ile-de-test/addons/zylann.hterrain/tools/packed_textures/packed_texture_util.gd
2023-10-05 20:02:23 +02:00

86 lines
2.3 KiB
GDScript

@tool
const HT_Logger = preload("../../util/logger.gd")
const HT_Errors = preload("../../util/errors.gd")
const HT_Result = preload("../util/result.gd")
const _transform_params = [
"normalmap_flip_y"
]
# sources: {
# "a": "path_to_image_where_red_channel_will_be_stored_in_alpha.png",
# "rgb": "path_to_image_where_rgb_channels_will_be_stored.png"
# "rgba": "path_to_image.png",
# "rgb": "#hexcolor"
# }
static func generate_image(sources: Dictionary, resolution: int, logger) -> HT_Result:
var image := Image.create(resolution, resolution, true, Image.FORMAT_RGBA8)
var flip_normalmap_y := false
# TODO Accelerate with GDNative
for key in sources:
if key in _transform_params:
continue
var src_path : String = sources[key]
logger.debug(str("Processing source \"", src_path, "\""))
var src_image : Image
if src_path.begins_with("#"):
# Plain color
var col = Color(src_path)
src_image = Image.create(resolution, resolution, false, Image.FORMAT_RGBA8)
src_image.fill(col)
else:
# File
src_image = Image.new()
var err := src_image.load(src_path)
if err != OK:
return HT_Result.new(false, "Could not open file \"{0}\": {1}" \
.format([src_path, HT_Errors.get_message(err)])) \
.with_value(err)
src_image.decompress()
src_image.resize(image.get_width(), image.get_height())
# TODO Support more channel configurations
if key == "rgb":
for y in image.get_height():
for x in image.get_width():
var dst_col := image.get_pixel(x, y)
var a := dst_col.a
dst_col = src_image.get_pixel(x, y)
dst_col.a = a
image.set_pixel(x, y, dst_col)
elif key == "a":
for y in image.get_height():
for x in image.get_width():
var dst_col := image.get_pixel(x, y)
dst_col.a = src_image.get_pixel(x, y).r
image.set_pixel(x, y, dst_col)
elif key == "rgba":
# Meh
image.blit_rect(src_image,
Rect2i(0, 0, image.get_width(), image.get_height()), Vector2i())
if sources.has("normalmap_flip_y") and sources.normalmap_flip_y:
_flip_normalmap_y(image)
return HT_Result.new(true).with_value(image)
static func _flip_normalmap_y(image: Image):
for y in image.get_height():
for x in image.get_width():
var col := image.get_pixel(x, y)
col.g = 1.0 - col.g
image.set_pixel(x, y, col)