From 6063a63f283868b7124f53a5babb38f7f02eefb8 Mon Sep 17 00:00:00 2001
From: Vera-Firefly <1964762970@qq.com>
Date: Thu, 14 Nov 2024 18:17:54 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E5=A4=8D[=E6=A1=A5=E6=8E=A5=E9=85=8D?=
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---
 .../src/main/jni/ctxbridges/osm_bridge_xxx2.c | 34 +++++++++++++------
 1 file changed, 23 insertions(+), 11 deletions(-)

diff --git a/app_pojavlauncher/src/main/jni/ctxbridges/osm_bridge_xxx2.c b/app_pojavlauncher/src/main/jni/ctxbridges/osm_bridge_xxx2.c
index 5a215c0c..5136a46c 100644
--- a/app_pojavlauncher/src/main/jni/ctxbridges/osm_bridge_xxx2.c
+++ b/app_pojavlauncher/src/main/jni/ctxbridges/osm_bridge_xxx2.c
@@ -17,6 +17,8 @@
 
 ANativeWindow_Buffer buf;
 int32_t stride;
+
+static bool hasCleaned = false;
 void *abuffer;
 
 void *xxx2OsmGetCurrentContext() {
@@ -32,15 +34,19 @@ void xxx2OsmSwapBuffers() {
     if (ctx == NULL)
         printf("Zink: attempted to swap buffers without context!");
 
-    OSMesaMakeCurrent_p(ctx,buf.bits,GL_UNSIGNED_BYTE,pojav_environ->savedWidth,pojav_environ->savedHeight);
+    ANativeWindow_lock(pojav_environ->pojavWindow, &buf, NULL);
+    OSMesaMakeCurrent_p(ctx, buf.bits, GL_UNSIGNED_BYTE, pojav_environ->savedWidth, pojav_environ->savedHeight);
     glFinish_p();
+
+    if (buf.stride != stride)
+        OSMesaPixelStore_p(OSMESA_ROW_LENGTH, buf.stride);
+    stride = buf.stride;
+
     ANativeWindow_unlockAndPost(pojav_environ->pojavWindow);
-    ANativeWindow_lock(pojav_environ->pojavWindow,&buf,NULL);
 }
 
 void xxx2OsmMakeCurrent(void *window) {
     printf("OSMDroid: making current\n");
-
     if (SpareBuffer())
     {
     #ifdef FRAME_BUFFER_SUPPOST
@@ -58,16 +64,22 @@ void xxx2OsmMakeCurrent(void *window) {
                                    pojav_environ->savedWidth,
                                    pojav_environ->savedHeight);
 
-    ANativeWindow_lock(pojav_environ->pojavWindow,&buf,NULL);
-    OSMesaPixelStore_p(OSMESA_ROW_LENGTH,buf.stride);
+    OSMesaPixelStore_p(OSMESA_Y_UP, 0);
+    if (!hasCleaned) ANativeWindow_lock(pojav_environ->pojavWindow, &buf, NULL);
+
+    if (buf.stride != stride)
+        OSMesaPixelStore_p(OSMESA_ROW_LENGTH, buf.stride);
     stride = buf.stride;
-    OSMesaPixelStore_p(OSMESA_Y_UP,0);
 
-    printf("OSMDroid: vendor: %s\n",glGetString_p(GL_VENDOR));
-    printf("OSMDroid: renderer: %s\n",glGetString_p(GL_RENDERER));
-    glClear_p(GL_COLOR_BUFFER_BIT);
-    glClearColor_p(0.4f, 0.4f, 0.4f, 1.0f);
-    xxx2OsmSwapBuffers();
+    printf("OSMDroid: vendor: %s\n", glGetString_p(GL_VENDOR));
+    printf("OSMDroid: renderer: %s\n", glGetString_p(GL_RENDERER));
+    if (!hasCleaned)
+    {
+        hasCleaned = true;
+        glClear_p(GL_COLOR_BUFFER_BIT);
+        glClearColor_p(0.4f, 0.4f, 0.4f, 1.0f);
+        ANativeWindow_unlockAndPost(pojav_environ->pojavWindow);
+    }
 }
 
 void *xxx2OsmCreateContext(void *contextSrc) {