rna_lamp.c

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/*
 * ***** 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 *****
 */

#include <stdlib.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"

#include "BLI_math_base.h"

#ifdef RNA_RUNTIME

#include "MEM_guardedalloc.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, 512, 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 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 *scene, PointerRNA *ptr)
{
    Lamp *la= ptr->id.data;

    DAG_id_tag_update(&la->id, 0);
    if(scene->gm.matmode == GAME_MAT_GLSL)
        WM_main_add_notifier(NC_LAMP|ND_LIGHTING_DRAW, la);
    else
        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);
}

/* only for rad/deg conversion! can remove later */
static float rna_Lamp_spot_size_get(PointerRNA *ptr)
{
    Lamp *la= ptr->id.data;
    return DEG2RADF(la->spotsize);
}

static void rna_Lamp_spot_size_set(PointerRNA *ptr, float value)
{
    Lamp *la= ptr->id.data;
    la->spotsize= RAD2DEGF(value);
}

static void rna_Lamp_use_nodes_update(Main *blain, Scene *scene, PointerRNA *ptr)
{
    Lamp *la= (Lamp*)ptr->data;

    if(la->use_nodes && la->nodetree==NULL)
        ED_node_shader_default(scene, &la->id);
    
    rna_Lamp_update(blain, scene, ptr);
}

#else

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_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_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_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}};

    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_ui_text(prop, "Shadow Method", "Method to compute lamp shadow with");
    RNA_def_property_update(prop, 0, "rna_Lamp_draw_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_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_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_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;

    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}};

    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, "shadow_buffer_size", PROP_INT, PROP_NONE);
    RNA_def_property_int_sdna(prop, NULL, "bufsize");
    RNA_def_property_range(prop, 512, 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, "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, M_PI/180.0, M_PI);
    RNA_def_property_ui_text(prop, "Spot Size", "Angle of the spotlight beam");
    RNA_def_property_float_funcs(prop, "rna_Lamp_spot_size_get", "rna_Lamp_spot_size_set", NULL); /* only for deg/rad conversion */
    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");

    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_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, "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");
}

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);
}

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