From 8876b1a376af3ecbc434d5f5788d85658757ee37 Mon Sep 17 00:00:00 2001
From: havoc <havoc@d7cf8633-e32d-0410-b094-e92efae38249>
Date: Thu, 19 Aug 2010 14:36:01 +0000
Subject: [PATCH] load d3dx9_*.dll dynamically to get D3DXCompileShader to fix
 a compile error with mingw headers, this also means it doesn't matter which
 version is present on the user's system

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@10401 d7cf8633-e32d-0410-b094-e92efae38249
---
 gl_rmain.c | 107 +++++++++++++++++++++++++++++++++++------------------
 1 file changed, 71 insertions(+), 36 deletions(-)

diff --git a/gl_rmain.c b/gl_rmain.c
index 9abaabf6..84a2974e 100644
--- a/gl_rmain.c
+++ b/gl_rmain.c
@@ -4700,10 +4700,8 @@ static char *R_HLSL_GetText(const char *filename, qboolean printfromdisknotice)
 }
 
 #include <d3dx9.h>
-#include <d3dx9mesh.h>
-#ifdef _MSC_VER
-#pragma comment(lib, "d3dx9.lib")
-#endif
+//#include <d3dx9shader.h>
+//#include <d3dx9mesh.h>
 
 static void R_HLSL_CacheShader(r_hlsl_permutation_t *p, const char *cachename, const char *vertstring, const char *fragstring)
 {
@@ -4729,42 +4727,79 @@ static void R_HLSL_CacheShader(r_hlsl_permutation_t *p, const char *cachename, c
 	psbin = (DWORD *)FS_LoadFile(va("%s.psbin", cachename), r_main_mempool, true, &psbinsize);
 	if ((!vsbin && vertstring) || (!psbin && fragstring))
 	{
-		vsbin = (DWORD *)Mem_Realloc(tempmempool, vsbin, 0);
-		psbin = (DWORD *)Mem_Realloc(tempmempool, psbin, 0);
-		if (vertstring && vertstring[0])
-		{
-			vsresult = D3DXCompileShader(vertstring, strlen(vertstring), NULL, NULL, "main", vsversion, 0, &vsbuffer, &vslog, &vsconstanttable);
-			if (vsbuffer)
+		const char* dllnames_d3dx9 [] =
+		{
+			"d3dx9_43.dll",
+			"d3dx9_42.dll",
+			"d3dx9_41.dll",
+			"d3dx9_40.dll",
+			"d3dx9_39.dll",
+			"d3dx9_38.dll",
+			"d3dx9_37.dll",
+			"d3dx9_36.dll",
+			"d3dx9_35.dll",
+			"d3dx9_34.dll",
+			"d3dx9_33.dll",
+			"d3dx9_32.dll",
+			"d3dx9_31.dll",
+			"d3dx9_30.dll",
+			"d3dx9_29.dll",
+			"d3dx9_28.dll",
+			"d3dx9_27.dll",
+			"d3dx9_26.dll",
+			"d3dx9_25.dll",
+			"d3dx9_24.dll",
+			NULL
+		};
+		dllhandle_t d3dx9_dll = NULL;
+		HRESULT WINAPI (*qD3DXCompileShader)(LPCSTR pSrcData, UINT SrcDataLen, CONST D3DXMACRO* pDefines, LPD3DXINCLUDE pInclude, LPCSTR pFunctionName, LPCSTR pProfile, DWORD Flags, LPD3DXBUFFER* ppShader, LPD3DXBUFFER* ppErrorMsgs, LPD3DXCONSTANTTABLE* ppConstantTable);
+		dllfunction_t d3dx9_dllfuncs[] =
+		{
+			{"D3DXCompileShader",			(void **) &qD3DXCompileShader},
+			{NULL, NULL}
+		};
+		if (Sys_LoadLibrary(dllnames_d3dx9, &d3dx9_dll, d3dx9_dllfuncs))
+		{
+			vsbin = (DWORD *)Mem_Realloc(tempmempool, vsbin, 0);
+			psbin = (DWORD *)Mem_Realloc(tempmempool, psbin, 0);
+			if (vertstring && vertstring[0])
 			{
