mirror of https://git.ffmpeg.org/ffmpeg.git
vsrc_mandelbrot: check bailout only once every 8 iterations, this is around 10% faster.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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@ -247,7 +247,30 @@ static void draw_mandelbrot(AVFilterContext *ctx, uint32_t *color, int linesize,
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}
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}
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for(i=0; i<mb->maxiter; i++){
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for(i=0; i<mb->maxiter-8; i++){
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double t;
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Z_Z2_C_ZYKLUS(t, zi, zr, zi, 0)
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i++;
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Z_Z2_C_ZYKLUS(zr, zi, t, zi, 1)
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i++;
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Z_Z2_C_ZYKLUS(t, zi, zr, zi, 0)
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i++;
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Z_Z2_C_ZYKLUS(zr, zi, t, zi, 1)
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i++;
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Z_Z2_C_ZYKLUS(t, zi, zr, zi, 0)
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i++;
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Z_Z2_C_ZYKLUS(zr, zi, t, zi, 1)
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i++;
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Z_Z2_C_ZYKLUS(t, zi, zr, zi, 0)
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i++;
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Z_Z2_C_ZYKLUS(zr, zi, t, zi, 1)
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if(zr*zr + zi*zi > mb->bailout)
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break;
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}
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i-= FFMIN(7, i);
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zr= mb->zyklus[i][0];
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zi= mb->zyklus[i][1];
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for(; i<mb->maxiter; i++){
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double t;
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double t;
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if(zr*zr + zi*zi > mb->bailout){
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if(zr*zr + zi*zi > mb->bailout){
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switch(mb->outer){
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switch(mb->outer){
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