MS_VISUALS_MASK)
182       ? MSAA_VISUAL_MAX_SAMPLES : 1;
183 
184    pf_x8z24 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24X8_UNORM,
185 					    PIPE_TEXTURE_2D, 0, 0,
186                                             PIPE_BIND_DEPTH_STENCIL);
187    pf_z24x8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_X8Z24_UNORM,
188 					    PIPE_TEXTURE_2D, 0, 0,
189                                             PIPE_BIND_DEPTH_STENCIL);
190    pf_s8z24 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z24_UNORM_S8_UINT,
191 					    PIPE_TEXTURE_2D, 0, 0,
192                                             PIPE_BIND_DEPTH_STENCIL);
193    pf_z24s8 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_S8_UINT_Z24_UNORM,
194 					    PIPE_TEXTURE_2D, 0, 0,
195                                             PIPE_BIND_DEPTH_STENCIL);
196    pf_z16 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z16_UNORM,
197                                           PIPE_TEXTURE_2D, 0, 0,
198                                           PIPE_BIND_DEPTH_STENCIL);
199    pf_z32 = p_screen->is_format_supported(p_screen, PIPE_FORMAT_Z32_UNORM,
200                                           PIPE_TEXTURE_2D, 0, 0,
201                                           PIPE_BIND_DEPTH_STENCIL);
202 
203    if (pf_z16) {
204       depth_bits_array[depth_buffer_factor] = 16;
205       stencil_bits_array[depth_buffer_factor++] = 0;
206    }
207    if (pf_x8z24 || pf_z24x8) {
208       depth_bits_array[depth_buffer_factor] = 24;
209       stencil_bits_array[depth_buffer_factor++] = 0;
210       screen->d_depth_bits_last = pf_x8z24;
211    }
212    if (pf_s8z24 || pf_z24s8) {
213       depth_bits_array[depth_buffer_factor] = 24;
214       stencil_bits_array[depth_buffer_factor++] = 8;
215       screen->sd_depth_bits_last = pf_s8z24;
216    }
217    if (pf_z32) {
218       depth_bits_array[depth_buffer_factor] = 32;
219       stencil_bits_array[depth_buffer_factor++] = 0;
220    }
221 
222    mixed_color_depth =
223       p_screen->get_param(p_screen, PIPE_CAP_MIXED_COLOR_DEPTH_BITS);
224 
225    assert(ARRAY_SIZE(mesa_formats) == ARRAY_SIZE(pipe_formats));
226 
227    /* Add configs. */
228    for (format = 0; format < ARRAY_SIZE(mesa_formats); format++) {
229       __DRIconfig **new_configs = NULL;
230       unsigned num_msaa_modes = 0; /* includes a single-sample mode */
231       uint8_t msaa_modes[MSAA_VISUAL_MAX_SAMPLES];
232 
233       /* Expose only BGRA ordering if the loader doesn't support RGBA ordering. */
234       if (!allow_rgba_ordering &&
235           (mesa_formats[format] == MESA_FORMAT_R8G8B8A8_UNORM ||
236            mesa_formats[format] == MESA_FORMAT_R8G8B8X8_UNORM ||
237            mesa_formats[format] == MESA_FORMAT_R8G8B8A8_SRGB  ||
238            mesa_formats[format] == MESA_FORMAT_R8G8B8X8_SRGB))
239          continue;
240 
241       if (!allow_rgb10 &&
242           (mesa_formats[format] == MESA_FORMAT_B10G10R10A2_UNORM ||
243            mesa_formats[format] == MESA_FORMAT_B10G10R10X2_UNORM ||
244            mesa_formats[format] == MESA_FORMAT_R10G10B10A2_UNORM ||
245            mesa_formats[format] == MESA_FORMAT_R10G10B10X2_UNORM))
246          continue;
247 
248       if (!allow_fp16 &&
249           (mesa_formats[format] == MESA_FORMAT_RGBA_FLOAT16 ||
250            mesa_formats[format] == MESA_FORMAT_RGBX_FLOAT16))
251          continue;
252 
253       if (!p_screen->is_format_supported(p_screen, pipe_formats[format],
254                                          PIPE_TEXTURE_2D, 0, 0,
255                                          PIPE_BIND_RENDER_TARGET |
256                                          PIPE_BIND_DISPLAY_TARGET))
257          continue;
258 
259       for (i = 1; i <= msaa_samples_max; i++) {
260          int samples = i > 1 ? i : 0;
261 
262          if (p_screen->is_format_supported(p_screen, pipe_formats[format],
263                                            PIPE_TEXTURE_2D, samples, samples,
