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render/egl: add wlr_egl_create_with_context

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This allows creating a wlr_egl from an already-existing EGL display
and context. This is useful to allow compositors to choose the exact
EGL initialization parameters.
This commit is contained in:
Simon Ser 2021-11-27 20:01:48 +01:00
parent ffd4a27714
commit 051d1ce90e
2 changed files with 53 additions and 9 deletions
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3
include/wlr/render/egl.h
View file

@ -69,6 +69,9 @@ struct wlr_egl {
struct wlr_drm_format_set dmabuf_render_formats;
};
struct wlr_egl *wlr_egl_create_with_context(EGLDisplay display,
EGLContext context);
/**
* Make the EGL context current.
*

59
render/egl.c
View file

@ -232,14 +232,8 @@ static struct wlr_egl *egl_create(void) {
return egl;
}
static bool egl_init(struct wlr_egl *egl, EGLenum platform,
void *remote_display) {
egl->display = egl->procs.eglGetPlatformDisplayEXT(platform,
remote_display, NULL);
if (egl->display == EGL_NO_DISPLAY) {
wlr_log(WLR_ERROR, "Failed to create EGL display");
return false;
}
static bool egl_init_display(struct wlr_egl *egl, EGLDisplay *display) {
egl->display = display;
EGLint major, minor;
if (eglInitialize(egl->display, &major, &minor) == EGL_FALSE) {
@ -327,11 +321,11 @@ static bool egl_init(struct wlr_egl *egl, EGLenum platform,
egl->exts.IMG_context_priority =
check_egl_ext(display_exts_str, "EGL_IMG_context_priority");
wlr_log(WLR_INFO, "Using EGL %d.%d", (int)major, (int)minor);
wlr_log(WLR_INFO, "Supported EGL display extensions: %s", display_exts_str);
if (device_exts_str != NULL) {
wlr_log(WLR_INFO, "Supported EGL device extensions: %s", device_exts_str);
}
wlr_log(WLR_INFO, "Using EGL %d.%d", (int)major, (int)minor);
wlr_log(WLR_INFO, "EGL vendor: %s", eglQueryString(egl->display, EGL_VENDOR));
if (driver_name != NULL) {
wlr_log(WLR_INFO, "EGL driver name: %s", driver_name);
@ -339,6 +333,23 @@ static bool egl_init(struct wlr_egl *egl, EGLenum platform,
init_dmabuf_formats(egl);
return true;
}
static bool egl_init(struct wlr_egl *egl, EGLenum platform,
void *remote_display) {
EGLDisplay display = egl->procs.eglGetPlatformDisplayEXT(platform,
remote_display, NULL);
if (display == EGL_NO_DISPLAY) {
wlr_log(WLR_ERROR, "Failed to create EGL display");
return false;
}
if (!egl_init_display(egl, display)) {
eglTerminate(display);
return false;
}
size_t atti = 0;
EGLint attribs[5];
attribs[atti++] = EGL_CONTEXT_CLIENT_VERSION;
@ -516,6 +527,36 @@ error:
return NULL;
}
struct wlr_egl *wlr_egl_create_with_context(EGLDisplay display,
EGLContext context) {
EGLint client_type;
if (!eglQueryContext(display, context, EGL_CONTEXT_CLIENT_TYPE, &client_type) ||
client_type != EGL_OPENGL_ES_API) {
wlr_log(WLR_ERROR, "Unsupported EGL context client type (need OpenGL ES)");
return NULL;
}
EGLint client_version;
if (!eglQueryContext(display, context, EGL_CONTEXT_CLIENT_VERSION, &client_version) ||
client_version < 2) {
wlr_log(WLR_ERROR, "Unsupported EGL context client version (need OpenGL ES >= 2)");
return NULL;
}
struct wlr_egl *egl = egl_create();
if (egl == NULL) {
return NULL;
}
if (!egl_init_display(egl, display)) {
return NULL;
}
egl->context = context;
return egl;
}
void wlr_egl_destroy(struct wlr_egl *egl) {
if (egl == NULL) {
return;