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feat: initialize OpenGL

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zhenyan121
2026-03-05 17:01:01 +08:00
parent 83c271ec8f
commit 9fe1eaec24
21 changed files with 5866 additions and 0 deletions
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41
.gitignore vendored Normal file
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*.o
*.obj
*.so
*.dylib
*.dll
*.a
*.lib
*.exe
*.out
*.app
*.ilk
*.pdb
*.idb
*.pch
*.sbr
build/
Build/
bin/
Debug/
Release/
x64/
x86/
out/
.vs/
.vscode/
.idea/
*.user
*.suo
*.sln.docstates
CMakeCache.txt
CMakeFiles/
cmake_install.cmake
Makefile
CMakeOutput.log
CMakeError.log
*.log
*.tmp
*.swp
*.swo
*~
.DS_Store

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CMakeLists.txt Normal file
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cmake_minimum_required(VERSION 3.14...3.24)
project(Cubed LANGUAGES C CXX)
set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)
if(NOT CMAKE_BUILD_TYPE)
set(CMAKE_BUILD_TYPE Debug)
endif()
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/${PROJECT_NAME})
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/${PROJECT_NAME})
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
find_package(PkgConfig REQUIRED)
find_package(OpenGL REQUIRED)
pkg_check_modules(EGL REQUIRED egl)
pkg_check_modules(Wayland REQUIRED wayland-client wayland-egl)
find_package(glfw3 REQUIRED)
add_library(glad STATIC third_party/glad/src/glad.c)
target_include_directories(glad PUBLIC third_party/glad/include)
include(FetchContent)
FetchContent_Declare(
glm
GIT_REPOSITORY https://github.com/g-truc/glm.git
GIT_TAG 1.0.3
)
FetchContent_MakeAvailable(glm)
FetchContent_Declare(
soil2
GIT_REPOSITORY https://github.com/SpartanJ/SOIL2.git
GIT_TAG 1.31
)
FetchContent_MakeAvailable(soil2)
set(INCLUDE_DIR ${PROJECT_SOURCE_DIR}/include)
add_executable(${PROJECT_NAME}
src/main.cpp
src/tools/shader_tools.cpp
src/tools/log.cpp
src/camera.cpp
)
target_include_directories(${PROJECT_NAME} PUBLIC ${INCLUDE_DIR})
target_link_libraries(${PROJECT_NAME}
PRIVATE
${EGL_LIBRARIES}
${Wayland_LIBRARIES}
glfw
glad
glm::glm
OpenGL::GL
soil2
)
target_include_directories(${PROJECT_NAME}
PRIVATE
${EGL_INCLUDE_DIRS}
${Wayland_INCLUDE_DIRS}
)
target_compile_options(${PROJECT_NAME} PRIVATE ${EGL_CFLAGS_OTHER} ${Wayland_CFLAGS_OTHER})
add_custom_command(TARGET ${PROJECT_NAME} POST_BUILD
COMMAND ${CMAKE_COMMAND} -E copy_directory
"${PROJECT_SOURCE_DIR}/src/shaders"
"$<TARGET_FILE_DIR:${PROJECT_NAME}>/shaders"
COMMENT "Copying shaders to output directory"
)

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## What's it
A cube game like Minecraft, using C++ and OpenGL.

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include/Cubed/camera.hpp Normal file
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#pragma once
#include <glm/glm.hpp>
#include <glm/gtc/matrix_transform.hpp>
#include <glm/gtc/type_ptr.hpp>
#include <glad/glad.h>
#include <GLFW/glfw3.h>
struct MoveState {
bool forward = false;
bool back = false;
bool left = false;
bool right = false;
bool down = false;
bool up = false;
};
void updateMoveCamera();
void cameraInit();
void changeView(float offsetX, float offsetY);
void updateCursorPositionCamera(double xpos, double ypos);
glm::mat4 getCameraLookAt();
void updateCameraKey(int key, int action);

