DocGetBlob

Env::DocGetBlob

uint32_t DocGetBlob(const char* szID, void* pOut, uint32_t nLen);

Reads application shader input binary hex argument with name szID

Parameters

• szID : 0-terminated string, the name of the argument
• pOut : pointer to the result buffer
• nLen : the size of the result buffer

Return value

• 0 if failed
• size of blob in bytes otherwise

Notes

• if blob length is bigger than the requested size nLen - return the blob size
• if parsed less than requested - return size parsed.
• the requested size is returned only if it equals to the blob size, and was successfully parsed

Example

static const char szName[] = "contract.shader";
// request size of the buffer
uint32_t nSize = Env::DocGetBlob(szName, nullptr, 0);
if (!nSize)
    return 0;

// allocate buffer
void* p = Env::StackAlloc(nSize);
Env::DocGetBlob(szName, p, nSize);