egl: Enable 10bpc EGLConfigs for platform_{device,surfaceless}
[mesa.git] / src / egl / drivers / dri2 / platform_surfaceless.c
1 /*
2 * Mesa 3-D graphics library
3 *
4 * Copyright (c) 2014 The Chromium OS Authors.
5 * Copyright © 2011 Intel Corporation
6 *
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:
13 *
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
16 *
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.
24 */
25
26 #include <stdlib.h>
27 #include <stdio.h>
28 #include <string.h>
29 #include <xf86drm.h>
30 #include <dlfcn.h>
31 #include <sys/types.h>
32 #include <sys/stat.h>
33 #include <fcntl.h>
34 #include <unistd.h>
35
36 #include "egl_dri2.h"
37 #include "egl_dri2_fallbacks.h"
38 #include "loader.h"
39
40 static __DRIimage*
41 surfaceless_alloc_image(struct dri2_egl_display *dri2_dpy,
42 struct dri2_egl_surface *dri2_surf)
43 {
44 return dri2_dpy->image->createImage(
45 dri2_dpy->dri_screen,
46 dri2_surf->base.Width,
47 dri2_surf->base.Height,
48 dri2_surf->visual,
49 0,
50 NULL);
51 }
52
53 static void
54 surfaceless_free_images(struct dri2_egl_surface *dri2_surf)
55 {
56 struct dri2_egl_display *dri2_dpy =
57 dri2_egl_display(dri2_surf->base.Resource.Display);
58
59 if (dri2_surf->front) {
60 dri2_dpy->image->destroyImage(dri2_surf->front);
61 dri2_surf->front = NULL;
62 }
63 }
64
65 static int
66 surfaceless_image_get_buffers(__DRIdrawable *driDrawable,
67 unsigned int format,
68 uint32_t *stamp,
69 void *loaderPrivate,
70 uint32_t buffer_mask,
71 struct __DRIimageList *buffers)
72 {
73 struct dri2_egl_surface *dri2_surf = loaderPrivate;
74 struct dri2_egl_display *dri2_dpy =
75 dri2_egl_display(dri2_surf->base.Resource.Display);
76
77 buffers->image_mask = 0;
78 buffers->front = NULL;
79 buffers->back = NULL;
80
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.
84 *
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.
89 *
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
92 * world.
93 */
94
95 if (buffer_mask & __DRI_IMAGE_BUFFER_FRONT) {
96
97 if (!dri2_surf->front)
98 dri2_surf->front =
99 surfaceless_alloc_image(dri2_dpy, dri2_surf);
100
101 buffers->image_mask |= __DRI_IMAGE_BUFFER_FRONT;
102 buffers->front = dri2_surf->front;
103 }
104
105 return 1;
106 }
107
108 static _EGLSurface *
109 dri2_surfaceless_create_surface(_EGLDriver *drv, _EGLDisplay *disp, EGLint type,
110 _EGLConfig *conf, const EGLint *attrib_list)
111 {
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;
116
117 /* Make sure to calloc so all pointers
118 * are originally NULL.
119 */
120 dri2_surf = calloc(1, sizeof *dri2_surf);
121
122 if (!dri2_surf) {
123 _eglError(EGL_BAD_ALLOC, "eglCreatePbufferSurface");
124 return NULL;
125 }
126
127 if (!dri2_init_surface(&dri2_surf->base, disp, type, conf, attrib_list,
128 false, NULL))
129 goto cleanup_surface;
130
131 config = dri2_get_dri_config(dri2_conf, type,
132 dri2_surf->base.GLColorspace);
133
134 if (!config) {
135 _eglError(EGL_BAD_MATCH, "Unsupported surfacetype/colorspace configuration");
136 goto cleanup_surface;
137 }
138
139 if (!dri2_create_drawable(dri2_dpy, config, dri2_surf, dri2_surf))
140 goto cleanup_surface;
141
142 if (conf->RedSize == 5)
143 dri2_surf->visual = __DRI_IMAGE_FORMAT_RGB565;
144 else if (conf->AlphaSize == 0)
145 dri2_surf->visual = __DRI_IMAGE_FORMAT_XRGB8888;
146 else
147 dri2_surf->visual = __DRI_IMAGE_FORMAT_ARGB8888;
148
149 return &dri2_surf->base;
150
151 cleanup_surface:
152 free(dri2_surf);
153 return NULL;
154 }
155
156 static EGLBoolean
157 surfaceless_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
158 {
159 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
160 struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
161
162 surfaceless_free_images(dri2_surf);
163
164 dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
165
166 dri2_fini_surface(surf);
167 free(dri2_surf);
168 return EGL_TRUE;
169 }
170
171 static _EGLSurface *
172 dri2_surfaceless_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *disp,