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include/Cubed/tools/log.hpp Normal file
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#pragma once
#include <iostream>
#include <chrono>
#include <format>
#include <string>
namespace LOG {
template<typename... Args>
void info(const char * fmt, Args&&... args) {
auto now_time = std::chrono::
time_point_cast<std::chrono::seconds>
(std::chrono::system_clock::now());
std::string msg = std::vformat(fmt, std::make_format_args(args...));
std::cout << "\033[1;32m"
<< std::format("[INFO][{:%Y-%m-%d %H:%M:%S}]", now_time)
<< msg
<< "\033[0m"
<< std::endl;
}
template<typename... Args>
void error(const char * fmt, Args&&... args) {
auto now_time = std::chrono::
time_point_cast<std::chrono::seconds>
(std::chrono::system_clock::now());
std::string msg = std::vformat(fmt, std::make_format_args(args...));
std::cout << "\033[1;31m"
<< std::format("[ERROR][{:%Y-%m-%d %H:%M:%S}]", now_time)
<< msg
<< "\033[0m"
<< std::endl;
}
template<typename... Args>
void warn(const char * fmt, Args&&... args) {
auto now_time = std::chrono::
time_point_cast<std::chrono::seconds>
(std::chrono::system_clock::now());
std::string msg = std::vformat(fmt, std::make_format_args(args...));
std::cout << "\033[1;33m"
<< std::format("[WARN][{:%Y-%m-%d %H:%M:%S}]", now_time)
<< msg
<< "\033[0m"
<< std::endl;
}
}

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include/Cubed/tools/shader_tools.hpp Normal file
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#pragma once
#include <glad/glad.h>
#include <iostream>
#include <cstdlib>
#include <fstream>
#include <string>
#include <SOIL2.h>
void printShaderLog(GLuint shader);
void printProgramInfo(int prog);
bool checkOpenGLError();
std::string readShaderSource(const char* filePath);
GLuint loadTexture(const char* texImagePath);

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src/camera.cpp Normal file
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#include "Cubed/camera.hpp"
static glm::vec3 cameraPos;
static float speed = 0.1f;
static float lastMouseX, lastMouseY;
static bool firseMouse = true;
static MoveState moveState;
static float yaw, pitch;
static glm::vec3 front = glm::vec3(0, 0, -1);
static float sensitivity = 0.05f;
static glm::vec3 rightPos;
void updateMoveCamera() {
rightPos = glm::normalize(glm::cross(front, glm::vec3(0.0f, 1.0f, 0.0f)));
if (moveState.forward) {
cameraPos += glm::vec3(front.x, 0.0f, front.z) * speed;
}
if (moveState.back) {
cameraPos -= glm::vec3(front.x, 0.0f, front.z) * speed;
}
if (moveState.left) {
cameraPos -= glm::vec3(rightPos.x, 0.0f, rightPos.z) * speed;
}
if (moveState.right) {
cameraPos += glm::vec3(rightPos.x, 0.0f, rightPos.z) * speed;
}
if (moveState.up) {
cameraPos += glm::vec3(0.0f, 1.0f, 0.0f) * speed;;
}
if (moveState.down) {
cameraPos -= glm::vec3(0.0f, 1.0f, 0.0f) * speed;;
}
}
void cameraInit() {
cameraPos = glm::vec3(0.0f, 0.0f, 5.0f);
}
void changeView(float offsetX, float offsetY) {
yaw += offsetX * sensitivity;
pitch += offsetY * sensitivity;
if (pitch > 89.0f) pitch = 89.0f;
if (pitch < -89.0f) pitch = -89.0f;
front.x = sin(glm::radians(yaw)) * cos(glm::radians(pitch));
front.y = sin(glm::radians(pitch));
front.z = -cos(glm::radians(yaw)) * cos(glm::radians(pitch));
front = glm::normalize(front);
}
void updateCursorPositionCamera(double xpos, double ypos) {
if (firseMouse) {
lastMouseX = xpos;
lastMouseY = ypos;
firseMouse = false;
}
float offsetX = xpos - lastMouseX;
float offsetY = lastMouseY - ypos;
lastMouseX = xpos;
lastMouseY = ypos;
changeView(offsetX, offsetY);
}
glm::mat4 getCameraLookAt() {
return glm::lookAt(cameraPos, cameraPos + front, glm::vec3(0.0f, 1.0f, 0.0f));
}
void updateCameraKey(int key, int action) {
switch(key) {
case GLFW_KEY_W:
if (action == GLFW_PRESS) {
moveState.forward = true;
}
if (action == GLFW_RELEASE) {
moveState.forward = false;
}
break;
case GLFW_KEY_S:
if (action == GLFW_PRESS) {
moveState.back = true;
}
if (action == GLFW_RELEASE) {
moveState.back = false;
}
break;
case GLFW_KEY_A:
if (action == GLFW_PRESS) {
moveState.left = true;
}
if (action == GLFW_RELEASE) {
moveState.left = false;
}
break;
case GLFW_KEY_D:
if (action == GLFW_PRESS) {
moveState.right = true;
}
if (action == GLFW_RELEASE) {
moveState.right = false;
}
break;
case GLFW_KEY_SPACE:
if (action == GLFW_PRESS) {
moveState.up = true;
}
if (action == GLFW_RELEASE) {
moveState.up = false;
}
break;
case GLFW_KEY_LEFT_SHIFT:
if (action == GLFW_PRESS) {
moveState.down = true;
}
if (action == GLFW_RELEASE) {
moveState.down = false;
}
break;
}
}

