diff options
author | Qt by Nokia <qt-info@nokia.com> | 2011-04-27 14:13:26 +0200 |
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committer | axis <qt-info@nokia.com> | 2011-04-27 14:40:44 +0200 |
commit | a129444bb0156c936900dbd2f12bd9f427ff366c (patch) | |
tree | e2e8e77f185d5a5ac32ea0a96cd9945c742e8663 /src/imports/particles/resources/ctvertex.shader | |
parent | 885735d011472bcfbb96e688d9e64553d7fe9d4b (diff) |
Initial import from qtquick2.
Branched from the monolithic repo, Qt qtquick2 branch, at commit
a4a585d2ee907746682846ae6e8a48e19deef469
Diffstat (limited to 'src/imports/particles/resources/ctvertex.shader')
-rw-r--r-- | src/imports/particles/resources/ctvertex.shader | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/src/imports/particles/resources/ctvertex.shader b/src/imports/particles/resources/ctvertex.shader new file mode 100644 index 0000000000..b20676cc49 --- /dev/null +++ b/src/imports/particles/resources/ctvertex.shader @@ -0,0 +1,38 @@ +attribute highp vec2 vPos; +attribute highp vec2 vTex; +attribute highp vec4 vData; // x = time, y = lifeSpan, z = size, w = endSize +attribute highp vec4 vVec; // x,y = constant speed, z,w = acceleration +attribute lowp vec4 vColor; + +uniform highp mat4 matrix; +uniform highp float timestamp; +uniform sampler2D sizetable; +uniform sampler2D opacitytable; + +varying highp vec2 fTex; +varying lowp vec4 fColor; +varying lowp float tt; + +void main() { + fTex = vTex; + highp float size = vData.z; + highp float endSize = vData.w; + + highp float t = (timestamp - vData.x) / vData.y; + + highp float currentSize = mix(size, endSize, t * t) * texture2D(sizetable, vec2(t,0.5)).w; + + if (t < 0. || t > 1.) + currentSize = 0.; + + highp vec2 pos = vPos + - currentSize / 2. + currentSize * vTex // adjust size + + vVec.xy * t * vData.y // apply speed vector.. + + 0.5 * vVec.zw * pow(t * vData.y, 2.); + + gl_Position = matrix * vec4(pos.x, pos.y, 0, 1); + + fColor = vColor; + tt = t; + +} |