Initial work

1 files changed, 104 insertions, 0 deletions

diff --git a/Ryujinx.Graphics.Shader/CodeGen/Glsl/NumberFormatter.cs b/Ryujinx.Graphics.Shader/CodeGen/Glsl/NumberFormatter.cs
new file mode 100644
index 00000000..2ec44277
--- /dev/null
+++ b/Ryujinx.Graphics.Shader/CodeGen/Glsl/NumberFormatter.cs
@@ -0,0 +1,104 @@
+using Ryujinx.Graphics.Shader.StructuredIr;
+using System;
+using System.Globalization;
+
+namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
+{
+    static class NumberFormatter
+    {
+        private const int MaxDecimal = 256;
+
+        public static bool TryFormat(int value, VariableType dstType, out string formatted)
+        {
+            if (dstType == VariableType.F32)
+            {
+                return TryFormatFloat(BitConverter.Int32BitsToSingle(value), out formatted);
+            }
+            else if (dstType == VariableType.S32)
+            {
+                formatted = FormatInt(value);
+            }
+            else if (dstType == VariableType.U32)
+            {
+                formatted = FormatUint((uint)value);
+            }
+            else if (dstType == VariableType.Bool)
+            {
+                formatted = value != 0 ? "true" : "false";
+            }
+            else
+            {
+                throw new ArgumentException($"Invalid variable type \"{dstType}\".");
+            }
+
+            return true;
+        }
+
+        public static string FormatFloat(float value)
+        {
+            if (!TryFormatFloat(value, out string formatted))
+            {
+                throw new ArgumentException("Failed to convert float value to string.");
+            }
+
+            return formatted;
+        }
+
+        public static bool TryFormatFloat(float value, out string formatted)
+        {
+            if (float.IsNaN(value) || float.IsInfinity(value))
+            {
+                formatted = null;
+
+                return false;
+            }
+
+            formatted = value.ToString("G9", CultureInfo.InvariantCulture);
+
+            if (!(formatted.Contains('.') ||
+                  formatted.Contains('e') ||
+                  formatted.Contains('E')))
+            {
+                formatted += ".0";
+            }
+
+            return true;
+        }
+
+        public static string FormatInt(int value, VariableType dstType)
+        {
+            if (dstType == VariableType.S32)
+            {
+                return FormatInt(value);
+            }
+            else if (dstType == VariableType.U32)
+            {
+                return FormatUint((uint)value);
+            }
+            else
+            {
+                throw new ArgumentException($"Invalid variable type \"{dstType}\".");
+            }
+        }
+
+        public static string FormatInt(int value)
+        {
+            if (value <= MaxDecimal && value >= -MaxDecimal)
+            {
+                return value.ToString(CultureInfo.InvariantCulture);
+            }
+
+            return "0x" + value.ToString("X", CultureInfo.InvariantCulture);
+        }
+
+        public static string FormatUint(uint value)
+        {
+            if (value <= MaxDecimal && value >= 0)
+            {
+                return value.ToString(CultureInfo.InvariantCulture) + "u";
+            }
+
+            return "0x" + value.ToString("X", CultureInfo.InvariantCulture) + "u";
+        }
+    }
+}
\ No newline at end of file