264                                            PIPE_BIND_RENDER_TARGET)) {
265             msaa_modes[num_msaa_modes++] = samples;
266          }
267       }
268 
269       if (num_msaa_modes) {
270          /* Single-sample configs with an accumulation buffer. */
271          new_configs = driCreateConfigs(mesa_formats[format],
272                                         depth_bits_array, stencil_bits_array,
273                                         depth_buffer_factor, back_buffer_modes,
274                                         ARRAY_SIZE(back_buffer_modes),
275                                         msaa_modes, 1,
276                                         GL_TRUE, !mixed_color_depth);
277          configs = driConcatConfigs(configs, new_configs);
278 
279          /* Multi-sample configs without an accumulation buffer. */
280          if (num_msaa_modes > 1) {
281             new_configs = driCreateConfigs(mesa_formats[format],
282                                            depth_bits_array, stencil_bits_array,
283                                            depth_buffer_factor, back_buffer_modes,
284                                            ARRAY_SIZE(back_buffer_modes),
285                                            msaa_modes+1, num_msaa_modes-1,
286                                            GL_FALSE, !mixed_color_depth);
287             configs = driConcatConfigs(configs, new_configs);
288          }
289       }
290    }
291 
292    if (configs == NULL) {
293       debug_printf("%s: driCreateConfigs failed\n", __FUNCTION__);
294       return NULL;
295    }
296 
297    return (const __DRIconfig **)configs;
298 }
299 
300 /**
301  * Roughly the converse of dri_fill_in_modes.
302  */
303 void
dri_fill_st_visual(struct st_visual * stvis,const struct dri_screen * screen,const struct gl_config * mode)304 dri_fill_st_visual(struct st_visual *stvis,
305                    const struct dri_screen *screen,
306                    const struct gl_config *mode)
307 {
308    memset(stvis, 0, sizeof(*stvis));
309 
310    if (!mode)
311       return;
312 
313    /* Deduce the color format. */
314    switch (mode->redMask) {
315    case 0:
316       /* Formats > 32 bpp */
317       assert(mode->floatMode);
318       if (mode->alphaShift > -1) {
319          assert(mode->alphaShift == 48);
320          stvis->color_format = PIPE_FORMAT_R16G16B16A16_FLOAT;
321       } else {
322          stvis->color_format = PIPE_FORMAT_R16G16B16X16_FLOAT;
323       }
324       break;
325 
326    case 0x3FF00000:
327       if (mode->alphaMask) {
328          assert(mode->alphaMask == 0xC0000000);
329          stvis->color_format = PIPE_FORMAT_B10G10R10A2_UNORM;
330       } else {
331          stvis->color_format = PIPE_FORMAT_B10G10R10X2_UNORM;
332       }
333       break;
334 
335    case 0x000003FF:
336       if (mode->alphaMask) {
337          assert(mode->alphaMask == 0xC0000000);
338          stvis->color_format = PIPE_FORMAT_R10G10B10A2_UNORM;
339       } else {
340          stvis->color_format = PIPE_FORMAT_R10G10B10X2_UNORM;
341       }
342       break;
343 
344    case 0x00FF0000:
345       if (mode->alphaMask) {
346          assert(mode->alphaMask == 0xFF000000);
347          stvis->color_format = mode->sRGBCapable ?
348                                   PIPE_FORMAT_BGRA8888_SRGB :
349                                   PIPE_FORMAT_BGRA8888_UNORM;
350       } else {
351          stvis->color_format = mode->sRGBCapable ?
352                                   PIPE_FORMAT_BGRX8888_SRGB :
353                                   PIPE_FORMAT_BGRX8888_UNORM;
354       }
355       break;
356 
357    case 0x000000FF:
358       if (mode->alphaMask) {
359          assert(mode->alphaMask == 0xFF000000);
360          stvis->color_format = mode->sRGBCapable ?
361                                   PIPE_FORMAT_RGBA8888_SRGB :
362                                   PIPE_FORMAT_RGBA8888_UNORM;
363       } else {
364          stvis->color_format = mode->sRGBCapable ?
