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add crunched texture support

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This commit is contained in:
Ishotihadus
2019-12-10 19:05:33 +09:00
parent bd4b10f871
commit 857a0c3fae
8 changed files with 5115 additions and 6 deletions
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lib/mikunyan/decoders/image_decoder.rb
+25 -4
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@@ -7,6 +7,7 @@ rescue LoadError
end
require 'bin_utils'
require 'mikunyan/decoders/native'
require 'mikunyan/decoders/crunch'
module Mikunyan
module Decoder
@@ -70,8 +71,8 @@ module Mikunyan
# when 25 # BC7
# when 26 # BC4
# when 27 # BC5
# when 28 # DXT1Crunched
# when 29 # DXT5Crunched
when 28, 29, 64, 65 # DXT1Crunched, DXT5Crunched, ETC_RGB4Crunched, ETC2_RGBA8Crunched
decode_crunched(width, height, bin)
# when 30 # PVRTC_RGB2
# when 31, -127 # PVRTC_RGBA2, PVRTC_2BPP_RGBA
# when 32 # PVRTC_RGB4
@@ -106,8 +107,6 @@ module Mikunyan
decode_rg16(width, height, bin)
when 63 # R8
decode_a8(width, height, bin)
# when 64 # ETC_RGB4Crunched
# when 65 # ETC2_RGBA8Crunched
end
end
@@ -414,6 +413,28 @@ module Mikunyan
ChunkyPNG::Image.from_rgba_stream(width, height, DecodeHelper.decode_astc(bin, width, height, blocksize, blocksize))
end
# Decode image from crunched texture binary
# @param [Integer] width image width
# @param [Integer] height image height
# @param [String] bin binary to decode
# @return [ChunkyPNG::Image,nil] decoded image
def self.decode_crunched(width, height, bin)
file = Mikunyan::DecodeHelper::CrunchStream.new(bin)
level_info = file.level_info(0)
case level_info.format
when Mikunyan::DecodeHelper::CrunchStream::Format::DXT1
decode_dxt1(width, height, file.unpack_level(0))
when Mikunyan::DecodeHelper::CrunchStream::Format::DXT5
decode_dxt5(width, height, file.unpack_level(0))
when Mikunyan::DecodeHelper::CrunchStream::Format::ETC1
decode_etc1(width, height, file.unpack_level(0))
when Mikunyan::DecodeHelper::CrunchStream::Format::ETC2
decode_etc2rgb(width, height, file.unpack_level(0))
when Mikunyan::DecodeHelper::CrunchStream::Format::ETC2A
decode_etc2rgba8(width, height, file.unpack_level(0))
end
end
# Create ASTC file data from ObjectValue
# @param [Mikunyan::ObjectValue,Hash] object target object
# @return [String,nil] created file