/*
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * Contributor(s): Blender Foundation (2008).
 *
 * ***** END GPL LICENSE BLOCK *****
 */

/** \file blender/makesrna/intern/rna_lamp.c
 *  \ingroup RNA
 */

#include <stdlib.h>

#include "BLI_sys_types.h"
#include "BLI_math_base.h"
#include "BLI_math_rotation.h"

#include "BLF_translation.h"

#include "RNA_define.h"
#include "RNA_enum_types.h"
#include "rna_internal.h"

#include "DNA_lamp_types.h"
#include "DNA_material_types.h"
#include "DNA_texture_types.h"

#ifdef RNA_RUNTIME

#include "MEM_guardedalloc.h"

#include "BKE_context.h"
#include "BKE_depsgraph.h"
#include "BKE_main.h"
#include "BKE_texture.h"

#include "ED_node.h"
#include "WM_api.h"
#include "WM_types.h"

static void rna_Lamp_buffer_size_set(PointerRNA *ptr, int value)
{
	Lamp *la = (Lamp *)ptr->data;

	CLAMP(value, 128, 10240);
	la->bufsize = value;
	la->bufsize &= (~15); /* round to multiple of 16 */
}

static PointerRNA rna_Lamp_sky_settings_get(PointerRNA *ptr)
{
	return rna_pointer_inherit_refine(ptr, &RNA_LampSkySettings, ptr->id.data);
}

static void rna_Lamp_mtex_begin(CollectionPropertyIterator *iter, PointerRNA *ptr)
{
	Lamp *la = (Lamp *)ptr->data;
	rna_iterator_array_begin(iter, (void *)la->mtex, sizeof(MTex *), MAX_MTEX, 0, NULL);
}

static PointerRNA rna_Lamp_active_texture_get(PointerRNA *ptr)
{
	Lamp *la = (Lamp *)ptr->data;
	Tex *tex;

	tex = give_current_lamp_texture(la);
	return rna_pointer_inherit_refine(ptr, &RNA_Texture, tex);
}

static void rna_Lamp_active_texture_set(PointerRNA *ptr, PointerRNA value)
{
	Lamp *la = (Lamp *)ptr->data;

	set_current_lamp_texture(la, value.data);
}

static int rna_use_shadow_get(PointerRNA *ptr)
{
	Lamp *la = (Lamp *)ptr->data;

	if (la->type == LA_SPOT) {
		return (la->mode & (LA_SHAD_BUF | LA_SHAD_RAY)) != 0;
	}
	else {
		return (la->mode & LA_SHAD_RAY) != 0;
	}
}

static void rna_use_shadow_set(PointerRNA *ptr, int value)
{
	Lamp *la = (Lamp *)ptr->data;
	la->mode &= ~(LA_SHAD_BUF | LA_SHAD_RAY);
	if (value) {
		la->mode |= LA_SHAD_RAY;
	}
}

static StructRNA *rna_Lamp_refine(struct PointerRNA *ptr)
{
	Lamp *la = (Lamp *)ptr->data;

	switch (la->type) {
		case LA_LOCAL:
			return &RNA_PointLamp;
		case LA_SUN:
			return &RNA_SunLamp;
		case LA_SPOT:
			return &RNA_SpotLamp;
		case LA_HEMI:
			return &RNA_HemiLamp;
		case LA_AREA:
			return &RNA_AreaLamp;
		default:
			return &RNA_Lamp;
	}
}

static void rna_Lamp_update(Main *UNUSED(bmain), Scene *UNUSED(scene), PointerRNA *ptr)
{
	Lamp *la = ptr->id.data;

	DAG_id_tag_update(&la->id, 0);
	WM_main_add_notifier(NC_LAMP | ND_LIGHTING, la);
}

static void rna_Lamp_draw_update(Main *UNUSED(bmain), Scene *UNUSED(scene), PointerRNA *ptr)
{
	Lamp *la = ptr->id.data;

	DAG_id_tag_update(&la->id, 0);
	WM_main_add_notifier(NC_LAMP | ND_LIGHTING_DRAW, la);
}

static void rna_Lamp_sky_update(Main *UNUSED(bmain), Scene *UNUSED(scene), PointerRNA *ptr)
{
	Lamp *la = ptr->id.data;

	DAG_id_tag_update(&la->id, 0);
	WM_main_add_notifier(NC_LAMP | ND_SKY, la);
}

static void rna_Lamp_use_nodes_update(bContext *C, PointerRNA *ptr)
{
	Lamp *la = (Lamp *)ptr->data;

	if (la->use_nodes && la->nodetree == NULL)
		ED_node_shader_default(C, &la->id);
	
	rna_Lamp_update(CTX_data_main(C), CTX_data_scene(C), ptr);
}

#else
/* Don't define icons here, so they don't show up in the Lamp UI (properties Editor) - DingTo */
EnumPropertyItem lamp_type_items[] = {
	{LA_LOCAL, "POINT", 0, "Point", "Omnidirectional point light source"},
	{LA_SUN, "SUN", 0, "Sun", "Constant direction parallel ray light source"},
	{LA_SPOT, "SPOT", 0, "Spot", "Directional cone light source"},
	{LA_HEMI, "HEMI", 0, "Hemi", "180 degree constant light source"},
	{LA_AREA, "AREA", 0, "Area", "Directional area light source"},
	{0, NULL, 0, NULL, NULL}
};

static void rna_def_lamp_mtex(BlenderRNA *brna)
{
	StructRNA *srna;
	PropertyRNA *prop;

	static EnumPropertyItem prop_texture_coordinates_items[] = {
		{TEXCO_GLOB, "GLOBAL", 0, "Global", "Use global coordinates for the texture coordinates"},
		{TEXCO_VIEW, "VIEW", 0, "View", "Use view coordinates for the texture coordinates"},
		{TEXCO_OBJECT, "OBJECT", 0, "Object", "Use linked object's coordinates for texture coordinates"},
		{0, NULL, 0, NULL, NULL}
	};

	srna = RNA_def_struct(brna, "LampTextureSlot", "TextureSlot");
	RNA_def_struct_sdna(srna, "MTex");
	RNA_def_struct_ui_text(srna, "Lamp Texture Slot", "Texture slot for textures in a Lamp datablock");