365                                   PIPE_FORMAT_RGBX8888_SRGB :
366                                   PIPE_FORMAT_RGBX8888_UNORM;
367       }
368       break;
369 
370    case 0x0000F800:
371       stvis->color_format = PIPE_FORMAT_B5G6R5_UNORM;
372       break;
373 
374    default:
375       assert(!"unsupported visual: invalid red mask");
376       return;
377    }
378 
379    if (mode->samples > 0) {
380       if (debug_get_bool_option("DRI_NO_MSAA", false))
381          stvis->samples = 0;
382       else
383          stvis->samples = mode->samples;
384    }
385 
386    switch (mode->depthBits) {
387    default:
388    case 0:
389       stvis->depth_stencil_format = PIPE_FORMAT_NONE;
390       break;
391    case 16:
392       stvis->depth_stencil_format = PIPE_FORMAT_Z16_UNORM;
393       break;
394    case 24:
395       if (mode->stencilBits == 0) {
396 	 stvis->depth_stencil_format = (screen->d_depth_bits_last) ?
397                                           PIPE_FORMAT_Z24X8_UNORM:
398                                           PIPE_FORMAT_X8Z24_UNORM;
399       } else {
400 	 stvis->depth_stencil_format = (screen->sd_depth_bits_last) ?
401                                           PIPE_FORMAT_Z24_UNORM_S8_UINT:
402                                           PIPE_FORMAT_S8_UINT_Z24_UNORM;
403       }
404       break;
405    case 32:
406       stvis->depth_stencil_format = PIPE_FORMAT_Z32_UNORM;
407       break;
408    }
409 
410    stvis->accum_format = (mode->accumRedBits > 0) ?
411       PIPE_FORMAT_R16G16B16A16_SNORM : PIPE_FORMAT_NONE;
412 
413    stvis->buffer_mask |= ST_ATTACHMENT_FRONT_LEFT_MASK;
414    if (mode->doubleBufferMode) {
415       stvis->buffer_mask |= ST_ATTACHMENT_BACK_LEFT_MASK;
416    }
417    if (mode->stereoMode) {
418       stvis->buffer_mask |= ST_ATTACHMENT_FRONT_RIGHT_MASK;
419       if (mode->doubleBufferMode)
420          stvis->buffer_mask |= ST_ATTACHMENT_BACK_RIGHT_MASK;
421    }
422 
423    if (mode->depthBits > 0 || mode->stencilBits > 0)
424       stvis->buffer_mask |= ST_ATTACHMENT_DEPTH_STENCIL_MASK;
425    /* let the gallium frontend allocate the accum buffer */
426 }
427 
428 static bool
dri_get_egl_image(struct st_manager * smapi,void * egl_image,struct st_egl_image * stimg)429 dri_get_egl_image(struct st_manager *smapi,
430                   void *egl_image,
431                   struct st_egl_image *stimg)
432 {
433    struct dri_screen *screen = (struct dri_screen *)smapi;
434    __DRIimage *img = NULL;
435    const struct dri2_format_mapping *map;
436 
437    if (screen->lookup_egl_image_validated) {
438       img = screen->lookup_egl_image_validated(screen, egl_image);
439    } else if (screen->lookup_egl_image) {
440       img = screen->lookup_egl_image(screen, egl_image);
441    }
442 
443    if (!img)
444       return FALSE;
445 
446    stimg->texture = NULL;
447    pipe_resource_reference(&stimg->texture, img->texture);
448    map = dri2_get_mapping_by_fourcc(img->dri_fourcc);
449    stimg->format = map ? map->pipe_format : img->texture->format;
450    stimg->level = img->level;
451    stimg->layer = img->layer;
452 
453    if (img->imported_dmabuf && map) {
454       /* Guess sized internal format for dma-bufs. Could be used
455        * by EXT_EGL_image_storage.
