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();
}
{
GLBuffer buffer = this.positionBuffer;
Texture texture = buffer.DumpBufferTexture(OpenGL.GL_RGBA32F, autoDispose: false);
texture.Initialize();
this.positionTexture = texture;
}
{
GLBuffer buffer = this.velocityBuffer;
Texture texture = buffer.DumpBufferTexture(OpenGL.GL_RGBA32F, autoDispose: false);
texture.Initialize();
this.velocityTexture = texture;
}
{
const int length = 64;
UniformBuffer buffer = UniformBuffer.Create(typeof(vec4), length, BufferUsage.DynamicCopy);
buffer.Bind();
OpenGL.BindBufferBase((BindBufferBaseTarget)BufferTarget.UniformBuffer, 0, buffer.BufferId);
buffer.Unbind();
this.attractorBuffer = buffer;
OpenGL.CheckError();
}
}
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();
}
}
protected override void DoRender(RenderEventArgs arg)
{
{
this.computeProgram.Bind();
// Also bind created texture ...
this.texture.Bind();
// ... and bind this texture as an image, as we will write to it. see binding = 0 in shader.
//glBindImageTexture(0, g_texture, 0, GL_FALSE, 0, GL_WRITE_ONLY, GL_RGBA8);
OpenGL.BindImageTexture(0, this.texture.Id, 0, false, 0, OpenGL.GL_WRITE_ONLY, OpenGL.GL_RGBA8);
//glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 1, g_directionSSBO);
OpenGL.BindBufferBase(BindBufferBaseTarget.ShaderStorageBuffer, 1, this.g_directionSSBO.BufferId);
//glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 2, g_positionSSBO);
OpenGL.BindBufferBase(BindBufferBaseTarget.ShaderStorageBuffer, 2, this.g_positionSSBO.BufferId);
//glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 3, g_stackSSBO);
OpenGL.BindBufferBase(BindBufferBaseTarget.ShaderStorageBuffer, 3, this.g_stackSSBO.BufferId);
//glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 4, g_sphereSSBO);
OpenGL.BindBufferBase(BindBufferBaseTarget.ShaderStorageBuffer, 4, this.g_sphereSSBO.BufferId);
//glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 5, g_pointLightSSBO);
OpenGL.BindBufferBase(BindBufferBaseTarget.ShaderStorageBuffer, 3, this.g_pointLightSSBO.BufferId);
}
{
//mat4 mvp = arg.Camera.GetProjectionMatrix() * arg.Camera.GetViewMatrix();
this.computeProgram.Bind();
OpenGL.GetDelegateFor <OpenGL.glDispatchCompute>()(WIDTH / g_localSize, HEIGHT / g_localSize, 1);
this.computeProgram.Unbind();
this.Program.Bind();
this.texture.Bind();
// ... and bind this texture as an image, as we will write to it. see binding = 0 in shader.
//glBindImageTexture(0, g_texture, 0, GL_FALSE, 0, GL_WRITE_ONLY, GL_RGBA8);
OpenGL.BindImageTexture(0, this.texture.Id, 0, false, 0, OpenGL.GL_WRITE_ONLY, OpenGL.GL_RGBA8);
mat4 mvp = arg.Camera.GetProjectionMatrix() * arg.Camera.GetViewMatrix();
this.SetUniform("mvp", mvp);
base.DoRender(arg);
}
}
