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/**************************************************************************
*
* Copyright 2010 Luca Barbieri
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
#include <memory>
#include "dxbc.h"
#include <d3d11shader.h>
#include <d3dcommon.h>
struct dxbc_container_header
{
unsigned fourcc;
uint32_t unk[5];
uint32_t total_size;
uint32_t chunk_count;
uint32_t chunk_offsets[];
};
dxbc_container* dxbc_parse(const void* data, int size)
{
std::auto_ptr<dxbc_container> container(new dxbc_container());
container->data = data;
dxbc_container_header* header = (dxbc_container_header*)data;
if(bswap_le32(header->fourcc) != FOURCC_DXBC)
return 0;
unsigned num_chunks = bswap_le32(header->chunk_count);
for(unsigned i = 0; i < num_chunks; ++i)
{
unsigned offset = bswap_le32(header->chunk_offsets[i]);
dxbc_chunk_header* chunk = (dxbc_chunk_header*)((char*)data + offset);
unsigned fourcc = bswap_le32(chunk->fourcc);
container->chunk_map[fourcc] = i;
container->chunks.push_back(chunk);
}
return container.release();
}
dxbc_chunk_header* dxbc_find_chunk(const void* data, int size, unsigned fourcc)
{
dxbc_container_header* header = (dxbc_container_header*)data;
if(bswap_le32(header->fourcc) != FOURCC_DXBC)
return 0;
unsigned num_chunks = bswap_le32(header->chunk_count);
for(unsigned i = 0; i < num_chunks; ++i)
{
unsigned offset = bswap_le32(header->chunk_offsets[i]);
dxbc_chunk_header* chunk = (dxbc_chunk_header*)((char*)data + offset);
if(bswap_le32(chunk->fourcc) == fourcc)
return chunk;
}
return 0;
}
int dxbc_parse_signature(dxbc_chunk_signature* sig, D3D11_SIGNATURE_PARAMETER_DESC** params)
{
unsigned count = bswap_le32(sig->count);
*params = (D3D11_SIGNATURE_PARAMETER_DESC*)malloc(sizeof(D3D11_SIGNATURE_PARAMETER_DESC) * count);
for (unsigned i = 0; i < count; ++i)
{
D3D11_SIGNATURE_PARAMETER_DESC& param = (*params)[i];
param.SemanticName = (char*)&sig->count + bswap_le32(sig->elements[i].name_offset);
param.SemanticIndex = bswap_le32(sig->elements[i].semantic_index);
param.SystemValueType = (D3D_NAME)bswap_le32(sig->elements[i].system_value_type);
param.ComponentType = (D3D_REGISTER_COMPONENT_TYPE)bswap_le32(sig->elements[i].component_type);
param.Mask = sig->elements[i].mask;
param.ReadWriteMask = sig->elements[i].read_write_mask;
param.Stream = sig->elements[i].stream;
}
return count;
}
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