456        */
457       mesa_format mesa_format = driImageFormatToGLFormat(map->dri_format);
458       stimg->internalformat = driGLFormatToSizedInternalGLFormat(mesa_format);
459    }
460 
461    return TRUE;
462 }
463 
464 static bool
dri_validate_egl_image(struct st_manager * smapi,void * egl_image)465 dri_validate_egl_image(struct st_manager *smapi,
466                        void *egl_image)
467 {
468    struct dri_screen *screen = (struct dri_screen *)smapi;
469 
470    return screen->validate_egl_image(screen, egl_image);
471 }
472 
473 static int
dri_get_param(struct st_manager * smapi,enum st_manager_param param)474 dri_get_param(struct st_manager *smapi,
475               enum st_manager_param param)
476 {
477    struct dri_screen *screen = (struct dri_screen *)smapi;
478 
479    switch(param) {
480    case ST_MANAGER_BROKEN_INVALIDATE:
481       return screen->broken_invalidate;
482    default:
483       return 0;
484    }
485 }
486 
487 void
dri_destroy_screen_helper(struct dri_screen * screen)488 dri_destroy_screen_helper(struct dri_screen * screen)
489 {
490    if (screen->base.destroy)
491       screen->base.destroy(&screen->base);
492 
493    if (screen->st_api && screen->st_api->destroy)
494       screen->st_api->destroy(screen->st_api);
495 
496    if (screen->base.screen)
497       screen->base.screen->destroy(screen->base.screen);
498 
499    mtx_destroy(&screen->opencl_func_mutex);
500 }
501 
502 void
dri_destroy_screen(__DRIscreen * sPriv)503 dri_destroy_screen(__DRIscreen * sPriv)
504 {
505    struct dri_screen *screen = dri_screen(sPriv);
506 
507    dri_destroy_screen_helper(screen);
508 
509    pipe_loader_release(&screen->dev, 1);
510 
511    free(screen->options.force_gl_vendor);
512    free(screen->options.force_gl_renderer);
513 
514    /* The caller in dri_util preserves the fd ownership */
515    free(screen);
516    sPriv->driverPrivate = NULL;
517    sPriv->extensions = NULL;
518 }
519 
520 static void
dri_postprocessing_init(struct dri_screen * screen)521 dri_postprocessing_init(struct dri_screen *screen)
522 {
523    unsigned i;
524 
525    for (i = 0; i < PP_FILTERS; i++) {
526       screen->pp_enabled[i] = driQueryOptioni(&screen->dev->option_cache,
527                                               pp_filters[i].name);
528    }
529 }
530 
531 static void
dri_set_background_context(struct st_context_iface * st,struct util_queue_monitoring * queue_info)532 dri_set_background_context(struct st_context_iface *st,
533                            struct util_queue_monitoring *queue_info)
534 {
535    struct dri_context *ctx = (struct dri_context *)st->st_manager_private;
536    const __DRIbackgroundCallableExtension *backgroundCallable =
537       ctx->sPriv->dri2.backgroundCallable;
538 
539    /* Note: Mesa will only call this function if GL multithreading is enabled
540     * We only do that if the loader exposed the __DRI_BACKGROUND_CALLABLE
541     * extension. So we know that backgroundCallable is not NULL.
542     */
543    assert(backgroundCallable);
544    backgroundCallable->setBackgroundContext(ctx->cPriv->loaderPrivate);
545 
546    if (ctx->hud)
547       hud_add_queue_for_monitoring(ctx->hud, queue_info);
548 }
549 
550 const __DRIconfig **
dri_init_screen_helper(struct dri_screen * screen,struct pipe_screen * pscreen)551 dri_init_screen_helper(struct dri_screen *screen,
552                        struct pipe_screen *pscreen)
553 {
554    screen->base.screen = pscreen;
555    screen->base.get_egl_image = dri_get_egl_image;
556    screen->base.get_param = dri_get_param;
557    screen->base.set_background_context = dri_set_background_context;
558 
559    if (screen->validate_egl_image)
560       screen->base.validate_egl_image = dri_validate_egl_image;
561 
562    screen->st_api = st_gl_api_create();
563    if (!screen->st_api)
564       return NULL;
565 
566    if(pscreen->get_param(pscreen, PIPE_CAP_NPOT_TEXTURES))
567       screen->target = PIPE_TEXTURE_2D;
568    else
569       screen->target = PIPE_TEXTURE_RECT;
570 
571    dri_postprocessing_init(screen);
572 
573    screen->st_api->query_versions(screen->st_api, &screen->base,
574                                   &screen->options,
575                                   &screen->sPriv->max_gl_core_version,
576                                   &screen->sPriv->max_gl_compat_version,
577                                   &screen->sPriv->max_gl_es1_version,
578                                   &screen->sPriv->max_gl_es2_version);
579 
580    return dri_fill_in_modes(screen);
581 }
582 
583 /* vim: set sw=3 ts=8 sts=3 expandtab: */
584