diff options
Diffstat (limited to 'ghostty/shaders/sonic_boom_cursor.glsl')
| -rw-r--r-- | ghostty/shaders/sonic_boom_cursor.glsl | 148 |
1 files changed, 0 insertions, 148 deletions
diff --git a/ghostty/shaders/sonic_boom_cursor.glsl b/ghostty/shaders/sonic_boom_cursor.glsl deleted file mode 100644 index 39355d1..0000000 --- a/ghostty/shaders/sonic_boom_cursor.glsl +++ /dev/null @@ -1,148 +0,0 @@ -// CONFIGURATION -const float DURATION = 0.15; // How long the ripple animates (seconds) -const float MAX_RADIUS = 0.06; // Max radius in normalized coords (0.5 = 1/4 screen height) -const float ANIMATION_START_OFFSET = 0.0; // Start the ripple slightly progressed (0.0 - 1.0) -vec4 COLOR = vec4(0.35, 0.36, 0.44, 1.0); // change to iCurrentCursorColor for your cursor's color -const float CURSOR_WIDTH_CHANGE_THRESHOLD = 0.5; // Triggers ripple if cursor width changes by this fraction -const float BLUR = 3.0; // Blur level in pixels - - -// Easing functions -float easeOutQuad(float t) { - return 1.0 - (1.0 - t) * (1.0 - t); -} -float easeInOutQuad(float t) { - return t < 0.5 ? 2.0 * t * t : 1.0 - pow(-2.0 * t + 2.0, 2.0) / 2.0; -} -float easeOutCubic(float t) { - return 1.0 - pow(1.0 - t, 3.0); -} -float easeOutQuart(float t) { - return 1.0 - pow(1.0 - t, 4.0); -} -float easeOutQuint(float t) { - return 1.0 - pow(1.0 - t, 5.0); -} -float easeOutExpo(float t) { - return t == 1.0 ? 1.0 : 1.0 - pow(2.0, -10.0 * t); -} -float easeOutCirc(float t) { - return sqrt(1.0 - pow(t - 1.0, 2.0)); -} -float easeOutSine(float t) { - return sin((t * 3.1415916) / 2.0); -} -float easeOutElastic(float t) { - const float c4 = (2.0 * 3.1415916) / 3.0; - return t == 0.0 ? 0.0 : t == 1.0 ? 1.0 : pow(2.0, -10.0 * t) * sin((t * 10.0 - 0.75) * c4) + 1.0; -} -float easeOutBounce(float t) { - const float n1 = 7.5625; - const float d1 = 2.75; - if (t < 1.0 / d1) { - return n1 * t * t; - } else if (t < 2.0 / d1) { - return n1 * (t -= 1.5 / d1) * t + 0.75; - } else if (t < 2.5 / d1) { - return n1 * (t -= 2.25 / d1) * t + 0.9375; - } else { - return n1 * (t -= 2.625 / d1) * t + 0.984375; - } -} -float easeOutBack(float t) { - const float c1 = 1.70158; - const float c3 = c1 + 1.0; - return 1.0 + c3 * pow(t - 1.0, 3.0) + c1 * pow(t - 1.0, 2.0); -} - -// Pulse fade functions -float smoothstepPulse(float t) { - return 4.0 * t * (1.0 - t); -} -float easeOutPulse(float t) { - return t * (2.0 - t); -} -float powerCurvePulse(float t) { - float x = t * 2.0 - 1.0; - return 1.0 - x * x; -} -float doubleSmoothstepPulse(float t) { - return smoothstep(0.0, 0.5, t) * (1.0 - smoothstep(0.5, 1.0, t)); -} -float exponentialDecayPulse(float t) { - return exp(-3.0 * t) * sin(t * 3.1415916); -} -float sinPulse(float t) { - return sin(t * 3.1415916); -} - -vec2 normalize(vec2 value, float isPosition) { - return (value * 2.0 - (iResolution.xy * isPosition)) / iResolution.y; -} - -void mainImage(out vec4 fragColor, in vec2 fragCoord){ - #if !defined(WEB) - fragColor = texture(iChannel0, fragCoord.xy / iResolution.xy); - #endif - - // Normalization & setup (-1 to 1 coords) - vec2 vu = normalize(fragCoord, 1.); - vec2 offsetFactor = vec2(-.5, 0.5); - - vec4 currentCursor = vec4(normalize(iCurrentCursor.xy, 1.), normalize(iCurrentCursor.zw, 0.)); - vec4 previousCursor = vec4(normalize(iPreviousCursor.xy, 1.), normalize(iPreviousCursor.zw, 0.)); - - vec2 centerCC = currentCursor.xy - (currentCursor.zw * offsetFactor); - - float cellWidth = max(currentCursor.z, previousCursor.z); // width of the 'block' cursor - - // check for significant width change - float widthChange = abs(currentCursor.z - previousCursor.z); - float widthThresholdNorm = cellWidth * CURSOR_WIDTH_CHANGE_THRESHOLD; - float isModeChange = step(widthThresholdNorm, widthChange); - - - // ANIMATION - float rippleProgress = (iTime - iTimeCursorChange) / DURATION + ANIMATION_START_OFFSET; - // don't clamp yet; we need to know if it's > 1.0 (finished) - float isAnimating = 1.0 - step(1.0, rippleProgress); // progress < 1.0 ? 1.0: 0.0 - - if (isModeChange > 0.0 && isAnimating > 0.0) { - // float easedProgress = rippleProgress; - // float easedProgress = easeOutQuad(rippleProgress); - // float easedProgress = easeInOutQuad(rippleProgress); - // float easedProgress = easeOutCubic(rippleProgress); - // float easedProgress = easeOutQuart(rippleProgress); - // float easedProgress = easeOutQuint(rippleProgress); - // float easedProgress = easeOutExpo(rippleProgress); - float easedProgress = easeOutCirc(rippleProgress); - // float easedProgress = easeOutSine(rippleProgress); - // float easedProgress = easeOutBack(rippleProgress); - - // easedProgress = clamp(easedProgress, 0.0, 1.0); - - // RIPPLE CALCULATION - float rippleRadius = easedProgress * MAX_RADIUS; - - // float fade = 1.0; // no fade - // float fade = 1.0 - easedProgress; // linear fade - // float fade = 1.0 - smoothstepPulse(rippleProgress); - float fade = 1.0 - easeOutPulse(rippleProgress); - // float fade = 1.0 - powerCurvePulse(rippleProgress); - // float fade = doubleSmoothstepPulse(rippleProgress); - // float fade = exponentialDecayPulse(rippleProgress); - // float fade = sinPulse(rippleProgress); - - // Calculate distance from frag to cursor center - float dist = distance(vu, centerCC); - - float sdfCircle = dist - rippleRadius; - - // Antialias (1-pixel width in normalized coords) - float antiAliasSize = normalize(vec2(BLUR, BLUR), 0.0).x; - float ripple = (1.0 - smoothstep(-antiAliasSize, antiAliasSize, sdfCircle)) * fade; - - // Apply ripple effect - fragColor = mix(fragColor, COLOR, ripple * COLOR.a); - } -} |
