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comparison semiconginev2/image.nim @ 1247:c15770761865

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add: gltf loading test, gltf loading for materials
author sam <sam@basx.dev>
date Wed, 24 Jul 2024 23:26:34 +0700
parents e8b3dc80e48e
children 01e9f41d35b1
comparison
equal deleted inserted replaced
1246:356089365076 1247:c15770761865
1 type 1 type
2 Gray* = TVec1[uint8] 2 Gray* = TVec1[uint8]
3 RGBA* = TVec4[uint8] 3 BGRA* = TVec4[uint8]
4 PixelType* = Gray | RGBA 4 PixelType* = Gray | BGRA
5 Image*[T: PixelType] = object 5 Image*[T: PixelType] = object
6 width*: uint32 6 width*: uint32
7 height*: uint32 7 height*: uint32
8 interpolation*: VkFilter = VK_FILTER_LINEAR 8 minInterpolation*: VkFilter = VK_FILTER_LINEAR
9 magInterpolation*: VkFilter = VK_FILTER_LINEAR
10 wrapU: VkSamplerAddressMode = VK_SAMPLER_ADDRESS_MODE_REPEAT
11 wrapV: VkSamplerAddressMode = VK_SAMPLER_ADDRESS_MODE_REPEAT
9 data*: seq[T] 12 data*: seq[T]
10 vk*: VkImage 13 vk*: VkImage
11 imageview*: VkImageView 14 imageview*: VkImageView
12 sampler*: VkSampler 15 sampler*: VkSampler
13 isRenderTarget*: bool = false 16 isRenderTarget*: bool = false
14 samples*: VkSampleCountFlagBits = VK_SAMPLE_COUNT_1_BIT 17 samples*: VkSampleCountFlagBits = VK_SAMPLE_COUNT_1_BIT
15 18
16 proc LoadImage*[T: PixelType](path: string, package = DEFAULT_PACKAGE): Image[T] = 19 proc LoadImage*[T: PixelType](pngData: seq[uint8]): Image[T] =
17 assert path.splitFile().ext.toLowerAscii == ".png"
18 when T is Gray: 20 when T is Gray:
19 let pngType = 0.cint 21 let pngType = 0.cint
20 elif T is RGBA: 22 elif T is BGRA:
21 let pngType = 6.cint 23 let pngType = 6.cint
22 24
23 let indata = loadResource_intern(path, package = package).readAll()
24 var w, h: cuint 25 var w, h: cuint
25 var data: cstring 26 var data: cstring
26 27
27 if lodepng_decode_memory(out_data = addr(data), w = addr(w), h = addr(h), in_data = cstring(indata), insize = csize_t(indata.len), colorType = pngType, bitdepth = 8) != 0: 28 if lodepng_decode_memory(out_data = addr(data), w = addr(w), h = addr(h), in_data = cast[cstring](pngData.ToCPointer), insize = csize_t(pngData.len), colorType = pngType, bitdepth = 8) != 0:
28 raise newException(Exception, "An error occured while loading PNG file") 29 raise newException(Exception, "An error occured while loading PNG file")
29 30
30 let imagesize = w * h * 4 31 let imagesize = w * h * 4
31 result = Image[T](width: w, height: h, data: newSeq[T](w * h)) 32 result = Image[T](width: w, height: h, data: newSeq[T](w * h))
32 copyMem(result.data.ToCPointer, data, imagesize) 33 copyMem(result.data.ToCPointer, data, imagesize)
33 nativeFree(data) 34 nativeFree(data)
34 35
35 when T is RGBA: # converkt to BGRA 36 when T is BGRA: # converkt to BGRA
36 for i in 0 ..< result.data.len: 37 for i in 0 ..< result.data.len:
37 swap(result.data[i][0], result.data[i][2]) 38 swap(result.data[i][0], result.data[i][2])
39
40 proc LoadImage*[T: PixelType](path: string, package = DEFAULT_PACKAGE): Image[T] =
41 assert path.splitFile().ext.toLowerAscii == ".png"
42 when T is Gray:
43 let pngType = 0.cint
44 elif T is BGRA:
45 let pngType = 6.cint
46
47 result = LoadImage[T](loadResource_intern(path, package = package).readAll())
48
38 49
39 proc toPNG[T: PixelType](image: Image[T]): seq[uint8] = 50 proc toPNG[T: PixelType](image: Image[T]): seq[uint8] =
40 when T is Gray: 51 when T is Gray:
41 let pngType = 0 # hardcoded in lodepng.h 52 let pngType = 0 # hardcoded in lodepng.h
42 else: 53 else: