protected override void DoInitialize()
{
{
// particleSimulator-fountain.comp is also OK.
var shaderCode = new ShaderCode(File.ReadAllText(@"shaders\ParticleSimulatorRenderer\particleSimulator.comp"), ShaderType.ComputeShader);
this.computeProgram = shaderCode.CreateProgram();
}
{
BufferPtr bufferPtr = this.positionBufferPtr;
Texture texture = bufferPtr.DumpBufferTexture(OpenGL.GL_RGBA32F, autoDispose: false);
texture.Initialize();
this.positionTexture = texture;
}
{
BufferPtr bufferPtr = this.velocityBufferPtr;
Texture texture = bufferPtr.DumpBufferTexture(OpenGL.GL_RGBA32F, autoDispose: false);
texture.Initialize();
this.velocityTexture = texture;
}
{
IndependentBufferPtr bufferPtr = null;
using (var buffer = new UniformBuffer <vec4>(BufferUsage.DynamicCopy, noDataCopyed: true))
{
buffer.Create(elementCount: 64);
bufferPtr = buffer.GetBufferPtr();
}
bufferPtr.Bind();
OpenGL.BindBufferBase((BindBufferBaseTarget)BufferTarget.UniformBuffer, 0, bufferPtr.BufferId);
this.attractorBufferPtr = bufferPtr;
bufferPtr.Unbind();
}
}
/// <summary>
///
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="internalFormat"></param>
/// <param name="elementCount"></param>
/// <param name="usage"></param>
/// <param name="noDataCopyed"></param>
/// <returns></returns>
public static Texture CreateBufferTexture <T>(uint internalFormat, int elementCount, BufferUsage usage, bool noDataCopyed = false) where T : struct
{
var buffer = new TextureBuffer <T>(usage, noDataCopyed);
buffer.Create(elementCount);
BufferPtr bufferPtr = buffer.GetBufferPtr();
return(bufferPtr.DumpBufferTexture(internalFormat, autoDispose: true));
}
/// <summary>
/// Dump a <see cref="Texture"/> filled with this <see cref="BufferPtr"/>.
/// </summary>
/// <param name="bufferPtr"></param>
/// <param name="internalFormat"></param>
/// <param name="autoDispose">Dispose <paramref name="bufferPtr"/> when disposing returned texture.</param>
/// <returns></returns>
public static Texture DumpBufferTexture(this BufferPtr bufferPtr, uint internalFormat, bool autoDispose)
{
var texture = new Texture(TextureTarget.TextureBuffer,
new TexBufferImageFiller(internalFormat, bufferPtr, autoDispose),
new NullSampler());
texture.Initialize();
return(texture);
}
/// <summary>
///
/// </summary>
/// <param name="internalFormat"></param>
/// <param name="bufferPtr"></param>
/// <param name="autoDispose">Dispose <paramref name="bufferPtr"/> when disposing returned texture.</param>
/// <returns></returns>
public static Texture CreateBufferTexture(uint internalFormat, BufferPtr bufferPtr, bool autoDispose)
{
return(bufferPtr.DumpBufferTexture(internalFormat, autoDispose));
}
public ParticleComputeRenderer(BufferPtr positionBufferPtr, BufferPtr velocityBufferPtr)
{
this.positionBufferPtr = positionBufferPtr;
this.velocityBufferPtr = velocityBufferPtr;
}