1 files changed, 86 insertions, 0 deletions
diff --git a/src/gallium/state_trackers/d3d1x/d3d1xshader/src/dxbc_parse.cpp b/src/gallium/state_trackers/d3d1x/d3d1xshader/src/dxbc_parse.cpp
new file mode 100644
index 0000000000..4903e2c3b9
--- /dev/null
+++ b/src/gallium/state_trackers/d3d1x/d3d1xshader/src/dxbc_parse.cpp
@@ -0,0 +1,86 @@
+/**************************************************************************
+ *
+ * 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>
+
+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;
+	uint32_t* chunk_offsets = (uint32_t*)(header + 1);
+	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(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;
+	uint32_t* chunk_offsets = (uint32_t*)(header + 1);
+	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(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;
+}