OpenCascade/occt
1
0
Fork 0
mirror of https://git.dev.opencascade.org/repos/occt.git synced 2025-08-19 13:40:49 +03:00
Code Activity

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

Browse Source
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
Download Patch File Download Diff File Expand all files Collapse all files

60
src/OpenGl/OpenGl_Context.cxx
View File

@@ -191,6 +191,7 @@ OpenGl_Context::OpenGl_Context (const Handle(OpenGl_Caps)& theCaps)
myDrawBuffers (1),
myDefaultVao (0),
myColorMask (true),
myAlphaToCoverage (false),
myIsGlDebugCtx (Standard_False),
myResolution (Graphic3d_RenderingParams::THE_DEFAULT_RESOLUTION),
myResolutionRatio (1.0f),
@@ -3193,20 +3194,27 @@ void OpenGl_Context::SetShadingMaterial (const OpenGl_AspectFace* theAspect,
// do not update material properties in case of zero reflection mode,
// because GL lighting will be disabled by OpenGl_PrimitiveArray::DrawArray() anyway.
const OpenGl_MaterialState& aMatState = myShaderManager->MaterialState();
const float anAlphaCutoff = anAspect->AlphaMode() == Graphic3d_AlphaMode_Mask
? anAspect->AlphaCutoff()
: ShortRealLast();
if (theAspect->ShadingModel() == Graphic3d_TOSM_UNLIT)
{
return;
if (anAlphaCutoff == aMatState.AlphaCutoff())
{
return;
}
}
if (myMatFront == myShaderManager->MaterialState().FrontMaterial()
&& myMatBack == myShaderManager->MaterialState().BackMaterial()
&& toDistinguish == myShaderManager->MaterialState().ToDistinguish()
&& toMapTexture == myShaderManager->MaterialState().ToMapTexture())
else if (myMatFront == aMatState.FrontMaterial()
&& myMatBack == aMatState.BackMaterial()
&& toDistinguish == aMatState.ToDistinguish()
&& toMapTexture == aMatState.ToMapTexture()
&& anAlphaCutoff == aMatState.AlphaCutoff())
{
return;
}
myShaderManager->UpdateMaterialStateTo (myMatFront, myMatBack, toDistinguish, toMapTexture);
myShaderManager->UpdateMaterialStateTo (myMatFront, myMatBack, anAlphaCutoff, toDistinguish, toMapTexture);
}
// =======================================================================
@@ -3241,9 +3249,12 @@ Standard_Boolean OpenGl_Context::CheckIsTransparent (const OpenGl_AspectFace* th
theAlphaBack = aMatBackSrc .Alpha();
}
const bool isTransparent = theAlphaFront < 1.0f
|| theAlphaBack < 1.0f;
return isTransparent;
if (anAspect->AlphaMode() == Graphic3d_AlphaMode_BlendAuto)
{
return theAlphaFront < 1.0f
|| theAlphaBack < 1.0f;
}
return anAspect->AlphaMode() == Graphic3d_AlphaMode_Blend;
}
// =======================================================================
@@ -3752,3 +3763,32 @@ bool OpenGl_Context::SetColorMask (bool theToWriteColor)
myColorMask = theToWriteColor;
return anOldValue;
}
// =======================================================================
// function : SetSampleAlphaToCoverage
// purpose :
// =======================================================================
bool OpenGl_Context::SetSampleAlphaToCoverage (bool theToEnable)
{
if (myAlphaToCoverage == theToEnable)
{
return myAlphaToCoverage;
}
if (core15fwd != NULL)
{
if (theToEnable)
{
//core15fwd->core15fwd->glSampleCoverage (1.0f, GL_FALSE);
core15fwd->glEnable (GL_SAMPLE_ALPHA_TO_COVERAGE);
}
else
{
core15fwd->glDisable (GL_SAMPLE_ALPHA_TO_COVERAGE);
}
}
const bool anOldValue = myAlphaToCoverage;
myAlphaToCoverage = theToEnable;
return anOldValue;
}