diff --git a/Source/Core/VideoCommon/Src/LightingShaderGen.h b/Source/Core/VideoCommon/Src/LightingShaderGen.h
index a58809942a..e8b30d86a8 100644
--- a/Source/Core/VideoCommon/Src/LightingShaderGen.h
+++ b/Source/Core/VideoCommon/Src/LightingShaderGen.h
@@ -24,18 +24,17 @@
 #include "NativeVertexFormat.h"
 #include "XFMemory.h"
 
-// T.uid_data needs to have a struct named lighting_uid
-template<class T,class UidType>
-void GenerateLightShader(T& object, int index, int litchan_index, const char* lightsName, int coloralpha)
+// uid_data needs to have a struct named lighting_uid
+template<class T,class UidDataT>
+void GenerateLightShader(T& object, UidDataT& uid_data, int index, int litchan_index, const char* lightsName, int coloralpha)
 {
-#define SetUidField(name, value) if (&object.GetUidData() != NULL) { object.GetUidData().name = value; };
 	const LitChannel& chan = (litchan_index > 1) ? xfregs.alpha[litchan_index-2] : xfregs.color[litchan_index];
 	const char* swizzle = "xyzw";
 	if (coloralpha == 1 ) swizzle = "xyz";
 	else if (coloralpha == 2 ) swizzle = "w";
 
-	SetUidField(lit_chans[litchan_index].attnfunc, chan.attnfunc);
-	SetUidField(lit_chans[litchan_index].diffusefunc, chan.diffusefunc);
+	uid_data.lit_chans[litchan_index].attnfunc = chan.attnfunc;
+	uid_data.lit_chans[litchan_index].diffusefunc = chan.diffusefunc;
 	if (!(chan.attnfunc & 1)) {
 		// atten disabled
 		switch (chan.diffusefunc) {
@@ -94,8 +93,8 @@ void GenerateLightShader(T& object, int index, int litchan_index, const char* li
 // materials name is I_MATERIALS in vs and I_PMATERIALS in ps
 // inColorName is color in vs and colors_ in ps
 // dest is o.colors_ in vs and colors_ in ps
-template<class T, class UidType>
-void GenerateLightingShader(T& object, int components, const char* materialsName, const char* lightsName, const char* inColorName, const char* dest)
+template<class T, class UidDataT>
+void GenerateLightingShader(T& object, UidDataT& uid_data, int components, const char* materialsName, const char* lightsName, const char* inColorName, const char* dest)
 {
 	for (unsigned int j = 0; j < xfregs.numChan.numColorChans; j++)
 	{
@@ -104,7 +103,7 @@ void GenerateLightingShader(T& object, int components, const char* materialsName
 
 		object.Write("{\n");
 
-		SetUidField(lit_chans[j].matsource, xfregs.color[j].matsource);
+		uid_data.lit_chans[j].matsource = xfregs.color[j].matsource;
 		if (color.matsource) {// from vertex
 			if (components & (VB_HAS_COL0 << j))
 				object.Write("mat = %s%d;\n", inColorName, j);
@@ -116,9 +115,9 @@ void GenerateLightingShader(T& object, int components, const char* materialsName
 		else // from color
 			object.Write("mat = %s[%d];\n", materialsName, j+2);
 
-		SetUidField(lit_chans[j].enablelighting, xfregs.color[j].enablelighting);
+		uid_data.lit_chans[j].enablelighting = xfregs.color[j].enablelighting;
 		if (color.enablelighting) {
-			SetUidField(lit_chans[j].ambsource, xfregs.color[j].ambsource);
+			uid_data.lit_chans[j].ambsource = xfregs.color[j].ambsource;
 			if (color.ambsource) { // from vertex
 				if (components & (VB_HAS_COL0<<j) )
 					object.Write("lacc = %s%d;\n", inColorName, j);
@@ -136,7 +135,7 @@ void GenerateLightingShader(T& object, int components, const char* materialsName
 		}
 
 		// check if alpha is different
-		SetUidField(lit_chans[j+2].matsource, xfregs.alpha[j].matsource);
+		uid_data.lit_chans[j+2].matsource = xfregs.alpha[j].matsource;
 		if (alpha.matsource != color.matsource) {
 			if (alpha.matsource) {// from vertex
 				if (components & (VB_HAS_COL0<<j))
@@ -149,10 +148,10 @@ void GenerateLightingShader(T& object, int components, const char* materialsName
 				object.Write("mat.w = %s[%d].w;\n", materialsName, j+2);
 		}
 
