Cursors are now much more robustly detected, and the debug view— previously called the computation texture— now resembles BUF's behind-the-scenes VFX footage. Isolated the isometric camera option from the debug view

TODO.txt

@@ -1,9 +1,13 @@
 TODO:
 
+Create a Resurrections font
+  Icomoon
+  Unicode PUA
+
 Reformulate the basis
   https://buf.com/films/the-matrix-resurrections
   Base cursors and other colors on BUF clip
-    Show this stuff for showComputationTexture
+    Show this stuff for showDebugView
     Pixel grill?
   Tune the colors
   Maybe glow can be an SDF-derived effect instead, look into it
@@ -29,10 +33,6 @@ Playdate version
     https://sdk.play.date/1.12.3/Inside%20Playdate.html#pdxinfo
   Menu later?
 
-Create a Resurrections font
-  Icomoon
-  Unicode PUA
-
 Resurrections
   Support anomaly streaks
     MSDF

js/config.js

@@ -96,6 +96,7 @@ const defaults = {
 	resolution: 0.75, // An overall scale multiplier
 	useHalfFloat: false,
 	renderer: "webgpu", // The preferred web graphics API
+	isometric: false,
 	useHoloplay: false,
 	loops: false,
 };
@@ -308,6 +309,7 @@ const paramMapping = {
 	loops: { key: "loops", parser: (s) => s.toLowerCase().includes("true") },
 	renderer: { key: "renderer", parser: (s) => s },
 	once: { key: "once", parser: (s) => s.toLowerCase().includes("true") },
+	isometric: { key: "isometric", parser: (s) => s.toLowerCase().includes("true") },
 };
 paramMapping.dropLength = paramMapping.raindropLength;
 paramMapping.angle = paramMapping.slant;

js/regl/rainPass.js

@@ -37,13 +37,13 @@ export default ({ regl, config, lkg }) => {
 	const cycleStyle = config.cycleStyleName in cycleStyles ? cycleStyles[config.cycleStyleName] : 0;
 	const slantVec = [Math.cos(config.slant), Math.sin(config.slant)];
 	const slantScale = 1 / (Math.abs(Math.sin(2 * config.slant)) * (Math.sqrt(2) - 1) + 1);
-	const showComputationTexture = config.effect === "none";
+	const showDebugView = config.effect === "none";
 
 	const commonUniforms = {
 		...extractEntries(config, ["animationSpeed", "glyphHeightToWidth", "glyphSequenceLength", "glyphTextureGridSize"]),
 		numColumns,
 		numRows,
-		showComputationTexture,
+		showDebugView,
 	};
 
 	// These two framebuffers are used to compute the raining code.
@@ -182,7 +182,7 @@ export default ({ regl, config, lkg }) => {
 	const screenSize = [1, 1];
 	const { mat4, vec3 } = glMatrix;
 	const transform = mat4.create();
-	if (config.effect === "none") {
+	if (volumetric && config.isometric) {
 		mat4.rotateX(transform, transform, (Math.PI * 1) / 8);
 		mat4.rotateY(transform, transform, (Math.PI * 1) / 4);
 		mat4.translate(transform, transform, vec3.fromValues(0, 0, -1));
@@ -217,7 +217,7 @@ export default ({ regl, config, lkg }) => {
 					const index = column + row * numTileColumns;
 					const camera = mat4.create();
 
-					if (config.effect === "none") {
+					if (volumetric && config.isometric) {
 						if (aspectRatio > 1) {
 							mat4.ortho(camera, -1.5 * aspectRatio, 1.5 * aspectRatio, -1.5, 1.5, -1000, 1000);
 						} else {

js/webgpu/rainPass.js

@@ -18,7 +18,7 @@ const makeConfigBuffer = (device, configUniforms, config, density, gridSize) =>
 		...config,
 		gridSize,
 		density,
-		showComputationTexture: config.effect === "none",
+		showDebugView: config.effect === "none",
 		cycleStyle: config.cycleStyleName in cycleStyles ? cycleStyles[config.cycleStyleName] : 0,
 		rippleType: config.rippleTypeName in rippleTypes ? rippleTypes[config.rippleTypeName] : -1,
 		slantScale: 1 / (Math.abs(Math.sin(2 * config.slant)) * (Math.sqrt(2) - 1) + 1),
@@ -45,7 +45,7 @@ export default ({ config, device, timeBuffer }) => {
 	const numQuads = config.volumetric ? numCells : 1;
 
 	const transform = mat4.create();
-	if (config.effect === "none") {
+	if (config.volumetric && config.isometric) {
 		mat4.rotateX(transform, transform, (Math.PI * 1) / 8);
 		mat4.rotateY(transform, transform, (Math.PI * 1) / 4);
 		mat4.translate(transform, transform, vec3.fromValues(0, 0, -1));
@@ -153,7 +153,7 @@ export default ({ config, device, timeBuffer }) => {
 	const build = (size) => {
 		// Update scene buffer: camera and transform math for the volumetric mode
 		const aspectRatio = size[0] / size[1];
-		if (config.effect === "none") {
+		if (config.volumetric && config.isometric) {
 			if (aspectRatio > 1) {
 				mat4.orthoZO(camera, -1.5 * aspectRatio, 1.5 * aspectRatio, -1.5, 1.5, -1000, 1000);
 			} else {

