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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.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): none yet.
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file gameengine/Ketsji/KX_Light.cpp
* \ingroup ketsji
*/
#ifdef _MSC_VER
# pragma warning (disable:4786)
#endif
#include <stdio.h>
#include "GL/glew.h"
#include "KX_Light.h"
#include "KX_Camera.h"
#include "RAS_IRasterizer.h"
#include "RAS_ICanvas.h"
#include "KX_PyMath.h"
#include "DNA_object_types.h"
#include "DNA_scene_types.h"
#include "DNA_lamp_types.h"
#include "GPU_material.h"
#include "BKE_scene.h"
#include "MEM_guardedalloc.h"
#include "BLI_math.h"
KX_LightObject::KX_LightObject(void* sgReplicationInfo,SG_Callbacks callbacks,
RAS_IRasterizer* rasterizer,
const RAS_LightObject& lightobj,
bool glsl)
: KX_GameObject(sgReplicationInfo,callbacks),
m_rasterizer(rasterizer)
{
m_lightobj = lightobj;
m_lightobj.m_scene = sgReplicationInfo;
m_lightobj.m_light = this;
m_rasterizer->AddLight(&m_lightobj);
m_glsl = glsl;
m_blenderscene = ((KX_Scene*)sgReplicationInfo)->GetBlenderScene();
m_base = NULL;
};
KX_LightObject::~KX_LightObject()
{
GPULamp *lamp;
Lamp *la = (Lamp*)GetBlenderObject()->data;
if ((lamp = GetGPULamp())) {
float obmat[4][4] = {{0}};
GPU_lamp_update(lamp, 0, 0, obmat);
GPU_lamp_update_distance(lamp, la->dist, la->att1, la->att2);
GPU_lamp_update_spot(lamp, la->spotsize, la->spotblend);
}
m_rasterizer->RemoveLight(&m_lightobj);
if (m_base) {
BKE_scene_base_unlink(m_blenderscene, m_base);
MEM_freeN(m_base);
}
}
CValue* KX_LightObject::GetReplica()
{
KX_LightObject* replica = new KX_LightObject(*this);
replica->ProcessReplica();
replica->m_lightobj.m_light = replica;
m_rasterizer->AddLight(&replica->m_lightobj);
if (m_base)
m_base = NULL;
return replica;
}
bool KX_LightObject::ApplyLight(KX_Scene *kxscene, int oblayer, int slot)
{
KX_Scene* lightscene = (KX_Scene*)m_lightobj.m_scene;
float vec[4];
int scenelayer = ~0;
if (kxscene && kxscene->GetBlenderScene())
scenelayer = kxscene->GetBlenderScene()->lay;
/* only use lights in the same layer as the object */
if (!(m_lightobj.m_layer & oblayer))
return false;
/* only use lights in the same scene, and in a visible layer */
if (kxscene != lightscene || !(m_lightobj.m_layer & scenelayer))
return false;
// lights don't get their openGL matrix updated, do it now
if (GetSGNode()->IsDirty())
GetOpenGLMatrix();
MT_CmMatrix4x4& worldmatrix= *GetOpenGLMatrixPtr();
vec[0] = worldmatrix(0,3);
vec[1] = worldmatrix(1,3);
vec[2] = worldmatrix(2,3);
vec[3] = 1.0f;
if (m_lightobj.m_type==RAS_LightObject::LIGHT_SUN) {
vec[0] = worldmatrix(0,2);
vec[1] = worldmatrix(1,2);
vec[2] = worldmatrix(2,2);
//vec[0] = base->object->obmat[2][0];
//vec[1] = base->object->obmat[2][1];
//vec[2] = base->object->obmat[2][2];
vec[3] = 0.0;
glLightfv((GLenum)(GL_LIGHT0+slot), GL_POSITION, vec);
}
else {
//vec[3] = 1.0;
glLightfv((GLenum)(GL_LIGHT0+slot), GL_POSITION, vec);
glLightf((GLenum)(GL_LIGHT0+slot), GL_CONSTANT_ATTENUATION, 1.0);
glLightf((GLenum)(GL_LIGHT0+slot), GL_LINEAR_ATTENUATION, m_lightobj.m_att1/m_lightobj.m_distance);
// without this next line it looks backward compatible.
