Mercurial > games > semicongine

annotate tests/test_gltf.nim @ 1247:c15770761865

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add: gltf loading test, gltf loading for materials
author sam <sam@basx.dev>
date Wed, 24 Jul 2024 23:26:34 +0700
parents
children 317bb5a73606
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1247
c15770761865 add: gltf loading test, gltf loading for materials
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1 import std/os
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2 import std/sequtils
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3 import std/monotimes
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4 import std/times
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5 import std/options
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6 import std/random
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7
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8 import ../semiconginev2
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9
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10 proc test_gltf(time: float32) =
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11 var renderdata = InitRenderData()
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12
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13 type
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14 Material = object
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15 color: Vec4f
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16 colorTexture: int32 = -1
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17 metallic: float32 = -1
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18 roughness: float32 = -1
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19 metallicRoughnessTexture: int32 = -1
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20
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21 normalTexture: int32 = -1
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22 occlusionTexture: int32 = -1
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23 emissive: Vec4f = NewVec4f(-1, -1, -1, -1)
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24 emissiveTexture: int32 = -1
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25 MainDescriptors = object
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26 material: GPUValue[Material, UniformBuffer]
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27 Shader = object
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28 position {.VertexAttribute.}: Vec3f
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29 color {.VertexAttribute.}: Vec4f
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30 uv {.VertexAttribute.}: Vec2f
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31 fragmentColor {.Pass.}: Vec4f
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32 fragmentUv {.Pass.}: Vec2f
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33 outColor {.ShaderOutput.}: Vec4f
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34 descriptors {.DescriptorSets.}: (MainDescriptors, )
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35 # code
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36 vertexCode: string = """
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37 void main() {
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38 fragmentColor = color;
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39 fragmentUv = uv;
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40 gl_Position = vec4(position, 1);
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41 }"""
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42 fragmentCode: string = """void main() { outColor = fragmentColor;}"""
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43 Mesh = object
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44 position: GPUArray[Vec3f, VertexBuffer]
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45 color: GPUArray[Vec4f, VertexBuffer]
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46 uv: GPUArray[Vec2f, VertexBuffer]
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47
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48 let gltfMesh = LoadMeshes[Mesh, Material](
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49 "town.glb",
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50 baseColorFactor = "color",
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51 baseColorTexture = "colorTexture",
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52 metallicFactor = "metallic",
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53 roughnessFactor = "roughness",
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54 metallicRoughnessTexture = "metallicRoughnessTexture",
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55 normalTexture = "normalTexture",
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56 occlusionTexture = "occlusionTexture",
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57 emissiveTexture = "emissiveTexture",
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58 emissiveFactor = "emissive",
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59 )
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60 var mesh = gltfMesh.meshes[0]
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61 renderdata.AssignBuffers(mesh)
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62 renderdata.FlushAllMemory()
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63
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64 var pipeline = CreatePipeline[Shader](renderPass = vulkan.swapchain.renderPass)
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65
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66 var start = getMonoTime()
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67 while ((getMonoTime() - start).inMilliseconds().int / 1000) < time:
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68
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69 WithNextFrame(framebuffer, commandbuffer):
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70
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71 WithRenderPass(vulkan.swapchain.renderPass, framebuffer, commandbuffer, vulkan.swapchain.width, vulkan.swapchain.height, NewVec4f(0, 0, 0, 0)):
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72
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73 WithPipeline(commandbuffer, pipeline):
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74
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75 Render(commandbuffer = commandbuffer, pipeline = pipeline, mesh = mesh)
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76
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77 # cleanup
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78 checkVkResult vkDeviceWaitIdle(vulkan.device)
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79 DestroyPipeline(pipeline)
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80 DestroyRenderData(renderdata)
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81 when isMainModule:
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82 var time = 1'f32
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83 InitVulkan()
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84
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85 var renderpass = CreateDirectPresentationRenderPass(depthBuffer = true, samples = VK_SAMPLE_COUNT_4_BIT)
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86 SetupSwapchain(renderpass = renderpass)
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87
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88 # tests a simple triangle with minimalistic shader and vertex format
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89 test_gltf(time)
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90
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91 checkVkResult vkDeviceWaitIdle(vulkan.device)
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92 vkDestroyRenderPass(vulkan.device, renderpass.vk, nil)
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93 ClearSwapchain()
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94
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95 DestroyVulkan()