Created a basic shader object and window object

Using GLAD to load OpenGL/Vulkan extensions

MyGraphicsEngine/Shader.cpp

@@ -0,0 +1,94 @@
+#include "MyGraphicsEngine/Shader.h"
+
+Shader::Shader(const std::string vertexShaderPath, const std::string fragmentShaderPath)
+{
+    char infoLog[512];
+    int succes;
+    
+    char* vertexCode = readFile(vertexShaderPath.c_str());
+    unsigned int vertId = glCreateShader(GL_VERTEX_SHADER);
+    
+    spdlog::info(vertexCode);
+
+    glShaderSource(vertId, 1, &vertexCode, NULL);
+    glCompileShader(vertId);
+
+    glGetShaderiv(vertId, GL_COMPILE_STATUS, &succes);
+    if(!succes){
+        glGetShaderInfoLog(vertId, 512, NULL, infoLog);
+        spdlog::error( "Vertex shader has compile error {}", infoLog);
+        return;
+    }
+
+
+    char* fragmentCode = readFile(fragmentShaderPath.c_str());
+
+    unsigned int fragId = glCreateShader(GL_FRAGMENT_SHADER);
+
+
+    
+    glShaderSource(fragId, 1, &fragmentCode, NULL);
+    glCompileShader(fragId);
+
+    
+    glGetShaderiv(fragId, GL_COMPILE_STATUS, &succes);
+    if(!succes){
+        glGetShaderInfoLog(fragId, 512, NULL, infoLog);
+        spdlog::error("Fragment shader has compile error {}", infoLog);
+        return;
+    }
+
+
+
+    delete[] vertexCode;
+    delete[] fragmentCode;
+
+
+}
+char* Shader::readFile (const char* filePath){
+ spdlog::info("try Open file {}", filePath);
+    std::ifstream file ;
+    file.open(filePath);
+
+    if(file.is_open() == false){
+        spdlog::info("File not found.");
+         return nullptr;
+    }
+
+
+    // Determine the file size!
+    file.seekg(0, std::ios::end);
+    size_t filesize = file.tellg();
+
+    // Undo previous seek.
+    file.seekg(0, std::ios::beg);
+    spdlog::info("filesize: {}", filesize);
+
+
+    // Create a big enough buffer for the file
+
+    //calculate buffer size to prevent memory issues
+    size_t ChunksInBuffer =  filesize / Shader::CHUNK_SIZE;
+    size_t bufferSize = (ChunksInBuffer + 1) * Shader::CHUNK_SIZE;
+
+
+    char* FileBuffer = new char[bufferSize];
+ 
+    memset(FileBuffer, '\0', bufferSize);
+    size_t bytesRead= 0;
+
+    // read the whole file
+    while( file.eof() == false){
+        file.read(FileBuffer + bytesRead, CHUNK_SIZE );
+        bytesRead += CHUNK_SIZE;
+    }
+
+    FileBuffer[filesize + 1] = '\0';
+
+    return FileBuffer;
+}
+
+void Shader::Use()
+{
+  //  glUseProgam(id);
+}

MyGraphicsEngine/include/MyGraphicsEngine/Camera.h

@@ -0,0 +1,13 @@
+#pragma once
+#include <glm/glm.hpp>
+
+struct Camera {
+  glm::vec3 Position;
+  glm::mat4 ViewMat;
+  float Zoom;
+private:
+  glm::vec3 Front;  
+  glm::vec3 Right;
+  glm::vec3 Up;
+
+};

MyGraphicsEngine/include/MyGraphicsEngine/Graphics.h

@@ -1,9 +0,0 @@
-#pragma once
-#include <spdlog/spdlog.h>
-#include "MyGraphicsEngine/window.h"
-
-
-inline void test (){
-    spdlog::info("Linked correctly!");
-    
-}

MyGraphicsEngine/include/MyGraphicsEngine/Shader.h

@@ -0,0 +1,18 @@
+#pragma once
+#include <glad/glad.h>
+#include <string>
+#include <iostream>
+#include <fstream>
+#include <spdlog/spdlog.h>
+
+
+class Shader {
+    private:
+        int id;
+        const size_t  CHUNK_SIZE = 10;
+        char* readFile (const char* filePath);
+    public:
+        Shader(const std::string vertexShaderPath, const std::string fragmentShaderPath);
+        void Use();
+
+};

MyGraphicsEngine/shaders/vertex.shader

@@ -1,7 +1,6 @@
 #version 330 core
-layout (location = 0) in vec3 aPos;
+layout in vec3 aPos;
 
-void main()
-{
+void main() {
     gl_Position = vec4(aPos.x, aPos.y, aPos.z, 1.0);
 }

