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dolphin/Source/Core/Common/GL/GLInterface/EGL.cpp

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// Copyright 2012 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#include <array>
#include <cstdlib>
#include <sstream>
#include <vector>
#include "Common/GL/GLInterface/EGL.h"
#include "Common/Logging/Log.h"
#ifndef EGL_KHR_create_context
#define EGL_KHR_create_context 1
#define EGL_CONTEXT_MAJOR_VERSION_KHR 0x3098
#define EGL_CONTEXT_MINOR_VERSION_KHR 0x30FB
#define EGL_CONTEXT_FLAGS_KHR 0x30FC
#define EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR 0x30FD
#define EGL_CONTEXT_OPENGL_RESET_NOTIFICATION_STRATEGY_KHR 0x31BD
#define EGL_NO_RESET_NOTIFICATION_KHR 0x31BE
#define EGL_LOSE_CONTEXT_ON_RESET_KHR 0x31BF
#define EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR 0x00000001
#define EGL_CONTEXT_OPENGL_FORWARD_COMPATIBLE_BIT_KHR 0x00000002
#define EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR 0x00000004
#define EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR 0x00000001
#define EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR 0x00000002
#define EGL_OPENGL_ES3_BIT_KHR 0x00000040
#endif /* EGL_KHR_create_context */
// Show the current FPS
void cInterfaceEGL::Swap()
{
if (egl_surf != EGL_NO_SURFACE)
eglSwapBuffers(egl_dpy, egl_surf);
}
void cInterfaceEGL::SwapInterval(int Interval)
{
eglSwapInterval(egl_dpy, Interval);
}
void* cInterfaceEGL::GetFuncAddress(const std::string& name)
{
return (void*)eglGetProcAddress(name.c_str());
}
void cInterfaceEGL::DetectMode()
{
if (s_opengl_mode != GLInterfaceMode::MODE_DETECT)
return;
EGLint num_configs;
bool supportsGL = false, supportsGLES2 = false, supportsGLES3 = false;
std::array<int, 3> renderable_types = {
EGL_OPENGL_BIT, (1 << 6), /* EGL_OPENGL_ES3_BIT_KHR */
EGL_OPENGL_ES2_BIT,
};
for (auto renderable_type : renderable_types)
{
// attributes for a visual in RGBA format with at least
// 8 bits per color
int attribs[] = {EGL_RED_SIZE, 8, EGL_GREEN_SIZE, 8,
EGL_BLUE_SIZE, 8, EGL_RENDERABLE_TYPE, renderable_type,
EGL_NONE};
// Get how many configs there are
if (!eglChooseConfig(egl_dpy, attribs, nullptr, 0, &num_configs))
{
INFO_LOG(VIDEO, "Error: couldn't get an EGL visual config\n");
continue;
}
EGLConfig* config = new EGLConfig[num_configs];
// Get all the configurations
if (!eglChooseConfig(egl_dpy, attribs, config, num_configs, &num_configs))
{
INFO_LOG(VIDEO, "Error: couldn't get an EGL visual config\n");
delete[] config;
continue;
}
for (int i = 0; i < num_configs; ++i)
{
EGLint attribVal;
bool ret;
ret = eglGetConfigAttrib(egl_dpy, config[i], EGL_RENDERABLE_TYPE, &attribVal);
if (ret)
{
if (attribVal & EGL_OPENGL_BIT)
supportsGL = true;
if (attribVal & (1 << 6)) /* EGL_OPENGL_ES3_BIT_KHR */
supportsGLES3 = true;
if (attribVal & EGL_OPENGL_ES2_BIT)
supportsGLES2 = true;
}
}
delete[] config;
}
if (supportsGL)
s_opengl_mode = GLInterfaceMode::MODE_OPENGL;
else if (supportsGLES3)
s_opengl_mode = GLInterfaceMode::MODE_OPENGLES3;
else if (supportsGLES2)
s_opengl_mode = GLInterfaceMode::MODE_OPENGLES2;
if (s_opengl_mode == GLInterfaceMode::MODE_DETECT) // Errored before we found a mode
s_opengl_mode = GLInterfaceMode::MODE_OPENGL; // Fall back to OpenGL
}
// Create rendering window.
