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611
irr/src/CEGLManager.cpp
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611
irr/src/CEGLManager.cpp
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// Copyright (C) 2013 Patryk Nadrowski
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// This file is part of the "Irrlicht Engine".
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// For conditions of distribution and use, see copyright notice in Irrlicht.h
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#include "CEGLManager.h"
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#ifdef _IRR_COMPILE_WITH_EGL_MANAGER_
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#include "irrString.h"
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#include "irrArray.h"
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#include "os.h"
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#if defined(_IRR_COMPILE_WITH_ANDROID_DEVICE_)
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#include <android/native_activity.h>
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#endif
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namespace irr
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{
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namespace video
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{
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CEGLManager::CEGLManager() :
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IContextManager(), EglWindow(0), EglDisplay(EGL_NO_DISPLAY),
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EglSurface(EGL_NO_SURFACE), EglContext(EGL_NO_CONTEXT), EglConfig(0), MajorVersion(0), MinorVersion(0)
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{
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#ifdef _DEBUG
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setDebugName("CEGLManager");
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#endif
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}
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CEGLManager::~CEGLManager()
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{
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destroyContext();
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destroySurface();
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terminate();
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}
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bool CEGLManager::initialize(const SIrrlichtCreationParameters ¶ms, const SExposedVideoData &data)
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{
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// store new data
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Params = params;
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Data = data;
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if (EglWindow != 0 && EglDisplay != EGL_NO_DISPLAY)
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return true;
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// Window is depend on platform.
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#if defined(_IRR_COMPILE_WITH_WINDOWS_DEVICE_)
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EglWindow = (NativeWindowType)Data.OpenGLWin32.HWnd;
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Data.OpenGLWin32.HDc = GetDC((HWND)EglWindow);
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EglDisplay = eglGetDisplay((NativeDisplayType)Data.OpenGLWin32.HDc);
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#elif defined(_IRR_EMSCRIPTEN_PLATFORM_)
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EglWindow = 0;
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EglDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
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#elif defined(_IRR_COMPILE_WITH_X11_DEVICE_)
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EglWindow = (NativeWindowType)Data.OpenGLLinux.X11Window;
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EglDisplay = eglGetDisplay((NativeDisplayType)Data.OpenGLLinux.X11Display);
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#elif defined(_IRR_COMPILE_WITH_ANDROID_DEVICE_)
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EglWindow = (ANativeWindow *)Data.OGLESAndroid.Window;
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EglDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
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#elif defined(_IRR_COMPILE_WITH_FB_DEVICE_)
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EglWindow = (NativeWindowType)Data.OpenGLFB.Window;
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EglDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
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#endif
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// We must check if EGL display is valid.
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if (EglDisplay == EGL_NO_DISPLAY) {
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os::Printer::log("Could not get EGL display.");
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terminate();
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return false;
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}
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// Initialize EGL here.
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if (!eglInitialize(EglDisplay, &MajorVersion, &MinorVersion)) {
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os::Printer::log("Could not initialize EGL display.");
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EglDisplay = EGL_NO_DISPLAY;
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terminate();
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return false;
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} else
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os::Printer::log("EGL version", core::stringc(MajorVersion + (MinorVersion * 0.1f)).c_str());
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return true;
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}
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void CEGLManager::terminate()
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{
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if (EglWindow == 0 && EglDisplay == EGL_NO_DISPLAY)
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return;
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if (EglDisplay != EGL_NO_DISPLAY) {
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// We should unbind current EGL context before terminate EGL.
