private Dictionary <string, ShaderVariable> ConvertToPushConstantDict(ShaderVariable[] pushConstants)
{
Dictionary <string, ShaderVariable> pushConstantDict = new Dictionary <string, ShaderVariable>();
for (int i = 0; i < pushConstants.Length; i++)
{
ShaderVariable pushConstant = pushConstants[i];
pushConstantDict[pushConstant.Name] = pushConstant;
}
return(pushConstantDict);
}
internal static List <ShaderVariable> Parse(IEnumerable <string> fields)
{
List <ShaderVariable> variables = new List <ShaderVariable>();
uint offset = 0;
for (int i = 0; i < fields.Count(); i++)
{
string variableLine = Util.KillDuplicateWhiteSpaces(fields.ElementAt(i)).Replace("[ ]", "[]");
if (string.IsNullOrEmpty(variableLine))
{
continue;
}
string[] segments = variableLine.Split(' ');
string name = segments[1];
string glslType = segments[0];
uint size = 0;
Type type;
if (Constants.GlslToNetType.ContainsKey(glslType))
{
type = Constants.GlslToNetType[glslType];
size = Constants.TypeToSize[type];
}
else
{
type = System.Reflection.Assembly.GetEntryAssembly().DefinedTypes.Where(n => n.Name == glslType).First();
size = (uint)Marshal.SizeOf(type);
}
ShaderVariable shaderVariable = new ShaderVariable(name, type)
{
Size = size,
Offset = offset,
};
variables.Add(shaderVariable);
offset += size;
}
return(variables);
}
public ShaderVariable[] GetPushConstants()
{
ShaderVariable[] pushConstants = new ShaderVariable[0];
IEnumerable <string> fields = _segmentCollection.GetPushConstantFields();
if (fields != null)
{
pushConstants = ShaderVariableParser.Parse(fields).ToArray();
for (int i = 0; i < pushConstants.Length; i++)
{
pushConstants[i].ShaderStage = ShaderStage;
}
}
return(pushConstants);
}
public void SetPushConstant(CommandBuffer commandBuffer, string pushConstantName, Matrix4 value)
{
ShaderVariable pushConstant = _pushConstantDict[pushConstantName];
commandBuffer.CmdPushConstants(PipelineLayout, pushConstant.ShaderStage, pushConstant.Offset, pushConstant.Size, new IntPtr(&value));
}