2 * Mesa 3-D graphics library
4 * Copyright (c) 2014 The Chromium OS Authors.
5 * Copyright © 2011 Intel Corporation
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
22 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
23 * DEALINGS IN THE SOFTWARE.
31 #include <sys/types.h>
37 #include "egl_dri2_fallbacks.h"
41 surfaceless_alloc_image(struct dri2_egl_display
*dri2_dpy
,
42 struct dri2_egl_surface
*dri2_surf
)
44 return dri2_dpy
->image
->createImage(
46 dri2_surf
->base
.Width
,
47 dri2_surf
->base
.Height
,
54 surfaceless_free_images(struct dri2_egl_surface
*dri2_surf
)
56 struct dri2_egl_display
*dri2_dpy
=
57 dri2_egl_display(dri2_surf
->base
.Resource
.Display
);
59 if (dri2_surf
->front
) {
60 dri2_dpy
->image
->destroyImage(dri2_surf
->front
);
61 dri2_surf
->front
= NULL
;
66 surfaceless_image_get_buffers(__DRIdrawable
*driDrawable
,
71 struct __DRIimageList
*buffers
)
73 struct dri2_egl_surface
*dri2_surf
= loaderPrivate
;
74 struct dri2_egl_display
*dri2_dpy
=
75 dri2_egl_display(dri2_surf
->base
.Resource
.Display
);
77 buffers
->image_mask
= 0;
78 buffers
->front
= NULL
;
81 /* The EGL 1.5 spec states that pbuffers are single-buffered. Specifically,
82 * the spec states that they have a back buffer but no front buffer, in
83 * contrast to pixmaps, which have a front buffer but no back buffer.
85 * Single-buffered surfaces with no front buffer confuse Mesa; so we deviate
86 * from the spec, following the precedent of Mesa's EGL X11 platform. The
87 * X11 platform correctly assigns pbuffers to single-buffered configs, but
88 * assigns the pbuffer a front buffer instead of a back buffer.
90 * Pbuffers in the X11 platform mostly work today, so let's just copy its
91 * behavior instead of trying to fix (and hence potentially breaking) the
95 if (buffer_mask
& __DRI_IMAGE_BUFFER_FRONT
) {
97 if (!dri2_surf
->front
)
99 surfaceless_alloc_image(dri2_dpy
, dri2_surf
);
101 buffers
->image_mask
|= __DRI_IMAGE_BUFFER_FRONT
;
102 buffers
->front
= dri2_surf
->front
;
109 dri2_surfaceless_create_surface(_EGLDriver
*drv
, _EGLDisplay
*disp
, EGLint type
,
110 _EGLConfig
*conf
, const EGLint
*attrib_list
)
112 struct dri2_egl_display
*dri2_dpy
= dri2_egl_display(disp
);
113 struct dri2_egl_config
*dri2_conf
= dri2_egl_config(conf
);
114 struct dri2_egl_surface
*dri2_surf
;
115 const __DRIconfig
*config
;
117 /* Make sure to calloc so all pointers
118 * are originally NULL.
