feat: initial commit

src/shaders/simple.fs

@@ -0,0 +1,50 @@
+#version 410 core
+
+// Output color of the fragment (pixel)
+out vec4 FragColor;  // RGBA color for the fragment, where A is the alpha (opacity)
+
+in vec3 vertexPos;
+in vec3 vertexNormal;
+in vec2 TexCoords;
+
+uniform vec3 lightPos;
+uniform vec3 viewPos;
+
+// From Object Renderer
+
+uniform vec3 ambientColor;
+uniform vec3 diffuseColor;
+uniform vec3 specularColor;
+
+uniform float ambientStrength;
+uniform float specularStrength;
+
+uniform sampler2D diffuseTex;
+uniform bool useTexture;
+
+#define LIGHT_COLOR vec3(1.0, 1.0, 1.0)
+
+void main()
+{
+    // Lighting vectors
+    vec3 lightDir = normalize(lightPos - vertexPos);
+    vec3 norm = normalize(vertexNormal);
+    vec3 viewDir = normalize(viewPos - vertexPos);
+    vec3 reflectDir = reflect(-lightDir, norm);
+
+    // Phong components
+    float spec = pow(max(dot(viewDir, reflectDir), 0.0), 32);
+    vec3 specular = specularStrength * spec * specularColor; 
+
+    float diff = max(dot(norm, lightDir), 0.0);
+    vec3 diffuse = diff * diffuseColor;
+
+    vec3 ambient = ambientStrength * ambientColor;
+
+    vec3 texColor = (useTexture)
+        ? texture(diffuseTex, TexCoords).rgb
+        : diffuseColor;
+
+    vec3 result = (ambient + diffuse + specular) * texColor;
+    FragColor = vec4(result, 1.0);
+}