Mercurial > games > semicongine

comparison examples/alotof_triangles.nim @ 60:c57285d292b6

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did: deep refactoring of handling vertrex attribute and buffer updates, don't ask ;(
author Sam <sam@basx.dev>
date Sun, 22 Jan 2023 22:46:53 +0700
parents d7d9420ba675
children
comparison
equal deleted inserted replaced
59:d7d9420ba675 60:c57285d292b6
1 import std/times 1 import std/times
2 import std/strutils 2 import std/strutils
3 import std/math 3 import std/math
4 import std/random 4 import std/random
5 import std/enumerate
6 5
7 import semicongine 6 import semicongine
8 7
9 type 8 type
10 VertexDataA = object 9 VertexDataA = object
17 discard 16 discard
18 17
19 proc randomtransform(): Mat33 = 18 proc randomtransform(): Mat33 =
20 let randomscale = scale2d(float32(rand(1.0) + 0.5), float32(rand(1.0) + 0.5)) 19 let randomscale = scale2d(float32(rand(1.0) + 0.5), float32(rand(1.0) + 0.5))
21 let randomrotate = rotate2d(float32(rand(2 * PI))) 20 let randomrotate = rotate2d(float32(rand(2 * PI)))
22 let randomtranslate = translate2d(float32(rand(1.6) - 0.8), float32(rand(1.6) - 0.8)) 21 let randomtranslate = translate2d(float32(rand(1.6) - 0.8), float32(rand(
22 1.6) - 0.8))
23 result = randomtranslate * randomrotate * randomscale 23 result = randomtranslate * randomrotate * randomscale
24 24
25 when isMainModule: 25 when isMainModule:
26 randomize() 26 randomize()
27 var myengine = igniteEngine("A lot of triangles") 27 var myengine = igniteEngine("A lot of triangles")
28 const baseTriangle = [ 28 const baseTriangle = [
29 Vec3([-0.1'f32, -0.1'f32, 1'f32]), 29 Vec3([-0.1'f32, -0.1'f32, 1'f32]),
30 Vec3([ 0.1'f32, 0.1'f32, 1'f32]), 30 Vec3([0.1'f32, 0.1'f32, 1'f32]),
31 Vec3([-0.1'f32, 0.1'f32, 1'f32]), 31 Vec3([-0.1'f32, 0.1'f32, 1'f32]),
32 ] 32 ]
33 33
34 var scene = new Thing 34 var scene = newThing("scene")
35 35
36 for i in 1 .. 300: 36 for i in 1 .. 300:
37 var randommesh = new Mesh[VertexDataA] 37 var randommesh = new Mesh[VertexDataA]
38 let randomcolor1 = Vec3([float32(rand(1)), float32(rand(1)), float32(rand(1))]) 38 let randomcolor1 = Vec3([float32(rand(1)), float32(rand(1)), float32(rand(1))])
39 let transform1 = randomtransform() 39 let transform1 = randomtransform()
41 position11: PositionAttribute[Vec2]( 41 position11: PositionAttribute[Vec2](
42 data: @[ 42 data: @[
43 Vec2(transform1 * baseTriangle[0]), 43 Vec2(transform1 * baseTriangle[0]),
44 Vec2(transform1 * baseTriangle[1]), 44 Vec2(transform1 * baseTriangle[1]),
45 Vec2(transform1 * baseTriangle[2]), 45 Vec2(transform1 * baseTriangle[2]),
46 ] 46 ]
47 ), 47 ),
48 color22: ColorAttribute[Vec3]( 48 color22: ColorAttribute[Vec3](
49 data: @[randomcolor1, randomcolor1, randomcolor1] 49 data: @[randomcolor1, randomcolor1, randomcolor1]
50 ) 50 )
51 ) 51 )
52 52
57 position11: PositionAttribute[Vec2]( 57 position11: PositionAttribute[Vec2](
58 data: @[ 58 data: @[
59 Vec2(transform2 * baseTriangle[0]), 59 Vec2(transform2 * baseTriangle[0]),
60 Vec2(transform2 * baseTriangle[1]), 60 Vec2(transform2 * baseTriangle[1]),
61 Vec2(transform2 * baseTriangle[2]), 61 Vec2(transform2 * baseTriangle[2]),
62 ] 62 ]
63 ), 63 ),
64 color22: ColorAttribute[Vec3]( 64 color22: ColorAttribute[Vec3](
65 data: @[randomcolor2, randomcolor2, randomcolor2] 65 data: @[randomcolor2, randomcolor2, randomcolor2]
66 ) 66 )
67 ) 67 )
68 randomindexedmesh.indices = @[[0'u16, 1'u16, 2'u16]] 68 randomindexedmesh.indices = @[[0'u16, 1'u16, 2'u16]]
69 var childthing = new Thing 69 scene.add newThing("randommesh", randommesh, randomindexedmesh)
70 childthing.parts.add randommesh
71 childthing.parts.add randomindexedmesh
72 scene.children.add childthing
73 70
74 const vertexShader = generateVertexShaderCode[VertexDataA, Uniforms]() 71 const vertexShader = generateVertexShaderCode[VertexDataA, Uniforms]()
75 const fragmentShader = generateFragmentShaderCode[VertexDataA]() 72 const fragmentShader = generateFragmentShaderCode[VertexDataA]()
76 var pipeline = setupPipeline[VertexDataA, float32, uint16]( 73 var pipeline = setupPipeline[VertexDataA, float32, uint16](
77 myengine, 74 myengine,