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#include <fstream>
#include <iostream>
#include <stack>
#include <string>
#include <vector>
#include <glad/glad.h>
#include <GLFW/glfw3.h>
#include <glm/glm.hpp>
#include <glm/gtc/matrix_transform.hpp>
#include <glm/gtc/type_ptr.hpp>
#include <Cubed/camera.hpp>
#include <Cubed/tools/log.hpp>
#include <Cubed/tools/shader_tools.hpp>
constexpr int numVAOs = 1;
constexpr int numVBOs = 3;
GLuint renderingProgram;
GLuint vao[numVAOs];
GLuint vbo[numVBOs];
GLuint pyrTexture;
float cubLocX, cubLocY, cubLocZ;
float pyLocX, pyLocY, pyLocZ;
GLuint mvLoc, projLoc, tfLoc;
int width ,height;
float aspect;
glm::mat4 pMat, vMat, mMat, mvMat;
float inc = 0.01f;
float tf = 0.0f;
glm::mat4 tMat, rMat, sMat;
void setupVertices(void) {
float verticesPos[108] = {
// ===== 后面 (z = -1) =====
-1.0f, -1.0f, -1.0f, // 左下
1.0f, -1.0f, -1.0f, // 右下
1.0f, 1.0f, -1.0f, // 右上
1.0f, 1.0f, -1.0f, // 右上
-1.0f, 1.0f, -1.0f, // 左上
-1.0f, -1.0f, -1.0f, // 左下
// ===== 前面 (z = +1) =====
-1.0f, -1.0f, 1.0f, // 左下
-1.0f, 1.0f, 1.0f, // 左上
1.0f, 1.0f, 1.0f, // 右上
1.0f, 1.0f, 1.0f, // 右上
1.0f, -1.0f, 1.0f, // 右下
-1.0f, -1.0f, 1.0f, // 左下
// ===== 左面 (x = -1) =====
-1.0f, -1.0f, -1.0f, // 后下
-1.0f, -1.0f, 1.0f, // 前下
-1.0f, 1.0f, 1.0f, // 前上
-1.0f, 1.0f, 1.0f, // 前上
-1.0f, 1.0f, -1.0f, // 后上
-1.0f, -1.0f, -1.0f, // 后下
// ===== 右面 (x = +1) =====
1.0f, -1.0f, 1.0f, // 前下
1.0f, -1.0f, -1.0f, // 后下
1.0f, 1.0f, -1.0f, // 后上
1.0f, 1.0f, -1.0f, // 后上
1.0f, 1.0f, 1.0f, // 前上
1.0f, -1.0f, 1.0f, // 前下
// ===== 上面 (y = +1) =====
-1.0f, 1.0f, -1.0f, // 后左
1.0f, 1.0f, -1.0f, // 后右
1.0f, 1.0f, 1.0f, // 前右
1.0f, 1.0f, 1.0f, // 前右
-1.0f, 1.0f, 1.0f, // 前左
-1.0f, 1.0f, -1.0f, // 后左
// ===== 下面 (y = -1) =====
-1.0f, -1.0f, 1.0f, // 前左
1.0f, -1.0f, 1.0f, // 前右
1.0f, -1.0f, -1.0f, // 后右
1.0f, -1.0f, -1.0f, // 后右
-1.0f, -1.0f, -1.0f, // 后左
-1.0f, -1.0f, 1.0f // 前左
};
float tex_coords[72] {
0.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 0.0f,
0.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 0.0f,
0.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 0.0f,
0.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 0.0f,
0.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 0.0f,
0.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 0.0f,
};
glGenVertexArrays(numVAOs, vao);
glBindVertexArray(vao[0]);
glGenBuffers(numVBOs, vbo);
glBindBuffer(GL_ARRAY_BUFFER, vbo[0]);
glBufferData(GL_ARRAY_BUFFER, sizeof(verticesPos), verticesPos, GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, vbo[1]);
glBufferData(GL_ARRAY_BUFFER, sizeof(tex_coords), tex_coords, GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindVertexArray(0);
}
GLuint createShaderProgram() {
std::string vShaderStr = readShaderSource("shaders/vShader.glsl");
std::string fShaderStr = readShaderSource("shaders/fShader.glsl");
const char *vshaderSource = vShaderStr.c_str();
const char *fshaderSource = fShaderStr.c_str();
GLuint vShader = glCreateShader(GL_VERTEX_SHADER);
GLuint fShader = glCreateShader(GL_FRAGMENT_SHADER);
GLint vc, fc;
glShaderSource(vShader, 1, &vshaderSource, NULL);
glShaderSource(fShader, 1, &fshaderSource, NULL);
glCompileShader(vShader);
checkOpenGLError();
glGetShaderiv(vShader, GL_COMPILE_STATUS, &vc);
if (vc != 1) {
LOG::error("vertex compilation failed");
printShaderLog(vShader);
}
glCompileShader(fShader);
checkOpenGLError();
glGetShaderiv(fShader, GL_COMPILE_STATUS, &fc);
if (fc != 1) {
LOG::error("vertex compilation failed");
printShaderLog(fShader);
}
GLuint vfProgram = glCreateProgram();
glAttachShader(vfProgram, vShader);
glAttachShader(vfProgram, fShader);
glLinkProgram(vfProgram);
GLint linked;
checkOpenGLError();
glGetProgramiv(vfProgram, GL_LINK_STATUS, &linked);