// Call browser: Core.cpp:EmuThread() > main.cpp:Video_Initialize()
bool cInterfaceEGL::Create(void* window_handle, bool core)
{
EGLint egl_major, egl_minor;
bool supports_core_profile = false;
egl_dpy = OpenDisplay();
m_host_window = (EGLNativeWindowType)window_handle;
m_has_handle = !!window_handle;
m_core = core;
if (!egl_dpy)
{
INFO_LOG(VIDEO, "Error: eglGetDisplay() failed\n");
return false;
}
if (!eglInitialize(egl_dpy, &egl_major, &egl_minor))
{
INFO_LOG(VIDEO, "Error: eglInitialize() failed\n");
return false;
}
/* Detection code */
EGLint num_configs;
DetectMode();
// attributes for a visual in RGBA format with at least
// 8 bits per color
int attribs[] = {EGL_RENDERABLE_TYPE,
EGL_OPENGL_ES2_BIT,
EGL_RED_SIZE,
8,
EGL_GREEN_SIZE,
8,
EGL_BLUE_SIZE,
8,
EGL_NONE};
std::vector<EGLint> ctx_attribs;
switch (s_opengl_mode)
{
case GLInterfaceMode::MODE_OPENGL:
attribs[1] = EGL_OPENGL_BIT;
ctx_attribs = {EGL_NONE};
break;
case GLInterfaceMode::MODE_OPENGLES2:
attribs[1] = EGL_OPENGL_ES2_BIT;
ctx_attribs = {EGL_CONTEXT_CLIENT_VERSION, 2, EGL_NONE};
break;
case GLInterfaceMode::MODE_OPENGLES3:
attribs[1] = (1 << 6); /* EGL_OPENGL_ES3_BIT_KHR */
ctx_attribs = {EGL_CONTEXT_CLIENT_VERSION, 3, EGL_NONE};
break;
default:
ERROR_LOG(VIDEO, "Unknown opengl mode set\n");
return false;
break;
}
if (!eglChooseConfig(egl_dpy, attribs, &m_config, 1, &num_configs))
{
INFO_LOG(VIDEO, "Error: couldn't get an EGL visual config\n");
return false;
}
if (s_opengl_mode == GLInterfaceMode::MODE_OPENGL)
eglBindAPI(EGL_OPENGL_API);
else
eglBindAPI(EGL_OPENGL_ES_API);
std::string tmp;
std::istringstream buffer(eglQueryString(egl_dpy, EGL_EXTENSIONS));
while (buffer >> tmp)
{
if (tmp == "EGL_KHR_surfaceless_context")
m_supports_surfaceless = true;
else if (tmp == "EGL_KHR_create_context")
supports_core_profile = true;
}
if (supports_core_profile && core && s_opengl_mode == GLInterfaceMode::MODE_OPENGL)
{
std::array<std::pair<int, int>, 7> versions_to_try = {{
{4, 5}, {4, 4}, {4, 3}, {4, 2}, {4, 1}, {4, 0}, {3, 3},
}};
for (const auto& version : versions_to_try)
{
std::vector<EGLint> core_attribs = {EGL_CONTEXT_MAJOR_VERSION_KHR,
version.first,
EGL_CONTEXT_MINOR_VERSION_KHR,
version.second,
EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR,
EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR,
EGL_CONTEXT_FLAGS_KHR,
EGL_CONTEXT_OPENGL_FORWARD_COMPATIBLE_BIT_KHR,
EGL_NONE};
egl_ctx = eglCreateContext(egl_dpy, m_config, EGL_NO_CONTEXT, &core_attribs[0]);
if (egl_ctx)
break;
}
}
if (!egl_ctx)
{
m_core = false;
egl_ctx = eglCreateContext(egl_dpy, m_config, EGL_NO_CONTEXT, &ctx_attribs[0]);
}
if (!egl_ctx)
{
INFO_LOG(VIDEO, "Error: eglCreateContext failed\n");
return false;
}
if (!CreateWindowSurface())
{
ERROR_LOG(VIDEO, "Error: CreateWindowSurface failed 0x%04x\n", eglGetError());
return false;
}
return true;
}
std::unique_ptr<cInterfaceBase> cInterfaceEGL::CreateSharedContext()
{
std::unique_ptr<cInterfaceBase> context = std::make_unique<cInterfaceEGL>();
if (!context->Create(this))
return nullptr;
