2 * Copyright (C) 2015-2016 Gerd Hoffmann <kraxel@redhat.com>
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
17 #include "qemu/osdep.h"
19 #include "qemu/error-report.h"
20 #include "ui/console.h"
21 #include "ui/egl-helpers.h"
22 #include "sysemu/sysemu.h"
23 #include "qapi/error.h"
25 EGLDisplay *qemu_egl_display;
26 EGLConfig qemu_egl_config;
27 DisplayGLMode qemu_egl_mode;
29 /* ------------------------------------------------------------------ */
31 #if defined(CONFIG_X11) || defined(CONFIG_GBM)
32 static const char *egl_get_error_string(void)
34 EGLint error = eglGetError();
39 case EGL_NOT_INITIALIZED:
40 return "EGL_NOT_INITIALIZED";
42 return "EGL_BAD_ACCESS";
44 return "EGL_BAD_ALLOC";
45 case EGL_BAD_ATTRIBUTE:
46 return "EGL_BAD_ATTRIBUTE";
48 return "EGL_BAD_CONTEXT";
50 return "EGL_BAD_CONFIG";
51 case EGL_BAD_CURRENT_SURFACE:
52 return "EGL_BAD_CURRENT_SURFACE";
54 return "EGL_BAD_DISPLAY";
56 return "EGL_BAD_SURFACE";
58 return "EGL_BAD_MATCH";
59 case EGL_BAD_PARAMETER:
60 return "EGL_BAD_PARAMETER";
61 case EGL_BAD_NATIVE_PIXMAP:
62 return "EGL_BAD_NATIVE_PIXMAP";
63 case EGL_BAD_NATIVE_WINDOW:
64 return "EGL_BAD_NATIVE_WINDOW";
65 case EGL_CONTEXT_LOST:
66 return "EGL_CONTEXT_LOST";
68 return "Unknown EGL error";
73 static void egl_fb_delete_texture(egl_fb *fb)
75 if (!fb->delete_texture) {
79 glDeleteTextures(1, &fb->texture);
80 fb->delete_texture = false;
83 void egl_fb_destroy(egl_fb *fb)
85 if (!fb->framebuffer) {
89 egl_fb_delete_texture(fb);
90 glDeleteFramebuffers(1, &fb->framebuffer);
98 void egl_fb_setup_default(egl_fb *fb, int width, int height)
102 fb->framebuffer = 0; /* default framebuffer */
105 void egl_fb_setup_for_tex(egl_fb *fb, int width, int height,
106 GLuint texture, bool delete)
108 egl_fb_delete_texture(fb);
112 fb->texture = texture;
113 fb->delete_texture = delete;
114 if (!fb->framebuffer) {
115 glGenFramebuffers(1, &fb->framebuffer);
118 glBindFramebuffer(GL_FRAMEBUFFER_EXT, fb->framebuffer);
119 glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
120 GL_TEXTURE_2D, fb->texture, 0);
123 void egl_fb_setup_new_tex(egl_fb *fb, int width, int height)
127 glGenTextures(1, &texture);
128 glBindTexture(GL_TEXTURE_2D, texture);
129 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height,
130 0, GL_BGRA, GL_UNSIGNED_BYTE, 0);
132 egl_fb_setup_for_tex(fb, width, height, texture, true);
135 void egl_fb_blit(egl_fb *dst, egl_fb *src, bool flip)
140 GLuint w = src->width;
141 GLuint h = src->height;
143 glBindFramebuffer(GL_READ_FRAMEBUFFER, src->framebuffer);
144 glBindFramebuffer(GL_DRAW_FRAMEBUFFER, dst->framebuffer);
145 glViewport(0, 0, dst->width, dst->height);
150 w = src->dmabuf->scanout_width;
151 h = src->dmabuf->scanout_height;
154 w = (x1 + w) > src->width ? src->width - x1 : w;
155 h = (y1 + h) > src->height ? src->height - y1 : h;
157 y2 = flip ? y1 : h + y1;
158 y1 = flip ? h + y1 : y1;
161 glBlitFramebuffer(x1, y1, x2, y2,
162 0, 0, dst->width, dst->height,
163 GL_COLOR_BUFFER_BIT, GL_LINEAR);
166 void egl_fb_read(DisplaySurface *dst, egl_fb *src)
168 glBindFramebuffer(GL_READ_FRAMEBUFFER, src->framebuffer);
169 glReadBuffer(GL_COLOR_ATTACHMENT0_EXT);
170 glReadPixels(0, 0, surface_width(dst), surface_height(dst),
171 GL_BGRA, GL_UNSIGNED_BYTE, surface_data(dst));
