add files

.gitignore

@@ -0,0 +1,4 @@
+build/
+bin/
+out/
+*.log

Build.cmd

@@ -0,0 +1,38 @@
+@echo off
+setlocal
+
+set BUILD_TYPE=Release
+
+echo:
+echo Vytvarim adresare...
+echo:
+
+mkdir bin
+mkdir build
+cd build
+
+echo:
+echo Konfiguruji...
+echo:
+
+cmake -DCMAKE_BUILD_TYPE=%BUILD_TYPE% ..
+
+echo:
+echo Kompiluji...
+echo:
+
+cmake --build . --config %BUILD_TYPE%
+
+echo:
+echo Kopiruji exe do bin...
+echo:
+
+copy %BUILD_TYPE%\MyOpenGLApp.exe ..\bin\MyOpenGLApp.exe
+
+echo:
+echo Hotovo
+echo:
+
+pause
+
+endlocal

CMakeLists.txt

@@ -0,0 +1,79 @@
+cmake_minimum_required(VERSION 3.16)
+project(MyOpenGLProject)
+
+# Set C++ standard
+set(CMAKE_CXX_STANDARD 17)
+
+# Only build on Windows
+if(WIN32)
+
+    # Use FetchContent to download GLFW and ImGui
+    include(FetchContent)
+
+    FetchContent_Declare(
+      glad
+      GIT_REPOSITORY https://github.com/Dav1dde/glad.git
+      GIT_TAG        v2.0.7  # Latest version at the time of writing
+    )
+    FetchContent_MakeAvailable(glad)
+
+    # Download GLFW
+    FetchContent_Declare(
+      glfw
+      GIT_REPOSITORY https://github.com/glfw/glfw.git
+      GIT_TAG        3.4  # Latest stable version
+    )
+    FetchContent_MakeAvailable(glfw)
+
+    # Download ImGui
+    FetchContent_Declare(
+      imgui
+      GIT_REPOSITORY https://github.com/ocornut/imgui.git
+      GIT_TAG        v1.91.1  # Latest stable version
+    )
+
+    FetchContent_MakeAvailable(imgui)
+        # Set up ImGui backends for GLFW and OpenGL3
+    set(IMGUI_BACKENDS "${imgui_SOURCE_DIR}/backends")
+    set(IMGUI_SOURCES
+        ${imgui_SOURCE_DIR}/imgui.cpp
+        ${imgui_SOURCE_DIR}/imgui_demo.cpp
+        ${imgui_SOURCE_DIR}/imgui_draw.cpp
+        ${imgui_SOURCE_DIR}/imgui_tables.cpp
+        ${imgui_SOURCE_DIR}/imgui_widgets.cpp
+        ${IMGUI_BACKENDS}/imgui_impl_glfw.cpp
+        ${IMGUI_BACKENDS}/imgui_impl_opengl3.cpp
+    )
+    
+    set(glad_SOURCE_DIR src/vendor/glad)
+
+    add_library(glad ${glad_SOURCE_DIR}/src/glad.c)
+    target_include_directories(glad PUBLIC ${glad_SOURCE_DIR}/include)
+
+    set (APP_SOURCES
+        src/main.cpp
+    )
+
+    # Define your executable and include ImGui and backend sources
+    add_executable(MyOpenGLApp WIN32 ${APP_SOURCES} ${IMGUI_SOURCES})
+
+    # Include directories for ImGui, GLEW, and GLFW
+    target_include_directories(MyOpenGLApp PRIVATE
+        ${imgui_SOURCE_DIR}
+        ${IMGUI_BACKENDS}
+        ${glfw_SOURCE_DIR}/include
+        ${glad_SOURCE_DIR}/include
+    )
+
+    # Link against Windows-specific libraries, GLEW, GLFW, and OpenGL
+    target_link_libraries(MyOpenGLApp PRIVATE
+        glfw
+        glad
+    )
+
+    # Define GLEW_STATIC for static linking of GLEW
+    # target_compile_definitions(MyOpenGLApp PRIVATE GLEW_STATIC)
+
+else()
+    message(FATAL_ERROR "This project is only supported on Windows.")
+endif()

