added texture class, changed shader extension names

Engine/Engine.vcxproj

@@ -166,17 +166,18 @@
   <ItemGroup>
     <Content Include="placeholders\awesomeface.png" />
     <Content Include="placeholders\wall.jpg" />
-    <Content Include="shaders\basicVertex.vs" />
+    <Content Include="shaders\basicVertex.vert" />
     <Content Include="vendor\glfw\glfw3.lib" />
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="engine\shader.h" />
+    <ClInclude Include="engine\texture.h" />
     <ClInclude Include="vendor\glad\glad.h" />
     <ClInclude Include="vendor\KHR\khrplatform.h" />
     <ClInclude Include="vendor\stb_image\stb_image.h" />
   </ItemGroup>
   <ItemGroup>
-    <Compile Include="shaders\basicFragment.fs" />
+    <Compile Include="shaders\basicFragment.frag" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">

Engine/engine/texture.h

@@ -0,0 +1,47 @@
+#pragma once
+
+#include <iostream>
+
+#include <glad/glad.h>
+#include <stb_image/stb_image.h>
+
+class Texture
+{
+public:
+	unsigned int ID;
+	int width, height, nrChannels;
+	
+	Texture(const char* texturePath, bool flip = false)
+	{
+		// Create the Texture and set our ID
+		glGenTextures(1, &ID);
+		glBindTexture(GL_TEXTURE_2D, ID);
+		
+		// set the texture wrapping/filtering options (on the currently bound texture object)
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);	
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+		
+		// Grab the texture from our path
+		if (flip)
+			stbi_set_flip_vertically_on_load(true);
+		
+		unsigned char *data = stbi_load(texturePath, &width, &height, &nrChannels, 0);
+		if (data)
+		{
+			GLenum format = (nrChannels == 4) ? GL_RGBA : GL_RGB;
+			glTexImage2D(GL_TEXTURE_2D, 0, format, width, height, 0, format, GL_UNSIGNED_BYTE, data);
+			glGenerateMipmap(GL_TEXTURE_2D);
+		}
+		else
+		{
+			std::cout << "Failed to load texture" << std::endl;
+		}
+		
+		if (flip)
+			stbi_set_flip_vertically_on_load(false);
+		
+		stbi_image_free(data);
+	}
+};

Engine/main.cpp

@@ -5,6 +5,7 @@
 #include <stb_image/stb_image.h>
 
 #include <shader.h>
+#include <texture.h>
 
 const int SCREEN_WIDTH = 800;
 const int SCREEN_HEIGHT = 600;
@@ -71,7 +72,7 @@ int main(int argc, char* argv[])
     glfwSetFramebufferSizeCallback(window, window_resize_callback);
     
     // Load Shader
-    Shader shaderTest("shaders/basicVertex.vs", "shaders/basicFragment.fs");
+    Shader shaderTest("shaders/basicVertex.vert", "shaders/basicFragment.frag");
     float vertices[] = {
         0.5f,  0.5f, 0.0f,   1.0f, 0.0f, 0.0f,   1.0f, 1.0f,   // top right
         0.5f, -0.5f, 0.0f,   0.0f, 1.0f, 0.0f,   1.0f, 0.0f,   // bottom right
@@ -112,56 +113,12 @@ int main(int argc, char* argv[])
     glEnableVertexAttribArray(2);
     
     
-    unsigned int texture1, texture2;
-    glGenTextures(1, &texture1);
-    glBindTexture(GL_TEXTURE_2D, texture1);
-    // set the texture wrapping/filtering options (on the currently bound texture object)
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);	
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-    // load and generate the texture
-    int width, height, nrChannels;
-    unsigned char *data = stbi_load("placeholders/wall.jpg", &width, &height, &nrChannels, 0);
-    if (data)
-    {
-        glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, data);
-        glGenerateMipmap(GL_TEXTURE_2D);
-    }
-    else
-    {
-        std::cout << "Failed to load texture" << std::endl;
-    }
-    stbi_image_free(data);
-    
-    // texture 2
-    // ---------
-    glGenTextures(1, &texture2);
-    glBindTexture(GL_TEXTURE_2D, texture2);
-    // set the texture wrapping parameters
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);	// set texture wrapping to GL_REPEAT (default wrapping method)
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
-    // set texture filtering parameters
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-    // load image, create texture and generate mipmaps
-    stbi_set_flip_vertically_on_load(true);  
-    data = stbi_load("placeholders/awesomeface.png", &width, &height, &nrChannels, 0);
-    if (data)
-    {
-        // note that the awesomeface.png has transparency and thus an alpha channel, so make sure to tell OpenGL the data type is of GL_RGBA
-        glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
-        glGenerateMipmap(GL_TEXTURE_2D);
-    }
-    else
-    {
-        std::cout << "Failed to load texture" << std::endl;
-    }
-    stbi_image_free(data);
+    Texture texture1("placeholders/wall.jpg");
+    Texture texture2("placeholders/awesomeface.png", true);
     
     shaderTest.Use(); // don't forget to activate/use the shader before setting uniforms!
-    shaderTest.setInt("ourTexture", 0);
-    shaderTest.setInt("decal", 1);
+    shaderTest.setInt("ourTexture", texture1.ID);
+    shaderTest.setInt("decal", texture2.ID);
     
     // Render Loop
     while (!glfwWindowShouldClose(window))
@@ -176,9 +133,9 @@ int main(int argc, char* argv[])
         shaderTest.Use();
         
         glActiveTexture(GL_TEXTURE0);
-        glBindTexture(GL_TEXTURE_2D, texture1);
+        glBindTexture(GL_TEXTURE_2D, texture1.ID);
         glActiveTexture(GL_TEXTURE1);
-        glBindTexture(GL_TEXTURE_2D, texture2);
+        glBindTexture(GL_TEXTURE_2D, texture2.ID);
         
         // Draw our triangle
         glBindVertexArray(VAO);