-				vsbinsize = vsbuffer->GetBufferSize();
-				vsbin = (DWORD *)Mem_Alloc(tempmempool, vsbinsize);
-				memcpy(vsbin, vsbuffer->GetBufferPointer(), vsbinsize);
-				vsbuffer->Release();
-			}
-			if (vslog)
-			{
-				strlcpy(temp, (const char *)vslog->GetBufferPointer(), min(sizeof(temp), vslog->GetBufferSize()));
-				Con_Printf("HLSL vertex shader compile output for %s follows:\n%s\n", cachename, temp);
-				vslog->Release();
-			}
-		}
-		if (fragstring && fragstring[0])
-		{
-			psresult = D3DXCompileShader(fragstring, strlen(fragstring), NULL, NULL, "main", psversion, 0, &psbuffer, &pslog, &psconstanttable);
-			if (psbuffer)
-			{
-				psbinsize = psbuffer->GetBufferSize();
-				psbin = (DWORD *)Mem_Alloc(tempmempool, psbinsize);
-				memcpy(psbin, psbuffer->GetBufferPointer(), psbinsize);
-				psbuffer->Release();
+				vsresult = qD3DXCompileShader(vertstring, strlen(vertstring), NULL, NULL, "main", vsversion, 0, &vsbuffer, &vslog, &vsconstanttable);
+				if (vsbuffer)
+				{
+					vsbinsize = vsbuffer->GetBufferSize();
+					vsbin = (DWORD *)Mem_Alloc(tempmempool, vsbinsize);
+					memcpy(vsbin, vsbuffer->GetBufferPointer(), vsbinsize);
+					vsbuffer->Release();
+				}
+				if (vslog)
+				{
+					strlcpy(temp, (const char *)vslog->GetBufferPointer(), min(sizeof(temp), vslog->GetBufferSize()));
+					Con_Printf("HLSL vertex shader compile output for %s follows:\n%s\n", cachename, temp);
+					vslog->Release();
+				}
 			}
-			if (pslog)
+			if (fragstring && fragstring[0])
 			{
-				strlcpy(temp, (const char *)pslog->GetBufferPointer(), min(sizeof(temp), pslog->GetBufferSize()));
-				Con_Printf("HLSL pixel shader compile output for %s follows:\n%s\n", cachename, temp);
-				pslog->Release();
+				psresult = qD3DXCompileShader(fragstring, strlen(fragstring), NULL, NULL, "main", psversion, 0, &psbuffer, &pslog, &psconstanttable);
+				if (psbuffer)
+				{
+					psbinsize = psbuffer->GetBufferSize();
+					psbin = (DWORD *)Mem_Alloc(tempmempool, psbinsize);
+					memcpy(psbin, psbuffer->GetBufferPointer(), psbinsize);
+					psbuffer->Release();
+				}
+				if (pslog)
+				{
+					strlcpy(temp, (const char *)pslog->GetBufferPointer(), min(sizeof(temp), pslog->GetBufferSize()));
+					Con_Printf("HLSL pixel shader compile output for %s follows:\n%s\n", cachename, temp);
+					pslog->Release();
+				}
 			}
+			Sys_UnloadLibrary(&d3dx9_dll);
 		}
+		else
+			Con_Printf("Unable to compile shader - D3DXCompileShader function not found\n");
 	}
 	if (vsbin)
 	{
@@ -6968,7 +7003,7 @@ skinframe_t *R_SkinFrame_LoadMissing(void)
 //static char *suffix[6] = {"ft", "bk", "rt", "lf", "up", "dn"};
 typedef struct suffixinfo_s
 {
-	char *suffix;
+	const char *suffix;
 	qboolean flipx, flipy, flipdiagonal;
 }
 suffixinfo_t;
-- 
2.39.2