public void PushUniform(ShaderUniformDeclaration decl)
{
int offset = 0;
if (Uniforms.Count > 0)
{
ShaderUniformDeclaration previous = Uniforms.Last();
offset = previous.Offset + previous.Size;
}
decl.Offset = offset;
Size += decl.Size;
Uniforms.Add(decl);
}
public void AddField(ShaderUniformDeclaration decl)
{
Size += decl.Size;
int offset = 0;
if (Fields.Count != 0)
{
ShaderUniformDeclaration previous = Fields.Last();
offset = previous.Offset + previous.Size;
}
decl.Offset = offset;
Fields.Add(decl);
}
void ParseCBuffer(string block)
{
string[] tokens = block.Split(new[] { " ", "\t", Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries);
int index = 1;
string bufferName = tokens[index++];
int reg = 0;
if (tokens[index++] == ":") // Register specified
{
reg = int.Parse(Regex.Match(tokens[index++], @"\d+").Value);
}
ShaderUniformBufferDeclaration buffer = null;
ShaderType shaderType = ShaderType.NONE;
if (bufferName.StartsWith("VS"))
{
shaderType = ShaderType.VERTEX;
}
else if (bufferName.StartsWith("PS"))
{
shaderType = ShaderType.PIXEL;
}
else
{
Debug.Assert(false, "CBuffer no shader type");
}
index++; // {
while (!tokens[index].Equals("}"))
{
string type = tokens[index++];
string name = tokens[index++];
// Strip ; from name if present
name = name.Replace(";", "");
if (buffer == null)
{
buffer = new ShaderUniformBufferDeclaration(bufferName, reg, shaderType);
if (name.StartsWith("sys_"))
{
switch (shaderType)
{
case ShaderType.VERTEX: m_VSUniformBuffers.Add(buffer);
break;
case ShaderType.PIXEL: m_PSUniformBuffers.Add(buffer);
break;
}
}
else
{
switch (shaderType)
{
case ShaderType.VERTEX:
Debug.Assert(m_VSUserUniformBuffer == null);
m_VSUserUniformBuffer = buffer;
break;
case ShaderType.PIXEL:
Debug.Assert(m_PSUserUniformBuffer == null);
m_PSUserUniformBuffer = buffer;
break;
}
}
}
ShaderUniformType t = ShaderUniformTypeMethods.StringToUniformType(type);
ShaderUniformDeclaration decl = null;
if (t == ShaderUniformType.NONE)
{
ShaderStruct s = FindStruct(type);
decl = new ShaderUniformDeclaration(s, name);
}
else
{
decl = new ShaderUniformDeclaration(t, name);
}
buffer.PushUniform(decl);
}
buffer.Align();
}