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use shader uniforms for scaling cube

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a dinosaur
2024-08-06 16:51:29 +10:00
parent 10d7f8281c
commit c30ba9a5ca
3 changed files with 21 additions and 3 deletions
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8
Sources/Voxelotl/Renderer.swift
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@ -218,6 +218,10 @@ class Renderer {
}
func paint() throws {
var uniforms = ShaderUniforms(
model: .init(diagonal: .init(0.5, 0.5, 0.5, 1.0)),
projView: matrix_identity_float4x4)
guard let rt = layer.nextDrawable() else {
throw RendererError.drawFailure("Failed to get next drawable render target")
}
@ -239,6 +243,10 @@ class Renderer {
encoder.setVertexBuffer(vtxBuffer,
offset: 0,
index: ShaderInputIdx.vertices.rawValue)
// Ideal as long as our uniforms total 4 KB or less
encoder.setVertexBytes(&uniforms,
length: MemoryLayout<ShaderUniforms>.stride,
index: ShaderInputIdx.uniforms.rawValue)
encoder.drawIndexedPrimitives(
type: .triangle,
indexCount: cubeIndices.count,