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0026810: Visualization, TKOpenGl - line is shown without stipple aspect with FFP turned off on OpenGL before 3.2

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OpenGl_ShaderManager::prepareStdProgramFlat() enable stipple line GLSL program
within OpenGL 3.0+, OpenGL ES 3.0+ and OpenGL 2.0+ with GL_EXT_gpu_shader4 extension.
This commit is contained in:
kgv 2015-10-24 17:32:36 +03:00 committed by bugmaster
parent 15478b1b87
commit 959a265a68
1 changed files with 11 additions and 6 deletions
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17
src/OpenGl/OpenGl_ShaderManager.cxx
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@ -1260,22 +1260,27 @@ Standard_Boolean OpenGl_ShaderManager::prepareStdProgramFlat (Handle(OpenGl_Shad
TCollection_AsciiString aSrcVertEndMain;
if ((theBits & OpenGl_PO_StippleLine) != 0)
{
bool hasCaps = false;
bool hasGlslBitOps = false;
#if defined(GL_ES_VERSION_2_0)
if (myContext->IsGlGreaterEqual (3, 0))
{
aProgramSrc->SetHeader ("#version 300 es");
hasCaps = true;
hasGlslBitOps = true;
}
#else
if (myContext->core32 != NULL)
if (myContext->IsGlGreaterEqual (3, 0))
{
aProgramSrc->SetHeader ("#version 150");
hasCaps = true;
aProgramSrc->SetHeader ("#version 130");
hasGlslBitOps = true;
}
else if(myContext->CheckExtension("GL_EXT_gpu_shader4"))
{
aProgramSrc->SetHeader ("#extension GL_EXT_gpu_shader4 : enable");
hasGlslBitOps = true;
}
#endif
if (hasCaps)
if (hasGlslBitOps)
{
aSrcVertExtraOut +=
EOL"THE_SHADER_OUT vec2 ScreenSpaceCoord;";