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Improve Magnify and Ripple effects on video shader example

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Re-enable Magnify shader.
Use correct coordinates for Magnify and Ripple shader.

Task-number: QTBUG-38121
Change-Id: Ie8d962ba841d074c9ebcf3b86f948848ad6a1812
Reviewed-by: Topi Reiniö <topi.reinio@digia.com>
This commit is contained in:
Niels Weber
2014-05-05 16:16:05 +02:00
parent f31e186354
commit da77331952
5 changed files with 12 additions and 4 deletions
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3
examples/multimedia/video/qmlvideofx/shaders/magnify.fsh
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@@ -50,12 +50,15 @@ uniform float targetWidth;
uniform float targetHeight;
uniform float posX;
uniform float posY;
uniform float pixDens;
void main()
{
vec2 tc = qt_TexCoord0;
vec2 center = vec2(posX, posY);
vec2 xy = gl_FragCoord.xy - center.xy;
xy.x -= (pixDens * 14.0);
xy.y -= (pixDens * 29.0);
float r = sqrt(xy.x * xy.x + xy.y * xy.y);
if (r < radius) {
float h = diffractionIndex * 0.5 * radius;

3
examples/multimedia/video/qmlvideofx/shaders/ripple.fsh
View File

@@ -55,12 +55,13 @@ const int ITER = 7;
const float RATE = 0.1;
uniform float amplitude;
uniform float n;
uniform float pixDens;
void main()
{
vec2 uv = qt_TexCoord0.xy;
vec2 tc = uv;
vec2 p = vec2(-1.0 + 2.0 * gl_FragCoord.x / targetWidth, -(-1.0 + 2.0 * gl_FragCoord.y / targetHeight));
vec2 p = vec2(-1.0 + 2.0 * (gl_FragCoord.x - (pixDens * 14.0)) / targetWidth, -(-1.0 + 2.0 * (gl_FragCoord.y - (pixDens * 29.0)) / targetHeight));
float diffx = 0.0;
float diffy = 0.0;
vec4 col;