Bug in OpenClonk

LandscapeShader.glsl.diff

diff --git a/planet/Graphics.ocg/LandscapeShader.glsl b/planet/Graphics.ocg/LandscapeShader.glsl
index fd26967..45bc358 100644
--- a/planet/Graphics.ocg/LandscapeShader.glsl
+++ b/planet/Graphics.ocg/LandscapeShader.glsl
@@ -100,6 +100,8 @@ slice(texture+4)
 
 slice(material)
 {
+	float fix1 = 0.5;
+	float fix2 = 0.5;
 
 	// Get material properties from material map
 	int matMapIx = f2i(landscapePx.r);
@@ -111,8 +113,8 @@ slice(material)
 	float matAngle = matMapX.a;
 
 	// Query material texture pixels
-	vec4 materialPx = texture(materialTex, vec3(materialCoo, materialIx));
-	vec4 normalPx = texture(materialTex, vec3(materialCoo, materialIx+0.5 * materialDepth));
+	vec4 materialPx = texture(materialTex, vec3(materialCoo, materialIx + fix1));
+	vec4 normalPx = texture(materialTex, vec3(materialCoo, materialIx+0.5 * materialDepth + fix1));
 	// Same for second pixel
 	int matMapIx2 = f2i(landscapePx2.r);
 	vec4 matMap2 = queryMatMap(2*matMapIx2);
@@ -123,8 +125,8 @@ slice(material)
 	float matAngle2 = matMapX2.a;
 
 	// Query material texture pixels
-	vec4 materialPx2 = texture(materialTex, vec3(materialCoo, materialIx2));
-	vec4 normalPx2 = texture(materialTex, vec3(materialCoo, materialIx2+0.5 * materialDepth));
+	vec4 materialPx2 = texture(materialTex, vec3(materialCoo, materialIx2 + fix2));
+	vec4 normalPx2 = texture(materialTex, vec3(materialCoo, materialIx2+0.5 * materialDepth + fix2));
 }
 
 slice(normal)