-		SetUidField(lit_chans[j+2].enablelighting, xfregs.alpha[j].enablelighting);
+		uid_data.lit_chans[j+2].enablelighting = xfregs.alpha[j].enablelighting;
 		if (alpha.enablelighting)
 		{
-			SetUidField(lit_chans[j+2].ambsource, xfregs.alpha[j].ambsource);
+			uid_data.lit_chans[j+2].ambsource = xfregs.alpha[j].ambsource;
 			if (alpha.ambsource) {// from vertex
 				if (components & (VB_HAS_COL0<<j) )
 					object.Write("lacc.w = %s%d.w;\n", inColorName, j);
@@ -173,12 +172,12 @@ void GenerateLightingShader(T& object, int components, const char* materialsName
 		{
 			// both have lighting, test if they use the same lights
 			int mask = 0;
-			SetUidField(lit_chans[j].attnfunc, color.attnfunc);
-			SetUidField(lit_chans[j+2].attnfunc, alpha.attnfunc);
-			SetUidField(lit_chans[j].diffusefunc, color.diffusefunc);
-			SetUidField(lit_chans[j+2].diffusefunc, alpha.diffusefunc);
-			SetUidField(lit_chans[j].light_mask, color.GetFullLightMask());
-			SetUidField(lit_chans[j+2].light_mask, alpha.GetFullLightMask());
+			uid_data.lit_chans[j].attnfunc = color.attnfunc;
+			uid_data.lit_chans[j+2].attnfunc = alpha.attnfunc;
+			uid_data.lit_chans[j].diffusefunc = color.diffusefunc;
+			uid_data.lit_chans[j+2].diffusefunc = alpha.diffusefunc;
+			uid_data.lit_chans[j].light_mask = color.GetFullLightMask();
+			uid_data.lit_chans[j+2].light_mask = alpha.GetFullLightMask();
 			if(color.lightparams == alpha.lightparams)
 			{
 				mask = color.GetFullLightMask() & alpha.GetFullLightMask();
@@ -188,7 +187,7 @@ void GenerateLightingShader(T& object, int components, const char* materialsName
 					{
 						if (mask & (1<<i))
 						{
-							GenerateLightShader<T,UidType>(object, i, j, lightsName, 3);
+							GenerateLightShader<T,UidDataT>(object, uid_data, i, j, lightsName, 3);
 						}
 					}
 				}
@@ -198,9 +197,9 @@ void GenerateLightingShader(T& object, int components, const char* materialsName
 			for (int i = 0; i < 8; ++i)
 			{
 				if (!(mask&(1<<i)) && (color.GetFullLightMask() & (1<<i)))
-					GenerateLightShader<T,UidType>(object, i, j, lightsName, 1);
+					GenerateLightShader<T,UidDataT>(object, uid_data, i, j, lightsName, 1);
 				if (!(mask&(1<<i)) && (alpha.GetFullLightMask() & (1<<i)))
-					GenerateLightShader<T,UidType>(object, i, j+2, lightsName, 2);
+					GenerateLightShader<T,UidDataT>(object, uid_data, i, j+2, lightsName, 2);
 			}
 		}
 		else if (color.enablelighting || alpha.enablelighting)
@@ -210,17 +209,16 @@ void GenerateLightingShader(T& object, int components, const char* materialsName
 			const int lit_index = color.enablelighting ? j : (j+2);
 			int coloralpha = color.enablelighting ? 1 : 2;
 
-			SetUidField(lit_chans[lit_index].light_mask, workingchannel.GetFullLightMask());
+			uid_data.lit_chans[lit_index].light_mask = workingchannel.GetFullLightMask();
 			for (int i = 0; i < 8; ++i)
 			{
 				if (workingchannel.GetFullLightMask() & (1<<i))
-					GenerateLightShader<T,UidType>(object, i, lit_index, lightsName, coloralpha);
+					GenerateLightShader<T,UidDataT>(object, uid_data, i, lit_index, lightsName, coloralpha);
 			}
 		}
 		object.Write("%s%d = mat * saturate(lacc);\n", dest, j);
 		object.Write("}\n");
 	}
 }
-#undef SetUidField
 
 #endif // _LIGHTINGSHADERGEN_H_
diff --git a/Source/Core/VideoCommon/Src/PixelShaderGen.cpp b/Source/Core/VideoCommon/Src/PixelShaderGen.cpp
index 982f139fea..d9d45902fe 100644
--- a/Source/Core/VideoCommon/Src/PixelShaderGen.cpp
+++ b/Source/Core/VideoCommon/Src/PixelShaderGen.cpp
@@ -37,10 +37,10 @@
 //   output is given by .outreg
 //   tevtemp is set according to swapmodetables and
 
-template<class T> static void WriteStage(char *&p, int n, API_TYPE ApiType);
+template<class T> static void WriteStage(T& out, pixel_shader_uid_data& uid_data, int n, API_TYPE ApiType);
 template<class T> static void SampleTexture(T& out, const char *destination, const char *texcoords, const char *texswap, int texmap, API_TYPE ApiType);
-template<class T> static void WriteAlphaTest(T& out, API_TYPE ApiType,DSTALPHA_MODE dstAlphaMode, bool per_pixel_depth);
-template<class T> static void WriteFog(T& out);
+template<class T> static void WriteAlphaTest(T& out, pixel_shader_uid_data& uid_data, API_TYPE ApiType,DSTALPHA_MODE dstAlphaMode, bool per_pixel_depth);
+template<class T> static void WriteFog(T& out, pixel_shader_uid_data& uid_data);
 
 static const char *tevKSelTableC[] = // KCSEL
 {
@@ -272,13 +272,15 @@ void GeneratePixelShader(T& out, DSTALPHA_MODE dstAlphaMode, API_TYPE ApiType, u
 	// TODO: Where does this TODO belong again...?
 	// TODO: Can be optimized if using alpha pass
 
