Modern JOGL, simple texture example
Locked
Modern JOGL, simple texture example
 
|
This post was updated on .
Hi,
I didnt managed to find a simple and clear example regarding using texture with modern JOGL This it what I think it should be the right way, but it's not working and I dont know why package test; /* * To change this template, choose Tools | Templates * and open the template in the editor. */ import glsl.GLSLProgramObject; import com.jogamp.opengl.util.GLBuffers; import com.jogamp.opengl.util.glsl.ShaderUtil; import com.jogamp.opengl.util.texture.Texture; import com.jogamp.opengl.util.texture.TextureIO; import java.awt.Frame; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import java.io.IOException; import java.nio.FloatBuffer; import java.nio.IntBuffer; import java.util.logging.Level; import java.util.logging.Logger; import javax.media.opengl.GL3; import javax.media.opengl.GLAutoDrawable; import javax.media.opengl.GLCapabilities; import javax.media.opengl.GLEventListener; import javax.media.opengl.GLException; import javax.media.opengl.GLProfile; import javax.media.opengl.awt.GLCanvas; /** * * @author gbarbieri */ public class Test implements GLEventListener { private int imageWidth = 800; private int imageHeight = 600; private GLCanvas canvas; private GLSLProgramObject programObject; private int[] vertexBufferObject = new int[1]; private int[] vertexArrayObject = new int[1]; private float[] vertexData = new float[]{ 0.25f, 0.25f, 0.75f, 1.0f, 0.25f, -0.25f, 0.75f, 1.0f, -0.25f, -0.25f, 0.75f, 1.0f, -0.25f, 0.25f, 0.75f, 1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f}; private String shadersFilepath = "/tut04/shaders/"; private Texture texture; private int textureUnLoc; /** * @param args the command line arguments */ public static void main(String[] args) { Test test = new Test(); Frame frame = new Frame("Test"); frame.add(test.getCanvas()); frame.setSize(test.getCanvas().getWidth(), test.getCanvas().getHeight()); frame.addWindowListener(new WindowAdapter() { @Override public void windowClosing(WindowEvent windowEvent) { System.exit(0); } }); frame.setVisible(true); } public Test() { initGL(); } private void initGL() { GLProfile profile = GLProfile.getDefault(); GLCapabilities capabilities = new GLCapabilities(profile); canvas = new GLCanvas(capabilities); canvas.setSize(imageWidth, imageHeight); canvas.addGLEventListener(this); } @Override public void init(GLAutoDrawable glad) { System.out.println("init"); canvas.setAutoSwapBufferMode(false); GL3 gl3 = glad.getGL().getGL3(); buildShaders(gl3); initializeVertexBuffer(gl3); texture = initializeTexture(gl3); gl3.glGenVertexArrays(1, IntBuffer.wrap(vertexArrayObject)); gl3.glBindVertexArray(vertexArrayObject[0]); gl3.glEnable(GL3.GL_CULL_FACE); gl3.glCullFace(GL3.GL_BACK); gl3.glFrontFace(GL3.GL_CW); } @Override public void dispose(GLAutoDrawable glad) { System.out.println("dispose"); } @Override public void display(GLAutoDrawable glad) { System.out.println("display"); GL3 gl3 = glad.getGL().getGL3(); gl3.glClearColor(0.0f, 0.0f, 0.0f, 1.0f); gl3.glClear(GL3.GL_COLOR_BUFFER_BIT); programObject.bind(gl3); { gl3.glBindBuffer(GL3.GL_ARRAY_BUFFER, vertexBufferObject[0]); gl3.glEnableVertexAttribArray(0); gl3.glEnableVertexAttribArray(1); { gl3.glActiveTexture(GL3.GL_TEXTURE0); texture.enable(gl3); texture.bind(gl3); gl3.glUniform1i(textureUnLoc, 