diff --git a/libctru/include/3ds/gpu/enums.h b/libctru/include/3ds/gpu/enums.h
index 2307a96..af6f0ad 100644
--- a/libctru/include/3ds/gpu/enums.h
+++ b/libctru/include/3ds/gpu/enums.h
@@ -8,10 +8,18 @@
 #define GPU_TEXTURE_MAG_FILTER(v) (((v)&0x1)<<1)
 /// Creates a texture minification filter parameter from a @ref GPU_TEXTURE_FILTER_PARAM
 #define GPU_TEXTURE_MIN_FILTER(v) (((v)&0x1)<<2)
+/// Creates a texture mipmap filter parameter from a @ref GPU_TEXTURE_FILTER_PARAM
+#define GPU_TEXTURE_MIP_FILTER(v) (((v)&0x1)<<24)
 /// Creates a texture wrap S parameter from a @ref GPU_TEXTURE_WRAP_PARAM
 #define GPU_TEXTURE_WRAP_S(v)     (((v)&0x3)<<12)
 /// Creates a texture wrap T parameter from a @ref GPU_TEXTURE_WRAP_PARAM
 #define GPU_TEXTURE_WRAP_T(v)     (((v)&0x3)<<8)
+/// Creates a texture mode parameter from a @ref GPU_TEXTURE_MODE_PARAM
+#define GPU_TEXTURE_MODE(v)       (((v)&0x7)<<28)
+/// Texture parameter indicating ETC1 texture.
+#define GPU_TEXTURE_ETC1_PARAM    BIT(5)
+/// Texture parameter indicating shadow texture.
+#define GPU_TEXTURE_SHADOW_PARAM  BIT(20)
 
 /// Creates a combiner buffer write configuration.
 #define GPU_TEV_BUFFER_WRITE_CONFIG(stage0, stage1, stage2, stage3) ((stage0) | ((stage1) << 1) | ((stage2) << 2) | ((stage3) << 3))
@@ -69,6 +77,60 @@ typedef enum
 	GPU_ETC1A4   = 0xC, ///< ETC1 texture compression + 4-bit Alpha
 } GPU_TEXCOLOR;
 
+/// Procedural texture clamp modes.
+typedef enum
+{
+	GPU_PT_CLAMP_TO_ZERO   = 0, ///< Clamp to zero.
+	GPU_PT_CLAMP_TO_EDGE   = 1, ///< Clamp to edge.
+	GPU_PT_REPEAT          = 2, ///< Symmetrical repeat.
+	GPU_PT_MIRRORED_REPEAT = 3, ///< Mirrored repeat.
+	GPU_PT_PULSE           = 4, ///< Pulse.
+} GPU_PROCTEX_CLAMP;
+
+/// Procedural texture mapping functions.
+typedef enum
+{
+	GPU_PT_U     = 0, ///< U
+	GPU_PT_U2    = 1, ///< U2
+	GPU_PT_V     = 2, ///< V
+	GPU_PT_V2    = 3, ///< V2
+	GPU_PT_ADD   = 4, ///< U+V
+	GPU_PT_ADD2  = 5, ///< U2+V2
+	GPU_PT_SQRT2 = 6, ///< sqrt(U2+V2)
+	GPU_PT_MIN   = 7, ///< min
+	GPU_PT_MAX   = 8, ///< max
+	GPU_PT_RMAX  = 9, ///< rmax
+} GPU_PROCTEX_MAPFUNC;
+
+/// Procedural texture shift values.
+typedef enum
+{
+	GPU_PT_NONE = 0, ///< No shift.
+	GPU_PT_ODD  = 1, ///< Odd shift.
+	GPU_PT_EVEN = 2, ///< Even shift.
+} GPU_PROCTEX_SHIFT;
+
+/// Procedural texture filter values.
+typedef enum
+{
+	GPU_PT_NEAREST             = 0, ///< Nearest-neighbor
+	GPU_PT_LINEAR              = 1, ///< Linear interpolation
+	GPU_PT_NEAREST_MIP_NEAREST = 2, ///< Nearest-neighbor with mipmap using nearest-neighbor
+	GPU_PT_LINEAR_MIP_NEAREST  = 3, ///< Linear interpolation with mipmap using nearest-neighbor
+	GPU_PT_NEAREST_MIP_LINEAR  = 4, ///< Nearest-neighbor with mipmap using linear interpolation
+	GPU_PT_LINEAR_MIP_LINEAR   = 5, ///< Linear interpolation with mipmap using linear interpolation
+} GPU_PROCTEX_FILTER;
+
+/// Procedural texture LUT IDs.
