83a1f16806
- BillboardInstance: per-instance uv sub-rect, feet anchor, turn, dithered alpha, flash; BillboardBatch::sharedTexture; Texture createEmpty/update/cellUV/cellAnchor/nearest - SpriteAtlas: fixed-cell runtime atlas with gutters - hd2d::ui: Octopath-style panels, fonts (Cinzel, EB Garamond), dialogue box with typewriter + portraits + choices, menus, nameplates, toasts, ImGui theme - DayCycle (dawn/day/dusk/night keyframes, sun + moon arcs), Weather overcast/mist/ lightning, night-aware presets, stars and moon in the sky - Hidden-window offscreen captures (Window visible=false, Renderer output FBO, OffscreenTarget); --screenshot never opens a window - Camera::worldToScreen; CMake usable via add_subdirectory (HD2D_BUILD_DEMO, HD2D_ENGINE_ASSET_DIR)
64 lines
2.4 KiB
GLSL
64 lines
2.4 KiB
GLSL
#version 450 core
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#include "common.glsl"
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#include "pixelart.glsl"
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in VS {
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vec2 uv;
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vec3 worldPos;
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vec3 pivot;
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vec2 local;
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float tint;
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flat vec2 fx; // alpha, flash
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} v;
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layout(binding = 0) uniform sampler2D uTex;
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uniform int uPass;
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uniform float uEmissive;
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layout(location = 0) out vec4 fragColor;
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const float kFlashWhite = 4.0; // linear HDR white the flash blends toward (blooms)
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// 4x4 ordered (Bayer) threshold in (0, 1): alpha 1 keeps every pixel, 0 none.
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float bayer4(vec2 p) {
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ivec2 i = ivec2(p) & 3;
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const float m[16] = float[](0, 8, 2, 10, 12, 4, 14, 6, 3, 11, 1, 9, 15, 7, 13, 5);
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return (m[i.y * 4 + i.x] + 0.5) / 16.0;
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}
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void main() {
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vec4 c = sharpSample(uTex, v.uv);
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if (c.a < 0.5) discard;
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if (v.fx.x < 1.0 && v.fx.x < bayer4(gl_FragCoord.xy)) discard; // dithered fade, shadows included
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if (uPass == 1) return;
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vec3 up = vec3(0.0, 1.0, 0.0);
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vec3 toCam = cross(uBillboardRight.xyz, up);
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// Sprites are flat cards; a normal leaning upward keeps them readable
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// under top lighting while still responding to light direction.
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vec3 n = normalize(toCam * 0.7 + up * 0.7);
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vec3 L = uSunDir.xyz;
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float ndl = clamp((dot(n, L) + 0.55) / 1.55, 0.0, 1.0);
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// Receive shadows at the matching point on this sprite's own sun-facing
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// shadow card, nudged toward the sun: no self-shadowing, correct
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// occlusion by everything else.
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vec3 sp = v.pivot + uShadowRight.xyz * v.local.x + vec3(0.0, v.local.y, 0.0) + L * 0.22;
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float vis = sunShadow(sp) * canopyCookie(v.worldPos);
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vec3 albedo = c.rgb * v.tint * mix(1.0, 0.8, uWeather.y); // rain-soaked sprites read darker
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float gao = groundAO(v.pivot, v.local.y);
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vec3 light = uSunColor.rgb * uSunDir.w * ndl * vis * mix(1.0, gao, 0.7) + hemiAmbient(n) * gao +
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pointLights(v.worldPos, n);
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// Thin-foliage translucency when the sun is behind the sprite.
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float behind = max(dot(-toCam, L), 0.0);
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light += uSunColor.rgb * uSunDir.w * behind * behind * vis * 0.25;
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vec3 col = albedo * light + albedo * uEmissive;
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if (uBlob.w > 0.0) { // fold the player's contact shadow onto grass sprites too
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float d = length(v.pivot.xz - uBlob.xz) / uBlob.w;
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col *= 1.0 - 0.35 * (1.0 - smoothstep(0.3, 1.0, d)) * (1.0 - clamp(v.local.y / 0.6, 0.0, 1.0));
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}
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col = mix(col, vec3(kFlashWhite), clamp(v.fx.y, 0.0, 1.0)); // hit / capture flash
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fragColor = vec4(col, 1.0);
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}
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