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"
21 #include "qemu/error-report.h"
22 #include "ui/console.h"
23 #include "ui/egl-helpers.h"
25 EGLDisplay *qemu_egl_display;
26 EGLConfig qemu_egl_config;
28 /* ------------------------------------------------------------------ */
30 static void egl_fb_delete_texture(egl_fb *fb)
32 if (!fb->delete_texture) {
36 glDeleteTextures(1, &fb->texture);
37 fb->delete_texture = false;
40 void egl_fb_destroy(egl_fb *fb)
42 if (!fb->framebuffer) {
46 egl_fb_delete_texture(fb);
47 glDeleteFramebuffers(1, &fb->framebuffer);
55 void egl_fb_setup_default(egl_fb *fb, int width, int height)
59 fb->framebuffer = 0; /* default framebuffer */
62 void egl_fb_setup_for_tex(egl_fb *fb, int width, int height,
63 GLuint texture, bool delete)
65 egl_fb_delete_texture(fb);
69 fb->texture = texture;
70 fb->delete_texture = delete;
71 if (!fb->framebuffer) {
72 glGenFramebuffers(1, &fb->framebuffer);
75 glBindFramebuffer(GL_FRAMEBUFFER_EXT, fb->framebuffer);
76 glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
77 GL_TEXTURE_2D, fb->texture, 0);
80 void egl_fb_setup_new_tex(egl_fb *fb, int width, int height)
84 glGenTextures(1, &texture);
85 glBindTexture(GL_TEXTURE_2D, texture);
86 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height,
87 0, GL_BGRA, GL_UNSIGNED_BYTE, 0);
89 egl_fb_setup_for_tex(fb, width, height, texture, true);
92 void egl_fb_blit(egl_fb *dst, egl_fb *src, bool flip)
96 glBindFramebuffer(GL_READ_FRAMEBUFFER, src->framebuffer);
97 glBindFramebuffer(GL_DRAW_FRAMEBUFFER, dst->framebuffer);
98 glViewport(0, 0, dst->width, dst->height);
99 y1 = flip ? src->height : 0;
100 y2 = flip ? 0 : src->height;
101 glBlitFramebuffer(0, y1, src->width, y2,
102 0, 0, dst->width, dst->height,
103 GL_COLOR_BUFFER_BIT, GL_LINEAR);
106 void egl_fb_read(void *dst, egl_fb *src)
108 glBindFramebuffer(GL_READ_FRAMEBUFFER, src->framebuffer);
109 glReadBuffer(GL_COLOR_ATTACHMENT0_EXT);
110 glReadPixels(0, 0, src->width, src->height,
111 GL_BGRA, GL_UNSIGNED_BYTE, dst);
114 void egl_texture_blit(QemuGLShader *gls, egl_fb *dst, egl_fb *src, bool flip)
116 glBindFramebuffer(GL_FRAMEBUFFER_EXT, dst->framebuffer);
117 glViewport(0, 0, dst->width, dst->height);
118 glEnable(GL_TEXTURE_2D);
119 glBindTexture(GL_TEXTURE_2D, src->texture);
120 qemu_gl_run_texture_blit(gls, flip);
123 void egl_texture_blend(QemuGLShader *gls, egl_fb *dst, egl_fb *src, bool flip,
126 glBindFramebuffer(GL_FRAMEBUFFER_EXT, dst->framebuffer);
128 glViewport(x, y, src->width, src->height);
130 glViewport(x, dst->height - src->height - y,
131 src->width, src->height);
133 glEnable(GL_TEXTURE_2D);
134 glBindTexture(GL_TEXTURE_2D, src->texture);
136 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
137 qemu_gl_run_texture_blit(gls, flip);
141 /* ---------------------------------------------------------------------- */
143 #ifdef CONFIG_OPENGL_DMABUF
146 struct gbm_device *qemu_egl_rn_gbm_dev;
147 EGLContext qemu_egl_rn_ctx;
149 static int qemu_egl_rendernode_open(const char *rendernode)
157 return open(rendernode, O_RDWR | O_CLOEXEC | O_NOCTTY | O_NONBLOCK);
160 dir = opendir("/dev/dri");
166 while ((e = readdir(dir))) {
167 if (e->d_type != DT_CHR) {
171 if (strncmp(e->d_name, "renderD", 7)) {
175 p = g_strdup_printf("/dev/dri/%s", e->d_name);
177 r = open(p, O_RDWR | O_CLOEXEC | O_NOCTTY | O_NONBLOCK);
194 int egl_rendernode_init(const char *rendernode)
199 qemu_egl_rn_fd = qemu_egl_rendernode_open(rendernode);
200 if (qemu_egl_rn_fd == -1) {
201 error_report("egl: no drm render node available");
205 qemu_egl_rn_gbm_dev = gbm_create_device(qemu_egl_rn_fd);
206 if (!qemu_egl_rn_gbm_dev) {
207 error_report("egl: gbm_create_device failed");
