From ddb53592e6633ed2b27519790ca15e07221942ff Mon Sep 17 00:00:00 2001
From: Michael Bien <mbien@fh-landshut.de>
Date: Sun, 22 Aug 2010 21:05:13 +0200
Subject: added junit test for bug 407 (thanks to Matt at the mailinglist).

---
 .../glsl/TransformFeedbackVeryingsBug407Test.java  | 132 +++++++++++++++++++++
 1 file changed, 132 insertions(+)
 create mode 100644 src/junit/com/jogamp/test/junit/jogl/glsl/TransformFeedbackVeryingsBug407Test.java

(limited to 'src')

diff --git a/src/junit/com/jogamp/test/junit/jogl/glsl/TransformFeedbackVeryingsBug407Test.java b/src/junit/com/jogamp/test/junit/jogl/glsl/TransformFeedbackVeryingsBug407Test.java
new file mode 100644
index 000000000..1bb513bf3
--- /dev/null
+++ b/src/junit/com/jogamp/test/junit/jogl/glsl/TransformFeedbackVeryingsBug407Test.java
@@ -0,0 +1,132 @@
+package com.jogamp.test.junit.jogl.glsl;
+
+import java.io.ByteArrayOutputStream;
+import java.io.PrintStream;
+
+import javax.media.opengl.GL3;
+import javax.media.opengl.GLCapabilities;
+import javax.media.opengl.GLContext;
+import javax.media.opengl.GLDrawable;
+import javax.media.opengl.GLDrawableFactory;
+import javax.media.opengl.GLProfile;
+
+import org.junit.After;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+
+import com.jogamp.newt.Display;
+import com.jogamp.newt.NewtFactory;
+import com.jogamp.newt.Screen;
+import com.jogamp.newt.Window;
+import com.jogamp.opengl.util.glsl.ShaderUtil;
+
+
+/**
+ * Bug 'Function glTransformFeedbackVaryings incorrectly passes argument'
+ * http://jogamp.org/bugzilla/show_bug.cgi?id=407
+ */
+public class TransformFeedbackVeryingsBug407Test {
+
+    static {
+        //NativeUtil.preloadNativeLibs(); // internal method
+        GLProfile.initSingleton();
+    }
+    private GLContext context;
+    private String VERTEX_SHADER_TEXT;
+
+    @Before
+    public void setUp() {
+        VERTEX_SHADER_TEXT =
+                  "#version 330                           \n"
+                + "                                       \n"
+                + "out vec4 Position;                     \n"
+                + "                                       \n"
+                + "void main() {                          \n"
+                + "  Position = vec4(1.0, 1.0, 1.0, 1.0); \n"
+                + "}                                      \n";
+
+        GLCapabilities caps;
+        Window window;
+        GLDrawable drawable;
+
+        GLProfile glp = GLProfile.get(GLProfile.GL3);
+        caps = new GLCapabilities(glp);
+
+        caps.setOnscreen(true);
+        caps.setDoubleBuffered(true);
+
+        Display display = NewtFactory.createDisplay(null); // local display
+        Screen screen = NewtFactory.createScreen(display, 0); // screen 0
+
+        window = NewtFactory.createWindow(screen, caps, true);
+        window.setSize(800, 600);
+        window.setVisible(true);
+
+        drawable = GLDrawableFactory.getFactory(glp).createGLDrawable(window);
+        drawable.setRealized(true);
+
+        context = drawable.createContext(null);
+
+        context.makeCurrent();
+    }
+
+    @After
+    public void tearDown() {
+        context.release();
+    }
+
+    private int getShader(GL3 gl, String text, int type) {
+        int shaderProgram = gl.glCreateProgram();
+
+        int vertShader = gl.glCreateShader(type);
+
+        String[] lines = new String[]{text};
+        int[] lengths = new int[]{lines[0].length()};
+        gl.glShaderSource(vertShader, lines.length, lines, lengths, 0);
+        gl.glCompileShader(vertShader);
+        gl.glAttachShader(shaderProgram, vertShader);
+
+        return shaderProgram;
+    }
+
+    @Test
+    public void testGlTransformFeedbackVaryings_WhenVarNameOK() {
+        // given
+
+        GL3 gl = context.getGL().getGL3();
+        int shaderProgram = getShader(gl, VERTEX_SHADER_TEXT, GL3.GL_VERTEX_SHADER);
+        String[] vars = new String[]{"Position"};
+
+        // when
+
+        gl.glTransformFeedbackVaryings(shaderProgram, 1, vars, GL3.GL_SEPARATE_ATTRIBS);
+        gl.glLinkProgram(shaderProgram);
+
+        // then
+
+        Assert.assertTrue(ShaderUtil.isProgramValid(gl, shaderProgram, System.out));
+        Assert.assertEquals(GL3.GL_NO_ERROR, gl.glGetError());
+    }
+
+    @Test
+    public void testGlTransformFeedbackVaryings_WhenVarNameWrong() {
+        // given
+
+        GL3 gl = context.getGL().getGL3();
+        int shaderProgram = getShader(gl, VERTEX_SHADER_TEXT, GL3.GL_VERTEX_SHADER);
+        String[] vars = new String[]{"PPPosition"};
+
+        // when
+
+        gl.glTransformFeedbackVaryings(shaderProgram, 1, vars, GL3.GL_SEPARATE_ATTRIBS);
+        gl.glLinkProgram(shaderProgram);
+
+        // then
+
+        ByteArrayOutputStream baos = new ByteArrayOutputStream();
+        Assert.assertFalse(ShaderUtil.isProgramValid(gl, shaderProgram, new PrintStream(baos)));
+        Assert.assertEquals(GL3.GL_NO_ERROR, gl.glGetError());
+        Assert.assertTrue(baos.toString().contains("(named PPPosition)"));
+    }
+}
-- 
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