	prop = RNA_def_property(srna, "texture_coords", PROP_ENUM, PROP_NONE);
	RNA_def_property_enum_sdna(prop, NULL, "texco");
	RNA_def_property_enum_items(prop, prop_texture_coordinates_items);
	RNA_def_property_ui_text(prop, "Texture Coordinates", "");

	prop = RNA_def_property(srna, "object", PROP_POINTER, PROP_NONE);
	RNA_def_property_pointer_sdna(prop, NULL, "object");
	RNA_def_property_struct_type(prop, "Object");
	RNA_def_property_flag(prop, PROP_EDITABLE);
	RNA_def_property_ui_text(prop, "Object", "Object to use for mapping with Object texture coordinates");

	prop = RNA_def_property(srna, "use_map_color", PROP_BOOLEAN, PROP_NONE);
	RNA_def_property_boolean_sdna(prop, NULL, "mapto", LAMAP_COL);
	RNA_def_property_ui_text(prop, "Color", "Let the texture affect the basic color of the lamp");
	RNA_def_property_update(prop, 0, "rna_Lamp_update");

	prop = RNA_def_property(srna, "use_map_shadow", PROP_BOOLEAN, PROP_NONE);
	RNA_def_property_boolean_sdna(prop, NULL, "mapto", LAMAP_SHAD);
	RNA_def_property_ui_text(prop, "Shadow", "Let the texture affect the shadow color of the lamp");
	RNA_def_property_update(prop, 0, "rna_Lamp_update");

	prop = RNA_def_property(srna, "color_factor", PROP_FLOAT, PROP_NONE);
	RNA_def_property_float_sdna(prop, NULL, "colfac");
	RNA_def_property_ui_range(prop, 0, 1, 10, 3);
	RNA_def_property_ui_text(prop, "Color Factor", "Amount texture affects color values");
	RNA_def_property_update(prop, 0, "rna_Lamp_update");

	prop = RNA_def_property(srna, "shadow_factor", PROP_FLOAT, PROP_NONE);
	RNA_def_property_float_sdna(prop, NULL, "shadowfac");
	RNA_def_property_ui_range(prop, 0, 1, 10, 3);
	RNA_def_property_ui_text(prop, "Shadow Factor", "Amount texture affects shadow");
	RNA_def_property_update(prop, 0, "rna_Lamp_update");
}

static void rna_def_lamp_sky_settings(BlenderRNA *brna)
{
	StructRNA *srna;
	PropertyRNA *prop;

	static EnumPropertyItem prop_skycolorspace_items[] = {
		{0, "SMPTE", 0, "SMPTE", ""},
		{1, "REC709", 0, "REC709", ""},
		{2, "CIE", 0, "CIE", ""},
		{0, NULL, 0, NULL, NULL}
	};
		
	srna = RNA_def_struct(brna, "LampSkySettings", NULL);
	RNA_def_struct_sdna(srna, "Lamp");
	RNA_def_struct_nested(brna, srna, "SunLamp");
	RNA_def_struct_ui_text(srna, "Lamp Sky Settings", "Sky related settings for a sun lamp");
		
	prop = RNA_def_property(srna, "sky_color_space", PROP_ENUM, PROP_NONE);
	RNA_def_property_enum_sdna(prop, NULL, "sky_colorspace");
	RNA_def_property_enum_items(prop, prop_skycolorspace_items);
	RNA_def_property_ui_text(prop, "Sky Color Space", "Color space to use for internal XYZ->RGB color conversion");
	RNA_def_property_update(prop, 0, "rna_Lamp_sky_update");

	prop = RNA_def_property(srna, "sky_blend_type", PROP_ENUM, PROP_NONE);
	RNA_def_property_enum_sdna(prop, NULL, "skyblendtype");
	RNA_def_property_enum_items(prop, ramp_blend_items);
	RNA_def_property_ui_text(prop, "Sky Blend Mode", "Blend mode for combining sun sky with world sky");
	RNA_def_property_update(prop, 0, "rna_Lamp_sky_update");
	
	/* Number values */
	
	prop = RNA_def_property(srna, "horizon_brightness", PROP_FLOAT, PROP_NONE);
	RNA_def_property_range(prop, 0.0f, 20.0f);
	RNA_def_property_ui_text(prop, "Horizon Brightness", "Horizon brightness");
	RNA_def_property_update(prop, 0, "rna_Lamp_sky_update");

	prop = RNA_def_property(srna, "spread", PROP_FLOAT, PROP_NONE);
	RNA_def_property_range(prop, 0.0f, 10.0f);
	RNA_def_property_ui_text(prop, "Horizon Spread", "Horizon Spread");
	RNA_def_property_update(prop, 0, "rna_Lamp_sky_update");

	prop = RNA_def_property(srna, "sun_brightness", PROP_FLOAT, PROP_NONE);
	RNA_def_property_range(prop, 0.0f, 10.0f);
	RNA_def_property_ui_text(prop, "Sun Brightness", "Sun brightness");
	RNA_def_property_update(prop, 0, "rna_Lamp_sky_update");

	prop = RNA_def_property(srna, "sun_size", PROP_FLOAT, PROP_NONE);
	RNA_def_property_range(prop, 0.0f, 10.0f);
	RNA_def_property_ui_text(prop, "Sun Size", "Sun size");
	RNA_def_property_update(prop, 0, "rna_Lamp_sky_update");

	prop = RNA_def_property(srna, "backscattered_light", PROP_FLOAT, PROP_NONE);
	RNA_def_property_range(prop, -1.0f, 1.0f);
	RNA_def_property_ui_text(prop, "Backscattered Light", "Backscattered light");
	RNA_def_property_update(prop, 0, "rna_Lamp_sky_update");

	prop = RNA_def_property(srna, "sun_intensity", PROP_FLOAT, PROP_NONE);
	RNA_def_property_range(prop, 0.0f, 10.0f);
	RNA_def_property_ui_text(prop, "Sun Intensity", "Sun intensity");
	RNA_def_property_update(prop, 0, "rna_Lamp_sky_update");

