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"
23 EGLDisplay *qemu_egl_display;
24 EGLConfig qemu_egl_config;
25 DisplayGLMode qemu_egl_mode;
27 /* ------------------------------------------------------------------ */
29 static void egl_fb_delete_texture(egl_fb *fb)
31 if (!fb->delete_texture) {
35 glDeleteTextures(1, &fb->texture);
36 fb->delete_texture = false;
39 void egl_fb_destroy(egl_fb *fb)
41 if (!fb->framebuffer) {
45 egl_fb_delete_texture(fb);
46 glDeleteFramebuffers(1, &fb->framebuffer);
54 void egl_fb_setup_default(egl_fb *fb, int width, int height)
58 fb->framebuffer = 0; /* default framebuffer */
61 void egl_fb_setup_for_tex(egl_fb *fb, int width, int height,
62 GLuint texture, bool delete)
64 egl_fb_delete_texture(fb);
68 fb->texture = texture;
69 fb->delete_texture = delete;
70 if (!fb->framebuffer) {
71 glGenFramebuffers(1, &fb->framebuffer);
74 glBindFramebuffer(GL_FRAMEBUFFER_EXT, fb->framebuffer);
75 glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
76 GL_TEXTURE_2D, fb->texture, 0);
79 void egl_fb_setup_new_tex(egl_fb *fb, int width, int height)
83 glGenTextures(1, &texture);
84 glBindTexture(GL_TEXTURE_2D, texture);
85 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height,
86 0, GL_BGRA, GL_UNSIGNED_BYTE, 0);
88 egl_fb_setup_for_tex(fb, width, height, texture, true);
91 void egl_fb_blit(egl_fb *dst, egl_fb *src, bool flip)
95 glBindFramebuffer(GL_READ_FRAMEBUFFER, src->framebuffer);
96 glBindFramebuffer(GL_DRAW_FRAMEBUFFER, dst->framebuffer);
97 glViewport(0, 0, dst->width, dst->height);
98 y1 = flip ? src->height : 0;
99 y2 = flip ? 0 : src->height;
100 glBlitFramebuffer(0, y1, src->width, y2,
101 0, 0, dst->width, dst->height,
102 GL_COLOR_BUFFER_BIT, GL_LINEAR);
105 void egl_fb_read(void *dst, egl_fb *src)
107 glBindFramebuffer(GL_READ_FRAMEBUFFER, src->framebuffer);
108 glReadBuffer(GL_COLOR_ATTACHMENT0_EXT);
109 glReadPixels(0, 0, src->width, src->height,
110 GL_BGRA, GL_UNSIGNED_BYTE, dst);
113 void egl_texture_blit(QemuGLShader *gls, egl_fb *dst, egl_fb *src, bool flip)
115 glBindFramebuffer(GL_FRAMEBUFFER_EXT, dst->framebuffer);
116 glViewport(0, 0, dst->width, dst->height);
117 glEnable(GL_TEXTURE_2D);
118 glBindTexture(GL_TEXTURE_2D, src->texture);
119 qemu_gl_run_texture_blit(gls, flip);
122 void egl_texture_blend(QemuGLShader *gls, egl_fb *dst, egl_fb *src, bool flip,
123 int x, int y, double scale_x, double scale_y)
125 glBindFramebuffer(GL_FRAMEBUFFER_EXT, dst->framebuffer);
126 int w = scale_x * src->width;
127 int h = scale_y * src->height;
129 glViewport(x, y, w, h);
131 glViewport(x, dst->height - h - y, w, h);
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 int egl_rendernode_init(const char *rendernode, DisplayGLMode mode)
154 qemu_egl_rn_fd = qemu_drm_rendernode_open(rendernode);
155 if (qemu_egl_rn_fd == -1) {
156 error_report("egl: no drm render node available");
160 qemu_egl_rn_gbm_dev = gbm_create_device(qemu_egl_rn_fd);
161 if (!qemu_egl_rn_gbm_dev) {
162 error_report("egl: gbm_create_device failed");
166 rc = qemu_egl_init_dpy_mesa((EGLNativeDisplayType)qemu_egl_rn_gbm_dev,
169 /* qemu_egl_init_dpy_mesa reports error */
173 if (!epoxy_has_egl_extension(qemu_egl_display,
174 "EGL_KHR_surfaceless_context")) {
175 error_report("egl: EGL_KHR_surfaceless_context not supported");
178 if (!epoxy_has_egl_extension(qemu_egl_display,
179 "EGL_MESA_image_dma_buf_export")) {
180 error_report("egl: EGL_MESA_image_dma_buf_export not supported");
184 qemu_egl_rn_ctx = qemu_egl_init_ctx();
185 if (!qemu_egl_rn_ctx) {
186 error_report("egl: egl_init_ctx failed");
193 if (qemu_egl_rn_gbm_dev) {
194 gbm_device_destroy(qemu_egl_rn_gbm_dev);
