diff --git a/src/GLideNHQ/TextureFilters.cpp b/src/GLideNHQ/TextureFilters.cpp
index 458b2f8a..83343ae1 100644
--- a/src/GLideNHQ/TextureFilters.cpp
+++ b/src/GLideNHQ/TextureFilters.cpp
@@ -23,6 +23,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
 #include <stdlib.h>
 #include <string.h>
+#include <vector>
 #include "TextureFilters.h"
 #include "TxUtil.h"
 
@@ -745,7 +746,8 @@ void deposterizeV(uint32* data, uint32* out, int w, int h, int l, int u) {
 
 static
 void DePosterize(uint32* source, uint32* dest, int width, int height) {
-	uint32 * buf = (uint32*)TxMemBuf::getInstance()->get(3);
+	std::vector<uint32> tmpvec(width*height);
+	uint32 * buf = tmpvec.data();
 	deposterizeH(source, buf, width, 0, height);
 	deposterizeV(buf, dest, width, height, 0, height);
 	deposterizeH(dest, buf, width, 0, height);
@@ -753,8 +755,10 @@ void DePosterize(uint32* source, uint32* dest, int width, int height) {
 }
 
 void filter_8888(uint32 *src, uint32 srcwidth, uint32 srcheight, uint32 *dest, uint32 filter) {
+	std::vector<uint32> tmpvec;
 	if (filter & DEPOSTERIZE) {
-		uint32 * tex = (uint32*)TxMemBuf::getInstance()->get(2);
+		tmpvec.resize(srcwidth * srcheight);
+		uint32 * tex = tmpvec.data();
 		DePosterize(src, tex, srcwidth, srcheight);
 		src = tex;
 	}
diff --git a/src/GLideNHQ/TxFilter.cpp b/src/GLideNHQ/TxFilter.cpp
index 0a6d0991..d98720d2 100644
--- a/src/GLideNHQ/TxFilter.cpp
+++ b/src/GLideNHQ/TxFilter.cpp
@@ -116,7 +116,7 @@ TxFilter::TxFilter(int maxwidth, int maxheight, int maxbpp, int options,
 	if (ident && wcscmp(ident, wst("DEFAULT")) != 0)
 		_ident.assign(ident);
 
-	if (TxMemBuf::getInstance()->init(_maxwidth, _maxheight, (_options & DEPOSTERIZE) ? 1 : 0)) {
+	if (TxMemBuf::getInstance()->init(_maxwidth, _maxheight)) {
 		if (!_tex1)
 			_tex1 = TxMemBuf::getInstance()->get(0);
 
diff --git a/src/GLideNHQ/TxUtil.cpp b/src/GLideNHQ/TxUtil.cpp
index a329c69a..0054f979 100644
--- a/src/GLideNHQ/TxUtil.cpp
+++ b/src/GLideNHQ/TxUtil.cpp
@@ -25,6 +25,7 @@
 #include "TxDbg.h"
 #include <zlib.h>
 #include <malloc.h>
+#include <assert.h>
 
 #if defined (OS_MAC_OS_X)
 #include <sys/param.h>
@@ -530,7 +531,7 @@ TxUtil::getNumberofProcessors()
 TxMemBuf::TxMemBuf()
 {
 	int i;
-	for (i = 0; i < 4; i++) {
+	for (i = 0; i < 2; i++) {
 		_tex[i] = nullptr;
 		_size[i] = 0;
 	}
@@ -542,10 +543,9 @@ TxMemBuf::~TxMemBuf()
 }
 
 boolean
-TxMemBuf::init(int maxwidth, int maxheight, boolean deposterize)
+TxMemBuf::init(int maxwidth, int maxheight)
 {
-	_numBufs = deposterize ? 4 : 2;
-	for (uint32 i = 0; i < _numBufs; i++) {
+	for (uint32 i = 0; i < 2; i++) {
 		if (!_tex[i]) {
 			_tex[i] = (uint8 *)malloc(maxwidth * maxheight * 4);
 			_size[i] = maxwidth * maxheight * 4;
@@ -563,7 +563,7 @@ void
 TxMemBuf::shutdown()
 {
 	int i;
-	for (i = 0; i < _numBufs; i++) {
+	for (i = 0; i < 2; i++) {
 		if (_tex[i]) free(_tex[i]);
 		_tex[i] = nullptr;
 		_size[i] = 0;
@@ -573,13 +573,15 @@ TxMemBuf::shutdown()
 uint8*
 TxMemBuf::get(unsigned int num)
 {
-	return ((num < _numBufs) ? _tex[num] : nullptr);
+	assert(num < 2);
+	return _tex[num];
 }
 
 uint32
 TxMemBuf::size_of(unsigned int num)
 {
-	return ((num < _numBufs) ? _size[num] : 0);
+	assert(num < 2);
+	return _size[num];
 }
 
 void setTextureFormat(uint16 internalFormat, GHQTexInfo * info)
diff --git a/src/GLideNHQ/TxUtil.h b/src/GLideNHQ/TxUtil.h
index f2485f54..a1b338d8 100644
--- a/src/GLideNHQ/TxUtil.h
+++ b/src/GLideNHQ/TxUtil.h
@@ -56,9 +56,8 @@ public:
 class TxMemBuf
 {
 private:
-	uint8 *_tex[4];
-	uint32 _size[4];
-	uint32 _numBufs;
+	uint8 *_tex[2];
+	uint32 _size[2];
 	TxMemBuf();
 public:
 	static TxMemBuf* getInstance() {
@@ -66,7 +65,7 @@ public:
 		return &txMemBuf;
 	}
 	~TxMemBuf();
-	boolean init(int maxwidth, int maxheight, boolean deposterize);
+	boolean init(int maxwidth, int maxheight);
 	void shutdown(void);
 	uint8 *get(unsigned int num);
 	uint32 size_of(unsigned int num);