BGE: Allow access to light shadow settings with python

This patch adds a new API which allow us to access light shadow settings from python. The new API can be used to write custom GLSL materials with shadows.

Reviewers: brecht, kupoman, agoose77, panzergame, campbellbarton, moguri, hg1

Reviewed By: agoose77, panzergame, campbellbarton, moguri, hg1

Projects: #game_engine

Differential Revision: https://developer.blender.org/D1690

2 files changed, 80 insertions, 0 deletions

diff --git a/source/gameengine/Ketsji/KX_Light.cpp b/source/gameengine/Ketsji/KX_Light.cpp
index b681f10804a..9ccf60b15ce 100644
--- a/source/gameengine/Ketsji/KX_Light.cpp
+++ b/source/gameengine/Ketsji/KX_Light.cpp
@@ -158,6 +158,16 @@ PyAttributeDef KX_LightObject::Attributes[] = {
 	KX_PYATTRIBUTE_RW_FUNCTION("quad_attenuation", KX_LightObject, pyattr_get_quad_attenuation, pyattr_set_quad_attenuation),
 	KX_PYATTRIBUTE_RW_FUNCTION("spotsize", KX_LightObject, pyattr_get_spotsize, pyattr_set_spotsize),
 	KX_PYATTRIBUTE_RW_FUNCTION("spotblend", KX_LightObject, pyattr_get_spotblend, pyattr_set_spotblend),
+	KX_PYATTRIBUTE_RO_FUNCTION("shadowClipStart", KX_LightObject, pyattr_get_shadow_clip_start),
+	KX_PYATTRIBUTE_RO_FUNCTION("shadowClipEnd", KX_LightObject, pyattr_get_shadow_clip_end),
+	KX_PYATTRIBUTE_RO_FUNCTION("shadowFrustumSize", KX_LightObject, pyattr_get_shadow_frustum_size),
+	KX_PYATTRIBUTE_RO_FUNCTION("shadowBias", KX_LightObject, pyattr_get_shadow_bias),
+	KX_PYATTRIBUTE_RO_FUNCTION("shadowBleedBias", KX_LightObject, pyattr_get_shadow_bleed_bias),
+	KX_PYATTRIBUTE_RO_FUNCTION("shadowBindId", KX_LightObject, pyattr_get_shadow_bind_code),
+	KX_PYATTRIBUTE_RO_FUNCTION("shadowMapType", KX_LightObject, pyattr_get_shadow_map_type),
+	KX_PYATTRIBUTE_RO_FUNCTION("shadowColor", KX_LightObject, pyattr_get_shadow_color),
+	KX_PYATTRIBUTE_RO_FUNCTION("useShadow", KX_LightObject, pyattr_get_shadow_active),
+	KX_PYATTRIBUTE_RO_FUNCTION("shadowMatrix", KX_LightObject, pyattr_get_shadow_matrix),
 	KX_PYATTRIBUTE_RO_FUNCTION("SPOT", KX_LightObject, pyattr_get_typeconst),
 	KX_PYATTRIBUTE_RO_FUNCTION("SUN", KX_LightObject, pyattr_get_typeconst),
 	KX_PYATTRIBUTE_RO_FUNCTION("NORMAL", KX_LightObject, pyattr_get_typeconst),
@@ -219,6 +229,66 @@ int KX_LightObject::pyattr_set_energy(void *self_v, const KX_PYATTRIBUTE_DEF *at
 	return PY_SET_ATTR_FAIL;
 }
 