173 _EGLConfig *conf, const EGLint *attrib_list)
174 {
175 return dri2_surfaceless_create_surface(drv, disp, EGL_PBUFFER_BIT, conf,
176 attrib_list);
177 }
178
179 static EGLBoolean
180 surfaceless_add_configs_for_visuals(_EGLDriver *drv, _EGLDisplay *disp)
181 {
182 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
183 static const struct {
184 const char *format_name;
185 int rgba_shifts[4];
186 unsigned int rgba_sizes[4];
187 } visuals[] = {
188 { "A2RGB10", { 20, 10, 0, 30 }, { 10, 10, 10, 2 } },
189 { "X2RGB10", { 20, 10, 0, -1 }, { 10, 10, 10, 0 } },
190 { "ARGB8888", { 16, 8, 0, 24 }, { 8, 8, 8, 8 } },
191 { "RGB888", { 16, 8, 0, -1 }, { 8, 8, 8, 0 } },
192 { "RGB565", { 11, 5, 0, -1 }, { 5, 6, 5, 0 } },
193 };
194 unsigned int format_count[ARRAY_SIZE(visuals)] = { 0 };
195 unsigned int config_count = 0;
196
197 for (unsigned i = 0; dri2_dpy->driver_configs[i] != NULL; i++) {
198 for (unsigned j = 0; j < ARRAY_SIZE(visuals); j++) {
199 struct dri2_egl_config *dri2_conf;
200
201 dri2_conf = dri2_add_config(disp, dri2_dpy->driver_configs[i],
202 config_count + 1, EGL_PBUFFER_BIT, NULL,
203 visuals[j].rgba_shifts, visuals[j].rgba_sizes);
204
205 if (dri2_conf) {
206 if (dri2_conf->base.ConfigID == config_count + 1)
207 config_count++;
208 format_count[j]++;
209 }
210 }
211 }
212
213 for (unsigned i = 0; i < ARRAY_SIZE(format_count); i++) {
214 if (!format_count[i]) {
215 _eglLog(_EGL_DEBUG, "No DRI config supports native format %s",
216 visuals[i].format_name);
217 }
218 }
219
220 return (config_count != 0);
221 }
222
223 static const struct dri2_egl_display_vtbl dri2_surfaceless_display_vtbl = {
224 .create_pixmap_surface = dri2_fallback_create_pixmap_surface,
225 .create_pbuffer_surface = dri2_surfaceless_create_pbuffer_surface,
226 .destroy_surface = surfaceless_destroy_surface,
227 .create_image = dri2_create_image_khr,
228 .swap_buffers_region = dri2_fallback_swap_buffers_region,
229 .post_sub_buffer = dri2_fallback_post_sub_buffer,
230 .copy_buffers = dri2_fallback_copy_buffers,
231 .query_buffer_age = dri2_fallback_query_buffer_age,
232 .create_wayland_buffer_from_image = dri2_fallback_create_wayland_buffer_from_image,
233 .get_sync_values = dri2_fallback_get_sync_values,
234 .get_dri_drawable = dri2_surface_get_dri_drawable,
235 };
236
237 static void
238 surfaceless_flush_front_buffer(__DRIdrawable *driDrawable, void *loaderPrivate)
239 {
240 }
241
242 static const __DRIimageLoaderExtension image_loader_extension = {
243 .base = { __DRI_IMAGE_LOADER, 1 },
244 .getBuffers = surfaceless_image_get_buffers,
245 .flushFrontBuffer = surfaceless_flush_front_buffer,
246 };
247
248 static const __DRIextension *image_loader_extensions[] = {
249 &image_loader_extension.base,
250 &image_lookup_extension.base,
251 &use_invalidate.base,
252 NULL,
253 };
254
255 static const __DRIextension *swrast_loader_extensions[] = {
256 &swrast_pbuffer_loader_extension.base,
257 &image_loader_extension.base,
258 &image_lookup_extension.base,
259 &use_invalidate.base,
260 NULL,
261 };
262
263 static bool
264 surfaceless_probe_device(_EGLDisplay *disp, bool swrast)
265 {
266 #define MAX_DRM_DEVICES 64
267 const unsigned node_type = swrast ? DRM_NODE_PRIMARY : DRM_NODE_RENDER;
268 struct dri2_egl_display *dri2_dpy = disp->DriverData;
269 drmDevicePtr device, devices[MAX_DRM_DEVICES] = { NULL };
270 int i, num_devices;
271
272 num_devices = drmGetDevices2(0, devices, ARRAY_SIZE(devices));
273 if (num_devices < 0)
274 return false;
275
276 for (i = 0; i < num_devices; ++i) {
277 device = devices[i];
278
279 if (!(device->available_nodes & (1 << node_type)))
280 continue;
281
282 dri2_dpy->fd = loader_open_device(device->nodes[node_type]);
283 if (dri2_dpy->fd < 0)
284 continue;
285
286 disp->Device = _eglAddDevice(dri2_dpy->fd, swrast);
287 if (!disp->Device) {
288 close(dri2_dpy->fd);
289 dri2_dpy->fd = -1;
290 continue;
291 }
292
293 char *driver_name = loader_get_driver_for_fd(dri2_dpy->fd);
294 if (swrast) {
295 /* Use kms swrast only with vgem / virtio_gpu.