	prop = RNA_def_property(srna, "atmosphere_turbidity", PROP_FLOAT, PROP_NONE);
	RNA_def_property_float_sdna(prop, NULL, "atm_turbidity");
	RNA_def_property_range(prop, 1.0f, 30.0f);
	RNA_def_property_ui_range(prop, 2.0f, 10.0f, 1, 2);
	RNA_def_property_ui_text(prop, "Atmosphere Turbidity", "Sky turbidity");
	RNA_def_property_update(prop, 0, "rna_Lamp_sky_update");

	prop = RNA_def_property(srna, "atmosphere_inscattering", PROP_FLOAT, PROP_NONE);
	RNA_def_property_float_sdna(prop, NULL, "atm_inscattering_factor");
	RNA_def_property_range(prop, 0.0f, 1.0f);
	RNA_def_property_ui_text(prop, "Atmosphere Inscatter", "Scatter contribution factor");
	RNA_def_property_update(prop, 0, "rna_Lamp_sky_update");

	prop = RNA_def_property(srna, "atmosphere_extinction", PROP_FLOAT, PROP_NONE);
	RNA_def_property_float_sdna(prop, NULL, "atm_extinction_factor");
	RNA_def_property_range(prop, 0.0f, 1.0f);
	RNA_def_property_ui_text(prop, "Atmosphere Extinction", "Extinction scattering contribution factor");
	RNA_def_property_update(prop, 0, "rna_Lamp_sky_update");

	prop = RNA_def_property(srna, "atmosphere_distance_factor", PROP_FLOAT, PROP_NONE);
	RNA_def_property_float_sdna(prop, NULL, "atm_distance_factor");
	RNA_def_property_range(prop, 0.0f, 500.0f);
	RNA_def_property_ui_text(prop, "Atmosphere Distance Factor",
	                         "Multiplier to convert blender units to physical distance");
	RNA_def_property_update(prop, 0, "rna_Lamp_sky_update");

	prop = RNA_def_property(srna, "sky_blend", PROP_FLOAT, PROP_NONE);
	RNA_def_property_float_sdna(prop, NULL, "skyblendfac");
	RNA_def_property_range(prop, 0.0f, 2.0f);
	RNA_def_property_ui_text(prop, "Sky Blend", "Blend factor with sky");
	RNA_def_property_update(prop, 0, "rna_Lamp_sky_update");

	prop = RNA_def_property(srna, "sky_exposure", PROP_FLOAT, PROP_NONE);
	RNA_def_property_range(prop, 0.0f, 20.0f);
	RNA_def_property_ui_text(prop, "Sky Exposure", "Strength of sky shading exponential exposure correction");
	RNA_def_property_update(prop, 0, "rna_Lamp_sky_update");

	/* boolean */
	
	prop = RNA_def_property(srna, "use_sky", PROP_BOOLEAN, PROP_NONE);
	RNA_def_property_boolean_sdna(prop, NULL, "sun_effect_type", LA_SUN_EFFECT_SKY);
	RNA_def_property_ui_text(prop, "Sky", "Apply sun effect on sky");
	RNA_def_property_update(prop, 0, "rna_Lamp_sky_update");

	prop = RNA_def_property(srna, "use_atmosphere", PROP_BOOLEAN, PROP_NONE);
	RNA_def_property_boolean_sdna(prop, NULL, "sun_effect_type", LA_SUN_EFFECT_AP);
	RNA_def_property_ui_text(prop, "Atmosphere", "Apply sun effect on atmosphere");
	RNA_def_property_update(prop, 0, "rna_Lamp_sky_update");
}

static void rna_def_lamp(BlenderRNA *brna)
{
	StructRNA *srna;
	PropertyRNA *prop;

	srna = RNA_def_struct(brna, "Lamp", "ID");
	RNA_def_struct_refine_func(srna, "rna_Lamp_refine");
	RNA_def_struct_ui_text(srna, "Lamp", "Lamp datablock for lighting a scene");
	RNA_def_struct_ui_icon(srna, ICON_LAMP_DATA);

	prop = RNA_def_property(srna, "type", PROP_ENUM, PROP_NONE);
	RNA_def_property_enum_items(prop, lamp_type_items);
	RNA_def_property_ui_text(prop, "Type", "Type of Lamp");
	RNA_def_property_translation_context(prop, BLF_I18NCONTEXT_ID_LAMP);
	RNA_def_property_update(prop, 0, "rna_Lamp_draw_update");

	prop = RNA_def_property(srna, "distance", PROP_FLOAT, PROP_DISTANCE);
	RNA_def_property_float_sdna(prop, NULL, "dist");
	RNA_def_property_range(prop, 0, INT_MAX);
	RNA_def_property_ui_range(prop, 0, 1000, 1, 3);
	RNA_def_property_ui_text(prop, "Distance",
	                         "Falloff distance - the light is at half the original intensity at this point");
	RNA_def_property_update(prop, 0, "rna_Lamp_draw_update");

	prop = RNA_def_property(srna, "energy", PROP_FLOAT, PROP_NONE);
	RNA_def_property_ui_range(prop, 0, 10, 1, 3);
	RNA_def_property_ui_text(prop, "Energy", "Amount of light that the lamp emits");
	RNA_def_property_update(prop, 0, "rna_Lamp_draw_update");

	prop = RNA_def_property(srna, "color", PROP_FLOAT, PROP_COLOR);
	RNA_def_property_float_sdna(prop, NULL, "r");
	RNA_def_property_array(prop, 3);
	RNA_def_property_ui_text(prop, "Color", "Light color");
	RNA_def_property_update(prop, 0, "rna_Lamp_draw_update");

	prop = RNA_def_property(srna, "use_own_layer", PROP_BOOLEAN, PROP_NONE);
	RNA_def_property_boolean_sdna(prop, NULL, "mode", LA_LAYER);
	RNA_def_property_ui_text(prop, "Layer", "Illuminate objects only on the same layers the lamp is on");
	RNA_def_property_update(prop, 0, "rna_Lamp_update");

