static TransformFeedbackCalculator()
{
glAttachShader = GL.Instance.GetDelegateFor("glAttachShader", GLDelegates.typeof_void_uint_uint) as GLDelegates.void_uint_uint;
glLinkProgram = GL.Instance.GetDelegateFor("glLinkProgram", GLDelegates.typeof_void_uint) as GLDelegates.void_uint;
glTransformFeedbackVaryings = GL.Instance.GetDelegateFor("glTransformFeedbackVaryings", GLDelegates.typeof_void_uint_int_stringN_uint) as GLDelegates.void_uint_int_stringN_uint;
glBindBufferBase = GL.Instance.GetDelegateFor("glBindBufferBase", GLDelegates.typeof_void_uint_uint_uint) as GLDelegates.void_uint_uint_uint;
glBeginTransformFeedback = GL.Instance.GetDelegateFor("glBeginTransformFeedback", GLDelegates.typeof_void_uint) as GLDelegates.void_uint;
glEndTransformFeedback = GL.Instance.GetDelegateFor("glEndTransformFeedback", GLDelegates.typeof_void_void) as GLDelegates.void_void;
glGetBufferSubData = GL.Instance.GetDelegateFor("glGetBufferSubData", GLDelegates.typeof_void_uint_int_int_IntPtr) as GLDelegates.void_uint_int_int_IntPtr;
}
/// <summary>
/// Bind this uniform buffer object and a uniform block to the same binding point.
/// </summary>
/// <param name="uniformBlockIndex">index of uniform block got by (glGetUniformBlockIndex).</param>
/// <param name="uniformBlockBindingPoint">binding point maintained by OpenGL context.</param>
/// <param name="program">shader program.</param>
public void Binding(ShaderProgram program, uint uniformBlockIndex, uint uniformBlockBindingPoint)
{
if (glBindBufferBase == null)
{
glBindBufferBase = GL.Instance.GetDelegateFor("glBindBufferBase", GLDelegates.typeof_void_uint_uint_uint) as GLDelegates.void_uint_uint_uint;
}
if (glUniformBlockBinding == null)
{
glUniformBlockBinding = GL.Instance.GetDelegateFor("glUniformBlockBinding", GLDelegates.typeof_void_uint_uint_uint) as GLDelegates.void_uint_uint_uint;
}
glBindBufferBase(GL.GL_UNIFORM_BUFFER, uniformBlockBindingPoint, this.BufferId);
glUniformBlockBinding(program.ProgramId, uniformBlockIndex, uniformBlockBindingPoint);
}
static TransformFeedbackObject()
{
glGenTransformFeedbacks = GL.Instance.GetDelegateFor("glGenTransformFeedbacks", GLDelegates.typeof_void_int_uintN) as GLDelegates.void_int_uintN;
glBindTransformFeedback = GL.Instance.GetDelegateFor("glBindTransformFeedback", GLDelegates.typeof_void_uint_uint) as GLDelegates.void_uint_uint;
glDeleteTransformFeedbacks = GL.Instance.GetDelegateFor("glDeleteTransformFeedbacks", GLDelegates.typeof_void_int_uintN) as GLDelegates.void_int_uintN;
glBindBufferBase = GL.Instance.GetDelegateFor("glBindBufferBase", GLDelegates.typeof_void_uint_uint_uint) as GLDelegates.void_uint_uint_uint;
glBindBufferRange = GL.Instance.GetDelegateFor("glBindBufferRange", GLDelegates.typeof_void_uint_uint_uint_int_int) as GLDelegates.void_uint_uint_uint_int_int;
//glTransformFeedbackVaryings = GL.Instance.GetDelegateFor("glTransformFeedbackVaryings", GLDelegates.typeof_void_uint_int_stringN_uint) as GLDelegates.void_uint_int_stringN_uint;
glGetTransformFeedbackVarying = GL.Instance.GetDelegateFor("glGetTransformFeedbackVarying", GLDelegates.typeof_void_uint_uint_int_intN_intN_uintN_string) as GLDelegates.void_uint_uint_int_intN_intN_uintN_string;
glBeginTransformFeedback = GL.Instance.GetDelegateFor("glBeginTransformFeedback", GLDelegates.typeof_void_uint) as GLDelegates.void_uint;
glPauseTransformFeedback = GL.Instance.GetDelegateFor("glPauseTransformFeedback", GLDelegates.typeof_void_void) as GLDelegates.void_void;
glResumeTransformFeedback = GL.Instance.GetDelegateFor("glResumeTransformFeedback", GLDelegates.typeof_void_void) as GLDelegates.void_void;
glEndTransformFeedback = GL.Instance.GetDelegateFor("glEndTransformFeedback", GLDelegates.typeof_void_void) as GLDelegates.void_void;
glDrawTransformFeedback = GL.Instance.GetDelegateFor("glDrawTransformFeedback", GLDelegates.typeof_void_uint_uint) as GLDelegates.void_uint_uint;
}
/// <summary>
/// Bind this uniform buffer object and a uniform block to the same binding point.