Run.cmd

@@ -0,0 +1 @@
+start /D bin MyOpenGLApp

src/main.cpp

@@ -0,0 +1,102 @@
+#include <glad/glad.h>  // Use GLAD instead of GLEW
+#include <GLFW/glfw3.h>
+#include "imgui.h"
+#include "imgui_impl_glfw.h"
+#include "imgui_impl_opengl3.h"
+#include <iostream>
+
+#define NOMINMAX
+#include <windows.h>
+
+// GLFW error callback function
+void glfw_error_callback(int error, const char* description) {
+    std::cerr << "GLFW Error " << error << ": " << description << std::endl;
+}
+
+int main();
+
+int CALLBACK WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) {
+    return main();
+}
+
+int main() {
+    // Setup window
+    glfwSetErrorCallback(glfw_error_callback);
+    if (!glfwInit()) {
+        std::cerr << "Failed to initialize GLFW" << std::endl;
+        return -1;
+    }
+
+    // Create a windowed mode window and its OpenGL context
+    GLFWwindow* window = glfwCreateWindow(1280, 720, "ImGui + GLFW + GLAD Example", nullptr, nullptr);
+    if (!window) {
+        std::cerr << "Failed to create GLFW window" << std::endl;
+        glfwTerminate();
+        return -1;
+    }
+
+    glfwMakeContextCurrent(window);
+    glfwSwapInterval(0); // Enable vsync
+
+    // Initialize GLAD
+    if (!gladLoadGLLoader((GLADloadproc)glfwGetProcAddress)) {
+        std::cerr << "Failed to initialize GLAD" << std::endl;
+        return -1;
+    }
+
+    // Setup Dear ImGui context
+    IMGUI_CHECKVERSION();
+    ImGui::CreateContext();
+    ImGuiIO& io = ImGui::GetIO(); //(void)io;
+    io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\segoeui.ttf", 18);
+
+    // Setup Dear ImGui style
+    ImGui::StyleColorsDark();
+
+    // Setup Platform/Renderer bindings
+    ImGui_ImplGlfw_InitForOpenGL(window, true);
+    ImGui_ImplOpenGL3_Init("#version 130");
+
+    // Main loop
+    while (!glfwWindowShouldClose(window)) {
+        // Poll and handle events (inputs, window resize, etc.)
+        //glfwPollEvents();
+        glfwWaitEventsTimeout(0.1);
+
+        // Start the ImGui frame
+        ImGui_ImplOpenGL3_NewFrame();
+        ImGui_ImplGlfw_NewFrame();
+        ImGui::NewFrame();
+
+        // Create a simple ImGui window
+        {
+            ImGui::Begin("Hello, world!");   // Create a window called "Hello, world!"
+            ImGui::Text("This is a simple window using ImGui and GLFW.");
+            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+            ImGui::End();
+        }
+
+        ImGui::ShowDemoWindow();
+
+        // Rendering
+        ImGui::Render();
+        int display_w, display_h;
+        glfwGetFramebufferSize(window, &display_w, &display_h);
+        glViewport(0, 0, display_w, display_h);
+        glClearColor(0.45f, 0.55f, 0.60f, 1.00f);
+        glClear(GL_COLOR_BUFFER_BIT);
+        ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
+
+        // Swap buffers
+        glfwSwapBuffers(window);
+    }
+
+    // Cleanup
+    ImGui_ImplOpenGL3_Shutdown();
+    ImGui_ImplGlfw_Shutdown();
+    ImGui::DestroyContext();
+    glfwDestroyWindow(window);
+    glfwTerminate();
+
+    return 0;
+}

