itsmattkc
1aa87cbda6
Large-scale code cleanup. Also adds a license to the top of all files that were missing it.
154 lines
3.3 KiB
C++
154 lines
3.3 KiB
C++
/***
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Olive - Non-Linear Video Editor
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Copyright (C) 2019 Olive Team
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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***/
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#include "openglframebuffer.h"
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#include <QDebug>
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#include <QOpenGLExtraFunctions>
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OLIVE_NAMESPACE_ENTER
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OpenGLFramebuffer::OpenGLFramebuffer() :
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context_(nullptr),
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buffer_(0),
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texture_(nullptr)
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{
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}
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OpenGLFramebuffer::~OpenGLFramebuffer()
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{
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Destroy();
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}
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void OpenGLFramebuffer::Create(QOpenGLContext *ctx)
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{
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if (ctx == nullptr) {
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qWarning() << "OpenGLFramebuffer::Create was passed an invalid context";
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return;
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}
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// Free any previous framebuffer
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Destroy();
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context_ = ctx;
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connect(context_, &QOpenGLContext::aboutToBeDestroyed, this, &OpenGLFramebuffer::Destroy);
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// Create framebuffer object
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context_->functions()->glGenFramebuffers(1, &buffer_);
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}
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void OpenGLFramebuffer::Destroy()
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{
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if (context_ != nullptr) {
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disconnect(context_, &QOpenGLContext::aboutToBeDestroyed, this, &OpenGLFramebuffer::Destroy);
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context_->functions()->glDeleteFramebuffers(1, &buffer_);
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buffer_ = 0;
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context_ = nullptr;
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}
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}
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bool OpenGLFramebuffer::IsCreated() const
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{
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return (buffer_ > 0);
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}
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void OpenGLFramebuffer::Bind()
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{
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if (context_ == nullptr) {
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return;
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}
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context_->functions()->glBindFramebuffer(GL_FRAMEBUFFER, buffer_);
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}
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void OpenGLFramebuffer::Release()
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{
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if (context_ == nullptr) {
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return;
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}
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context_->functions()->glBindFramebuffer(GL_FRAMEBUFFER, 0);
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}
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void OpenGLFramebuffer::Attach(OpenGLTexture *texture, bool clear)
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{
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if (context_ == nullptr) {
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return;
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}
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Detach();
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texture_ = texture;
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QOpenGLFunctions* f = context_->functions();
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// bind framebuffer for attaching
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f->glBindFramebuffer(GL_FRAMEBUFFER, buffer_);
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context_->extraFunctions()->glFramebufferTexture2D(
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GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture_->texture(), 0
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);
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if (clear) {
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context_->functions()->glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
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context_->functions()->glClear(GL_COLOR_BUFFER_BIT);
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}
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// release framebuffer
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f->glBindFramebuffer(GL_FRAMEBUFFER, 0);
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}
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void OpenGLFramebuffer::Attach(OpenGLTexturePtr texture, bool clear)
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{
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Attach(texture.get(), clear);
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}
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void OpenGLFramebuffer::Detach()
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{
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if (context_ == nullptr) {
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return;
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}
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if (texture_) {
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QOpenGLFunctions* f = context_->functions();
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// bind framebuffer for attaching
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f->glBindFramebuffer(GL_FRAMEBUFFER, buffer_);
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context_->extraFunctions()->glFramebufferTexture2D(
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GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, 0, 0
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);
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// release framebuffer
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f->glBindFramebuffer(GL_FRAMEBUFFER, 0);
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texture_ = nullptr;
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}
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}
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const GLuint &OpenGLFramebuffer::buffer() const
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{
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return buffer_;
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}
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OLIVE_NAMESPACE_EXIT
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