1 files changed, 56 insertions, 0 deletions

diff --git a/src/video_core/pica_types.h b/src/video_core/pica_types.h
index de798aa81..a34421c5d 100644
--- a/src/video_core/pica_types.h
+++ b/src/video_core/pica_types.h
@@ -121,4 +121,60 @@ private:
 
 static_assert(sizeof(float24) == sizeof(float), "Shader JIT assumes float24 is implemented as a 32-bit float");
 
+struct float16 {
+    // 10 bit mantissa, 5 bit exponent, 1 bit sign
+    // TODO: No idea if this works as intended
+    static float16 FromRawFloat16(u32 hex) {
+        float16 ret;
+        if ((hex & 0xFFFF) == 0) {
+            ret.value = 0;
+        } else {
+            u32 mantissa = hex & 0x3FF;
+            u32 exponent = (hex >> 10) & 0x1F;
+            u32 sign = (hex >> 15) & 1;
+            ret.value = std::pow(2.0f, (float)exponent - 15.0f) * (1.0f + mantissa * std::pow(2.0f, -10.f));
+            if (sign)
+                ret.value = -ret.value;
+        }
+        return ret;
+    }
+
+    float ToFloat32() const {
+        return value;
+    }
+
+private:
+    // Stored as a regular float, merely for convenience
+    // TODO: Perform proper arithmetic on this!
+    float value;
+};
+
+struct float20 {
+    // 12 bit mantissa, 7 bit exponent, 1 bit sign
+    // TODO: No idea if this works as intended
+    static float20 FromRawFloat20(u32 hex) {
+        float20 ret;
+        if ((hex & 0xFFFFF) == 0) {
+            ret.value = 0;
+        } else {
+            u32 mantissa = hex & 0xFFF;
+            u32 exponent = (hex >> 12) & 0x7F;
+            u32 sign = (hex >> 19) & 1;
+            ret.value = std::pow(2.0f, (float)exponent - 63.0f) * (1.0f + mantissa * std::pow(2.0f, -12.f));
+            if (sign)
+                ret.value = -ret.value;
+        }
+        return ret;
+    }
+
+    float ToFloat32() const {
+        return value;
+    }
+
+private:
+    // Stored as a regular float, merely for convenience
+    // TODO: Perform proper arithmetic on this!
+    float value;
+};
+
 } // namespace Pica