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eglMakeCurrent(EglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
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eglTerminate(EglDisplay);
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EglDisplay = EGL_NO_DISPLAY;
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}
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#if defined(_IRR_COMPILE_WITH_WINDOWS_DEVICE_)
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if (Data.OpenGLWin32.HDc) {
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ReleaseDC((HWND)EglWindow, (HDC)Data.OpenGLWin32.HDc);
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Data.OpenGLWin32.HDc = 0;
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}
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#endif
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MajorVersion = 0;
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MinorVersion = 0;
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}
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bool CEGLManager::generateSurface()
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{
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if (EglDisplay == EGL_NO_DISPLAY)
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return false;
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if (EglSurface != EGL_NO_SURFACE)
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return true;
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// We should assign new WindowID on platforms, where WindowID may change at runtime,
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// at this time only Android support this feature.
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// this needs an update method instead!
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#if defined(_IRR_COMPILE_WITH_ANDROID_DEVICE_)
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EglWindow = (ANativeWindow *)Data.OGLESAndroid.Window;
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#endif
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#if defined(_IRR_EMSCRIPTEN_PLATFORM_)
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// eglChooseConfig is currently only implemented as stub in emscripten (version 1.37.22 at point of writing)
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// But the other solution would also be fine as it also only generates a single context so there is not much to choose from.
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EglConfig = chooseConfig(ECS_IRR_CHOOSE);
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#else
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EglConfig = chooseConfig(ECS_EGL_CHOOSE_FIRST_LOWER_EXPECTATIONS);
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#endif
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if (EglConfig == 0) {
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os::Printer::log("Could not get config for EGL display.");
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return false;
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}
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#if defined(_IRR_COMPILE_WITH_ANDROID_DEVICE_)
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EGLint Format = 0;
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eglGetConfigAttrib(EglDisplay, EglConfig, EGL_NATIVE_VISUAL_ID, &Format);
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ANativeWindow_setBuffersGeometry(EglWindow, 0, 0, Format);
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#endif
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// Now we are able to create EGL surface.
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EglSurface = eglCreateWindowSurface(EglDisplay, EglConfig, EglWindow, 0);
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if (EGL_NO_SURFACE == EglSurface)
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EglSurface = eglCreateWindowSurface(EglDisplay, EglConfig, 0, 0);
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if (EGL_NO_SURFACE == EglSurface)
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os::Printer::log("Could not create EGL surface.");
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#ifdef EGL_VERSION_1_2
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if (MinorVersion > 1)
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eglBindAPI(EGL_OPENGL_ES_API);
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#endif
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if (Params.Vsync)
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eglSwapInterval(EglDisplay, 1);
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return true;
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}
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EGLConfig CEGLManager::chooseConfig(EConfigStyle confStyle)
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{
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EGLConfig configResult = 0;
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// Find proper OpenGL BIT.
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EGLint eglOpenGLBIT = 0;
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switch (Params.DriverType) {
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case EDT_OGLES1:
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eglOpenGLBIT = EGL_OPENGL_ES_BIT;
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break;
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case EDT_OGLES2:
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case EDT_WEBGL1:
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eglOpenGLBIT = EGL_OPENGL_ES2_BIT;
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break;
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default:
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break;
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}
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if (confStyle == ECS_EGL_CHOOSE_FIRST_LOWER_EXPECTATIONS) {
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EGLint Attribs[] = {
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EGL_RED_SIZE, 8,
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EGL_GREEN_SIZE, 8,
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EGL_BLUE_SIZE, 8,
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EGL_ALPHA_SIZE, Params.WithAlphaChannel ? 1 : 0,
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EGL_BUFFER_SIZE, Params.Bits,
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EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
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EGL_DEPTH_SIZE, Params.ZBufferBits,
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EGL_STENCIL_SIZE, Params.Stencilbuffer,
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EGL_SAMPLE_BUFFERS, Params.AntiAlias ? 1 : 0,
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EGL_SAMPLES, Params.AntiAlias,
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#ifdef EGL_VERSION_1_3
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EGL_RENDERABLE_TYPE, eglOpenGLBIT,
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#endif
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EGL_NONE, 0,
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};
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EGLint numConfigs = 0;
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u32 steps = 5;
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// Choose the best EGL config.