0); gl3.glVertexAttribPointer(0, 4, GL3.GL_FLOAT, false, 0, 0); gl3.glVertexAttribPointer(1, 2, GL3.GL_FLOAT, false, 0, 4 * 4 * 4); gl3.glDrawArrays(GL3.GL_QUADS, 0, 4); texture.disable(gl3); } gl3.glDisableVertexAttribArray(0); gl3.glDisableVertexAttribArray(1); } programObject.unbind(gl3); glad.swapBuffers(); } @Override public void reshape(GLAutoDrawable glad, int x, int y, int w, int h) { System.out.println("reshape() x: " + x + " y: " + y + " width: " + w + " height: " + h); GL3 gl3 = glad.getGL().getGL3(); gl3.glViewport(x, y, w, h); } private void buildShaders(GL3 gl3) { System.out.print("Building shaders..."); programObject = new GLSLProgramObject(gl3); programObject.attachVertexShader(gl3, shadersFilepath + "OrthoWithOffset_VS.glsl"); programObject.attachFragmentShader(gl3, shadersFilepath + "StandardColor_FS.glsl"); programObject.initializeProgram(gl3, true); textureUnLoc = gl3.glGetUniformLocation(programObject.getProgId(), "myTexture"); System.out.println("ok"); } private void initializeVertexBuffer(GL3 gl3) { gl3.glGenBuffers(1, IntBuffer.wrap(vertexBufferObject)); gl3.glBindBuffer(GL3.GL_ARRAY_BUFFER, vertexBufferObject[0]); { FloatBuffer buffer = GLBuffers.newDirectFloatBuffer(vertexData); gl3.glBufferData(GL3.GL_ARRAY_BUFFER, vertexData.length * 4, buffer, GL3.GL_STATIC_DRAW); } gl3.glBindBuffer(GL3.GL_ARRAY_BUFFER, 0); } private Texture initializeTexture(GL3 gl3) { Texture t = null; try { t = TextureIO.newTexture(this.getClass().getResource("data/Texture.jpg"), false, ".jpg"); t.setTexParameteri(gl3, GL3.GL_TEXTURE_MIN_FILTER, GL3.GL_LINEAR); t.setTexParameteri(gl3, GL3.GL_TEXTURE_MAG_FILTER, GL3.GL_LINEAR); t.setTexParameteri(gl3, GL3.GL_TEXTURE_WRAP_S, GL3.GL_CLAMP_TO_EDGE); t.setTexParameteri(gl3, GL3.GL_TEXTURE_WRAP_T, GL3.GL_CLAMP_TO_EDGE); } catch (IOException | GLException ex) { Logger.getLogger(Test.class.getName()).log(Level.SEVERE, null, ex); } return t; } public GLCanvas getCanvas() { return canvas; } public void setCanvas(GLCanvas canvas) { this.canvas = canvas; } } Vertex Shader #version 330 layout (location = 0) in vec4 position; layout (location = 1) in vec2 vertexUV; out vec2 fragmentUV; void main() { gl_Position = position; fragmentUV = vertexUV; } Fragment Shader #version 330 in vec2 fragmentUV; out vec4 outputColor; uniform sampler2D myTexture; void main() { //outputColor = new vec4(1.0f, 0.0f, 0.0f, 1.0f); outputColor = texture(myTexture, fragmentUV).rgb; } This is what I see  and this is the texture I should see applied on the quad  |
Re: Modern JOGL, simple texture example
|
You have a faulty assignment of different type in the fragment shader. outputColor is a vec4 while you tried to pass it a "vec3" (.rgb) Use: outputColor = texture(myTexture, fragmentUV).rgba; It worked for me: 
|
Re: Modern JOGL, simple texture example
|
|
Re: Modern JOGL, simple texture example
|
|
In reply to this post by Xerxes Rånby
O.o ... I fixed as you said but on mine its still not working.. Are you running the same code? |
Re: Modern JOGL, simple texture example
|
|
Re: Modern JOGL, simple texture example
|
|
Re: Modern JOGL, simple texture example
|
|
| Free forum by Nabble | Edit this page |