commit 1f5ca753c426aaacb7ba11443558d7c856c437f4
author Treehugger Robot <treehugger-gerrit@google.com> Wed Oct 02 22:53:16 2019 +0000
committer Gerrit Code Review <noreply-gerritcodereview@google.com> Wed Oct 02 22:53:16 2019 +0000
tree ee6bd83dabb4a90cf172b551ed5d01951fdeac69
parent d00563735ff89c07fc56c2fb55a029c504a0931e
parent b7e474b88db6955925be4f9fe14e586aa0b66c8c

Merge "Check GL extension is supported before using it in glwallpaper"

packages/SystemUI/src/com/android/systemui/glwallpaper/EglHelper.java

diff --git a/packages/SystemUI/src/com/android/systemui/glwallpaper/EglHelper.java b/packages/SystemUI/src/com/android/systemui/glwallpaper/EglHelper.java
index d7411260..7277e92 100644
--- a/packages/SystemUI/src/com/android/systemui/glwallpaper/EglHelper.java
+++ b/packages/SystemUI/src/com/android/systemui/glwallpaper/EglHelper.java
@@ -22,6 +22,7 @@
 import static android.opengl.EGL14.EGL_CONTEXT_CLIENT_VERSION;
 import static android.opengl.EGL14.EGL_DEFAULT_DISPLAY;
 import static android.opengl.EGL14.EGL_DEPTH_SIZE;
+import static android.opengl.EGL14.EGL_EXTENSIONS;
 import static android.opengl.EGL14.EGL_GREEN_SIZE;
 import static android.opengl.EGL14.EGL_NONE;
 import static android.opengl.EGL14.EGL_NO_CONTEXT;
@@ -41,6 +42,7 @@
 import static android.opengl.EGL14.eglGetError;
 import static android.opengl.EGL14.eglInitialize;
 import static android.opengl.EGL14.eglMakeCurrent;
+import static android.opengl.EGL14.eglQueryString;
 import static android.opengl.EGL14.eglSwapBuffers;
 import static android.opengl.EGL14.eglTerminate;
 
@@ -63,6 +65,7 @@
     // Below two constants make drawing at low priority, so other things can preempt our drawing.
     private static final int EGL_CONTEXT_PRIORITY_LEVEL_IMG = 0x3100;
     private static final int EGL_CONTEXT_PRIORITY_LOW_IMG = 0x3103;
+    private static final String EGL_IMG_CONTEXT_PRIORITY = "EGL_IMG_context_priority";
 
     private EGLDisplay mEglDisplay;
     private EGLConfig mEglConfig;
@@ -70,6 +73,7 @@
     private EGLSurface mEglSurface;
     private final int[] mEglVersion = new int[2];
     private boolean mEglReady;
+    private boolean mContextPrioritySupported;
 
     /**
      * Initialize EGL and prepare EglSurface.
@@ -105,10 +109,22 @@
             return false;
         }
 
+        mContextPrioritySupported = isContextPrioritySuppported();
+
         mEglReady = true;
         return true;
     }
 
+    private boolean isContextPrioritySuppported() {
+        String[] extensions = eglQueryString(mEglDisplay, EGL_EXTENSIONS).split(" ");
+        for (String extension : extensions) {
+            if (extension.equals(EGL_IMG_CONTEXT_PRIORITY)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
     private EGLConfig chooseEglConfig() {
         int[] configsCount = new int[1];
         EGLConfig[] configs = new EGLConfig[1];
@@ -184,8 +200,15 @@
      * @return true if EglContext is ready.
      */
     public boolean createEglContext() {
-        int[] attrib_list = new int[] {EGL_CONTEXT_CLIENT_VERSION, 2,
-                EGL_CONTEXT_PRIORITY_LEVEL_IMG, EGL_CONTEXT_PRIORITY_LOW_IMG, EGL_NONE};
+        int[] attrib_list = new int[5];
+        int idx = 0;
+        attrib_list[idx++] = EGL_CONTEXT_CLIENT_VERSION;
+        attrib_list[idx++] = 2;
+        if (mContextPrioritySupported) {
+            attrib_list[idx++] = EGL_CONTEXT_PRIORITY_LEVEL_IMG;
+            attrib_list[idx++] = EGL_CONTEXT_PRIORITY_LOW_IMG;
+        }
+        attrib_list[idx++] = EGL_NONE;
         mEglContext = eglCreateContext(mEglDisplay, mEglConfig, EGL_NO_CONTEXT, attrib_list, 0);
         if (mEglContext == EGL_NO_CONTEXT) {
             Log.w(TAG, "eglCreateContext failed: " + GLUtils.getEGLErrorString(eglGetError()));