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"
21 #include "qemu/error-report.h"
22 #include "ui/egl-helpers.h"
24 EGLDisplay
*qemu_egl_display
;
25 EGLConfig qemu_egl_config
;
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_RGB
, 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 /* ---------------------------------------------------------------------- */
115 #ifdef CONFIG_OPENGL_DMABUF
118 struct gbm_device
*qemu_egl_rn_gbm_dev
;
119 EGLContext qemu_egl_rn_ctx
;
121 static int qemu_egl_rendernode_open(const char *rendernode
)
129 return open(rendernode
, O_RDWR
| O_CLOEXEC
| O_NOCTTY
| O_NONBLOCK
);
132 dir
= opendir("/dev/dri");
138 while ((e
= readdir(dir
))) {
139 if (e
->d_type
!= DT_CHR
) {
143 if (strncmp(e
->d_name
, "renderD", 7)) {
147 p
= g_strdup_printf("/dev/dri/%s", e
->d_name
);
149 r
= open(p
, O_RDWR
| O_CLOEXEC
| O_NOCTTY
| O_NONBLOCK
);
166 int egl_rendernode_init(const char *rendernode
)
171 qemu_egl_rn_fd
= qemu_egl_rendernode_open(rendernode
);
172 if (qemu_egl_rn_fd
== -1) {
173 error_report("egl: no drm render node available");
177 qemu_egl_rn_gbm_dev
= gbm_create_device(qemu_egl_rn_fd
);
178 if (!qemu_egl_rn_gbm_dev
) {
179 error_report("egl: gbm_create_device failed");
183 rc
= qemu_egl_init_dpy_mesa((EGLNativeDisplayType
)qemu_egl_rn_gbm_dev
);
185 /* qemu_egl_init_dpy_mesa reports error */
189 if (!epoxy_has_egl_extension(qemu_egl_display
,
190 "EGL_KHR_surfaceless_context")) {
191 error_report("egl: EGL_KHR_surfaceless_context not supported");
194 if (!epoxy_has_egl_extension(qemu_egl_display
,
195 "EGL_MESA_image_dma_buf_export")) {
196 error_report("egl: EGL_MESA_image_dma_buf_export not supported");
200 qemu_egl_rn_ctx
= qemu_egl_init_ctx();
201 if (!qemu_egl_rn_ctx
) {
202 error_report("egl: egl_init_ctx failed");
209 if (qemu_egl_rn_gbm_dev
) {
210 gbm_device_destroy(qemu_egl_rn_gbm_dev
);
212 if (qemu_egl_rn_fd
!= -1) {
213 close(qemu_egl_rn_fd
);
219 int egl_get_fd_for_texture(uint32_t tex_id
, EGLint
*stride
, EGLint
*fourcc
)
222 EGLint num_planes
, fd
;
224 image
= eglCreateImageKHR(qemu_egl_display
, eglGetCurrentContext(),
225 EGL_GL_TEXTURE_2D_KHR
,
226 (EGLClientBuffer
)(unsigned long)tex_id
,
232 eglExportDMABUFImageQueryMESA(qemu_egl_display
, image
, fourcc
,
234 if (num_planes
!= 1) {
235 eglDestroyImageKHR(qemu_egl_display
, image
);
238 eglExportDMABUFImageMESA(qemu_egl_display
, image
, &fd
, stride
, NULL
);
239 eglDestroyImageKHR(qemu_egl_display
, image
);
244 #endif /* CONFIG_OPENGL_DMABUF */
246 /* ---------------------------------------------------------------------- */
248 EGLSurface
qemu_egl_init_surface_x11(EGLContext ectx
, Window win
)
253 esurface
= eglCreateWindowSurface(qemu_egl_display
,
255 (EGLNativeWindowType
)win
, NULL
);
256 if (esurface
== EGL_NO_SURFACE
) {
257 error_report("egl: eglCreateWindowSurface failed");
261 b
= eglMakeCurrent(qemu_egl_display
, esurface
, esurface
, ectx
);
262 if (b
== EGL_FALSE
) {
263 error_report("egl: eglMakeCurrent failed");
270 /* ---------------------------------------------------------------------- */
273 * Taken from glamor_egl.h from the Xorg xserver, which is MIT licensed
275 * Create an EGLDisplay from a native display type. This is a little quirky
278 * 1: GetPlatformDisplayEXT and GetPlatformDisplay are the API you want to
279 * use, but have different function signatures in the third argument; this
280 * happens not to matter for us, at the moment, but it means epoxy won't alias
283 * 2: epoxy 1.3 and earlier don't understand EGL client extensions, which
284 * means you can't call "eglGetPlatformDisplayEXT" directly, as the resolver
287 * 3: You can't tell whether you have EGL 1.5 at this point, because
288 * eglQueryString(EGL_VERSION) is a property of the display, which we don't
289 * have yet. So you have to query for extensions no matter what. Fortunately
290 * epoxy_has_egl_extension _does_ let you query for client extensions, so
291 * we don't have to write our own extension string parsing.
