// Note: We only support a single user uniform buffer per shader
void CreateBuffers()
{
m_VSConstantBuffers = new D3D11.Buffer[m_VSUniformBuffers.Count + (m_VSUserUniformBuffer != null ? 1 : 0)];
foreach (ShaderUniformBufferDeclaration decl in m_VSUniformBuffers)
{
var desc = new D3D11.BufferDescription
{
SizeInBytes = decl.Size,
Usage = D3D11.ResourceUsage.Dynamic,
BindFlags = D3D11.BindFlags.ConstantBuffer,
CpuAccessFlags = D3D11.CpuAccessFlags.Write
};
m_VSConstantBuffers[decl.Register] = new D3D11.Buffer(Context.Instance.Dev, desc);
}
if (m_VSUserUniformBuffer != null)
{
ShaderUniformBufferDeclaration decl = m_VSUserUniformBuffer;
var desc = new D3D11.BufferDescription
{
SizeInBytes = decl.Size,
Usage = D3D11.ResourceUsage.Dynamic,
BindFlags = D3D11.BindFlags.ConstantBuffer,
CpuAccessFlags = D3D11.CpuAccessFlags.Write
};
m_VSConstantBuffers[decl.Register] = new D3D11.Buffer(Context.Instance.Dev, desc);
}
m_PSConstantBuffers = new D3D11.Buffer[m_PSUniformBuffers.Count + (m_PSUserUniformBuffer != null ? 1 : 0)];
foreach (ShaderUniformBufferDeclaration decl in m_PSUniformBuffers)
{
var desc = new D3D11.BufferDescription
{
SizeInBytes = decl.Size,
Usage = D3D11.ResourceUsage.Dynamic,
BindFlags = D3D11.BindFlags.ConstantBuffer,
CpuAccessFlags = D3D11.CpuAccessFlags.Write
};
m_PSConstantBuffers[decl.Register] = new D3D11.Buffer(Context.Instance.Dev, desc);
}
if (m_PSUserUniformBuffer != null)
{
ShaderUniformBufferDeclaration decl = m_PSUserUniformBuffer;
var desc = new D3D11.BufferDescription
{
SizeInBytes = decl.Size,
Usage = D3D11.ResourceUsage.Dynamic,
BindFlags = D3D11.BindFlags.ConstantBuffer,
CpuAccessFlags = D3D11.CpuAccessFlags.Write
};
m_PSConstantBuffers[decl.Register] = new D3D11.Buffer(Context.Instance.Dev, desc);
}
}
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();
}