Half-Life 2: Episode One Sky List

From Valve Developer Community

This is a list of skies available in the Steam caches, along with pictures of each skybox. The light_environment settings listed (Ideal Sun Angle, Ideal Brightness, etc) are suggestions based on settings used in official maps; other values may also be appropriate. To test skies in singleplayer without recompiling the map, bring up the console and enter sv_skyname <sky_name>. Quicksave the game, load it again and the old skybox should be temporarily replaced with the new one.

These skyboxes are available to Half-Life 2: Episode One and mods utilizing its content. These skies are HDR capable.

Example Map	Ideal Sun Angle	Ideal Sun Pitch	Ideal Brightness	Ideal Ambience	Ideal HDR Brightness	Ideal HDR Ambience
sky_ep01_00
ep1_citadel_00	0 110 0	-9	237 228 209 400	75 73 114 100	237 228 209 350	237 228 209 80
sky_ep01_01
None
sky_ep01_02
ep1_c17_02a	0 295 0	-20	219 191 148 500	207 172 133 100	242 234 170 500	124 71 46 50
Example Map	Ideal Sun Angle	Ideal Sun Pitch	Ideal Brightness	Ideal Ambience	Ideal HDR Brightness	Ideal HDR Ambience
sky_ep01_04a
ep1_c17_01	0 310 0	-20	240 217 183 500	190 143 112 40	240 217 183 400	190 143 112 40
sky_ep01_04
ep1_c17_02 ep1_c17_02a ep1_c17_05 ep1_c17_06	0 295 0 0 295 0 0 295 0 0 295 0	-20 -20 -20 -20	240 217 183 500 240 217 183 500 240 217 183 500 219 191 148 500	190 143 112 40 190 143 112 40 190 143 112 40 207 172 133 60	240 217 183 400 240 217 183 400 240 217 183 400 219 191 148 500	190 143 112 40 190 143 112 40 190 143 112 40 207 172 133 60

Environment articles:
Skies and environment maps	Skybox (2D) • Skybox (3D) • HDR Skies • Skybox with Terragen • Skybox with Terragen - Advanced • List of skies
Terrain and displacement mapping	Displacements • Holes in displacements • Digital Elevation Models