added the readme

shaders/default.frag

@@ -0,0 +1,90 @@
+#version 330 core
+out vec4 FragColor;
+
+in vec3 normal;
+in vec2 texCoord;
+in vec3 FragPos;
+in vec4 fragposlightspace;
+
+struct Material {
+    vec3 ambient;
+    vec3 diffuse;
+    vec3 specular;    
+    float shininess;
+};
+
+struct PointLight {    
+    vec3 position;
+    
+    float constant;
+    float linear;
+    float quadratic;  
+
+    vec3 ambient;
+    vec3 diffuse;
+    vec3 specular;
+};  
+
+struct DirLight {
+    vec3 direction;
+  
+    vec3 ambient;
+    vec3 diffuse;
+    vec3 specular;
+};  
+
+uniform DirLight dirLight;
+
+uniform vec3 viewPos;
+
+uniform sampler2DShadow shadowMap;
+uniform sampler2D tex;
+
+float ShadowCalculation(vec4 fragposlightspace)
+{
+    // perform perspective divide
+    vec3 projCoords = fragposlightspace.xyz / fragposlightspace.w;
+    projCoords = projCoords * 0.5 + 0.5; 
+    if(projCoords.z > 1.0)
+        return 0.0;
+    float currentDepth = projCoords.z;  
+    float bias = 0.01;
+    float shadow = 0.0;
+    return texture(shadowMap, vec3(projCoords.xy,projCoords.z));
+}
+
+vec3 CalcDirLight(DirLight light, vec3 normal, vec3 viewDir)
+{
+    vec3 lightDir = normalize(-light.direction);
+    // diffuse shading
+    float diff = max(dot(normal, lightDir), 0.0);
+    // specular shading
+    vec3 reflectDir = reflect(-lightDir, normal);
+    float spec = pow(max(dot(viewDir, reflectDir), 0.0), 32.0f);
+    // combine results
+    vec3 ambient  = light.ambient;
+    vec3 diffuse  = light.diffuse  * diff;
+    vec3 specular = light.specular * spec; 
+    return ambient + (diffuse + specular) * (ShadowCalculation(fragposlightspace));
+}  
+
+void main()
+{
+
+    float gamma = 2.2;
+
+    vec4 lightless = texture(tex, texCoord);
+    lightless = texture(tex, texCoord);
+    if (lightless.a < 0.1) {
+        discard;
+    }
+
+    vec3 norm = normalize(normal);
+    vec3 viewDir = normalize(viewPos - FragPos);
+
+    vec4 pregamma = (lightless) * vec4(CalcDirLight(dirLight,norm,viewDir),1.0f) * vec4(vec3(1.0f-1.0f/gl_FragCoord[3]/ 200.0f), 1.0f);
+
+    FragColor = pregamma;
+
+    //FragColor = vec4(1.0f,1.0f,1.0f,1.0f);
+}