+PyObject *KX_LightObject::pyattr_get_shadow_clip_start(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef)
+{
+	KX_LightObject *self = static_cast<KX_LightObject *>(self_v);
+	return PyFloat_FromDouble(self->m_lightobj->m_shadowclipstart);
+}
+
+PyObject *KX_LightObject::pyattr_get_shadow_clip_end(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef)
+{
+	KX_LightObject *self = static_cast<KX_LightObject *>(self_v);
+	return PyFloat_FromDouble(self->m_lightobj->m_shadowclipend);
+}
+
+PyObject *KX_LightObject::pyattr_get_shadow_frustum_size(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef)
+{
+	KX_LightObject *self = static_cast<KX_LightObject *>(self_v);
+	return PyFloat_FromDouble(self->m_lightobj->m_shadowfrustumsize);
+}
+
+PyObject *KX_LightObject::pyattr_get_shadow_bind_code(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef)
+{
+	KX_LightObject *self = static_cast<KX_LightObject *>(self_v);
+	return PyLong_FromLong(self->m_lightobj->GetShadowBindCode());
+}
+
+PyObject *KX_LightObject::pyattr_get_shadow_bias(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef)
+{
+	KX_LightObject *self = static_cast<KX_LightObject *>(self_v);
+	return PyFloat_FromDouble(self->m_lightobj->m_shadowbias);
+}
+
+PyObject *KX_LightObject::pyattr_get_shadow_bleed_bias(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef)
+{
+	KX_LightObject *self = static_cast<KX_LightObject *>(self_v);
+	return PyFloat_FromDouble(self->m_lightobj->m_shadowbleedbias);
+}
+
+PyObject *KX_LightObject::pyattr_get_shadow_map_type(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef)
+{
+	KX_LightObject *self = static_cast<KX_LightObject *>(self_v);
+	return PyLong_FromLong(self->m_lightobj->m_shadowmaptype);
+}
+
+PyObject *KX_LightObject::pyattr_get_shadow_matrix(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef)
+{
+	KX_LightObject *self = static_cast<KX_LightObject *>(self_v);
+	return PyObjectFrom(self->m_lightobj->GetShadowMatrix());
+}
+
+PyObject *KX_LightObject::pyattr_get_shadow_color(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef)
+{
+	KX_LightObject *self = static_cast<KX_LightObject *>(self_v);
+	return PyColorFromVector(MT_Vector3(self->m_lightobj->m_shadowcolor));
+}
+
+PyObject *KX_LightObject::pyattr_get_shadow_active(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef)
+{
+	KX_LightObject *self = static_cast<KX_LightObject *>(self_v);
+	return PyBool_FromLong(self->m_lightobj->HasShadowBuffer());
+}
+
 PyObject *KX_LightObject::pyattr_get_distance(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef)
 {
 	KX_LightObject* self = static_cast<KX_LightObject*>(self_v);
diff --git a/source/gameengine/Ketsji/KX_Light.h b/source/gameengine/Ketsji/KX_Light.h
index 3a58584223d..b446acd6e63 100644
--- a/source/gameengine/Ketsji/KX_Light.h
+++ b/source/gameengine/Ketsji/KX_Light.h
@@ -70,6 +70,16 @@ public:
 	static int			pyattr_set_layer(void* self_v, const KX_PYATTRIBUTE_DEF *attrdef, PyObject *value);
 	static PyObject*	pyattr_get_energy(void* self_v, const KX_PYATTRIBUTE_DEF *attrdef);
 	static int			pyattr_set_energy(void* self_v, const KX_PYATTRIBUTE_DEF *attrdef, PyObject *value);
+	static PyObject		*pyattr_get_shadow_clip_start(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef);
+	static PyObject		*pyattr_get_shadow_clip_end(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef);
+	static PyObject		*pyattr_get_shadow_frustum_size(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef);
+	static PyObject		*pyattr_get_shadow_bind_code(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef);
+	static PyObject		*pyattr_get_shadow_bias(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef);
+	static PyObject		*pyattr_get_shadow_bleed_bias(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef);
+	static PyObject		*pyattr_get_shadow_map_type(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef);
+	static PyObject		*pyattr_get_shadow_color(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef);
+	static PyObject		*pyattr_get_shadow_active(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef);
+	static PyObject		*pyattr_get_shadow_matrix(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef);
 	static PyObject*	pyattr_get_distance(void* self_v, const KX_PYATTRIBUTE_DEF *attrdef);
 	static int			pyattr_set_distance(void* self_v, const KX_PYATTRIBUTE_DEF *attrdef, PyObject *value);
 	static PyObject*	pyattr_get_color(void* self_v, const KX_PYATTRIBUTE_DEF *attrdef);