The attribute contains a table with the name and attributes for the specific render effect being applied. Currently the following effects are defined:
blur, geometry
This effect will add a blur to the contents of the layer. The following blur attributes are defined:
Parameters:
passes This is a number value which is the number of blur passes
composite This is a boolean value. When true the blur will be applied to the final composition
of this layer with the framebuffer content. If false the blur is only applied to the
layer content.
radius This is a number value which defined the radius of the blur effect in pixels
Example:
function cbBlurEffect(mapargs)
local attrs = {}
local effect = {}
effect["name"] = "blur"
effect["passes"] = 2
effect["radius"] = 1
effect["composite"] = false
attrs["effect"] = effect
gre.set_layer_attrs("background.control1",attrs)
end
This effect will allow custom OpenGL ES geometry to be applied to the rendering of the control or layer. This includes custom vertices and UV coordinates. The following attributes are defined:
Parameters:
width The viewport width for the content
height The viewport height for the content
type The type of primitive to render: fan | triangles
nvert The number of vertex coordinates. Options are 2 (x,y) and 3 (x, y, z)
nuv The number of UV coordinates. Options are 2 or 0
data The table containing the vertex data
Example:
function cbSetGeometry(mapargs)
local gdata = {}
local dz = 0.0
local offset = mapargs.offset
local dz2 = -offset
local w
local h = 240
dz2 = -offset
w = 320 - offset
gdata = {
{x=w/2, y=h/2, z=dz2, u=0.5, v=0.5},
{x=w, y=0, z=dz, u=1.0, v=0},
{x=w/2, y=0, z=dz2, u=0.5, v=0},
{x=0, y=0, z=dz, u=0, v=0},
{x=0, y=h, z=dz, u=0, v=1.0},
{x=w/2, y=h, z=dz2, u=0.5, v=1.0},
{x=w, y=h, z=dz, u=1.0, v=1.0},
{x=w, y=0, z=dz, u=1.0, v=0},
}
local attrs = {}
attrs["geometry"] = {
width = w,
height = h,
type = "fan",
nvert = 3,
nuv = 2,
data = gdata
}
gre.set_layer_attrs("geometry.layer3",attrs)
end