GLvoid FrameBufferObject::attachDepth(GLuint width, GLuint height)
{
std::shared_ptr<Texture> depth = std::make_shared<Texture>(getGLContext(), width, height, GL_DEPTH_COMPONENT, GL_DEPTH_COMPONENT, GL_UNSIGNED_BYTE,
GL_LINEAR, GL_LINEAR,
GL_REPLACE, GL_REPEAT);
attachDepth(depth);
}
/**
* Process any change in depth setup.
* The clauses could cause the attachments to be bound every frame
* but since we only end up in this function when something has
* changed this wount happen.
*/
void SoXipFbo::processDepthMods()
{
if (mFboMod.hasModDepth)
{
if (mIsDepthAllocated)
deallocateInternalDepth();
attachDepth();
//SoDebugError::postInfo("SoXipFbo", "Attached external depth");
}
else if (!mFboMod.hasModDepth)
{
if (!mIsDepthAllocated)
{
allocateInternalDepth();
attachDepth();
//SoDebugError::postInfo("SoXipFbo", "Attached internal depth");
}
}
}
bool ccFrameBufferObject::initDepth(GLint wrapParam/*=GL_CLAMP_TO_BORDER*/,
GLenum internalFormat/*=GL_DEPTH_COMPONENT32*/,
GLint minMagFilter/*=GL_NEAREST*/,
GLenum target/*=GL_TEXTURE_2D*/)
{
if (!m_isValid || m_fboId == 0)
{
assert(false);
return false;
}
if (!start())
{
return false;
}
//create the depth texture
m_glFunc.glPushAttrib(GL_ENABLE_BIT);
m_glFunc.glEnable(GL_TEXTURE_2D);
GLuint texID = 0;
m_glFunc.glGenTextures(1, &texID);
m_glFunc.glBindTexture(target, texID);
m_glFunc.glTexParameteri(target, GL_TEXTURE_WRAP_S, wrapParam);
m_glFunc.glTexParameteri(target, GL_TEXTURE_WRAP_T, wrapParam);
m_glFunc.glTexParameteri(target, GL_DEPTH_TEXTURE_MODE, GL_LUMINANCE);
m_glFunc.glTexParameteri(target, GL_TEXTURE_COMPARE_MODE, GL_NONE);
m_glFunc.glTexParameteri(target, GL_TEXTURE_MIN_FILTER, minMagFilter);
m_glFunc.glTexParameteri(target, GL_TEXTURE_MAG_FILTER, minMagFilter);
m_glFunc.glTexImage2D (target, 0, internalFormat, m_width, m_height, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_BYTE, 0);
m_glFunc.glBindTexture (target, 0);
m_glFunc.glPopAttrib();
if (attachDepth(texID, true, target))
{
return true;
}
else
{
m_glFunc.glDeleteTextures(1, &texID);
return false;
}
}
void GLtarget::attachDepth(Target* depth) {
AX_ASSERT(depth->isTexture());
AX_ASSERT(depth->isDepthFormat());
GLtarget* gldepth = dynamic_cast<GLtarget*>(depth);
attachDepth(gldepth);
}