src/vendor/glad/include/KHR/khrplatform.h

@@ -0,0 +1,311 @@
+#ifndef __khrplatform_h_
+#define __khrplatform_h_
+
+/*
+** Copyright (c) 2008-2018 The Khronos Group Inc.
+**
+** Permission is hereby granted, free of charge, to any person obtaining a
+** copy of this software and/or associated documentation files (the
+** "Materials"), to deal in the Materials without restriction, including
+** without limitation the rights to use, copy, modify, merge, publish,
+** distribute, sublicense, and/or sell copies of the Materials, and to
+** permit persons to whom the Materials are furnished to do so, subject to
+** the following conditions:
+**
+** The above copyright notice and this permission notice shall be included
+** in all copies or substantial portions of the Materials.
+**
+** THE MATERIALS ARE 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.
+** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
+*/
+
+/* Khronos platform-specific types and definitions.
+ *
+ * The master copy of khrplatform.h is maintained in the Khronos EGL
+ * Registry repository at https://github.com/KhronosGroup/EGL-Registry
+ * The last semantic modification to khrplatform.h was at commit ID:
+ *      67a3e0864c2d75ea5287b9f3d2eb74a745936692
+ *
+ * Adopters may modify this file to suit their platform. Adopters are
+ * encouraged to submit platform specific modifications to the Khronos
+ * group so that they can be included in future versions of this file.
+ * Please submit changes by filing pull requests or issues on
+ * the EGL Registry repository linked above.
+ *
+ *
+ * See the Implementer's Guidelines for information about where this file
+ * should be located on your system and for more details of its use:
+ *    http://www.khronos.org/registry/implementers_guide.pdf
+ *
+ * This file should be included as
+ *        #include <KHR/khrplatform.h>
+ * by Khronos client API header files that use its types and defines.
+ *
+ * The types in khrplatform.h should only be used to define API-specific types.
+ *
+ * Types defined in khrplatform.h:
+ *    khronos_int8_t              signed   8  bit
+ *    khronos_uint8_t             unsigned 8  bit
+ *    khronos_int16_t             signed   16 bit
+ *    khronos_uint16_t            unsigned 16 bit
+ *    khronos_int32_t             signed   32 bit
+ *    khronos_uint32_t            unsigned 32 bit
+ *    khronos_int64_t             signed   64 bit
+ *    khronos_uint64_t            unsigned 64 bit
+ *    khronos_intptr_t            signed   same number of bits as a pointer
+ *    khronos_uintptr_t           unsigned same number of bits as a pointer
+ *    khronos_ssize_t             signed   size
+ *    khronos_usize_t             unsigned size
+ *    khronos_float_t             signed   32 bit floating point
+ *    khronos_time_ns_t           unsigned 64 bit time in nanoseconds
+ *    khronos_utime_nanoseconds_t unsigned time interval or absolute time in
+ *                                         nanoseconds
+ *    khronos_stime_nanoseconds_t signed time interval in nanoseconds
+ *    khronos_boolean_enum_t      enumerated boolean type. This should
+ *      only be used as a base type when a client API's boolean type is
+ *      an enum. Client APIs which use an integer or other type for
+ *      booleans cannot use this as the base type for their boolean.
+ *
+ * Tokens defined in khrplatform.h:
+ *
+ *    KHRONOS_FALSE, KHRONOS_TRUE Enumerated boolean false/true values.
+ *
+ *    KHRONOS_SUPPORT_INT64 is 1 if 64 bit integers are supported; otherwise 0.
+ *    KHRONOS_SUPPORT_FLOAT is 1 if floats are supported; otherwise 0.
+ *
+ * Calling convention macros defined in this file:
+ *    KHRONOS_APICALL
