public void init(GLAutoDrawable drawable) {
GL2 gl = drawable.getGL().getGL2();
glut = new GLUT();
//
gl.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
makeStripeImage();
gl.glPixelStorei(GL.GL_UNPACK_ALIGNMENT, 1);
gl.glGenTextures(1, texName, 0);
gl.glBindTexture(GL2.GL_TEXTURE_1D, texName[0]);
gl.glTexParameterf(GL2.GL_TEXTURE_1D, GL2.GL_TEXTURE_WRAP_S, GL2.GL_REPEAT);
gl.glTexParameterf(
GL2.GL_TEXTURE_1D, //
GL2.GL_TEXTURE_MAG_FILTER,
GL.GL_LINEAR);
gl.glTexParameterf(
GL2.GL_TEXTURE_1D, //
GL2.GL_TEXTURE_MIN_FILTER,
GL.GL_LINEAR);
gl.glTexImage1D(
GL2.GL_TEXTURE_1D,
0,
GL2.GL_RGBA,
stripeImageWidth, //
0,
GL2.GL_RGB,
GL.GL_UNSIGNED_BYTE,
stripeImageBuf);
gl.glTexEnvf(GL2.GL_TEXTURE_ENV, GL2.GL_TEXTURE_ENV_MODE, GL2.GL_MODULATE);
currentCoeff = xequalzero;
currentGenMode = GL2.GL_OBJECT_LINEAR;
currentPlane = GL2.GL_OBJECT_PLANE;
gl.glTexGeni(GL2.GL_S, GL2.GL_TEXTURE_GEN_MODE, GL2.GL_OBJECT_LINEAR);
gl.glTexGendv(GL2.GL_S, GL2.GL_OBJECT_PLANE, currentCoeff, 0);
// gl.glEnable(GL.GL_DEPTH_TEST);
gl.glDepthFunc(GL.GL_LESS);
gl.glEnable(GL2.GL_TEXTURE_GEN_S);
gl.glEnable(GL2.GL_TEXTURE_1D);
gl.glEnable(GL.GL_CULL_FACE);
gl.glEnable(GL2.GL_LIGHTING);
gl.glEnable(GL2.GL_LIGHT0);
gl.glEnable(GL2.GL_AUTO_NORMAL);
gl.glEnable(GL2.GL_NORMALIZE);
gl.glFrontFace(GL.GL_CW);
gl.glCullFace(GL.GL_BACK);
gl.glMaterialf(GL.GL_FRONT, GL2.GL_SHININESS, 64.0f);
}
public void renderObj(GL2 gl) {
gl.glPushMatrix();
gl.glEnable(GL2.GL_TEXTURE_2D);
gl.glTexParameterf(GL2.GL_TEXTURE_2D, GL2.GL_TEXTURE_MAG_FILTER, GL2.GL_NEAREST);
gl.glTexParameterf(GL2.GL_TEXTURE_2D, GL2.GL_TEXTURE_MIN_FILTER, GL2.GL_NEAREST);
texture.enable(gl);
texture.bind(gl);
gl.glDisable(GL2.GL_DEPTH_TEST);
gl.glColor4d(1, 1, 1, transparancy);
gl.glScalef(canvas.orthoCoordWidth / 2, canvas.orthoCoordWidth / 2 / canvas.aspectRatio, 1);
gl.glBegin(GL2.GL_QUADS);
gl.glTexCoord2f(0, 0);
gl.glVertex2f(-1, -1);
gl.glTexCoord2f(1, 0);
gl.glVertex2f(1, -1);
gl.glTexCoord2f(1, 1);
gl.glVertex2f(1, 1);
gl.glTexCoord2f(0, 1);
gl.glVertex2f(-1, 1);
gl.glEnd();
gl.glEnable(GL2.GL_DEPTH_TEST);
gl.glDisable(GL2.GL_TEXTURE_2D);
gl.glPopMatrix();
}
public boolean generateFBO(GL2 gl) {
if (fboWidth < 0 || fboHeight < 0) {
fboWidth = inputTexture.getWidth();
fboHeight = inputTexture.getHeight();
}
System.err.println("(********* in generateFBO...");
boolean fboUsed;
this.texture1 = TextureIO.newTexture(GL_TEXTURE_2D);
this.texture1.bind();
gl.glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
gl.glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
// gl.glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
// gl.glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE); // automatic mipmap
// gl.glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
// gl.glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
gl.glTexImage2D(
GL_TEXTURE_2D, 0, GL_RGBA, fboWidth, fboHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, null);
