I need some help with FBOs, I am trying them for the first time, and I get the swing of it but I am not succeeding in programming a class for it.
Currently this is with my FBO class:
As you can see it removes everything rendered before it, and does not render the things bound to it.
I am applying what I made this way:
public LightManager(World world) {
try {
fboLight = new FBO();
logo = TextureManager.loadTexture("/revereor/logo/logo");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
@Override
public void render() {
Point pt = GDisplay.getCamera().getFOV();
fboLight.bind();
glPushMatrix();
{
glTranslated(Game.getGame().player.x, Game.getGame().player.y, 0);
logo.bind();
glBegin(GL_QUADS);
{
glTexCoord2f(0, 0);
glVertex2d(-(50 / 2), 50 / 2);
glTexCoord2f(1, 0);
glVertex2d((50 / 2), 50 / 2);
glTexCoord2f(1, 1);
glVertex2d((50 / 2), -50 / 2);
glTexCoord2f(0, 1);
glVertex2d(-(50 / 2), -50 / 2);
}
glEnd();
}
glPopMatrix();
fboLight.release();
fboLight.render();
}
and I have this:
package com.revereor.game.render;
import static org.lwjgl.opengl.EXTFramebufferObject.GL_COLOR_ATTACHMENT0_EXT;
import static org.lwjgl.opengl.EXTFramebufferObject.GL_DEPTH_ATTACHMENT_EXT;
import static org.lwjgl.opengl.EXTFramebufferObject.GL_FRAMEBUFFER_EXT;
import static org.lwjgl.opengl.EXTFramebufferObject.GL_RENDERBUFFER_EXT;
import static org.lwjgl.opengl.EXTFramebufferObject.glBindFramebufferEXT;
import static org.lwjgl.opengl.EXTFramebufferObject.glBindRenderbufferEXT;
import static org.lwjgl.opengl.EXTFramebufferObject.glFramebufferRenderbufferEXT;
import static org.lwjgl.opengl.EXTFramebufferObject.glFramebufferTexture2DEXT;
import static org.lwjgl.opengl.EXTFramebufferObject.glGenFramebuffersEXT;
import static org.lwjgl.opengl.EXTFramebufferObject.glGenRenderbuffersEXT;
import static org.lwjgl.opengl.EXTFramebufferObject.glRenderbufferStorageEXT;
import static org.lwjgl.opengl.GL11.*;
import java.awt.Point;
import org.lwjgl.opengl.EXTFramebufferObject;
import org.lwjgl.opengl.GL11;
import org.lwjgl.opengl.GL14;
import org.lwjgl.opengl.GLContext;
import com.revereor.game.display.GDisplay;
import com.revereor.game.main.log.Logger;
public class FBO {
private int framebufferID, colorTextureID, depthRenderBufferID;
public FBO(){
init();
}
private void init(){
boolean FBOEnabled = GLContext.getCapabilities().GL_EXT_framebuffer_object;
if(!FBOEnabled)
Logger.printerr("Frame Buffer Objects not supported, this WILL cause problems.");
framebufferID = glGenFramebuffersEXT();
colorTextureID = glGenTextures();
depthRenderBufferID = glGenRenderbuffersEXT();
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, framebufferID);
// initialize color texture
glBindTexture(GL_TEXTURE_2D, colorTextureID);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, 512, 512, 0,GL_RGBA, GL_INT, (java.nio.ByteBuffer) null);
glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT,GL_COLOR_ATTACHMENT0_EXT,GL_TEXTURE_2D, colorTextureID, 0);
// initialize depth renderbuffer
glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, depthRenderBufferID);
glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL14.GL_DEPTH_COMPONENT24, 512, 512);
glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT,GL_DEPTH_ATTACHMENT_EXT,GL_RENDERBUFFER_EXT, depthRenderBufferID);
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
}
public void bind(){
glViewport (0, 0, GDisplay.getCamera().getFovX(), GDisplay.getCamera().getFovY());
glBindTexture(GL_TEXTURE_2D, 0);
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, framebufferID);
glClearColor (0.0f, 0.0f, 0.0f, 1.0f);
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glTranslatef (0.0f, 0.0f, -6);
}
public void release(){
glEnable(GL_TEXTURE_2D);
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
}
public void render(){
glEnable(GL_TEXTURE_2D);
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
glLoadIdentity ();
glTranslatef (0.0f, 0.0f, -6);
glColor3f(1, 1, 1);
GL11.glPushMatrix();
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, colorTextureID);
glBegin(GL_QUADS);
glTexCoord2f(0.0f, 0.0f); glVertex2i(0, 0);
glTexCoord2f(1.0f, 0.0f); glVertex2i(GDisplay.camera.getFovX(), 0);
glTexCoord2f(1.0f, 1.0f); glVertex2i(GDisplay.camera.getFovX(), GDisplay.camera.getFovY());
glTexCoord2f(0.0f, 1.0f); glVertex2i(0, GDisplay.camera.getFovY());
glEnd();
glPopMatrix();
}
}
Anyone have some experience, tips, or directions to go with this?
