Mercurial > games > semicongine

annotate tests/test_mesh.nim @ 706:0936ae49f0c4

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add: correct camera calculations
author Sam <sam@basx.dev>
date Mon, 22 May 2023 19:21:05 +0700
parents 37ef17c96bdb
children dcbd9f256f6a
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1 import semicongine
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2
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3 proc main() =
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4 var scenes = [
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5 loadScene("default_cube.glb", "1"),
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6 loadScene("default_cube1.glb", "3"),
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7 loadScene("default_cube2.glb", "4"),
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8 loadScene("flat.glb", "5"),
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9 loadScene("tutorialk-donat.glb", "6"),
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10 loadScene("personv3.glb", "2"),
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11 ]
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12
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13 var engine = initEngine("Test meshes")
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14 const
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15 vertexInput = @[
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16 attr[Vec3f]("position", memoryPerformanceHint=PreferFastRead),
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17 attr[uint8]("material", memoryPerformanceHint=PreferFastRead),
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18 ]
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19 vertexOutput = @[attr[Vec4f]("vertexColor")]
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20 fragOutput = @[attr[Vec4f]("color")]
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21 uniforms = @[
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22 attr[Mat4]("projection"),
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23 attr[Mat4]("view"),
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24 attr[Mat4]("model"),
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25 attr[Vec4f]("material_color", arrayCount=16),
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26 ]
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27 vertexCode = compileGlslShader(
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28 stage=VK_SHADER_STAGE_VERTEX_BIT,
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29 inputs=vertexInput,
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30 outputs=vertexOutput,
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31 uniforms=uniforms,
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32 main="""gl_Position = Uniforms.projection * Uniforms.view * Uniforms.model * vec4(position, 1.0); vertexColor = Uniforms.material_color[material];"""
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33 )
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34 fragmentCode = compileGlslShader(
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35 stage=VK_SHADER_STAGE_FRAGMENT_BIT,
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36 inputs=vertexOutput,
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37 outputs=fragOutput,
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38 uniforms=uniforms,
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39 main="""color = vertexColor;"""
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40 )
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41 engine.setRenderer(engine.gpuDevice.simpleForwardRenderPass(vertexCode, fragmentCode, clearColor=newVec4f(0, 0, 0, 1)))
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42 for scene in scenes.mitems:
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43 engine.addScene(scene, vertexInput)
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44 scene.addShaderGlobal("projection", Unit4)
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45 scene.addShaderGlobal("view", Unit4)
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46 scene.addShaderGlobal("model", Unit4)
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47 var
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48 size = 1'f32
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49 elevation = -float32(PI) / 3'f32
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50 azimut = 0'f32
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51 currentScene = 0
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52
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53 while engine.updateInputs() == Running and not engine.keyIsDown(Escape):
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54 if engine.keyWasPressed(`1`):
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55 currentScene = 0
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56 elif engine.keyWasPressed(`2`):
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57 currentScene = 1
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58 elif engine.keyWasPressed(`3`):
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59 currentScene = 2
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60 elif engine.keyWasPressed(`4`):
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61 currentScene = 3
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62 elif engine.keyWasPressed(`5`):
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63 currentScene = 4
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64 elif engine.keyWasPressed(`6`):
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65 currentScene = 5
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66
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67 if engine.keyWasPressed(NumberRowExtra3):
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68 size = 1'f32
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69 elevation = -float32(PI) / 3'f32
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70 azimut = 0'f32
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71 var ratio = engine.getWindow().size[0] / engine.getWindow().size[1]
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72
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73 size *= 1'f32 + engine.mouseWheel() * 0.05
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74 azimut += engine.mouseMove().x / 180'f32
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75 elevation -= engine.mouseMove().y / 180'f32
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76 scenes[currentScene].setShaderGlobal("projection", ortho(-ratio, ratio, -1, 1, -1, 1))
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77 scenes[currentScene].setShaderGlobal(
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78 "view",
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79 scale3d(size, size, size) * rotate3d(elevation, newVec3f(1, 0, 0)) * rotate3d(azimut, Yf32)
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80 )
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81 scenes[currentScene].setShaderGlobal("model", Unit4f32)
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82 engine.renderScene(scenes[currentScene])
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83 engine.destroy()
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84
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85
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86 when isMainModule:
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87 main()