Use correct shared memory size (in words, not bytes)

Ryujinx.Graphics.Gpu/Engine/Compute.cs

@@ -21,7 +21,7 @@ namespace Ryujinx.Graphics.Gpu.Engine
             ulong shaderGpuVa = shaderBaseAddress.Pack() + (uint)dispatchParams.ShaderOffset;
 
             // Note: A size of 0 is also invalid, the size must be at least 1.
-            int sharedMemorySize = Math.Clamp(dispatchParams.SharedMemorySize & 0xffff, 1, _context.Capabilities.MaximumComputeSharedMemorySize);
+            int sharedMemorySize = Math.Clamp(dispatchParams.SharedMemorySize & 0xffff, 4, _context.Capabilities.MaximumComputeSharedMemorySize);
 
             ComputeShader cs = _shaderCache.GetComputeShader(
                 shaderGpuVa,

Ryujinx.Graphics.Gpu/Shader/ShaderCache.cs

@@ -212,7 +212,7 @@ namespace Ryujinx.Graphics.Gpu.Shader
 
             int[] codeCached = MemoryMarshal.Cast<byte, int>(code.Slice(0, program.Size)).ToArray();
 
-            program.Replace(DefineNames.SharedMemorySize, sharedMemorySize.ToString(CultureInfo.InvariantCulture));
+            program.Replace(DefineNames.SharedMemorySize, (sharedMemorySize / 4).ToString(CultureInfo.InvariantCulture));
 
             program.Replace(DefineNames.LocalSizeX, localSizeX.ToString(CultureInfo.InvariantCulture));
             program.Replace(DefineNames.LocalSizeY, localSizeY.ToString(CultureInfo.InvariantCulture));