Fix T47214: Keyed Particles don't render correctly when used for point density input

The issue was caused by different AABB used by Cycles and texture sampler.

Instead of trying to keep this two functions in sync we now do have an
utility call in the point density node to query the AABB.

1 files changed, 29 insertions, 0 deletions

diff --git a/source/blender/makesrna/intern/rna_nodetree.c b/source/blender/makesrna/intern/rna_nodetree.c
index 798f3cb9af3..14014186e0f 100644
--- a/source/blender/makesrna/intern/rna_nodetree.c
+++ b/source/blender/makesrna/intern/rna_nodetree.c
@@ -3100,6 +3100,22 @@ void rna_ShaderNodePointDensity_density_calc(bNode *self,
 	BKE_texture_pointdensity_free_data(pd);
 }
 
+void rna_ShaderNodePointDensity_density_minmax(bNode *self,
+                                               Scene *scene,
+                                               int settings,
+                                               float r_min[3],
+                                               float r_max[3])
+{
+	NodeShaderTexPointDensity *shader_point_density = self->storage;
+	PointDensity *pd = &shader_point_density->pd;
+	if (scene == NULL) {
+		zero_v3(r_min);
+		zero_v3(r_max);
+		return;
+	}
+	RE_minmac_point_density(scene, pd, settings == 1, r_min, r_max);
+}
+
 #else
 
 static EnumPropertyItem prop_image_layer_items[] = {
@@ -4054,6 +4070,19 @@ static void def_sh_tex_pointdensity(StructRNA *srna)
 	prop = RNA_def_float_array(func, "rgba_values", 1, NULL, 0, 0, "", "RGBA Values", 0, 0);
 	RNA_def_property_flag(prop, PROP_DYNAMIC);
 	RNA_def_function_output(func, prop);
+
+	func = RNA_def_function(srna, "calc_point_density_minmax", "rna_ShaderNodePointDensity_density_minmax");
+	RNA_def_function_ui_description(func, "Calculate point density");
+	RNA_def_pointer(func, "scene", "Scene", "", "");
+	RNA_def_enum(func, "settings", calc_mode_items, 1, "", "Calculate density for rendering");
+	prop = RNA_def_property(func, "min", PROP_FLOAT, PROP_COORDS);
+	RNA_def_property_array(prop, 3);
+	RNA_def_property_flag(prop, PROP_THICK_WRAP);
+	RNA_def_function_output(func, prop);
+	prop = RNA_def_property(func, "max", PROP_FLOAT, PROP_COORDS);
+	RNA_def_property_array(prop, 3);
+	RNA_def_property_flag(prop, PROP_THICK_WRAP);
+	RNA_def_function_output(func, prop);
 }
 
 static void def_glossy(StructRNA *srna)