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0030102: Visualization, TKOpenGl - Graphic3d_TOSM_FACET shading is incorrect in some casesn

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gl_FrontFacing is now considered within Normal computation.
This commit is contained in:
mnv
2018-08-31 15:14:49 +03:00
committed by bugmaster
parent 93808a4a9c
commit 1ad3bc4c00
2 changed files with 14 additions and 0 deletions
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src/OpenGl/OpenGl_ShaderManager.cxx
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@@ -2192,6 +2192,7 @@ Standard_Boolean OpenGl_ShaderManager::prepareStdProgramPhong (Handle(OpenGl_Sha
+ aSrcFragExtraMain
+ (isFlatNormal
? EOL" Normal = normalize (cross (dFdx (Position.xyz / Position.w), dFdy (Position.xyz / Position.w)));"
EOL" if (!gl_FrontFacing) { Normal = -Normal; }"
: "")
+ EOL" occSetFragColor (getColor());"
+ aSrcFragWriteOit