Bump cubemap arrays RGB type back to 16F for improved HDR color precision during IBL

Author: RyeMutt

indra/llrender/llcubemaparray.cpp

@@ -156,7 +156,7 @@ void LLCubeMapArray::allocate(U32 resolution, U32 components, U32 count, bool us
     bind(0);
     free_cur_tex_image();
 
-    U32 format = components == 4 ? GL_RGBA16F : GL_R11F_G11F_B10F;
+    U32 format = components == 4 ? GL_RGBA16F : GL_RGB16F;
     if (!hdr)
     {
         format = components == 4 ? GL_RGBA8 : GL_RGB8;

indra/newview/llreflectionmapmanager.cpp

@@ -274,7 +274,7 @@ void LLReflectionMapManager::update()
 
     if (!mRenderTarget.isComplete())
     {
-        U32 color_fmt = render_hdr ? GL_R11F_G11F_B10F : GL_RGB8;
+        U32 color_fmt = render_hdr ? GL_RGB16F : GL_RGB8;
         U32 targetRes = mProbeResolution * 4; // super sample
         mRenderTarget.allocate(targetRes, targetRes, color_fmt, true);
     }
@@ -287,7 +287,7 @@ void LLReflectionMapManager::update()
         mMipChain.resize(count);
         for (U32 i = 0; i < count; ++i)
         {
-            mMipChain[i].allocate(res, res, render_hdr ? GL_R11F_G11F_B10F : GL_RGB8);
+            mMipChain[i].allocate(res, res, render_hdr ? GL_RGB16F : GL_RGB8);
             res /= 2;
         }
     }