Mercurial > games > semicongine

annotate examples/hello_triangle.nim @ 41:cc8724250d65

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
fix: organize notes a bit
author Sam <sam@basx.dev>
date Wed, 18 Jan 2023 14:15:08 +0700
parents 2771db8d4276
children 94d7eed3f118
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
28
b1b05d4efb52 big refactoring, part1
Sam <sam@basx.dev>
parents: 24
diff changeset
1 import std/times
32
9edca5dc4e93 add: working implementation of uniforms
Sam <sam@basx.dev>
parents: 28
diff changeset
2 import std/strutils
9edca5dc4e93 add: working implementation of uniforms
Sam <sam@basx.dev>
parents: 28
diff changeset
3 import std/enumerate
28
b1b05d4efb52 big refactoring, part1
Sam <sam@basx.dev>
parents: 24
diff changeset
4
40
2771db8d4276 did: rename project
Sam <sam@basx.dev>
parents: 38
diff changeset
5 import semicongine/engine
2771db8d4276 did: rename project
Sam <sam@basx.dev>
parents: 38
diff changeset
6 import semicongine/math/vector
2771db8d4276 did: rename project
Sam <sam@basx.dev>
parents: 38
diff changeset
7 import semicongine/math/matrix
2771db8d4276 did: rename project
Sam <sam@basx.dev>
parents: 38
diff changeset
8 import semicongine/vertex
2771db8d4276 did: rename project
Sam <sam@basx.dev>
parents: 38
diff changeset
9 import semicongine/descriptor
2771db8d4276 did: rename project
Sam <sam@basx.dev>
parents: 38
diff changeset
10 import semicongine/mesh
2771db8d4276 did: rename project
Sam <sam@basx.dev>
parents: 38
diff changeset
11 import semicongine/thing
2771db8d4276 did: rename project
Sam <sam@basx.dev>
parents: 38
diff changeset
12 import semicongine/shader
2771db8d4276 did: rename project
Sam <sam@basx.dev>
parents: 38
diff changeset
13 import semicongine/buffer
0
5daf3f236d87 add: initial version
Sam <sam@basx.dev>
parents:
diff changeset
14
19
b55d6ecde79d did: introduce scene graph, meshs and generic vertex buffers
Sam <sam@basx.dev>
parents: 12
diff changeset
15 type
21
316923e9247c add: clean examples, update build configs
Sam <sam@basx.dev>
parents: 19
diff changeset
16 # define type of vertex
19
b55d6ecde79d did: introduce scene graph, meshs and generic vertex buffers
Sam <sam@basx.dev>
parents: 12
diff changeset
17 VertexDataA = object
32
9edca5dc4e93 add: working implementation of uniforms
Sam <sam@basx.dev>
parents: 28
diff changeset
18 position: PositionAttribute[Vec2[float32]]
9edca5dc4e93 add: working implementation of uniforms
Sam <sam@basx.dev>
parents: 28
diff changeset
19 color: ColorAttribute[Vec3[float32]]
35
7f99b21a8777 add: support for instance data
Sam <sam@basx.dev>
parents: 33
diff changeset
20 id: InstanceAttribute[Vec3[float32]]
32
9edca5dc4e93 add: working implementation of uniforms
Sam <sam@basx.dev>
parents: 28
diff changeset
21
33
94c38e4b5782 did: refactoring, move more from make to nimscript
Sam <sam@basx.dev>
parents: 32
diff changeset
22 var pipeline: RenderPipeline[VertexDataA, void]
28
b1b05d4efb52 big refactoring, part1
Sam <sam@basx.dev>
parents: 24
diff changeset
23
32
9edca5dc4e93 add: working implementation of uniforms
Sam <sam@basx.dev>
parents: 28
diff changeset
24 proc globalUpdate(engine: var Engine, dt: float32) =
33
94c38e4b5782 did: refactoring, move more from make to nimscript
Sam <sam@basx.dev>
parents: 32
diff changeset
25 discard
21
316923e9247c add: clean examples, update build configs
Sam <sam@basx.dev>
parents: 19
diff changeset
26
316923e9247c add: clean examples, update build configs
Sam <sam@basx.dev>
parents: 19
diff changeset
27 # vertex data (types must match the above VertexAttributes)
316923e9247c add: clean examples, update build configs
Sam <sam@basx.dev>
parents: 19
diff changeset
28 const
316923e9247c add: clean examples, update build configs
Sam <sam@basx.dev>
parents: 19
diff changeset
29 triangle_pos = @[
24
71bbe11d8de8 did: change shader compilation to run during program compilation, maybe add dynamic version later
Sam <sam@basx.dev>
parents: 21
diff changeset
30 Vec2([ 0.0'f32, -0.5'f32]),
21
316923e9247c add: clean examples, update build configs
Sam <sam@basx.dev>
parents: 19
diff changeset
31 Vec2([ 0.5'f32, 0.5'f32]),
316923e9247c add: clean examples, update build configs
Sam <sam@basx.dev>
parents: 19
diff changeset
32 Vec2([-0.5'f32, 0.5'f32]),
316923e9247c add: clean examples, update build configs
Sam <sam@basx.dev>
parents: 19
diff changeset
33 ]
316923e9247c add: clean examples, update build configs
Sam <sam@basx.dev>
parents: 19
diff changeset
34 triangle_color = @[
24
