76 lines
2.3 KiB
C++
76 lines
2.3 KiB
C++
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#include "FrameBuffer.h"
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FrameBuffer::FrameBuffer() = default;
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FrameBuffer::FrameBuffer(int width, int height)
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{
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glGenFramebuffers(1, &m_FBO);
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glBindFramebuffer(GL_FRAMEBUFFER, m_FBO);
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glGenTextures(1, &m_Texture);
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glBindTexture(GL_TEXTURE_2D, m_Texture);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, nullptr);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, m_Texture, 0);
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glGenRenderbuffers(1, &m_RBO);
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glBindRenderbuffer(GL_RENDERBUFFER, m_RBO);
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glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, width, height);
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glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER, m_RBO);
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if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
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std::cout << "ERROR::FRAMEBUFFER:: Framebuffer is not complete!" << std::endl;
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glBindFramebuffer(GL_FRAMEBUFFER, 0);
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glBindTexture(GL_TEXTURE_2D, 0);
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glBindRenderbuffer(GL_RENDERBUFFER, 0);
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}
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FrameBuffer::~FrameBuffer()
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{
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glDeleteFramebuffers(1, &m_FBO);
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glDeleteTextures(1, &m_Texture);
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glDeleteRenderbuffers(1, &m_RBO);
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}
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unsigned int FrameBuffer::GetFrameTexture() const
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{
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return m_Texture;
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}
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FrameBuffer FrameBuffer::Create(int width, int height)
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{
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return FrameBuffer{width, height};
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}
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void FrameBuffer::Shutdown() const
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{
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glDeleteBuffers(1, &m_FBO);
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glDeleteBuffers(1, &m_RBO);
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glDeleteTextures(1, &m_Texture);
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}
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void FrameBuffer::RescaleFrameBuffer(int width, int height) const
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{
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glBindTexture(GL_TEXTURE_2D, m_Texture);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, nullptr);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, m_Texture, 0);
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glBindRenderbuffer(GL_RENDERBUFFER, m_RBO);
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glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, width, height);
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glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER, m_RBO);
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}
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void FrameBuffer::Bind() const
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{
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glBindFramebuffer(GL_FRAMEBUFFER, m_FBO);
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}
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void FrameBuffer::Unbind()
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{
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glBindFramebuffer(GL_FRAMEBUFFER, 0);
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}
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