-#define SetUidField(name, value) if (&out.GetUidData() != NULL) {out.GetUidData().name = value; };
-#define OR_UidField(name, value) if (&out.GetUidData() != NULL) {out.GetUidData().name |= value; };
+	// Non-uid template parameters will write to the dummy data (=> gets optimized out)
+	pixel_shader_uid_data dummy_data;
+	pixel_shader_uid_data& uid_data = (&out.GetUidData() != NULL) ? out.GetUidData() : dummy_data;
+
 	out.SetBuffer(text);
 	if (out.GetBuffer() != NULL)
 		setlocale(LC_NUMERIC, "C"); // Reset locale for compilation
 
-///	text[sizeof(text) - 1] = 0x7C;  // canary
+	text[sizeof(text) - 1] = 0x7C;  // canary
 
 	unsigned int numStages = bpmem.genMode.numtevstages + 1;
 	unsigned int numTexgen = bpmem.genMode.numtexgens;
@@ -289,12 +291,12 @@ void GeneratePixelShader(T& out, DSTALPHA_MODE dstAlphaMode, API_TYPE ApiType, u
 	out.Write("//%i TEV stages, %i texgens, XXX IND stages\n",
 		numStages, numTexgen/*, bpmem.genMode.numindstages*/);
 
-//	SetUidField(components, components); // TODO: Enable once per pixel lighting is implemented again
-	SetUidField(dstAlphaMode, dstAlphaMode);
+//	uid_data.components = components; // TODO: Enable once per pixel lighting is implemented again
+	uid_data.dstAlphaMode = dstAlphaMode;
 
-	SetUidField(genMode.numindstages, bpmem.genMode.numindstages);
-	SetUidField(genMode.numtevstages, bpmem.genMode.numtevstages);
-	SetUidField(genMode.numtexgens, bpmem.genMode.numtexgens);
+	uid_data.genMode.numindstages = bpmem.genMode.numindstages;
+	uid_data.genMode.numtevstages = bpmem.genMode.numtevstages;
+	uid_data.genMode.numtexgens = bpmem.genMode.numtexgens;
 
 	if (ApiType == API_OPENGL)
 	{
@@ -461,7 +463,7 @@ void GeneratePixelShader(T& out, DSTALPHA_MODE dstAlphaMode, API_TYPE ApiType, u
 
 	if (g_ActiveConfig.bEnablePixelLighting && g_ActiveConfig.backend_info.bSupportsPixelLighting)
 	{
-		SetUidField(xfregs_numTexGen_numTexGens, xfregs.numTexGen.numTexGens);
+		uid_data.xfregs_numTexGen_numTexGens = xfregs.numTexGen.numTexGens;
 		if (xfregs.numTexGen.numTexGens < 7)
 		{
 			out.Write("\tfloat3 _norm0 = normalize(Normal.xyz);\n\n");
@@ -498,7 +500,7 @@ void GeneratePixelShader(T& out, DSTALPHA_MODE dstAlphaMode, API_TYPE ApiType, u
 		for (unsigned int i = 0; i < numTexgen; ++i)
 		{
 			// optional perspective divides
-			SetUidField(texMtxInfo[i].projection, xfregs.texMtxInfo[i].projection);
+			uid_data.texMtxInfo[i].projection = xfregs.texMtxInfo[i].projection;
 			if (xfregs.texMtxInfo[i].projection == XF_TEXPROJ_STQ)
 			{
 				out.Write("\tif (uv%d.z != 0.0f)", i);
@@ -520,7 +522,7 @@ void GeneratePixelShader(T& out, DSTALPHA_MODE dstAlphaMode, API_TYPE ApiType, u
 		}
 	}
 
-	SetUidField(nIndirectStagesUsed, nIndirectStagesUsed);
+	uid_data.nIndirectStagesUsed = nIndirectStagesUsed;
 	for (u32 i = 0; i < bpmem.genMode.numindstages; ++i)
 	{
 		if (nIndirectStagesUsed & (1 << i))
@@ -531,23 +533,23 @@ void GeneratePixelShader(T& out, DSTALPHA_MODE dstAlphaMode, API_TYPE ApiType, u
 			/// TODO: Cleanup...
 			if (i == 0)
 			{
-				SetUidField(tevindref.bc0, texcoord);
-				SetUidField(tevindref.bi0, texmap);
+				uid_data.tevindref.bc0 = texcoord;
+				uid_data.tevindref.bi0 = texmap;
 			}
 			else if (i == 1)
 			{
-				SetUidField(tevindref.bc1, texcoord);
-				SetUidField(tevindref.bi1, texmap);
+				uid_data.tevindref.bc1 = texcoord;
+				uid_data.tevindref.bi1 = texmap;
 			}
 			else if (i == 2)
 			{
-				SetUidField(tevindref.bc3, texcoord);
-				SetUidField(tevindref.bi2, texmap);
+				uid_data.tevindref.bc3 = texcoord;
+				uid_data.tevindref.bi2 = texmap;
 			}
 			else
 			{
-				SetUidField(tevindref.bc4, texcoord);
-				SetUidField(tevindref.bi4, texmap);
+				uid_data.tevindref.bc4 = texcoord;
+				uid_data.tevindref.bi4 = texmap;
 			}
 			if (texcoord < numTexgen)
 			{
@@ -576,17 +578,17 @@ void GeneratePixelShader(T& out, DSTALPHA_MODE dstAlphaMode, API_TYPE ApiType, u
 	// Uid fields for BuildSwapModeTable are set in WriteStage
 	BuildSwapModeTable();
 	for (unsigned int i = 0; i < numStages; i++)
-		WriteStage<T>(out, i, ApiType); // build the equation for this stage
+		WriteStage<T>(out, uid_data, i, ApiType); // build the equation for this stage
 
