Mercurial > games > semicongine

annotate examples/E02_squares.nim @ 739:5cd6808150fc

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
did: adjust for small API change
author Sam <sam@basx.dev>
date Sat, 03 Jun 2023 13:44:17 +0700
parents dcc12ab20a91
children a4c757f5d17f
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
597
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
1 import std/sequtils
522
f2c97bdbb0b3 did: rename and update older demos to work with new APIs
Sam <sam@basx.dev>
parents:
diff changeset
2 import std/random
f2c97bdbb0b3 did: rename and update older demos to work with new APIs
Sam <sam@basx.dev>
parents:
diff changeset
3
732
dcc12ab20a91 did: fix API changes broke examples
Sam <sam@basx.dev>
parents: 714
diff changeset
4 import ../src/semicongine
522
f2c97bdbb0b3 did: rename and update older demos to work with new APIs
Sam <sam@basx.dev>
parents:
diff changeset
5
f2c97bdbb0b3 did: rename and update older demos to work with new APIs
Sam <sam@basx.dev>
parents:
diff changeset
6
f2c97bdbb0b3 did: rename and update older demos to work with new APIs
Sam <sam@basx.dev>
parents:
diff changeset
7 when isMainModule:
f2c97bdbb0b3 did: rename and update older demos to work with new APIs
Sam <sam@basx.dev>
parents:
diff changeset
8 randomize()
f2c97bdbb0b3 did: rename and update older demos to work with new APIs
Sam <sam@basx.dev>
parents:
diff changeset
9 const
f2c97bdbb0b3 did: rename and update older demos to work with new APIs
Sam <sam@basx.dev>
parents:
diff changeset
10 COLUMNS = 10
f2c97bdbb0b3 did: rename and update older demos to work with new APIs
Sam <sam@basx.dev>
parents:
diff changeset
11 ROWS = 10
f2c97bdbb0b3 did: rename and update older demos to work with new APIs
Sam <sam@basx.dev>
parents:
diff changeset
12 WIDTH = 2'f32 / COLUMNS
f2c97bdbb0b3 did: rename and update older demos to work with new APIs
Sam <sam@basx.dev>
parents:
diff changeset
13 HEIGHT = 2'f32 / ROWS
f2c97bdbb0b3 did: rename and update older demos to work with new APIs
Sam <sam@basx.dev>
parents:
diff changeset
14 var
597
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
15 vertices: array[COLUMNS * ROWS * 4, Vec3f]
671
d84b2e88776a fix: always use rgba
Sam <sam@basx.dev>
parents: 665
diff changeset
16 colors: array[COLUMNS * ROWS * 4, Vec4f]
522
f2c97bdbb0b3 did: rename and update older demos to work with new APIs
Sam <sam@basx.dev>
parents:
diff changeset
17 iValues: array[COLUMNS * ROWS * 4, uint32]
f2c97bdbb0b3 did: rename and update older demos to work with new APIs
Sam <sam@basx.dev>
parents:
diff changeset
18 indices: array[COLUMNS * ROWS * 2, array[3, uint16]]
f2c97bdbb0b3 did: rename and update older demos to work with new APIs
Sam <sam@basx.dev>
parents:
diff changeset
19
f2c97bdbb0b3 did: rename and update older demos to work with new APIs
Sam <sam@basx.dev>
parents:
diff changeset
20 for row in 0 ..< ROWS:
f2c97bdbb0b3 did: rename and update older demos to work with new APIs
Sam <sam@basx.dev>
parents:
diff changeset
21 for col in 0 ..< COLUMNS:
f2c97bdbb0b3 did: rename and update older demos to work with new APIs
Sam <sam@basx.dev>
parents:
diff changeset
22 let
f2c97bdbb0b3 did: rename and update older demos to work with new APIs
Sam <sam@basx.dev>
parents:
diff changeset
23 y: float32 = (row * 2 / COLUMNS) - 1
f2c97bdbb0b3 did: rename and update older demos to work with new APIs
Sam <sam@basx.dev>
parents:
diff changeset
24 x: float32 = (col * 2 / ROWS) - 1
671
d84b2e88776a fix: always use rgba
Sam <sam@basx.dev>
parents: 665
diff changeset
25 color = newVec4f((x + 1) / 2, (y + 1) / 2, 0, 1)
522
f2c97bdbb0b3 did: rename and update older demos to work with new APIs
Sam <sam@basx.dev>
parents:
diff changeset
26 squareIndex = row * COLUMNS + col
f2c97bdbb0b3 did: rename and update older demos to work with new APIs
Sam <sam@basx.dev>
parents:
diff changeset
27 vertIndex = squareIndex * 4
597
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
28 vertices[vertIndex + 0] = newVec3f(x, y)
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
29 vertices[vertIndex + 1] = newVec3f(x + WIDTH, y)
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
30 vertices[vertIndex + 2] = newVec3f(x + WIDTH, y + HEIGHT)
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
31 vertices[vertIndex + 3] = newVec3f(x, y + HEIGHT)
522
f2c97bdbb0b3 did: rename and update older demos to work with new APIs
Sam <sam@basx.dev>
parents:
diff changeset
32 colors[vertIndex + 0] = color
f2c97bdbb0b3 did: rename and update older demos to work with new APIs
Sam <sam@basx.dev>
parents:
diff changeset
33 colors[vertIndex + 1] = color
f2c97bdbb0b3 did: rename and update older demos to work with new APIs
Sam <sam@basx.dev>
parents:
diff changeset
34 colors[vertIndex + 2] = color
f2c97bdbb0b3 did: rename and update older demos to work with new APIs
Sam <sam@basx.dev>
parents:
diff changeset
35 colors[vertIndex + 3] = color
f2c97bdbb0b3 did: rename and update older demos to work with new APIs
Sam <sam@basx.dev>
parents:
diff changeset
36 iValues[vertIndex + 0] = uint32(squareIndex)
f2c97bdbb0b3 did: rename and update older demos to work with new APIs
Sam <sam@basx.dev>
parents:
diff changeset
37 iValues[vertIndex + 1] = uint32(squareIndex)
f2c97bdbb0b3 did: rename and update older demos to work with new APIs
Sam <sam@basx.dev>
parents:
diff changeset
38 iValues[vertIndex + 2] = uint32(squareIndex)
f2c97bdbb0b3 did: rename and update older demos to work with new APIs
Sam <sam@basx.dev>
parents:
diff changeset
39 iValues[vertIndex + 3] = uint32(squareIndex)