shaders/glsl/rainPass.frag.glsl

@@ -13,7 +13,7 @@ uniform vec2 glyphTextureGridSize;
 uniform vec2 slantVec;
 uniform float slantScale;
 uniform bool isPolar;
-uniform bool showComputationTexture;
+uniform bool showDebugView;
 uniform bool volumetric;
 
 varying vec2 vUV;
@@ -76,7 +76,7 @@ void main() {
 	brightness = max(shine.b * cursorBrightness, brightness);
 	brightness = max(shine.a, brightness);
 	// In volumetric mode, distant glyphs are dimmer
-	if (volumetric) {
+	if (volumetric && !showDebugView) {
 		brightness = brightness * min(1., vDepth);
 	}
 
@@ -92,12 +92,18 @@ void main() {
 	float sigDist = median3(dist) - 0.5;
 	float alpha = clamp(sigDist/fwidth(sigDist) + 0.5, 0., 1.);
 
-	if (showComputationTexture) {
+	if (showDebugView) {
-		vec4 debugColor = vec4(shine.r - alpha, shine.g * alpha, shine.a - alpha, 1.);
+		brightness *= 2.;
-		if (volumetric) {
+		gl_FragColor = vec4(
-			debugColor.g = debugColor.g * 0.9 + 0.1;
+			vec3(
-		}
+				shine.b,
-		gl_FragColor = debugColor;
+				vec2(
+					brightness,
+					clamp(0., 1., pow(brightness * 0.9, 6.0))
+				) * (1.0 - shine.b)
+			) * alpha,
+			1.
+		);
 	} else {
 		gl_FragColor = vec4(vChannel * brightness * alpha, 1.);
 	}

shaders/glsl/rainPass.shine.frag.glsl

@@ -55,11 +55,11 @@ float getRainTime(float simTime, vec2 glyphPos) {
 		columnSpeedOffset = 0.5;
 	}
 	float columnTime = columnTimeOffset + simTime * fallSpeed * columnSpeedOffset;
-	return (glyphPos.y * 0.01 + columnTime) / raindropLength;
+	return wobble((glyphPos.y * 0.01 + columnTime) / raindropLength);
 }
 
 float getBrightness(float rainTime) {
-	float value = 1. - fract(wobble(rainTime));
+	float value = 1. - fract(rainTime);
 	if (loops) {
 		value = 1. - fract(rainTime);
 	}
@@ -122,10 +122,12 @@ float applyRippleEffect(float effect, float simTime, vec2 screenPos) {
 
 // Main function
 
-vec4 computeResult(float simTime, bool isFirstFrame, vec2 glyphPos, vec2 screenPos, vec4 previous, vec4 previousBelow) {
+vec4 computeResult(float simTime, bool isFirstFrame, vec2 glyphPos, vec2 screenPos, vec4 previous) {
 
 	// Determine the glyph's local time.
 	float rainTime = getRainTime(simTime, glyphPos);
+	float rainTimeBelow = getRainTime(simTime, glyphPos + vec2(0., -1.));
+	float cursor = fract(rainTime) < fract(rainTimeBelow) ? 1.0 : 0.0;
 
 	// Rain time is the backbone of this effect.
 
@@ -139,9 +141,6 @@ vec4 computeResult(float simTime, bool isFirstFrame, vec2 glyphPos, vec2 screenP
 	float effect = 0.;
 	effect = applyRippleEffect(effect, simTime, screenPos); // Round or square ripples across the grid
 
-	float previousBrightnessBelow = previousBelow.r;
-	float cursor = brightness > previousBrightnessBelow ? 1.0 : 0.0;
-
 	// Blend the glyph's brightness with its previous brightness, so it winks on and off organically
 	if (!isFirstFrame) {
 		float previousBrightness = previous.r;
@@ -158,6 +157,5 @@ void main()	{
 	vec2 glyphPos = gl_FragCoord.xy;
 	vec2 screenPos = glyphPos / vec2(numColumns, numRows);
 	vec4 previous = texture2D( previousShineState, screenPos );
-	vec4 previousBelow = texture2D( previousShineState, screenPos + vec2(0., -1. / numRows));
+	gl_FragColor = computeResult(simTime, isFirstFrame, glyphPos, screenPos, previous);
-	gl_FragColor = computeResult(simTime, isFirstFrame, glyphPos, screenPos, previous, previousBelow);
 }

shaders/glsl/rainPass.symbol.frag.glsl

@@ -13,7 +13,7 @@ uniform sampler2D previousSymbolState, shineState;
 uniform float numColumns, numRows;
 uniform float time, tick, cycleFrameSkip;
 uniform float animationSpeed, cycleSpeed;
-uniform bool loops, showComputationTexture;
+uniform bool loops, showDebugView;
 uniform float glyphSequenceLength;
 uniform int cycleStyle;
 

shaders/wgsl/rainPass.wgsl

@@ -8,7 +8,7 @@ struct Config {
 	glyphTextureGridSize : vec2<i32>,
 	glyphHeightToWidth : f32,
 	gridSize : vec2<f32>,
-	showComputationTexture : i32,
+	showDebugView : i32,
 