/// </summary>
/// <param name="uniformBlockIndex">index of uniform block got by (glGetUniformBlockIndex).</param>
/// <param name="bindingPoint">binding point maintained by OpenGL context.</param>
/// <param name="program">shader program.</param>
public void Binding(ShaderProgram program, uint uniformBlockIndex, uint bindingPoint)
{
if (glBindBufferBase == null)
{
glBindBufferBase = OpenGL.GetDelegateFor("glBindBufferBase", GLDelegates.typeof_void_uint_uint_uint) as GLDelegates.void_uint_uint_uint;
}
if (glUniformBlockBinding == null)
{
glUniformBlockBinding = OpenGL.GetDelegateFor("glUniformBlockBinding", GLDelegates.typeof_void_uint_uint_uint) as GLDelegates.void_uint_uint_uint;
}
// 将 缓冲区 绑定到binding point
glBindBufferBase(OpenGL.GL_UNIFORM_BUFFER, bindingPoint, this.BufferId);
// 将 Uniform Block 绑定到binding point
glUniformBlockBinding(program.ProgramId, uniformBlockIndex, bindingPoint);
}
/// <summary>
/// Bind this uniform buffer object and a uniform block to the same binding point.
/// </summary>
/// <param name="program">shader program.</param>
/// <param name="storageBlockName">name of buffer block in shader.</param>
/// <param name="storageBlockBindingPoint">binding point maintained by OpenGL context.</param>
public void Binding(ShaderProgram program, string storageBlockName, uint storageBlockBindingPoint)
{
if (glGetProgramResourceIndex == null)
{
glGetProgramResourceIndex = OpenGL.GetDelegateFor("glGetProgramResourceIndex", GLDelegates.typeof_uint_uint_uint_string) as GLDelegates.uint_uint_uint_string;
}
if (glBindBufferBase == null)
{
glBindBufferBase = OpenGL.GetDelegateFor("glBindBufferBase", GLDelegates.typeof_void_uint_uint_uint) as GLDelegates.void_uint_uint_uint;
}
if (glShaderStorageBlockBinding == null)
{
glShaderStorageBlockBinding = OpenGL.GetDelegateFor("glShaderStorageBlockBinding", GLDelegates.typeof_void_uint_uint_uint) as GLDelegates.void_uint_uint_uint;
}
uint storageBlockIndex = glGetProgramResourceIndex(program.ProgramId, OpenGL.GL_SHADER_STORAGE_BLOCK, storageBlockName);
glBindBufferBase(OpenGL.GL_SHADER_STORAGE_BUFFER, storageBlockBindingPoint, this.BufferId);
glShaderStorageBlockBinding(program.ProgramId, storageBlockIndex, storageBlockBindingPoint);
}
private void ComputeShaderEngrave(ShaderProgram engraveComp, Texture texInput, VertexBuffer outBuffer, int width, int height)
{
if (glBindBufferBase == null)
{
glBindBufferBase = GL.Instance.GetDelegateFor("glBindBufferBase", GLDelegates.typeof_void_uint_uint_uint) as GLDelegates.void_uint_uint_uint;
}
// engrave volume data with compute shader.
uint inputUnit = 0, outputUnit = 1;
// Activate the compute program and bind the output texture image
engraveComp.Bind();
//glBindImageTexture(outputUnit, outBuffer.BufferId, 0, false, 0, GL.GL_READ_WRITE, GL.GL_RED);
glBindBufferBase(GL.GL_SHADER_STORAGE_BUFFER, outputUnit, outBuffer.BufferId);
glBindImageTexture(inputUnit, texInput.Id, 0, false, 0, GL.GL_READ_WRITE, GL.GL_RGBA32F);
// Dispatch
glDispatchCompute(1, (uint)height, 1);
//glDispatchCompute((uint)width, (uint)height, 1);
glMemoryBarrier(GL.GL_SHADER_IMAGE_ACCESS_BARRIER_BIT);
glBindImageTexture(inputUnit, 0, 0, false, 0, GL.GL_READ_WRITE, GL.GL_RGBA32F);
//glBindImageTexture(outputUnit, 0, 0, false, 0, GL.GL_READ_WRITE, GL.GL_RED);
engraveComp.Unbind();
}
static ParticlesNode()
{
glBindImageTexture = GL.Instance.GetDelegateFor("glBindImageTexture", GLDelegates.typeof_void_uint_uint_int_bool_int_uint_uint) as GLDelegates.void_uint_uint_int_bool_int_uint_uint;
glDispatchCompute = GL.Instance.GetDelegateFor("glDispatchCompute", GLDelegates.typeof_void_uint_uint_uint) as GLDelegates.void_uint_uint_uint;
glMemoryBarrier = GL.Instance.GetDelegateFor("glMemoryBarrier", GLDelegates.typeof_void_uint) as GLDelegates.void_uint;
}
static SimpleComputeNode()
{
glBindImageTexture = GL.Instance.GetDelegateFor("glBindImageTexture", GLDelegates.typeof_void_uint_uint_int_bool_int_uint_uint) as GLDelegates.void_uint_uint_int_bool_int_uint_uint;
glDispatchCompute = GL.Instance.GetDelegateFor("glDispatchCompute", GLDelegates.typeof_void_uint_uint_uint) as GLDelegates.void_uint_uint_uint;
}
static ParticleComputeRenderer()
{
glBindBufferBase = OpenGL.GetDelegateFor("glBindBufferBase", GLDelegates.typeof_void_uint_uint_uint) as GLDelegates.void_uint_uint_uint;
glBindImageTexture = OpenGL.GetDelegateFor("glBindImageTexture", GLDelegates.typeof_void_uint_uint_int_bool_int_uint_uint) as GLDelegates.void_uint_uint_int_bool_int_uint_uint;
}
static TexBufferStorage()
{
glTexBuffer = GL.Instance.GetDelegateFor("glTexBuffer", GLDelegates.typeof_void_uint_uint_uint) as GLDelegates.void_uint_uint_uint;
}
