Actually fix the banding. Oopsie!

Author: RyeMutt

indra/newview/pipeline.cpp

@@ -900,13 +900,13 @@ bool LLPipeline::allocateScreenBufferInternal(U32 resX, U32 resY)
 
     GLuint screenFormat = hdr ? GL_RGBA16F : GL_RGBA;
 
-    if (!mRT->screen.allocate(resX, resY, screenFormat)) return false;
+    if (!mRT->screen.allocate(resX, resY, GL_RGBA16F)) return false;
 
     mRT->deferredScreen.shareDepthBuffer(mRT->screen);
 
     if (hdr || shadow_detail > 0 || ssao || RenderDepthOfField || RlvActions::hasPostProcess())
     { //only need mRT->deferredLight for hdr OR shadows OR ssao OR dof
-        if (!mRT->deferredLight.allocate(resX, resY, GL_RGBA16F)) return false;
+        if (!mRT->deferredLight.allocate(resX, resY, screenFormat)) return false;
     }
     else
     {