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// TODO: We should also have a confStyle ECS_EGL_CHOOSE_CLOSEST
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// which doesn't take first result of eglChooseConfigs,
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// but the closest to requested parameters. eglChooseConfigs
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// can return more than 1 result and first one might have
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// "better" values than requested (more bits per pixel etc).
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// So this returns the config which can do most, not the
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// config which is closest to the requested parameters.
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//
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while (!eglChooseConfig(EglDisplay, Attribs, &configResult, 1, &numConfigs) || !numConfigs) {
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switch (steps) {
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case 5: // samples
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if (Attribs[19] > 2) // Params.AntiAlias
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--Attribs[19];
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else {
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Attribs[17] = 0; // Params.Stencilbuffer
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Attribs[19] = 0; // Params.AntiAlias
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--steps;
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}
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break;
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case 4: // alpha
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if (Attribs[7]) { // Params.WithAlphaChannel
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Attribs[7] = 0;
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if (Params.AntiAlias) {
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Attribs[17] = 1;
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Attribs[19] = Params.AntiAlias;
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steps = 5;
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}
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} else
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--steps;
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break;
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case 3: // stencil
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if (Attribs[15]) { // Params.Stencilbuffer
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Attribs[15] = 0;
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if (Params.AntiAlias) {
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Attribs[17] = 1;
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Attribs[19] = Params.AntiAlias;
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steps = 5;
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}
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} else
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--steps;
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break;
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case 2: // depth size
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if (Attribs[13] > 16) { // Params.ZBufferBits
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Attribs[13] -= 8;
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} else
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--steps;
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break;
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case 1: // buffer size
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if (Attribs[9] > 16) { // Params.Bits
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Attribs[9] -= 8;
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} else
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--steps;
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break;
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default:
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return 0;
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}
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}
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if (Params.AntiAlias && !Attribs[17])
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os::Printer::log("No multisampling.");
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if (Params.WithAlphaChannel && !Attribs[7])
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os::Printer::log("No alpha.");
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if (Params.Stencilbuffer && !Attribs[15])
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os::Printer::log("No stencil buffer.");
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if (Params.ZBufferBits > Attribs[13])
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os::Printer::log("No full depth buffer.");
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if (Params.Bits > Attribs[9])
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os::Printer::log("No full color buffer.");
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} else if (confStyle == ECS_IRR_CHOOSE) {
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// find number of available configs
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EGLint numConfigs;
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if (eglGetConfigs(EglDisplay, NULL, 0, &numConfigs) == EGL_FALSE) {
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testEGLError();
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return 0;
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}
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if (numConfigs <= 0)
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return 0;
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// Get all available configs.
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EGLConfig *configs = new EGLConfig[numConfigs];
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if (eglGetConfigs(EglDisplay, configs, numConfigs, &numConfigs) == EGL_FALSE) {
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testEGLError();
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return 0;
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}
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// Find the best one.
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core::array<SConfigRating> ratings((u32)numConfigs);
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for (u32 i = 0; i < (u32)numConfigs; ++i) {
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SConfigRating r;
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r.config = configs[i];
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r.rating = rateConfig(r.config, eglOpenGLBIT);
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if (r.rating >= 0)
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ratings.push_back(r);
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}
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if (ratings.size() > 0) {
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ratings.sort();
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configResult = ratings[0].config;
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if (ratings[0].rating != 0) {
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// This is just to print some log info (it also rates again while doing that, but rating is cheap enough, so that doesn't matter here).
