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// Copyright 2012 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#include "VideoBackends/OGL/GLInterfaceBase.h"
#include "VideoBackends/OGL/GLInterface/EGL.h"
#include "VideoCommon/RenderBase.h"
// Show the current FPS
void cInterfaceEGL::Swap()
{
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 != MODE_DETECT)
return;
EGLint num_configs;
EGLConfig *config = nullptr;
bool supportsGL = false, supportsGLES2 = false, supportsGLES3 = false;
// 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_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");
goto err_exit;
}
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");
goto err_exit;
}
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;
}
}
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;
err_exit:
if (s_opengl_mode == GLInterfaceMode::MODE_DETECT) // Errored before we found a mode
s_opengl_mode = GLInterfaceMode::MODE_OPENGL; // Fall back to OpenGL
if (config)
delete[] config;
}
// Create rendering window.
// Call browser: Core.cpp:EmuThread() > main.cpp:Video_Initialize()
bool cInterfaceEGL::Create(void *window_handle, bool core)
{
const char *s;
EGLint egl_major, egl_minor;
egl_dpy = OpenDisplay();
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 */
EGLConfig config;
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 };
EGLint ctx_attribs[] = {
EGL_CONTEXT_CLIENT_VERSION, 2,
EGL_NONE
};
switch (s_opengl_mode)
{
case MODE_OPENGL:
attribs[1] = EGL_OPENGL_BIT;
ctx_attribs[0] = EGL_NONE;
break;
case MODE_OPENGLES2:
attribs[1] = EGL_OPENGL_ES2_BIT;
ctx_attribs[1] = 2;
break;
case MODE_OPENGLES3:
attribs[1] = (1 << 6); /* EGL_OPENGL_ES3_BIT_KHR */
ctx_attribs[1] = 3;
break;
default:
ERROR_LOG(VIDEO, "Unknown opengl mode set\n");
return false;
break;
}
if (!eglChooseConfig( egl_dpy, attribs, &config, 1, &num_configs))
{
INFO_LOG(VIDEO, "Error: couldn't get an EGL visual config\n");
exit(1);
}
if (s_opengl_mode == MODE_OPENGL)
eglBindAPI(EGL_OPENGL_API);
else
eglBindAPI(EGL_OPENGL_ES_API);
EGLNativeWindowType host_window = (EGLNativeWindowType) window_handle;
EGLNativeWindowType native_window = InitializePlatform(host_window, config);
s = eglQueryString(egl_dpy, EGL_VERSION);
INFO_LOG(VIDEO, "EGL_VERSION = %s\n", s);
s = eglQueryString(egl_dpy, EGL_VENDOR);
INFO_LOG(VIDEO, "EGL_VENDOR = %s\n", s);
s = eglQueryString(egl_dpy, EGL_EXTENSIONS);
INFO_LOG(VIDEO, "EGL_EXTENSIONS = %s\n", s);
s = eglQueryString(egl_dpy, EGL_CLIENT_APIS);
INFO_LOG(VIDEO, "EGL_CLIENT_APIS = %s\n", s);
egl_ctx = eglCreateContext(egl_dpy, config, EGL_NO_CONTEXT, ctx_attribs );
if (!egl_ctx)
{
INFO_LOG(VIDEO, "Error: eglCreateContext failed\n");
exit(1);
}
egl_surf = eglCreateWindowSurface(egl_dpy, config, native_window, nullptr);
if (!egl_surf)
{
INFO_LOG(VIDEO, "Error: eglCreateWindowSurface failed\n");
exit(1);
}
return true;
}
bool cInterfaceEGL::MakeCurrent()
{
return eglMakeCurrent(egl_dpy, egl_surf, egl_surf, egl_ctx);
}
// Close backend
void cInterfaceEGL::Shutdown()
{
ShutdownPlatform();
if (egl_ctx && !eglMakeCurrent(egl_dpy, egl_surf, egl_surf, egl_ctx))
NOTICE_LOG(VIDEO, "Could not release drawing context.");
if (egl_ctx)
{
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.");
if (!eglDestroySurface(egl_dpy, egl_surf))
NOTICE_LOG(VIDEO, "Could not destroy window surface.");
if (!eglTerminate(egl_dpy))
NOTICE_LOG(VIDEO, "Could not destroy display connection.");
egl_ctx = nullptr;
}
}
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