1 files changed, 21 insertions, 36 deletions

diff --git a/src/video_core/pica.h b/src/video_core/pica.h
index 4ab4f1f40..731540b99 100644
--- a/src/video_core/pica.h
+++ b/src/video_core/pica.h
@@ -99,7 +99,8 @@ struct Regs {
             TEXCOORD1_U = 14,
             TEXCOORD1_V = 15,
 
-            // TODO: Not verified
+            TEXCOORD0_W = 16,
+
             VIEW_X = 18,
             VIEW_Y = 19,
             VIEW_Z = 20,
@@ -871,7 +872,7 @@ struct Regs {
         LightSrc light[8];
         LightColor global_ambient; // Emission + (material.ambient * lighting.ambient)
         INSERT_PADDING_WORDS(0x1);
-        BitField<0, 3, u32> num_lights; // Number of enabled lights - 1
+        BitField<0, 3, u32> max_light_index; // Number of enabled lights - 1
 
         union {
             BitField<2, 2, LightingFresnelSelector> fresnel_selector;
@@ -1048,7 +1049,7 @@ struct Regs {
             BitField<48, 12, u64> attribute_mask;
 
             // number of total attributes minus 1
-            BitField<60, 4, u64> num_extra_attributes;
+            BitField<60, 4, u64> max_attribute_index;
         };
 
         inline VertexAttributeFormat GetFormat(int n) const {
@@ -1079,7 +1080,7 @@ struct Regs {
         }
 
         inline int GetNumTotalAttributes() const {
-            return (int)num_extra_attributes + 1;
+            return (int)max_attribute_index + 1;
         }
 
         // Attribute loaders map the source vertex data to input attributes
@@ -1179,7 +1180,12 @@ struct Regs {
         }
     } command_buffer;
 
-    INSERT_PADDING_WORDS(0x07);
+    INSERT_PADDING_WORDS(4);
+
+    /// Number of input attributes to the vertex shader minus 1
+    BitField<0, 4, u32> max_input_attrib_index;
+
+    INSERT_PADDING_WORDS(2);
 
     enum class GPUMode : u32 {
         Drawing = 0,
@@ -1217,42 +1223,21 @@ struct Regs {
 
         union {
             // Number of input attributes to shader unit - 1
-            BitField<0, 4, u32> num_input_attributes;
+            BitField<0, 4, u32> max_input_attribute_index;
         };
 
         // Offset to shader program entry point (in words)
         BitField<0, 16, u32> main_offset;
 
-        union {
-            BitField<0, 4, u64> attribute0_register;
-            BitField<4, 4, u64> attribute1_register;
-            BitField<8, 4, u64> attribute2_register;
-            BitField<12, 4, u64> attribute3_register;
-            BitField<16, 4, u64> attribute4_register;
-            BitField<20, 4, u64> attribute5_register;
-            BitField<24, 4, u64> attribute6_register;
-            BitField<28, 4, u64> attribute7_register;
-            BitField<32, 4, u64> attribute8_register;
-            BitField<36, 4, u64> attribute9_register;
-            BitField<40, 4, u64> attribute10_register;
-            BitField<44, 4, u64> attribute11_register;
-            BitField<48, 4, u64> attribute12_register;
-            BitField<52, 4, u64> attribute13_register;
-            BitField<56, 4, u64> attribute14_register;
-            BitField<60, 4, u64> attribute15_register;
-
-            int GetRegisterForAttribute(int attribute_index) const {
-                u64 fields[] = {
-                    attribute0_register,  attribute1_register,  attribute2_register,
-                    attribute3_register,  attribute4_register,  attribute5_register,
-                    attribute6_register,  attribute7_register,  attribute8_register,
-                    attribute9_register,  attribute10_register, attribute11_register,
-                    attribute12_register, attribute13_register, attribute14_register,
-                    attribute15_register,
-                };
-                return (int)fields[attribute_index];
-            }
-        } input_register_map;
+        /// Maps input attributes to registers. 4-bits per attribute, specifying a register index
+        u32 input_attribute_to_register_map_low;
+        u32 input_attribute_to_register_map_high;
+
+        unsigned int GetRegisterForAttribute(unsigned int attribute_index) const {
+            u64 map = ((u64)input_attribute_to_register_map_high << 32) |
+                      (u64)input_attribute_to_register_map_low;
+            return (map >> (attribute_index * 4)) & 0b1111;
+        }
 
         BitField<0, 16, u32> output_mask;