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 goto cleanup_surface
;
136 dri2_surf
->dri_drawable
=
137 dri2_dpy
->image_driver
->createNewDrawable(dri2_dpy
->dri_screen
, config
,
139 if (dri2_surf
->dri_drawable
== NULL
) {
140 _eglError(EGL_BAD_ALLOC
, "image->createNewDrawable");
141 goto cleanup_surface
;
144 if (conf
->RedSize
== 5)
145 dri2_surf
->visual
= __DRI_IMAGE_FORMAT_RGB565
;
146 else if (conf
->AlphaSize
== 0)
147 dri2_surf
->visual
= __DRI_IMAGE_FORMAT_XRGB8888
;
149 dri2_surf
->visual
= __DRI_IMAGE_FORMAT_ARGB8888
;
151 return &dri2_surf
->base
;
159 surfaceless_destroy_surface(_EGLDriver
*drv
, _EGLDisplay
*disp
, _EGLSurface
*surf
)
161 struct dri2_egl_display
*dri2_dpy
= dri2_egl_display(disp
);
162 struct dri2_egl_surface
*dri2_surf
= dri2_egl_surface(surf
);
164 surfaceless_free_images(dri2_surf
);
166 dri2_dpy
->core
->destroyDrawable(dri2_surf
->dri_drawable
);
168 dri2_fini_surface(surf
);
174 dri2_surfaceless_create_pbuffer_surface(_EGLDriver
*drv
, _EGLDisplay
*disp
,
175 _EGLConfig
*conf
, const EGLint
*attrib_list
)
177 return dri2_surfaceless_create_surface(drv
, disp
, EGL_PBUFFER_BIT
, conf
,
182 surfaceless_swap_buffers(_EGLDriver
*drv
, _EGLDisplay
*disp
, _EGLSurface
*surf
)
184 assert(!surf
|| surf
->Type
== EGL_PBUFFER_BIT
);
186 /* From the EGL 1.5 spec:
187 * If surface is a [...] pbuffer surface, eglSwapBuffers has no effect.
193 surfaceless_add_configs_for_visuals(_EGLDriver
*drv
, _EGLDisplay
*dpy
)
195 struct dri2_egl_display
*dri2_dpy
= dri2_egl_display(dpy
);
196 static const struct {
197 const char *format_name
;
198 unsigned int rgba_masks
[4];
200 { "ARGB8888", { 0xff0000, 0xff00, 0xff, 0xff000000 } },
201 { "RGB888", { 0xff0000, 0xff00, 0xff, 0x0 } },
202 { "RGB565", { 0x00f800, 0x07e0, 0x1f, 0x0 } },
204 unsigned int format_count
[ARRAY_SIZE(visuals
)] = { 0 };
205 unsigned int config_count
= 0;
207 for (unsigned i
= 0; dri2_dpy
->driver_configs
[i
] != NULL
; i
++) {
208 for (unsigned j
= 0; j
< ARRAY_SIZE(visuals
); j
++) {
209 struct dri2_egl_config
*dri2_conf
;
211 dri2_conf
= dri2_add_config(dpy
, dri2_dpy
->driver_configs
[i
],
212 config_count
+ 1, EGL_PBUFFER_BIT
, NULL
,
213 visuals
[j
].rgba_masks
);
216 if (dri2_conf
->base
.ConfigID
== config_count
+ 1)
223 for (unsigned i
= 0; i
< ARRAY_SIZE(format_count
); i
++) {
224 if (!format_count
[i
]) {
225 _eglLog(_EGL_DEBUG
, "No DRI config supports native format %s",
226 visuals
[i
].format_name
);
230 return (config_count
!= 0);
233 static const struct dri2_egl_display_vtbl dri2_surfaceless_display_vtbl
= {
234 .create_pixmap_surface
= dri2_fallback_create_pixmap_surface
,
235 .create_pbuffer_surface
= dri2_surfaceless_create_pbuffer_surface
,
236 .destroy_surface
= surfaceless_destroy_surface
,
237 .create_image
= dri2_create_image_khr
,
238 .swap_buffers
= surfaceless_swap_buffers
,
