private void MakeVAO()
{
vbo_xy = new BufferObject <float>(quad_xy, BufferTarget.ArrayBuffer);
ebo_ix = new BufferObject <byte>(quad_el, BufferTarget.ElementArrayBuffer);
vao = new VertexArrayObject();
vao.Bind();
vbo_xy.Bind();
vao.SetAttrib(0, 2, VertexAttribPointerType.Float);
int stride = this.InstanceStride;
var vbo = this.VBO;
vbo.Bind();
vao.SetAttrib(1, 4, VertexAttribPointerType.Float, false, stride, 0, 1);
vao.SetAttrib(2, 4, VertexAttribPointerType.Float, false, stride, 16, 1);
vao.SetAttrib(3, 4, VertexAttribPointerType.Float, false, stride, 32, 1);
vao.SetAttrib(4, 4, VertexAttribPointerType.Float, false, stride, 48, 1);
vao.SetAttrib(5, 4, VertexAttribPointerType.UnsignedByte, true, stride, 64, 1);
vbo.Unbind();
vao.Enable(0);
vao.Enable(1);
vao.Enable(2);
vao.Enable(3);
vao.Enable(4);
vao.Enable(5);
vao.Unbind();
}
/// Constructor.
public Renderer(Display display)
{
this.display = display;
this.spriteBatch = new SpriteBatch(
LoadShaderProgram("vert.glsl", "frag.glsl"),
2048
);
this.rectangleBatch = new RectangleBatch(
LoadShaderProgram("rect.v.glsl", "rect.f.glsl"),
256
);
vboQuadPosition = new BufferObject <float>(quad_xy, BufferTarget.ArrayBuffer);
vboQuadTexcoord = new BufferObject <float>(quad_uv, BufferTarget.ArrayBuffer);
ppVao = new VertexArrayObject();
ppVao.Bind();
vboQuadPosition.Bind();
ppVao.SetAttrib(0, 2, VertexAttribPointerType.Float);
vboQuadTexcoord.Bind();
ppVao.SetAttrib(1, 2, VertexAttribPointerType.Float);
ppVao.Enable(0);
ppVao.Enable(1);
ppVao.Unbind();
ppEbo = new BufferObject <byte>(quad_ix, BufferTarget.ElementArrayBuffer);
frameBuffers = new FrameBuffer[2];
frameBuffers[0] = new FrameBuffer(display.Resolution, PixelFormat.Rgba);
frameBuffers[1] = new FrameBuffer(display.Resolution, PixelFormat.Rgba);
activeFramebuffer = 0;
this.screenBuffer = new FrameBuffer(display.Viewport);
this.blit = LoadShaderProgram("blit.v.glsl", "blit.f.glsl");
this.gray = LoadShaderProgram("blit.v.glsl", "gray.f.glsl");
screenBuffer.SetViewport();
}