diff --git a/GPU/GLES/GLES_GPU.cpp b/GPU/GLES/GLES_GPU.cpp
index e41f9c3fb9a0..3ea6d88e6e6c 100644
--- a/GPU/GLES/GLES_GPU.cpp
+++ b/GPU/GLES/GLES_GPU.cpp
@@ -93,7 +93,7 @@ static const CommandTableEntry commandTable[] = {
 	{GE_CMD_TEXSIZE6, FLAG_FLUSHBEFOREONCHANGE | FLAG_EXECUTEONCHANGE, &GLES_GPU::Execute_TexSizeN},
 	{GE_CMD_TEXSIZE7, FLAG_FLUSHBEFOREONCHANGE | FLAG_EXECUTEONCHANGE, &GLES_GPU::Execute_TexSizeN},
 	{GE_CMD_TEXFORMAT, FLAG_FLUSHBEFOREONCHANGE | FLAG_EXECUTEONCHANGE, &GLES_GPU::Execute_TexFormat},
-	{GE_CMD_TEXLEVEL, FLAG_EXECUTEONCHANGE},
+	{GE_CMD_TEXLEVEL, FLAG_EXECUTEONCHANGE, &GLES_GPU::Execute_TexLevel},
 	{GE_CMD_TEXADDR0, FLAG_FLUSHBEFOREONCHANGE | FLAG_EXECUTEONCHANGE, &GLES_GPU::Execute_TexAddr0},
 	{GE_CMD_TEXADDR1, FLAG_FLUSHBEFOREONCHANGE | FLAG_EXECUTEONCHANGE, &GLES_GPU::Execute_TexAddrN},
 	{GE_CMD_TEXADDR2, FLAG_FLUSHBEFOREONCHANGE | FLAG_EXECUTEONCHANGE, &GLES_GPU::Execute_TexAddrN},
@@ -1264,6 +1264,18 @@ void GLES_GPU::Execute_BlockTransferStart(u32 op, u32 diff) {
 	gstate_c.textureChanged = TEXCHANGE_UPDATED;
 }
 
+void GLES_GPU::Execute_TexLevel(u32 op, u32 diff) {
+	// I had hoped that this would let us avoid excessively flushing in Gran Turismo, but not so,
+	// as the game switches rapidly between modes 0 and 1.
+	/*
+	if (gstate.getTexLevelMode() == GE_TEXLEVEL_MODE_CONST) {
+		gstate.texlevel ^= diff;
+		Flush();
+		gstate.texlevel ^= diff;
+	}
+	*/
+	gstate_c.textureChanged |= TEXCHANGE_PARAMSONLY;
+}
 void GLES_GPU::ExecuteOpInternal(u32 op, u32 diff) {
 	u32 cmd = op >> 24;
 	u32 data = op & 0xFFFFFF;
@@ -1720,15 +1732,7 @@ void GLES_GPU::ExecuteOpInternal(u32 op, u32 diff) {
 #endif
 
 	case GE_CMD_TEXLEVEL:
-		// I had hoped that this would let us avoid excessively flushing in Gran Turismo, but not so,
-		// as the game switches rapidly between modes 0 and 1.
-		/*
-		if ((gstate.texlevel & 0x3) == 1) {
-			gstate.texlevel ^= diff;
-			Flush();
-			gstate.texlevel ^= diff;
-		}*/
-		gstate_c.textureChanged |= TEXCHANGE_PARAMSONLY;
+		Execute_TexLevel(op, diff);
 		break;
 
