tolelom
03b1419b17
Introduces GBuffer struct with 4 render target TextureViews (position/ normal/albedo/material) plus depth, and a fullscreen oversized triangle for screen-space passes. Exports format constants and create helpers. Updates lib.rs with new module declarations and re-exports. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
71 lines
2.6 KiB
Rust
71 lines
2.6 KiB
Rust
use crate::gpu::DEPTH_FORMAT;
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pub const GBUFFER_POSITION_FORMAT: wgpu::TextureFormat = wgpu::TextureFormat::Rgba32Float;
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pub const GBUFFER_NORMAL_FORMAT: wgpu::TextureFormat = wgpu::TextureFormat::Rgba16Float;
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pub const GBUFFER_ALBEDO_FORMAT: wgpu::TextureFormat = wgpu::TextureFormat::Rgba8UnormSrgb;
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pub const GBUFFER_MATERIAL_FORMAT: wgpu::TextureFormat = wgpu::TextureFormat::Rgba8Unorm;
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fn create_rt(
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device: &wgpu::Device,
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w: u32,
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h: u32,
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format: wgpu::TextureFormat,
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label: &str,
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) -> wgpu::TextureView {
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let texture = device.create_texture(&wgpu::TextureDescriptor {
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label: Some(label),
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size: wgpu::Extent3d { width: w, height: h, depth_or_array_layers: 1 },
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mip_level_count: 1,
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sample_count: 1,
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dimension: wgpu::TextureDimension::D2,
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format,
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usage: wgpu::TextureUsages::RENDER_ATTACHMENT | wgpu::TextureUsages::TEXTURE_BINDING,
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view_formats: &[],
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});
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texture.create_view(&wgpu::TextureViewDescriptor::default())
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}
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fn create_depth(device: &wgpu::Device, w: u32, h: u32) -> wgpu::TextureView {
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let texture = device.create_texture(&wgpu::TextureDescriptor {
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label: Some("GBuffer Depth Texture"),
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size: wgpu::Extent3d { width: w, height: h, depth_or_array_layers: 1 },
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mip_level_count: 1,
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sample_count: 1,
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dimension: wgpu::TextureDimension::D2,
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format: DEPTH_FORMAT,
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usage: wgpu::TextureUsages::RENDER_ATTACHMENT | wgpu::TextureUsages::TEXTURE_BINDING,
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view_formats: &[],
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});
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texture.create_view(&wgpu::TextureViewDescriptor::default())
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}
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pub struct GBuffer {
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pub position_view: wgpu::TextureView,
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pub normal_view: wgpu::TextureView,
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pub albedo_view: wgpu::TextureView,
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pub material_view: wgpu::TextureView,
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pub depth_view: wgpu::TextureView,
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}
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impl GBuffer {
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pub fn new(device: &wgpu::Device, width: u32, height: u32) -> Self {
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let position_view = create_rt(device, width, height, GBUFFER_POSITION_FORMAT, "GBuffer Position");
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let normal_view = create_rt(device, width, height, GBUFFER_NORMAL_FORMAT, "GBuffer Normal");
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let albedo_view = create_rt(device, width, height, GBUFFER_ALBEDO_FORMAT, "GBuffer Albedo");
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let material_view = create_rt(device, width, height, GBUFFER_MATERIAL_FORMAT, "GBuffer Material");
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let depth_view = create_depth(device, width, height);
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Self {
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position_view,
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normal_view,
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albedo_view,
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material_view,
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depth_view,
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}
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}
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pub fn resize(&mut self, device: &wgpu::Device, width: u32, height: u32) {
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*self = Self::new(device, width, height);
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}
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}
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