public void TransformFeedbackStreamInstanced(BeginMode mode, ITransformFeedback transformFeedback, int stream, int instanceCount)
{
if (transformFeedback == null)
{
throw new ArgumentNullException("transformFeedback");
}
gl.DrawTransformFeedbackStreamInstanced((int)mode, transformFeedback.Handle, (uint)stream, instanceCount);
}
public void TransformFeedback(BeginMode mode, ITransformFeedback transformFeedback)
{
if (transformFeedback == null)
{
throw new ArgumentNullException("transformFeedback");
}
gl.DrawTransformFeedback((int)mode, transformFeedback.Handle);
}
public override void Initialize()
{
var vertexData = new Vertex[MaxVertices];
vertexData[0] = Vertex.Cannon;
var vertexBufferSource = Context.Create.Buffer(BufferTarget.TransformFeedback, Vertex.SizeInBytes * MaxVertices, BufferUsageHint.StaticDraw, vertexData);
var vertexBufferTarget = Context.Create.Buffer(BufferTarget.TransformFeedback, Vertex.SizeInBytes * MaxVertices, BufferUsageHint.StaticDraw);
vertexArraySource = Context.Create.VertexArray();
vertexArraySource.SetVertexAttributeF(0, vertexBufferSource, VertexAttributeDimension.Two, VertexAttribPointerType.Float, false, Vertex.SizeInBytes, 0);
vertexArraySource.SetVertexAttributeF(1, vertexBufferSource, VertexAttributeDimension.Two, VertexAttribPointerType.Float, false, Vertex.SizeInBytes, 2 * sizeof(float));
vertexArraySource.SetVertexAttributeF(2, vertexBufferSource, VertexAttributeDimension.One, VertexAttribPointerType.Float, false, Vertex.SizeInBytes, 4 * sizeof(float));
vertexArraySource.SetVertexAttributeI(3, vertexBufferSource, VertexAttributeDimension.One, VertexAttribIPointerType.Int, Vertex.SizeInBytes, 5 * sizeof(float));
vertexArraySource.SetVertexAttributeF(4, vertexBufferSource, VertexAttributeDimension.Three, VertexAttribPointerType.Float, false, Vertex.SizeInBytes, 6 * sizeof(float));
vertexArrayTarget = Context.Create.VertexArray();
vertexArrayTarget.SetVertexAttributeF(0, vertexBufferTarget, VertexAttributeDimension.Two, VertexAttribPointerType.Float, false, Vertex.SizeInBytes, 0);
vertexArrayTarget.SetVertexAttributeF(1, vertexBufferTarget, VertexAttributeDimension.Two, VertexAttribPointerType.Float, false, Vertex.SizeInBytes, 2 * sizeof(float));
vertexArrayTarget.SetVertexAttributeF(2, vertexBufferTarget, VertexAttributeDimension.One, VertexAttribPointerType.Float, false, Vertex.SizeInBytes, 4 * sizeof(float));
vertexArrayTarget.SetVertexAttributeI(3, vertexBufferTarget, VertexAttributeDimension.One, VertexAttribIPointerType.Int, Vertex.SizeInBytes, 5 * sizeof(float));
vertexArrayTarget.SetVertexAttributeF(4, vertexBufferTarget, VertexAttributeDimension.Three, VertexAttribPointerType.Float, false, Vertex.SizeInBytes, 6 * sizeof(float));
transformFeedbackSource = Context.Create.TransformFeedback();
transformFeedbackSource.SetBuffer(0, vertexBufferSource);
transformFeedbackTarget = Context.Create.TransformFeedback();
transformFeedbackTarget.SetBuffer(0, vertexBufferTarget);
timeBuffer = Context.Create.Buffer(BufferTarget.Uniform, 2 * sizeof(float), BufferUsageHint.DynamicDraw);
IVertexShader vsh = Context.Create.VertexShader(VertexShaderText);
IGeometryShader gsh = Context.Create.GeometryShader(GeometryShaderText);
IFragmentShader fsh = Context.Create.FragmentShader(FragmentShaderText);
program = Context.Create.Program(new ShaderProgramDescription
{
VertexShaders = new[] { vsh },
GeometryShaders = new[] { gsh },
FragmentShaders = new[] { fsh },
VertexAttributeNames = new[] { "in_position", "in_velocity", "in_timeToAction", "in_type", "in_color" },
TransformFeedbackAttributeNames = new[] { "g_position", "g_velocity", "g_timeToAction", "g_type", "g_color" },
TransformFeedbackMode = TransformFeedbackMode.InterleavedAttribs,
UniformBufferNames = new[] { "Time" }
});
}
public override void Initialize()
{