if (linked != 1) {
LOG::error("linking failed");
printProgramInfo(vfProgram);
}
return vfProgram;
}
void init(GLFWwindow* window) {
renderingProgram = createShaderProgram();
cubLocX = 0.0f;
cubLocY = -2.0f;
cubLocZ = 0.0f;
pyLocX = 0.0f;
pyLocY = -2.0f;
pyLocZ = -20.0f;
cameraInit();
glfwGetFramebufferSize(window, &width, &height);
aspect = (float)width / (float)height;
glViewport(0, 0, width, height);
pMat = glm::perspective(glm::radians(60.0f), aspect, 0.1f, 1000.0f);
pyrTexture = loadTexture("assets/texture/block/grass_block/top.png");
setupVertices();
}
void window_reshape_callback(GLFWwindow* window, int newWidth, int newHeight) {
glfwGetFramebufferSize(window, &width, &height);
aspect = (float)width / (float)height;
glViewport(0, 0, width, height);
pMat = glm::perspective(glm::radians(60.0f), aspect, 0.1f, 1000.0f);
}
void cursor_position_callback(GLFWwindow* window, double xpos, double ypos) {
updateCursorPositionCamera(xpos, ypos);
}
void display(GLFWwindow* window, double currentTime) {
updateMoveCamera();
glClearColor(0.0, 0.0, 0.0, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
glClear(GL_DEPTH_BUFFER_BIT);
glUseProgram(renderingProgram);
mvLoc = glGetUniformLocation(renderingProgram, "mv_matrix");
projLoc = glGetUniformLocation(renderingProgram, "proj_matrix");
/*
cameraX += inc;
if (cameraX > 1.0f) {
inc = -inc;
}
if (cameraX < -1.0f) {
inc = -inc;
}
*/
glBindVertexArray(vao[0]);
//sMat = glm::scale(glm::mat4(1.0f), glm::vec3(0.3f, 0.3f, 0.3f));
mMat = glm::translate(glm::mat4(1.0f), glm::vec3(pyLocX, pyLocY, pyLocZ));
vMat = getCameraLookAt();
mvMat = vMat * mMat;
glUniformMatrix4fv(mvLoc, 1, GL_FALSE, glm::value_ptr(mvMat));
glUniformMatrix4fv(projLoc, 1 ,GL_FALSE, glm::value_ptr(pMat));
glBindBuffer(GL_ARRAY_BUFFER, vbo[0]);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, 0);
glEnableVertexAttribArray(0);
glBindBuffer(GL_ARRAY_BUFFER, vbo[1]);
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 0, 0);
glEnableVertexAttribArray(1);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, pyrTexture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
glGenerateMipmap(GL_TEXTURE_2D);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);
//glPointSize(30.0f);
glDrawArrays(GL_TRIANGLES, 0, 36);
}
void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods) {
switch(key) {
case GLFW_KEY_ESCAPE:
if (action == GLFW_PRESS) {
if (glfwGetInputMode(window, GLFW_CURSOR) == GLFW_CURSOR_DISABLED) {
glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_NORMAL);
} else if (glfwGetInputMode(window, GLFW_CURSOR) == GLFW_CURSOR_NORMAL) {
glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
}
}
break;
}
updateCameraKey(key, action);
}
int main() {
if (!glfwInit()) {
LOG::error("glfwinit fail");
exit(EXIT_FAILURE);
}
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 4);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
GLFWwindow* window = glfwCreateWindow(800, 600, "Cubed", NULL, NULL);
glfwMakeContextCurrent(window);
if (!gladLoadGLLoader((GLADloadproc)glfwGetProcAddress)) {
LOG::error("Failed to initialize glad");
return -1;
}
LOG::info("OpenGL Version: {}.{}", GLVersion.major, GLVersion.minor);
LOG::info("Renderer: {}", reinterpret_cast<const char*>(glGetString(GL_RENDERER)));
glfwSwapInterval(1);
glfwSetWindowSizeCallback(window, window_reshape_callback);
glfwSetKeyCallback(window, key_callback);
glfwSetCursorPosCallback(window, cursor_position_callback);
init(window);
glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
while(!glfwWindowShouldClose(window)) {
display(window, glfwGetTime());
glfwSwapBuffers(window);
glfwPollEvents();
}
glfwDestroyWindow(window);
glfwTerminate();
exit(EXIT_SUCCESS);
}

