78 lines
2.5 KiB
GLSL
78 lines
2.5 KiB
GLSL
#version 330
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// Input vertex attributes (from vertex shader)
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in vec2 fragTexCoord;
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in vec4 fragColor;
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// Input uniform values
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uniform sampler2D texture0;
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uniform vec4 colDiffuse;
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uniform float u_time;
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uniform float u_glitchIntensity;
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uniform vec2 u_resolution;
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uniform int u_preset;
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// Output fragment color
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out vec4 finalColor;
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void main()
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{
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vec2 uv = fragTexCoord;
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// 1. Digital Glitch / Tactical Chromatic Aberration
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float glitch = (u_preset >= 2) ? clamp(u_glitchIntensity, 0.0, 1.0) : 0.0;
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if (glitch > 0.001)
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{
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// Horizontal line slice displacement
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float slice = step(0.68, sin(uv.y * 42.0 + u_time * 30.0));
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float sliceOffset = (slice * 2.0 - 1.0) * 0.015 * glitch;
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uv.x += sliceOffset;
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// Chromatic RGB separation
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float split = 0.010 * glitch;
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float r = texture(texture0, vec2(uv.x + split, uv.y)).r;
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float g = texture(texture0, uv).g;
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float b = texture(texture0, vec2(uv.x - split, uv.y)).b;
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finalColor = vec4(r, g, b, 1.0);
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}
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else
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{
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finalColor = texture(texture0, uv);
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}
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// 2. Tactical Color Grading (High Contrast Monochrome + Vivid Crimson Accent)
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// Desaturate non-red tones toward tactical gunmetal/monochrome
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float luma = dot(finalColor.rgb, vec3(0.299, 0.587, 0.114));
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// Check if the color is an intentional tactical accent (Crimson, Cobalt EMP, Amber, Acid, Violet)
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float maxC = max(finalColor.r, max(finalColor.g, finalColor.b));
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float minC = min(finalColor.r, min(finalColor.g, finalColor.b));
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float sat = (maxC > 0.05) ? ((maxC - minC) / maxC) : 0.0;
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bool isTacticalAccent = (sat > 0.36) || (finalColor.r > 0.35 && finalColor.r > finalColor.g * 1.3);
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if (!isTacticalAccent)
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{
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// Pull low-saturation environmental surfaces toward high-contrast monochrome steel
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vec3 mono = vec3(luma);
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finalColor.rgb = mix(finalColor.rgb, mono, 0.80);
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}
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// Enhance contrast (crush deep blacks, crispen bright highlights)
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finalColor.rgb = (finalColor.rgb - 0.5) * 1.18 + 0.5;
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finalColor.rgb = clamp(finalColor.rgb, 0.0, 1.0);
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// 3. Cinematic Corner Vignette (Tactical Helmet Visor Shadow)
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float d = distance(uv, vec2(0.5, 0.5));
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float vignette = smoothstep(0.78, 0.32, d);
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finalColor.rgb *= mix(0.40, 1.0, vignette);
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// 4. Subtle Tactical CRT Scanlines (Ultra mode only)
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if (u_preset >= 2)
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{
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float scanline = sin(uv.y * u_resolution.y * 1.5) * 0.025;
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finalColor.rgb -= scanline;
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}
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finalColor.a = 1.0;
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}
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