 	if (numStages)
 	{
 		// The results of the last texenv stage are put onto the screen,
 		// regardless of the used destination register
-		SetUidField(combiners[numStages-1].colorC.dest, bpmem.combiners[numStages-1].colorC.dest); // TODO: These probably don't need to be set anymore here...
-		SetUidField(combiners[numStages-1].alphaC.dest, bpmem.combiners[numStages-1].alphaC.dest);
+		uid_data.combiners[numStages-1].colorC.dest = bpmem.combiners[numStages-1].colorC.dest; // TODO: These probably don't need to be set anymore here...
+		uid_data.combiners[numStages-1].alphaC.dest = bpmem.combiners[numStages-1].alphaC.dest;
 		if(bpmem.combiners[numStages - 1].colorC.dest != 0)
 		{
-///			SetUidField(combiners[numStages-1].colorC.dest, bpmem.combiners[numStages-1].colorC.dest);
+///			uid_data.combiners[numStages-1].colorC.dest = bpmem.combiners[numStages-1].colorC.dest;
 			bool retrieveFromAuxRegister = !RegisterStates[bpmem.combiners[numStages - 1].colorC.dest].ColorNeedOverflowControl && RegisterStates[bpmem.combiners[numStages - 1].colorC.dest].AuxStored;
 			out.Write("\tprev.rgb = %s%s;\n", retrieveFromAuxRegister ? "c" : "" , tevCOutputTable[bpmem.combiners[numStages - 1].colorC.dest]);
 			RegisterStates[0].ColorNeedOverflowControl = RegisterStates[bpmem.combiners[numStages - 1].colorC.dest].ColorNeedOverflowControl;
@@ -603,9 +605,9 @@ void GeneratePixelShader(T& out, DSTALPHA_MODE dstAlphaMode, API_TYPE ApiType, u
 		out.Write("\tprev = frac(prev * (255.0f/256.0f)) * (256.0f/255.0f);\n");
 
 	AlphaTest::TEST_RESULT Pretest = bpmem.alpha_test.TestResult();
-	SetUidField(Pretest, Pretest);
+	uid_data.Pretest = Pretest;
 	if (Pretest == AlphaTest::UNDETERMINED)
-		WriteAlphaTest<T>(out, ApiType, dstAlphaMode, per_pixel_depth);
+		WriteAlphaTest<T>(out, uid_data, ApiType, dstAlphaMode, per_pixel_depth);
 
 	
 	// the screen space depth value = far z + (clip z / clip w) * z range
@@ -619,9 +621,9 @@ void GeneratePixelShader(T& out, DSTALPHA_MODE dstAlphaMode, API_TYPE ApiType, u
 	}
 
 	// Note: depth textures are disabled if early depth test is enabled
-	SetUidField(ztex.op, bpmem.ztex2.op);
-	SetUidField(per_pixel_depth, per_pixel_depth);
-	SetUidField(fog.fsel, bpmem.fog.c_proj_fsel.fsel);
+	uid_data.ztex.op = bpmem.ztex2.op;
+	uid_data.per_pixel_depth = per_pixel_depth;
+	uid_data.fog.fsel = bpmem.fog.c_proj_fsel.fsel;
 
 	// depth texture can safely be ignored if the result won't be written to the depth buffer (early_ztest) and isn't used for fog either
 	bool skip_ztexture = !per_pixel_depth && !bpmem.fog.c_proj_fsel.fsel;
@@ -650,7 +652,7 @@ void GeneratePixelShader(T& out, DSTALPHA_MODE dstAlphaMode, API_TYPE ApiType, u
 	}
 	else
 	{
-		WriteFog<T>(out);
+		WriteFog<T>(out, uid_data);
 		out.Write("\tocol0 = prev;\n");
 	}
 
@@ -666,8 +668,9 @@ void GeneratePixelShader(T& out, DSTALPHA_MODE dstAlphaMode, API_TYPE ApiType, u
 	}
 	
 	out.Write("}\n");
-///	if (text[sizeof(text) - 1] != 0x7C)
-///		PanicAlert("PixelShader generator - buffer too small, canary has been eaten!");
+
+	if (text[sizeof(text) - 1] != 0x7C)
+		PanicAlert("PixelShader generator - buffer too small, canary has been eaten!");
 
 	if (out.GetBuffer() != NULL)
 		setlocale(LC_NUMERIC, ""); // restore locale
@@ -720,7 +723,7 @@ static const char *TEVCMPAlphaOPTable[16] =
 
 
 template<class T>
-static void WriteStage(T& out, int n, API_TYPE ApiType)
+static void WriteStage(T& out, pixel_shader_uid_data& uid_data, int n, API_TYPE ApiType)
 {
 	int texcoord = bpmem.tevorders[n/2].getTexCoord(n&1);
 	bool bHasTexCoord = (u32)texcoord < bpmem.genMode.numtexgens;
@@ -732,14 +735,14 @@ static void WriteStage(T& out, int n, API_TYPE ApiType)
 
 	out.Write("// TEV stage %d\n", n);
 
