/// <summary>
/// Binds vertex buffer format
/// </summary>
public void BindVertexFormat(VertexBufferFormat format)
{
if (_boundVertexFormat == format)
{
return;
}
format.Bind(_boundVertexFormat);
_boundVertexFormat = format;
}
/// <summary>
/// Creates a new graphics pipeline
/// </summary>
/// <param name="device">Glob device</param>
/// <param name="vertex">Vertex shader</param>
/// <param name="tesselationControl">Tesselation control shader - can be null</param>
/// <param name="tesselationEvaluation">Tesselation evaluation shader - can be null</param>
/// <param name="geometry">Geometry shader - can be null</param>
/// <param name="fragment">Fragment shader</param>
/// <param name="vertexFormat">Vertex buffer format - can be null</param>
/// <param name="rasterizerState">Rasterization state - cull face and polygon mode</param>
/// <param name="depthState">Depth state - depth test func and depth mask</param>
/// <param name="blendState">Blend state - color/alpha blending mode - can be null</param>
public GraphicsPipeline(Device device, Shader vertex, Shader fragment, Shader tesselationControl, Shader tesselationEvaluation, Shader geometry, VertexBufferFormat vertexFormat, RasterizerState rasterizerState, DepthState depthState, BlendState blendState = null)
{
_device = device;
_shaderPipeline = _device.ShaderRepository.GetShaderPipeline(vertex, tesselationControl, tesselationEvaluation, geometry, fragment, null);
_vertexFormat = vertexFormat;
_rasterizerState = rasterizerState;
_depthState = depthState;
_blendState = blendState;
if (_blendState == null)
{
_blendState = new BlendState();
}
}
/// <summary>
/// Changes all current states to null, so any future bind or state change will effectively skip redundant state change checks and should execute its OpenGL calls.
/// </summary>
public void Invalidate()
{
ShaderPipeline = null;
_textureUnit.Invalidate();
_currentRasterizerState = null;
_currentDepthState = null;
_currentBlendState = null;
_boundReadFramebuffer = -1;
_boundDrawFramebuffer = -1;
_boundBothFramebuffer = -1;
_boundVertexFormat = null;
_boundVertexSource = null;
_bufferBindingManager.Invalidate();
}
internal void Bind(VertexBufferFormat old)
{
if (old != null)
{
int disable = old._enabledAttributesMask & (~_enabledAttributesMask);
int enable = (~old._enabledAttributesMask) & _enabledAttributesMask;
for (int i = 0; i < MaxAttributes; i++)
{
if (((disable >> i) & 1) > 0)
{
GL.DisableVertexAttribArray(i);
}
if (((enable >> i) & 1) > 0)
{
GL.EnableVertexAttribArray(i);
}
}
}
else
{
foreach (var attribute in _attributes)
{
GL.EnableVertexAttribArray(attribute.AttribIndex);
}
}
foreach (var attribute in _attributes)
{
GL.EnableVertexAttribArray(attribute.AttribIndex);
}
foreach (var attribute in _attributes)
{
attribute.Bind();
}
}
/// <summary>
/// Creates a new graphics pipeline
/// </summary>
/// <param name="device">Glob device</param>
/// <param name="vertex">Vertex shader</param>
/// <param name="fragment">Fragment shader</param>
/// <param name="vertexFormat">Vertex buffer format - can be null</param>
/// <param name="rasterizerState">Rasterization state - cull face and polygon mode</param>
/// <param name="depthState">Depth state - depth test func and depth mask</param>
/// <param name="blendState">Blend state - color/alpha blending mode - can be null</param>
public GraphicsPipeline(Device device, Shader vertex, Shader fragment, VertexBufferFormat vertexFormat, RasterizerState rasterizerState, DepthState depthState, BlendState blendState = null)
: this(device, vertex, fragment, null, null, null, vertexFormat, rasterizerState, depthState, blendState)
{
}