void GetTextureData()
{
//Setup FBO
		// First we bind the FBO so we can render to it
		glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo);
		
		// Save the view port and set it to the size of the texture
		glPushAttrib(GL_VIEWPORT_BIT);
		glViewport(0,0,width,height);
		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);	// Clear The Screen And The Depth Buffer
		glLoadIdentity();									// Reset The View

		PreDisplay();			//Setup to draw in ortho
		glBindTexture(GL_TEXTURE_2D, imageTexture[0]);
 		glEnable(GL_TEXTURE_2D);
		glDisable(GL_LIGHTING);
		glDisable(GL_DEPTH_TEST);	//Disable depth testing and masking
		glDepthMask(GL_FALSE);

		float dimensionsNeg = 0.0f;
		float dimensionsPos = 1.0f;

		PreDisplay();			//Setup to draw in ortho
			glColor3f(1.0f,1.0f,1.0f);
			glBegin(GL_QUADS);
				glTexCoord2f(0.0f, 0.0f); glVertex3f(dimensionsNeg, dimensionsNeg, 0.0f);
				glTexCoord2f(0.0f, 1.0f); glVertex3f(dimensionsNeg, dimensionsPos, 0.0f);
				glTexCoord2f(1.0f, 1.0f); glVertex3f(dimensionsPos, dimensionsPos, 0.0f);
				glTexCoord2f(1.0f, 0.0f); glVertex3f(dimensionsPos, dimensionsNeg, 0.0f);
			glEnd();
		ViewPerspective();

			for(int i = 0 ; i < N ; i++)
			{
				for(int j = 0 ; j < N ; j++)
				{
					glReadPixels(i,j,1,1,GL_RED, GL_FLOAT, &dens_prev_r[IX(i,j)]);
					glReadPixels(i,j,1,1,GL_GREEN, GL_FLOAT, &dens_prev_g[IX(i,j)]);
					glReadPixels(i,j,1,1,GL_BLUE, GL_FLOAT, &dens_prev_b[IX(i,j)]);
					dens_r[IX(i,j)] = dens_prev_r[IX(i,j)];
					dens_g[IX(i,j)] = dens_prev_g[IX(i,j)];
					dens_b[IX(i,j)] = dens_prev_b[IX(i,j)];

				}
			}

		// Restore old view port and set rendering back to default frame buffer
		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);	// Clear The Screen And The Depth Buffer
		glPopAttrib();
		glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);


}

void SetupFBO(){	// Setup our FBO	glGenFramebuffersEXT(1, &fbo);	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo);	// Create the render buffer for depth		glGenRenderbuffersEXT(1, &depthBuffer);	glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, depthBuffer);	glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT, width, height);	// Now setup a texture to render to	glGenTextures(1, &img);	glBindTexture(GL_TEXTURE_2D, img);		glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8,  width, height, 0, GL_RED, GL_FLOAT, NULL);		glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);		glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);		glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);		glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);//  The following 3 lines enable mipmap filtering and generate the mipmap data so rendering works//	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);//	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);//	glGenerateMipmapEXT(GL_TEXTURE_2D);	// And attach it to the FBO so we can render to it	glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, img, 0);	// Attach the depth render buffer to the FBO as it's depth attachment	glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, depthBuffer);		GLenum status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);	if(status != GL_FRAMEBUFFER_COMPLETE_EXT)		exit(1);		glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);	// Unbind the FBO for now}