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rateConfig(ratings[0].config, eglOpenGLBIT, true);
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}
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}
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delete[] configs;
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}
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return configResult;
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}
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irr::s32 CEGLManager::rateConfig(EGLConfig config, EGLint eglOpenGLBIT, bool log)
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{
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// some values must be there or we ignore the config
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#ifdef EGL_VERSION_1_3
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EGLint attribRenderableType = 0;
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eglGetConfigAttrib(EglDisplay, config, EGL_RENDERABLE_TYPE, &attribRenderableType);
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if (attribRenderableType != eglOpenGLBIT) {
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if (log)
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os::Printer::log("EGL_RENDERABLE_TYPE != eglOpenGLBIT");
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return -1;
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}
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#endif
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EGLint attribSurfaceType = 0;
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eglGetConfigAttrib(EglDisplay, config, EGL_SURFACE_TYPE, &attribSurfaceType);
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if (attribSurfaceType != EGL_WINDOW_BIT) {
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if (log)
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os::Printer::log("EGL_SURFACE_TYPE!= EGL_WINDOW_BIT");
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return -1;
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}
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// Generally we give a really bad rating if attributes are worse than requested
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// We give a slight worse rating if attributes are not exact as requested
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// And we use some priorities which might make sense (but not really fine-tuned,
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// so if you think other priorities would be better don't worry about changing the values.
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int rating = 0;
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EGLint attribBufferSize = 0;
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eglGetConfigAttrib(EglDisplay, config, EGL_BUFFER_SIZE, &attribBufferSize);
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if (attribBufferSize < Params.Bits) {
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if (log)
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os::Printer::log("No full color buffer.");
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rating += 100;
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}
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if (attribBufferSize > Params.Bits) {
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if (log)
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os::Printer::log("Larger color buffer.", ELL_DEBUG);
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++rating;
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}
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EGLint attribRedSize = 0;
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eglGetConfigAttrib(EglDisplay, config, EGL_RED_SIZE, &attribRedSize);
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if (attribRedSize < 5 && Params.Bits >= 4)
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rating += 100;
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else if (attribRedSize < 8 && Params.Bits >= 24)
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rating += 10;
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else if (attribRedSize >= 8 && Params.Bits < 24)
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rating++;
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EGLint attribGreenSize = 0;
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eglGetConfigAttrib(EglDisplay, config, EGL_GREEN_SIZE, &attribGreenSize);
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if (attribGreenSize < 5 && Params.Bits >= 4)
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rating += 100;
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else if (attribGreenSize < 8 && Params.Bits >= 24)
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rating += 10;
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else if (attribGreenSize >= 8 && Params.Bits < 24)
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rating++;
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EGLint attribBlueSize = 0;
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eglGetConfigAttrib(EglDisplay, config, EGL_BLUE_SIZE, &attribBlueSize);
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if (attribBlueSize < 5 && Params.Bits >= 4)
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rating += 100;
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else if (attribBlueSize < 8 && Params.Bits >= 24)
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rating += 10;
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else if (attribBlueSize >= 8 && Params.Bits < 24)
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rating++;
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EGLint attribAlphaSize = 0;
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eglGetConfigAttrib(EglDisplay, config, EGL_ALPHA_SIZE, &attribAlphaSize);
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if (Params.WithAlphaChannel && attribAlphaSize == 0) {
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if (log)
