Fix a problem where the cloud layers suddenly change color when looking towards the sun

diff --git a/simgear/scene/sky/cloud.cxx b/simgear/scene/sky/cloud.cxx
index 720e53cddca449f7257929e784ca0a2bd85a6a03..8fda63941149fa590f6d5e3893b67fc6f63d4146 100644 (file)
--- a/simgear/scene/sky/cloud.cxx
+++ b/simgear/scene/sky/cloud.cxx
@@ -468,10 +468,10 @@ ssgSimpleState *sgCloudMakeState( const string &path ) {
     state->enable( GL_TEXTURE_2D );
     state->enable( GL_COLOR_MATERIAL );
     state->setColourMaterial( GL_AMBIENT_AND_DIFFUSE );
-    state->setMaterial( GL_EMISSION, 0.05, 0.05, 0.05, 1.0 );
-    state->setMaterial( GL_AMBIENT, 0.2, 0.2, 0.2, 1.0 );
-    state->setMaterial( GL_DIFFUSE, 0.5, 0.5, 0.5, 1.0 );
-    state->setMaterial( GL_SPECULAR, 1.0, 1.0, 1.0, 1.0 );
+    state->setMaterial( GL_EMISSION, 0.05, 0.05, 0.05, 0.0 );
+    state->setMaterial( GL_AMBIENT, 0.2, 0.2, 0.2, 0.0 );
+    state->setMaterial( GL_DIFFUSE, 0.5, 0.5, 0.5, 0.0 );
+    state->setMaterial( GL_SPECULAR, 0.0, 0.0, 0.0, 0.0 );
     state->enable( GL_BLEND );
     state->enable( GL_ALPHA_TEST );
     state->setAlphaClamp( 0.01 );