296 * virtio-gpu fallbacks to software rendering when 3D features
297 * are unavailable since 6c5ab, and kms_swrast is more
298 * feature complete than swrast.
299 */
300 if (driver_name &&
301 (strcmp(driver_name, "vgem") == 0 ||
302 strcmp(driver_name, "virtio_gpu") == 0))
303 dri2_dpy->driver_name = strdup("kms_swrast");
304 free(driver_name);
305 } else {
306 /* Use the given hardware driver */
307 dri2_dpy->driver_name = driver_name;
308 }
309
310 if (dri2_dpy->driver_name && dri2_load_driver_dri3(disp))
311 break;
312
313 free(dri2_dpy->driver_name);
314 dri2_dpy->driver_name = NULL;
315 close(dri2_dpy->fd);
316 dri2_dpy->fd = -1;
317 }
318 drmFreeDevices(devices, num_devices);
319
320 if (i == num_devices)
321 return false;
322
323 if (swrast)
324 dri2_dpy->loader_extensions = swrast_loader_extensions;
325 else
326 dri2_dpy->loader_extensions = image_loader_extensions;
327
328 return true;
329 }
330
331 static bool
332 surfaceless_probe_device_sw(_EGLDisplay *disp)
333 {
334 struct dri2_egl_display *dri2_dpy = disp->DriverData;
335
336 dri2_dpy->fd = -1;
337 disp->Device = _eglAddDevice(dri2_dpy->fd, true);
338 assert(disp->Device);
339
340 dri2_dpy->driver_name = strdup("swrast");
341 if (!dri2_dpy->driver_name)
342 return false;
343
344 if (!dri2_load_driver_swrast(disp)) {
345 free(dri2_dpy->driver_name);
346 dri2_dpy->driver_name = NULL;
347 return false;
348 }
349
350 dri2_dpy->loader_extensions = swrast_loader_extensions;
351 return true;
352 }
353
354 EGLBoolean
355 dri2_initialize_surfaceless(_EGLDriver *drv, _EGLDisplay *disp)
356 {
357 struct dri2_egl_display *dri2_dpy;
358 const char* err;
359 bool driver_loaded = false;
360
361 dri2_dpy = calloc(1, sizeof *dri2_dpy);
362 if (!dri2_dpy)
363 return _eglError(EGL_BAD_ALLOC, "eglInitialize");
364
365 dri2_dpy->fd = -1;
366 disp->DriverData = (void *) dri2_dpy;
367
368 if (!disp->Options.ForceSoftware) {
369 driver_loaded = surfaceless_probe_device(disp, false);
370 if (!driver_loaded)
371 _eglLog(_EGL_WARNING,
372 "No hardware driver found, falling back to software rendering");
373 }
374
375 if (!driver_loaded)
376 driver_loaded = surfaceless_probe_device(disp, true);
377
378 if (!driver_loaded) {
379 _eglLog(_EGL_DEBUG, "Falling back to surfaceless swrast without DRM.");
380 if (!surfaceless_probe_device_sw(disp)) {
381 err = "DRI2: failed to load driver";
382 goto cleanup;
383 }
384 }
385
386 if (!dri2_create_screen(disp)) {
387 err = "DRI2: failed to create screen";
388 goto cleanup;
389 }
390
391 if (!dri2_setup_extensions(disp)) {
392 err = "DRI2: failed to find required DRI extensions";
393 goto cleanup;
394 }
395
396 dri2_setup_screen(disp);
397
398 if (!surfaceless_add_configs_for_visuals(drv, disp)) {
399 err = "DRI2: failed to add configs";
400 goto cleanup;
401 }
402
403 /* Fill vtbl last to prevent accidentally calling virtual function during
404 * initialization.
405 */
406 dri2_dpy->vtbl = &dri2_surfaceless_display_vtbl;
407
408 return EGL_TRUE;
409
410 cleanup:
411 dri2_display_destroy(disp);
412 return _eglError(EGL_NOT_INITIALIZED, err);
413 }