2 * Mesa 3-D graphics library
4 * Copyright 2018 Collabora
6 * Based on platform_surfaceless, which has:
8 * Copyright (c) 2014 The Chromium OS Authors.
9 * Copyright © 2011 Intel Corporation
11 * Permission is hereby granted, free of charge, to any person obtaining a
12 * copy of this software and associated documentation files (the "Software"),
13 * to deal in the Software without restriction, including without limitation
14 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
15 * and/or sell copies of the Software, and to permit persons to whom the
16 * Software is furnished to do so, subject to the following conditions:
18 * The above copyright notice and this permission notice shall be included
19 * in all copies or substantial portions of the Software.
21 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
22 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
23 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
24 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
25 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
26 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
27 * DEALINGS IN THE SOFTWARE.
37 #include <sys/types.h>
43 #include "egl_dri2_fallbacks.h"
47 device_alloc_image(struct dri2_egl_display
*dri2_dpy
,
48 struct dri2_egl_surface
*dri2_surf
)
50 return dri2_dpy
->image
->createImage(
52 dri2_surf
->base
.Width
,
53 dri2_surf
->base
.Height
,
60 device_free_images(struct dri2_egl_surface
*dri2_surf
)
62 struct dri2_egl_display
*dri2_dpy
=
63 dri2_egl_display(dri2_surf
->base
.Resource
.Display
);
65 if (dri2_surf
->front
) {
66 dri2_dpy
->image
->destroyImage(dri2_surf
->front
);
67 dri2_surf
->front
= NULL
;
70 free(dri2_surf
->swrast_device_buffer
);
71 dri2_surf
->swrast_device_buffer
= NULL
;
75 device_image_get_buffers(__DRIdrawable
*driDrawable
,
80 struct __DRIimageList
*buffers
)
82 struct dri2_egl_surface
*dri2_surf
= loaderPrivate
;
83 struct dri2_egl_display
*dri2_dpy
=
84 dri2_egl_display(dri2_surf
->base
.Resource
.Display
);
86 buffers
->image_mask
= 0;
87 buffers
->front
= NULL
;
90 /* The EGL 1.5 spec states that pbuffers are single-buffered. Specifically,
91 * the spec states that they have a back buffer but no front buffer, in
92 * contrast to pixmaps, which have a front buffer but no back buffer.
94 * Single-buffered surfaces with no front buffer confuse Mesa; so we deviate
95 * from the spec, following the precedent of Mesa's EGL X11 platform. The
96 * X11 platform correctly assigns pbuffers to single-buffered configs, but
97 * assigns the pbuffer a front buffer instead of a back buffer.
99 * Pbuffers in the X11 platform mostly work today, so let's just copy its
100 * behavior instead of trying to fix (and hence potentially breaking) the
104 if (buffer_mask
& __DRI_IMAGE_BUFFER_FRONT
) {
106 if (!dri2_surf
->front
)
108 device_alloc_image(dri2_dpy
, dri2_surf
);
110 buffers
->image_mask
|= __DRI_IMAGE_BUFFER_FRONT
;
111 buffers
->front
= dri2_surf
->front
;
118 dri2_device_create_surface(_EGLDriver
*drv
, _EGLDisplay
*disp
, EGLint type
,
119 _EGLConfig
*conf
, const EGLint
*attrib_list
)
121 struct dri2_egl_display
*dri2_dpy
= dri2_egl_display(disp
);
122 struct dri2_egl_config
*dri2_conf
= dri2_egl_config(conf
);
123 struct dri2_egl_surface
*dri2_surf
;
124 const __DRIconfig
*config
;
126 /* Make sure to calloc so all pointers
127 * are originally NULL.
129 dri2_surf
= calloc(1, sizeof *dri2_surf
);
132 _eglError(EGL_BAD_ALLOC
, "eglCreatePbufferSurface");
136 if (!dri2_init_surface(&dri2_surf
->base
, disp
, type
, conf
, attrib_list
,
138 goto cleanup_surface
;
140 config
= dri2_get_dri_config(dri2_conf
, type
,
141 dri2_surf
->base
.GLColorspace
);
144 _eglError(EGL_BAD_MATCH
, "Unsupported surfacetype/colorspace configuration");
145 goto cleanup_surface
;
148 dri2_surf
->visual
= dri2_image_format_for_pbuffer_config(dri2_dpy
, config
);
149 if (dri2_surf
->visual
== __DRI_IMAGE_FORMAT_NONE
)
150 goto cleanup_surface
;
152 if (!dri2_create_drawable(dri2_dpy
, config
, dri2_surf
, dri2_surf
))
153 goto cleanup_surface
;
155 return &dri2_surf
->base
;
163 device_destroy_surface(_EGLDriver
*drv
, _EGLDisplay
*disp
, _EGLSurface
*surf
)
165 struct dri2_egl_display
*dri2_dpy
= dri2_egl_display(disp
);
166 struct dri2_egl_surface
*dri2_surf
= dri2_egl_surface(surf
);
168 device_free_images(dri2_surf
);
170 dri2_dpy
->core
->destroyDrawable(dri2_surf
->dri_drawable
);
172 dri2_fini_surface(surf
);
178 dri2_device_create_pbuffer_surface(_EGLDriver
