unai: Use 8.8 RGB triplet format for gouraud shading

[pcsx_rearmed.git] / plugins / gpu_unai / gpu_unai.h

diff --git a/plugins/gpu_unai/gpu_unai.h b/plugins/gpu_unai/gpu_unai.h
index 4ab5a52..3306202 100644 (file)
--- a/plugins/gpu_unai/gpu_unai.h
+++ b/plugins/gpu_unai/gpu_unai.h
@@ -53,6 +53,14 @@
 #define u32 uint32_t
 #define s32 int32_t
 #define s64 int64_t
+#define u64 uint64_t
+
+typedef union {
+       struct {
+               u16 r, g, b;
+       } c;
+       u64 raw;
+} gcol_t;
 
 typedef struct {
         u32 v;
@@ -253,11 +261,12 @@ struct gpu_unai_t {
        s32 u_inc, v_inc;
 
        // Color for Gouraud-shaded prims
+       // Fixed-pt 8.8 rgb triplet
        // Packed fixed-pt 8.3:8.3:8.2 rgb triplet
-       //  layout:  rrrrrrrrXXXggggggggXXXbbbbbbbbXX
-       //           ^ bit 31                       ^ bit 0
-       u32 gCol;
-       u32 gInc;          // Increment along scanline for gCol
+       //  layout:  ccccccccXXXXXXXX for c in [r, g, b]
+       //           ^ bit 16
+       gcol_t gCol;
+       gcol_t gInc;       // Increment along scanline for gCol
 
        // Color for flat-shaded, texture-blended prims
        u8  r5, g5, b5;    // 5-bit light for undithered prims