GameObjects

Began to add GameObjects, starting with the player.

wall.frag

@@ -0,0 +1,71 @@
+#version 330 core
+out vec4 FragColor;
+
+uniform vec3 lightColor;
+uniform vec3 lightPos;
+uniform vec3 viewPos;
+
+uniform sampler2D diffuseTexture;
+uniform samplerCube depthMap;
+
+uniform float far_plane;
+uniform bool shadows;
+
+uniform vec3      iResolution;           // viewport resolution (in pixels)
+uniform float     iTime;                 // shader playback time (in seconds)
+uniform float     iTimeDelta;            // render time (in seconds)
+uniform float     iFrameRate;            // shader frame rate
+uniform int       iFrame;                // shader playback frame
+uniform float     iChannelTime[4];       // channel playback time (in seconds)
+uniform vec3      iChannelResolution[4]; // channel resolution (in pixels)
+uniform vec4      iMouse;                // mouse pixel coords. xy: current (if MLB down), zw: click
+uniform sampler2D iChannel0;		     // input channel. XX = 2D/Cube
+uniform vec4      iDate;                 // (year, month, day, time in seconds)
+
+in vec3 FragPos;
+in vec3 Normal;
+in vec3 Color;
+
+float ShadowCalculation(vec3 fragPos)
+{
+    // get vector between fragment position and light position
+    vec3 fragToLight = fragPos - lightPos;
+    // ise the fragment to light vector to sample from the depth map    
+    float closestDepth = texture(depthMap, fragToLight).r;
+    // it is currently in linear range between [0,1], let's re-transform it back to original depth value
+    closestDepth *= far_plane;
+    // now get current linear depth as the length between the fragment and light position
+    float currentDepth = length(fragToLight);
+    // test for shadows
+    float bias = 0.05; // we use a much larger bias since depth is now in [near_plane, far_plane] range
+    float shadow = currentDepth -  bias > closestDepth ? 1.0 : 0.0;        
+    // display closestDepth as debug (to visualize depth cubemap)
+    //FragColor = vec4(vec3(closestDepth / far_plane), 1.0);
+        
+    return shadow;
+}
+
+void main()
+{           
+    //vec3 color = texture(diffuseTexture, FragPos.xy).rgb;
+    vec3 normal = normalize(Normal);
+    vec3 lightColor = vec3(0.3);
+    // ambient
+    vec3 ambient = 0.3 * lightColor;
+    // diffuse
+    vec3 lightDir = normalize(lightPos - FragPos);
+    float diff = max(dot(lightDir, normal), 0.0);
+    vec3 diffuse = diff * lightColor;
+    // specular
+    vec3 viewDir = normalize(viewPos - FragPos);
+    vec3 reflectDir = reflect(-lightDir, normal);
+    float spec = 0.0;
+    vec3 halfwayDir = normalize(lightDir + viewDir);  
+    spec = pow(max(dot(normal, halfwayDir), 0.0), 64.0);
+    vec3 specular = spec * lightColor;    
+    // calculate shadow
+    float shadow = ShadowCalculation(FragPos);                     
+    vec3 lighting = (ambient + (1.0 - shadow) * (diffuse + specular)) * Color;    
+    
+    FragColor = vec4(lighting, 1.0);
+}