+/**************************************************************************
+ *
+ * Copyright 2011 Jose Fonseca
+ * Copyright 2008-2009 VMware, Inc.
+ * All Rights Reserved.
+ *
+ * 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 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
+ * AUTHORS OR COPYRIGHT HOLDERS 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 <stdio.h>
+
+#include "d3dshader.hpp"
+#include "os.hpp"
+
+
+struct ID3DXBuffer : public IUnknown {
+ virtual LPVOID STDMETHODCALLTYPE GetBufferPointer(void) = 0;
+ virtual DWORD STDMETHODCALLTYPE GetBufferSize(void) = 0;
+};
+
+typedef HRESULT
+(WINAPI *PD3DXDISASSEMBLESHADER)(
+ CONST DWORD *pShader,
+ BOOL EnableColorCode,
+ LPCSTR pComments,
+ ID3DXBuffer **ppDisassembly
+);
+
+
+HRESULT
+DisassembleShader(const DWORD *tokens, IDisassemblyBuffer **ppDisassembly)
+{
+ static BOOL firsttime = TRUE;
+
+ /*
+ * TODO: Consider using d3dcompile_xx.dll per
+ * http://msdn.microsoft.com/en-us/library/windows/desktop/ee663275.aspx
+ */
+
+ static HMODULE hD3DXModule = NULL;
+ static PD3DXDISASSEMBLESHADER pfnD3DXDisassembleShader = NULL;
+
+ if (firsttime) {
+ if (!hD3DXModule) {
+ unsigned release;
+ int version;
+ for (release = 0; release <= 1; ++release) {
+ /* Version 41 corresponds to Mar 2009 version of DirectX Runtime / SDK */
+ for (version = 41; version >= 0; --version) {
+ char filename[256];
+ _snprintf(filename, sizeof(filename),
+ "d3dx9%s%s%u.dll", release ? "" : "d", version ? "_" : "", version);
+ hD3DXModule = LoadLibraryA(filename);
+ if (hD3DXModule)
+ goto found;
+ }
+ }
+found:
+ ;
+ }
+
+ if (hD3DXModule) {
+ if (!pfnD3DXDisassembleShader) {
+ pfnD3DXDisassembleShader = (PD3DXDISASSEMBLESHADER)GetProcAddress(hD3DXModule, "D3DXDisassembleShader");
+ }
+ }
+
+ firsttime = FALSE;
+ }
+
+ HRESULT hr = E_FAIL;
+ if (pfnD3DXDisassembleShader) {
+ hr = pfnD3DXDisassembleShader(tokens, FALSE, NULL,
+ reinterpret_cast<ID3DXBuffer **>(ppDisassembly));
+ }
+ return hr;
+}
+
+
+struct ID3D10Blob : public IUnknown {
+ virtual LPVOID STDMETHODCALLTYPE GetBufferPointer(void) = 0;
+ virtual SIZE_T STDMETHODCALLTYPE GetBufferSize(void) = 0;
+};
+
+typedef ID3D10Blob ID3DBlob;
+
+#define D3D_DISASM_ENABLE_COLOR_CODE 0x00000001
+#define D3D_DISASM_ENABLE_DEFAULT_VALUE_PRINTS 0x00000002
+#define D3D_DISASM_ENABLE_INSTRUCTION_NUMBERING 0x00000004
+#define D3D_DISASM_ENABLE_INSTRUCTION_CYCLE 0x00000008
+#define D3D_DISASM_DISABLE_DEBUG_INFO 0x00000010
+#define D3D_DISASM_ENABLE_INSTRUCTION_OFFSET 0x00000020
+#define D3D_DISASM_INSTRUCTION_ONLY 0x00000040
+
+typedef HRESULT
+(WINAPI *PFND3DDISASSEMBLE)(
+ LPCVOID pSrcData,
+ SIZE_T SrcDataSize,
+ UINT Flags,
+ LPCSTR szComments,
+ ID3DBlob **ppDisassembly
+);
+
+static PFND3DDISASSEMBLE pfnD3DDisassemble = NULL;
+
+typedef HRESULT
+(WINAPI *PFND3D10DISASSEMBLESHADER)(
+ const void *pShader,
+ SIZE_T BytecodeLength,
+ BOOL EnableColorCode,
+ LPCSTR pComments,
+ ID3D10Blob **ppDisassembly
+);
+
+static PFND3D10DISASSEMBLESHADER pfnD3D10DisassembleShader = NULL;
+
+
+HRESULT
+DisassembleShader(const void *pShaderBytecode, SIZE_T BytecodeLength, IDisassemblyBuffer **ppDisassembly)
+{
+ static bool firsttime = true;
+
+ if (firsttime) {
+ char szFilename[MAX_PATH];
+ HMODULE hModule = NULL;
+ int version;
+ for (version = 44; version >= 33; --version) {
+ _snprintf(szFilename, sizeof(szFilename), "d3dcompiler_%i.dll", version);
+ hModule = LoadLibraryA(szFilename);
+ if (hModule) {
+ pfnD3DDisassemble = (PFND3DDISASSEMBLE)
+ GetProcAddress(hModule, "D3DDisassemble");
+ if (pfnD3DDisassemble) {
+ break;
+ }
+ }
+ }
+ if (!pfnD3DDisassemble) {
+ /*
+ * Fallback to D3D10DisassembleShader, which should be always present.
+ */
+ if (GetSystemDirectoryA(szFilename, MAX_PATH)) {
+ strcat(szFilename, "\\d3d10.dll");
+ hModule = LoadLibraryA(szFilename);
+ if (hModule) {
+ pfnD3D10DisassembleShader = (PFND3D10DISASSEMBLESHADER)
+ GetProcAddress(hModule, "D3D10DisassembleShader");
+ }
+ }
+ }
+
+ firsttime = false;
+ }
+
+ HRESULT hr = E_FAIL;
+
+ if (pfnD3DDisassemble) {
+ hr = pfnD3DDisassemble(pShaderBytecode, BytecodeLength, 0, NULL,
+ reinterpret_cast<ID3DBlob **>(ppDisassembly));
+ } else if (pfnD3D10DisassembleShader) {
+ hr = pfnD3D10DisassembleShader(pShaderBytecode, BytecodeLength, 0, NULL,
+ reinterpret_cast<ID3D10Blob **>(ppDisassembly));
+ }
+
+ return hr;
+}