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src/shaders/fShader.glsl Normal file
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#version 430
in vec2 tc;
in vec4 varyingColor;
out vec4 color;
layout (binding = 0) uniform sampler2D samp;
void main(void) {
color = texture(samp, tc);
//color = varyingColor;
}

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#version 430
layout (location = 0) in vec3 pos;
layout (location = 1) in vec2 texCoord;
out vec2 tc;
mat4 buildRotateX(float rad);
mat4 buildRotateY(float rad);
mat4 buildRotateZ(float rad);
mat4 buildTranslate(float x, float y, float z);
uniform mat4 mv_matrix;
uniform mat4 proj_matrix;
out vec4 varyingColor;
layout (binding = 0) uniform sampler2D samp;
void main(void) {
gl_Position = proj_matrix * mv_matrix * vec4(pos, 1.0);
tc = texCoord;
varyingColor = vec4(pos, 1.0) * 0.5 + vec4(0.5, 0.5, 0.5, 0.5);
}
mat4 buildTranslate(float x, float y, float z) {
mat4 trans = mat4(
1.0, 0.0, 0.0, 0.0,
0.0, 1.0, 0.0, 0.0,
0.0, 0.0, 1.0, 0.0,
x, y, z, 1.0
);
return trans;
}
mat4 buildRotateX(float rad) {
mat4 xrot = mat4(
1.0, 0.0, 0.0, 0.0,
0.0, cos(rad), -sin(rad), 0.0,
0.0, sin(rad), cos(rad), 0.0,
0.0, 0.0, 0.0, 1.0
);
return xrot;
}
mat4 buildRotateY(float rad) {
mat4 yrot = mat4(
cos(rad), 0.0, sin(rad), 0.0,
0.0, 1.0, 0.0, 0.0,
-sin(rad), 0.0, cos(rad), 0.0,
0.0, 0.0, 0.0, 1.0
);
return yrot;
}
mat4 buildRotateZ(float rad) {
mat4 zrot = mat4(
cos(rad), -sin(rad), 0.0, 0.0,
sin(rad), cos(rad), 0.0, 0.0,
0.0, 0.0,1.0 , 0.0,
0.0, 0.0, 0.0, 1.0
);
return zrot;
}