-	OR_UidField(bHasIndStage, bHasIndStage << n);
-	if (n < 8) { OR_UidField(tevorders_n_texcoord1, texcoord << (3 * n)); }
-	else OR_UidField(tevorders_n_texcoord2, texcoord << (3 * n - 24));
+	uid_data.bHasIndStage |= bHasIndStage << n;
+	if (n < 8) { uid_data.tevorders_n_texcoord1 |= texcoord << (3 * n); }
+	else uid_data.tevorders_n_texcoord2 |= texcoord << (3 * n - 24);
 	if (bHasIndStage)
 	{
-		OR_UidField(tevind_n_bs, bpmem.tevind[n].bs << (2*n));
-		OR_UidField(tevind_n_bt, bpmem.tevind[n].bt << (2*n));
-		OR_UidField(tevind_n_fmt, bpmem.tevind[n].fmt << (2*n));
+		uid_data.tevind_n_bs |= bpmem.tevind[n].bs << (2*n);
+		uid_data.tevind_n_bt |= bpmem.tevind[n].bt << (2*n);
+		uid_data.tevind_n_fmt |= bpmem.tevind[n].fmt << (2*n);
 
 		out.Write("// indirect op\n");
 		// perform the indirect op on the incoming regular coordinates using indtex%d as the offset coords
@@ -754,14 +757,14 @@ static void WriteStage(T& out, int n, API_TYPE ApiType)
 		out.Write("float3 indtevcrd%d = indtex%d * %s;\n", n, bpmem.tevind[n].bt, tevIndFmtScale[bpmem.tevind[n].fmt]);
 
 		// bias
-		if (n < 8) { OR_UidField(tevind_n_bias1, bpmem.tevind[n].bias << (3*n)); } /// XXX: brackets?
-		else OR_UidField(tevind_n_bias2, bpmem.tevind[n].bias << (3*n - 24));
+		if (n < 8) { uid_data.tevind_n_bias1 |= bpmem.tevind[n].bias << (3*n); } /// XXX: brackets?
+		else uid_data.tevind_n_bias2 |= bpmem.tevind[n].bias << (3*n - 24);
 		if (bpmem.tevind[n].bias != ITB_NONE )
 			out.Write("indtevcrd%d.%s += %s;\n", n, tevIndBiasField[bpmem.tevind[n].bias], tevIndBiasAdd[bpmem.tevind[n].fmt]);
 
 		// multiply by offset matrix and scale
-		if (n < 8) { OR_UidField(tevind_n_mid1, bpmem.tevind[n].mid << (4*n)); } /// XXX: brackets?
-		else OR_UidField(tevind_n_mid2, bpmem.tevind[n].mid << (4*n - 32));
+		if (n < 8) { uid_data.tevind_n_mid1 |= bpmem.tevind[n].mid << (4*n); } /// XXX: brackets?
+		else uid_data.tevind_n_mid2 |= bpmem.tevind[n].mid << (4*n - 32);
 		if (bpmem.tevind[n].mid != 0)
 		{
 			if (bpmem.tevind[n].mid <= 3)
@@ -795,12 +798,12 @@ static void WriteStage(T& out, int n, API_TYPE ApiType)
 		// Wrapping
 		// ---------
 
-		if (n < 8) { OR_UidField(tevind_n_sw1, bpmem.tevind[n].sw << (3 * n)); }
-		else OR_UidField(tevind_n_sw2, bpmem.tevind[n].sw << (3 * n - 24));
-		if (n < 8) { OR_UidField(tevind_n_tw1, bpmem.tevind[n].tw << (3 * n)); }
-		else OR_UidField(tevind_n_tw2, bpmem.tevind[n].tw << (3 * n - 24));
+		if (n < 8) { uid_data.tevind_n_sw1 |= bpmem.tevind[n].sw << (3 * n); }
+		else uid_data.tevind_n_sw2 |= bpmem.tevind[n].sw << (3 * n - 24);
+		if (n < 8) { uid_data.tevind_n_tw1 |= bpmem.tevind[n].tw << (3 * n); }
+		else uid_data.tevind_n_tw2 |= bpmem.tevind[n].tw << (3 * n - 24);
 
-		OR_UidField(tevind_n_fb_addprev, bpmem.tevind[n].fb_addprev << n);
+		uid_data.tevind_n_fb_addprev |= bpmem.tevind[n].fb_addprev << n;
 
 		// wrap S
 		if (bpmem.tevind[n].sw == ITW_OFF)
@@ -827,8 +830,8 @@ static void WriteStage(T& out, int n, API_TYPE ApiType)
 	TevStageCombiner::ColorCombiner &cc = bpmem.combiners[n].colorC;
 	TevStageCombiner::AlphaCombiner &ac = bpmem.combiners[n].alphaC;
 
