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package com.jogamp.opengl.test.junit.jogl.demos.gl3;
import java.io.IOException;
import java.io.InputStream;
import java.net.URLConnection;
import java.nio.FloatBuffer;
import com.jogamp.opengl.GL;
import com.jogamp.opengl.GL2ES2;
import com.jogamp.opengl.GL3;
import com.jogamp.opengl.GLAutoDrawable;
import com.jogamp.opengl.GLEventListener;
import com.jogamp.opengl.GLException;
import com.jogamp.opengl.GLUniformData;
import com.jogamp.opengl.fixedfunc.GLMatrixFunc;
import com.jogamp.common.util.IOUtil;
import com.jogamp.opengl.util.GLArrayDataServer;
import com.jogamp.opengl.util.PMVMatrix;
import com.jogamp.opengl.util.glsl.ShaderCode;
import com.jogamp.opengl.util.glsl.ShaderProgram;
import com.jogamp.opengl.util.glsl.ShaderState;
import com.jogamp.opengl.util.glsl.ShaderUtil;
import com.jogamp.opengl.util.texture.Texture;
import com.jogamp.opengl.util.texture.TextureCoords;
import com.jogamp.opengl.util.texture.TextureData;
import com.jogamp.opengl.util.texture.TextureIO;
/**
* JOGL Geometry ShaderCode test case using OpenGL 3.2 core profile features only.
* <p>
* Demonstrates <code>pass through</code> and <code>XYZ flipping</code>
* geometry shader.
* </p>
* <p>
* If the <code>XYZ flipping</code> geometry shader functions properly,
* the texture will be flipped horizontally and vertically.
* </p>
*
* @author Chuck Ritola December 2012
* @author Sven Gothel (GL3 core, pass-though, core geometry shader)
*/
public class GeomShader01TextureGL3 implements GLEventListener {
private final int geomShader;
private Texture texture;
private ShaderState st;
private PMVMatrix pmvMatrix;
private GLUniformData pmvMatrixUniform;
private GLArrayDataServer interleavedVBO;
static final String shaderBasename = "texture01_xxx";
static final String[] geomShaderBaseNames = new String[] { "passthrough01_xxx", "flipXYZ01_xxx" };
public GeomShader01TextureGL3(final int geomShader) {
this.geomShader = geomShader;
}
@Override
public void init(final GLAutoDrawable drawable) {
{
final GL gl = drawable.getGL();
System.err.println("Init - START - useGeomShader "+geomShader+" -> "+geomShaderBaseNames[geomShader]);
System.err.println("GL_VENDOR: " + gl.glGetString(GL.GL_VENDOR));
System.err.println("GL_RENDERER: " + gl.glGetString(GL.GL_RENDERER));
System.err.println("GL_VERSION: " + gl.glGetString(GL.GL_VERSION));
System.err.println("GL GLSL: "+gl.hasGLSL()+", has-compiler-func: "+gl.isFunctionAvailable("glCompileShader")+", version "+(gl.hasGLSL() ? gl.glGetString(GL2ES2.GL_SHADING_LANGUAGE_VERSION) : "none"));
System.err.println("GL Profile: "+gl.getGLProfile());
System.err.println("GL Renderer Quirks:" + gl.getContext().getRendererQuirks().toString());
System.err.println("GL:" + gl + ", " + gl.getContext().getGLVersion());
if( !gl.isGL3() ) {
throw new RuntimeException("GL object not a GL3 core compatible profile: "+gl);
}
if( !ShaderUtil.isGeometryShaderSupported(gl) ) {
throw new RuntimeException("GL object not >= 3.2, i.e. no geometry shader support.: "+gl);
}
}
final GL3 gl = drawable.getGL().getGL3();
final ShaderProgram sp;
{
final ShaderCode vs, gs, fs;
vs = ShaderCode.create(gl, GL2ES2.GL_VERTEX_SHADER, this.getClass(),
"shader", "shader/bin", shaderBasename, true);
gs = ShaderCode.create(gl, GL3.GL_GEOMETRY_SHADER, this.getClass(),
"shader", "shader/bin", geomShaderBaseNames[geomShader], true);
fs = ShaderCode.create(gl, GL2ES2.GL_FRAGMENT_SHADER, this.getClass(),
"shader", "shader/bin", shaderBasename, true);
vs.defaultShaderCustomization(gl, true, true);
gs.defaultShaderCustomization(gl, true, true);
fs.defaultShaderCustomization(gl, true, true);
sp = new ShaderProgram();
sp.add(gl, vs, System.err);
sp.add(gl, gs, System.err);
sp.add(gl, fs, System.err);
if(!sp.link(gl, System.err)) {
throw new GLException("Couldn't link program: "+sp);
}
}
st=new ShaderState();
st.attachShaderProgram(gl, sp, true);
// setup mgl_PMVMatrix
pmvMatrix = new PMVMatrix();
pmvMatrix.glMatrixMode(GLMatrixFunc.GL_PROJECTION);
pmvMatrix.glLoadIdentity();
pmvMatrix.glMatrixMode(GLMatrixFunc.GL_MODELVIEW);
pmvMatrix.glLoadIdentity();
pmvMatrixUniform = new GLUniformData("mgl_PMVMatrix", 4, 4, pmvMatrix.glGetPMvMatrixf()); // P, Mv
