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ScreenShield: unbreak blurring the background

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It was missing a uniform, so it had no effect besides desaturation.

https://bugzilla.gnome.org/show_bug.cgi?id=682536
This commit is contained in:
Giovanni Campagna 2012-11-07 19:04:12 +01:00
parent 989d0a5682
commit 7bed964ab2
1 changed files with 10 additions and 4 deletions
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14
js/ui/screenShield.js
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@ -51,10 +51,11 @@ const SHORT_FADE_TIME = 0.3;
function sample(offx, offy) {
return 'texel += texture2D (sampler, tex_coord.st + pixel_step * ' +
'vec2 (' + offx + ',' + offy + ') * 2.0);\n'
'vec2 (' + offx + ',' + offy + '));\n'
}
const GLSL_BLUR_EFFECT_DECLARATIONS = ' \
uniform vec2 pixel_step;\n \
uniform float desaturation;\n \
vec4 apply_blur(in sampler2D sampler, in vec2 tex_coord) {\n \
vec4 texel;\n \
texel = texture2D (sampler, tex_coord.st);\n'
@ -62,7 +63,6 @@ vec4 apply_blur(in sampler2D sampler, in vec2 tex_coord) {\n \
+ sample( 0.0, -1.0)
+ sample(+1.0, -1.0)
+ sample(-1.0, 0.0)
+ sample( 0.0, 0.0)
+ sample(+1.0, 0.0)
+ sample(-1.0, +1.0)
+ sample( 0.0, +1.0)
@ -70,7 +70,7 @@ vec4 apply_blur(in sampler2D sampler, in vec2 tex_coord) {\n \
texel /= 9.0;\n \
return texel;\n \
}\n \
vec3 desaturate (const vec3 color, const float desaturation)\n \
vec3 desaturate (const vec3 color)\n \
{\n \
const vec3 gray_conv = vec3 (0.299, 0.587, 0.114);\n \
vec3 gray = vec3 (dot (gray_conv, color));\n \
@ -78,7 +78,7 @@ vec3 desaturate (const vec3 color, const float desaturation)\n \
}';
const GLSL_BLUR_EFFECT_CODE = ' \
cogl_texel = apply_blur(cogl_sampler, cogl_tex_coord.st);\n \
cogl_texel.rgb = desaturate(cogl_texel.rgb, 0.6);\n';
cogl_texel.rgb = desaturate(cogl_texel.rgb);\n';
const Clock = new Lang.Class({
@ -409,6 +409,12 @@ const ScreenShield = new Lang.Class({
GLSL_BLUR_EFFECT_DECLARATIONS,
GLSL_BLUR_EFFECT_CODE,
true);
backgroundActor.set_uniform_float('desaturation',
1, 1, [0.6]);
backgroundActor.connect('notify::size', function(actor) {
actor.set_uniform_float('pixel_step', 2, 1, [1/actor.width, 1/actor.height]);
});
this._background = new St.Bin({ style_class: 'screen-shield-background',
child: backgroundActor });
this._lockScreenGroup.add_actor(this._background);