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-rw-r--r--src/jogl/classes/com/jogamp/opengl/util/glsl/ShaderProgram.java6
1 files changed, 4 insertions, 2 deletions
diff --git a/src/jogl/classes/com/jogamp/opengl/util/glsl/ShaderProgram.java b/src/jogl/classes/com/jogamp/opengl/util/glsl/ShaderProgram.java
index 2f40363d6..565b5ab1c 100644
--- a/src/jogl/classes/com/jogamp/opengl/util/glsl/ShaderProgram.java
+++ b/src/jogl/classes/com/jogamp/opengl/util/glsl/ShaderProgram.java
@@ -95,8 +95,10 @@ public class ShaderProgram {
}
allShaderCode.clear();
attachedShaderCode.clear();
- gl.glDeleteProgram(shaderProgram);
- shaderProgram=-1;
+ if(0<=shaderProgram) {
+ gl.glDeleteProgram(shaderProgram);
+ shaderProgram=-1;
+ }
}
//