+typedef enum
+{
+	GPU_LUT_NOISE    = 0, ///< Noise table
+	GPU_LUT_RGBMAP   = 1, ///< RGB mapping function table
+	GPU_LUT_ALPHAMAP = 2, ///< Alpha mapping function table
+	GPU_LUT_COLOR    = 3, ///< Color table
+	GPU_LUT_COLORDIF = 4, ///< Color difference table
+} GPU_PROCTEX_LUTID;
+
 /// Supported color buffer formats.
 typedef enum
 {
diff --git a/libctru/include/3ds/gpu/registers.h b/libctru/include/3ds/gpu/registers.h
index f94600d..a17f0c2 100644
--- a/libctru/include/3ds/gpu/registers.h
+++ b/libctru/include/3ds/gpu/registers.h
@@ -182,22 +182,22 @@
 #define GPUREG_00A5 0x00A5                  ///< Unknown.
 #define GPUREG_00A6 0x00A6                  ///< Unknown.
 #define GPUREG_00A7 0x00A7                  ///< Unknown.
-#define GPUREG_TEXUNIT3_PROTEX0 0x00A8      ///< Unknown.
-#define GPUREG_TEXUNIT3_PROTEX1 0x00A9      ///< Unknown.
-#define GPUREG_TEXUNIT3_PROTEX2 0x00AA      ///< Unknown.
-#define GPUREG_TEXUNIT3_PROTEX3 0x00AB      ///< Unknown.
-#define GPUREG_TEXUNIT3_PROTEX4 0x00AC      ///< Unknown.
-#define GPUREG_TEXUNIT3_PROTEX5 0x00AD      ///< Unknown.
+#define GPUREG_TEXUNIT3_PROCTEX0 0x00A8     ///< Unknown.
+#define GPUREG_TEXUNIT3_PROCTEX1 0x00A9     ///< Unknown.
+#define GPUREG_TEXUNIT3_PROCTEX2 0x00AA     ///< Unknown.
+#define GPUREG_TEXUNIT3_PROCTEX3 0x00AB     ///< Unknown.
+#define GPUREG_TEXUNIT3_PROCTEX4 0x00A      ///< Unknown.
+#define GPUREG_TEXUNIT3_PROCTEX5 0x00D      ///< Unknown.
 #define GPUREG_00AE 0x00AE                  ///< Unknown.
-#define GPUREG_PROTEX_LUT 0x00AF            ///< Unknown.
-#define GPUREG_PROTEX_LUT_DATA0 0x00B0      ///< Unknown.
-#define GPUREG_PROTEX_LUT_DATA1 0x00B1      ///< Unknown.
-#define GPUREG_PROTEX_LUT_DATA2 0x00B2      ///< Unknown.
-#define GPUREG_PROTEX_LUT_DATA3 0x00B3      ///< Unknown.
-#define GPUREG_PROTEX_LUT_DATA4 0x00B4      ///< Unknown.
-#define GPUREG_PROTEX_LUT_DATA5 0x00B5      ///< Unknown.
-#define GPUREG_PROTEX_LUT_DATA6 0x00B6      ///< Unknown.
-#define GPUREG_PROTEX_LUT_DATA7 0x00B7      ///< Unknown.
+#define GPUREG_PROCTEX_LUT 0x00AF           ///< Unknown.
+#define GPUREG_PROCTEX_LUT_DATA0 0x00B0     ///< Unknown.
+#define GPUREG_PROCTEX_LUT_DATA1 0x00B1     ///< Unknown.
+#define GPUREG_PROCTEX_LUT_DATA2 0x00B2     ///< Unknown.
+#define GPUREG_PROCTEX_LUT_DATA3 0x00B3     ///< Unknown.
+#define GPUREG_PROCTEX_LUT_DATA4 0x00B4     ///< Unknown.
+#define GPUREG_PROCTEX_LUT_DATA5 0x00B5     ///< Unknown.
+#define GPUREG_PROCTEX_LUT_DATA6 0x00B6     ///< Unknown.
+#define GPUREG_PROCTEX_LUT_DATA7 0x00B7     ///< Unknown.
 #define GPUREG_00B8 0x00B8                  ///< Unknown.
 #define GPUREG_00B9 0x00B9                  ///< Unknown.
 #define GPUREG_00BA 0x00BA                  ///< Unknown.