	prop = RNA_def_property(srna, "use_negative", PROP_BOOLEAN, PROP_NONE);
	RNA_def_property_boolean_sdna(prop, NULL, "mode", LA_NEG);
	RNA_def_property_ui_text(prop, "Negative", "Cast negative light");
	RNA_def_property_update(prop, 0, "rna_Lamp_update");

	prop = RNA_def_property(srna, "use_specular", PROP_BOOLEAN, PROP_NONE);
	RNA_def_property_boolean_negative_sdna(prop, NULL, "mode", LA_NO_SPEC);
	RNA_def_property_ui_text(prop, "Specular", "Create specular highlights");
	RNA_def_property_update(prop, 0, "rna_Lamp_update");

	prop = RNA_def_property(srna, "use_diffuse", PROP_BOOLEAN, PROP_NONE);
	RNA_def_property_boolean_negative_sdna(prop, NULL, "mode", LA_NO_DIFF);
	RNA_def_property_ui_text(prop, "Diffuse", "Do diffuse shading");
	RNA_def_property_update(prop, 0, "rna_Lamp_update");

	/* nodes */
	prop = RNA_def_property(srna, "node_tree", PROP_POINTER, PROP_NONE);
	RNA_def_property_pointer_sdna(prop, NULL, "nodetree");
	RNA_def_property_ui_text(prop, "Node Tree", "Node tree for node based lamps");

	prop = RNA_def_property(srna, "use_nodes", PROP_BOOLEAN, PROP_NONE);
	RNA_def_property_boolean_sdna(prop, NULL, "use_nodes", 1);
	RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
	RNA_def_property_flag(prop, PROP_CONTEXT_UPDATE);
	RNA_def_property_ui_text(prop, "Use Nodes", "Use shader nodes to render the lamp");
	RNA_def_property_update(prop, 0, "rna_Lamp_use_nodes_update");
	
	/* common */
	rna_def_animdata_common(srna);
	
	/* textures */
	rna_def_mtex_common(brna, srna, "rna_Lamp_mtex_begin", "rna_Lamp_active_texture_get",
	                    "rna_Lamp_active_texture_set", NULL, "LampTextureSlot", "LampTextureSlots",
	                    "rna_Lamp_draw_update", "rna_Lamp_draw_update");
}

static void rna_def_lamp_falloff(StructRNA *srna)
{
	PropertyRNA *prop;

	static EnumPropertyItem prop_fallofftype_items[] = {
		{LA_FALLOFF_CONSTANT, "CONSTANT", 0, "Constant", ""},
		{LA_FALLOFF_INVLINEAR, "INVERSE_LINEAR", 0, "Inverse Linear", ""},
		{LA_FALLOFF_INVSQUARE, "INVERSE_SQUARE", 0, "Inverse Square", ""},
		{LA_FALLOFF_CURVE, "CUSTOM_CURVE", 0, "Custom Curve", ""},
		{LA_FALLOFF_SLIDERS, "LINEAR_QUADRATIC_WEIGHTED", 0, "Lin/Quad Weighted", ""},
		{0, NULL, 0, NULL, NULL}
	};

	prop = RNA_def_property(srna, "falloff_type", PROP_ENUM, PROP_NONE);
	RNA_def_property_enum_items(prop, prop_fallofftype_items);
	RNA_def_property_ui_text(prop, "Falloff Type", "Intensity Decay with distance");
	RNA_def_property_update(prop, 0, "rna_Lamp_update");
	
	prop = RNA_def_property(srna, "falloff_curve", PROP_POINTER, PROP_NONE);
	RNA_def_property_pointer_sdna(prop, NULL, "curfalloff");
	RNA_def_property_ui_text(prop, "Falloff Curve", "Custom Lamp Falloff Curve");
	RNA_def_property_update(prop, 0, "rna_Lamp_update");

	prop = RNA_def_property(srna, "use_sphere", PROP_BOOLEAN, PROP_NONE);
	RNA_def_property_boolean_sdna(prop, NULL, "mode", LA_SPHERE);
	RNA_def_property_ui_text(prop, "Sphere", "Set light intensity to zero beyond lamp distance");
	RNA_def_property_update(prop, 0, "rna_Lamp_draw_update");

	prop = RNA_def_property(srna, "linear_attenuation", PROP_FLOAT, PROP_NONE);
	RNA_def_property_float_sdna(prop, NULL, "att1");
	RNA_def_property_range(prop, 0.0f, 1.0f);
	RNA_def_property_ui_text(prop, "Linear Attenuation", "Linear distance attenuation");
	RNA_def_property_update(prop, 0, "rna_Lamp_draw_update");

	prop = RNA_def_property(srna, "quadratic_attenuation", PROP_FLOAT, PROP_NONE);
	RNA_def_property_float_sdna(prop, NULL, "att2");
	RNA_def_property_range(prop, 0.0f, 1.0f);
	RNA_def_property_ui_text(prop, "Quadratic Attenuation", "Quadratic distance attenuation");
	RNA_def_property_update(prop, 0, "rna_Lamp_draw_update");
}

static void rna_def_lamp_shadow(StructRNA *srna, int spot, int area)
{
	PropertyRNA *prop;

	static EnumPropertyItem prop_shadow_items[] = {
		{0, "NOSHADOW", 0, "No Shadow", ""},
		{LA_SHAD_RAY, "RAY_SHADOW", 0, "Ray Shadow", "Use ray tracing for shadow"},
		{0, NULL, 0, NULL, NULL}
	};

	static EnumPropertyItem prop_spot_shadow_items[] = {
		{0, "NOSHADOW", 0, "No Shadow", ""},
		{LA_SHAD_BUF, "BUFFER_SHADOW", 0, "Buffer Shadow", "Let spotlight produce shadows using shadow buffer"},
		{LA_SHAD_RAY, "RAY_SHADOW", 0, "Ray Shadow", "Use ray tracing for shadow"},
		{0, NULL, 0, NULL, NULL}
	};

	static EnumPropertyItem prop_ray_sampling_method_items[] = {
		{LA_SAMP_HALTON, "ADAPTIVE_QMC", 0, "Adaptive QMC", ""},
		{LA_SAMP_HAMMERSLEY, "CONSTANT_QMC", 0, "Constant QMC", ""},
		{0, NULL, 0, NULL, NULL}
	};
	
