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refactor chunk rendering and fix chunk rendering precision loss at large positions

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a dinosaur
2024-09-09 02:20:31 +10:00
parent 6e99401474
commit 935aa3e765
8 changed files with 158 additions and 65 deletions
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53
Sources/Voxelotl/Renderer/Renderer.swift
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@ -23,6 +23,7 @@ public class Renderer {
private var depthTextures: [MTLTexture]
//private var _instances: [MTLBuffer?]
private var _cameraPos: SIMD3<Float> = .zero, _directionalDir: SIMD3<Float> = .zero
private var _encoder: MTLRenderCommandEncoder! = nil
@ -381,17 +382,13 @@ public class Renderer {
return ModelBatch(self)
}
internal func setupBatch(material: Material, environment: Environment, camera: Camera) {
internal func setupBatch(environment: Environment, camera: Camera) {
assert(self._encoder != nil, "startBatch can't be called outside of a frame being rendered")
var vertUniforms = VertexShaderUniforms(projView: camera.viewProjection)
var fragUniforms = FragmentShaderUniforms(
cameraPosition: camera.position,
directionalLight: normalize(environment.lightDirection),
ambientColor: SIMD4(material.ambient),
diffuseColor: SIMD4(material.diffuse),
specularColor: SIMD4(material.specular),
specularIntensity: material.gloss)
self._cameraPos = camera.position
self._directionalDir = simd_normalize(environment.lightDirection)
self._encoder.setCullMode(.init(environment.cullFace))
@ -399,12 +396,40 @@ public class Renderer {
self._encoder.setVertexBytes(&vertUniforms,
length: MemoryLayout<VertexShaderUniforms>.stride,
index: VertexShaderInputIdx.uniforms.rawValue)
}
internal func submit(mesh: RendererMesh, instance: ModelBatch.Instance, material: Material) {
assert(self._encoder != nil, "submit can't be called outside of a frame being rendered")
var instanceData = VertexShaderInstance(
model: instance.world,
normalModel: instance.world.inverse.transpose,
color: SIMD4(instance.color))
var fragUniforms = FragmentShaderUniforms(
cameraPosition: self._cameraPos,
directionalLight: self._directionalDir,
ambientColor: SIMD4(material.ambient),
diffuseColor: SIMD4(material.diffuse),
specularColor: SIMD4(material.specular),
specularIntensity: material.gloss)
self._encoder.setVertexBuffer(mesh._vertBuf, offset: 0, index: VertexShaderInputIdx.vertices.rawValue)
// Ideal as long as our uniforms total 4 KB or less
self._encoder.setVertexBytes(&instanceData,
length: MemoryLayout<VertexShaderInstance>.stride,
index: VertexShaderInputIdx.instance.rawValue)
self._encoder.setFragmentBytes(&fragUniforms,
length: MemoryLayout<FragmentShaderUniforms>.stride,
index: FragmentShaderInputIdx.uniforms.rawValue)
self._encoder.drawIndexedPrimitives(
type: .triangle,
indexCount: mesh.numIndices,
indexType: .uint16,
indexBuffer: mesh._idxBuf,
indexBufferOffset: 0)
}
internal func submitBatch(mesh: RendererMesh, instances: [ModelBatch.Instance]) {
internal func submitBatch(mesh: RendererMesh, instances: [ModelBatch.Instance], material: Material) {
assert(self._encoder != nil, "submitBatch can't be called outside of a frame being rendered")
let numInstances = instances.count
assert(numInstances > 0, "submitBatch called with zero instances")
@ -451,12 +476,22 @@ public class Renderer {
normalModel: instance.world.inverse.transpose,
color: SIMD4(instance.color))
}
var fragUniforms = FragmentShaderUniforms(
cameraPosition: self._cameraPos,
directionalLight: self._directionalDir,
ambientColor: SIMD4(material.ambient),
diffuseColor: SIMD4(material.diffuse),
specularColor: SIMD4(material.specular),
specularIntensity: material.gloss)
self._encoder.setVertexBuffer(mesh._vertBuf, offset: 0, index: VertexShaderInputIdx.vertices.rawValue)
// Ideal as long as our uniforms total 4 KB or less
self._encoder.setVertexBytes(instanceData,
length: numInstances * MemoryLayout<VertexShaderInstance>.stride,
index: VertexShaderInputIdx.instance.rawValue)
self._encoder.setFragmentBytes(&fragUniforms,
length: MemoryLayout<FragmentShaderUniforms>.stride,
index: FragmentShaderInputIdx.uniforms.rawValue)
self._encoder.drawIndexedPrimitives(
type: .triangle,