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comparison examples/input.nim @ 521:a25325bec7f2

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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 cd73e429fc99
children
comparison
equal deleted inserted replaced
520:cd73e429fc99 521:a25325bec7f2
1 import std/strutils
1 import std/times 2 import std/times
2 import std/strutils
3 import std/enumerate
4 3
5 import semicongine 4 import semicongine
6 5
7 type 6 type
8 # define type of vertex 7 # define type of vertex
9 VertexDataA = object 8 VertexDataA = object
10 position: PositionAttribute[Vec2] 9 position: PositionAttribute[Vec2]
11 color: ColorAttribute[Vec3] 10 color: ColorAttribute[Vec3]
12 iscursor: GenericAttribute[int32] 11 # transform: ModelTransformAttribute
12 # TODO: make this somehow a single vertex attribute
13 m1: GenericInstanceAttribute[Vec4]
14 m2: GenericInstanceAttribute[Vec4]
15 m3: GenericInstanceAttribute[Vec4]
16 m4: GenericInstanceAttribute[Vec4]
13 Uniforms = object 17 Uniforms = object
14 projection: Descriptor[Mat44] 18 projection: Descriptor[Mat44]
15 cursor: Descriptor[Vec2] 19 cursor: Descriptor[Vec2]
16 20
17 var 21 var
18 pipeline: RenderPipeline[VertexDataA, Uniforms] 22 pipeline: RenderPipeline[VertexDataA, Uniforms]
19 uniforms: Uniforms 23 uniforms: Uniforms
24 scene: Thing
25 time: float
20 26
21 27
22 proc globalUpdate(engine: var Engine, dt: float32) = 28 proc globalUpdate(engine: var Engine, dt: float32) =
23 uniforms.cursor.value[0] = float32(engine.input.mouseX) 29 time += dt
24 uniforms.cursor.value[1] = float32(engine.input.mouseY) 30 uniforms.cursor.value = engine.input.mousePos
25 uniforms.projection.value = ortho[float32]( 31 uniforms.projection.value = ortho[float32](
26 0'f32, float32(engine.vulkan.frameDimension.width), 32 0'f32, float32(engine.vulkan.frameSize.x),
27 0'f32, float32(engine.vulkan.frameDimension.height), 33 0'f32, float32(engine.vulkan.frameSize.y),
28 0'f32, 1'f32, 34 0'f32, 1'f32,
29 ) 35 )
30 echo uniforms.projection.value 36 engine.vulkan.device.updateUniformData(pipeline, uniforms)
31 # echo uniforms.projection
32 for buffer in pipeline.uniformBuffers:
33 buffer.updateData(uniforms)
34 37
35 # vertex data (types must match the above VertexAttributes) 38 let cursor = firstPartWithName[Mesh[VertexDataA]](scene, "cursor")
39 if cursor != nil:
40 for c in cursor.vertexData.color.data.mitems:
41 c[1] = (sin(time * 8) * 0.5 + 0.5) * 0.2
42 c[2] = (sin(time * 8) * 0.5 + 0.5) * 0.2
43 engine.vulkan.device.updateVertexData(cursor.vertexData.color)
44 var trans = Unit44 * translate3d(engine.input.mousePos.x,
45 engine.input.mousePos.y, 0'f32)
46 cursor.vertexData.m1.data = @[trans.col(0)]
47 cursor.vertexData.m2.data = @[trans.col(1)]
48 cursor.vertexData.m3.data = @[trans.col(2)]
49 cursor.vertexData.m4.data = @[trans.col(3)]
50 engine.vulkan.device.updateVertexData(cursor.vertexData.m1)
51 engine.vulkan.device.updateVertexData(cursor.vertexData.m2)
52 engine.vulkan.device.updateVertexData(cursor.vertexData.m3)
53 engine.vulkan.device.updateVertexData(cursor.vertexData.m4)
54
55
36 const 56 const
37 shape = @[ 57 shape = @[
38 Vec2([- 1'f32, - 1'f32]), 58 Vec2([ - 1'f32, - 1'f32]),
39 Vec2([ 1'f32, - 1'f32]), 59 Vec2([1'f32, - 1'f32]),
40 Vec2([-0.3'f32, -0.3'f32]), 60 Vec2([-0.3'f32, -0.3'f32]),
41 Vec2([-0.3'f32, -0.3'f32]), 61 Vec2([-0.3'f32, -0.3'f32]),
42 Vec2([- 1'f32, 1'f32]), 62 Vec2([ - 1'f32, 1'f32]),
43 Vec2([- 1'f32, - 1'f32]), 63 Vec2([ - 1'f32, - 1'f32]),
44 ] 64 ]
45 colors = @[ 65 colors = @[
46 Vec3([1'f32, 0'f32, 0'f32]), 66 Vec3([1'f32, 0'f32, 0'f32]),
47 Vec3([1'f32, 0'f32, 0'f32]), 67 Vec3([1'f32, 0'f32, 0'f32]),
48 Vec3([1'f32, 0'f32, 0'f32]), 68 Vec3([1'f32, 0'f32, 0'f32]),
52 ] 72 ]
53 73
54 when isMainModule: 74 when isMainModule:
55 var myengine = igniteEngine("Input") 75 var myengine = igniteEngine("Input")
56 76
57 # build a single-object scene graph
58 var cursor = new Thing
59 var cursormesh = new Mesh[VertexDataA] 77 var cursormesh = new Mesh[VertexDataA]