	static EnumPropertyItem prop_spot_ray_sampling_method_items[] = {
		{LA_SAMP_HALTON, "ADAPTIVE_QMC", 0, "Adaptive QMC", ""},
		{LA_SAMP_HAMMERSLEY, "CONSTANT_QMC", 0, "Constant QMC", ""},
		{LA_SAMP_CONSTANT, "CONSTANT_JITTERED", 0, "Constant Jittered", ""},
		{0, NULL, 0, NULL, NULL}
	};

	static EnumPropertyItem prop_shadbuftype_items[] = {
		{LA_SHADBUF_REGULAR, "REGULAR", 0, "Classical", "Classic shadow buffer"},
		{LA_SHADBUF_HALFWAY, "HALFWAY", 0, "Classic-Halfway",
		                     "Regular buffer, averaging the closest and 2nd closest Z value to reducing "
		                     "bias artifacts"},
		{LA_SHADBUF_IRREGULAR, "IRREGULAR", 0, "Irregular",
		                       "Irregular buffer produces sharp shadow always, but it doesn't show up for raytracing"},
		{LA_SHADBUF_DEEP, "DEEP", 0, "Deep",
		                  "Deep shadow buffer supports transparency and better filtering, at the cost of "
		                  "more memory usage and processing time"},
		{0, NULL, 0, NULL, NULL}
	};

	static EnumPropertyItem prop_shadbuffiltertype_items[] = {
		{LA_SHADBUF_BOX, "BOX", 0, "Box", "Apply the Box filter to shadow buffer samples"},
		{LA_SHADBUF_TENT, "TENT", 0, "Tent", "Apply the Tent Filter to shadow buffer samples"},
		{LA_SHADBUF_GAUSS, "GAUSS", 0, "Gauss", "Apply the Gauss filter to shadow buffer samples"},
		{0, NULL, 0, NULL, NULL}
	};

	static EnumPropertyItem prop_numbuffer_items[] = {
		{1, "BUFFERS_1", 0, "1", "Only one buffer rendered"},
		{4, "BUFFERS_4", 0, "4", "Render 4 buffers for better AA, this quadruples memory usage"},
		{9, "BUFFERS_9", 0, "9", "Render 9 buffers for better AA, this uses nine times more memory"},
		{0, NULL, 0, NULL, NULL}
	};

	/* GE only */
	static EnumPropertyItem prop_ge_shadowbuffer_type_items[] = {
		{LA_SHADMAP_SIMPLE, "SIMPLE", 0, "Simple", "Simple shadow maps"},
		{LA_SHADMAP_VARIANCE, "VARIANCE", 0, "Variance", "Variance shadow maps"},
		{0, NULL, 0, NULL, NULL}
	};

	prop = RNA_def_property(srna, "use_shadow", PROP_BOOLEAN, PROP_NONE);
	RNA_def_property_boolean_funcs(prop, "rna_use_shadow_get", "rna_use_shadow_set");
	RNA_def_property_update(prop, 0, "rna_Lamp_draw_update");

	prop = RNA_def_property(srna, "shadow_method", PROP_ENUM, PROP_NONE);
	RNA_def_property_enum_bitflag_sdna(prop, NULL, "mode");
	RNA_def_property_enum_items(prop, (spot) ? prop_spot_shadow_items : prop_shadow_items);
	RNA_def_property_update(prop, 0, "rna_Lamp_update");

	prop = RNA_def_property(srna, "shadow_buffer_size", PROP_INT, PROP_NONE);
	RNA_def_property_int_sdna(prop, NULL, "bufsize");
	RNA_def_property_range(prop, 128, 10240);
	RNA_def_property_ui_text(prop, "Shadow Buffer Size",
	                         "Resolution of the shadow buffer, higher values give crisper shadows "
	                         "but use more memory");
	RNA_def_property_int_funcs(prop, NULL, "rna_Lamp_buffer_size_set", NULL);
	RNA_def_property_update(prop, 0, "rna_Lamp_update");

	prop = RNA_def_property(srna, "shadow_filter_type", PROP_ENUM, PROP_NONE);
	RNA_def_property_enum_sdna(prop, NULL, "filtertype");
	RNA_def_property_enum_items(prop, prop_shadbuffiltertype_items);
	RNA_def_property_ui_text(prop, "Shadow Filter Type", "Type of shadow filter (Buffer Shadows)");
	RNA_def_property_update(prop, 0, "rna_Lamp_update");

	prop = RNA_def_property(srna, "shadow_sample_buffers", PROP_ENUM, PROP_NONE);
	RNA_def_property_enum_sdna(prop, NULL, "buffers");
	RNA_def_property_enum_items(prop, prop_numbuffer_items);
	RNA_def_property_ui_text(prop, "Shadow Sample Buffers",
	                         "Number of shadow buffers to render for better AA, this increases memory usage");
	RNA_def_property_update(prop, 0, "rna_Lamp_update");

	prop = RNA_def_property(srna, "shadow_buffer_clip_start", PROP_FLOAT, PROP_DISTANCE);
	RNA_def_property_float_sdna(prop, NULL, "clipsta");
	RNA_def_property_range(prop, 0.0f, 9999.0f);
	RNA_def_property_ui_text(prop, "Shadow Buffer Clip Start",
	                         "Shadow map clip start, below which objects will not generate shadows");
	RNA_def_property_update(prop, 0, "rna_Lamp_draw_update");

	prop = RNA_def_property(srna, "shadow_buffer_clip_end", PROP_FLOAT, PROP_DISTANCE);
	RNA_def_property_float_sdna(prop, NULL, "clipend");
	RNA_def_property_range(prop, 0.0f, 9999.0f);
	RNA_def_property_ui_text(prop, "Shadow Buffer Clip End",
	                         "Shadow map clip end, beyond which objects will not generate shadows");
	RNA_def_property_update(prop, 0, "rna_Lamp_draw_update");

