SFML/src/SFML/Graphics/RenderTextureImplDefault.cpp at master · anprogrammer/SFML · GitHub

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////////////////////////////////////////////////////////////

// SFML - Simple and Fast Multimedia Library

// 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;

}

////////////////////////////////////////////////////////////

unsigned int RenderTextureImplDefault::getMaximumAntialiasingLevel()

{

// If the system is so old that it doesn't support FBOs, chances are it is

// also using either a software renderer or some CPU emulated support for AA

// In order to not cripple performance in this rare case, we just return 0 here

return 0;

}

////////////////////////////////////////////////////////////

bool RenderTextureImplDefault::create(unsigned int width, unsigned int height, unsigned int, const ContextSettings& settings)

{

// Store the dimensions

m_width = width;

m_height = height;

// Create the in-memory OpenGL context

m_context = new Context(settings, 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

SFML/src/SFML/Graphics/RenderTextureImplDefault.cpp at master · anprogrammer/SFML · GitHub

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