120 dri2_surf
= calloc(1, sizeof *dri2_surf
);
123 _eglError(EGL_BAD_ALLOC
, "eglCreatePbufferSurface");
127 if (!dri2_init_surface(&dri2_surf
->base
, disp
, type
, conf
, attrib_list
, false))
128 goto cleanup_surface
;
130 config
= dri2_get_dri_config(dri2_conf
, type
,
131 dri2_surf
->base
.GLColorspace
);
134 _eglError(EGL_BAD_MATCH
, "Unsupported surfacetype/colorspace configuration");
135 goto cleanup_surface
;
138 dri2_surf
->dri_drawable
=
139 dri2_dpy
->image_driver
->createNewDrawable(dri2_dpy
->dri_screen
, config
,
141 if (dri2_surf
->dri_drawable
== NULL
) {
142 _eglError(EGL_BAD_ALLOC
, "image->createNewDrawable");
143 goto cleanup_surface
;
146 if (conf
->RedSize
== 5)
147 dri2_surf
->visual
= __DRI_IMAGE_FORMAT_RGB565
;
148 else if (conf
->AlphaSize
== 0)
149 dri2_surf
->visual
= __DRI_IMAGE_FORMAT_XRGB8888
;
151 dri2_surf
->visual
= __DRI_IMAGE_FORMAT_ARGB8888
;
153 return &dri2_surf
->base
;
161 surfaceless_destroy_surface(_EGLDriver
*drv
, _EGLDisplay
*disp
, _EGLSurface
*surf
)
163 struct dri2_egl_display
*dri2_dpy
= dri2_egl_display(disp
);
164 struct dri2_egl_surface
*dri2_surf
= dri2_egl_surface(surf
);
166 surfaceless_free_images(dri2_surf
);
168 dri2_dpy
->core
->destroyDrawable(dri2_surf
->dri_drawable
);
170 dri2_fini_surface(surf
);
176 dri2_surfaceless_create_pbuffer_surface(_EGLDriver
*drv
, _EGLDisplay
*disp
,
177 _EGLConfig
*conf
, const EGLint
*attrib_list
)
179 return dri2_surfaceless_create_surface(drv
, disp
, EGL_PBUFFER_BIT
, conf
,
184 surfaceless_swap_buffers(_EGLDriver
*drv
, _EGLDisplay
*disp
, _EGLSurface
*surf
)
186 assert(!surf
|| surf
->Type
== EGL_PBUFFER_BIT
);
188 /* From the EGL 1.5 spec:
189 * If surface is a [...] pbuffer surface, eglSwapBuffers has no effect.
195 surfaceless_add_configs_for_visuals(_EGLDriver
*drv
, _EGLDisplay
*dpy
)
197 struct dri2_egl_display
*dri2_dpy
= dri2_egl_display(dpy
);
198 static const struct {
199 const char *format_name
;
200 unsigned int rgba_masks
[4];
202 { "ARGB8888", { 0xff0000, 0xff00, 0xff, 0xff000000 } },
203 { "RGB888", { 0xff0000, 0xff00, 0xff, 0x0 } },
204 { "RGB565", { 0x00f800, 0x07e0, 0x1f, 0x0 } },
206 unsigned int format_count
[ARRAY_SIZE(visuals
)] = { 0 };
207 unsigned int config_count
= 0;
209 for (unsigned i
= 0; dri2_dpy
->driver_configs
[i
] != NULL
; i
++) {
210 for (unsigned j
= 0; j
< ARRAY_SIZE(visuals
); j
++) {
211 struct dri2_egl_config
*dri2_conf
;
213 dri2_conf
= dri2_add_config(dpy
, dri2_dpy
->driver_configs
[i
],
214 config_count
+ 1, EGL_PBUFFER_BIT
, NULL
,
215 visuals
[j
].rgba_masks
);
218 if (dri2_conf
->base
.ConfigID
== config_count
+ 1)
225 for (unsigned i
= 0; i
< ARRAY_SIZE(format_count
); i
++) {
226 if (!format_count
[i
]) {
227 _eglLog(_EGL_DEBUG
, "No DRI config supports native format %s",
228 visuals
[i
].format_name
);
232 return (config_count
!= 0);
235 static const struct dri2_egl_display_vtbl dri2_surfaceless_display_vtbl
= {
236 .create_pixmap_surface
= dri2_fallback_create_pixmap_surface
,
237 .create_pbuffer_surface
= dri2_surfaceless_create_pbuffer_surface
,
238 .destroy_surface
= surfaceless_destroy_surface
,
239 .create_image
= dri2_create_image_khr
,
240 .swap_buffers
= surfaceless_swap_buffers
,
241 .swap_buffers_with_damage
= dri2_fallback_swap_buffers_with_damage