	prop = RNA_def_property(srna, "shadow_buffer_bias", PROP_FLOAT, PROP_NONE);
	RNA_def_property_float_sdna(prop, NULL, "bias");
	RNA_def_property_range(prop, 0.001f, 5.0f);
	RNA_def_property_ui_text(prop, "Shadow Buffer Bias", "Shadow buffer sampling bias");
	RNA_def_property_update(prop, 0, "rna_Lamp_update");

	prop = RNA_def_property(srna, "shadow_buffer_bleed_bias", PROP_FLOAT, PROP_NONE);
	RNA_def_property_float_sdna(prop, NULL, "bleedbias");
	RNA_def_property_range(prop, 0.f, 1.f);
	RNA_def_property_ui_text(prop, "Shadow Buffer Bleed Bias", "Bias for reducing light-bleed on variance shadow maps");
	RNA_def_property_update(prop, 0, "rna_Lamp_update");

	prop = RNA_def_property(srna, "shadow_buffer_soft", PROP_FLOAT, PROP_NONE);
	RNA_def_property_float_sdna(prop, NULL, "soft");
	RNA_def_property_range(prop, 0.0f, 100.0f);
	RNA_def_property_ui_text(prop, "Shadow Buffer Soft", "Size of shadow buffer sampling area");
	RNA_def_property_update(prop, 0, "rna_Lamp_update");

	prop = RNA_def_property(srna, "shadow_buffer_samples", PROP_INT, PROP_NONE);
	RNA_def_property_int_sdna(prop, NULL, "samp");
	RNA_def_property_range(prop, 1, 16);
	RNA_def_property_ui_text(prop, "Samples", "Number of shadow buffer samples");
	RNA_def_property_update(prop, 0, "rna_Lamp_update");

	prop = RNA_def_property(srna, "shadow_buffer_type", PROP_ENUM, PROP_NONE);
	RNA_def_property_enum_sdna(prop, NULL, "buftype");
	RNA_def_property_enum_items(prop, prop_shadbuftype_items);
	RNA_def_property_ui_text(prop, "Shadow Buffer Type", "Type of shadow buffer");
	RNA_def_property_update(prop, 0, "rna_Lamp_update");

	prop = RNA_def_property(srna, "ge_shadow_buffer_type", PROP_ENUM, PROP_NONE);
	RNA_def_property_enum_sdna(prop, NULL, "shadowmap_type");
	RNA_def_property_enum_items(prop, prop_ge_shadowbuffer_type_items);
	RNA_def_property_ui_text(prop, "Shadow Map Type", "The shadow mapping algorithm used");
	RNA_def_property_update(prop, 0, "rna_Lamp_update");


	prop = RNA_def_property(srna, "use_auto_clip_start", PROP_BOOLEAN, PROP_NONE);
	RNA_def_property_boolean_sdna(prop, NULL, "bufflag", LA_SHADBUF_AUTO_START);
	RNA_def_property_ui_text(prop, "Autoclip Start",
	                         "Automatic calculation of clipping-start, based on visible vertices");
	RNA_def_property_update(prop, 0, "rna_Lamp_draw_update");

	prop = RNA_def_property(srna, "use_auto_clip_end", PROP_BOOLEAN, PROP_NONE);
	RNA_def_property_boolean_sdna(prop, NULL, "bufflag", LA_SHADBUF_AUTO_END);
	RNA_def_property_ui_text(prop, "Autoclip End", "Automatic calculation of clipping-end, based on visible vertices");
	RNA_def_property_update(prop, 0, "rna_Lamp_draw_update");

	prop = RNA_def_property(srna, "compression_threshold", PROP_FLOAT, PROP_NONE);
	RNA_def_property_float_sdna(prop, NULL, "compressthresh");
	RNA_def_property_range(prop, 0.0f, 1.0f);
	RNA_def_property_ui_text(prop, "Compress", "Deep shadow map compression threshold");
	RNA_def_property_update(prop, 0, "rna_Lamp_update");

	prop = RNA_def_property(srna, "shadow_color", PROP_FLOAT, PROP_COLOR);
	RNA_def_property_float_sdna(prop, NULL, "shdwr");
	RNA_def_property_array(prop, 3);
	RNA_def_property_ui_text(prop, "Shadow Color", "Color of shadows cast by the lamp");
	RNA_def_property_update(prop, 0, "rna_Lamp_update");

	prop = RNA_def_property(srna, "use_only_shadow", PROP_BOOLEAN, PROP_NONE);
	RNA_def_property_boolean_sdna(prop, NULL, "mode", LA_ONLYSHADOW);
	RNA_def_property_ui_text(prop, "Only Shadow", "Cast shadows only, without illuminating objects");
	RNA_def_property_update(prop, 0, "rna_Lamp_update");

	prop = RNA_def_property(srna, "shadow_ray_sample_method", PROP_ENUM, PROP_NONE);
	RNA_def_property_enum_sdna(prop, NULL, "ray_samp_method");
	RNA_def_property_enum_items(prop, (area) ? prop_spot_ray_sampling_method_items : prop_ray_sampling_method_items);
	RNA_def_property_ui_text(prop, "Shadow Ray Sampling Method",
	                         "Method for generating shadow samples: Adaptive QMC is fastest, "
	                         "Constant QMC is less noisy but slower");
	RNA_def_property_update(prop, 0, "rna_Lamp_update");

	prop = RNA_def_property(srna, (area) ? "shadow_ray_samples_x" : "shadow_ray_samples", PROP_INT, PROP_NONE);
	RNA_def_property_int_sdna(prop, NULL, "ray_samp");
	RNA_def_property_range(prop, 1, 64);
	RNA_def_property_ui_text(prop, (area) ? "Shadow Ray Samples" : "Shadow Ray Samples X",
	                         "Number of samples taken extra (samples x samples)");
	RNA_def_property_update(prop, 0, "rna_Lamp_update");

	if (area) {
		prop = RNA_def_property(srna, "shadow_ray_samples_y", PROP_INT, PROP_NONE);
		RNA_def_property_int_sdna(prop, NULL, "ray_sampy");
		RNA_def_property_range(prop, 1, 64);
		RNA_def_property_ui_text(prop, "Shadow Ray Samples Y",
		                         "Number of samples taken extra (samples x samples)");
		RNA_def_property_update(prop, 0, "rna_Lamp_update");
	}

