diff options
| author | gdk <gab.dark.100@gmail.com> | 2019-10-13 03:02:07 -0300 |
|---|---|---|
| committer | Thog <thog@protonmail.com> | 2020-01-09 02:13:00 +0100 |
| commit | 1876b346fea647e8284a66bb6d62c38801035cff (patch) | |
| tree | 6eeff094298cda84d1613dc5ec0691e51d7b35f1 /Ryujinx.Graphics.OpenGL/VertexArray.cs | |
| parent | f617fb542a0e3d36012d77a4b5acbde7b08902f2 (diff) | |
Initial work
Diffstat (limited to 'Ryujinx.Graphics.OpenGL/VertexArray.cs')
| -rw-r--r-- | Ryujinx.Graphics.OpenGL/VertexArray.cs | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/Ryujinx.Graphics.OpenGL/VertexArray.cs b/Ryujinx.Graphics.OpenGL/VertexArray.cs new file mode 100644 index 00000000..cf87c953 --- /dev/null +++ b/Ryujinx.Graphics.OpenGL/VertexArray.cs @@ -0,0 +1,135 @@ +using OpenTK.Graphics.OpenGL; +using Ryujinx.Graphics.GAL.InputAssembler; +using Ryujinx.Graphics.OpenGL.Formats; +using System; + +namespace Ryujinx.Graphics.OpenGL +{ + class VertexArray : IDisposable + { + public int Handle { get; } + + private bool _needsAttribsUpdate; + + private VertexBufferDescriptor[] _vertexBuffers; + private VertexAttribDescriptor[] _vertexAttribs; + + public VertexArray() + { + Handle = GL.GenVertexArray(); + } + + public void Bind() + { + GL.BindVertexArray(Handle); + } + + public void SetVertexBuffers(VertexBufferDescriptor[] vertexBuffers) + { + int bindingIndex = 0; + + foreach (VertexBufferDescriptor vb in vertexBuffers) + { + if (vb.Buffer.Buffer != null) + { + int bufferHandle = ((Buffer)vb.Buffer.Buffer).Handle; + + GL.BindVertexBuffer(bindingIndex, bufferHandle, (IntPtr)vb.Buffer.Offset, vb.Stride); + + GL.VertexBindingDivisor(bindingIndex, vb.Divisor); + } + else + { + GL.BindVertexBuffer(bindingIndex, 0, IntPtr.Zero, 0); + } + + bindingIndex++; + } + + _vertexBuffers = vertexBuffers; + + _needsAttribsUpdate = true; + } + + public void SetVertexAttributes(VertexAttribDescriptor[] vertexAttribs) + { + int attribIndex = 0; + + foreach (VertexAttribDescriptor attrib in vertexAttribs) + { + FormatInfo fmtInfo = FormatTable.GetFormatInfo(attrib.Format); + + GL.EnableVertexAttribArray(attribIndex); + + int offset = attrib.Offset; + int size = fmtInfo.Components; + + bool isFloat = fmtInfo.PixelType == PixelType.Float || + fmtInfo.PixelType == PixelType.HalfFloat; + + if (isFloat || fmtInfo.Normalized || fmtInfo.Scaled) + { + VertexAttribType type = (VertexAttribType)fmtInfo.PixelType; + + GL.VertexAttribFormat(attribIndex, size, type, fmtInfo.Normalized, offset); + } + else + { + VertexAttribIntegerType type = (VertexAttribIntegerType)fmtInfo.PixelType; + + GL.VertexAttribIFormat(attribIndex, size, type, offset); + } + + GL.VertexAttribBinding(attribIndex, attrib.BufferIndex); + + attribIndex++; + } + + for (; attribIndex < 16; attribIndex++) + { + GL.DisableVertexAttribArray(attribIndex); + } + + _vertexAttribs = vertexAttribs; + } + + public void SetIndexBuffer(Buffer indexBuffer) + { + GL.BindBuffer(BufferTarget.ElementArrayBuffer, indexBuffer?.Handle ?? 0); + } + + public void Validate() + { + for (int attribIndex = 0; attribIndex < _vertexAttribs.Length; attribIndex++) + { + VertexAttribDescriptor attrib = _vertexAttribs[attribIndex]; + + if ((uint)attrib.BufferIndex >= _vertexBuffers.Length) + { + GL.DisableVertexAttribArray(attribIndex); + + continue; + } + + if (_vertexBuffers[attrib.BufferIndex].Buffer.Buffer == null) + { + GL.DisableVertexAttribArray(attribIndex); + + continue; + } + + if (_needsAttribsUpdate) + { + GL.EnableVertexAttribArray(attribIndex); + } + } + + _needsAttribsUpdate = false; + } + + public void Dispose() + { + GL.DeleteVertexArray(Handle); + } + } +} |