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unsuccessful experimentation

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Asuro
2025-02-18 00:03:09 +01:00
parent fb5851020f
commit 2c32a261c1
12 changed files with 111 additions and 34 deletions
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27
src/game/shaders/frag.sc
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@@ -12,9 +12,11 @@ uniform vec4 u_testColor;
float circle(vec2 uv, float radius)
{
float distSq = uv.x * uv.x + uv.y * uv.y;
// float result = sqrt(distSq) / radius * 0.8;
float result = sqrt(distSq) / radius;
// return result < 0.5;
return clamp(1.0 - result, 0.0, 1.0);
// float clamped = clamp(1.0 - result, 0.0, 1.0);
float clamped = clamp(1.5 - result, 0.0, 1.0);
return clamped;
}
float calcBrightness(vec3 lightPos, vec3 vertPos, vec3 normal)
@@ -65,8 +67,9 @@ void main()
// float brightness = calcBrightness(lightPos, v_wpos, v_normal);
float brightness = calcBrightnessDirectional(vec3(0.5, 0.3, 1.0), v_normal);
// brightness = 1.0;
// brightness = 0.1 + brightness * 0.9;
// brightness = sin(u_time.x) * 0.5 + 0.5;
// Magic dot frequency calculation
float baseScale = 2.0;
float2 dx = ddx(v_uv0 * baseScale);
float2 dy = ddy(v_uv0 * baseScale);
@@ -78,24 +81,28 @@ void main()
float discriminant = sqrt(discriminantSqr);
float2 freq = sqrt(float2(qq + discriminant, qq - discriminant) / 2.0);
// Figuring out how many dots we want
float spacing = freq.y * exp2(2.0);
spacing = 1.0 / spacing;
spacing *= brightness; // TODO: check reference to see how to calculate this!
float spacingLog = max(log2(spacing), 0.0);
int patternScaleLevel = floor(spacingLog);
float patternFractional = spacingLog - patternScaleLevel;
vec2 uv = v_uv0 * exp2(patternScaleLevel);
float dither = circles(uv, patternScaleLevel, patternFractional, brightness);
// Coloring
vec3 texColor = u_testColor.x > 0.1 ? u_testColor.xyz : texture2D(s_texColor, v_uv0).xyz;
vec3 color = desaturate(texColor) * 0.01 + dither * texColor * 0.95;
vec3 smoothColor = brightness * u_testColor.xyz;
vec3 mixedColor = 0.1 * smoothColor + 0.9 * color;
// gl_FragColor = vec4(mixedColor, 1.0);
vec3 color;
color.r = circles(uv, patternScaleLevel, patternFractional, brightness * texColor.r);
color.g = circles(uv, patternScaleLevel, patternFractional, brightness * texColor.g);
color.b = circles(uv, patternScaleLevel, patternFractional, brightness * texColor.b);
// color = circles(uv, patternScaleLevel, patternFractional, brightness) * texColor;
gl_FragColor = vec4(color, 1.0);
// vec3 smoothColor = brightness * u_testColor.xyz;
// gl_FragColor = brightness;
// gl_FragColor = dither;
// gl_FragColor = u_testColor;
// gl_FragColor = texture2D(s_texColor, v_uv0);
// gl_FragColor = vec4(texColor, 1.0);
// gl_FragColor = vec4(v_normal, 1.0);
// gl_FragColor = vec4(uv, 0.0, 1.0);
}