	prop = RNA_def_property(srna, "shadow_adaptive_threshold", PROP_FLOAT, PROP_NONE);
	RNA_def_property_float_sdna(prop, NULL, "adapt_thresh");
	RNA_def_property_range(prop, 0.0f, 1.0f);
	RNA_def_property_ui_text(prop, "Shadow Adaptive Threshold", "Threshold for Adaptive Sampling (Raytraced shadows)");
	RNA_def_property_update(prop, 0, "rna_Lamp_update");

	prop = RNA_def_property(srna, "shadow_soft_size", PROP_FLOAT, PROP_DISTANCE);
	RNA_def_property_float_sdna(prop, NULL, "area_size");
	RNA_def_property_range(prop, 0.0f, FLT_MAX);
	RNA_def_property_ui_range(prop, 0, 100, 0.1, 3);
	RNA_def_property_ui_text(prop, "Shadow Soft Size", "Light size for ray shadow sampling (Raytraced shadows)");
	RNA_def_property_update(prop, 0, "rna_Lamp_update");

	prop = RNA_def_property(srna, "use_shadow_layer", PROP_BOOLEAN, PROP_NONE);
	RNA_def_property_boolean_sdna(prop, NULL, "mode", LA_LAYER_SHADOW);
	RNA_def_property_ui_text(prop, "Shadow Layer", "Objects on the same layers only cast shadows");
	RNA_def_property_update(prop, 0, "rna_Lamp_update");
}

static void rna_def_point_lamp(BlenderRNA *brna)
{
	StructRNA *srna;

	srna = RNA_def_struct(brna, "PointLamp", "Lamp");
	RNA_def_struct_sdna(srna, "Lamp");
	RNA_def_struct_ui_text(srna, "Point Lamp", "Omnidirectional point lamp");
	RNA_def_struct_ui_icon(srna, ICON_LAMP_POINT);

	rna_def_lamp_falloff(srna);
	rna_def_lamp_shadow(srna, 0, 0);
}

static void rna_def_area_lamp(BlenderRNA *brna)
{
	StructRNA *srna;
	PropertyRNA *prop;

	static EnumPropertyItem prop_areashape_items[] = {
		{LA_AREA_SQUARE, "SQUARE", 0, "Square", ""},
		{LA_AREA_RECT, "RECTANGLE", 0, "Rectangle", ""},
		{0, NULL, 0, NULL, NULL}
	};

	srna = RNA_def_struct(brna, "AreaLamp", "Lamp");
	RNA_def_struct_sdna(srna, "Lamp");
	RNA_def_struct_ui_text(srna, "Area Lamp", "Directional area lamp");
	RNA_def_struct_ui_icon(srna, ICON_LAMP_AREA);

	rna_def_lamp_shadow(srna, 0, 1);

	prop = RNA_def_property(srna, "use_umbra", PROP_BOOLEAN, PROP_NONE);
	RNA_def_property_boolean_sdna(prop, NULL, "ray_samp_type", LA_SAMP_UMBRA);
	RNA_def_property_ui_text(prop, "Umbra", "Emphasize parts that are fully shadowed (Constant Jittered sampling)");
	RNA_def_property_update(prop, 0, "rna_Lamp_update");

	prop = RNA_def_property(srna, "use_dither", PROP_BOOLEAN, PROP_NONE);
	RNA_def_property_boolean_sdna(prop, NULL, "ray_samp_type", LA_SAMP_DITHER);
	RNA_def_property_ui_text(prop, "Dither", "Use 2x2 dithering for sampling  (Constant Jittered sampling)");
	RNA_def_property_update(prop, 0, "rna_Lamp_update");

	prop = RNA_def_property(srna, "use_jitter", PROP_BOOLEAN, PROP_NONE);
	RNA_def_property_boolean_sdna(prop, NULL, "ray_samp_type", LA_SAMP_JITTER);
	RNA_def_property_ui_text(prop, "Jitter", "Use noise for sampling  (Constant Jittered sampling)");
	RNA_def_property_update(prop, 0, "rna_Lamp_update");

	prop = RNA_def_property(srna, "shape", PROP_ENUM, PROP_NONE);
	RNA_def_property_enum_sdna(prop, NULL, "area_shape");
	RNA_def_property_enum_items(prop, prop_areashape_items);
	RNA_def_property_ui_text(prop, "Shape", "Shape of the area lamp");
	RNA_def_property_update(prop, 0, "rna_Lamp_draw_update");

	prop = RNA_def_property(srna, "size", PROP_FLOAT, PROP_DISTANCE);
	RNA_def_property_float_sdna(prop, NULL, "area_size");
	RNA_def_property_range(prop, 0.0f, FLT_MAX);
	RNA_def_property_ui_range(prop, 0, 100, 0.1, 3);
	RNA_def_property_ui_text(prop, "Size", "Size of the area of the area Lamp, X direction size for Rectangle shapes");
	RNA_def_property_update(prop, 0, "rna_Lamp_draw_update");

	prop = RNA_def_property(srna, "size_y", PROP_FLOAT, PROP_DISTANCE);
	RNA_def_property_range(prop, 0.0f, FLT_MAX);
	RNA_def_property_float_sdna(prop, NULL, "area_sizey");
	RNA_def_property_ui_range(prop, 0, 100, 0.1, 3);
	RNA_def_property_ui_text(prop, "Size Y",
	                         "Size of the area of the area Lamp in the Y direction for Rectangle shapes");
	RNA_def_property_update(prop, 0, "rna_Lamp_draw_update");

	prop = RNA_def_property(srna, "gamma", PROP_FLOAT, PROP_NONE);
	RNA_def_property_float_sdna(prop, NULL, "k");
	RNA_def_property_ui_range(prop, 0.001, 2.0, 0.1, 3);
	RNA_def_property_ui_text(prop, "Gamma", "Light gamma correction value");
	RNA_def_property_update(prop, 0, "rna_Lamp_draw_update");
}

static void rna_def_spot_lamp(BlenderRNA *brna)
{
	StructRNA *srna;
	PropertyRNA *prop;