 	// compute-specific properties
 	brightnessThreshold : f32,
@@ -138,11 +138,11 @@ fn getRainTime(simTime : f32, glyphPos : vec2<f32>) -> f32 {
 		columnSpeedOffset = 0.5;
 	}
 	var columnTime = columnTimeOffset + simTime * config.fallSpeed * columnSpeedOffset;
-	return (glyphPos.y * 0.01 + columnTime) / config.raindropLength;
+	return wobble((glyphPos.y * 0.01 + columnTime) / config.raindropLength);
 }
 
 fn getBrightness(rainTime : f32) -> f32 {
-	var value = 1.0 - fract(wobble(rainTime));
+	var value = 1.0 - fract(rainTime);
 	if (bool(config.loops)) {
 		value = 1.0 - fract(rainTime);
 	}
@@ -213,10 +213,12 @@ fn applyRippleEffect(effect : f32, simTime : f32, screenPos : vec2<f32>) -> f32
 
 // Compute shader main functions
 
-fn computeShine (simTime : f32, isFirstFrame : bool, glyphPos : vec2<f32>, screenPos : vec2<f32>, previous : vec4<f32>, previousBelow : vec4<f32>) -> vec4<f32> {
+fn computeShine (simTime : f32, isFirstFrame : bool, glyphPos : vec2<f32>, screenPos : vec2<f32>, previous : vec4<f32>) -> vec4<f32> {
 
 	// Determine the glyph's local time.
 	var rainTime = getRainTime(simTime, glyphPos);
+	var rainTimeBelow = getRainTime(simTime, glyphPos + vec2<f32>(0., -1.));
+	var cursor = select(0.0, 1.0, fract(rainTime) < fract(rainTimeBelow));
 
 	// Rain time is the backbone of this effect.
 
@@ -234,8 +236,6 @@ fn computeShine (simTime : f32, isFirstFrame : bool, glyphPos : vec2<f32>, scree
 	var effect = 0.0;
 	effect = applyRippleEffect(effect, simTime, screenPos); // Round or square ripples across the grid
 
-	var previousBrightnessBelow = previousBelow.r;
-	var cursor = select(0.0, 1.0, brightness > previousBrightnessBelow);
 
 	// Blend the glyph's brightness with its previous brightness, so it winks on and off organically
 	if (!isFirstFrame) {
@@ -290,17 +290,16 @@ fn computeSymbol (simTime : f32, isFirstFrame : bool, glyphPos : vec2<f32>, scre
 	}
 
 	var i = row * i32(config.gridSize.x) + column;
-	var below = (row - 1) * i32(config.gridSize.x) + column;
 
 	var simTime = time.seconds * config.animationSpeed;
+	var isFirstFrame = time.frames == 0;
 
 	// Update the cell
-	var isFirstFrame = time.frames == 0;
 	var glyphPos = vec2<f32>(f32(column), f32(row));
 	var screenPos = glyphPos / config.gridSize;
 
 	var cell = cells_RW.cells[i];
-	cell.shine = computeShine(simTime, isFirstFrame, glyphPos, screenPos, cell.shine, cells_RW.cells[below].shine);
+	cell.shine = computeShine(simTime, isFirstFrame, glyphPos, screenPos, cell.shine);
 	cell.symbol = computeSymbol(simTime, isFirstFrame, glyphPos, screenPos, cell.symbol, cell.shine);
 	cells_RW.cells[i] = cell;
 }
@@ -442,11 +441,18 @@ fn getSymbolUV(symbol : i32) -> vec2<f32> {
 
 	var output : FragOutput;
 
-	if (bool(config.showComputationTexture)) {
+	if (bool(config.showDebugView)) {
-		output.color = vec4<f32>(cell.shine.r - alpha, cell.shine.g * alpha, cell.shine.a - alpha, 1.0);
+		brightness *= 2.0;
-		if (volumetric) {
+		output.color = vec4<f32>(
-			output.color.g *= 0.9 + 0.1;
+			vec3<f32>(
-		}
+				cell.shine.b,
+				vec2<f32>(
+					brightness,
+					clamp(0.0, 1.0, pow(brightness * 0.9, 6.0))
+				) * (1.0 - cell.shine.b)
+			) * alpha,
+			1.0
+		);
 	} else {
 		output.color = vec4<f32>(input.channel * brightness * alpha, 1.0);
 	}