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🚚 Move shader code to GLSL files

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This commit is contained in:
Simon Schneegans
2022-05-13 08:27:09 +02:00
parent 77d5de7b8e
commit 46cc997e2a
43 changed files with 1303 additions and 1334 deletions
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src/Apparition.js
+5 -50
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@@ -137,8 +137,7 @@ var Apparition = class Apparition {
if (utils.isInShellProcess()) {
const Shell = imports.gi.Shell;
const shaderSnippets = Me.imports.src.shaderSnippets;
const Shell = imports.gi.Shell;
ShaderClass = GObject.registerClass({}, class ShaderClass extends Shell.GLSLEffect {
// This is called when the effect is used for the first time. This can be used to
@@ -177,55 +176,11 @@ if (utils.isInShellProcess()) {
// This is called by the constructor. This means, it's only called when the effect
// is used for the first time.
vfunc_build_pipeline() {
const declarations = `
// Inject some common shader snippets.
${shaderSnippets.standardUniforms()}
const decl =
utils.loadGLSLResource(`/shaders/${Apparition.getNick()}-declarations.glsl`);
const code = utils.loadGLSLResource(`/shaders/${Apparition.getNick()}.glsl`);
uniform vec2 uSeed;
uniform float uShake;
uniform float uTwirl;
uniform float uSuction;
uniform float uRandomness;
const float ACTOR_SCALE = 2.0;
const float PADDING = ACTOR_SCALE / 2.0 - 0.5;
`;
// The math for the whirling is inspired by this post:
// http://www.geeks3d.com/20110428/shader-library-swirl-post-processing-filter-in-glsl
const code = `
// We simply inverse the progress for opening windows.
float progress = uForOpening ? 1.0-uProgress : uProgress;
// Choose a random suction center.
vec2 center = uSeed * uRandomness + 0.5 * (1.0 - uRandomness);
vec2 coords = cogl_tex_coord_in[0].st * ACTOR_SCALE - PADDING - center;
// Add some shaking.
coords.x += progress * 0.05 * uShake * sin((progress + uSeed.x) * (1.0 + uSeed.x) * uShake);
coords.y += progress * 0.05 * uShake * cos((progress + uSeed.y) * (1.0 + uSeed.y) * uShake);
// "Suck" the texture into the center.
float dist = length(coords) / sqrt(2);
coords += progress * coords / dist * 0.5 * uSuction;
// Apply some whirling.
float angle = pow(1.0 - dist, 2.0) * uTwirl * progress;
float s = sin(angle);
float c = cos(angle);
coords = vec2(dot(coords, vec2(c, -s)), dot(coords, vec2(s, c)));
// Shell.GLSLEffect uses straight alpha. So we have to convert from premultiplied.
cogl_color_out = texture2D(uTexture, coords + center);
if (cogl_color_out.a > 0) {
cogl_color_out.rgb /= cogl_color_out.a;
}
// Fade out the window texture.
cogl_color_out.a *= 1.0 - progress;
`;
this.add_glsl_snippet(Shell.SnippetHook.FRAGMENT, declarations, code, true);
this.add_glsl_snippet(Shell.SnippetHook.FRAGMENT, decl, code, true);
}
});
}