-	SetUidField(combiners[n].colorC.hex, cc.hex&0xFFFFFF);
-	SetUidField(combiners[n].alphaC.hex, ac.hex&0xFFFFFF);
+	uid_data.combiners[n].colorC.hex = cc.hex & 0xFFFFFF;
+	uid_data.combiners[n].alphaC.hex = ac.hex & 0xFFFFFF;
 
 	if(cc.a == TEVCOLORARG_RASA || cc.a == TEVCOLORARG_RASC
 		|| cc.b == TEVCOLORARG_RASA || cc.b == TEVCOLORARG_RASC
@@ -838,10 +841,10 @@ static void WriteStage(T& out, int n, API_TYPE ApiType)
 		|| ac.c == TEVALPHAARG_RASA || ac.d == TEVALPHAARG_RASA)
 	{
 		const int i = bpmem.combiners[n].alphaC.rswap;
-		OR_UidField(tevksel_n_swap, bpmem.tevksel[i*2  ].swap1 << (i*2));
-		OR_UidField(tevksel_n_swap, bpmem.tevksel[i*2+1].swap1 << (i*2 + 1));
-		OR_UidField(tevksel_n_swap, bpmem.tevksel[i*2  ].swap2 << (i*2 + 16));
-		OR_UidField(tevksel_n_swap, bpmem.tevksel[i*2+1].swap2 << (i*2 + 17));
+		uid_data.tevksel_n_swap |= bpmem.tevksel[i*2  ].swap1 << (i*2);
+		uid_data.tevksel_n_swap |= bpmem.tevksel[i*2+1].swap1 << (i*2 + 1);
+		uid_data.tevksel_n_swap |= bpmem.tevksel[i*2  ].swap2 << (i*2 + 16);
+		uid_data.tevksel_n_swap |= bpmem.tevksel[i*2+1].swap2 << (i*2 + 17);
 
 		char *rasswap = swapModeTable[bpmem.combiners[n].alphaC.rswap];
 		out.Write("rastemp = %s.%s;\n", tevRasTable[bpmem.tevorders[n / 2].getColorChan(n & 1)], rasswap);
@@ -861,10 +864,10 @@ static void WriteStage(T& out, int n, API_TYPE ApiType)
 		}
 
 		const int i = bpmem.combiners[n].alphaC.tswap;
-		OR_UidField(tevksel_n_swap, bpmem.tevksel[i*2  ].swap1 << (i*2));
-		OR_UidField(tevksel_n_swap, bpmem.tevksel[i*2+1].swap1 << (i*2 + 1));
-		OR_UidField(tevksel_n_swap, bpmem.tevksel[i*2  ].swap2 << (i*2 + 16));
-		OR_UidField(tevksel_n_swap, bpmem.tevksel[i*2+1].swap2 << (i*2 + 17));
+		uid_data.tevksel_n_swap |= bpmem.tevksel[i*2  ].swap1 << (i*2);
+		uid_data.tevksel_n_swap |= bpmem.tevksel[i*2+1].swap1 << (i*2 + 1);
+		uid_data.tevksel_n_swap |= bpmem.tevksel[i*2  ].swap2 << (i*2 + 16);
+		uid_data.tevksel_n_swap |= bpmem.tevksel[i*2+1].swap2 << (i*2 + 17);
 
 		char *texswap = swapModeTable[bpmem.combiners[n].alphaC.tswap];
 		int texmap = bpmem.tevorders[n/2].getTexMap(n&1);
@@ -1116,7 +1119,7 @@ static const char *tevAlphaFunclogicTable[] =
 };
 
 template<class T>
-static void WriteAlphaTest(T& out, API_TYPE ApiType, DSTALPHA_MODE dstAlphaMode, bool per_pixel_depth)
+static void WriteAlphaTest(T& out, pixel_shader_uid_data& uid_data, API_TYPE ApiType, DSTALPHA_MODE dstAlphaMode, bool per_pixel_depth)
 {
 	static const char *alphaRef[2] =
 	{
@@ -1129,9 +1132,9 @@ static void WriteAlphaTest(T& out, API_TYPE ApiType, DSTALPHA_MODE dstAlphaMode,
 	// using discard then return works the same in cg and dx9 but not in dx11
 	out.Write("\tif(!( ");
 
-	SetUidField(alpha_test.comp0, bpmem.alpha_test.comp0);
-	SetUidField(alpha_test.logic, bpmem.alpha_test.comp1);
-	SetUidField(alpha_test.logic, bpmem.alpha_test.logic);
+	uid_data.alpha_test.comp0 = bpmem.alpha_test.comp0;
+	uid_data.alpha_test.logic = bpmem.alpha_test.comp1;
+	uid_data.alpha_test.logic = bpmem.alpha_test.logic;
 
