Mercurial > games > semicongine

annotate tests/test_materials.nim @ 733:07c755e65a4a

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add: final font-rendering, API changes fixed
author Sam <sam@basx.dev>
date Tue, 30 May 2023 16:59:01 +0700
parents 5f7ec8d1bd33
children da0bd61abe91
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1 import std/times
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2 import std/tables
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3
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4 import semicongine
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5
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6 proc main() =
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7 var scene = newScene("main", root=newEntity("rect", rect()))
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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 # image from memory
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11 t1 = Image(width: 7, height: 5, imagedata: @[
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12 RT, RT, RT, RT, RT, RT, RT,
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13 WT, WT, WT, WT, WT, WT, WT,
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14 PT, PT, PT, PT, PT, PT, PT,
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15 WT, WT, WT, WT, WT, WT, WT,
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16 RT, RT, RT, RT, RT, RT, RT,
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17 ])
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18 let
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19 # image from file
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20 t2 = loadImage("flag.png")
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21
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22 var sampler = DefaultSampler()
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23 sampler.magnification = VK_FILTER_NEAREST
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24 sampler.minification = VK_FILTER_NEAREST
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25 scene.addMaterial(Material(name:"my material", textures: {"my_texture": Texture(image: t1, sampler: sampler)}.toTable))
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26 scene.addMaterial(Material(name:"my material", textures: {"my_texture": Texture(image: t2, sampler: sampler)}.toTable))
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27 scene.addShaderGlobalArray("test2", @[0'f32, 0'f32])
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28
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29 var engine = initEngine("Test materials")
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30
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31 const
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32 vertexInput = @[
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33 attr[Vec3f]("position", memoryPerformanceHint=PreferFastRead),
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34 attr[Vec2f]("uv", memoryPerformanceHint=PreferFastRead),
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35 ]
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36 vertexOutput = @[attr[Vec2f]("uvout")]
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37 uniforms = @[attr[float32]("test2", arrayCount=2)]
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38 samplers = @[attr[Sampler2DType]("my_texture", arrayCount=2)]
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39 fragOutput = @[attr[Vec4f]("color")]
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40 vertexCode = compileGlslShader(
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41 stage=VK_SHADER_STAGE_VERTEX_BIT,
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42 inputs=vertexInput,
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43 uniforms=uniforms,
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44 samplers=samplers,
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45 outputs=vertexOutput,
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46 main="""gl_Position = vec4(position.x, position.y + sin(Uniforms.test2[1]) / Uniforms.test2[1] * 0.5, position.z, 1.0); uvout = uv;"""
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47 )
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48 fragmentCode = compileGlslShader(
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49 stage=VK_SHADER_STAGE_FRAGMENT_BIT,
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50 inputs=vertexOutput,
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51 uniforms=uniforms,
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52 samplers=samplers,
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53 outputs=fragOutput,
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54 main="""
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55 float d = sin(Uniforms.test2[0]) * 0.5 + 0.5;
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56 color = texture(my_texture[0], uvout) * (1 - d) + texture(my_texture[1], uvout) * d;
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57 """
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58 )
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59 engine.setRenderer(engine.gpuDevice.simpleForwardRenderPass(vertexCode, fragmentCode))
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60 engine.addScene(scene, vertexInput, samplers, transformAttribute="")
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61 var t = cpuTime()
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62 while engine.updateInputs() == Running and not engine.keyIsDown(Escape):
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63 var d = float32(cpuTime() - t)
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64 setShaderGlobalArray(scene, "test2", @[d, d * 2])
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65 engine.renderScene(scene)
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66 engine.destroy()
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69 when isMainModule:
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70 main()