174 void egl_texture_blit(QemuGLShader *gls, egl_fb *dst, egl_fb *src, bool flip)
176 glBindFramebuffer(GL_FRAMEBUFFER_EXT, dst->framebuffer);
177 glViewport(0, 0, dst->width, dst->height);
178 glEnable(GL_TEXTURE_2D);
179 glBindTexture(GL_TEXTURE_2D, src->texture);
180 qemu_gl_run_texture_blit(gls, flip);
183 void egl_texture_blend(QemuGLShader *gls, egl_fb *dst, egl_fb *src, bool flip,
184 int x, int y, double scale_x, double scale_y)
186 glBindFramebuffer(GL_FRAMEBUFFER_EXT, dst->framebuffer);
187 int w = scale_x * src->width;
188 int h = scale_y * src->height;
190 glViewport(x, y, w, h);
192 glViewport(x, dst->height - h - y, w, h);
194 glEnable(GL_TEXTURE_2D);
195 glBindTexture(GL_TEXTURE_2D, src->texture);
197 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
198 qemu_gl_run_texture_blit(gls, flip);
202 /* ---------------------------------------------------------------------- */
207 struct gbm_device *qemu_egl_rn_gbm_dev;
208 EGLContext qemu_egl_rn_ctx;
210 int egl_rendernode_init(const char *rendernode, DisplayGLMode mode)
215 qemu_egl_rn_fd = qemu_drm_rendernode_open(rendernode);
216 if (qemu_egl_rn_fd == -1) {
217 error_report("egl: no drm render node available");
221 qemu_egl_rn_gbm_dev = gbm_create_device(qemu_egl_rn_fd);
222 if (!qemu_egl_rn_gbm_dev) {
223 error_report("egl: gbm_create_device failed");
227 rc = qemu_egl_init_dpy_mesa((EGLNativeDisplayType)qemu_egl_rn_gbm_dev,
230 /* qemu_egl_init_dpy_mesa reports error */
234 if (!epoxy_has_egl_extension(qemu_egl_display,
235 "EGL_KHR_surfaceless_context")) {
236 error_report("egl: EGL_KHR_surfaceless_context not supported");
239 if (!epoxy_has_egl_extension(qemu_egl_display,
240 "EGL_MESA_image_dma_buf_export")) {
241 error_report("egl: EGL_MESA_image_dma_buf_export not supported");
245 qemu_egl_rn_ctx = qemu_egl_init_ctx();
246 if (!qemu_egl_rn_ctx) {
247 error_report("egl: egl_init_ctx failed");
254 if (qemu_egl_rn_gbm_dev) {
255 gbm_device_destroy(qemu_egl_rn_gbm_dev);
257 if (qemu_egl_rn_fd != -1) {
258 close(qemu_egl_rn_fd);
264 int egl_get_fd_for_texture(uint32_t tex_id, EGLint *stride, EGLint *fourcc,
265 EGLuint64KHR *modifier)
268 EGLint num_planes, fd;
270 image = eglCreateImageKHR(qemu_egl_display, eglGetCurrentContext(),
271 EGL_GL_TEXTURE_2D_KHR,
272 (EGLClientBuffer)(unsigned long)tex_id,
278 eglExportDMABUFImageQueryMESA(qemu_egl_display, image, fourcc,
279 &num_planes, modifier);
280 if (num_planes != 1) {
281 eglDestroyImageKHR(qemu_egl_display, image);
284 eglExportDMABUFImageMESA(qemu_egl_display, image, &fd, stride, NULL);
285 eglDestroyImageKHR(qemu_egl_display, image);
290 void egl_dmabuf_import_texture(QemuDmaBuf *dmabuf)
292 EGLImageKHR image = EGL_NO_IMAGE_KHR;
296 if (dmabuf->texture != 0) {
300 attrs[i++] = EGL_WIDTH;
301 attrs[i++] = dmabuf->width;
302 attrs[i++] = EGL_HEIGHT;
303 attrs[i++] = dmabuf->height;
304 attrs[i++] = EGL_LINUX_DRM_FOURCC_EXT;
305 attrs[i++] = dmabuf->fourcc;
307 attrs[i++] = EGL_DMA_BUF_PLANE0_FD_EXT;
308 attrs[i++] = dmabuf->fd;
309 attrs[i++] = EGL_DMA_BUF_PLANE0_PITCH_EXT;
310 attrs[i++] = dmabuf->stride;
311 attrs[i++] = EGL_DMA_BUF_PLANE0_OFFSET_EXT;
313 #ifdef EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT
314 if (dmabuf->modifier) {
315 attrs[i++] = EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT;
