Added a default Color, Specular, Emit material to default pak

Author: ivansafrin

Assets/Default asset pack/default.pak

@@ -0,0 +1,129 @@
+varying vec3 normal;
+varying vec4 pos;
+varying vec4 vertexColor;
+
+uniform sampler2D diffuse;
+uniform sampler2D specular_map;
+uniform sampler2D emit_map;
+
+uniform vec4 diffuse_color;
+uniform vec4 specular_color;
+uniform vec4 ambient_color;
+uniform float shininess;
+
+float calculateAttenuation(in int i, in float dist)
+{
+    return(1.0 / (gl_LightSource[i].constantAttenuation +
+                  gl_LightSource[i].linearAttenuation * dist +
+                  gl_LightSource[i].quadraticAttenuation * dist * dist));
+}
+
+void pointLight(in int i, in vec3 normal, in vec4 pos, inout vec4 diffuse, inout vec4 specular) {
+	vec4 color = diffuse_color;
+	vec4 matspec = specular_color;
+	float shininess = shininess;
+	vec4 lightspec = gl_LightSource[i].specular;
+	vec4 lpos = gl_LightSource[i].position;
+	vec4 s = pos-lpos; 
+	vec4 sn = -normalize(s);
+	
+	vec3 light = sn.xyz;
+	vec3 n = normalize(normal);
+	vec3 r = -reflect(light, n);
+	r = normalize(r);
+	vec3 v = -pos.xyz;
+	v = normalize(v);
+
+	float nDotL = dot(n, sn.xyz);
+	if(nDotL > 0.0) {
+		float dist = length(s);    
+		float attenuation = calculateAttenuation(i, dist);
+
+		diffuse  += color * max(0.0, nDotL) * gl_LightSource[i].diffuse * attenuation;
+
+	  if (shininess != 0.0) {
+    	specular += lightspec * matspec * pow(max(0.0,dot(r, v)), shininess) * attenuation;
+	  }
+	}
+}
+
+
+void spotLight(in int i, in vec3 normal, in vec4 pos, inout vec4 diffuse, inout vec4 specular) {
+	vec4 color = diffuse_color;
+	vec4 matspec = specular_color;
+	float shininess = shininess;
+	vec4 lightspec = gl_LightSource[i].specular;
+	vec4 lpos = gl_LightSource[i].position;
+	vec4 s = pos-lpos; 
+	vec4 sn = -normalize(s);
+
+	vec3 light = sn.xyz;
+	vec3 n = normalize(normal);
+	vec3 r = -reflect(light, n);
+	r = normalize(r);
+	vec3 v = -pos.xyz;
+	v = normalize(v);
+
+	float cos_outer_cone_angle = (1.0-gl_LightSource[i].spotExponent) * gl_LightSource[i].spotCosCutoff;
+	float cos_cur_angle = dot(-normalize(gl_LightSource[i].spotDirection), sn.xyz);
+	float cos_inner_cone_angle = gl_LightSource[i].spotCosCutoff;
+
+	float cos_inner_minus_outer_angle = cos_inner_cone_angle - cos_outer_cone_angle;
+	float spot = 0.0;
+	spot = clamp((cos_cur_angle - cos_outer_cone_angle) / cos_inner_minus_outer_angle, 0.0, 1.0);
+	       
+	float nDotL = dot(n, sn.xyz);
+	if(nDotL > 0.0) {
+		float dist = length(s);    
+		float attenuation = calculateAttenuation(i, dist);
+		diffuse  += color * max(0.0, nDotL) * gl_LightSource[i].diffuse * attenuation * spot;
+
+	  if (shininess != 0.0) {
+    	specular += lightspec * matspec * pow(max(0.0,dot(r, v)), shininess) * attenuation * spot;
+	  }
+	}
+}
+
+void doLights(in int numLights, in vec3 normal, in vec4 pos, inout vec4 diffuse, inout vec4 specular) {
+	for (int i = 0; i < numLights; i++) {
+		if (gl_LightSource[i].spotCutoff == 180.0) {
+			pointLight(i, normal, pos, diffuse, specular);
+		} else {
+			spotLight(i, normal, pos, diffuse, specular);
+		}
+    }
+}
+
+
+void main()
+{
+	vec4 diffuse_val  = vec4(0.0);
+	vec4 specular_val = vec4(0.0);
+	doLights(6, normal, pos, diffuse_val, specular_val);
+	
+	specular_val.xyz *= texture2D(specular_map, gl_TexCoord[0].st).xyz * gl_FrontMaterial.specular.a;
+
+	vec4 emitVal = texture2D(emit_map, gl_TexCoord[0].st);
+	vec4 texColor = texture2D(diffuse, gl_TexCoord[0].st);		
+		
+    vec4 color = diffuse_val + ambient_color; 	           
+    color = clamp((color*vertexColor*texColor) + specular_val, 0.0, 1.0);  
+
+    // fog
+	const float LOG2 = 1.442695;
+	float z = gl_FragCoord.z / gl_FragCoord.w;
+	float fogFactor = exp2( -gl_Fog.density * 
+				   gl_Fog.density * 
+				   z * 
+				   z * 
+				   LOG2 );
+
+	fogFactor = clamp(fogFactor, 0.0, 1.0);
+
+	color = mix(color, texColor, emitVal);
+
+	color = mix(gl_Fog.color, color, fogFactor );   
+	color.a = vertexColor.a * texColor.a * diffuse_color.a;	
+	gl_FragColor = color;
+
+}

Assets/Default asset pack/default/ColSpecEmit.frag

@@ -7,6 +7,7 @@ varying vec4 vertexColor;
 uniform sampler2D diffuse;
 uniform sampler2D normal_map;
 uniform sampler2D specular_map;
+uniform sampler2D emit_map;
 
 uniform vec4 diffuse_color;
 uniform vec4 specular_color;

Assets/Default asset pack/default/NorColSpec.frag

@@ -4,7 +4,11 @@
 		<shader type="glsl" name="DefaultShader" numPointLights="6" numSpotLights="2">		
 			<vp source="default/DefaultShader.vert"/>
 			<fp source="default/DefaultShader.frag"/>
-		</shader>	
+		</shader>
+		<shader type="glsl" name="ColSpecEmit" numPointLights="6" numSpotLights="2">		
+			<vp source="default/DefaultShader.vert"/>
+			<fp source="default/ColSpecEmit.frag"/>
+		</shader>			
 		<shader type="glsl" name="DefaultShaderNoTexture" numPointLights="6" numSpotLights="2">	
 			<vp source="default/DefaultShader.vert"/>
 			<fp source="default/DefaultShaderNoTexture.frag"/>
@@ -73,6 +77,12 @@
 				</textures>				
 			</shader>
 		</material>
+		<material name="ColSpecEmit">
+			<shader name="ColSpecEmit">
+				<textures>
+				</textures>				
+			</shader>
+		</material>
 		<material name="DefaultTexturedAdditive" blendingMode="2">
 			<shader name="DefaultShader">
 				<textures>