71bbe11d8de8 did: change shader compilation to run during program compilation, maybe add dynamic version later
Sam <sam@basx.dev>
parents: 21
diff changeset
35 Vec3([1.0'f32, 0.0'f32, 0.0'f32]),
21
316923e9247c add: clean examples, update build configs
Sam <sam@basx.dev>
parents: 19
diff changeset
36 Vec3([0.0'f32, 1.0'f32, 0.0'f32]),
24
71bbe11d8de8 did: change shader compilation to run during program compilation, maybe add dynamic version later
Sam <sam@basx.dev>
parents: 21
diff changeset
37 Vec3([0.0'f32, 0.0'f32, 1.0'f32]),
21
316923e9247c add: clean examples, update build configs
Sam <sam@basx.dev>
parents: 19
diff changeset
38 ]
0
5daf3f236d87 add: initial version
Sam <sam@basx.dev>
parents:
diff changeset
39
5daf3f236d87 add: initial version
Sam <sam@basx.dev>
parents:
diff changeset
40 when isMainModule:
28
b1b05d4efb52 big refactoring, part1
Sam <sam@basx.dev>
parents: 24
diff changeset
41 var myengine = igniteEngine("Hello triangle")
21
316923e9247c add: clean examples, update build configs
Sam <sam@basx.dev>
parents: 19
diff changeset
42
316923e9247c add: clean examples, update build configs
Sam <sam@basx.dev>
parents: 19
diff changeset
43 # build a mesh
316923e9247c add: clean examples, update build configs
Sam <sam@basx.dev>
parents: 19
diff changeset
44 var trianglemesh = new Mesh[VertexDataA]
316923e9247c add: clean examples, update build configs
Sam <sam@basx.dev>
parents: 19
diff changeset
45 trianglemesh.vertexData = VertexDataA(
32
9edca5dc4e93 add: working implementation of uniforms
Sam <sam@basx.dev>
parents: 28
diff changeset
46 position: PositionAttribute[Vec2[float32]](data: triangle_pos),
9edca5dc4e93 add: working implementation of uniforms
Sam <sam@basx.dev>
parents: 28
diff changeset
47 color: ColorAttribute[Vec3[float32]](data: triangle_color),
35
7f99b21a8777 add: support for instance data
Sam <sam@basx.dev>
parents: 33
diff changeset
48 id: InstanceAttribute[Vec3[float32]](data: @[Vec3[float32]([0.5'f32, 0.5'f32, 0.5'f32])]),
19
b55d6ecde79d did: introduce scene graph, meshs and generic vertex buffers
Sam <sam@basx.dev>
parents: 12
diff changeset
49 )
21
316923e9247c add: clean examples, update build configs
Sam <sam@basx.dev>
parents: 19
diff changeset
50 # build a single-object scene graph
316923e9247c add: clean examples, update build configs
Sam <sam@basx.dev>
parents: 19
diff changeset
51 var triangle = new Thing
316923e9247c add: clean examples, update build configs
Sam <sam@basx.dev>
parents: 19
diff changeset
52 # add the triangle mesh to the object
316923e9247c add: clean examples, update build configs
Sam <sam@basx.dev>
parents: 19
diff changeset
53 triangle.parts.add trianglemesh
19
b55d6ecde79d did: introduce scene graph, meshs and generic vertex buffers
Sam <sam@basx.dev>
parents: 12
diff changeset
54
21
316923e9247c add: clean examples, update build configs
Sam <sam@basx.dev>
parents: 19
diff changeset
55 # upload data, prepare shaders, etc
35
7f99b21a8777 add: support for instance data
Sam <sam@basx.dev>
parents: 33
diff changeset
56 const vertexShader = generateVertexShaderCode[VertexDataA, void]()
32
9edca5dc4e93 add: working implementation of uniforms
Sam <sam@basx.dev>
parents: 28
diff changeset
57 const fragmentShader = generateFragmentShaderCode[VertexDataA]()
38
c3c963e7c1a6 did: tons of stuff, input, refactoring, fix some errors, some template improvment, sorry for super-commit
Sam <sam@basx.dev>
parents: 35
diff changeset
58 pipeline = setupPipeline[VertexDataA, void, void](
19
b55d6ecde79d did: introduce scene graph, meshs and generic vertex buffers
Sam <sam@basx.dev>
parents: 12
diff changeset
59 myengine,
21
316923e9247c add: clean examples, update build configs
Sam <sam@basx.dev>
parents: 19
diff changeset
60 triangle,
32
9edca5dc4e93 add: working implementation of uniforms
Sam <sam@basx.dev>
parents: 28
diff changeset
61 vertexShader,
9edca5dc4e93 add: working implementation of uniforms
Sam <sam@basx.dev>
parents: 28
diff changeset
62 fragmentShader
19
b55d6ecde79d did: introduce scene graph, meshs and generic vertex buffers
Sam <sam@basx.dev>
parents: 12
diff changeset
63 )
21
316923e9247c add: clean examples, update build configs
Sam <sam@basx.dev>
parents: 19
diff changeset
64 # show something
28
b1b05d4efb52 big refactoring, part1
Sam <sam@basx.dev>
parents: 24
diff changeset
65 myengine.run(pipeline, globalUpdate)
b1b05d4efb52 big refactoring, part1
Sam <sam@basx.dev>
parents: 24
diff changeset
66 pipeline.trash()
0
5daf3f236d87 add: initial version
Sam <sam@basx.dev>
parents:
diff changeset
67 myengine.trash()