rendering tests fixed

2026-09-16 23:58:45 +03:00
parent 6fa3dea391
commit eeb13c3bd4
6 changed files with 159 additions and 120 deletions
@@ -0,0 +1,27 @@
+package generator
+
+import "encoding/binary"
+
+func sampleV210(buf []byte, width, x, y int) (yc, cb, cr uint32) {
+	pixel := y*width + x
+	offset := (pixel / 6) * 16
+	w0 := binary.LittleEndian.Uint32(buf[offset:])
+	w1 := binary.LittleEndian.Uint32(buf[offset+4:])
+	w2 := binary.LittleEndian.Uint32(buf[offset+8:])
+	w3 := binary.LittleEndian.Uint32(buf[offset+12:])
+
+	switch pixel % 6 {
+	case 0:
+		return (w0 >> 10) & 0x3FF, w0 & 0x3FF, (w0 >> 20) & 0x3FF
+	case 1:
+		return w1 & 0x3FF, w0 & 0x3FF, (w0 >> 20) & 0x3FF
+	case 2:
+		return (w1 >> 20) & 0x3FF, (w1 >> 10) & 0x3FF, w2 & 0x3FF
+	case 3:
+		return (w2 >> 10) & 0x3FF, (w1 >> 10) & 0x3FF, w2 & 0x3FF
+	case 4:
+		return w3 & 0x3FF, (w2 >> 20) & 0x3FF, (w3 >> 10) & 0x3FF
+	default:
+		return (w3 >> 20) & 0x3FF, (w2 >> 20) & 0x3FF, (w3 >> 10) & 0x3FF
+	}
+}