//attennuation still is acceptable
glLightf((GLenum)(GL_LIGHT0+slot), GL_QUADRATIC_ATTENUATION, m_lightobj.m_att2/(m_lightobj.m_distance*m_lightobj.m_distance));
if (m_lightobj.m_type==RAS_LightObject::LIGHT_SPOT) {
vec[0] = -worldmatrix(0,2);
vec[1] = -worldmatrix(1,2);
vec[2] = -worldmatrix(2,2);
//vec[0] = -base->object->obmat[2][0];
//vec[1] = -base->object->obmat[2][1];
//vec[2] = -base->object->obmat[2][2];
glLightfv((GLenum)(GL_LIGHT0+slot), GL_SPOT_DIRECTION, vec);
glLightf((GLenum)(GL_LIGHT0+slot), GL_SPOT_CUTOFF, RAD2DEGF(m_lightobj.m_spotsize * 0.5f));
glLightf((GLenum)(GL_LIGHT0+slot), GL_SPOT_EXPONENT, 128.0f * m_lightobj.m_spotblend);
}
else {
glLightf((GLenum)(GL_LIGHT0+slot), GL_SPOT_CUTOFF, 180.0);
}
}
if (m_lightobj.m_nodiffuse) {
vec[0] = vec[1] = vec[2] = vec[3] = 0.0;
}
else {
vec[0] = m_lightobj.m_energy*m_lightobj.m_red;
vec[1] = m_lightobj.m_energy*m_lightobj.m_green;
vec[2] = m_lightobj.m_energy*m_lightobj.m_blue;
vec[3] = 1.0;
}
glLightfv((GLenum)(GL_LIGHT0+slot), GL_DIFFUSE, vec);
if (m_lightobj.m_nospecular)
{
vec[0] = vec[1] = vec[2] = vec[3] = 0.0;
}
else if (m_lightobj.m_nodiffuse) {
vec[0] = m_lightobj.m_energy*m_lightobj.m_red;
vec[1] = m_lightobj.m_energy*m_lightobj.m_green;
vec[2] = m_lightobj.m_energy*m_lightobj.m_blue;
vec[3] = 1.0;
}
glLightfv((GLenum)(GL_LIGHT0+slot), GL_SPECULAR, vec);
glEnable((GLenum)(GL_LIGHT0+slot));
return true;
}
GPULamp *KX_LightObject::GetGPULamp()
{
if (m_glsl)
return GPU_lamp_from_blender(m_blenderscene, GetBlenderObject(), GetBlenderGroupObject());
else
return NULL;
}
void KX_LightObject::Update()
{
GPULamp *lamp;
if ((lamp = GetGPULamp()) != NULL && GetSGNode()) {
float obmat[4][4];
// lights don't get their openGL matrix updated, do it now
if (GetSGNode()->IsDirty())
GetOpenGLMatrix();
double *dobmat = GetOpenGLMatrixPtr()->getPointer();
for (int i=0; i<4; i++)
for (int j=0; j<4; j++, dobmat++)
obmat[i][j] = (float)*dobmat;
GPU_lamp_update(lamp, m_lightobj.m_layer, 0, obmat);
GPU_lamp_update_colors(lamp, m_lightobj.m_red, m_lightobj.m_green,
m_lightobj.m_blue, m_lightobj.m_energy);
GPU_lamp_update_distance(lamp, m_lightobj.m_distance, m_lightobj.m_att1, m_lightobj.m_att2);
GPU_lamp_update_spot(lamp, m_lightobj.m_spotsize, m_lightobj.m_spotblend);
}
}
void KX_LightObject::UpdateScene(KX_Scene *kxscene)
{
m_lightobj.m_scene = (void*)kxscene;
m_blenderscene = kxscene->GetBlenderScene();
m_base = BKE_scene_base_add(m_blenderscene, GetBlenderObject());
}
bool KX_LightObject::HasShadowBuffer()
{
GPULamp *lamp;
if ((lamp = GetGPULamp()))
return GPU_lamp_has_shadow_buffer(lamp);
else
return false;
}
int KX_LightObject::GetShadowLayer()
{
GPULamp *lamp;
if ((lamp = GetGPULamp()))
return GPU_lamp_shadow_layer(lamp);
else
return 0;
}
void KX_LightObject::BindShadowBuffer(RAS_IRasterizer *ras, RAS_ICanvas *canvas, KX_Camera *cam, MT_Transform& camtrans)
{
GPULamp *lamp;
float viewmat[4][4], winmat[4][4];
int winsize;
/* bind framebuffer */
lamp = GetGPULamp();
GPU_lamp_shadow_buffer_bind(lamp, viewmat, &winsize, winmat);
if (GPU_lamp_shadow_buffer_type(lamp) == LA_SHADMAP_VARIANCE)
