mirror of
https://github.com/Nexoniarz/Fry3DX.git
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f3e8eca87b
Shapes with live settings, shape editing, knife and hole tools, drawing shapes onto other objects, combining objects (add / subtract / overlap), copies, thickness, painting with stickers and layers, a Layout tab, a Print tab with checks, packed .fry files with autosave, export to GLB, glTF, FBX, OBJ, 3MF, STL and PLY, folders in Layers, its own crash screen, and a website for GitHub Pages in docs/. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01NMSrd5oe1GpUD7E6d825KP
78 lines
3.5 KiB
GLSL
78 lines
3.5 KiB
GLSL
#version 460
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#define KEEL_POST // screen-space: render targets, sampled clamped
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#include "backend.glsl"
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#include "upsample.glsl"
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// HDR scene → display: ambient occlusion, bloom, exposure, ACES filmic curve, a light grade
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// (saturation, vignette), then sRGB encoding.
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PUSH_BLOCK {
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uint scene;
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float exposure;
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uint ao; // 0 = none
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uint bloom; // 0 = none
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float bloomStrength;
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float saturation;
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float vignette;
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float sharpen; // after TAA: give back a little crispness (0 = none)
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uint depth; // scene depth (1 = sky)
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uint ssr; // reflections to add (when TAA didn't), 0 = none
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uint adapt; // eye adaptation (1×1 exposure multiplier), 0 = none
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uint pad2;
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vec4 shafts; // sun shafts: the sun's uv, strength (0 = none)
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vec4 sunColor;
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} pc;
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// Sun shafts (screen-space light scattering, GPU Gems 3 ch. 13): march towards the sun's spot
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// on screen, adding up how much open sky lies on the way; air lit by the sun glows there,
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// fading with distance from the sun. Started at a per-pixel offset so the steps don't band.
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vec3 sunShafts(vec2 uv) {
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const int N = 32;
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vec2 toSun = pc.shafts.xy - uv;
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vec2 stepUv = toSun * (0.85 / float(N));
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float jitter = fract(52.9829189 * fract(dot(gl_FragCoord.xy, vec2(0.06711056, 0.00583715))));
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vec2 p = uv + stepUv * jitter;
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vec3 lit = vec3(0.0);
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float w = 1.0, total = 0.0;
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for (int i = 0; i < N; ++i, p += stepUv) {
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bool inside = all(greaterThanEqual(p, vec2(0.0))) && all(lessThanEqual(p, vec2(1.0)));
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if (inside && sampleTexLod(pc.depth, p, 0.0).r >= 1.0) // open sky: its light, the sun's brightest
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lit += max(sampleTexLod(pc.scene, p, 0.0).rgb - 1.0, vec3(0.0)) * w;
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total += w;
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w *= 0.97;
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}
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vec2 aspect = vec2(float(texSize(pc.scene).x) / float(texSize(pc.scene).y), 1.0);
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float fall = exp(-length(toSun * aspect) * 1.5);
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return min(lit / total, vec3(8.0)) * fall * pc.shafts.z;
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}
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layout(location = 0) in vec2 v_uv;
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layout(location = 0) out vec4 o_color;
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vec3 aces(vec3 x) {
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return clamp((x * (2.51 * x + 0.03)) / (x * (2.43 * x + 0.59) + 0.14), 0.0, 1.0);
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}
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vec3 toSrgb(vec3 c) {
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return mix(c * 12.92, 1.055 * pow(c, vec3(1.0 / 2.4)) - 0.055, step(0.0031308, c));
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}
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void main() {
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vec3 hdr = sampleTex(pc.scene, v_uv).rgb;
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const ivec2 px = ivec2(v_uv * vec2(texSize(pc.depth)));
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if (pc.ssr != 0u) hdr += upsampleDepthAware(pc.ssr, pc.depth, px).rgb;
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if (pc.sharpen > 0.0) { // unsharp mask against the 4 neighbours, limited so edges don't ring
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vec2 t = 1.0 / vec2(texSize(pc.scene));
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vec3 n = sampleTex(pc.scene, v_uv + vec2(t.x, 0)).rgb + sampleTex(pc.scene, v_uv - vec2(t.x, 0)).rgb
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+ sampleTex(pc.scene, v_uv + vec2(0, t.y)).rgb + sampleTex(pc.scene, v_uv - vec2(0, t.y)).rgb;
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hdr = max(hdr + clamp((hdr - n * 0.25) * pc.sharpen, -0.1 * (hdr + 0.05), 0.1 * (hdr + 0.05)), 0.0);
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}
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if (pc.ao != 0u) hdr *= upsampleDepthAware(pc.ao, pc.depth, px).r;
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if (pc.bloom != 0u) hdr = mix(hdr, sampleTex(pc.bloom, v_uv).rgb, pc.bloomStrength);
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if (pc.shafts.z > 0.0) hdr += sunShafts(v_uv);
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float exposure = pc.exposure * (pc.adapt != 0u ? sampleTexLod(pc.adapt, vec2(0.5), 0.0).r : 1.0);
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vec3 c = aces(hdr * exposure);
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float l = dot(c, vec3(0.2126, 0.7152, 0.0722));
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c = max(mix(vec3(l), c, pc.saturation), 0.0);
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vec2 d = v_uv - 0.5;
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c *= 1.0 - pc.vignette * dot(d, d) * 2.0;
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o_color = vec4(toSrgb(c), 1.0);
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}
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