MyGraphicsEngine/window.cpp

@@ -1,8 +1,10 @@
-#include "MyGraphicsEngine/window.h"
-
+#include "MyGraphicsEngine/Window.h"
+#include <spdlog/spdlog.h>
 
 bool BarinkWindow::InitGLFW(){
-	if(!glfwInit()){
+	if(!glfwInit())
+	{
+		spdlog::error("Failed to initialise GLFW!");
 		return false;
 	}
 	return true;
@@ -14,7 +16,9 @@ Width(width), Height(height), FullScreen(false){
 
 	window = glfwCreateWindow(Width, Height, "BarinkEngine", NULL, NULL);
 
-	if( !window){
+	if( !window)
+	{
+		spdlog::error("GLFW failed to create window!");
 		glfwTerminate();
 		return;
 	}

SandboxApplication/Sandbox.cpp

@@ -1,11 +1,23 @@
-#include <MyGraphicsEngine/Graphics.h>
+#include <glad/glad.h>
+#include <MyGraphicsEngine/Shader.h>
+#include <MyGraphicsEngine/Window.h>
+#include <string>
 
 int main (int argc, char *argv[] ){
 
-    test();
 
     BarinkWindow GameWindow(800, 600);
 
+    
+    if (!gladLoadGLLoader((GLADloadproc)glfwGetProcAddress)){
+        printf("Failed to initialize GLAD!\n");
+        return -1;
+    }
+    std::string vertexShaderSource = "build/SandboxApplication/Debug/test.vs";
+    std::string fragmentShaderSource = "build/SandboxApplication/Debug/test.fs";
+    Shader(vertexShaderSource, fragmentShaderSource);
+
+
     GameWindow.EnterLoop();
 }
 

TODO.md

@@ -3,9 +3,9 @@
 **NOTE:** __Fairly detailed planning__
 
 
-<input type="checkbox"></input> Setup build system  \
-<input type="checkbox"></input> Link with GLFW  \
-<input type="checkbox"></input> Basic Window  \
+<input type="checkbox" checked></input> Setup build system  \
+<input type="checkbox" checked></input> Link with GLFW  \
+<input type="checkbox" checked></input> Basic Window  \
 <input type="checkbox"></input> Basic Triangle rendering  \
 <input type="checkbox"></input> Basic Textures  \
 <input type="checkbox"></input> Link GLEW \
@@ -15,3 +15,7 @@
 <input type="checkbox"></input> Load FBX model files  \
 <input type="checkbox"></input> Basic Physics  \
 <input type="checkbox"></input> To far in the future 
+
+
+## Resources 
+https://renderdoc.org/

premake5.lua

@@ -12,6 +12,7 @@ workspace "BarinkEngine"
 		buildmessage "Building BarinkEngineSandbox ..."
 
 		includedirs {
+			"./libs/glad/include",
 			"./MyGraphicsEngine/include"
 		}
 
@@ -19,6 +20,7 @@ workspace "BarinkEngine"
 
 		libdirs{
 			"./libs/spdlog-1.9.1/build"
+			
 		}	
 
 		links{
@@ -37,8 +39,12 @@ workspace "BarinkEngine"
 			"SandboxApplication/*.cpp"
 		}
 
+		-- NOTE: make these copy instructions more flexible
+		ok, err = os.copyfile("MyGraphicsEngine/shaders/fragment.shader", "build/SandboxApplication/Debug/test.fs")
+		if err then error("Copy fragment shader source failed!") end
 
-
+		ok, err = os.copyfile("MyGraphicsEngine/shaders/vertex.shader", "build/SandboxApplication/Debug/test.vs")
+		if err then error("Copy vertex shader source failed!") end
 
 	project "MyGraphicsEngine"
 		kind "StaticLib"
@@ -46,8 +52,11 @@ workspace "BarinkEngine"
 		buildmessage "Building MyGraphicsEngine ..."
 		
 		includedirs {
+			"./libs/glad/include",
 			"./libs/glfw-3.3.4/include",
+			"./libs/glew-2.2.0/include",
 			"./libs/spdlog-1.9.1/include",
+			"./libs/glm/glm",
 			"./MyGraphicsEngine/include"
 			}
 		
@@ -67,7 +76,11 @@ workspace "BarinkEngine"
 			"m"
 		}
 
-		files {"MyGraphicsEngine/*.cpp"}
+		files {
+			"./libs/glad/src/glad.c",
+			"MyGraphicsEngine/*.cpp"
+		
+		}
 
 		filter "configurations:Debug"
 			defines {"DEBUG"}