fredrik added a comment.
The correct way to fix this is to use a custom shader that does approximately
this:
uniform sampler2D texture1;
uniform sampler2D texture2;
uniform float fadeProgress;
varying vec2 texcoord1;
varying vec2 texcoord2;
void main(void) {
vec4 texel1 = texture2D(texture1, texcoord1);
vec4 texel2 = texture2D(texture2, texcoord2);
gl_FragColor = mix(texel1, texel2, fadeProgress);
}
As an added bonus you only render each pixel once, and you don't need
blending to be enabled, so it's much faster. Especially on tiled renderers.
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REVISION DETAIL
https://phabricator.kde.org/D2484
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To: broulik, #plasma, mart
Cc: fredrik, mart, plasma-devel, lesliezhai, ali-mohamed, jensreuterberg,
abetts, sebas
