cool-retro-term/app/qml/ShaderLibrary.qml

92 lines
3.6 KiB
QML

import QtQuick 2.0
QtObject {
property string rasterizationShader:
(appSettings.rasterization === appSettings.no_rasterization ? "
lowp vec3 applyRasterization(vec2 screenCoords, lowp vec3 texel, vec2 virtualResolution, float intensity) {
return texel;
}" : "") +
(appSettings.rasterization === appSettings.scanline_rasterization ? "
#define INTENSITY 0.30
#define BRIGHTBOOST 0.30
lowp vec3 applyRasterization(vec2 screenCoords, lowp vec3 texel, vec2 virtualResolution, float intensity) {
lowp vec3 pixelHigh = ((1.0 + BRIGHTBOOST) - (0.2 * texel)) * texel;
lowp vec3 pixelLow = ((1.0 - INTENSITY) + (0.1 * texel)) * texel;
vec2 coords = fract(screenCoords * virtualResolution) * 2.0 - vec2(1.0);
lowp float mask = 1.0 - abs(coords.y);
lowp vec3 rasterizationColor = mix(pixelLow, pixelHigh, mask);
return mix(texel, rasterizationColor, intensity);
}" : "") +
(appSettings.rasterization === appSettings.pixel_rasterization ? "
#define INTENSITY 0.30
#define BRIGHTBOOST 0.30
lowp vec3 applyRasterization(vec2 screenCoords, lowp vec3 texel, vec2 virtualResolution, float intensity) {
lowp vec3 result = texel;
lowp vec3 pixelHigh = ((1.0 + BRIGHTBOOST) - (0.2 * texel)) * texel;
lowp vec3 pixelLow = ((1.0 - INTENSITY) + (0.1 * texel)) * texel;
vec2 coords = fract(screenCoords * virtualResolution) * 2.0 - vec2(1.0);
coords = coords * coords;
lowp float mask = 1.0 - coords.x - coords.y;
lowp vec3 rasterizationColor = mix(pixelLow, pixelHigh, mask);
return mix(texel, rasterizationColor, intensity);
}" : "") +
(appSettings.rasterization === appSettings.subpixel_rasterization ? "
#define INTENSITY 0.30
#define BRIGHTBOOST 0.30
#define SUBPIXELS 3.0
const vec3 offsets = vec3(3.141592654) * vec3(1.0/2.0,1.0/2.0 - 2.0/3.0,1.0/2.0-4.0/3.0);
lowp vec3 applyRasterization(vec2 screenCoords, lowp vec3 texel, vec2 virtualResolution, float intensity) {
vec2 omega = vec2(3.141592654) * vec2(2.0) * virtualResolution;
vec2 angle = screenCoords * omega;
vec3 xfactors = (SUBPIXELS + sin(angle.x + offsets)) / (SUBPIXELS + 1.0);
lowp vec3 result = texel * xfactors;
lowp vec3 pixelHigh = ((1.0 + BRIGHTBOOST) - (0.2 * result)) * result;
lowp vec3 pixelLow = ((1.0 - INTENSITY) + (0.1 * result)) * result;
vec2 coords = fract(screenCoords * virtualResolution) * 2.0 - vec2(1.0);
lowp float mask = 1.0 - abs(coords.y);
lowp vec3 rasterizationColor = mix(pixelLow, pixelHigh, mask);
return mix(texel, rasterizationColor, intensity);
}" : "") +
"\n\n"
property string min2: "
float min2(vec2 v) {
return min(v.x, v.y);
}\n\n"
property string rgb2grey: "
float rgb2grey(vec3 v) {
return dot(v, vec3(0.21, 0.72, 0.04));
}\n\n"
property string max2: "
float max2(vec2 v) {
return max(v.x, v.y);
}\n\n"
property string prod2: "
float prod2(vec2 v) {
return v.x * v.y;
}\n\n"
property string sum2: "
float sum2(vec2 v) {
return v.x + v.y;
}\n\n"
}