597
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
40 indices[squareIndex * 2 + 0] = [uint16(vertIndex + 0), uint16(vertIndex + 1), uint16(vertIndex + 2)]
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
41 indices[squareIndex * 2 + 1] = [uint16(vertIndex + 2), uint16(vertIndex + 3), uint16(vertIndex + 0)]
522
f2c97bdbb0b3 did: rename and update older demos to work with new APIs
Sam <sam@basx.dev>
parents:
diff changeset
42
f2c97bdbb0b3 did: rename and update older demos to work with new APIs
Sam <sam@basx.dev>
parents:
diff changeset
43
597
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
44 const
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
45 vertexInput = @[
624
3f13de7d8ec4 fix: API change for shader attributes
Sam <sam@basx.dev>
parents: 609
diff changeset
46 attr[Vec3f]("position"),
671
d84b2e88776a fix: always use rgba
Sam <sam@basx.dev>
parents: 665
diff changeset
47 attr[Vec4f]("color", memoryPerformanceHint=PreferFastWrite),
624
3f13de7d8ec4 fix: API change for shader attributes
Sam <sam@basx.dev>
parents: 609
diff changeset
48 attr[uint32]("index"),
597
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
49 ]
671
d84b2e88776a fix: always use rgba
Sam <sam@basx.dev>
parents: 665
diff changeset
50 vertexOutput = @[attr[Vec4f]("outcolor")]
597
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
51 uniforms = @[attr[float32]("time")]
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
52 fragOutput = @[attr[Vec4f]("color")]
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
53 vertexCode = compileGlslShader(
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
54 stage=VK_SHADER_STAGE_VERTEX_BIT,
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
55 inputs=vertexInput,
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
56 uniforms=uniforms,
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
57 outputs=vertexOutput,
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
58 main="""
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
59 float pos_weight = index / 100.0; // add some gamma correction?
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
60 float t = sin(Uniforms.time * 0.5) * 0.5 + 0.5;
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
61 float v = min(1, max(0, pow(pos_weight - t, 2)));
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
62 v = pow(1 - v, 3000);
671
d84b2e88776a fix: always use rgba
Sam <sam@basx.dev>
parents: 665
diff changeset
63 outcolor = vec4(color.r, color.g, v * 0.5, 1);
597
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
64 gl_Position = vec4(position, 1.0);
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
65 """
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
66 )
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
67 fragmentCode = compileGlslShader(
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
68 stage=VK_SHADER_STAGE_FRAGMENT_BIT,
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
69 inputs=vertexOutput,
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
70 uniforms=uniforms,
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
71 outputs=fragOutput,
671
d84b2e88776a fix: always use rgba
Sam <sam@basx.dev>
parents: 665
diff changeset
72 main="color = outcolor;"
597
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
73 )
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
74 var squaremesh = newMesh(
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
75 positions=vertices,
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
76 indices=indices,
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
77 colors=colors,
522
f2c97bdbb0b3 did: rename and update older demos to work with new APIs
Sam <sam@basx.dev>
parents:
diff changeset
78 )
597
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
79 setMeshData[uint32](squaremesh, "index", iValues.toSeq)
522
f2c97bdbb0b3 did: rename and update older demos to work with new APIs
Sam <sam@basx.dev>
parents:
diff changeset
80
597
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
81 var myengine = initEngine("Squares")
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
82 myengine.setRenderer(myengine.gpuDevice.simpleForwardRenderPass(vertexCode, fragmentCode))
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
83
664
c33c8e156e3e did: update examples to use new API for scene + scene globals
Sam <sam@basx.dev>
parents: 624
diff changeset
84 var scene = newScene("scene", newEntity("scene", newEntity("squares", squaremesh)))
739
5cd6808150fc did: adjust for small API change
Sam <sam@basx.dev>
parents: 732
diff changeset
85 myengine.addScene(scene, vertexInput, @[], transformAttribute="")
664
c33c8e156e3e did: update examples to use new API for scene + scene globals
Sam <sam@basx.dev>
parents: 624
diff changeset
86 scene.addShaderGlobal("time", 0.0'f32)
606
f41c1b78cf5b add: upgrade all simple examples to new engine version
Sam <sam@basx.dev>
parents: 600
diff changeset
87 while myengine.updateInputs() == Running and not myengine.keyWasPressed(Escape):
664
c33c8e156e3e did: update examples to use new API for scene + scene globals
Sam <sam@basx.dev>
parents: 624
diff changeset
88 setShaderGlobal(scene, "time", getShaderGlobal[float32](scene, "time") + 0.0005'f)
597
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
89 myengine.renderScene(scene)
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
90
fdae5f50fa00 did: rewrite example 02 with new engine approach
Sam <sam@basx.dev>
parents: 535
diff changeset
91 myengine.destroy()