From d5056072a82adc86c47d2decac101f525f8d753c Mon Sep 17 00:00:00 2001
From: hschlueter <hschlueter@google.com>
Date: Fri, 25 Mar 2022 11:55:22 +0000
Subject: [PATCH] Check for GL errors after glClear and glDrawArrays.

These methods can cause errors so we should check for them.
https://www.khronos.org/registry/OpenGL-Refpages/es2.0/xhtml/glClear.xml
https://www.khronos.org/registry/OpenGL-Refpages/es2.0/xhtml/glDrawArrays.xml

PiperOrigin-RevId: 437218519
---
 .../androidx/media3/transformer/AdvancedFrameProcessor.java     | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libraries/transformer/src/main/java/androidx/media3/transformer/AdvancedFrameProcessor.java b/libraries/transformer/src/main/java/androidx/media3/transformer/AdvancedFrameProcessor.java
index b541145ad4..7fe753d1a2 100644
--- a/libraries/transformer/src/main/java/androidx/media3/transformer/AdvancedFrameProcessor.java
+++ b/libraries/transformer/src/main/java/androidx/media3/transformer/AdvancedFrameProcessor.java
@@ -127,8 +127,10 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
     glProgram.bindAttributesAndUniforms();
     GLES20.glClearColor(/* red= */ 0, /* green= */ 0, /* blue= */ 0, /* alpha= */ 0);
     GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT);
+    GlUtil.checkGlError();
     // The four-vertex triangle strip forms a quad.
     GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, /* first= */ 0, /* count= */ 4);
+    GlUtil.checkGlError();
   }
 
   @Override