/// <summary>
/// Binds a depth state object
/// </summary>
public void BindDepthState(DepthState state)
{
if (_currentDepthState == null || _currentDepthState.DepthMask != state.DepthMask)
{
GL.DepthMask(state.DepthMask);
}
// Commented out if conditions are base on the assumtion that depthFunc is only affected if depthmask is enabled, which seems to not be the case
//if(DepthMask != newState.DepthMask && newState.DepthMask)
//{
// DepthMask = newState.DepthMask;
// GL.DepthMask(newState.DepthMask);
//}
if (_currentDepthState == null || _currentDepthState.DepthFunction != state.DepthFunction)
{
GL.DepthFunc(state.DepthFunction);
}
//if(DepthMask != newState.DepthMask && !newState.DepthMask)
//{
// DepthMask = newState.DepthMask;
// GL.DepthMask(newState.DepthMask);
//}
_currentDepthState = state;
}
/// <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();
}
/// <summary>
/// Creates a new Glob Device. Can only be called once the OpenGL context is already created, for example by creating an OpenTK GameWindow.
/// </summary>
/// <param name="textOutput">Text output that will be used by Glob</param>
/// <param name="fileManager">File manager that will be used by Glob</param>
public Device(ITextOutputGlob textOutput, IFileManagerGlob fileManager)
{
TextOutput = textOutput;
FileManager = fileManager;
DeviceInfo = new DeviceInfo();
// TODO: move these to DeviceInfo.ToString()
TextOutput.Print(OutputTypeGlob.Notify, "OpenGL: " + DeviceInfo.OpenGLVersion + " GLSL: " + DeviceInfo.GLSLVersion);
TextOutput.Print(OutputTypeGlob.Notify, "Renderer: " + DeviceInfo.DeviceRenderer + ", " + DeviceInfo.DeviceVendor);
// Print extensions
StringBuilder allExtensionsStr = new StringBuilder();
foreach (string extension in DeviceInfo.Extensions)
{
allExtensionsStr.Append(extension);
allExtensionsStr.Append(" ");
}
TextOutput.Print(OutputTypeGlob.Notify, DeviceInfo.Extensions.Count.ToString() + " GL extensions found");
TextOutput.Print(OutputTypeGlob.LogOnly, allExtensionsStr.ToString());
ShaderRepository = new ShaderRepository(this, "#extension GL_ARB_separate_shader_objects : enable\n");
ShaderRepository.StartFileWatcher(FileManager.GetPathShaderSource(""));
_bufferBindingManager = new BufferBindingManager();
DebugMessageManager = new DebugMessageManager(true);
_textureUnit = new TextureUnitState();
_currentRasterizerState = new RasterizerState();
_currentDepthState = new DepthState();
_currentBlendState = new BlendState();
// Create and bind a global vertex array object
_vaoGlobal = GL.GenVertexArray();
GL.BindVertexArray(_vaoGlobal);
}
/// <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)
{
}