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Volumetrics: Blend from last frame to avoid ugly banding in viewport #9

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Volumetrics: Blend from last frame to avoid ugly banding in viewport #9

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12 changes: 12 additions & 0 deletions release/scripts/startup/bl_ui/properties_render.py
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Original file line number Diff line number Diff line change
Expand Up @@ -300,6 +300,17 @@ def draw(self, context):
layout.active = props.use_volumetric_shadows
layout.prop(props, "volumetric_shadow_samples", text="Samples")

class RENDER_PT_eevee_volumetric_blending(RenderButtonsPanel, Panel):
bl_label = "Volumetric Blending"
bl_parent_id = "RENDER_PT_eevee_volumetric"
COMPAT_ENGINES = {'BLENDER_EEVEE'}

def draw_header(self, context):
scene = context.scene
props = scene.eevee
self.layout.prop(props, "use_volumetric_blending", text="")
def draw(self, context):
pass

class RENDER_PT_eevee_subsurface_scattering(RenderButtonsPanel, Panel):
bl_label = "Subsurface Scattering"
Expand Down Expand Up @@ -703,6 +714,7 @@ class RENDER_PT_simplify_greasepencil(RenderButtonsPanel, Panel, GreasePencilSim
RENDER_PT_eevee_volumetric,
RENDER_PT_eevee_volumetric_lighting,
RENDER_PT_eevee_volumetric_shadows,
RENDER_PT_eevee_volumetric_blending,
RENDER_PT_eevee_performance,
RENDER_PT_eevee_hair,
RENDER_PT_eevee_shadows,
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4 changes: 3 additions & 1 deletion source/blender/draw/engines/eevee/eevee_volumes.c
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Expand Up @@ -167,7 +167,9 @@ void EEVEE_volumes_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata)
}

if (do_taa) {
common_data->vol_history_alpha = 0.0f;
if (!(scene_eval->eevee.flag & SCE_EEVEE_VOLUMETRIC_BLENDING)) { /* BoneMaster, Force to use frostbite's paper solution (blend from last frame) to avoid ugly banding */
common_data->vol_history_alpha = 0.0f;
}
current_sample = effects->taa_current_sample - 1;
effects->volume_current_sample = -1;
}
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1 change: 1 addition & 0 deletions source/blender/makesdna/DNA_scene_types.h
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Original file line number Diff line number Diff line change
Expand Up @@ -2413,6 +2413,7 @@ enum {
SCE_EEVEE_GI_AUTOBAKE = (1 << 19),
SCE_EEVEE_SHADOW_SOFT = (1 << 20),
SCE_EEVEE_OVERSCAN = (1 << 21),
SCE_EEVEE_VOLUMETRIC_BLENDING = (1 << 22),
};

/* SceneEEVEE->shadow_method */
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7 changes: 7 additions & 0 deletions source/blender/makesrna/intern/rna_scene.c
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Expand Up @@ -7261,6 +7261,13 @@ static void rna_def_scene_eevee(BlenderRNA *brna)
RNA_def_property_override_flag(prop, PROPOVERRIDE_OVERRIDABLE_LIBRARY);
RNA_def_property_update(prop, NC_SCENE | ND_RENDER_OPTIONS, NULL);

prop = RNA_def_property(srna, "use_volumetric_blending", PROP_BOOLEAN, PROP_NONE);
RNA_def_property_boolean_sdna(prop, NULL, "flag", SCE_EEVEE_VOLUMETRIC_BLENDING);
RNA_def_property_ui_text(
prop, "Volumetric Blending", "Enable volumes blending with previous frame");
RNA_def_property_override_flag(prop, PROPOVERRIDE_OVERRIDABLE_LIBRARY);
RNA_def_property_update(prop, NC_SCENE | ND_RENDER_OPTIONS, NULL);

prop = RNA_def_property(srna, "volumetric_light_clamp", PROP_FLOAT, PROP_NONE);
RNA_def_property_range(prop, 0.0f, FLT_MAX);
RNA_def_property_ui_text(prop, "Clamp", "Maximum light contribution, reducing noise");
Expand Down