196 if (qemu_egl_rn_fd != -1) {
197 close(qemu_egl_rn_fd);
203 int egl_get_fd_for_texture(uint32_t tex_id, EGLint *stride, EGLint *fourcc,
204 EGLuint64KHR *modifier)
207 EGLint num_planes, fd;
209 image = eglCreateImageKHR(qemu_egl_display, eglGetCurrentContext(),
210 EGL_GL_TEXTURE_2D_KHR,
211 (EGLClientBuffer)(unsigned long)tex_id,
217 eglExportDMABUFImageQueryMESA(qemu_egl_display, image, fourcc,
218 &num_planes, modifier);
219 if (num_planes != 1) {
220 eglDestroyImageKHR(qemu_egl_display, image);
223 eglExportDMABUFImageMESA(qemu_egl_display, image, &fd, stride, NULL);
224 eglDestroyImageKHR(qemu_egl_display, image);
229 void egl_dmabuf_import_texture(QemuDmaBuf *dmabuf)
231 EGLImageKHR image = EGL_NO_IMAGE_KHR;
235 if (dmabuf->texture != 0) {
239 attrs[i++] = EGL_WIDTH;
240 attrs[i++] = dmabuf->width;
241 attrs[i++] = EGL_HEIGHT;
242 attrs[i++] = dmabuf->height;
243 attrs[i++] = EGL_LINUX_DRM_FOURCC_EXT;
244 attrs[i++] = dmabuf->fourcc;
246 attrs[i++] = EGL_DMA_BUF_PLANE0_FD_EXT;
247 attrs[i++] = dmabuf->fd;
248 attrs[i++] = EGL_DMA_BUF_PLANE0_PITCH_EXT;
249 attrs[i++] = dmabuf->stride;
250 attrs[i++] = EGL_DMA_BUF_PLANE0_OFFSET_EXT;
252 #ifdef EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT
253 if (dmabuf->modifier) {
254 attrs[i++] = EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT;
255 attrs[i++] = (dmabuf->modifier >> 0) & 0xffffffff;
256 attrs[i++] = EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT;
257 attrs[i++] = (dmabuf->modifier >> 32) & 0xffffffff;
260 attrs[i++] = EGL_NONE;
262 image = eglCreateImageKHR(qemu_egl_display,
264 EGL_LINUX_DMA_BUF_EXT,
266 if (image == EGL_NO_IMAGE_KHR) {
267 error_report("eglCreateImageKHR failed");
271 glGenTextures(1, &dmabuf->texture);
272 glBindTexture(GL_TEXTURE_2D, dmabuf->texture);
273 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
274 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
276 glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, (GLeglImageOES)image);
277 eglDestroyImageKHR(qemu_egl_display, image);
280 void egl_dmabuf_release_texture(QemuDmaBuf *dmabuf)
282 if (dmabuf->texture == 0) {
286 glDeleteTextures(1, &dmabuf->texture);
290 #endif /* CONFIG_OPENGL_DMABUF */
292 /* ---------------------------------------------------------------------- */
294 EGLSurface qemu_egl_init_surface_x11(EGLContext ectx, EGLNativeWindowType win)
299 esurface = eglCreateWindowSurface(qemu_egl_display,
302 if (esurface == EGL_NO_SURFACE) {
303 error_report("egl: eglCreateWindowSurface failed");
307 b = eglMakeCurrent(qemu_egl_display, esurface, esurface, ectx);
308 if (b == EGL_FALSE) {
309 error_report("egl: eglMakeCurrent failed");
316 /* ---------------------------------------------------------------------- */
319 * Taken from glamor_egl.h from the Xorg xserver, which is MIT licensed
321 * Create an EGLDisplay from a native display type. This is a little quirky
324 * 1: GetPlatformDisplayEXT and GetPlatformDisplay are the API you want to
325 * use, but have different function signatures in the third argument; this
326 * happens not to matter for us, at the moment, but it means epoxy won't alias
329 * 2: epoxy 1.3 and earlier don't understand EGL client extensions, which
330 * means you can't call "eglGetPlatformDisplayEXT" directly, as the resolver
333 * 3: You can't tell whether you have EGL 1.5 at this point, because
334 * eglQueryString(EGL_VERSION) is a property of the display, which we don't
335 * have yet. So you have to query for extensions no matter what. Fortunately
336 * epoxy_has_egl_extension _does_ let you query for client extensions, so
337 * we don't have to write our own extension string parsing.