+ *    KHRONOS_APIENTRY
+ *    KHRONOS_APIATTRIBUTES
+ *
+ * These may be used in function prototypes as:
+ *
+ *      KHRONOS_APICALL void KHRONOS_APIENTRY funcname(
+ *                                  int arg1,
+ *                                  int arg2) KHRONOS_APIATTRIBUTES;
+ */
+
+#if defined(__SCITECH_SNAP__) && !defined(KHRONOS_STATIC)
+#   define KHRONOS_STATIC 1
+#endif
+
+/*-------------------------------------------------------------------------
+ * Definition of KHRONOS_APICALL
+ *-------------------------------------------------------------------------
+ * This precedes the return type of the function in the function prototype.
+ */
+#if defined(KHRONOS_STATIC)
+    /* If the preprocessor constant KHRONOS_STATIC is defined, make the
+     * header compatible with static linking. */
+#   define KHRONOS_APICALL
+#elif defined(_WIN32)
+#   define KHRONOS_APICALL __declspec(dllimport)
+#elif defined (__SYMBIAN32__)
+#   define KHRONOS_APICALL IMPORT_C
+#elif defined(__ANDROID__)
+#   define KHRONOS_APICALL __attribute__((visibility("default")))
+#else
+#   define KHRONOS_APICALL
+#endif
+
+/*-------------------------------------------------------------------------
+ * Definition of KHRONOS_APIENTRY
+ *-------------------------------------------------------------------------
+ * This follows the return type of the function  and precedes the function
+ * name in the function prototype.
+ */
+#if defined(_WIN32) && !defined(_WIN32_WCE) && !defined(__SCITECH_SNAP__)
+    /* Win32 but not WinCE */
+#   define KHRONOS_APIENTRY __stdcall
+#else
+#   define KHRONOS_APIENTRY
+#endif
+
+/*-------------------------------------------------------------------------
+ * Definition of KHRONOS_APIATTRIBUTES
+ *-------------------------------------------------------------------------
+ * This follows the closing parenthesis of the function prototype arguments.
+ */
+#if defined (__ARMCC_2__)
+#define KHRONOS_APIATTRIBUTES __softfp
+#else
+#define KHRONOS_APIATTRIBUTES
+#endif
+
+/*-------------------------------------------------------------------------
+ * basic type definitions
+ *-----------------------------------------------------------------------*/
+#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || defined(__GNUC__) || defined(__SCO__) || defined(__USLC__)
+
+
+/*
+ * Using <stdint.h>
+ */
+#include <stdint.h>
+typedef int32_t                 khronos_int32_t;
+typedef uint32_t                khronos_uint32_t;
+typedef int64_t                 khronos_int64_t;
+typedef uint64_t                khronos_uint64_t;
+#define KHRONOS_SUPPORT_INT64   1
+#define KHRONOS_SUPPORT_FLOAT   1
+/*
+ * To support platform where unsigned long cannot be used interchangeably with
+ * inptr_t (e.g. CHERI-extended ISAs), we can use the stdint.h intptr_t.
+ * Ideally, we could just use (u)intptr_t everywhere, but this could result in
+ * ABI breakage if khronos_uintptr_t is changed from unsigned long to
+ * unsigned long long or similar (this results in different C++ name mangling).
+ * To avoid changes for existing platforms, we restrict usage of intptr_t to
+ * platforms where the size of a pointer is larger than the size of long.
+ */
+#if defined(__SIZEOF_LONG__) && defined(__SIZEOF_POINTER__)
+#if __SIZEOF_POINTER__ > __SIZEOF_LONG__
+#define KHRONOS_USE_INTPTR_T
+#endif
+#endif
+
+#elif defined(__VMS ) || defined(__sgi)
+
+/*
+ * Using <inttypes.h>
+ */
+#include <inttypes.h>
+typedef int32_t                 khronos_int32_t;
+typedef uint32_t                khronos_uint32_t;
+typedef int64_t                 khronos_int64_t;
+typedef uint64_t                khronos_uint64_t;
+#define KHRONOS_SUPPORT_INT64   1
+#define KHRONOS_SUPPORT_FLOAT   1
+