var vertexData = new Vertex[ParticleCount];
for (int i = 0; i < vertexData.Length; i++)
{
vertexData[i] = new Vertex(i * ParticleTicksDelta);
}
var vertexBufferSource = Context.Create.Buffer(BufferTarget.TransformFeedback, ParticleCount * Vertex.SizeInBytes, BufferUsageHint.StaticDraw, vertexData);
var vertexBufferTarget = Context.Create.Buffer(BufferTarget.TransformFeedback, ParticleCount * Vertex.SizeInBytes, BufferUsageHint.StaticDraw, IntPtr.Zero);
vertexArraySource = Context.Create.VertexArray();
vertexArraySource.SetVertexAttributeF(0, vertexBufferSource, VertexAttributeDimension.Two, VertexAttribPointerType.Float, false, Vertex.SizeInBytes, 0);
vertexArraySource.SetVertexAttributeF(1, vertexBufferSource, VertexAttributeDimension.Two, VertexAttribPointerType.Float, false, Vertex.SizeInBytes, 2 * sizeof(float));
vertexArraySource.SetVertexAttributeF(2, vertexBufferSource, VertexAttributeDimension.One, VertexAttribPointerType.Float, false, Vertex.SizeInBytes, 4 * sizeof(float));
vertexArraySource.SetVertexAttributeF(3, vertexBufferSource, VertexAttributeDimension.Two, VertexAttribPointerType.Float, false, Vertex.SizeInBytes, 5 * sizeof(float));
vertexArraySource.SetVertexAttributeF(4, vertexBufferSource, VertexAttributeDimension.Three, VertexAttribPointerType.Float, false, Vertex.SizeInBytes, 7 * sizeof(float));
vertexArrayTarget = Context.Create.VertexArray();
vertexArrayTarget.SetVertexAttributeF(0, vertexBufferTarget, VertexAttributeDimension.Two, VertexAttribPointerType.Float, false, Vertex.SizeInBytes, 0);
vertexArrayTarget.SetVertexAttributeF(1, vertexBufferTarget, VertexAttributeDimension.Two, VertexAttribPointerType.Float, false, Vertex.SizeInBytes, 2 * sizeof(float));
vertexArrayTarget.SetVertexAttributeF(2, vertexBufferTarget, VertexAttributeDimension.One, VertexAttribPointerType.Float, false, Vertex.SizeInBytes, 4 * sizeof(float));
vertexArrayTarget.SetVertexAttributeF(3, vertexBufferTarget, VertexAttributeDimension.Two, VertexAttribPointerType.Float, false, Vertex.SizeInBytes, 5 * sizeof(float));
vertexArrayTarget.SetVertexAttributeF(4, vertexBufferTarget, VertexAttributeDimension.Three, VertexAttribPointerType.Float, false, Vertex.SizeInBytes, 7 * sizeof(float));
transformFeedbackSource = Context.Create.TransformFeedback();
transformFeedbackSource.SetBuffer(0, vertexBufferSource);
transformFeedbackTarget = Context.Create.TransformFeedback();
transformFeedbackTarget.SetBuffer(0, vertexBufferTarget);
var vsh = Context.Create.VertexShader(VertexShaderText);
var fsh = Context.Create.FragmentShader(FragmentShaderText);
program = Context.Create.Program(new ShaderProgramDescription
{
VertexShaders = new[] { vsh },
FragmentShaders = new[] { fsh },
VertexAttributeNames = new[] { "in_position", "in_velocity", "in_spawn_cooldown", "in_initial_velocity", "in_color" },
TransformFeedbackAttributeNames = new[] { "v_position", "v_velocity", "v_spawn_cooldown", "v_initial_velocity", "v_color" },
TransformFeedbackMode = TransformFeedbackMode.InterleavedAttribs
});
}
public void BeginTransformFeedback(ITransformFeedback transformFeedback, BeginFeedbackMode beginFeedbackMode)
{
context.Bindings.TransformFeedback.Set(transformFeedback);
context.GL.BeginTransformFeedback((int)beginFeedbackMode);
}
public void TransformFeedbackStreamInstanced(BeginMode mode, ITransformFeedback transformFeedback, int stream, int instanceCount)
{
if (transformFeedback == null)
throw new ArgumentNullException("transformFeedback");
gl.DrawTransformFeedbackStreamInstanced((int)mode, transformFeedback.Handle, (uint)stream, instanceCount);
}
public void TransformFeedback(BeginMode mode, ITransformFeedback transformFeedback)
{
if (transformFeedback == null)
throw new ArgumentNullException("transformFeedback");
gl.DrawTransformFeedback((int)mode, transformFeedback.Handle);
}