,
242 .swap_buffers_region
= dri2_fallback_swap_buffers_region
,
243 .set_damage_region
= dri2_fallback_set_damage_region
,
244 .post_sub_buffer
= dri2_fallback_post_sub_buffer
,
245 .copy_buffers
= dri2_fallback_copy_buffers
,
246 .query_buffer_age
= dri2_fallback_query_buffer_age
,
247 .create_wayland_buffer_from_image
= dri2_fallback_create_wayland_buffer_from_image
,
248 .get_sync_values
= dri2_fallback_get_sync_values
,
249 .get_dri_drawable
= dri2_surface_get_dri_drawable
,
253 surfaceless_flush_front_buffer(__DRIdrawable
*driDrawable
, void *loaderPrivate
)
257 static const __DRIimageLoaderExtension image_loader_extension
= {
258 .base
= { __DRI_IMAGE_LOADER
, 1 },
259 .getBuffers
= surfaceless_image_get_buffers
,
260 .flushFrontBuffer
= surfaceless_flush_front_buffer
,
263 static const __DRIswrastLoaderExtension swrast_loader_extension
= {
264 .base
= { __DRI_SWRAST_LOADER
, 1 },
265 .getDrawableInfo
= NULL
,
270 #define DRM_RENDER_DEV_NAME "%s/renderD%d"
272 static const __DRIextension
*image_loader_extensions
[] = {
273 &image_loader_extension
.base
,
274 &image_lookup_extension
.base
,
275 &use_invalidate
.base
,
279 static const __DRIextension
*swrast_loader_extensions
[] = {
280 &swrast_loader_extension
.base
,
281 &image_loader_extension
.base
,
282 &image_lookup_extension
.base
,
283 &use_invalidate
.base
,
288 surfaceless_probe_device(_EGLDisplay
*dpy
, bool swrast
)
290 struct dri2_egl_display
*dri2_dpy
= dpy
->DriverData
;
291 const int limit
= 64;
292 const int base
= 128;
296 for (i
= 0; i
< limit
; ++i
) {
298 if (asprintf(&card_path
, DRM_RENDER_DEV_NAME
, DRM_DIR_NAME
, base
+ i
) < 0)
301 fd
= loader_open_device(card_path
);
307 dri2_dpy
->driver_name
= strdup("kms_swrast");
308 dri2_dpy
->loader_extensions
= swrast_loader_extensions
;
310 dri2_dpy
->driver_name
= loader_get_driver_for_fd(fd
);
311 dri2_dpy
->loader_extensions
= image_loader_extensions
;
313 if (!dri2_dpy
->driver_name
) {
319 if (dri2_load_driver_dri3(dpy
))
324 free(dri2_dpy
->driver_name
);
325 dri2_dpy
->driver_name
= NULL
;
326 dri2_dpy
->loader_extensions
= NULL
;
333 dri2_initialize_surfaceless(_EGLDriver
*drv
, _EGLDisplay
*disp
)
335 struct dri2_egl_display
*dri2_dpy
;
337 bool driver_loaded
= false;
339 loader_set_logger(_eglLog
);
341 dri2_dpy
= calloc(1, sizeof *dri2_dpy
);
343 return _eglError(EGL_BAD_ALLOC
, "eglInitialize");
346 disp
->DriverData
= (void *) dri2_dpy
;
348 if (!disp
->Options
.ForceSoftware
) {
349 driver_loaded
= surfaceless_probe_device(disp
, false);
351 _eglLog(_EGL_WARNING
,
352 "No hardware driver found, falling back to software rendering");
355 if (!driver_loaded
&& !surfaceless_probe_device(disp
, true)) {
356 err
= "DRI2: failed to load driver";
360 if (!dri2_create_screen(disp
)) {
361 err
= "DRI2: failed to create screen";
365 if (!dri2_setup_extensions(disp
)) {
366 err
= "DRI2: failed to find required DRI extensions";
370 dri2_setup_screen(disp
);
372 if (!surfaceless_add_configs_for_visuals(drv
, disp
)) {
373 err
= "DRI2: failed to add configs";
377 /* Fill vtbl last to prevent accidentally calling virtual function during
380 dri2_dpy
->vtbl
= &dri2_surfaceless_display_vtbl
;
385 dri2_display_destroy(disp
);
386 return _eglError(EGL_NOT_INITIALIZED
, err
);