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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_GL_GL_SURFACE_EGL_H_
#define UI_GL_GL_SURFACE_EGL_H_
#if defined(OS_WIN)
#include <windows.h>
#endif
#include <memory>
#include <string>
#include <vector>
#include "base/command_line.h"
#include "base/compiler_specific.h"
#include "base/macros.h"
#include "base/time/time.h"
#include "build/build_config.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gfx/vsync_provider.h"
#include "ui/gl/gl_bindings.h"
#include "ui/gl/gl_export.h"
#include "ui/gl/gl_surface.h"
#include "ui/gl/gl_surface_overlay.h"
namespace gl {
// If adding a new type, also add it to EGLDisplayType in
// tools/metrics/histograms/histograms.xml. Don't remove or reorder entries.
enum DisplayType {
DEFAULT = 0,
SWIFT_SHADER = 1,
ANGLE_WARP = 2,
ANGLE_D3D9 = 3,
ANGLE_D3D11 = 4,
ANGLE_OPENGL = 5,
ANGLE_OPENGLES = 6,
ANGLE_NULL = 7,
DISPLAY_TYPE_MAX = 8,
};
GL_EXPORT void GetEGLInitDisplays(bool supports_angle_d3d,
bool supports_angle_opengl,
bool supports_angle_null,
const base::CommandLine* command_line,
std::vector<DisplayType>* init_displays);
// Interface for EGL surface.
class GL_EXPORT GLSurfaceEGL : public GLSurface {
public:
GLSurfaceEGL();
// Implement GLSurface.
EGLDisplay GetDisplay() override;
EGLConfig GetConfig() override;
GLSurfaceFormat GetFormat() override;
static bool InitializeOneOff(EGLNativeDisplayType native_display);
static void ShutdownOneOff();
static EGLDisplay GetHardwareDisplay();
static EGLDisplay InitializeDisplay(EGLNativeDisplayType native_display);
static EGLNativeDisplayType GetNativeDisplay();
// These aren't particularly tied to surfaces, but since we already
// have the static InitializeOneOff here, it's easiest to reuse its
// initialization guards.
static const char* GetEGLExtensions();
static bool HasEGLExtension(const char* name);
static bool IsCreateContextRobustnessSupported();
static bool IsCreateContextBindGeneratesResourceSupported();
static bool IsCreateContextWebGLCompatabilitySupported();
static bool IsEGLSurfacelessContextSupported();
static bool IsDirectCompositionSupported();
protected:
~GLSurfaceEGL() override;
EGLConfig config_ = nullptr;
GLSurfaceFormat format_;
private:
DISALLOW_COPY_AND_ASSIGN(GLSurfaceEGL);
static bool initialized_;
};
// Encapsulates an EGL surface bound to a view.
class GL_EXPORT NativeViewGLSurfaceEGL : public GLSurfaceEGL {
public:
explicit NativeViewGLSurfaceEGL(EGLNativeWindowType window);
// Implement GLSurface.
using GLSurfaceEGL::Initialize;
bool Initialize(GLSurfaceFormat format) override;
void Destroy() override;
bool Resize(const gfx::Size& size,
float scale_factor,
bool has_alpha) override;
bool Recreate() override;
bool IsOffscreen() override;
gfx::SwapResult SwapBuffers() override;
gfx::Size GetSize() override;
EGLSurface GetHandle() override;
bool SupportsPostSubBuffer() override;
gfx::SwapResult PostSubBuffer(int x, int y, int width, int height) override;
bool SupportsCommitOverlayPlanes() override;
gfx::SwapResult CommitOverlayPlanes() override;
gfx::VSyncProvider* GetVSyncProvider() override;
bool ScheduleOverlayPlane(int z_order,
gfx::OverlayTransform transform,
GLImage* image,
const gfx::Rect& bounds_rect,
const gfx::RectF& crop_rect) override;
bool FlipsVertically() const override;
bool BuffersFlipped() const override;
// Create a NativeViewGLSurfaceEGL with an externally provided
// gfx::VSyncProvider. Takes ownership of the gfx::VSyncProvider.
virtual bool Initialize(std::unique_ptr<gfx::VSyncProvider> sync_provider);
// Takes care of the platform dependant bits, of any, for creating the window.
virtual bool InitializeNativeWindow();
protected:
~NativeViewGLSurfaceEGL() override;
EGLNativeWindowType window_;
gfx::Size size_;
bool enable_fixed_size_angle_;
void OnSetSwapInterval(int interval) override;
gfx::SwapResult SwapBuffersWithDamage(const std::vector<int>& rects);
private:
// Commit the |pending_overlays_| and clear the vector. Returns false if any
// fail to be committed.
bool CommitAndClearPendingOverlays();
void UpdateSwapInterval();
EGLSurface surface_;
bool supports_post_sub_buffer_;
bool supports_swap_buffer_with_damage_;
bool flips_vertically_;
std::unique_ptr<gfx::VSyncProvider> vsync_provider_;
int swap_interval_;
std::vector<GLSurfaceOverlay> pending_overlays_;
#if defined(OS_WIN)
bool vsync_override_;
unsigned int swap_generation_;
static unsigned int current_swap_generation_;
static unsigned int swaps_this_generation_;
static unsigned int last_multiswap_generation_;
#endif
DISALLOW_COPY_AND_ASSIGN(NativeViewGLSurfaceEGL);
};
// Encapsulates a pbuffer EGL surface.
class GL_EXPORT PbufferGLSurfaceEGL : public GLSurfaceEGL {
public:
explicit PbufferGLSurfaceEGL(const gfx::Size& size);
// Implement GLSurface.
bool Initialize(GLSurfaceFormat format) override;
void Destroy() override;
bool IsOffscreen() override;
gfx::SwapResult SwapBuffers() override;
gfx::Size GetSize() override;
bool Resize(const gfx::Size& size,
float scale_factor,
bool has_alpha) override;
EGLSurface GetHandle() override;
void* GetShareHandle() override;
protected:
~PbufferGLSurfaceEGL() override;
private:
gfx::Size size_;
EGLSurface surface_;
DISALLOW_COPY_AND_ASSIGN(PbufferGLSurfaceEGL);
};
// SurfacelessEGL is used as Offscreen surface when platform supports
// KHR_surfaceless_context and GL_OES_surfaceless_context. This would avoid the
// need to create a dummy EGLsurface in case we render to client API targets.
class GL_EXPORT SurfacelessEGL : public GLSurfaceEGL {
public:
explicit SurfacelessEGL(const gfx::Size& size);
// Implement GLSurface.
bool Initialize(GLSurfaceFormat format) override;
void Destroy() override;
bool IsOffscreen() override;
bool IsSurfaceless() const override;
gfx::SwapResult SwapBuffers() override;
gfx::Size GetSize() override;
bool Resize(const gfx::Size& size,
float scale_factor,
bool has_alpha) override;
EGLSurface GetHandle() override;
void* GetShareHandle() override;
protected:
~SurfacelessEGL() override;
private:
gfx::Size size_;
DISALLOW_COPY_AND_ASSIGN(SurfacelessEGL);
};
} // namespace gl
#endif // UI_GL_GL_SURFACE_EGL_H_
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