void ComputeShaderChunk::activate(DrawEnv *pEnv,
UInt32 uiIdx)
{
Window *pWin = pEnv->getWindow();
UInt32 uiValRes = pWin->validateGLObject(getGLId(),
pEnv,
KeepProgActive);
GLuint uiProgId = GLuint(pWin->getGLObjectId(getGLId()));
if(uiProgId == 0)
return;
pEnv->setActiveShader(uiProgId);
if(0x0000 == (uiValRes & ProgActive))
{
OSGGETGLFUNCBYID_GL3_ES(glUseProgram,
osgGlUseProgram,
ShaderProgram::getFuncIdUseProgram(),
pWin);
osgGlUseProgram(uiProgId);
}
pEnv->incNumShaderChanges();
updateProceduralVariables(pEnv, ShaderProcVariable::SHDAll);
}
void ComputeShaderChunk::changeFrom(DrawEnv *pEnv,
StateChunk *pOther,
UInt32 uiIdx)
{
ComputeShaderChunk *pOld = dynamic_cast<ComputeShaderChunk *>(pOther);
// pOther can be a ShaderExecutableChunk, since we share the StateClass id
// with it
if(pOld != NULL)
{
Window *pWin = pEnv->getWindow();
GLuint uiProgId = GLuint(pWin->getGLObjectId(getGLId()));
UInt32 uiDep = ShaderProcVariable::SHDObject;
if(uiProgId != pEnv->getActiveShader())
{
UInt32 uiValRes = pWin->validateGLObject(getGLId(),
pEnv,
KeepProgActive);
uiProgId = GLuint(pWin->getGLObjectId(getGLId()));
if(uiProgId == 0)
return;
pEnv->setActiveShader(uiProgId);
if(0x0000 == (uiValRes & ProgActive))
{
OSGGETGLFUNCBYID_GL3_ES(glUseProgram,
osgGlUseProgram,
ShaderProgram::getFuncIdUseProgram(),
pWin);
osgGlUseProgram(uiProgId);
}
uiDep = ShaderProcVariable::SHDAll;
pEnv->incNumShaderChanges();
}
updateProceduralVariables(pEnv, uiDep);
}
else
{
pOther->deactivate(pEnv, uiIdx);
activate (pEnv, uiIdx);
pEnv->incNumShaderChanges();
}
}
void ShaderExecutableChunk::changeFrom(DrawEnv *pEnv,
StateChunk *pOther,
UInt32 uiIdx)
{
ShaderExecutableChunk *pOld = dynamic_cast<ShaderExecutableChunk *>(pOther);
Window *pWin = pEnv->getWindow();
GLuint uiProgId = GLuint(pWin->getGLObjectId(getGLId()));
UInt32 uiDep = ShaderProcVariable::SHDObject;
if(uiProgId != pEnv->getActiveShader())
{
#if 0
FragmentShaderIt fIt = _mfFragmentShader.begin();
FragmentShaderIt fEnd = _mfFragmentShader.end ();
for(; fIt != fEnd; ++fIt)
{
(*fIt)->validate(pEnv);
}
GeometryShaderIt gIt = _mfGeometryShader.begin();
GeometryShaderIt gEnd = _mfGeometryShader.end ();
for(; gIt != gEnd; ++gIt)
{
(*gIt)->validate(pEnv);
}
VertexShaderIt vIt = _mfVertexShader.begin();
VertexShaderIt vEnd = _mfVertexShader.end ();
for(; vIt != vEnd; ++vIt)
{
(*vIt)->validate(pEnv);
}
#endif
UInt32 uiValRes = pWin->validateGLObject(getGLId(),
pEnv,
KeepProgActive);
if(uiProgId == 0)
return;
if(0x0000 == (uiValRes & ProgActive))
{
OSGGETGLFUNC(OSGglUseProgramProc,
osgGlUseProgram,
ShaderProgram::getFuncIdUseProgram());
pEnv->setActiveShader(uiProgId);
osgGlUseProgram (uiProgId);
if(_mfAttributes.size() == 0)
{
pEnv->addRequiredOGLFeature(HardwareContext::HasAttribAliasing);
}
}
if(_sfPointSize.getValue() == true)
{
if(pOld->getPointSize() == false)
{
glEnable(GL_VERTEX_PROGRAM_POINT_SIZE_ARB);
}
}
else
{
if(pOld->getPointSize() == true)
{
glDisable(GL_VERTEX_PROGRAM_POINT_SIZE_ARB);
}
}
uiDep = ShaderProcVariable::SHDAll;
}
updateProceduralVariables(pEnv, uiDep);
}
