diff options
Diffstat (limited to 'source')
4 files changed, 12 insertions, 10 deletions
diff --git a/source/blender/blenkernel/intern/seqmodifier.c b/source/blender/blenkernel/intern/seqmodifier.c index cc44cd66f23..aceb8b7e4ad 100644 --- a/source/blender/blenkernel/intern/seqmodifier.c +++ b/source/blender/blenkernel/intern/seqmodifier.c @@ -545,20 +545,20 @@ static void brightcontrast_apply_threaded(int width, float brightness = data->bright / 100.0f; float contrast = data->contrast; float delta = contrast / 200.0f; - - a = 1.0f - delta * 2.0f; /* * The algorithm is by Werner D. Streidt * (http://visca.com/ffactory/archives/5-99/msg00021.html) * Extracted of OpenCV demhist.c */ if (contrast > 0) { - a = 1.0f / a; + a = 1.0f - delta * 2.0f; + a = 1.0f / max_ff(a, FLT_EPSILON); b = a * (brightness - delta); } else { delta *= -1; - b = a * (brightness + delta); + a = max_ff(1.0f - delta * 2.0f, 0.0f); + b = a * brightness + delta; } for (y = 0; y < height; y++) { diff --git a/source/blender/compositor/operations/COM_BrightnessOperation.cpp b/source/blender/compositor/operations/COM_BrightnessOperation.cpp index d0bab5aa4d9..b6c22029899 100644 --- a/source/blender/compositor/operations/COM_BrightnessOperation.cpp +++ b/source/blender/compositor/operations/COM_BrightnessOperation.cpp @@ -62,12 +62,13 @@ void BrightnessOperation::executePixelSampled(float output[4], * Extracted of OpenCV demhist.c */ if (contrast > 0) { - a = 1.0f / (1.0f - delta * 2.0f); + a = 1.0f - delta * 2.0f; + a = 1.0f / max_ff(a, FLT_EPSILON); b = a * (brightness - delta); } else { delta *= -1; - a = 1.0f - delta * 2.0f; + a = max_ff(1.0f - delta * 2.0f, 0.0f); b = a * brightness + delta; } if (this->m_use_premultiply) { diff --git a/source/blender/editors/sculpt_paint/paint_vertex_color_ops.c b/source/blender/editors/sculpt_paint/paint_vertex_color_ops.c index fed477ace14..9a6251e2f98 100644 --- a/source/blender/editors/sculpt_paint/paint_vertex_color_ops.c +++ b/source/blender/editors/sculpt_paint/paint_vertex_color_ops.c @@ -372,19 +372,20 @@ static int vertex_color_brightness_contrast_exec(bContext *C, wmOperator *op) float contrast = RNA_float_get(op->ptr, "contrast"); brightness /= 100.0f; float delta = contrast / 200.0f; - gain = 1.0f - delta * 2.0f; /* * The algorithm is by Werner D. Streidt * (http://visca.com/ffactory/archives/5-99/msg00021.html) * Extracted of OpenCV demhist.c */ if (contrast > 0) { - gain = 1.0f / ((gain != 0.0f) ? gain : FLT_EPSILON); + gain = 1.0f - delta * 2.0f; + gain = 1.0f / max_ff(gain, FLT_EPSILON); offset = gain * (brightness - delta); } else { delta *= -1; - offset = gain * (brightness + delta); + gain = max_ff(1.0f - delta * 2.0f, 0.0f); + offset = gain * brightness + delta; } } diff --git a/source/blender/makesrna/intern/rna_sequencer.c b/source/blender/makesrna/intern/rna_sequencer.c index b54fdf5aadb..c1ef31a80cd 100644 --- a/source/blender/makesrna/intern/rna_sequencer.c +++ b/source/blender/makesrna/intern/rna_sequencer.c @@ -3066,7 +3066,7 @@ static void rna_def_brightcontrast_modifier(BlenderRNA *brna) prop = RNA_def_property(srna, "contrast", PROP_FLOAT, PROP_UNSIGNED); RNA_def_property_float_sdna(prop, NULL, "contrast"); - RNA_def_property_range(prop, -FLT_MAX, FLT_MAX); + RNA_def_property_range(prop, -100.0f, 100.0f); RNA_def_property_ui_text(prop, "Contrast", "Adjust the difference in luminosity between pixels"); RNA_def_property_update(prop, NC_SCENE | ND_SEQUENCER, "rna_SequenceModifier_update"); } |