GC3Denum WebGLFramebuffer::getColorBufferFormat() const
{
if (!object())
return 0;
WebGLAttachment* attachment = getAttachment(GraphicsContext3D::COLOR_ATTACHMENT0);
if (!attachment)
return 0;
return attachment->getFormat();
}
GC3Denum WebGLFramebuffer::checkStatus(const char** reason) const
{
unsigned int count = 0;
GC3Dsizei width = 0, height = 0;
bool haveDepth = false;
bool haveStencil = false;
bool haveDepthStencil = false;
for (AttachmentMap::const_iterator it = m_attachments.begin(); it != m_attachments.end(); ++it) {
WebGLAttachment* attachment = it->value.get();
if (!isAttachmentComplete(attachment, it->key, reason))
return GraphicsContext3D::FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
if (!attachment->isValid()) {
*reason = "attachment is not valid";
return GraphicsContext3D::FRAMEBUFFER_UNSUPPORTED;
}
if (!attachment->getFormat()) {
*reason = "attachment is an unsupported format";
return GraphicsContext3D::FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
}
switch (it->key) {
case GraphicsContext3D::DEPTH_ATTACHMENT:
haveDepth = true;
break;
case GraphicsContext3D::STENCIL_ATTACHMENT:
haveStencil = true;
break;
case GraphicsContext3D::DEPTH_STENCIL_ATTACHMENT:
haveDepthStencil = true;
break;
}
if (!count) {
width = attachment->getWidth();
height = attachment->getHeight();
} else {
if (width != attachment->getWidth() || height != attachment->getHeight()) {
*reason = "attachments do not have the same dimensions";
return GraphicsContext3D::FRAMEBUFFER_INCOMPLETE_DIMENSIONS;
}
}
++count;
}
if (!count) {
*reason = "no attachments";
return GraphicsContext3D::FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT;
}
if (!width || !height) {
*reason = "framebuffer has a 0 dimension";
return GraphicsContext3D::FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
}
// WebGL specific: no conflicting DEPTH/STENCIL/DEPTH_STENCIL attachments.
if ((haveDepthStencil && (haveDepth || haveStencil)) || (haveDepth && haveStencil)) {
*reason = "conflicting DEPTH/STENCIL/DEPTH_STENCIL attachments";
return GraphicsContext3D::FRAMEBUFFER_UNSUPPORTED;
}
return GraphicsContext3D::FRAMEBUFFER_COMPLETE;
}
