public Shader(string vertexShaderSource, string fragmentShaderSource)
{
ContextManager.ActivateDefaultIfNoCurrent();
m_uniformCache = new Dictionary <string, int>();
m_attributeCache = new Dictionary <string, int>();
m_GLprogramID = GL.CreateProgram();
if (!string.IsNullOrEmpty(vertexShaderSource))
{
CreateShader(ShaderType.VertexShader, vertexShaderSource, m_GLprogramID, out m_GLvertexShaderID);
}
if (!string.IsNullOrEmpty(fragmentShaderSource))
{
CreateShader(ShaderType.FragmentShader, fragmentShaderSource, m_GLprogramID, out m_GLfragmentShaderID);
}
GL.LinkProgram(m_GLprogramID);
int success = 0;
GL.GetProgram(m_GLprogramID, GetProgramParameterName.LinkStatus, out success);
if (success <= 0)
{
throw new ShaderException("Failed to LINK shader");
}
}
protected VertexBuffer(BufferUsageHint usageHint)
{
ContextManager.ActivateDefaultIfNoCurrent();
GL.GenBuffers(1, out m_GLVBOID);
m_usageHint = usageHint;
}
/// <summary>
///
/// </summary>
/// <param name="result">Allocated memory of the size of texture and specified PixelType</param>
public void GetPixels(IntPtr result)
{
ContextManager.ActivateDefaultIfNoCurrent();
Bind();
GL.GetTexImage(TextureTarget.Texture2D, 0, m_pixelFormat, m_pixelType, result);
Unbind();
}
public void GetPixels(IntPtr result, OpenTK.Graphics.OpenGL.PixelFormat pixelFormat, PixelType pixelType = PixelType.UnsignedByte)
{
ContextManager.ActivateDefaultIfNoCurrent();
Bind();
GL.GetTexImage(TextureTarget.Texture2D, 0, pixelFormat, pixelType, result);
Unbind();
}
public void Update(RectangleInt area, IntPtr dataPtr, OpenTK.Graphics.OpenGL.PixelFormat pixelFormat, PixelType pixelType = PixelType.UnsignedByte)
{
ContextManager.ActivateDefaultIfNoCurrent();
Bind();
GL.TexSubImage2D(TextureTarget.Texture2D, 0, area.Position.X, area.Position.Y, area.Size.X, area.Size.Y, pixelFormat, pixelType, dataPtr);
Unbind();
}
public void Update(RectangleInt area, IntPtr dataPtr)
{
ContextManager.ActivateDefaultIfNoCurrent();
Bind();
GL.TexSubImage2D(TextureTarget.Texture2D, 0, area.Position.X, area.Position.Y, area.Size.X, area.Size.Y, m_pixelFormat, m_pixelType, dataPtr);
Unbind();
}
protected virtual void Dispose(bool disposing)
{
if (!m_disposed)
{
if (disposing)
{
}
ContextManager.ActivateDefaultIfNoCurrent();
GL.DeleteTexture(m_GLTextureID);
m_disposed = true;
}
}
private void CreateFromPtr(Point2 size, IntPtr dataPtr, OpenTK.Graphics.OpenGL.PixelFormat inputPixelFormat, PixelInternalFormat internalPixelFormat, PixelType pixelType)
{
ContextManager.ActivateDefaultIfNoCurrent();
GL.GenTextures(1, out m_GLTextureID);
GL.BindTexture(TextureTarget.Texture2D, m_GLTextureID);
GL.TexImage2D(TextureTarget.Texture2D, 0, internalPixelFormat, size.X, size.Y, 0, inputPixelFormat, pixelType, dataPtr);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.Linear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Linear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (int)TextureWrapMode.ClampToEdge);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (int)TextureWrapMode.ClampToEdge);
GL.BindTexture(TextureTarget.Texture2D, 0);
ApplySize(size);
m_pixelFormat = inputPixelFormat;
m_pixelType = pixelType;
m_pixelInternalFormat = internalPixelFormat;
}
public static void Unbind(bool pixelUnpackBuffer = true)
{
ContextManager.ActivateDefaultIfNoCurrent();
GL.BindBuffer((pixelUnpackBuffer ? BufferTarget.PixelUnpackBuffer : BufferTarget.PixelPackBuffer), 0);
}
public void Bind()
{
ContextManager.ActivateDefaultIfNoCurrent();
GL.BindBuffer(m_bufferTarget, m_GLPBOID);
}
