Android GlUtil: Add helper functions generateTexture/deleteTexture

talk/app/webrtc/java/android/org/webrtc/GlUtil.java

Index: talk/app/webrtc/java/android/org/webrtc/GlUtil.java
diff --git a/talk/app/webrtc/java/android/org/webrtc/GlUtil.java b/talk/app/webrtc/java/android/org/webrtc/GlUtil.java
index 196384edc9b1a6f0cd0312761e198056054678d3..de5dadbc88c4dc7e4ff25162fb61dfa84bdce7a1 100644
--- a/talk/app/webrtc/java/android/org/webrtc/GlUtil.java
+++ b/talk/app/webrtc/java/android/org/webrtc/GlUtil.java
@@ -58,4 +58,28 @@ public class GlUtil {
     fb.position(0);
     return fb;
   }
+
+  /**
+   * Generate texture with standard parameters.
+   */
+  public static int generateTexture(int target) {
+    final int textureArray[] = new int[1];
+    GLES20.glGenTextures(1, textureArray, 0);
+    final int textureId = textureArray[0];
+    GLES20.glBindTexture(target, textureId);
+    GLES20.glTexParameterf(target, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_LINEAR);
+    GLES20.glTexParameterf(target, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_LINEAR);
+    GLES20.glTexParameterf(target, GLES20.GL_TEXTURE_WRAP_S, GLES20.GL_CLAMP_TO_EDGE);
+    GLES20.glTexParameterf(target, GLES20.GL_TEXTURE_WRAP_T, GLES20.GL_CLAMP_TO_EDGE);
+    checkNoGLES2Error("generateTexture");
+    return textureId;
+  }
+
+  public static void deleteTexture(int textureId) {
+    if (textureId != -1) {
+      final int textureArray[] = new int[1];
+      textureArray[0] = textureId;
+      GLES20.glDeleteTextures(1, textureArray, 0);

[hbos, 2015/09/02 08:57:54]

If you want this to be a one-liner you can do "new int[] { textureId }".

[magjed_webrtc, 2015/09/02 10:15:39]

Cool, thanks. This defeats the purpose of this function. I will just inline it
instead to make it more transparent.

+    }
+  }
 }