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/*
* Copyright (C) 2012,2023 Igalia S.L.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
#pragma once
#include "GLContextWrapper.h"
#include "IntSize.h"
#include <wtf/Noncopyable.h>
#include <wtf/TZoneMalloc.h>
#include <wtf/ThreadSafeWeakPtr.h>
#if !PLATFORM(GTK) && !PLATFORM(WPE)
#include <EGL/eglplatform.h>
typedef EGLNativeWindowType GLNativeWindowType;
#else
typedef uint64_t GLNativeWindowType;
#endif
#if ENABLE(MEDIA_TELEMETRY)
#include "MediaTelemetry.h"
#endif
#if USE(WPE_RENDERER)
struct wpe_renderer_backend_egl_offscreen_target;
#endif
typedef void* GCGLContext;
typedef void* EGLConfig;
typedef void* EGLContext;
typedef void* EGLDisplay;
typedef void* EGLSurface;
namespace WebCore {
class GLDisplay;
class PlatformDisplay;
class GLContext final : public GLContextWrapper
#if ENABLE(MEDIA_TELEMETRY)
, public MediaTelemetryWaylandInfoGetter
#endif
{
WTF_MAKE_TZONE_ALLOCATED(GLContext);
WTF_MAKE_NONCOPYABLE(GLContext);
public:
enum class Target : uint8_t {
Default,
Surfaceless,
#if USE(GBM)
GBM,
#endif
#if USE(WPE_RENDERER)
WPE,
#endif
};
WEBCORE_EXPORT static std::unique_ptr<GLContext> create(GLDisplay&, Target, GLContext* = nullptr, GLNativeWindowType = 0);
WEBCORE_EXPORT static std::unique_ptr<GLContext> create(PlatformDisplay&, GLNativeWindowType);
static std::unique_ptr<GLContext> createOffscreen(PlatformDisplay&);
static std::unique_ptr<GLContext> createSharing(PlatformDisplay&);
static GLContext* current();
static bool isExtensionSupported(const char* extensionList, const char* extension);
static unsigned versionFromString(const char* versionString);
static const char* errorString(int statusCode);
static const char* lastErrorString();
GLContext(GLDisplay&, EGLContext, EGLSurface, EGLConfig);
#if USE(WPE_RENDERER)
GLContext(GLDisplay&, EGLContext, EGLSurface, EGLConfig, struct wpe_renderer_backend_egl_offscreen_target*);
#endif
WEBCORE_EXPORT ~GLContext();
RefPtr<GLDisplay> display() const;
unsigned version() const;
EGLConfig config() const { return m_config; }
WEBCORE_EXPORT bool makeContextCurrent();
bool unmakeContextCurrent();
WEBCORE_EXPORT void swapBuffers();
GCGLContext platformContext() const;
struct GLExtensions {
bool OES_texture_npot { false };
bool EXT_unpack_subimage { false };
bool APPLE_sync { false };
bool OES_packed_depth_stencil { false };
};
const GLExtensions& glExtensions() const;
class ScopedGLContext {
WTF_MAKE_NONCOPYABLE(ScopedGLContext);
public:
explicit ScopedGLContext(std::unique_ptr<GLContext>&&);
~ScopedGLContext();
private:
struct {
GLContext* glContext { nullptr };
EGLDisplay display { nullptr };
EGLContext context { nullptr };
EGLSurface readSurface { nullptr };
EGLSurface drawSurface { nullptr };
} m_previous;
std::unique_ptr<GLContext> m_context;
};
class ScopedGLContextCurrent {
WTF_MAKE_NONCOPYABLE(ScopedGLContextCurrent);
public:
explicit ScopedGLContextCurrent(GLContext&);
~ScopedGLContextCurrent();
private:
struct {
GLContext* glContext { nullptr };
EGLDisplay display { nullptr };
EGLContext context { nullptr };
EGLSurface readSurface { nullptr };
EGLSurface drawSurface { nullptr };
} m_previous;
GLContext& m_context;
};
private:
static EGLContext createContextForEGLVersion(EGLDisplay, EGLConfig, EGLContext);
static std::unique_ptr<GLContext> createWindowContext(GLDisplay&, Target, GLNativeWindowType, EGLContext sharingContext);
static std::unique_ptr<GLContext> createSurfacelessContext(GLDisplay&, Target, EGLContext sharingContext);
static std::unique_ptr<GLContext> createPbufferContext(GLDisplay&, EGLContext sharingContext);
static std::unique_ptr<GLContext> createOffscreenContext(GLDisplay&, Target, EGLContext sharingContext);
#if USE(WPE_RENDERER)
static std::unique_ptr<GLContext> createWPEContext(GLDisplay&, EGLContext sharingContext = nullptr);
static EGLSurface createWindowSurfaceWPE(EGLDisplay, EGLConfig, GLNativeWindowType);
void destroyWPETarget();
#endif
static bool getEGLConfig(EGLDisplay, EGLConfig*, int);
// GLContextWrapper
GLContextWrapper::Type type() const override { return GLContextWrapper::Type::Native; }
bool makeCurrentImpl() override;
bool unmakeCurrentImpl() override;
unsigned glVersion() const override;
#if ENABLE(MEDIA_TELEMETRY)
EGLDisplay eglDisplay() const final;
EGLConfig eglConfig() const final;
EGLSurface eglSurface() const final;
EGLContext eglContext() const final;
unsigned windowWidth() const final;
unsigned windowHeight() const final;
#endif
ThreadSafeWeakPtr<GLDisplay> m_display;
mutable unsigned m_version { 0 };
EGLContext m_context { nullptr };
EGLSurface m_surface { nullptr };
EGLConfig m_config { nullptr };
#if USE(WPE_RENDERER)
struct wpe_renderer_backend_egl_offscreen_target* m_wpeTarget { nullptr };
#endif
mutable GLExtensions m_glExtensions;
};
} // namespace WebCore
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