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os::Printer::log("No alpha.");
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rating += 10;
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} else if (!Params.WithAlphaChannel && attribAlphaSize > 0) {
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if (log)
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os::Printer::log("Got alpha (unrequested).", ELL_DEBUG);
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rating++;
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}
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EGLint attribStencilSize = 0;
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eglGetConfigAttrib(EglDisplay, config, EGL_STENCIL_SIZE, &attribStencilSize);
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if (Params.Stencilbuffer && attribStencilSize == 0) {
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if (log)
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os::Printer::log("No stencil buffer.");
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rating += 10;
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} else if (!Params.Stencilbuffer && attribStencilSize > 0) {
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if (log)
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os::Printer::log("Got a stencil buffer (unrequested).", ELL_DEBUG);
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rating++;
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}
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EGLint attribDepthSize = 0;
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eglGetConfigAttrib(EglDisplay, config, EGL_DEPTH_SIZE, &attribDepthSize);
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if (attribDepthSize < Params.ZBufferBits) {
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if (log) {
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if (attribDepthSize > 0)
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os::Printer::log("No full depth buffer.");
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else
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os::Printer::log("No depth buffer.");
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}
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rating += 50;
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} else if (attribDepthSize != Params.ZBufferBits) {
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if (log) {
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if (Params.ZBufferBits == 0)
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os::Printer::log("Got a depth buffer (unrequested).", ELL_DEBUG);
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else
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os::Printer::log("Got a larger depth buffer.", ELL_DEBUG);
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||||
}
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||||
rating++;
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||||
}
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||||
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||||
EGLint attribSampleBuffers = 0, attribSamples = 0;
|
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eglGetConfigAttrib(EglDisplay, config, EGL_SAMPLE_BUFFERS, &attribSampleBuffers);
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eglGetConfigAttrib(EglDisplay, config, EGL_SAMPLES, &attribSamples);
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if (Params.AntiAlias && attribSampleBuffers == 0) {
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||||
if (log)
|
||||
os::Printer::log("No multisampling.");
|
||||
rating += 20;
|
||||
} else if (Params.AntiAlias && attribSampleBuffers && attribSamples < Params.AntiAlias) {
|
||||
if (log)
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||||
os::Printer::log("Multisampling with less samples than requested.", ELL_DEBUG);
|
||||
rating += 10;
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||||
} else if (Params.AntiAlias && attribSampleBuffers && attribSamples > Params.AntiAlias) {
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||||
if (log)
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||||
os::Printer::log("Multisampling with more samples than requested.", ELL_DEBUG);
|
||||
rating += 5;
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||||
} else if (!Params.AntiAlias && attribSampleBuffers > 0) {
|
||||
if (log)
|
||||
os::Printer::log("Got multisampling (unrequested).", ELL_DEBUG);
|
||||
rating += 3;
|
||||
}
|
||||
|
||||
return rating;
|
||||
}
|
||||
|
||||
void CEGLManager::destroySurface()
|
||||
{
|
||||
if (EglSurface == EGL_NO_SURFACE)
|
||||
return;
|
||||
|
||||
// We should unbind current EGL context before destroy EGL surface.
|
||||
eglMakeCurrent(EglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
|
||||
|
||||
eglDestroySurface(EglDisplay, EglSurface);
|
||||
EglSurface = EGL_NO_SURFACE;
|
||||
}
|
||||
|
||||
bool CEGLManager::generateContext()
|
||||
{
|
||||
if (EglDisplay == EGL_NO_DISPLAY || EglSurface == EGL_NO_SURFACE)
|
||||
return false;
|
||||
|
||||
if (EglContext != EGL_NO_CONTEXT)
|
||||
return true;
|
||||
|
||||
EGLint OpenGLESVersion = 0;
|
||||
|
||||
switch (Params.DriverType) {
|
||||
case EDT_OGLES1:
|
||||
OpenGLESVersion = 1;
|
||||
break;
|
||||
case EDT_OGLES2:
|
||||
case EDT_WEBGL1:
|
||||
OpenGLESVersion = 2;
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
EGLint ContextAttrib[] = {
|
||||
#ifdef EGL_VERSION_1_3
|
||||
EGL_CONTEXT_CLIENT_VERSION, OpenGLESVersion,
|
||||
#endif
|
||||
EGL_NONE, 0,
|
||||
};
|
||||
|
||||
EglContext = eglCreateContext(EglDisplay, EglConfig, EGL_NO_CONTEXT, ContextAttrib);
|
||||
|
||||
if (testEGLError()) {
|
||||
os::Printer::log("Could not create EGL context.", ELL_ERROR);
|
||||
return false;
|
||||
}
|
||||
|
||||
os::Printer::log("EGL context created with OpenGLESVersion: ", core::stringc((int)OpenGLESVersion), ELL_DEBUG);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
void CEGLManager::destroyContext()
|
||||
{
|
||||
if (EglContext == EGL_NO_CONTEXT)
|
||||
return;
|
||||
|
||||
// We must unbind current EGL context before destroy it.