60 cursormesh.vertexData = VertexDataA( 78 cursormesh.vertexData = VertexDataA(
61 position: PositionAttribute[Vec2](data: shape), 79 position: PositionAttribute[Vec2](data: shape, useOnDeviceMemory: true),
62 color: ColorAttribute[Vec3](data: colors), 80 color: ColorAttribute[Vec3](data: colors),
63 iscursor: GenericAttribute[int32](data: @[1'i32, 1'i32, 1'i32, 1'i32, 1'i32, 1'i32]), 81 # transform: ModelTransformAttribute(data: @[Unit44]),
82 m1: GenericInstanceAttribute[Vec4](data: @[Unit44.row(0)]),
83 m2: GenericInstanceAttribute[Vec4](data: @[Unit44.row(1)]),
84 m3: GenericInstanceAttribute[Vec4](data: @[Unit44.row(2)]),
85 m4: GenericInstanceAttribute[Vec4](data: @[Unit44.row(3)]),
64 ) 86 )
65 # transform the cursor a bit to make it look nice 87 # transform the cursor a bit to make it look nice
66 for i in 0 ..< cursormesh.vertexData.position.data.len: 88 for i in 0 ..< cursormesh.vertexData.position.data.len:
67 let cursorscale = ( 89 let cursorscale = (
68 scale2d(20'f32, 20'f32) * 90 scale2d(20'f32, 20'f32) *
69 translate2d(1'f32, 1'f32) * 91 translate2d(1'f32, 1'f32) *
70 rotate2d(-float32(PI) / 4'f32) * 92 rotate2d(-float32(PI) / 4'f32) *
71 scale2d(0.5'f32, 1'f32) * 93 scale2d(0.5'f32, 1'f32) *
72 rotate2d(float32(PI) / 4'f32) 94 rotate2d(float32(PI) / 4'f32)
73 ) 95 )
74 let pos = Vec3([cursormesh.vertexData.position.data[i][0], cursormesh.vertexData.position.data[i][1], 1'f32]) 96 let pos = Vec3([cursormesh.vertexData.position.data[i][0],
97 cursormesh.vertexData.position.data[i][1], 1'f32])
75 cursormesh.vertexData.position.data[i] = (cursorscale * pos).xy 98 cursormesh.vertexData.position.data[i] = (cursorscale * pos).xy
76 cursor.parts.add cursormesh
77 99
78 var box = new Thing
79 var boxmesh = new Mesh[VertexDataA] 100 var boxmesh = new Mesh[VertexDataA]
80 boxmesh.vertexData = VertexDataA( 101 boxmesh.vertexData = VertexDataA(
81 position: PositionAttribute[Vec2](data: shape), 102 position: PositionAttribute[Vec2](data: shape),
82 color: ColorAttribute[Vec3](data: colors), 103 color: ColorAttribute[Vec3](data: colors),
83 iscursor: GenericAttribute[int32](data: @[1'i32, 1'i32, 1'i32, 1'i32, 1'i32, 1'i32]), 104 # transform: ModelTransformAttribute(data: @[Unit44]),
105 m1: GenericInstanceAttribute[Vec4](data: @[Unit44.row(0)]),
106 m2: GenericInstanceAttribute[Vec4](data: @[Unit44.row(1)]),
107 m3: GenericInstanceAttribute[Vec4](data: @[Unit44.row(2)]),
108 m4: GenericInstanceAttribute[Vec4](data: @[Unit44.row(3)]),
84 ) 109 )
110 for i in 0 ..< boxmesh.vertexData.position.data.len:
111 let boxscale = translate2d(100'f32, 100'f32) * scale2d(100'f32, 100'f32)
112 let pos = Vec3([boxmesh.vertexData.position.data[i][0],
113 boxmesh.vertexData.position.data[i][1], 1'f32])
114 boxmesh.vertexData.position.data[i] = (boxscale * pos).xy
115 echo boxmesh.vertexData.position.data
85 116
86 var scene = new Thing 117 scene = newThing("scene")
87 scene.children.add cursor 118 scene.add newThing("cursor", cursormesh)
119 scene.add newThing("a box", boxmesh, newTransform(Unit44), newTransform(
120 translate3d(1'f32, 0'f32, 0'f32)))
121 scene.add newTransform(scale3d(1.5'f32, 1.5'f32, 1.5'f32))
88 122
89 # upload data, prepare shaders, etc 123 # upload data, prepare shaders, etc
90 const vertexShader = generateVertexShaderCode[VertexDataA, Uniforms](""" 124 const vertexShader = generateVertexShaderCode[VertexDataA, Uniforms]("""
91 out_position = uniforms.projection * vec4(in_position + (uniforms.cursor * iscursor), 0, 1); 125 mat4 mat = mat4(m1, m2, m3, m4);
126 out_position = uniforms.projection * mat * vec4(position, 0, 1);
92 """) 127 """)
128 echo vertexShader
93 const fragmentShader = generateFragmentShaderCode[VertexDataA]() 129 const fragmentShader = generateFragmentShaderCode[VertexDataA]()
94 echo vertexShader
95 echo fragmentShader
96 pipeline = setupPipeline[VertexDataA, Uniforms, uint16]( 130 pipeline = setupPipeline[VertexDataA, Uniforms, uint16](
97 myengine, 131 myengine,
98 scene, 132 scene,
99 vertexShader, 133 vertexShader,
100 fragmentShader 134 fragmentShader