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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "backends/graphics/opengl/pipelines/pipeline.h"
#include "backends/graphics/opengl/framebuffer.h"
namespace OpenGL {
Pipeline *Pipeline::activePipeline = nullptr;
Pipeline::Pipeline()
: _activeFramebuffer(nullptr) {
}
void Pipeline::activate() {
if (activePipeline == this) {
return;
}
if (activePipeline) {
activePipeline->deactivate();
}
activePipeline = this;
activateInternal();
}
void Pipeline::activateInternal() {
if (_activeFramebuffer) {
_activeFramebuffer->activate(this);
}
}
void Pipeline::deactivate() {
assert(isActive());
deactivateInternal();
activePipeline = nullptr;
}
void Pipeline::deactivateInternal() {
if (_activeFramebuffer) {
_activeFramebuffer->deactivate();
}
}
Framebuffer *Pipeline::setFramebuffer(Framebuffer *framebuffer) {
Framebuffer *oldFramebuffer = _activeFramebuffer;
if (isActive() && oldFramebuffer) {
oldFramebuffer->deactivate();
}
_activeFramebuffer = framebuffer;
if (isActive() && _activeFramebuffer) {
_activeFramebuffer->activate(this);
}
return oldFramebuffer;
}
} // End of namespace OpenGL
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