protected override void OnLoad()
{
// The font factory allows us to extract the font information and construct a font texture using the
// System.Drawing library.
var systemFont = new System.Drawing.Font(FontFamily.GenericSansSerif, 64, GraphicsUnit.Pixel);
var(textureData, font) = FontFactory.From(systemFont, 1);
fontTexture = textureData.ToTexture(t =>
{
t.SetFilterMode(TextureMinFilter.LinearMipmapLinear, TextureMagFilter.Nearest);
t.GenerateMipmap();
});
// We set up a mesh builder, and renderer as usual. We bind the font texture from the font loading into the
// shader.
meshBuilder = new ExpandingIndexedTrianglesMeshBuilder <UVVertexData>();
var renderable = meshBuilder.ToRenderable();
shaderProgram = ShaderProgram.FromShaders(
ShaderFactory.Vertex.FromFile("text.vs"), ShaderFactory.Fragment.FromFile("text.fs"));
renderer = BatchedRenderer.From(renderable, shaderProgram,
new TextureUniform("fontTexture", TextureUnit.Texture0, fontTexture));
// The text drawer is a helper class to help us draw text assuming that it will be rendered with the right
// font texture bound.
var textDrawer =
new TextDrawer <UVVertexData, Void>(font, meshBuilder, (p, uv, _) => new UVVertexData(p, uv));
textDrawer.DrawLine(
Vector3.Zero, "Hello World!",
64, 0.5f, 0.5f,
Vector3.UnitX * 2 / 1280, -Vector3.UnitY * 2 / 720,
default);
}