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////////////////////////////////////////////////////////////
//
// SFML - Simple and Fast Multimedia Library
// Copyright (C) 2007-2016 Laurent Gomila (laurent@sfml-dev.org)
//
// This software is provided 'as-is', without any express or implied warranty.
// In no event will the authors be held liable for any damages arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it freely,
// subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented;
// you must not claim that you wrote the original software.
// If you use this software in a product, an acknowledgment
// in the product documentation would be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such,
// and must not be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source distribution.
//
////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////
// Headers
////////////////////////////////////////////////////////////
#include <SFML/Graphics/RenderTextureImplDefault.hpp>
#include <SFML/Graphics/GLCheck.hpp>
#include <SFML/Graphics/TextureSaver.hpp>
#include <SFML/Window/Context.hpp>
#include <SFML/System/Err.hpp>
namespace sf
{
namespace priv
{
////////////////////////////////////////////////////////////
RenderTextureImplDefault::RenderTextureImplDefault() :
m_context(0),
m_width (0),
m_height (0)
{
}
////////////////////////////////////////////////////////////
RenderTextureImplDefault::~RenderTextureImplDefault()
{
// Destroy the context
delete m_context;
}
////////////////////////////////////////////////////////////
bool RenderTextureImplDefault::create(unsigned int width, unsigned int height, unsigned int, bool depthBuffer)
{
// Store the dimensions
m_width = width;
m_height = height;
// Create the in-memory OpenGL context
m_context = new Context(ContextSettings(depthBuffer ? 32 : 0), width, height);
return true;
}
////////////////////////////////////////////////////////////
bool RenderTextureImplDefault::activate(bool active)
{
return m_context->setActive(active);
}
////////////////////////////////////////////////////////////
void RenderTextureImplDefault::updateTexture(unsigned int textureId)
{
// Make sure that the current texture binding will be preserved
priv::TextureSaver save;
// Copy the rendered pixels to the texture
glCheck(glBindTexture(GL_TEXTURE_2D, textureId));
glCheck(glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, m_width, m_height));
}
} // namespace priv
} // namespace sf
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