Fixed linux build

1 files changed, 218 insertions, 0 deletions

diff --git a/Common/NativeApp/src/Linux/LinuxMain.cpp b/Common/NativeApp/src/Linux/LinuxMain.cpp
new file mode 100644
index 0000000..648696c
--- /dev/null
+++ b/Common/NativeApp/src/Linux/LinuxMain.cpp
@@ -0,0 +1,218 @@
+/*     Copyright 2015-2018 Egor Yusov

+ *  

+ *  Licensed under the Apache License, Version 2.0 (the "License");

+ *  you may not use this file except in compliance with the License.

+ *  You may obtain a copy of the License at

+ * 

+ *     http://www.apache.org/licenses/LICENSE-2.0

+ * 

+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF ANY PROPRIETARY RIGHTS.

+ *

+ *  In no event and under no legal theory, whether in tort (including negligence), 

+ *  contract, or otherwise, unless required by applicable law (such as deliberate 

+ *  and grossly negligent acts) or agreed to in writing, shall any Contributor be

+ *  liable for any damages, including any direct, indirect, special, incidental, 

+ *  or consequential damages of any character arising as a result of this License or 

+ *  out of the use or inability to use the software (including but not limited to damages 

+ *  for loss of goodwill, work stoppage, computer failure or malfunction, or any and 

+ *  all other commercial damages or losses), even if such Contributor has been advised 

+ *  of the possibility of such damages.

+ */

+

+#include <memory>

+#include <iomanip>

+

+#include "PlatformDefinitions.h"

+#include "NativeAppBase.h"

+#include "StringTools.h"

+#include "Timer.h"

+#include "Errors.h"

+

+

+#ifndef GLX_CONTEXT_MAJOR_VERSION_ARB

+#   define GLX_CONTEXT_MAJOR_VERSION_ARB       0x2091

+#endif

+

+#ifndef GLX_CONTEXT_MINOR_VERSION_ARB

+#   define GLX_CONTEXT_MINOR_VERSION_ARB       0x2092

+#endif

+

+#ifndef GLX_CONTEXT_FLAGS_ARB

+#   define GLX_CONTEXT_FLAGS_ARB               0x2094

+#endif

+

+#ifndef GLX_CONTEXT_DEBUG_BIT_ARB

+#   define GLX_CONTEXT_DEBUG_BIT_ARB           0x0001

+#endif

+

+typedef GLXContext (*glXCreateContextAttribsARBProc)(Display*, GLXFBConfig, GLXContext, int, const int*);

+ 

+

+ using namespace Diligent;

+ 

+int main (int argc, char ** argv)

+{

+    std::unique_ptr<NativeAppBase> TheApp(CreateApplication());

+    Display *display = XOpenDisplay(0);

+

+    static int visual_attribs[] =

+    {

+        GLX_RENDER_TYPE,    GLX_RGBA_BIT,

+        GLX_DRAWABLE_TYPE,  GLX_WINDOW_BIT,

+        GLX_DOUBLEBUFFER,   true,

+

+        // The largest available total RGBA color buffer size (sum of GLX_RED_SIZE, 

+        // GLX_GREEN_SIZE, GLX_BLUE_SIZE, and GLX_ALPHA_SIZE) of at least the minimum

+        // size specified for each color component is preferred.

+        GLX_RED_SIZE,       8,

+        GLX_GREEN_SIZE,     8,

+        GLX_BLUE_SIZE,      8,

+        GLX_ALPHA_SIZE,     8,

+

+        // The largest available depth buffer of at least GLX_DEPTH_SIZE size is preferred

+        GLX_DEPTH_SIZE,     24,

+

+        //GLX_SAMPLE_BUFFERS, 1,

+        GLX_SAMPLES, 1,

+        None

+     };

+ 

+    int fbcount = 0;

+    GLXFBConfig *fbc = glXChooseFBConfig(display, DefaultScreen(display), visual_attribs, &fbcount);

+    if (!fbc)

+    {

+        LOG_ERROR_MESSAGE("Failed to retrieve a framebuffer config");

+        return -1;

+    }

+ 

+    XVisualInfo *vi = glXGetVisualFromFBConfig(display, fbc[0]);

+ 

+    XSetWindowAttributes swa;

+    swa.colormap = XCreateColormap(display, RootWindow(display, vi->screen), vi->visual, AllocNone);

+    swa.border_pixel = 0;

+    swa.event_mask = 

+        StructureNotifyMask |  

+        ExposureMask |  

+        KeyPressMask | 

+        KeyReleaseMask |

+        ButtonPressMask | 

+        ButtonReleaseMask | 

+        PointerMotionMask;

