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Diffstat (limited to 'video/out/gpu/utils.c')
| -rw-r--r-- | video/out/gpu/utils.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/video/out/gpu/utils.c b/video/out/gpu/utils.c index 2c625dc26a..d18cf6e8e0 100644 --- a/video/out/gpu/utils.c +++ b/video/out/gpu/utils.c @@ -33,10 +33,25 @@ void gl_transform_trans(struct gl_transform t, struct gl_transform *x) gl_transform_vec(t, &x->t[0], &x->t[1]); } -void gl_transform_ortho_fbo(struct gl_transform *t, struct ra_fbo fbo) +void gl_transform_ortho_fbo(struct gl_transform *t, const struct ra_fbo *fbo) { - int y_dir = fbo.flip ? -1 : 1; - gl_transform_ortho(t, 0, fbo.tex->params.w, 0, fbo.tex->params.h * y_dir); + int y_dir = fbo->flip ? -1 : 1; + gl_transform_ortho(t, 0, fbo->tex->params.w, 0, fbo->tex->params.h * y_dir); +} + +float gl_video_scale_ambient_lux(float lmin, float lmax, + float rmin, float rmax, float lux) +{ + assert(lmax > lmin); + + float num = (rmax - rmin) * (log10(lux) - log10(lmin)); + float den = log10(lmax) - log10(lmin); + float result = num / den + rmin; + + // clamp the result + float max = MPMAX(rmax, rmin); + float min = MPMIN(rmax, rmin); + return MPMAX(MPMIN(result, max), min); } void ra_buf_pool_uninit(struct ra *ra, struct ra_buf_pool *pool) |