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47 lines
1.1 KiB
C++
47 lines
1.1 KiB
C++
//
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// TextureTarget.cpp
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// Clock Signal
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//
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// Created by Thomas Harte on 07/02/2016.
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// Copyright © 2016 Thomas Harte. All rights reserved.
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//
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#include "TextureTarget.hpp"
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using namespace OpenGL;
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TextureTarget::TextureTarget(unsigned int width, unsigned int height)
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{
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glGenFramebuffers(1, &_framebuffer);
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glBindFramebuffer(GL_FRAMEBUFFER, _framebuffer);
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glGenTextures(1, &_texture);
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glBindTexture(GL_TEXTURE_2D, _texture);
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uint8_t *emptySpace = new uint8_t[width*height*4];
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)width, (GLsizei)height, 0, GL_RGBA, GL_UNSIGNED_BYTE, emptySpace);
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delete[] emptySpace;
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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, _texture, 0);
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// TODO: raise an exception if check framebuffer status fails.
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// if(glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
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// return nil;
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}
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TextureTarget::~TextureTarget()
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{
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glDeleteFramebuffers(1, &_framebuffer);
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glDeleteTextures(1, &_texture);
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}
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void TextureTarget::bind_framebuffer()
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{
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glBindFramebuffer(GL_FRAMEBUFFER, _framebuffer);
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}
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void TextureTarget::bind_texture()
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{
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glBindTexture(GL_TEXTURE_2D, _texture);
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}
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