316 attrs[i++] = (dmabuf->modifier >> 0) & 0xffffffff;
317 attrs[i++] = EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT;
318 attrs[i++] = (dmabuf->modifier >> 32) & 0xffffffff;
321 attrs[i++] = EGL_NONE;
323 image = eglCreateImageKHR(qemu_egl_display,
325 EGL_LINUX_DMA_BUF_EXT,
327 if (image == EGL_NO_IMAGE_KHR) {
328 error_report("eglCreateImageKHR failed");
332 glGenTextures(1, &dmabuf->texture);
333 glBindTexture(GL_TEXTURE_2D, dmabuf->texture);
334 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
335 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
337 glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, (GLeglImageOES)image);
338 eglDestroyImageKHR(qemu_egl_display, image);
341 void egl_dmabuf_release_texture(QemuDmaBuf *dmabuf)
343 if (dmabuf->texture == 0) {
347 glDeleteTextures(1, &dmabuf->texture);
351 void egl_dmabuf_create_sync(QemuDmaBuf *dmabuf)
355 if (epoxy_has_egl_extension(qemu_egl_display,
356 "EGL_KHR_fence_sync") &&
357 epoxy_has_egl_extension(qemu_egl_display,
358 "EGL_ANDROID_native_fence_sync")) {
359 sync = eglCreateSyncKHR(qemu_egl_display,
360 EGL_SYNC_NATIVE_FENCE_ANDROID, NULL);
361 if (sync != EGL_NO_SYNC_KHR) {
367 void egl_dmabuf_create_fence(QemuDmaBuf *dmabuf)
370 dmabuf->fence_fd = eglDupNativeFenceFDANDROID(qemu_egl_display,
372 eglDestroySyncKHR(qemu_egl_display, dmabuf->sync);
377 #endif /* CONFIG_GBM */
379 /* ---------------------------------------------------------------------- */
381 EGLSurface qemu_egl_init_surface_x11(EGLContext ectx, EGLNativeWindowType win)
386 esurface = eglCreateWindowSurface(qemu_egl_display,
389 if (esurface == EGL_NO_SURFACE) {
390 error_report("egl: eglCreateWindowSurface failed");
394 b = eglMakeCurrent(qemu_egl_display, esurface, esurface, ectx);
395 if (b == EGL_FALSE) {
396 error_report("egl: eglMakeCurrent failed");
403 /* ---------------------------------------------------------------------- */
405 #if defined(CONFIG_X11) || defined(CONFIG_GBM)
408 * Taken from glamor_egl.h from the Xorg xserver, which is MIT licensed
410 * Create an EGLDisplay from a native display type. This is a little quirky
413 * 1: GetPlatformDisplayEXT and GetPlatformDisplay are the API you want to
414 * use, but have different function signatures in the third argument; this
415 * happens not to matter for us, at the moment, but it means epoxy won't alias
418 * 2: epoxy 1.3 and earlier don't understand EGL client extensions, which
419 * means you can't call "eglGetPlatformDisplayEXT" directly, as the resolver
422 * 3: You can't tell whether you have EGL 1.5 at this point, because
423 * eglQueryString(EGL_VERSION) is a property of the display, which we don't
424 * have yet. So you have to query for extensions no matter what. Fortunately
425 * epoxy_has_egl_extension _does_ let you query for client extensions, so
426 * we don't have to write our own extension string parsing.
428 * 4. There is no EGL_KHR_platform_base to complement the EXT one, thus one
429 * needs to know EGL 1.5 is supported in order to use the eglGetPlatformDisplay
431 * We can workaround this (circular dependency) by probing for the EGL 1.5
432 * platform extensions (EGL_KHR_platform_gbm and friends) yet it doesn't seem
433 * like mesa will be able to advertise these (even though it can do EGL 1.5).