return context;
}
bool cInterfaceEGL::Create(cInterfaceBase* main_context)
{
cInterfaceEGL* egl_context = static_cast<cInterfaceEGL*>(main_context);
egl_dpy = egl_context->egl_dpy;
m_core = egl_context->m_core;
m_config = egl_context->m_config;
m_supports_surfaceless = egl_context->m_supports_surfaceless;
m_is_shared = true;
m_has_handle = false;
EGLint ctx_attribs[] = {EGL_CONTEXT_CLIENT_VERSION, 2, EGL_NONE};
switch (egl_context->GetMode())
{
case GLInterfaceMode::MODE_OPENGL:
ctx_attribs[0] = EGL_NONE;
break;
case GLInterfaceMode::MODE_OPENGLES2:
ctx_attribs[1] = 2;
break;
case GLInterfaceMode::MODE_OPENGLES3:
ctx_attribs[1] = 3;
break;
default:
INFO_LOG(VIDEO, "Unknown opengl mode set\n");
return false;
break;
}
if (egl_context->GetMode() == GLInterfaceMode::MODE_OPENGL)
eglBindAPI(EGL_OPENGL_API);
else
eglBindAPI(EGL_OPENGL_ES_API);
egl_ctx = eglCreateContext(egl_dpy, m_config, egl_context->egl_ctx, ctx_attribs);
if (!egl_ctx)
{
INFO_LOG(VIDEO, "Error: eglCreateContext failed 0x%04x\n", eglGetError());
return false;
}
if (!CreateWindowSurface())
{
ERROR_LOG(VIDEO, "Error: CreateWindowSurface failed 0x%04x\n", eglGetError());
return false;
}
return true;
}
bool cInterfaceEGL::CreateWindowSurface()
{
if (m_has_handle)
{
EGLNativeWindowType native_window = InitializePlatform(m_host_window, m_config);
egl_surf = eglCreateWindowSurface(egl_dpy, m_config, native_window, nullptr);
if (!egl_surf)
{
INFO_LOG(VIDEO, "Error: eglCreateWindowSurface failed\n");
return false;
}
}
else if (!m_supports_surfaceless)
{
EGLint attrib_list[] = {
EGL_NONE,
};
egl_surf = eglCreatePbufferSurface(egl_dpy, m_config, attrib_list);
if (!egl_surf)
{
INFO_LOG(VIDEO, "Error: eglCreatePbufferSurface failed");
return false;
}
}
else
{
egl_surf = EGL_NO_SURFACE;
}
return true;
}
void cInterfaceEGL::DestroyWindowSurface()
{
if (egl_surf != EGL_NO_SURFACE && !eglDestroySurface(egl_dpy, egl_surf))
NOTICE_LOG(VIDEO, "Could not destroy window surface.");
egl_surf = EGL_NO_SURFACE;
}
bool cInterfaceEGL::MakeCurrent()
{
return eglMakeCurrent(egl_dpy, egl_surf, egl_surf, egl_ctx);
}
void cInterfaceEGL::UpdateHandle(void* window_handle)
{
m_host_window = (EGLNativeWindowType)window_handle;
m_has_handle = !!window_handle;
}
void cInterfaceEGL::UpdateSurface()
{
ClearCurrent();
DestroyWindowSurface();
CreateWindowSurface();
MakeCurrent();
}
bool cInterfaceEGL::ClearCurrent()
{
return eglMakeCurrent(egl_dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
}
// Close backend
void cInterfaceEGL::Shutdown()
{
ShutdownPlatform();
if (egl_ctx)
{
if (!eglMakeCurrent(egl_dpy, egl_surf, egl_surf, egl_ctx))
NOTICE_LOG(VIDEO, "Could not release drawing context.");
eglMakeCurrent(egl_dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
if (!eglDestroyContext(egl_dpy, egl_ctx))
NOTICE_LOG(VIDEO, "Could not destroy drawing context.");
DestroyWindowSurface();
if (!m_is_shared && !eglTerminate(egl_dpy))
NOTICE_LOG(VIDEO, "Could not destroy display connection.");
egl_ctx = nullptr;
}
}
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