X-Git-Url: https://git.lukelau.me/?a=blobdiff_plain;f=billboardfrag.glsl;h=b4cfd511464569ea23c577cda41a5b261c7ba288;hb=fb589ed247f5441995b750bb5145239acab3ef09;hp=c2e480bf88a930278ffe6f472f8be86c02b1bddd;hpb=e4bfe561fba2c32bf5ecdbf6a96067676ab313a2;p=clouds.git

diff --git a/billboardfrag.glsl b/billboardfrag.glsl
index c2e480b..b4cfd51 100644
--- a/billboardfrag.glsl
+++ b/billboardfrag.glsl
@@ -13,7 +13,7 @@ void main() {
     return;
   }
   if (debug) {
-    FragColor = mix(vec4(1, 1, 1, 1), vec4(1, 0, 0, 1), debugVal);
+    FragColor = mix(vec4(1, 1, 1, 0), vec4(1, 0, 0, 1), debugVal);
     return;
   }
   // Cf = color from fragment, Ct = color from texture
@@ -25,7 +25,9 @@ void main() {
     // GL_MODULATE: C
     // C = Cf * Ct
     // A = Af * At
-		FragColor = color * f;
+    // the +0.06 is a hack to get lighter clouds!
+    // can be thought of as ambient light
+    FragColor = color * (f + 0.02);
   } else {
     // "That is, the colors in the frame buffer are multiplied by the
     // attenuation ratio of the billboard texture and then the colors in