435 static EGLDisplay qemu_egl_get_display(EGLNativeDisplayType native,
438 EGLDisplay dpy = EGL_NO_DISPLAY;
440 /* In practise any EGL 1.5 implementation would support the EXT extension */
441 if (epoxy_has_egl_extension(NULL, "EGL_EXT_platform_base")) {
442 PFNEGLGETPLATFORMDISPLAYEXTPROC getPlatformDisplayEXT =
443 (void *) eglGetProcAddress("eglGetPlatformDisplayEXT");
444 if (getPlatformDisplayEXT && platform != 0) {
445 dpy = getPlatformDisplayEXT(platform, native, NULL);
449 if (dpy == EGL_NO_DISPLAY) {
451 dpy = eglGetDisplay(native);
456 static int qemu_egl_init_dpy(EGLNativeDisplayType dpy,
460 static const EGLint conf_att_core[] = {
461 EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
462 EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
469 static const EGLint conf_att_gles[] = {
470 EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
471 EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
481 bool gles = (mode == DISPLAYGL_MODE_ES);
483 qemu_egl_display = qemu_egl_get_display(dpy, platform);
484 if (qemu_egl_display == EGL_NO_DISPLAY) {
485 error_report("egl: eglGetDisplay failed: %s", egl_get_error_string());
489 b = eglInitialize(qemu_egl_display, &major, &minor);
490 if (b == EGL_FALSE) {
491 error_report("egl: eglInitialize failed: %s", egl_get_error_string());
495 b = eglBindAPI(gles ? EGL_OPENGL_ES_API : EGL_OPENGL_API);
496 if (b == EGL_FALSE) {
497 error_report("egl: eglBindAPI failed (%s mode): %s",
498 gles ? "gles" : "core", egl_get_error_string());
502 b = eglChooseConfig(qemu_egl_display,
503 gles ? conf_att_gles : conf_att_core,
504 &qemu_egl_config, 1, &n);
505 if (b == EGL_FALSE || n != 1) {
506 error_report("egl: eglChooseConfig failed (%s mode): %s",
507 gles ? "gles" : "core", egl_get_error_string());
511 qemu_egl_mode = gles ? DISPLAYGL_MODE_ES : DISPLAYGL_MODE_CORE;
515 int qemu_egl_init_dpy_x11(EGLNativeDisplayType dpy, DisplayGLMode mode)
517 #ifdef EGL_KHR_platform_x11
518 return qemu_egl_init_dpy(dpy, EGL_PLATFORM_X11_KHR, mode);
520 return qemu_egl_init_dpy(dpy, 0, mode);
524 int qemu_egl_init_dpy_mesa(EGLNativeDisplayType dpy, DisplayGLMode mode)
526 #ifdef EGL_MESA_platform_gbm
527 return qemu_egl_init_dpy(dpy, EGL_PLATFORM_GBM_MESA, mode);
529 return qemu_egl_init_dpy(dpy, 0, mode);
535 bool qemu_egl_has_dmabuf(void)
537 if (qemu_egl_display == EGL_NO_DISPLAY) {
541 return epoxy_has_egl_extension(qemu_egl_display,
542 "EGL_EXT_image_dma_buf_import");
545 EGLContext qemu_egl_init_ctx(void)
547 static const EGLint ctx_att_core[] = {
548 EGL_CONTEXT_OPENGL_PROFILE_MASK, EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT,
551 static const EGLint ctx_att_gles[] = {
552 EGL_CONTEXT_CLIENT_VERSION, 2,
555 bool gles = (qemu_egl_mode == DISPLAYGL_MODE_ES);
559 ectx = eglCreateContext(qemu_egl_display, qemu_egl_config, EGL_NO_CONTEXT,
560 gles ? ctx_att_gles : ctx_att_core);
561 if (ectx == EGL_NO_CONTEXT) {
562 error_report("egl: eglCreateContext failed");
566 b = eglMakeCurrent(qemu_egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE, ectx);
567 if (b == EGL_FALSE) {
568 error_report("egl: eglMakeCurrent failed");
575 bool egl_init(const char *rendernode, DisplayGLMode mode, Error **errp)
579 if (mode == DISPLAYGL_MODE_OFF) {
580 error_setg(errp, "egl: turning off GL doesn't make sense");
585 if (egl_rendernode_init(rendernode, mode) < 0) {
586 error_setg(errp, "egl: render node init failed");
592 error_setg(errp, "egl: not available on this platform");