+#elif defined(_WIN32) && !defined(__SCITECH_SNAP__)
+
+/*
+ * Win32
+ */
+typedef __int32                 khronos_int32_t;
+typedef unsigned __int32        khronos_uint32_t;
+typedef __int64                 khronos_int64_t;
+typedef unsigned __int64        khronos_uint64_t;
+#define KHRONOS_SUPPORT_INT64   1
+#define KHRONOS_SUPPORT_FLOAT   1
+
+#elif defined(__sun__) || defined(__digital__)
+
+/*
+ * Sun or Digital
+ */
+typedef int                     khronos_int32_t;
+typedef unsigned int            khronos_uint32_t;
+#if defined(__arch64__) || defined(_LP64)
+typedef long int                khronos_int64_t;
+typedef unsigned long int       khronos_uint64_t;
+#else
+typedef long long int           khronos_int64_t;
+typedef unsigned long long int  khronos_uint64_t;
+#endif /* __arch64__ */
+#define KHRONOS_SUPPORT_INT64   1
+#define KHRONOS_SUPPORT_FLOAT   1
+
+#elif 0
+
+/*
+ * Hypothetical platform with no float or int64 support
+ */
+typedef int                     khronos_int32_t;
+typedef unsigned int            khronos_uint32_t;
+#define KHRONOS_SUPPORT_INT64   0
+#define KHRONOS_SUPPORT_FLOAT   0
+
+#else
+
+/*
+ * Generic fallback
+ */
+#include <stdint.h>
+typedef int32_t                 khronos_int32_t;
+typedef uint32_t                khronos_uint32_t;
+typedef int64_t                 khronos_int64_t;
+typedef uint64_t                khronos_uint64_t;
+#define KHRONOS_SUPPORT_INT64   1
+#define KHRONOS_SUPPORT_FLOAT   1
+
+#endif
+
+
+/*
+ * Types that are (so far) the same on all platforms
+ */
+typedef signed   char          khronos_int8_t;
+typedef unsigned char          khronos_uint8_t;
+typedef signed   short int     khronos_int16_t;
+typedef unsigned short int     khronos_uint16_t;
+
+/*
+ * Types that differ between LLP64 and LP64 architectures - in LLP64,
+ * pointers are 64 bits, but 'long' is still 32 bits. Win64 appears
+ * to be the only LLP64 architecture in current use.
+ */
+#ifdef KHRONOS_USE_INTPTR_T
+typedef intptr_t               khronos_intptr_t;
+typedef uintptr_t              khronos_uintptr_t;
+#elif defined(_WIN64)
+typedef signed   long long int khronos_intptr_t;
+typedef unsigned long long int khronos_uintptr_t;
+#else
+typedef signed   long  int     khronos_intptr_t;
+typedef unsigned long  int     khronos_uintptr_t;
+#endif
+
+#if defined(_WIN64)
+typedef signed   long long int khronos_ssize_t;
+typedef unsigned long long int khronos_usize_t;
+#else
+typedef signed   long  int     khronos_ssize_t;
+typedef unsigned long  int     khronos_usize_t;
+#endif
+
+#if KHRONOS_SUPPORT_FLOAT
+/*
+ * Float type
+ */
+typedef          float         khronos_float_t;
+#endif
+
+#if KHRONOS_SUPPORT_INT64
+/* Time types
+ *
+ * These types can be used to represent a time interval in nanoseconds or
+ * an absolute Unadjusted System Time.  Unadjusted System Time is the number
+ * of nanoseconds since some arbitrary system event (e.g. since the last
+ * time the system booted).  The Unadjusted System Time is an unsigned
+ * 64 bit value that wraps back to 0 every 584 years.  Time intervals
+ * may be either signed or unsigned.
+ */
+typedef khronos_uint64_t       khronos_utime_nanoseconds_t;
+typedef khronos_int64_t        khronos_stime_nanoseconds_t;
+#endif
+
+/*
+ * Dummy value used to pad enum types to 32 bits.
+ */
+#ifndef KHRONOS_MAX_ENUM
+#define KHRONOS_MAX_ENUM 0x7FFFFFFF
+#endif
+
+/*
+ * Enumerated boolean type
+ *
+ * Values other than zero should be considered to be true.  Therefore
+ * comparisons should not be made against KHRONOS_TRUE.
+ */
+typedef enum {
+    KHRONOS_FALSE = 0,
+    KHRONOS_TRUE  = 1,
+    KHRONOS_BOOLEAN_ENUM_FORCE_SIZE = KHRONOS_MAX_ENUM
+} khronos_boolean_enum_t;
+
+#endif /* __khrplatform_h_ */