	srna = RNA_def_struct(brna, "SpotLamp", "Lamp");
	RNA_def_struct_sdna(srna, "Lamp");
	RNA_def_struct_ui_text(srna, "Spot Lamp", "Directional cone lamp");
	RNA_def_struct_ui_icon(srna, ICON_LAMP_SPOT);

	rna_def_lamp_falloff(srna);
	rna_def_lamp_shadow(srna, 1, 0);

	prop = RNA_def_property(srna, "use_square", PROP_BOOLEAN, PROP_NONE);
	RNA_def_property_boolean_sdna(prop, NULL, "mode", LA_SQUARE);
	RNA_def_property_ui_text(prop, "Square", "Cast a square spot light shape");
	RNA_def_property_update(prop, 0, "rna_Lamp_draw_update");

	prop = RNA_def_property(srna, "use_halo", PROP_BOOLEAN, PROP_NONE);
	RNA_def_property_boolean_sdna(prop, NULL, "mode", LA_HALO);
	RNA_def_property_ui_text(prop, "Halo", "Render spotlight with a volumetric halo");
	RNA_def_property_update(prop, 0, "rna_Lamp_update");

	prop = RNA_def_property(srna, "halo_intensity", PROP_FLOAT, PROP_NONE);
	RNA_def_property_float_sdna(prop, NULL, "haint");
	RNA_def_property_ui_range(prop, 0, 5.0, 0.1, 3);
	RNA_def_property_ui_text(prop, "Halo Intensity", "Brightness of the spotlight's halo cone");
	RNA_def_property_update(prop, 0, "rna_Lamp_update");

	prop = RNA_def_property(srna, "halo_step", PROP_INT, PROP_NONE);
	RNA_def_property_int_sdna(prop, NULL, "shadhalostep");
	RNA_def_property_range(prop, 0, 12);
	RNA_def_property_ui_text(prop, "Halo Step", "Volumetric halo sampling frequency");
	RNA_def_property_update(prop, 0, "rna_Lamp_update");

	prop = RNA_def_property(srna, "spot_blend", PROP_FLOAT, PROP_NONE);
	RNA_def_property_float_sdna(prop, NULL, "spotblend");
	RNA_def_property_range(prop, 0.0f, 1.0f);
	RNA_def_property_ui_text(prop, "Spot Blend", "The softness of the spotlight edge");
	RNA_def_property_update(prop, 0, "rna_Lamp_draw_update");

	prop = RNA_def_property(srna, "spot_size", PROP_FLOAT, PROP_ANGLE);
	RNA_def_property_float_sdna(prop, NULL, "spotsize");
	RNA_def_property_range(prop, DEG2RADF(1.0f), DEG2RADF(180.0f));
	RNA_def_property_ui_text(prop, "Spot Size", "Angle of the spotlight beam");
	RNA_def_property_update(prop, 0, "rna_Lamp_draw_update");

	prop = RNA_def_property(srna, "show_cone", PROP_BOOLEAN, PROP_NONE);
	RNA_def_property_boolean_sdna(prop, NULL, "mode", LA_SHOW_CONE);
	RNA_def_property_ui_text(prop, "Show Cone",
	                         "Draw transparent cone in 3D view to visualize which objects are contained in it");
	RNA_def_property_update(prop, 0, "rna_Lamp_draw_update");
}

static void rna_def_sun_lamp(BlenderRNA *brna)
{
	StructRNA *srna;
	PropertyRNA *prop;

	srna = RNA_def_struct(brna, "SunLamp", "Lamp");
	RNA_def_struct_sdna(srna, "Lamp");
	RNA_def_struct_ui_text(srna, "Sun Lamp", "Constant direction parallel ray lamp");
	RNA_def_struct_ui_icon(srna, ICON_LAMP_SUN);

	rna_def_lamp_shadow(srna, 0, 0);

	/* sky */
	prop = RNA_def_property(srna, "sky", PROP_POINTER, PROP_NONE);
	RNA_def_property_flag(prop, PROP_NEVER_NULL);
	RNA_def_property_struct_type(prop, "LampSkySettings");
	RNA_def_property_pointer_funcs(prop, "rna_Lamp_sky_settings_get", NULL, NULL, NULL);
	RNA_def_property_ui_text(prop, "Sky Settings", "Sky related settings for sun lamps");

	rna_def_lamp_sky_settings(brna);

	/* BGE Only */
	prop = RNA_def_property(srna, "shadow_frustum_size", PROP_FLOAT, PROP_NONE);
	RNA_def_property_float_sdna(prop, NULL, "shadow_frustum_size");
	RNA_def_property_ui_range(prop, 0.001, 100.0, 2, 1);
	RNA_def_property_ui_text(prop, "Frustum Size", "Size of the frustum used for creating the shadow map");
	RNA_def_property_update(prop, 0, "rna_Lamp_draw_update");

	prop = RNA_def_property(srna, "show_shadow_box", PROP_BOOLEAN, PROP_NONE);
	RNA_def_property_boolean_sdna(prop, NULL, "mode", LA_SHOW_SHADOW_BOX);
	RNA_def_property_ui_text(prop, "Show Shadow Box",
	                         "Draw a box in 3D view to visualize which objects are contained in it");
	RNA_def_property_update(prop, 0, "rna_Lamp_draw_update");
}

static void rna_def_hemi_lamp(BlenderRNA *brna)
{
	StructRNA *srna;

	srna = RNA_def_struct(brna, "HemiLamp", "Lamp");
	RNA_def_struct_sdna(srna, "Lamp");
	RNA_def_struct_ui_text(srna, "Hemi Lamp", "180 degree constant lamp");
	RNA_def_struct_ui_icon(srna, ICON_LAMP_HEMI);
}

void RNA_def_lamp(BlenderRNA *brna)
{
	rna_def_lamp(brna);
	rna_def_point_lamp(brna);
	rna_def_area_lamp(brna);
	rna_def_spot_lamp(brna);
	rna_def_sun_lamp(brna);
	rna_def_hemi_lamp(brna);
	rna_def_lamp_mtex(brna);
}

#endif