void TextureObjRefChunk::changeFrom(DrawEnv *pEnv,
StateChunk *old ,
UInt32 idx )
{
// change from me to me?
// this assumes I haven't changed in the meantime.
// is that a valid assumption?
if(old == this)
return;
pEnv->incNumChunkChanges();
Window *pWin = pEnv->getWindow();
if(activateTexture(pWin, idx))
return; // trying to access too many textures
if(this->getOsgGLId() != 0)
{
glBindTexture(this->getTarget(),
pWin->getGLObjectId(this->getOsgGLId()));
}
else
{
glBindTexture(this->getTarget(),
this->getOglGLId());
}
pEnv->setActiveTexTarget(idx, this->getTarget());
glEnable(this->getTarget());
}
void TextureObjRefChunk::deactivate(DrawEnv *pEnv, UInt32 idx)
{
Window *pWin = pEnv->getWindow();
if(activateTexture(pWin, idx))
return; // trying to access too many textures
glDisable(this->getTarget());
pEnv->setActiveTexTarget(idx, GL_NONE);
}
void TextureObjRefChunk::activate(DrawEnv *pEnv, UInt32 idx)
{
Window *pWin = pEnv->getWindow();
if(activateTexture(pWin, idx))
return; // trying to access too many textures
glBindTexture(this->getTarget(),
pWin->getGLObjectId(this->getGLId()));
pEnv->setActiveTexTarget(idx, this->getTarget());
glEnable(this->getTarget());
}
void Shader::setValue(const std::string& name, const GLBuffer_Ptr& value, int textureUnit /*= -1*/ )
{
sf::Int32 loc = glGetUniformLocation(m_program, name.c_str());
if (loc > -1)
{
if (textureUnit < 0)
{
textureUnit = nextTextureUnit();
}
ActivateTexture activateTexture(textureUnit);
value->bind();
glUniform1i(loc, textureUnit);
}
}