 	//////////////////////////////////////////////////////////////////
diff --git a/GPU/GLES/GLES_GPU.h b/GPU/GLES/GLES_GPU.h
index 1f44d42121be..2c7168c0ce12 100644
--- a/GPU/GLES/GLES_GPU.h
+++ b/GPU/GLES/GLES_GPU.h
@@ -127,6 +127,7 @@ class GLES_GPU : public GPUCommon {
 	void Execute_BoneMtxNum(u32 op, u32 diff);
 	void Execute_BoneMtxData(u32 op, u32 diff);
 	void Execute_BlockTransferStart(u32 op, u32 diff);
+	void Execute_TexLevel(u32 op, u32 diff);
 
 protected:
 	virtual void FastRunLoop(DisplayList &list);
diff --git a/GPU/GLES/TextureCache.cpp b/GPU/GLES/TextureCache.cpp
index 907641f05d72..8e4e8281c88d 100644
--- a/GPU/GLES/TextureCache.cpp
+++ b/GPU/GLES/TextureCache.cpp
@@ -504,15 +504,15 @@ void TextureCache::UpdateSamplingParams(TexCacheEntry &entry, bool force) {
 		float lodBias = (float)(int)(s8)((gstate.texlevel >> 16) & 0xFF) / 16.0f;
 		if (force || entry.lodBias != lodBias) {
 #ifndef USING_GLES2
-			int mode = gstate.texlevel & 0x3;
+			GETexLevelMode mode = gstate.getTexLevelMode();
 			switch (mode) {
-			case GE_TEXBIAS_MODE_AUTO:
+			case GE_TEXLEVEL_MODE_AUTO:
 				// TODO
 				break;
-			case GE_TEXBIAS_MODE_CONST:
+			case GE_TEXLEVEL_MODE_CONST:
 				glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_LOD_BIAS, lodBias);
 				break;
-			case GE_TEXBIAS_MODE_SLOPE:
+			case GE_TEXLEVEL_MODE_SLOPE:
 				// TODO
 				break;
 			}
diff --git a/GPU/GLES/TextureCache.h b/GPU/GLES/TextureCache.h
index aabf805b66f0..43688bd2c9a7 100644
--- a/GPU/GLES/TextureCache.h
+++ b/GPU/GLES/TextureCache.h
@@ -39,12 +39,6 @@ enum FramebufferNotification {
 	NOTIFY_FB_DESTROYED,
 };
 
-enum TextureLevelMode {
-	GE_TEXBIAS_MODE_AUTO = 0,
-	GE_TEXBIAS_MODE_CONST = 1,
-	GE_TEXBIAS_MODE_SLOPE = 2,
-};
-
 class TextureCache {
 public:
 	TextureCache();
diff --git a/GPU/GPUState.h b/GPU/GPUState.h
index 7933a91c3543..28a2a1d184af 100644
--- a/GPU/GPUState.h
+++ b/GPU/GPUState.h
@@ -292,6 +292,7 @@ struct GPUgstate
 	int getTextureWidth(int level) const { return 1 << (texsize[level] & 0xf);}
 	int getTextureHeight(int level) const { return 1 << ((texsize[level] >> 8) & 0xf);}
 	u16 getTextureDimension(int level) const { return  texsize[level] & 0xf0f;}
+	GETexLevelMode getTexLevelMode() const { return static_cast<GETexLevelMode>(texlevel & 0x3); }
 	bool isTextureMapEnabled() const { return textureMapEnable & 1; }
 	GETexFunc getTextureFunction() const { return static_cast<GETexFunc>(texfunc & 0x7); }
 	bool isColorDoublingEnabled() const { return (texfunc & 0x10000) != 0; }
diff --git a/GPU/ge_constants.h b/GPU/ge_constants.h
index 677697265c3d..556da8071d06 100644
--- a/GPU/ge_constants.h
+++ b/GPU/ge_constants.h
@@ -414,6 +414,12 @@ enum GETextureFormat
 	GE_TFMT_DXT5 = 10,
 };
 
+enum GETexLevelMode {
+	GE_TEXLEVEL_MODE_AUTO = 0,
+	GE_TEXLEVEL_MODE_CONST = 1,
+	GE_TEXLEVEL_MODE_SLOPE = 2,
+};
+
 enum GEMaterialColorSetting
 {
 	GE_MATERIALCOLOR_EMISSIVE = 0,