Computer Graphics Programming I - FreeDesktop.Org

More documents

Recommendations

Info

Fog Typical fog...as objects get farther away fromthe camera, they become more fog colored.● Eventually objects completely fade to fog color● Controlled by a fog weight on the range [0, 1]● Applied after texturing and after separate specular• Enabled with GL_FOG. Can be used for other related effects:● In dark environments, distant objects are darker● Underwater objects fade to the water color• Notice that the only difference is the color of the fog!20-November-2007 © Copyright Ian D. Romanick 2007
Fog Parameters Fog has 4 main parameters:● GL_FOG_START: Distance to fog start● GL_FOG_END: Distance to maximum fog density• These parameters only apply to GL_LINEAR fog● GL_FOG_DENSITY: Density (surprise!) of the fog• This parameter only applies to GL_EXP and GL_EXP2 fog● GL_FOG_COLOR All parameters set via glFog{if}[v]20-November-2007 © Copyright Ian D. Romanick 2007
Page 1: Computer Graphics Programming I Age
Page 6 and 7: Heightbased Fog Fog factor is giv
Page 8 and 9: Heightbased Fog (cont.) Store a l
Page 10 and 11: Radial Fog GL_FRAGMENT_DEPTH based
Page 12 and 13: Blending Typically used for one of
Page 14 and 15: GL_EXT_blend_colorC srcF src C dst
Page 16 and 17: Blend Equation C dstC src× ×F src
Page 18 and 19: Referenceshttp://en.wikipedia.org/w
Page 20 and 21: Multipass Rendering Please...no 5
Page 22 and 23: Problems with Multipass Why do we
Page 24 and 25: Problems with Multipass Why do we
Page 26 and 27: Referenceshttp://www.bluesnews.com/
Page 28: Legal Statement This work represent

Computer Graphics Programming I - FreeDesktop.Org

Create successful ePaper yourself

Delete template?

Save as template?