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#include <Cubed/tools/log.hpp>
namespace LOG {
}

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#include <Cubed/tools/shader_tools.hpp>
#include <Cubed/tools/log.hpp>
void printShaderLog(GLuint shader) {
int len = 0;
int chWritten = 0;
char *log;
glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &len);
if (len > 0) {
log = (char*)malloc(len);
glGetShaderInfoLog(shader, len, &chWritten, log);
LOG::info("Shader Info Log: {}", log);
free(log);
}
}
void printProgramInfo(int prog) {
int len = 0;
int chWritten = 0;
char *log;
glGetProgramiv(prog, GL_INFO_LOG_LENGTH, &len);
if (len > 0) {
log = (char*)malloc(len);
glGetProgramInfoLog(prog, len, &chWritten, log);
LOG::info("Program Info Log: {}", log);
free(log);
}
}
bool checkOpenGLError() {
bool foundError = false;
int glErr = glGetError();
while (glErr != GL_NO_ERROR) {
LOG::error("glEorr: {}", glErr);
foundError = true;
glErr = glGetError();
}
return foundError;
}
std::string readShaderSource(const char* filePath) {
std::string content;
std::ifstream fileStream(filePath, std::ios::in);
if (!fileStream.is_open()) {
LOG::error("file not exist");
}
std::string line = "";
while (!fileStream.eof()) {
getline(fileStream, line);
content.append(line + "\n");
}
fileStream.close();
return content;
}
GLuint loadTexture(const char* texImagePath) {
GLuint textureID;
textureID = SOIL_load_OGL_texture(texImagePath, SOIL_LOAD_AUTO, SOIL_CREATE_NEW_ID, SOIL_FLAG_INVERT_Y);
if (textureID == 0) {
LOG::error("could not find texture file");
}
return textureID;
}

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third_party/glad/include/KHR/khrplatform.h vendored Normal file
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#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_ */

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