From 2f2a357bcd04e74fffdb2b1a362cf58312b4f7bd Mon Sep 17 00:00:00 2001
From: Duy Tran Khanh <khanhduytran0@users.noreply.github.com>
Date: Fri, 8 Jan 2021 12:46:18 +0700
Subject: [PATCH] Try glFlush()

---
 Natives/egl_bridge.c     | 10 +++++-----
 Natives/egl_bridge_ios.m |  2 ++
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/Natives/egl_bridge.c b/Natives/egl_bridge.c
index 62c41588..6fa00993 100644
--- a/Natives/egl_bridge.c
+++ b/Natives/egl_bridge.c
@@ -17,9 +17,9 @@
 #include "log.h"
 
 typedef void gl4esInitialize_func();
-typedef void gl4esSwapBuffers_func();
+// typedef void gl4esSwapBuffers_func();
 
-gl4esSwapBuffers_func *gl4esSwapBuffers;
+// gl4esSwapBuffers_func *gl4esSwapBuffers;
 
 // Called from JNI_OnLoad of liblwjgl_opengl
 void pojav_openGLOnLoad() {
@@ -77,7 +77,7 @@ JNIEXPORT jboolean JNICALL Java_org_lwjgl_glfw_GLFW_nativeEglMakeCurrent(JNIEnv*
     gl4esInitialize_func *gl4esInitialize = (gl4esInitialize_func*) dlsym(GL4ES_HANDLE, "initialize_gl4es");
     // debug("initialize_gl4es = %p", gl4esInitialize);
     
-    gl4esSwapBuffers = (gl4esSwapBuffers_func*) dlsym(GL4ES_HANDLE, "gl4es_SwapBuffers_currentContext");
+    // gl4esSwapBuffers = (gl4esSwapBuffers_func*) dlsym(GL4ES_HANDLE, "gl4es_SwapBuffers_currentContext");
     
     gl4esInitialize();
     debug("GL4ES init success");
@@ -96,8 +96,8 @@ JNIEXPORT jboolean JNICALL Java_org_lwjgl_glfw_GLFW_nativeEglSwapBuffers(JNIEnv
         return JNI_FALSE;
     }
     
-    gl4esSwapBuffers();
-    // flushBuffer();
+    // gl4esSwapBuffers();
+    flushBuffer();
     return JNI_TRUE;
 }
 
diff --git a/Natives/egl_bridge_ios.m b/Natives/egl_bridge_ios.m
index fef13571..f42d4ff3 100644
--- a/Natives/egl_bridge_ios.m
+++ b/Natives/egl_bridge_ios.m
@@ -72,6 +72,8 @@ jboolean clearCurrentContext() {
 
 void flushBuffer() {
     // glBindRenderbuffer(GL_RENDERBUFFER, RenderBuffer);
+    
+    glFlush();
 
     [[EAGLContext currentContext] presentRenderbuffer:GL_RENDERBUFFER];