120 lines
3.3 KiB
JavaScript
120 lines
3.3 KiB
JavaScript
/**
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* The default coloration shader used by standard rendering and animations.
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* A fragment shader which creates a solid light source.
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*/
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class AdaptiveDarknessShader extends AdaptiveLightingShader {
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/** @override */
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update() {
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super.update();
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this.uniforms.darknessLevel = canvas.environment.darknessLevel;
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}
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/* -------------------------------------------- */
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/**
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* Flag whether the darkness shader is currently required.
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* Check vision modes requirements first, then
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* if key uniforms are at their default values, we don't need to render the background container.
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* @type {boolean}
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*/
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get isRequired() {
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const vs = canvas.visibility.lightingVisibility;
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// Checking if darkness layer is disabled
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if ( vs.darkness === VisionMode.LIGHTING_VISIBILITY.DISABLED ) return false;
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// Otherwise, returns true in every circumstances
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return true;
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}
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/* -------------------------------------------- */
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/* GLSL Statics */
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/* -------------------------------------------- */
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/** @override */
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static defaultUniforms = {
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intensity: 5,
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color: Color.from("#8651d5").rgb,
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screenDimensions: [1, 1],
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time: 0,
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primaryTexture: null,
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depthTexture: null,
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visionTexture: null,
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darknessLevelTexture: null,
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depthElevation: 1,
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ambientBrightest: [1, 1, 1],
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ambientDarkness: [0, 0, 0],
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ambientDaylight: [1, 1, 1],
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weights: [0, 0, 0, 0],
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dimLevelCorrection: 1,
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brightLevelCorrection: 2,
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borderDistance: 0,
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darknessLevel: 0,
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computeIllumination: false,
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globalLight: false,
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globalLightThresholds: [0, 0],
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enableVisionMasking: false
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};
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static {
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const initial = foundry.data.LightData.cleanData();
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this.defaultUniforms.intensity = initial.animation.intensity;
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}
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/* -------------------------------------------- */
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/**
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* Shader final
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* @type {string}
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*/
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static FRAGMENT_END = `
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gl_FragColor = vec4(finalColor, 1.0) * depth;
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`;
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/* -------------------------------------------- */
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/**
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* Initialize fragment with common properties
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* @type {string}
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*/
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static FRAGMENT_BEGIN = `
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${this.COMPUTE_ILLUMINATION}
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float dist = distance(vUvs, vec2(0.5)) * 2.0;
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vec4 depthColor = texture2D(depthTexture, vSamplerUvs);
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float depth = smoothstep(0.0, 1.0, vDepth) *
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step(depthColor.g, depthElevation) *
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step(depthElevation, (254.5 / 255.0) - depthColor.r) *
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(enableVisionMasking ? 1.0 - step(texture2D(visionTexture, vSamplerUvs).r, 0.0) : 1.0) *
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(1.0 - smoothstep(borderDistance, 1.0, dist));
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vec4 baseColor = texture2D(primaryTexture, vSamplerUvs);
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vec3 finalColor = baseColor.rgb;
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`;
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/* -------------------------------------------- */
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/**
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* Memory allocations for the Adaptive Background Shader
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* @type {string}
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*/
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static SHADER_HEADER = `
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${this.FRAGMENT_UNIFORMS}
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${this.VERTEX_FRAGMENT_VARYINGS}
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${this.FRAGMENT_FUNCTIONS}
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${this.CONSTANTS}
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`;
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/* -------------------------------------------- */
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/** @inheritdoc */
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static fragmentShader = `
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${this.SHADER_HEADER}
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${this.PERCEIVED_BRIGHTNESS}
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void main() {
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${this.FRAGMENT_BEGIN}
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finalColor *= (mix(color, color * 0.33, darknessLevel) * colorationAlpha);
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${this.FRAGMENT_END}
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}`;
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}
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