239 .swap_buffers_with_damage
= dri2_fallback_swap_buffers_with_damage
,
240 .swap_buffers_region
= dri2_fallback_swap_buffers_region
,
241 .set_damage_region
= dri2_fallback_set_damage_region
,
242 .post_sub_buffer
= dri2_fallback_post_sub_buffer
,
243 .copy_buffers
= dri2_fallback_copy_buffers
,
244 .query_buffer_age
= dri2_fallback_query_buffer_age
,
245 .create_wayland_buffer_from_image
= dri2_fallback_create_wayland_buffer_from_image
,
246 .get_sync_values
= dri2_fallback_get_sync_values
,
247 .get_dri_drawable
= dri2_surface_get_dri_drawable
,
251 surfaceless_flush_front_buffer(__DRIdrawable
*driDrawable
, void *loaderPrivate
)
255 static const __DRIimageLoaderExtension image_loader_extension
= {
256 .base
= { __DRI_IMAGE_LOADER
, 1 },
257 .getBuffers
= surfaceless_image_get_buffers
,
258 .flushFrontBuffer
= surfaceless_flush_front_buffer
,
261 #define DRM_RENDER_DEV_NAME "%s/renderD%d"
263 static const __DRIextension
*image_loader_extensions
[] = {
264 &image_loader_extension
.base
,
265 &image_lookup_extension
.base
,
266 &use_invalidate
.base
,
271 surfaceless_probe_device(_EGLDisplay
*dpy
, bool swrast
)
273 struct dri2_egl_display
*dri2_dpy
= dpy
->DriverData
;
274 const int limit
= 64;
275 const int base
= 128;
279 for (i
= 0; i
< limit
; ++i
) {
281 if (asprintf(&card_path
, DRM_RENDER_DEV_NAME
, DRM_DIR_NAME
, base
+ i
) < 0)
284 fd
= loader_open_device(card_path
);
290 dri2_dpy
->driver_name
= strdup("kms_swrast");
292 dri2_dpy
->driver_name
= loader_get_driver_for_fd(fd
);
293 if (!dri2_dpy
->driver_name
) {
299 if (dri2_load_driver_dri3(dpy
))
304 free(dri2_dpy
->driver_name
);
305 dri2_dpy
->driver_name
= NULL
;
312 dri2_initialize_surfaceless(_EGLDriver
*drv
, _EGLDisplay
*disp
)
314 struct dri2_egl_display
*dri2_dpy
;
316 bool driver_loaded
= false;
318 loader_set_logger(_eglLog
);
320 dri2_dpy
= calloc(1, sizeof *dri2_dpy
);
322 return _eglError(EGL_BAD_ALLOC
, "eglInitialize");
325 disp
->DriverData
= (void *) dri2_dpy
;
327 if (!disp
->Options
.ForceSoftware
) {
328 driver_loaded
= surfaceless_probe_device(disp
, false);
330 _eglLog(_EGL_WARNING
,
331 "No hardware driver found, falling back to software rendering");
334 if (!driver_loaded
&& !surfaceless_probe_device(disp
, true)) {
335 err
= "DRI2: failed to load driver";
339 dri2_dpy
->loader_extensions
= image_loader_extensions
;
341 if (!dri2_create_screen(disp
)) {
342 err
= "DRI2: failed to create screen";
346 if (!dri2_setup_extensions(disp
)) {
347 err
= "DRI2: failed to find required DRI extensions";
351 dri2_setup_screen(disp
);
353 if (!surfaceless_add_configs_for_visuals(drv
, disp
)) {
354 err
= "DRI2: failed to add configs";
358 /* Fill vtbl last to prevent accidentally calling virtual function during
361 dri2_dpy
->vtbl
= &dri2_surfaceless_display_vtbl
;
366 dri2_display_destroy(disp
);
367 return _eglError(EGL_NOT_INITIALIZED
, err
);