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0031997: Visualization, TKOpenGl - phong shader compilation error with normal texture map enabled

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OpenGl_ShaderManager::defaultGlslVersion() now defines GLSL 120 for normal map texture.
This commit is contained in:
kgv 2020-12-15 00:37:49 +03:00 committed by bugmaster
parent fccc168a6f
commit 1e1158c78b
1 changed files with 8 additions and 0 deletions
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8
src/OpenGl/OpenGl_ShaderManager.cxx
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@ -1793,6 +1793,14 @@ int OpenGl_ShaderManager::defaultGlslVersion (const Handle(Graphic3d_ShaderProgr
}
else
{
const bool toUseMat2x3 = (theBits & OpenGl_PO_HasTextures) == OpenGl_PO_TextureNormal;
if (toUseMat2x3) // TangentSpaceNormal() function uses mat2x3 type
{
if (myContext->IsGlGreaterEqual (2, 1))
{
theProgram->SetHeader ("#version 120");
}
}
if ((theBits & OpenGl_PO_StippleLine) != 0
|| theProgram->IsPBR())
{