public OpenGLVertexArray(GL gl)
{
_gl = gl;
_vertexBuffers = new List <VertexBuffer>();
_rendererID = (RendererID)_gl.CreateVertexArray();
Bind();
}
public unsafe OpenGLVertexBuffer(GL gl, uint count)
{
_gl = gl;
_rendererID = (RendererID)_gl.CreateBuffer();
Bind();
int size = Marshal.SizeOf <T>();
_gl.BufferData(BufferTargetARB.ArrayBuffer, (nuint)(size * count), null, GLEnum.DynamicDraw);
}
public NiPersistentSrcTextureRendererData()
{
palette = null;
numMipmaps = (uint)0;
bytesPerPixel = (uint)0;
numPixels = (uint)0;
padNumPixels = (uint)0;
numFaces = (uint)0;
platform = (PlatformID)0;
renderer = (RendererID)0;
}
public OpenGLVertexBuffer(GL gl, ReadOnlySpan <T> vertices)
{
_gl = gl;
_rendererID = (RendererID)_gl.CreateBuffer();
Bind();
int size = Marshal.SizeOf <T>();
_gl.BufferData(BufferTargetARB.ArrayBuffer, (nuint)(vertices.Length * size), vertices,
GLEnum.StaticDraw);
}
public OpenGLIndexBuffer(GL gl, ReadOnlySpan <T> indices)
{
_gl = gl;
_count = (uint)indices.Length;
_rendererID = (RendererID)_gl.CreateBuffer();
Bind();
int size = Marshal.SizeOf <T>();
_gl.BufferData(BufferTargetARB.ElementArrayBuffer, (nuint)(_count * size), indices,
GLEnum.StaticDraw);
}
public override unsafe void Invalidate()
{
if (_rendererID != 0)
{
Dispose(true);
}
_rendererID = (RendererID)_gl.CreateFramebuffer();
Bind();
_gl.CreateTextures(TextureTarget.Texture2D, 1, out uint generatedId);
_colorAttachmentRendererID = (RendererID)generatedId;
_gl.BindTexture(TextureTarget.Texture2D, _colorAttachmentRendererID);
_gl.TexImage2D(TextureTarget.Texture2D, 0, (int)GLEnum.Rgba8, _specs.Width, _specs.Height, 0, GLEnum.Rgba,
PixelType.UnsignedByte, null);
_gl.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (int)TextureWrapMode.Repeat);
_gl.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (int)TextureWrapMode.Repeat);
_gl.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter,
(int)TextureMinFilter.Linear);
_gl.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter,
(int)TextureMagFilter.Linear);
_gl.FramebufferTexture2D(FramebufferTarget.Framebuffer, FramebufferAttachment.ColorAttachment0,
TextureTarget.Texture2D, _colorAttachmentRendererID, 0);
_gl.CreateTextures(TextureTarget.Texture2D, 1, out generatedId);
_depthAttachmentRendererID = (RendererID)generatedId;
_gl.BindTexture(TextureTarget.Texture2D, _depthAttachmentRendererID);
_gl.TexStorage2D(TextureTarget.Texture2D, 1, SizedInternalFormat.Depth24Stencil8, _specs.Width,
_specs.Height);
_gl.FramebufferTexture2D(FramebufferTarget.Framebuffer, GLEnum.DepthStencilAttachment,
TextureTarget.Texture2D, _depthAttachmentRendererID, 0);
Logger.Assert(_gl.CheckFramebufferStatus(FramebufferTarget.Framebuffer) == GLEnum.FramebufferComplete,
"Framebuffer is incomplete");
Unbind();
}
public OpenGLTexture2D(GL gl, uint width, uint height)
{
_gl = gl;
_path = "Generated";
_textureTarget = TextureTarget.Texture2D;
_width = width;
_height = height;
_internalFormat = InternalFormat.Rgba8;
_dataFormat = PixelFormat.Rgba;
_gl.CreateTextures(_textureTarget, 1, out uint generatedId);
_rendererID = (RendererID)generatedId;
_gl.TextureStorage2D(_rendererID, 1, (GLEnum)_internalFormat, _width, _height);
Bind();
_gl.TexParameter(_textureTarget, TextureParameterName.TextureWrapS, (int)TextureWrapMode.Repeat);
_gl.TexParameter(_textureTarget, TextureParameterName.TextureWrapT, (int)TextureWrapMode.Repeat);
_gl.TexParameter(_textureTarget, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.Nearest);
_gl.TexParameter(_textureTarget, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Nearest);
}
public OpenGLShader(GL gl, string vertexSource, string fragmentSource)
{
_gl = gl;
uint?vertexShader = CreateShader(ShaderType.VertexShader, vertexSource);
if (!vertexShader.HasValue)
{
return;
}
uint?fragmentShader = CreateShader(ShaderType.FragmentShader, fragmentSource);
if (!fragmentShader.HasValue)
{
return;
}
_rendererID = (RendererID)_gl.CreateProgram();
_gl.AttachShader(_rendererID, vertexShader.Value);
_gl.AttachShader(_rendererID, fragmentShader.Value);
bool result = LinkProgram(_rendererID);
if (!result)
{
_gl.DeleteShader(vertexShader.Value);
_gl.DeleteShader(fragmentShader.Value);
return;
}
_gl.DetachShader(_rendererID, vertexShader.Value);
_gl.DetachShader(_rendererID, fragmentShader.Value);
_gl.DeleteShader(vertexShader.Value);
_gl.DeleteShader(fragmentShader.Value);
GetUniforms();
}
public unsafe OpenGLTexture2D(GL gl, string path)
{
_gl = gl;
_path = path;
_textureTarget = TextureTarget.Texture2D;
Image <Rgba32> img = (Image <Rgba32>)Image.Load(_path);
img.Mutate(x => x.Flip(FlipMode.Vertical));
_width = (uint)img.Width;
_height = (uint)img.Height;
bool withAlpha = img.Metadata.GetPngMetadata().ColorType == PngColorType.RgbWithAlpha;
// TODO: Figure out every possible combination with SixLabors api and create mappings
_internalFormat = withAlpha ? InternalFormat.Rgba8 : InternalFormat.Rgb8;
_dataFormat = withAlpha ? PixelFormat.Rgba : PixelFormat.Rgb;
fixed(void *data = &MemoryMarshal.GetReference(img.GetPixelRowSpan(0)))
{
_gl.CreateTextures(_textureTarget, 1, out uint generatedId);
_rendererID = (RendererID)generatedId;
_gl.TextureStorage2D(_rendererID, 1, (GLEnum)_internalFormat, _width, _height);
Bind();
_gl.TexParameter(_textureTarget, TextureParameterName.TextureWrapS, (int)TextureWrapMode.Repeat);
_gl.TexParameter(_textureTarget, TextureParameterName.TextureWrapT, (int)TextureWrapMode.Repeat);
_gl.TexParameter(_textureTarget, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.Nearest);
_gl.TexParameter(_textureTarget, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Nearest);
_gl.TextureSubImage2D(_rendererID, 0, 0, 0, _width, _height, _dataFormat, PixelType.UnsignedByte, data);
_gl.GenerateMipmap(_textureTarget);
}
img.Dispose();
}
