44r0n7/deepgrain-foundry
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Lighting on the GPU in the WebGPU path (t88 phase 2b)

Browse Source 
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
44r0n7
2026-10-27 20:01:15 -04:00
co-authored by Claude Opus 5.5
parent fc05146887
commit 31e3005816
11 changed files with 247 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/render/gpu/textures.js
+23 -6
View File
@@ -28,6 +28,10 @@ function gpuWorldTextures() {
GPU.lut = gpuBuffer(tables);
GPU.landData = new Float32Array((W + H) * 4);
GPU.land = gpuBuffer(GPU.landData);
if (GPU.columns) GPU.columns.destroy();
GPU.columnData = new Float32Array(W * 4); GPU.columns = gpuBuffer(GPU.columnData);
GPU.mach = gpuTexture(W, H, 'r16uint'); GPU.block = gpuTexture(BW, BH, 'r8uint');
GPU.worldTextures.push(GPU.mach, GPU.block);
GPU.bindColour = null;
}
function gpuViewTextures() {
@@ -40,15 +44,17 @@ function gpuViewTextures() {
GPU.colourTex = gpuTexture(bw, bh, 'rgba8unorm', true);
GPU.glowTex = gpuTexture(gw, gh, 'rgba8unorm', true);
GPU.blurX = gpuTexture(gw, gh, 'rgba8unorm', true); GPU.blurY = gpuTexture(gw, gh, 'rgba8unorm', true);
GPU.lightTex = gpuTexture(Math.max(1, R.lw), Math.max(1, R.lh));
GPU.viewTextures = [GPU.override, GPU.overrideGlow, GPU.colourTex, GPU.glowTex, GPU.blurX, GPU.blurY, GPU.lightTex];
GPU.lightTex = gpuTexture(Math.max(1, R.lw), Math.max(1, R.lh), 'rgba8unorm', true);
GPU.lightWork = [0,1].map(() => gpuTexture(Math.max(1,R.lw),Math.max(1,R.lh),'rgba16float',true));
GPU.viewTextures = [GPU.override, GPU.overrideGlow, GPU.colourTex, GPU.glowTex, GPU.blurX, GPU.blurY, GPU.lightTex, ...GPU.lightWork];
GPU.bindColour = null;
}
function gpuBindings() {
if (GPU.bindColour) return;
const d = GPU.device, buffer = b => ({ buffer: b }), view = t => t.createView();
const group = (pipeline, resources) => d.createBindGroup({ layout: pipeline.getBindGroupLayout(0), entries: resources.map((resource, binding) => ({ binding, resource })) });
GPU.bindColour = group(GPU.colour, [buffer(GPU.uniform), buffer(GPU.lut), buffer(GPU.land), ...GPU.worldTextures.map(view), view(GPU.override), view(GPU.overrideGlow), view(GPU.colourTex), view(GPU.glowTex)]);
GPU.bindColour = group(GPU.colour, [buffer(GPU.uniform), buffer(GPU.lut), buffer(GPU.land), ...GPU.worldTextures.slice(0,9).map(view), view(GPU.override), view(GPU.overrideGlow), view(GPU.colourTex), view(GPU.glowTex)]);
gpuLightBindings(group, view, buffer);
GPU.bindDraw = group(GPU.draw, [buffer(GPU.uniform), view(GPU.colourTex), view(GPU.lightTex), view(GPU.blurY), GPU.sampler]);
if (GPU.blurUniforms) for (const b of GPU.blurUniforms) b.destroy();
GPU.blurUniforms = [0, 1].map(() => d.createBuffer({ size: 16, usage: GPUBufferUsage.UNIFORM | GPUBufferUsage.COPY_DST }));
@@ -56,11 +62,21 @@ function gpuBindings() {
}
function gpuUpload(lighting, glowOn) {
gpuWorldTextures(); gpuViewTextures(); gpuBindings();
const x = Math.max(0, R.vx0 - 2), y = Math.max(0, R.vy0 - 2);
const w = Math.min(W, R.vx0 + R.bw + 2) - x, h = Math.min(H, R.vy0 + R.bh + 2) - y;
const margin = lighting ? Math.ceil(28 / R.lres) * R.lres + R.lres : 2;
const x = Math.max(0, R.vx0 - margin), y = Math.max(0, R.vy0 - margin);
const w = Math.min(W, R.vx0 + R.bw + margin) - x, h = Math.min(H, R.vy0 + R.bh + margin + 12) - y;
const arrays = [mat, flags, life, part, bgm, digp];
arrays.forEach((a, i) => gpuWrite(GPU.worldTextures[i], a, W, x, y, w, h));
gpuWrite(GPU.temp, temp, W, x, y, w, h);
if (lighting) {
let top=y;
for(let xx=x;xx<x+w;xx++) top=Math.min(top,roofY[xx]);
// Roof scans can start above the view; loose loads also inspect twelve grains below.
for(const [t,a] of [[GPU.worldTextures[0],mat],[GPU.worldTextures[1],flags],[GPU.worldTextures[3],part]]) gpuWrite(t,a,W,x,top,w,y+h-top);
gpuWrite(GPU.mach,mach,W,x,top,w,y+h-top);
const bx=x>>2, by=top>>2;
gpuWrite(GPU.block,blockP,BW,bx,by,Math.min(BW,Math.ceil((x+w)/4))-bx,Math.min(BH,Math.ceil((y+h)/4))-by);
}
const fx = Math.max(0, Math.floor(x / FOG)), fy = Math.max(0, Math.floor(y / FOG));
gpuWrite(GPU.worldTextures[7], fog, FW, fx, fy, Math.min(FW, Math.ceil((x + w) / FOG) + 1) - fx, Math.min(FH, Math.ceil((y + h) / FOG) + 1) - fy);
// Small per-row/column tables may change in scene tools independently of world allocation.
@@ -71,7 +87,8 @@ function gpuUpload(lighting, glowOn) {
q.writeBuffer(GPU.land, 0, land);
gpuWrite(GPU.override, R.px, R.bw, 0, 0, R.bw, R.bh);
gpuWrite(GPU.overrideGlow, R.glowPx, R.glowC.width, 0, 0, R.glowC.width, R.glowC.height);
if (lighting) gpuWrite(GPU.lightTex, R.lightPx, R.lw, 0, 0, R.lw, R.lh);
for(let i=0;i<W;i++) { GPU.columnData[i*4]=surfY[i]; GPU.columnData[i*4+1]=roofY[i]; }
q.writeBuffer(GPU.columns,0,GPU.columnData);
const zp = R.zp, ox = Math.round(-(R.camX - R.vx0) * zp), oy = Math.round(-(R.camY - R.vy0) * zp);
GPU.params.set([R.vx0, R.vy0, R.bw, R.bh, W, H, FW, FH,
+SET.fog, R.rain, SET.grain, R.frame, +R.lens, Math.max(0, Object.keys(THERM).indexOf(SET.thermalPalette)), +SET.incandescence, +glowOn,