public GLTextRenderer(GLGraphicsDevice device, Font font, Camera camera)
{
this.colourpicker = (c, i) => this.currentDrawColour;
this.state.Setup();
this.vertexCount = 0;
this.vertices = new Vertex2[dataSize];
this.Camera = camera;
this.glyphs = new Dictionary <uint, TexturedGlyph>();
this.SetupGrahpicsResources(device);
this.SetFont(font);
}
private void SetupGrahpicsResources(GLGraphicsDevice device)
{
this.vertexBuffer.Generate();
this.layout = device.CreateVertexLayout();
var attribute = new VertexAttribute();
attribute.Index = 0;
attribute.Offset = 0;
attribute.Stride = Marshal.SizeOf <Vertex2>();
attribute.Format = VertexAttributeFormat.Vector2f;
attribute.Usage = VertexAttributeUsage.Position;
layout.SetAttribute(attribute);
attribute.Index = 1;
attribute.Offset = Marshal.SizeOf <Vector2>();
attribute.Stride = Marshal.SizeOf <Vertex2>();
attribute.Format = VertexAttributeFormat.Vector2f;
attribute.Usage = VertexAttributeUsage.TextureCoordinate;
layout.SetAttribute(attribute);
attribute.Index = 2;
attribute.Offset = Marshal.SizeOf <Vector2>() * 2;
attribute.Stride = Marshal.SizeOf <Vertex2>();
attribute.Format = VertexAttributeFormat.Vector4f;
attribute.Usage = VertexAttributeUsage.Colour;
layout.SetAttribute(attribute);
var asm = typeof(GLTextRenderer).Assembly;
var vertpath = $"{nameof(GLTextRenderer)}.vert.glsl";
var fragpath = $"{nameof(GLTextRenderer)}.frag.glsl";
this.program = (GLShader)device.CreateShader(ShaderFormat.GLSL, asm.GetManifestResourceStream(vertpath), asm.GetManifestResourceStream(fragpath));
this.program.SetVertexData(this.vertexBuffer, this.layout);
this.fontTexture = device.CreateTexture2D(new Vector2i(1024, 2048), PixelFormat.GrayScale);
this.fontTexture.Filter = TextureFilter.Linear;
this.program.SetUniform("Texture", this.fontTexture, 0);
}