You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
43 lines
1.4 KiB
43 lines
1.4 KiB
//
|
|
// fbo.mm
|
|
// J
|
|
//
|
|
// Created by Joshua Moerman on 8/28/11.
|
|
// Copyright 2011 Vadovas. All rights reserved.
|
|
//
|
|
|
|
#import "fbo.h"
|
|
|
|
#import <QuartzCore/QuartzCore.h>
|
|
|
|
namespace J {
|
|
fbo::fbo(EAGLContext* context, CAEAGLLayer* layer) : width(0), height(0), fbo_number(0), renderbuffers(), texture_id(0){
|
|
glGenFramebuffers(1, &fbo_number);
|
|
bind();
|
|
|
|
// much like create_attach_renderbuffer(), but it's not created, it's given by the context.
|
|
{
|
|
GLuint buffer;
|
|
glGenRenderbuffers(1, &buffer);
|
|
glBindRenderbuffer(GL_RENDERBUFFER, buffer);
|
|
[context renderbufferStorage:GL_RENDERBUFFER fromDrawable:layer];
|
|
glGetRenderbufferParameteriv(GL_RENDERBUFFER, GL_RENDERBUFFER_WIDTH, &width);
|
|
glGetRenderbufferParameteriv(GL_RENDERBUFFER, GL_RENDERBUFFER_HEIGHT, &height);
|
|
|
|
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, buffer);
|
|
|
|
renderbuffers[GL_COLOR_ATTACHMENT0] = buffer;
|
|
}
|
|
|
|
//this will cause a INVALID_OPERATION in bind().
|
|
//create_attach_renderbuffer(GL_DEPTH_COMPONENT16, GL_DEPTH_ATTACHMENT);
|
|
|
|
check_error();
|
|
check_status();
|
|
|
|
glClearColor(0.0, 0.0, 0.0, 0.0);
|
|
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
|
|
|
unbind();
|
|
}
|
|
}
|