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43 lines
1.4 KiB
43 lines
1.4 KiB
14 years ago
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//
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// fbo.mm
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// J
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//
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// Created by Joshua Moerman on 8/28/11.
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// Copyright 2011 Vadovas. All rights reserved.
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//
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#import "fbo.h"
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#import <QuartzCore/QuartzCore.h>
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namespace J {
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fbo::fbo(EAGLContext* context, CAEAGLLayer* layer) : width(0), height(0), fbo_number(0), renderbuffers(), texture_id(0){
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glGenFramebuffers(1, &fbo_number);
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bind();
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// much like create_attach_renderbuffer(), but it's not created, but given by the context.
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{
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GLuint buffer;
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glGenRenderbuffers(1, &buffer);
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glBindRenderbuffer(GL_RENDERBUFFER, buffer);
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[context renderbufferStorage:GL_RENDERBUFFER fromDrawable:layer];
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glGetRenderbufferParameteriv(GL_RENDERBUFFER, GL_RENDERBUFFER_WIDTH, &width);
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glGetRenderbufferParameteriv(GL_RENDERBUFFER, GL_RENDERBUFFER_HEIGHT, &height);
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glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, buffer);
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renderbuffers[GL_COLOR_ATTACHMENT0] = buffer;
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}
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//this will cause a INVALID_OPERATION in bind().
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//create_attach_renderbuffer(GL_DEPTH_COMPONENT16, GL_DEPTH_ATTACHMENT);
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check_error();
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check_status();
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glClearColor(0.0, 0.0, 0.0, 0.0);
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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unbind();
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}
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}
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