211 rc = qemu_egl_init_dpy_mesa((EGLNativeDisplayType)qemu_egl_rn_gbm_dev);
213 /* qemu_egl_init_dpy_mesa reports error */
217 if (!epoxy_has_egl_extension(qemu_egl_display,
218 "EGL_KHR_surfaceless_context")) {
219 error_report("egl: EGL_KHR_surfaceless_context not supported");
222 if (!epoxy_has_egl_extension(qemu_egl_display,
223 "EGL_MESA_image_dma_buf_export")) {
224 error_report("egl: EGL_MESA_image_dma_buf_export not supported");
228 qemu_egl_rn_ctx = qemu_egl_init_ctx();
229 if (!qemu_egl_rn_ctx) {
230 error_report("egl: egl_init_ctx failed");
237 if (qemu_egl_rn_gbm_dev) {
238 gbm_device_destroy(qemu_egl_rn_gbm_dev);
240 if (qemu_egl_rn_fd != -1) {
241 close(qemu_egl_rn_fd);
247 int egl_get_fd_for_texture(uint32_t tex_id, EGLint *stride, EGLint *fourcc)
250 EGLint num_planes, fd;
252 image = eglCreateImageKHR(qemu_egl_display, eglGetCurrentContext(),
253 EGL_GL_TEXTURE_2D_KHR,
254 (EGLClientBuffer)(unsigned long)tex_id,
260 eglExportDMABUFImageQueryMESA(qemu_egl_display, image, fourcc,
262 if (num_planes != 1) {
263 eglDestroyImageKHR(qemu_egl_display, image);
266 eglExportDMABUFImageMESA(qemu_egl_display, image, &fd, stride, NULL);
267 eglDestroyImageKHR(qemu_egl_display, image);
272 void egl_dmabuf_import_texture(QemuDmaBuf *dmabuf)
274 EGLImageKHR image = EGL_NO_IMAGE_KHR;
276 EGL_DMA_BUF_PLANE0_FD_EXT, dmabuf->fd,
277 EGL_DMA_BUF_PLANE0_PITCH_EXT, dmabuf->stride,
278 EGL_DMA_BUF_PLANE0_OFFSET_EXT, 0,
279 EGL_WIDTH, dmabuf->width,
280 EGL_HEIGHT, dmabuf->height,
281 EGL_LINUX_DRM_FOURCC_EXT, dmabuf->fourcc,
282 EGL_NONE, /* end of list */
285 if (dmabuf->texture != 0) {
289 image = eglCreateImageKHR(qemu_egl_display,
291 EGL_LINUX_DMA_BUF_EXT,
293 if (image == EGL_NO_IMAGE_KHR) {
294 error_report("eglCreateImageKHR failed");
298 glGenTextures(1, &dmabuf->texture);
299 glBindTexture(GL_TEXTURE_2D, dmabuf->texture);
300 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
301 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
303 glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, (GLeglImageOES)image);
304 eglDestroyImageKHR(qemu_egl_display, image);
307 void egl_dmabuf_release_texture(QemuDmaBuf *dmabuf)
309 if (dmabuf->texture == 0) {
313 glDeleteTextures(1, &dmabuf->texture);
317 #endif /* CONFIG_OPENGL_DMABUF */
319 /* ---------------------------------------------------------------------- */
321 EGLSurface qemu_egl_init_surface_x11(EGLContext ectx, Window win)
326 esurface = eglCreateWindowSurface(qemu_egl_display,
328 (EGLNativeWindowType)win, NULL);
329 if (esurface == EGL_NO_SURFACE) {
330 error_report("egl: eglCreateWindowSurface failed");
334 b = eglMakeCurrent(qemu_egl_display, esurface, esurface, ectx);
335 if (b == EGL_FALSE) {
336 error_report("egl: eglMakeCurrent failed");
343 /* ---------------------------------------------------------------------- */
346 * Taken from glamor_egl.h from the Xorg xserver, which is MIT licensed
348 * Create an EGLDisplay from a native display type. This is a little quirky
351 * 1: GetPlatformDisplayEXT and GetPlatformDisplay are the API you want to
352 * use, but have different function signatures in the third argument; this
353 * happens not to matter for us, at the moment, but it means epoxy won't alias
356 * 2: epoxy 1.3 and earlier don't understand EGL client extensions, which
357 * means you can't call "eglGetPlatformDisplayEXT" directly, as the resolver
360 * 3: You can't tell whether you have EGL 1.5 at this point, because
361 * eglQueryString(EGL_VERSION) is a property of the display, which we don't
362 * have yet. So you have to query for extensions no matter what. Fortunately
363 * epoxy_has_egl_extension _does_ let you query for client extensions, so
364 * we don't have to write our own extension string parsing.