// gl.glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, fboWidth, fboHeight, 0, GL_RGB, GL_UNSIGNED_BYTE,
// null);
gl.glBindTexture(GL_TEXTURE_2D, 0);
this.texture2 = TextureIO.newTexture(GL_TEXTURE_2D);
this.texture2.bind();
gl.glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
gl.glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
// gl.glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
// gl.glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE); // automatic mipmap
// gl.glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
// gl.glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
gl.glTexImage2D(
GL_TEXTURE_2D, 0, GL_RGBA, fboWidth, fboHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, null);
// gl.glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, fboWidth, fboHeight, 0, GL_RGB, GL_UNSIGNED_BYTE,
// null);
gl.glBindTexture(GL_TEXTURE_2D, 0);
// create a renderbuffer object to store depth info
// int[] rboBindId = new int[1];
// gl.glGenRenderbuffersEXT(1, rboBindId, 0);
// this.rboId = rboBindId[0];
// gl.glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, this.rboId);
// gl.glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT, fboWidth, fboHeight);
// gl.glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);
// create a framebuffer object and attach the color texture and depth renderbuffer
int[] fboBindId = new int[1];
gl.glGenFramebuffers(1, fboBindId, 0);
this.fboId = fboBindId[0];
gl.glBindFramebuffer(GL_FRAMEBUFFER, this.fboId);
int textureLevel = 0; // not using mipmaps so only first level is available
// attach the texture to FBO color attachment point
gl.glFramebufferTexture2D(
GL_FRAMEBUFFER,
GL_COLOR_ATTACHMENT0,
GL_TEXTURE_2D,
this.texture1.getTextureObject(),
textureLevel);
// attach the renderbuffer to depth attachment point
// gl.glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT,
// GL_RENDERBUFFER_EXT, this.rboId);
// attach the texture to FBO color attachment point
gl.glFramebufferTexture2D(
GL_FRAMEBUFFER,
GL_COLOR_ATTACHMENT1,
GL_TEXTURE_2D,
this.texture2.getTextureObject(),
textureLevel);
// attach the renderbuffer to depth attachment point
// gl.glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT,
// GL_RENDERBUFFER_EXT, this.rboId);
// check FBO status
int status = gl.glCheckFramebufferStatus(GL_FRAMEBUFFER);
if (status != GL_FRAMEBUFFER_COMPLETE) {
fboUsed = false;
System.out.println("GL_FRAMEBUFFER_COMPLETE_EXT failed, CANNOT use FBO\n");
} else {
fboUsed = true;
System.out.printf("GL_FRAMEBUFFER_COMPLETE_EXT OK, using FBO\n");
System.out.printf("fbo offScreenWidth =%d\n", fboWidth);
System.out.printf("fbo offScreenHeight =%d\n", fboHeight);
System.out.printf("fbo texture1 id=%d\n", this.texture1.getTextureObject());
System.out.printf("fbo texture2 id=%d\n", this.texture2.getTextureObject());
System.out.printf("fbo id=%d\n", fboId);
System.out.printf("fbo's rbo id=%d\n", rboId);
}
// switch back to window-system-provided framebuffer
gl.glBindFramebuffer(GL_FRAMEBUFFER, 0);
return fboUsed;
}
