func (s *System) init(ctx *scene.Context) {
s.cmds = make(chan func(), 4)
go glthread(s.Context, s.cmds)
s.cmds <- s.glsetup
s.stepmu.Lock()
ctx.Stage(scene.OutputStage)
ctx.Declare(meshCol())
ctx.Require(&s.meshes)
s.buckets = make([]renderList, numBuckets)
}
func (s *System) Run(ctx *scene.Context) {
ctx.Stage(scene.LayoutStage)
ctx.Declare(meshCol())
var (
meshes MeshColumn
)
ctx.Require(&meshes)
for ctx.Step() {
}
}
func (c *controlsys) Run(ctx *scene.Context) {
var (
ctls controlColumn
meshes graphics.MeshColumn
)
ctx.Stage(scene.DefaultStage - 1)
ctx.Declare(&controlColumn{
ctls: map[scene.Ref]control{},
meshes: map[scene.Ref]scene.Ref{},
dirty: map[scene.Ref]struct{}{},
})
ctx.Require(&ctls, &meshes)
for ctx.Step() {
dirty := make([]scene.Ref, len(ctls.dirty))
for ref := range ctls.dirty {
ctl := ctls.ctls[ref]
meshref := ctls.meshes[ref]
if meshref == 0 {
meshref = ctx.Alloc(&meshes)
gfx.DefaultVertexAttributes[gfx.VertexPosition] = "Position"
gfx.DefaultVertexAttributes[gfx.VertexColor] = "Color"
gfx.DefaultVertexAttributes[gfx.VertexTexcoord] = "UV"
// diffuse = white texture
// color = white, but by default i guess?
meshes.Add(meshref, graphics.Mesh{
G: graphics.Geometry{geometry.NewBuilder(gfx.DefaultVertexAttributes.Format())},
M: graphics.M().Diffuse(0),
})
ctls.meshes[ref] = meshref
}
g := meshes.ModifyGeom(meshref)
buildRect(g, ctl.Rect)
dirty = append(dirty, ref)
}
for _, ref := range dirty {
delete(ctls.dirty, ref)
}
}
}