 	// Lookup the first component from the alpha function table
 	int compindex = bpmem.alpha_test.comp0;
@@ -1160,7 +1163,7 @@ static void WriteAlphaTest(T& out, API_TYPE ApiType, DSTALPHA_MODE dstAlphaMode,
 	// when the alpha test fail. This is not a correct implementation because
 	// even if the depth test fails the fragment could be alpha blended, but
 	// we don't have a choice.
-	SetUidField(alpha_test.use_zcomploc_hack, bpmem.zcontrol.early_ztest && bpmem.zmode.updateenable);
+	uid_data.alpha_test.use_zcomploc_hack = bpmem.zcontrol.early_ztest && bpmem.zmode.updateenable;
 	if (!(bpmem.zcontrol.early_ztest && bpmem.zmode.updateenable))
 	{
 		out.Write("\t\tdiscard;\n");
@@ -1184,13 +1187,13 @@ static const char *tevFogFuncsTable[] =
 };
 
 template<class T>
-static void WriteFog(T& out)
+static void WriteFog(T& out, pixel_shader_uid_data& uid_data)
 {
-	SetUidField(fog.fsel, bpmem.fog.c_proj_fsel.fsel);
+	uid_data.fog.fsel = bpmem.fog.c_proj_fsel.fsel;
 	if(bpmem.fog.c_proj_fsel.fsel == 0)
 		return; // no Fog
 
-	SetUidField(fog.proj, bpmem.fog.c_proj_fsel.proj);
+	uid_data.fog.proj = bpmem.fog.c_proj_fsel.proj;
 
 	out.SetConstantsUsed(C_FOG, C_FOG+1);
 	if (bpmem.fog.c_proj_fsel.proj == 0)
@@ -1209,7 +1212,7 @@ static void WriteFog(T& out)
 	// x_adjust = sqrt((x-center)^2 + k^2)/k
 	// ze *= x_adjust
 	// this is completely theoretical as the real hardware seems to use a table intead of calculating the values.
-	SetUidField(fog.RangeBaseEnabled, bpmem.fogRange.Base.Enabled);
+	uid_data.fog.RangeBaseEnabled = bpmem.fogRange.Base.Enabled;
 	if(bpmem.fogRange.Base.Enabled)
 	{
 		out.SetConstantsUsed(C_FOG+2, C_FOG+2);
diff --git a/Source/Core/VideoCommon/Src/VertexShaderGen.cpp b/Source/Core/VideoCommon/Src/VertexShaderGen.cpp
index 869b84a4ed..5ed1a73569 100644
--- a/Source/Core/VideoCommon/Src/VertexShaderGen.cpp
+++ b/Source/Core/VideoCommon/Src/VertexShaderGen.cpp
@@ -83,14 +83,15 @@ extern const char *WriteLocation(API_TYPE api_type);
 template<class T>
 void GenerateVertexShader(T& out, u32 components, API_TYPE api_type)
 {
-#undef SetUidField
-#define SetUidField(name, value) if (&out.GetUidData() != NULL) {out.GetUidData().name = value; };
+	// Non-uid template parameters will write to the dummy data (=> gets optimized out)
+	vertex_shader_uid_data dummy_data;
+	vertex_shader_uid_data& uid_data = (&out.GetUidData() != NULL) ? out.GetUidData() : dummy_data;
 
 	out.SetBuffer(text);
 	if (out.GetBuffer() != NULL)
 		setlocale(LC_NUMERIC, "C"); // Reset locale for compilation
 
-//	text[sizeof(text) - 1] = 0x7C;  // canary
+	text[sizeof(text) - 1] = 0x7C;  // canary
 
 	_assert_(bpmem.genMode.numtexgens == xfregs.numTexGen.numTexGens);
 	_assert_(bpmem.genMode.numcolchans == xfregs.numChan.numColorChans);
@@ -122,8 +123,8 @@ void GenerateVertexShader(T& out, u32 components, API_TYPE api_type)
 
 	GenerateVSOutputStruct(out, components, api_type);
 
-	SetUidField(numTexGens, xfregs.numTexGen.numTexGens);
-	SetUidField(components, components);
+	uid_data.numTexGens = xfregs.numTexGen.numTexGens;
+	uid_data.components = components;
 
 	if(api_type == API_OPENGL)
 	{
@@ -262,7 +263,7 @@ void GenerateVertexShader(T& out, u32 components, API_TYPE api_type)
 			"float3 ldir, h;\n"
 			"float dist, dist2, attn;\n");
 
-	SetUidField(numColorChans, xfregs.numChan.numColorChans);
+	uid_data.numColorChans = xfregs.numChan.numColorChans;
 	if (xfregs.numChan.numColorChans == 0)
 	{
 		if (components & VB_HAS_COL0)
@@ -272,7 +273,7 @@ void GenerateVertexShader(T& out, u32 components, API_TYPE api_type)
 	}
 
