Mercurial > games > semicongine

annotate tests/test_materials.nim @ 201:ab626e67a1ee

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add: support for arrays of samplers
author Sam <sam@basx.dev>
date Mon, 08 May 2023 00:38:05 +0700
parents 1ba005328615
children 744285b47a4d
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1 import std/times
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2
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3 import semicongine
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4
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5 proc main() =
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6 var scene = newScene("main", root=newEntity("rect", rect()))
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7 let (R, W) = ([255'u8, 0'u8, 0'u8, 255'u8], [255'u8, 255'u8, 255'u8, 255'u8])
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8 let (RT, WT, PT) = (hexToColorAlpha("A51931").asPixel, hexToColorAlpha("F4F5F8").asPixel, hexToColorAlpha("2D2A4A").asPixel)
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9 let
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10 t1 = TextureImage(width: 5, height: 5, imagedata: @[
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11 R, R, R, R, R,
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12 R, R, W, R, R,
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13 R, W, W, W, R,
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14 R, R, W, R, R,
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15 R, R, R, R, R,
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16 ])
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17 t2 = TextureImage(width: 7, height: 5, imagedata: @[
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18 RT, RT, RT, RT, RT, RT, RT,
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19 WT, WT, WT, WT, WT, WT, WT,
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20 PT, PT, PT, PT, PT, PT, PT,
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21 WT, WT, WT, WT, WT, WT, WT,
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22 RT, RT, RT, RT, RT, RT, RT,
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23 ])
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24 scene.addTextures("my_texture", @[t1, t2])
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25 scene.addShaderGlobal("time", 0'f32)
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26 var m: Mesh = Mesh(scene.root.components[0])
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27
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28 var engine = initEngine("Test materials")
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29 const
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30 vertexInput = @[
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31 attr[Vec3f]("position", memoryPerformanceHint=PreferFastRead),
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32 attr[Vec2f]("uv", memoryPerformanceHint=PreferFastRead),
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33 ]
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34 vertexOutput = @[attr[Vec2f]("uvout")]
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35 uniforms = @[attr[float32]("time")]
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36 samplers = @[attr[Sampler2DType]("my_texture", arrayCount=2)]
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37 fragOutput = @[attr[Vec4f]("color")]
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38 vertexCode = compileGlslShader(
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39 stage=VK_SHADER_STAGE_VERTEX_BIT,
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40 inputs=vertexInput,
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41 uniforms=uniforms,
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42 samplers=samplers,
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43 outputs=vertexOutput,
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44 main="""gl_Position = vec4(position, 1.0); uvout = uv;"""
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45 )
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46 fragmentCode = compileGlslShader(
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47 stage=VK_SHADER_STAGE_FRAGMENT_BIT,
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48 inputs=vertexOutput,
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49 uniforms=uniforms,
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50 samplers=samplers,
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51 outputs=fragOutput,
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52 main="""
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53 float d = sin(Uniforms.time * 0.5) * 0.5 + 0.5;
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54 color = texture(my_texture[0], uvout) * (1 - d) + texture(my_texture[1], uvout) * d;
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55 """
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56 )
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57 engine.setRenderer(engine.gpuDevice.simpleForwardRenderPass(vertexCode, fragmentCode))
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58 engine.addScene(scene, vertexInput)
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59 var t = cpuTime()
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60 while engine.updateInputs() == Running and not engine.keyIsDown(Escape):
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61 setShaderGlobal(scene, "time", float32(cpuTime() - t))
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62 engine.renderScene(scene)
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63 engine.destroy()
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64
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65
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66 when isMainModule:
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67 main()