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local gl = honey.gl
local module = {}
setmetatable(module, {__index=_G})
setfenv(1, module)
function Image(filename, params)
local params = params or {}
local data, width, height = honey.image.load(filename, 4)
local self = {}
self.width = width
self.height = height
self.texture = gl.GenTextures()
gl.BindTexture(gl.TEXTURE_2D, self.texture)
for param, value in pairs(params) do
gl.TexParameteri(gl.TEXTURE_2D, gl[param], value)
end
gl.TexImage2D(
gl.TEXTURE_2D, 0,
gl.RGBA, width, height,
gl.RGBA, gl.UNSIGNED_BYTE, data
)
gl.GenerateMipmap(gl.TEXTURE_2D)
honey.image.destroy(data)
self.__gc = honey.util.gc_canary(function()
gl.DeleteTextures(self.texture)
end)
return self
end
local cache = {}
function loadImage(filename, params)
if not cache[filename] then
local img = Image(filename, params)
cache[filename] = img
return img
end
return cache[filename]
end
function clearImageCache()
cache = {}
end
return module
|
