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0029517: Visualization - introduce AlphaMode property defining alpha value handling options

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This commit is contained in:
kgv
2018-02-20 16:32:52 +03:00
committed by bugmaster
parent ff6d145402
commit c40eb6b950
29 changed files with 371 additions and 63 deletions
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7
src/OpenGl/OpenGl_ShaderProgram.cxx
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@@ -67,6 +67,7 @@ Standard_CString OpenGl_ShaderProgram::PredefinedKeywords[] =
"occDistinguishingMode", // OpenGl_OCCT_DISTINGUISH_MODE
"occFrontMaterial", // OpenGl_OCCT_FRONT_MATERIAL
"occBackMaterial", // OpenGl_OCCT_BACK_MATERIAL
"occAlphaCutoff", // OpenGl_OCCT_ALPHA_CUTOFF
"occColor", // OpenGl_OCCT_COLOR
"occOitOutput", // OpenGl_OCCT_OIT_OUTPUT
@@ -152,6 +153,7 @@ OpenGl_ShaderProgram::OpenGl_ShaderProgram (const Handle(Graphic3d_ShaderProgram
myNbLightsMax (0),
myNbClipPlanesMax (0),
myNbFragOutputs (1),
myHasAlphaTest (false),
myHasWeightOitOutput (false),
myHasTessShader (false)
{
@@ -183,6 +185,7 @@ Standard_Boolean OpenGl_ShaderProgram::Initialize (const Handle(OpenGl_Context)&
}
myHasTessShader = (aShaderMask & (Graphic3d_TOS_TESS_CONTROL | Graphic3d_TOS_TESS_EVALUATION)) != 0;
myNbFragOutputs = !myProxy.IsNull() ? myProxy->NbFragmentOutputs() : 1;
myHasAlphaTest = !myProxy.IsNull() && myProxy->HasAlphaTest();
myHasWeightOitOutput = !myProxy.IsNull() ? myProxy->HasWeightOitOutput() && myNbFragOutputs >= 2 : 1;
// detect the minimum GLSL version required for defined Shader Objects
@@ -308,6 +311,10 @@ Standard_Boolean OpenGl_ShaderProgram::Initialize (const Handle(OpenGl_Context)&
}
}
}
if (myHasAlphaTest)
{
anExtensions += "#define OCC_ALPHA_TEST\n";
}
if (theCtx->hasSampleVariables == OpenGl_FeatureInExtensions)
{