b38dea0597
Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.
39 lines
1.8 KiB
C
39 lines
1.8 KiB
C
/* SPDX-License-Identifier: MPL-2.0
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* Local GLVND adapter for Droidian libhybris b22d041 (Wayland only).
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* That revision passes its wrapper EGLDisplay to Android eglGetConfigAttrib.
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* All other entry points retain the vendor's implementation. The launcher
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* must verify the exact vendor library hash before enabling this adapter.
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*/
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#define EGL_NO_X11
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#include <glvnd/libeglabi.h>
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extern void *dlopen(const char *, int);
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extern void *dlsym(void *, const char *);
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extern int strcmp(const char *, const char *);
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static void *(*vendor_proc)(const char *);
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static EGLBoolean (*vendor_config)(EGLDisplay, EGLConfig, EGLint, EGLint *);
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static EGLBoolean config_attrib(EGLDisplay display, EGLConfig config,
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EGLint attribute, EGLint *value) {
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/* ws.h at b22d041: _EGLDisplay begins with the Android EGLDisplay dpy.
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* GLVND has already checked that this display belongs to this vendor.
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*/
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EGLDisplay android_display = *(EGLDisplay *)display;
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return vendor_config(android_display, config, attribute, value);
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}
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static void *get_proc(const char *name) {
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if (!strcmp(name, "eglGetConfigAttrib")) return (void *)config_attrib;
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return vendor_proc(name);
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}
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EGLBoolean __egl_Main(uint32_t version, const __EGLapiExports *exports,
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__EGLvendorInfo *vendor, __EGLapiImports *imports) {
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void *library = dlopen("libEGL_libhybris.so.0", 2);
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if (!library) return EGL_FALSE;
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EGLBoolean (*entry)(uint32_t, const __EGLapiExports *, __EGLvendorInfo *,
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__EGLapiImports *) = dlsym(library, "__egl_Main");
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if (!entry || !entry(version, exports, vendor, imports)) return EGL_FALSE;
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vendor_proc = imports->getProcAddress;
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vendor_config = vendor_proc("eglGetConfigAttrib");
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if (!vendor_config) return EGL_FALSE;
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imports->getProcAddress = get_proc;
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return EGL_TRUE;
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}
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