+ 

+    Window win = XCreateWindow(display, RootWindow(display, vi->screen), 0, 0, 1024, 768, 0, vi->depth, InputOutput, vi->visual, CWBorderPixel|CWColormap|CWEventMask, &swa);

+    if (!win)

+    {

+        LOG_ERROR_MESSAGE("Failed to create window.");

+        return -1;

+    }

+ 

+    XMapWindow(display, win);

+ 

+    glXCreateContextAttribsARBProc glXCreateContextAttribsARB = nullptr;

+    {

+        // Create an oldstyle context first, to get the correct function pointer for glXCreateContextAttribsARB

+        GLXContext ctx_old = glXCreateContext(display, vi, 0, GL_TRUE);

+        glXCreateContextAttribsARB =  (glXCreateContextAttribsARBProc)glXGetProcAddress((const GLubyte*)"glXCreateContextAttribsARB");

+        glXMakeCurrent(display, None, NULL);

+        glXDestroyContext(display, ctx_old);

+    }

+ 

+    if (glXCreateContextAttribsARB == nullptr)

+    {

+        LOG_ERROR("glXCreateContextAttribsARB entry point not found. Aborting.");

+        return -1;

+    }

+ 

+    int Flags = GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB;

+#ifdef _DEBUG

+     Flags |= GLX_CONTEXT_DEBUG_BIT_ARB;

+#endif 

+    

+    int major_version = 4;

+    int minor_version = 3;

+    static int context_attribs[] =

+    {

+        GLX_CONTEXT_MAJOR_VERSION_ARB, major_version,

+        GLX_CONTEXT_MINOR_VERSION_ARB, minor_version,

+        GLX_CONTEXT_FLAGS_ARB, Flags,

+        None

+    };

+  

+    constexpr int True = 1;

+    GLXContext ctx = glXCreateContextAttribsARB(display, fbc[0], NULL, True, context_attribs);

+    if (!ctx)

+    {

+        LOG_ERROR("Failed to create GL context.");

+        return -1;

+    }

+    XFree(fbc);

+    

+

+    glXMakeCurrent(display, win, ctx);

+    TheApp->OnGLContextCreated(display, win);

+    std::string Title = TheApp->GetAppTitle();

+ 

+    Timer timer;

+    auto PrevTime = timer.GetElapsedTime();

+    double filteredFrameTime = 0.0;

+ 

+    while (true) 

+    {

+        bool EscPressed = false;

+        XEvent xev;

+        // Handle all events in the queue

+        while(XCheckMaskEvent(display, 0xFFFFFFFF, &xev))

+        {

+            TheApp->HandleXEvent(&xev);

+            switch(xev.type)

+            {

+                case KeyPress:

+                {

+                    KeySym keysym;

+                    char buffer[80];

+                    int num_char = XLookupString((XKeyEvent *)&xev, buffer, _countof(buffer), &keysym, 0);

+                    EscPressed = (keysym==XK_Escape);

+                }

+                

+                case ConfigureNotify:

+                {

+                    XConfigureEvent &xce = reinterpret_cast<XConfigureEvent &>(xev);

+                    if(xce.width != 0 && xce.height != 0)

+                        TheApp->WindowResize(xce.width, xce.height);

+                    break;

+                }

+            }

+        }

+

+        if(EscPressed)

+            break;

+

+        // Render the scene

+        auto CurrTime = timer.GetElapsedTime();

+        auto ElapsedTime = CurrTime - PrevTime;

+        PrevTime = CurrTime;

+

+        TheApp->Update(CurrTime, ElapsedTime);

+

+        TheApp->Render();

+        

+        TheApp->Present();

+

+        double filterScale = 0.2;

+        filteredFrameTime = filteredFrameTime * (1.0 - filterScale) + filterScale * ElapsedTime;

+        std::stringstream fpsCounterSS;

+        fpsCounterSS << " - " << std::fixed << std::setprecision(1) << filteredFrameTime * 1000;

+        fpsCounterSS << " ms (" << 1.0 / filteredFrameTime << " fps)";

+        XStoreName(display, win, (Title + fpsCounterSS.str()).c_str());

+    }

+

+    TheApp.reset();

+ 

+    ctx = glXGetCurrentContext();

+    glXMakeCurrent(display, None, NULL);

+    glXDestroyContext(display, ctx);

+    XDestroyWindow(display, win);

+    XCloseDisplay(display);

+}