 	// TODO: This probably isn't necessary if pixel lighting is enabled.
-	GenerateLightingShader<T,VertexShaderUid>(out, components, I_MATERIALS, I_LIGHTS, "color", "o.colors_");
+	GenerateLightingShader<T,vertex_shader_uid_data>(out, uid_data, components, I_MATERIALS, I_LIGHTS, "color", "o.colors_");
 
 	if (xfregs.numChan.numColorChans < 2)
 	{
@@ -297,7 +298,7 @@ void GenerateVertexShader(T& out, u32 components, API_TYPE api_type)
 
 		out.Write("{\n");
 		out.Write("coord = float4(0.0f, 0.0f, 1.0f, 1.0f);\n");
-		SetUidField(texMtxInfo[i].sourcerow, xfregs.texMtxInfo[i].sourcerow);
+		uid_data.texMtxInfo[i].sourcerow = xfregs.texMtxInfo[i].sourcerow;
 		switch (texinfo.sourcerow) {
 		case XF_SRCGEOM_INROW:
 			_assert_( texinfo.inputform == XF_TEXINPUT_ABC1 );
@@ -332,21 +333,21 @@ void GenerateVertexShader(T& out, u32 components, API_TYPE api_type)
 		}
 
 		// first transformation
-		SetUidField(texMtxInfo[i].texgentype, xfregs.texMtxInfo[i].texgentype);
+		uid_data.texMtxInfo[i].texgentype = xfregs.texMtxInfo[i].texgentype;
 		switch (texinfo.texgentype) {
 			case XF_TEXGEN_EMBOSS_MAP: // calculate tex coords into bump map
 
 				if (components & (VB_HAS_NRM1|VB_HAS_NRM2)) {
 					// transform the light dir into tangent space
-					SetUidField(texMtxInfo[i].embosslightshift, xfregs.texMtxInfo[i].embosslightshift);
-					SetUidField(texMtxInfo[i].embosssourceshift, xfregs.texMtxInfo[i].embosssourceshift);
+					uid_data.texMtxInfo[i].embosslightshift = xfregs.texMtxInfo[i].embosslightshift;
+					uid_data.texMtxInfo[i].embosssourceshift = xfregs.texMtxInfo[i].embosssourceshift;
 					out.Write("ldir = normalize(" I_LIGHTS"[%d].pos.xyz - pos.xyz);\n", texinfo.embosslightshift);
 					out.Write("o.tex%d.xyz = o.tex%d.xyz + float3(dot(ldir, _norm1), dot(ldir, _norm2), 0.0f);\n", i, texinfo.embosssourceshift);
 				}
 				else
 				{
 					_assert_(0); // should have normals
-					SetUidField(texMtxInfo[i].embosssourceshift, xfregs.texMtxInfo[i].embosssourceshift);
+					uid_data.texMtxInfo[i].embosssourceshift = xfregs.texMtxInfo[i].embosssourceshift;
 					out.Write("o.tex%d.xyz = o.tex%d.xyz;\n", i, texinfo.embosssourceshift);
 				}
 
@@ -361,7 +362,7 @@ void GenerateVertexShader(T& out, u32 components, API_TYPE api_type)
 				break;
 			case XF_TEXGEN_REGULAR:
 			default:
-				SetUidField(texMtxInfo[i].projection, xfregs.texMtxInfo[i].projection);
+				uid_data.texMtxInfo[i].projection = xfregs.texMtxInfo[i].projection;
 				if (components & (VB_HAS_TEXMTXIDX0<<i))
 				{
 					out.Write("int tmp = int(tex%d.z);\n", i);
@@ -380,11 +381,11 @@ void GenerateVertexShader(T& out, u32 components, API_TYPE api_type)
 				break;
 		}
 
-		SetUidField(dualTexTrans.enabled, xfregs.dualTexTrans.enabled);
+		uid_data.dualTexTrans.enabled = xfregs.dualTexTrans.enabled;
 		if (xfregs.dualTexTrans.enabled && texinfo.texgentype == XF_TEXGEN_REGULAR) { // only works for regular tex gen types?
 			const PostMtxInfo& postInfo = xfregs.postMtxInfo[i];
 
-			SetUidField(postMtxInfo[i].index, xfregs.postMtxInfo[i].index);
+			uid_data.postMtxInfo[i].index = xfregs.postMtxInfo[i].index;
 			int postidx = postInfo.index;
 			out.Write("float4 P0 = " I_POSTTRANSFORMMATRICES"[%d];\n"
 				"float4 P1 = " I_POSTTRANSFORMMATRICES"[%d];\n"
@@ -401,7 +402,7 @@ void GenerateVertexShader(T& out, u32 components, API_TYPE api_type)
 			}
 			else
 			{
-				SetUidField(postMtxInfo[i].normalize, xfregs.postMtxInfo[i].normalize);
+				uid_data.postMtxInfo[i].normalize = xfregs.postMtxInfo[i].normalize;
 				if (postInfo.normalize)
 					out.Write("o.tex%d.xyz = normalize(o.tex%d.xyz);\n", i, i);
 
@@ -517,8 +518,9 @@ void GenerateVertexShader(T& out, u32 components, API_TYPE api_type)
 	else
 		out.Write("return o;\n}\n");
 
-///	if (text[sizeof(text) - 1] != 0x7C)
-///		PanicAlert("VertexShader generator - buffer too small, canary has been eaten!");
+	if (text[sizeof(text) - 1] != 0x7C)
+		PanicAlert("VertexShader generator - buffer too small, canary has been eaten!");
+
 	if (out.GetBuffer() != NULL)
 		setlocale(LC_NUMERIC, ""); // restore locale
 }