mirror of
https://gitlab.com/kicad/code/kicad.git
synced 2025-09-14 10:13:19 +02:00
0c36e16292
Glew has the problem that it has to be selected at build time if GLX or EGL is supported by the library, and this in not encoded in the library name, nor ABI, nor anything. Then it's easy to get into the situation that a binary is built but cannot run because glew supports an API different from the one used by wxWidgets, or the binary fails to link in the end after all objects are compiled. epoxy can support both with the same library avoiding this problem. epoxy is not initialized explicitly, replaced initialization with version check where one was not done already. It seems to be available as vcpkg https://vcpkg.link/ports/libepoxy There are problems related to GL context switching on Windows which does not seem to be used in kicad https://github.com/anholt/libepoxy#known-issues-when-running-on-windows There is also a problem related to multithreaded rendering on Windows https://github.com/anholt/libepoxy/pull/265 It's harder to tell if threading is used for rendering but it does not look like kicad is doing anything complex enough to warrant using multiple rendering threads. Fixes https://gitlab.com/kicad/code/kicad/-/issues/20630 Fixes https://gitlab.com/kicad/code/kicad/-/issues/12543
140 lines
4.5 KiB
C++
140 lines
4.5 KiB
C++
/*
|
|
* This program source code file is part of KiCad, a free EDA CAD application.
|
|
*
|
|
* Copyright (C) 2013-2016 CERN
|
|
* Copyright The KiCad Developers, see AUTHORS.txt for contributors.
|
|
*
|
|
* @author Maciej Suminski <maciej.suminski@cern.ch>
|
|
*
|
|
* 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 2
|
|
* 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, you may find one here:
|
|
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
|
|
* or you may search the http://www.gnu.org website for the version 2 license,
|
|
* or you may write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
|
|
*/
|
|
|
|
/**
|
|
* @file opengl_compositor.h
|
|
* Handle multitarget rendering (ie. to different textures/surfaces) and later compositing
|
|
* into a single image (OpenGL flavor).
|
|
*/
|
|
|
|
#ifndef OPENGL_COMPOSITOR_H_
|
|
#define OPENGL_COMPOSITOR_H_
|
|
|
|
#include <gal/opengl/kiepoxy.h> // Must be included first
|
|
|
|
#include <gal/compositor.h>
|
|
#include <gal/opengl/antialiasing.h>
|
|
#include <gal/gal_display_options.h>
|
|
#include <deque>
|
|
|
|
namespace KIGFX
|
|
{
|
|
|
|
class OPENGL_COMPOSITOR : public COMPOSITOR
|
|
{
|
|
public:
|
|
OPENGL_COMPOSITOR();
|
|
virtual ~OPENGL_COMPOSITOR();
|
|
|
|
/// @copydoc COMPOSITOR::Initialize()
|
|
virtual void Initialize() override;
|
|
|
|
/// @copydoc COMPOSITOR::Resize()
|
|
virtual void Resize( unsigned int aWidth, unsigned int aHeight ) override;
|
|
|
|
/// @copydoc COMPOSITOR::CreateBuffer()
|
|
virtual unsigned int CreateBuffer() override;
|
|
|
|
/// @copydoc COMPOSITOR::SetBuffer()
|
|
virtual void SetBuffer( unsigned int aBufferHandle ) override;
|
|
|
|
/// @copydoc COMPOSITOR::GetBuffer()
|
|
inline virtual unsigned int GetBuffer() const override
|
|
{
|
|
if( m_curFbo == DIRECT_RENDERING )
|
|
return DIRECT_RENDERING;
|
|
|
|
return m_curBuffer + 1;
|
|
}
|
|
|
|
/// @copydoc COMPOSITOR::ClearBuffer()
|
|
virtual void ClearBuffer( const COLOR4D& aColor ) override;
|
|
|
|
/// @copydoc COMPOSITOR::DrawBuffer()
|
|
virtual void DrawBuffer( unsigned int aBufferHandle ) override;
|
|
|
|
/// @copydoc COMPOSITOR::Begin()
|
|
virtual void Begin() override;
|
|
|
|
// @copydoc COMPOSITOR::Present()
|
|
virtual void Present() override;
|
|
|
|
// Constant used by glBindFramebuffer to turn off rendering to framebuffers
|
|
static const unsigned int DIRECT_RENDERING = 0;
|
|
|
|
VECTOR2I GetScreenSize() const;
|
|
GLenum GetBufferTexture( unsigned int aBufferHandle );
|
|
void DrawBuffer( unsigned int aSourceHandle, unsigned int aDestHandle );
|
|
unsigned int CreateBuffer( VECTOR2I aDimensions );
|
|
|
|
void SetAntialiasingMode( OPENGL_ANTIALIASING_MODE aMode ); // clears all buffers
|
|
OPENGL_ANTIALIASING_MODE GetAntialiasingMode() const;
|
|
|
|
int GetAntialiasSupersamplingFactor() const;
|
|
VECTOR2D GetAntialiasRenderingOffset() const;
|
|
|
|
protected:
|
|
/// Binds a specific Framebuffer Object.
|
|
void bindFb( unsigned int aFb );
|
|
|
|
/**
|
|
* Perform freeing of resources.
|
|
*/
|
|
void clean();
|
|
|
|
/// Returns number of used buffers
|
|
inline unsigned int usedBuffers()
|
|
{
|
|
return m_buffers.size();
|
|
}
|
|
|
|
// Buffers are simply textures storing a result of certain target rendering.
|
|
struct OPENGL_BUFFER
|
|
{
|
|
VECTOR2I dimensions;
|
|
GLuint textureTarget; ///< Main texture handle
|
|
GLuint attachmentPoint; ///< Point to which an image from texture is attached
|
|
};
|
|
|
|
bool m_initialized; ///< Initialization status flag
|
|
unsigned int m_curBuffer; ///< Currently used buffer handle
|
|
GLuint m_mainFbo; ///< Main FBO handle (storing all target textures)
|
|
GLuint m_depthBuffer; ///< Depth buffer handle
|
|
typedef std::deque<OPENGL_BUFFER> OPENGL_BUFFERS;
|
|
|
|
/// Stores information about initialized buffers
|
|
OPENGL_BUFFERS m_buffers;
|
|
|
|
/// Store the used FBO name in case there was more than one compositor used
|
|
GLuint m_curFbo;
|
|
|
|
OPENGL_ANTIALIASING_MODE m_currentAntialiasingMode;
|
|
std::unique_ptr<OPENGL_PRESENTOR> m_antialiasing;
|
|
};
|
|
} // namespace KIGFX
|
|
|
|
#endif /* COMPOSITOR_H_ */
|