KTX Texture compression fixed for opaque textures without an alpha channel.

KTX Texture mipmaps now loading correctly.

--HG--
branch : nfb

KREngine/kraken_standard_assets_osx/Shaders/ObjectShader_osx.fsh

@@ -25,11 +25,11 @@
 //  or implied, of Kearwood Gilbert.
 //
 
-// #extension GL_EXT_shadow_samplers : require
+//#extension GL_EXT_shadow_samplers : require
 
 #if ENABLE_RIM_COLOR == 1
-uniform lowp vec3 rim_color;
-uniform mediump float rim_power;
+    uniform lowp vec3 rim_color;
+    uniform mediump float rim_power;
 #endif
 
 #if FOG_TYPE > 0
@@ -116,18 +116,27 @@ uniform mediump float rim_power;
         uniform sampler2D 		reflectionTexture;
     #endif
 
+    #if ENABLE_RIM_COLOR == 1
+        #define NEED_EYEVEC
+    #endif
+
     #if HAS_REFLECTION_CUBE_MAP == 1
         uniform lowp vec3       material_reflection;
         uniform samplerCube     reflectionCubeTexture;
         #if HAS_NORMAL_MAP == 1
             varying highp mat3 tangent_to_world_matrix;
-            varying mediump vec3 eyeVec;
+            #define NEED_EYEVEC
+
             uniform highp mat4 model_matrix;
         #else
             varying mediump vec3 reflectionVec;
         #endif
     #endif
 
+    #ifdef NEED_EYEVEC
+        varying mediump vec3 eyeVec;
+    #endif
+
 
     #if SHADOW_QUALITY >= 1
         #ifdef GL_EXT_shadow_samplers
@@ -398,4 +407,14 @@ void main()
     
 
     #endif
+    
+    #if ENABLE_RIM_COLOR == 1
+        lowp float rim = 1.0 - clamp(dot(normalize(eyeVec), normal), 0.0, 1.0);
+        
+        gl_FragColor += vec4(rim_color, 1.0) * pow(rim, rim_power);
+    #endif
+    
+    #if BONE_COUNT > 0
+        gl_FragColor.b = 1.0;
+    #endif
 }