minecraft-pi-reborn/mods/src/compat/egl.c
2021-09-12 00:08:01 -04:00

40 lines
2.1 KiB
C

#include <EGL/egl.h>
#include <libreborn/libreborn.h>
#include <media-layer/core.h>
// Functions That Have Their Return Values Used
static EGLSurface eglCreateWindowSurface_injection(__attribute__((unused)) EGLDisplay display, __attribute__((unused)) EGLConfig config, __attribute__((unused)) NativeWindowType native_window, __attribute__((unused)) EGLint const *attrib_list) {
return 0;
}
static EGLDisplay eglGetDisplay_injection(__attribute__((unused)) NativeDisplayType native_display) {
return 0;
}
static EGLContext eglCreateContext_injection(__attribute__((unused)) EGLDisplay display, __attribute__((unused)) EGLConfig config, __attribute__((unused)) EGLContext share_context, __attribute__((unused)) EGLint const *attrib_list) {
return 0;
}
// Call media_swap_buffers()
static EGLBoolean eglSwapBuffers_injection(__attribute__((unused)) EGLDisplay display, __attribute__((unused)) EGLSurface surface) {
media_swap_buffers();
return EGL_TRUE;
}
// Patch EGL Calls
__attribute__((constructor)) static void patch_egl_calls() {
// Disable EGL Calls
unsigned char nop_patch[4] = {0x00, 0xf0, 0x20, 0xe3}; // "nop"
patch((void *) 0x1250c, nop_patch); // eglTerminate
patch((void *) 0x12580, nop_patch); // eglBindAPI
overwrite_call((void *) 0x12638, (void *) eglCreateWindowSurface_injection); // eglCreateWindowSurface
patch((void *) 0x12578, nop_patch); // eglChooseConfig
patch((void *) 0x1255c, nop_patch); // eglInitialize
patch((void *) 0x124f0, nop_patch); // eglMakeCurrent #1
patch((void *) 0x12654, nop_patch); // eglMakeCurrent #2
overwrite_call((void *) 0x124dc, (void *) eglSwapBuffers_injection); // eglSwapBuffers #1
overwrite_call((void *) 0x14b6c, (void *) eglSwapBuffers_injection); // eglSwapBuffers #2
overwrite_call((void *) 0x1254c, (void *) eglGetDisplay_injection); // eglGetDisplay
patch((void *) 0x124fc, nop_patch); // eglDestroySurface #1
patch((void *) 0x12504, nop_patch); // eglDestroySurface #2
overwrite_call((void *) 0x12594, (void *) eglCreateContext_injection); // eglCreateContext
}