First!

shaders/glsl/AmbientGlow.fp

@@ -0,0 +1,12 @@
+// imitation of the Unreal Engine 1.x ambient glow effect, timing may be off
+#define PI 3.14159265
+vec4 ProcessLight( vec4 color )
+{
+	float glow = (1.0+sin(timer*2*PI))*0.25;
+	return vec4(min(color.rgb+vec3(glow),1.0),color.a);
+}
+
+vec4 ProcessTexel()
+{
+	return getTexel(vTexCoord.st);
+}

shaders/glsl/AmbientGlow_Brightmapped.fp

@@ -0,0 +1,15 @@
+// imitation of the Unreal Engine 1.x ambient glow effect, timing may be off
+// combining with brightmaps requires the brightmap to be embedded into the
+// alpha channel of the diffuse texture
+#define PI 3.14159265
+vec4 ProcessLight( vec4 color )
+{
+	float bright = getTexel(vTexCoord.st).a;
+	float glow = (1.0+sin(timer*2*PI))*0.25;
+	return vec4(min(color.rgb+vec3(bright)+vec3(glow),1.0),color.a);
+}
+
+vec4 ProcessTexel()
+{
+	return vec4(getTexel(vTexCoord.st).rgb,1.0);
+}

shaders/glsl/MeshEnviroMap.fp

@@ -0,0 +1,7 @@
+// imitation of the Unreal Engine 1.x bMeshEnviroMap effect, not 1:1 but gets close
+vec4 ProcessTexel()
+{
+	vec3 eyedir = normalize(uCameraPos.xyz-pixelpos.xyz);
+	vec3 norm = reflect(eyedir,normalize(vWorldNormal.xyz));
+	return getTexel(norm.xz*0.5);
+}

shaders/glsl/MeshEnviroMap_AmbientGlow.fp

@@ -0,0 +1,15 @@
+// imitation of the Unreal Engine 1.x ambient glow effect, timing may be off
+#define PI 3.14159265
+vec4 ProcessLight( vec4 color )
+{
+	float glow = (1.0+sin(timer*4*PI))*0.25;
+	return vec4(min(color.rgb+vec3(glow),1.0),color.a);
+}
+
+// imitation of the Unreal Engine 1.x bMeshEnviroMap effect, not 1:1 but gets close
+vec4 ProcessTexel()
+{
+	vec3 eyedir = normalize(uCameraPos.xyz-pixelpos.xyz);
+	vec3 norm = reflect(eyedir,normalize(vWorldNormal.xyz));
+	return getTexel(norm.xz*0.5);
+}