2 files changed, 30 insertions, 28 deletions
diff --git a/client/shaders/alpha_shader/opengl_fragment.glsl b/client/shaders/alpha_shader/opengl_fragment.glsl
index 3c0f35eae..6ed00be25 100644
--- a/client/shaders/alpha_shader/opengl_fragment.glsl
+++ b/client/shaders/alpha_shader/opengl_fragment.glsl
@@ -1,45 +1,44 @@
-#version 120
-
 uniform sampler2D baseTexture;
 uniform sampler2D normalTexture;
 uniform sampler2D useNormalmap;
 
-uniform float enableBumpmapping;
-uniform float enableParallaxOcclusion;
-uniform float parallaxOcclusionScale;
-uniform float parallaxOcclusionBias;
-
-
 uniform vec4 skyBgColor;
 uniform float fogDistance;
+uniform vec3 eyePosition;
 
 varying vec3 vPosition;
-varying vec3 tsEyeVec;
 varying vec3 eyeVec;
 
+#ifdef ENABLE_PARALLAX_OCCLUSION
+varying vec3 tsEyeVec;
+#endif
+
 const float e = 2.718281828459;
 
 void main (void)
 {
 	vec3 color;
 	vec2 uv = gl_TexCoord[0].st;
-	
-#ifdef NORMALS
+
+#ifdef USE_NORMALMAPS
+	float use_normalmap = texture2D(useNormalmap,vec2(1.0,1.0)).r;
+#endif
+
+#ifdef ENABLE_PARALLAX_OCCLUSION
 	float height;
 	vec2 tsEye = vec2(tsEyeVec.x,-tsEyeVec.y);
-	
-	float use_normalmap = texture2D(useNormalmap,vec2(1.0,1.0)).r;
-	float enable_bumpmapping = enableBumpmapping;
-	
-	if ((enableParallaxOcclusion == 1.0) && (use_normalmap > 0.0)) {
+
+	if (use_normalmap > 0.0) {
 		float map_height = texture2D(normalTexture, uv).a;
 			if (map_height < 1.0){
-				float height = parallaxOcclusionScale * map_height - parallaxOcclusionBias;
+				float height = PARALLAX_OCCLUSION_SCALE * map_height - PARALLAX_OCCLUSION_BIAS;
 				uv = uv + height * tsEye;
 			}
 	}
+#endif
 
-	if ((enable_bumpmapping == 1.0) && (use_normalmap > 0.0)) {
+#ifdef ENABLE_BUMPMAPPING
+	if (use_normalmap > 0.0) {
 		vec3 base = texture2D(baseTexture, uv).rgb;
 		vec3 vVec = normalize(eyeVec);
 		vec3 bump = normalize(texture2D(normalTexture, uv).xyz * 2.0 - 1.0);
@@ -68,5 +67,5 @@ void main (void)
 		float d = max(0.0, min(vPosition.z / fogDistance * 1.5 - 0.6, 1.0));
 		col = mix(col, skyBgColor, d);
 	}
-    gl_FragColor = vec4(col.r, col.g, col.b, alpha);   
+    gl_FragColor = vec4(col.r, col.g, col.b, alpha);
 }
diff --git a/client/shaders/alpha_shader/opengl_vertex.glsl b/client/shaders/alpha_shader/opengl_vertex.glsl
index c26fdd3d5..e359955d0 100644
--- a/client/shaders/alpha_shader/opengl_vertex.glsl
+++ b/client/shaders/alpha_shader/opengl_vertex.glsl
@@ -1,5 +1,3 @@
-#version 120
-
 uniform mat4 mWorldViewProj;
 uniform mat4 mInvWorld;
 uniform mat4 mTransWorld;
@@ -9,14 +7,19 @@ uniform vec3 eyePosition;
 
 varying vec3 vPosition;
 varying vec3 eyeVec;
+
+#ifdef ENABLE_PARALLAX_OCCLUSION
 varying vec3 tsEyeVec;
+#endif
 
 void main(void)
 {
 	gl_Position = mWorldViewProj * gl_Vertex;
 	vPosition = (mWorldViewProj * gl_Vertex).xyz;
+	eyeVec = (gl_ModelViewMatrix * gl_Vertex).xyz;
 
-	vec3 normal,tangent,binormal; 
+#ifdef ENABLE_PARALLAX_OCCLUSION
+	vec3 normal,tangent,binormal;
 	normal = normalize(gl_NormalMatrix * gl_Normal);
 
 	if (gl_Normal.x > 0.5) {
@@ -44,14 +47,14 @@ void main(void)
 		tangent  = normalize(gl_NormalMatrix * vec3(-1.0,  0.0,  0.0));
 		binormal = normalize(gl_NormalMatrix * vec3( 0.0, -1.0,  0.0));
 	}
-	
-	mat3 tbnMatrix = mat3(tangent.x, binormal.x, normal.x,
-                          tangent.y, binormal.y, normal.y,
-                          tangent.z, binormal.z, normal.z);
 
-	eyeVec = (gl_ModelViewMatrix * gl_Vertex).xyz;
+	mat3 tbnMatrix = mat3(	tangent.x, binormal.x, normal.x,
+							tangent.y, binormal.y, normal.y,
+							tangent.z, binormal.z, normal.z);
+
 	tsEyeVec = normalize(eyeVec * tbnMatrix);
-	
+#endif
+
 	vec4 color;
 	//color = vec4(1.0, 1.0, 1.0, 1.0);