339 * 4. There is no EGL_KHR_platform_base to complement the EXT one, thus one
340 * needs to know EGL 1.5 is supported in order to use the eglGetPlatformDisplay
342 * We can workaround this (circular dependency) by probing for the EGL 1.5
343 * platform extensions (EGL_KHR_platform_gbm and friends) yet it doesn't seem
344 * like mesa will be able to advertise these (even though it can do EGL 1.5).
346 static EGLDisplay qemu_egl_get_display(EGLNativeDisplayType native,
349 EGLDisplay dpy = EGL_NO_DISPLAY;
351 /* In practise any EGL 1.5 implementation would support the EXT extension */
352 if (epoxy_has_egl_extension(NULL, "EGL_EXT_platform_base")) {
353 PFNEGLGETPLATFORMDISPLAYEXTPROC getPlatformDisplayEXT =
354 (void *) eglGetProcAddress("eglGetPlatformDisplayEXT");
355 if (getPlatformDisplayEXT && platform != 0) {
356 dpy = getPlatformDisplayEXT(platform, native, NULL);
360 if (dpy == EGL_NO_DISPLAY) {
362 dpy = eglGetDisplay(native);
367 static int qemu_egl_init_dpy(EGLNativeDisplayType dpy,
371 static const EGLint conf_att_core[] = {
372 EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
373 EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
380 static const EGLint conf_att_gles[] = {
381 EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
382 EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
392 bool gles = (mode == DISPLAYGL_MODE_ES);
394 qemu_egl_display = qemu_egl_get_display(dpy, platform);
395 if (qemu_egl_display == EGL_NO_DISPLAY) {
396 error_report("egl: eglGetDisplay failed");
400 b = eglInitialize(qemu_egl_display, &major, &minor);
401 if (b == EGL_FALSE) {
402 error_report("egl: eglInitialize failed");
406 b = eglBindAPI(gles ? EGL_OPENGL_ES_API : EGL_OPENGL_API);
407 if (b == EGL_FALSE) {
408 error_report("egl: eglBindAPI failed (%s mode)",
409 gles ? "gles" : "core");
413 b = eglChooseConfig(qemu_egl_display,
414 gles ? conf_att_gles : conf_att_core,
415 &qemu_egl_config, 1, &n);
416 if (b == EGL_FALSE || n != 1) {
417 error_report("egl: eglChooseConfig failed (%s mode)",
418 gles ? "gles" : "core");
422 qemu_egl_mode = gles ? DISPLAYGL_MODE_ES : DISPLAYGL_MODE_CORE;
426 int qemu_egl_init_dpy_x11(EGLNativeDisplayType dpy, DisplayGLMode mode)
428 #ifdef EGL_KHR_platform_x11
429 return qemu_egl_init_dpy(dpy, EGL_PLATFORM_X11_KHR, mode);
431 return qemu_egl_init_dpy(dpy, 0, mode);
435 int qemu_egl_init_dpy_mesa(EGLNativeDisplayType dpy, DisplayGLMode mode)
437 #ifdef EGL_MESA_platform_gbm
438 return qemu_egl_init_dpy(dpy, EGL_PLATFORM_GBM_MESA, mode);
440 return qemu_egl_init_dpy(dpy, 0, mode);
444 EGLContext qemu_egl_init_ctx(void)
446 static const EGLint ctx_att_core[] = {
447 EGL_CONTEXT_OPENGL_PROFILE_MASK, EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT,
450 static const EGLint ctx_att_gles[] = {
451 EGL_CONTEXT_CLIENT_VERSION, 2,
454 bool gles = (qemu_egl_mode == DISPLAYGL_MODE_ES);
458 ectx = eglCreateContext(qemu_egl_display, qemu_egl_config, EGL_NO_CONTEXT,
459 gles ? ctx_att_gles : ctx_att_core);
460 if (ectx == EGL_NO_CONTEXT) {
461 error_report("egl: eglCreateContext failed");
465 b = eglMakeCurrent(qemu_egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE, ectx);
466 if (b == EGL_FALSE) {
467 error_report("egl: eglMakeCurrent failed");