|
||||
eglMakeCurrent(EglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
|
||||
eglDestroyContext(EglDisplay, EglContext);
|
||||
|
||||
EglContext = EGL_NO_CONTEXT;
|
||||
}
|
||||
|
||||
bool CEGLManager::activateContext(const SExposedVideoData &videoData, bool restorePrimaryOnZero)
|
||||
{
|
||||
eglMakeCurrent(EglDisplay, EglSurface, EglSurface, EglContext);
|
||||
|
||||
if (testEGLError()) {
|
||||
os::Printer::log("Could not make EGL context current.");
|
||||
return false;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
const SExposedVideoData &CEGLManager::getContext() const
|
||||
{
|
||||
return Data;
|
||||
}
|
||||
|
||||
void *CEGLManager::getProcAddress(const std::string &procName)
|
||||
{
|
||||
return (void *)eglGetProcAddress(procName.c_str());
|
||||
}
|
||||
|
||||
bool CEGLManager::swapBuffers()
|
||||
{
|
||||
return (eglSwapBuffers(EglDisplay, EglSurface) == EGL_TRUE);
|
||||
}
|
||||
|
||||
bool CEGLManager::testEGLError()
|
||||
{
|
||||
#if defined(EGL_VERSION_1_0) && defined(_DEBUG)
|
||||
EGLint status = eglGetError();
|
||||
|
||||
switch (status) {
|
||||
case EGL_SUCCESS:
|
||||
return false;
|
||||
case EGL_NOT_INITIALIZED:
|
||||
os::Printer::log("Not Initialized", ELL_ERROR);
|
||||
break;
|
||||
case EGL_BAD_ACCESS:
|
||||
os::Printer::log("Bad Access", ELL_ERROR);
|
||||
break;
|
||||
case EGL_BAD_ALLOC:
|
||||
os::Printer::log("Bad Alloc", ELL_ERROR);
|
||||
break;
|
||||
case EGL_BAD_ATTRIBUTE:
|
||||
os::Printer::log("Bad Attribute", ELL_ERROR);
|
||||
break;
|
||||
case EGL_BAD_CONTEXT:
|
||||
os::Printer::log("Bad Context", ELL_ERROR);
|
||||
break;
|
||||
case EGL_BAD_CONFIG:
|
||||
os::Printer::log("Bad Config", ELL_ERROR);
|
||||
break;
|
||||
case EGL_BAD_CURRENT_SURFACE:
|
||||
os::Printer::log("Bad Current Surface", ELL_ERROR);
|
||||
break;
|
||||
case EGL_BAD_DISPLAY:
|
||||
os::Printer::log("Bad Display", ELL_ERROR);
|
||||
break;
|
||||
case EGL_BAD_SURFACE:
|
||||
os::Printer::log("Bad Surface", ELL_ERROR);
|
||||
break;
|
||||
case EGL_BAD_MATCH:
|
||||
os::Printer::log("Bad Match", ELL_ERROR);
|
||||
break;
|
||||
case EGL_BAD_PARAMETER:
|
||||
os::Printer::log("Bad Parameter", ELL_ERROR);
|
||||
break;
|
||||
case EGL_BAD_NATIVE_PIXMAP:
|
||||
os::Printer::log("Bad Native Pixmap", ELL_ERROR);
|
||||
break;
|
||||
case EGL_BAD_NATIVE_WINDOW:
|
||||
os::Printer::log("Bad Native Window", ELL_ERROR);
|
||||
break;
|
||||
case EGL_CONTEXT_LOST:
|
||||
os::Printer::log("Context Lost", ELL_ERROR);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
};
|
||||
|
||||
return true;
|
||||
#else
|
||||
return false;
|
||||
#endif
|
||||
}
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
#endif
|
||||
Loading…
Add table
Add a link
Reference in a new issue