*drv
, _EGLDisplay
*disp
,
179 _EGLConfig
*conf
, const EGLint
*attrib_list
)
181 return dri2_device_create_surface(drv
, disp
, EGL_PBUFFER_BIT
, conf
,
185 static const struct dri2_egl_display_vtbl dri2_device_display_vtbl
= {
186 .create_pbuffer_surface
= dri2_device_create_pbuffer_surface
,
187 .destroy_surface
= device_destroy_surface
,
188 .create_image
= dri2_create_image_khr
,
189 .copy_buffers
= dri2_fallback_copy_buffers
,
190 .query_buffer_age
= dri2_fallback_query_buffer_age
,
191 .create_wayland_buffer_from_image
= dri2_fallback_create_wayland_buffer_from_image
,
192 .get_sync_values
= dri2_fallback_get_sync_values
,
193 .get_dri_drawable
= dri2_surface_get_dri_drawable
,
197 device_flush_front_buffer(__DRIdrawable
*driDrawable
, void *loaderPrivate
)
201 static const __DRIimageLoaderExtension image_loader_extension
= {
202 .base
= { __DRI_IMAGE_LOADER
, 1 },
203 .getBuffers
= device_image_get_buffers
,
204 .flushFrontBuffer
= device_flush_front_buffer
,
207 static const __DRIextension
*image_loader_extensions
[] = {
208 &image_loader_extension
.base
,
209 &image_lookup_extension
.base
,
210 &use_invalidate
.base
,
214 static const __DRIextension
*swrast_loader_extensions
[] = {
215 &swrast_pbuffer_loader_extension
.base
,
216 &image_lookup_extension
.base
,
217 &use_invalidate
.base
,
222 device_get_fd(_EGLDisplay
*disp
, _EGLDevice
*dev
)
225 int fd
= disp
->Options
.fd
;
226 /* The fcntl() code in _eglGetDeviceDisplay() ensures that valid fd >= 3,
227 * and invalid one is 0.
230 /* According to the spec - if the FD does not match the EGLDevice
231 * behaviour is undefined.
233 * Add a trivial sanity check since it doesn't cost us anything.
235 if (dev
!= _eglAddDevice(fd
, false))
238 /* No EGL_EXT_output* extensions are supported, hence no master perms
239 * are needed. Get the render one - otherwise drivers might error out.
241 char *node
= drmGetRenderDeviceNameFromFd(fd
);
243 /* Don't close the internal fd, get render node one based on it. */
244 fd
= loader_open_device(node
);
248 const char *node
= _eglGetDRMDeviceRenderNode(dev
);
249 return loader_open_device(node
);
251 _eglLog(_EGL_FATAL
, "Driver bug: Built without libdrm, yet using a HW device");
257 device_probe_device(_EGLDisplay
*disp
)
259 struct dri2_egl_display
*dri2_dpy
= disp
->DriverData
;
261 if (disp
->Options
.ForceSoftware
)
262 _eglLog(_EGL_WARNING
, "Not allowed to force software rendering when "
263 "API explicitly selects a hardware device.");
264 dri2_dpy
->fd
= device_get_fd(disp
, disp
->Device
);
265 if (dri2_dpy
->fd
< 0)
268 dri2_dpy
->driver_name
= loader_get_driver_for_fd(dri2_dpy
->fd
);
269 if (!dri2_dpy
->driver_name
)
272 if (!dri2_load_driver_dri3(disp
))
275 dri2_dpy
->loader_extensions
= image_loader_extensions
;
279 free(dri2_dpy
->driver_name
);
280 dri2_dpy
->driver_name
= NULL
;
290 device_probe_device_sw(_EGLDisplay
*disp
)
292 struct dri2_egl_display
*dri2_dpy
= disp
->DriverData
;
295 dri2_dpy
->driver_name
= strdup("swrast");
296 if (!dri2_dpy
->driver_name
)
299 /* HACK: should be driver_swrast_null */
300 if (!dri2_load_driver_swrast(disp
)) {
301 free(dri2_dpy
->driver_name
);
302 dri2_dpy
->driver_name
= NULL
;
306 dri2_dpy
->loader_extensions
= swrast_loader_extensions
;
311 dri2_initialize_device(_EGLDriver
*drv
, _EGLDisplay
*disp
)
314 struct dri2_egl_display
*dri2_dpy
;
317 dri2_dpy
= calloc(1, sizeof *dri2_dpy
);
319 return _eglError(EGL_BAD_ALLOC
, "eglInitialize");
321 /* Extension requires a PlatformDisplay - the EGLDevice. */
322 dev
= disp
->PlatformDisplay
;
326 disp
->DriverData
= (void *) dri2_dpy
;
327 err
= "DRI2: failed to load driver";
328 if (_eglDeviceSupports(dev
, _EGL_DEVICE_DRM
)) {
329 if (!device_probe_device(disp
))
331 } else if (_eglDeviceSupports(dev
, _EGL_DEVICE_SOFTWARE
)) {
332 if (!device_probe_device_sw(disp
))
335 _eglLog(_EGL_FATAL
, "Driver bug: exposed device is neither DRM nor SOFTWARE one");
339 if (!dri2_create_screen(disp
)) {
340 err
= "DRI2: failed to create screen";
344 if (!dri2_setup_extensions(disp
)) {
345 err
= "DRI2: failed to find required DRI extensions";
349 dri2_setup_screen(disp
);
351 if (!dri2_add_pbuffer_configs_for_visuals(drv
, disp
)) {
352 err
= "DRI2: failed to add configs";
356 /* Fill vtbl last to prevent accidentally calling virtual function during
359 dri2_dpy
->vtbl
= &dri2_device_display_vtbl
;
364 dri2_display_destroy(disp
);
365 return _eglError(EGL_NOT_INITIALIZED
, err
);