st.ownUniform(pmvMatrixUniform);
st.uniform(gl, pmvMatrixUniform);
st.ownUniform(pmvMatrixUniform);
if(!st.uniform(gl, pmvMatrixUniform)) {
throw new GLException("Error setting PMVMatrix in shader: "+st);
}
if(!st.uniform(gl, new GLUniformData("mgl_ActiveTexture", 0))) {
throw new GLException("Error setting mgl_ActiveTexture in shader: "+st);
}
try {
texture = createTestTexture(gl);
} catch (final IOException e) {
throw new RuntimeException(e);
}
if(null == texture) {
throw new RuntimeException("Could not load test texture");
}
// Tri order:
// TL, BL, BR
// TL, TR, BR
{
int i=0;
final TextureCoords tc = texture.getImageTexCoords();
s_triTexCoords[i++] = tc.left(); s_triTexCoords[i++] = tc.top();
s_triTexCoords[i++] = tc.left(); s_triTexCoords[i++] = tc.bottom();
s_triTexCoords[i++] = tc.right(); s_triTexCoords[i++] = tc.bottom();
s_triTexCoords[i++] = tc.left(); s_triTexCoords[i++] = tc.top();
s_triTexCoords[i++] = tc.right(); s_triTexCoords[i++] = tc.top();
s_triTexCoords[i++] = tc.right(); s_triTexCoords[i++] = tc.bottom();
}
interleavedVBO = GLArrayDataServer.createGLSLInterleaved(2+4+2, GL.GL_FLOAT, false, 3*6, GL.GL_STATIC_DRAW);
{
interleavedVBO.addGLSLSubArray("mgl_Vertex", 2, GL.GL_ARRAY_BUFFER);
interleavedVBO.addGLSLSubArray("mgl_Color", 4, GL.GL_ARRAY_BUFFER);
interleavedVBO.addGLSLSubArray("mgl_MultiTexCoord", 2, GL.GL_ARRAY_BUFFER);
final FloatBuffer ib = (FloatBuffer)interleavedVBO.getBuffer();
for(int i=0; i<6; i++) {
ib.put(s_triVertices, i*2, 2);
ib.put(s_triColors, i*4, 4);
ib.put(s_triTexCoords, i*2, 2);
}
}
interleavedVBO.seal(gl, true);
interleavedVBO.enableBuffer(gl, false);
st.ownAttribute(interleavedVBO, true);
gl.glClearColor(0f, 0f, 0f, 0f);
gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
st.useProgram(gl, false);
}
private Texture createTestTexture(final GL3 gl) throws IOException {
final URLConnection urlConn = IOUtil.getResource("../../util/texture/test-ntscN_3-01-160x90.png", this.getClass().getClassLoader(), this.getClass());
if(null == urlConn) { return null; }
final InputStream istream = urlConn.getInputStream();
if(null == istream) { return null; }
final TextureData texData = TextureIO.newTextureData(gl.getGLProfile(), istream, false /* mipmap */, TextureIO.PNG);
final Texture res = TextureIO.newTexture(gl, texData);
texData.destroy();
return res;
}
@Override
public void dispose(final GLAutoDrawable drawable) {
final GL3 gl = drawable.getGL().getGL3();
if(null!=texture) {
texture.disable(gl);
texture.destroy(gl);
}
if(null != st) {
pmvMatrixUniform = null;
pmvMatrix=null;
st.destroy(gl);
st=null;
}
}
@Override
public void reshape(final GLAutoDrawable drawable, final int x, final int y, final int width, final int height) {
final GL3 gl = drawable.getGL().getGL3();
gl.setSwapInterval(1);
// Clear background to white
gl.glClearColor(1.0f, 1.0f, 1.0f, 0.4f);
if(null != st) {
pmvMatrix.glMatrixMode(GLMatrixFunc.GL_PROJECTION);
pmvMatrix.glLoadIdentity();
pmvMatrix.glOrthof(-1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 10.0f);
pmvMatrix.glMatrixMode(GLMatrixFunc.GL_MODELVIEW);
pmvMatrix.glLoadIdentity();
st.useProgram(gl, true);
st.uniform(gl, pmvMatrixUniform);
st.useProgram(gl, false);
}
}
@Override
public void display(final GLAutoDrawable drawable) {
final GL3 gl = drawable.getGL().getGL3();
gl.glClear(GL.GL_DEPTH_BUFFER_BIT | GL.GL_COLOR_BUFFER_BIT);
if(null != st) {
//Draw the image as a pseudo-quad using two triangles
st.useProgram(gl, true);
interleavedVBO.enableBuffer(gl, true);
gl.glActiveTexture(GL.GL_TEXTURE0);
texture.enable(gl);
texture.bind(gl);
gl.glDrawArrays(GL.GL_TRIANGLES, 0, 6);
texture.disable(gl);
interleavedVBO.enableBuffer(gl, false);
st.useProgram(gl, false);
}
}//end display()
private static final float[] s_triVertices = {
-1f, 1f, // TL
-1f, -1f, // BL
1f, -1f, // BR
-1f, 1f, // TL
1f, 1f, // TR
1f, -1f // BR
};
private static final float[] s_triColors = {
1f, 1f, 1f, 1f,
1f, 1f, 1f, 1f,
1f, 1f, 1f, 1f,
1f, 1f, 1f, 1f,
1f, 1f, 1f, 1f,
1f, 1f, 1f, 1f
};
private static final float[] s_triTexCoords = {
0f, 1f, // TL
0f, 0f, // BL
1f, 0f, // BR
0f, 1f, // TL
1f, 1f, // TR
1f, 0f // BR
};
}//end Test