366 * 4. There is no EGL_KHR_platform_base to complement the EXT one, thus one
367 * needs to know EGL 1.5 is supported in order to use the eglGetPlatformDisplay
369 * We can workaround this (circular dependency) by probing for the EGL 1.5
370 * platform extensions (EGL_KHR_platform_gbm and friends) yet it doesn't seem
371 * like mesa will be able to advertise these (even though it can do EGL 1.5).
373 static EGLDisplay qemu_egl_get_display(EGLNativeDisplayType native,
376 EGLDisplay dpy = EGL_NO_DISPLAY;
378 /* In practise any EGL 1.5 implementation would support the EXT extension */
379 if (epoxy_has_egl_extension(NULL, "EGL_EXT_platform_base")) {
380 PFNEGLGETPLATFORMDISPLAYEXTPROC getPlatformDisplayEXT =
381 (void *) eglGetProcAddress("eglGetPlatformDisplayEXT");
382 if (getPlatformDisplayEXT && platform != 0) {
383 dpy = getPlatformDisplayEXT(platform, native, NULL);
387 if (dpy == EGL_NO_DISPLAY) {
389 dpy = eglGetDisplay(native);
394 static int qemu_egl_init_dpy(EGLNativeDisplayType dpy,
397 static const EGLint conf_att_gl[] = {
398 EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
399 EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
410 qemu_egl_display = qemu_egl_get_display(dpy, platform);
411 if (qemu_egl_display == EGL_NO_DISPLAY) {
412 error_report("egl: eglGetDisplay failed");
416 b = eglInitialize(qemu_egl_display, &major, &minor);
417 if (b == EGL_FALSE) {
418 error_report("egl: eglInitialize failed");
422 b = eglBindAPI(EGL_OPENGL_API);
423 if (b == EGL_FALSE) {
424 error_report("egl: eglBindAPI failed");
428 b = eglChooseConfig(qemu_egl_display, conf_att_gl,
429 &qemu_egl_config, 1, &n);
430 if (b == EGL_FALSE || n != 1) {
431 error_report("egl: eglChooseConfig failed");
437 int qemu_egl_init_dpy_x11(EGLNativeDisplayType dpy)
439 #ifdef EGL_KHR_platform_x11
440 return qemu_egl_init_dpy(dpy, EGL_PLATFORM_X11_KHR);
442 return qemu_egl_init_dpy(dpy, 0);
446 int qemu_egl_init_dpy_mesa(EGLNativeDisplayType dpy)
448 #ifdef EGL_MESA_platform_gbm
449 return qemu_egl_init_dpy(dpy, EGL_PLATFORM_GBM_MESA);
451 return qemu_egl_init_dpy(dpy, 0);
455 EGLContext qemu_egl_init_ctx(void)
457 static const EGLint ctx_att_gl[] = {
458 EGL_CONTEXT_OPENGL_PROFILE_MASK, EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT,
464 ectx = eglCreateContext(qemu_egl_display, qemu_egl_config, EGL_NO_CONTEXT,
466 if (ectx == EGL_NO_CONTEXT) {
467 error_report("egl: eglCreateContext failed");
471 b = eglMakeCurrent(qemu_egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE, ectx);
472 if (b == EGL_FALSE) {
473 error_report("egl: eglMakeCurrent failed");