internal static Background Create()
{
Background background = new Background();
using (var vertexShader = ShaderFactory <VertexShader> .FromSource(Resources.BackgroundVertex))
using (var fragmentShader = ShaderFactory <FragmentShader> .FromSource(Resources.BackgroundFrag))
{
background.program = ShaderProgram.LinkShaders(vertexShader, fragmentShader);
}
background.timeUniform = background.program.GetUniform <FloatUniform>("uTime");
background.viewProjectionUniform = background.program.GetUniform <Mat4Uniform>("uViewProjection");
var vao = VertexArray.Create();
using (var vaoBinding = vao.BindVertexArray())
{
using (var vboBinding = Quad.VertexBuffer.BindBuffer())
{
var positionAttribute = new Vec2Attribute(0u);
vaoBinding.SetAttributePointer(positionAttribute, 0, 0);
vaoBinding.EnableAttribute(positionAttribute);
}
}
background.vao = vao;
return(background);
}
public static BulletBatch Create()
{
var program = CreateProgram();
var timeUniform = program.GetUniform <FloatUniform>("uTime");
var scaleUniform = program.GetUniform <FloatUniform>("uScale");
var vbo = Quad.VertexBuffer;
var ivbo = BufferFactory.Create <ArrayBuffer>((uint)Marshal.SizeOf <Position>() * MAX_BULLETS, null, BufferUsage.StreamDraw);
var vao = CreateVertexArray();
return(new BulletBatch(vao, ivbo, program, timeUniform, scaleUniform));
ShaderProgram CreateProgram()
{
using (var vertexShader = ShaderFactory <VertexShader> .FromSource(Resources.BulletVertex))
using (var fragShader = ShaderFactory <FragmentShader> .FromSource(Resources.BulletFrag))
{
return(ShaderProgram.LinkShaders(vertexShader, fragShader));
}
}
VertexArray CreateVertexArray()
{
var newVao = VertexArray.Create();
using (var vaoBinding = newVao.BindVertexArray())
{
using (var vboBinding = vbo.BindBuffer())
{
var positionAttribute = new Vec2Attribute(0u);
vaoBinding.SetAttributePointer(positionAttribute, 0, 0);
vaoBinding.EnableAttribute(positionAttribute);
}
using (var ivboBinding = ivbo.BindBuffer())
{
var offsetAttribute = new Vec2Attribute(1u);
vaoBinding.SetAttributePointer(offsetAttribute, 0, 0);
vaoBinding.EnableAttribute(offsetAttribute);
vaoBinding.SetAttributeDivisor(offsetAttribute, 1);
}
}
return(newVao);
}
}
internal static ShipBatch Create()
{
ShaderProgram program;
using (var vertexShader = ShaderFactory.FromSource <VertexShader>(Resources.BulletVertex))
using (var fragmentShader = ShaderFactory.FromSource <FragmentShader>(Resources.ShipFrag))
{
program = ShaderProgram.LinkShaders(vertexShader, fragmentShader);
}
var timeUniform = program.GetUniform <FloatUniform>("uTime");
var scaleUniform = program.GetUniform <FloatUniform>("uScale");
var ivbo = BufferFactory.Create <ArrayBuffer>((uint)Marshal.SizeOf <Position>() * MAX_SHIPS, null, BufferUsage.StreamDraw);
var vbo = Triangle.VertexBuffer;
var vertexArray = VertexArray.Create();
using (var vaoBinding = vertexArray.BindVertexArray())
{
using (var vboBinding = vbo.BindBuffer())
{
var positionAttribute = new Vec2Attribute(0u);
vaoBinding.SetAttributePointer(positionAttribute, 0, 0);
vaoBinding.EnableAttribute(positionAttribute);
}
using (var ivboBinding = ivbo.BindBuffer())
{
var offsetAttribute = new Vec2Attribute(1u);
vaoBinding.SetAttributePointer(offsetAttribute, 0, 0);
Gl.VertexAttribDivisor(offsetAttribute.Index, 1u);
vaoBinding.EnableAttribute(offsetAttribute);
}
}
return(new ShipBatch(program, ivbo, vertexArray, timeUniform, scaleUniform));
}