293 * 4. There is no EGL_KHR_platform_base to complement the EXT one, thus one
294 * needs to know EGL 1.5 is supported in order to use the eglGetPlatformDisplay
296 * We can workaround this (circular dependency) by probing for the EGL 1.5
297 * platform extensions (EGL_KHR_platform_gbm and friends) yet it doesn't seem
298 * like mesa will be able to advertise these (even though it can do EGL 1.5).
300 static EGLDisplay
qemu_egl_get_display(EGLNativeDisplayType native
,
303 EGLDisplay dpy
= EGL_NO_DISPLAY
;
305 /* In practise any EGL 1.5 implementation would support the EXT extension */
306 if (epoxy_has_egl_extension(NULL
, "EGL_EXT_platform_base")) {
307 PFNEGLGETPLATFORMDISPLAYEXTPROC getPlatformDisplayEXT
=
308 (void *) eglGetProcAddress("eglGetPlatformDisplayEXT");
309 if (getPlatformDisplayEXT
&& platform
!= 0) {
310 dpy
= getPlatformDisplayEXT(platform
, native
, NULL
);
314 if (dpy
== EGL_NO_DISPLAY
) {
316 dpy
= eglGetDisplay(native
);
321 static int qemu_egl_init_dpy(EGLNativeDisplayType dpy
,
324 static const EGLint conf_att_gl
[] = {
325 EGL_SURFACE_TYPE
, EGL_WINDOW_BIT
,
326 EGL_RENDERABLE_TYPE
, EGL_OPENGL_BIT
,
337 qemu_egl_display
= qemu_egl_get_display(dpy
, platform
);
338 if (qemu_egl_display
== EGL_NO_DISPLAY
) {
339 error_report("egl: eglGetDisplay failed");
343 b
= eglInitialize(qemu_egl_display
, &major
, &minor
);
344 if (b
== EGL_FALSE
) {
345 error_report("egl: eglInitialize failed");
349 b
= eglBindAPI(EGL_OPENGL_API
);
350 if (b
== EGL_FALSE
) {
351 error_report("egl: eglBindAPI failed");
355 b
= eglChooseConfig(qemu_egl_display
, conf_att_gl
,
356 &qemu_egl_config
, 1, &n
);
357 if (b
== EGL_FALSE
|| n
!= 1) {
358 error_report("egl: eglChooseConfig failed");
364 int qemu_egl_init_dpy_x11(EGLNativeDisplayType dpy
)
366 #ifdef EGL_KHR_platform_x11
367 return qemu_egl_init_dpy(dpy
, EGL_PLATFORM_X11_KHR
);
369 return qemu_egl_init_dpy(dpy
, 0);
373 int qemu_egl_init_dpy_mesa(EGLNativeDisplayType dpy
)
375 #ifdef EGL_MESA_platform_gbm
376 return qemu_egl_init_dpy(dpy
, EGL_PLATFORM_GBM_MESA
);
378 return qemu_egl_init_dpy(dpy
, 0);
382 EGLContext
qemu_egl_init_ctx(void)
384 static const EGLint ctx_att_gl
[] = {
385 EGL_CONTEXT_OPENGL_PROFILE_MASK
, EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT
,
391 ectx
= eglCreateContext(qemu_egl_display
, qemu_egl_config
, EGL_NO_CONTEXT
,
393 if (ectx
== EGL_NO_CONTEXT
) {
394 error_report("egl: eglCreateContext failed");
398 b
= eglMakeCurrent(qemu_egl_display
, EGL_NO_SURFACE
, EGL_NO_SURFACE
, ectx
);
399 if (b
== EGL_FALSE
) {
400 error_report("egl: eglMakeCurrent failed");