ras->SetUsingOverrideShader(true);
/* GPU_lamp_shadow_buffer_bind() changes the viewport, so update the canvas */
canvas->UpdateViewPort(0, 0, winsize, winsize);
/* setup camera transformation */
MT_Matrix4x4 modelviewmat((float*)viewmat);
MT_Matrix4x4 projectionmat((float*)winmat);
MT_Transform trans = MT_Transform((float*)viewmat);
camtrans.invert(trans);
cam->SetModelviewMatrix(modelviewmat);
cam->SetProjectionMatrix(projectionmat);
cam->NodeSetLocalPosition(camtrans.getOrigin());
cam->NodeSetLocalOrientation(camtrans.getBasis());
cam->NodeUpdateGS(0);
/* setup rasterizer transformations */
/* SetViewMatrix may use stereomode which we temporarily disable here */
RAS_IRasterizer::StereoMode stereomode = ras->GetStereoMode();
ras->SetStereoMode(RAS_IRasterizer::RAS_STEREO_NOSTEREO);
ras->SetProjectionMatrix(projectionmat);
ras->SetViewMatrix(modelviewmat, cam->NodeGetWorldOrientation(), cam->NodeGetWorldPosition(), cam->GetCameraData()->m_perspective);
ras->SetStereoMode(stereomode);
}
void KX_LightObject::UnbindShadowBuffer(RAS_IRasterizer *ras)
{
GPULamp *lamp = GetGPULamp();
GPU_lamp_shadow_buffer_unbind(lamp);
if (GPU_lamp_shadow_buffer_type(lamp) == LA_SHADMAP_VARIANCE)
ras->SetUsingOverrideShader(false);
}
struct Image *KX_LightObject::GetTextureImage(short texslot)
{
Lamp *la = (Lamp*)GetBlenderObject()->data;
if (texslot >= MAX_MTEX || texslot < 0)
{
printf("KX_LightObject::GetTextureImage(): texslot exceeds slot bounds (0-%d)\n", MAX_MTEX-1);
return NULL;
}
if (la->mtex[texslot])
return la->mtex[texslot]->tex->ima;
return NULL;
}
#ifdef WITH_PYTHON
/* ------------------------------------------------------------------------- */
/* Python Integration Hooks */
/* ------------------------------------------------------------------------- */
PyTypeObject KX_LightObject::Type = {
PyVarObject_HEAD_INIT(NULL, 0)
"KX_LightObject",
sizeof(PyObjectPlus_Proxy),
0,
py_base_dealloc,
0,
0,
0,
0,
py_base_repr,
0,
&KX_GameObject::Sequence,
&KX_GameObject::Mapping,
0,0,0,
NULL,
NULL,
0,
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
0,0,0,0,0,0,0,
Methods,
0,
0,
&KX_GameObject::Type,
0,0,0,0,0,0,
py_base_new
};
PyMethodDef KX_LightObject::Methods[] = {
{NULL,NULL} //Sentinel
};
PyAttributeDef KX_LightObject::Attributes[] = {
KX_PYATTRIBUTE_INT_RW("layer", 1, 20, true, KX_LightObject, m_lightobj.m_layer),
KX_PYATTRIBUTE_FLOAT_RW("energy", 0, 10, KX_LightObject, m_lightobj.m_energy),
KX_PYATTRIBUTE_FLOAT_RW("distance", 0.01, 5000, KX_LightObject, m_lightobj.m_distance),
KX_PYATTRIBUTE_RW_FUNCTION("color", KX_LightObject, pyattr_get_color, pyattr_set_color),
KX_PYATTRIBUTE_FLOAT_RW("lin_attenuation", 0, 1, KX_LightObject, m_lightobj.m_att1),
KX_PYATTRIBUTE_FLOAT_RW("quad_attenuation", 0, 1, KX_LightObject, m_lightobj.m_att2),
KX_PYATTRIBUTE_RW_FUNCTION("spotsize", KX_LightObject, pyattr_get_spotsize, pyattr_set_spotsize),
KX_PYATTRIBUTE_FLOAT_RW("spotblend", 0, 1, KX_LightObject, m_lightobj.m_spotblend),
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),
KX_PYATTRIBUTE_RW_FUNCTION("type", KX_LightObject, pyattr_get_type, pyattr_set_type),
{ NULL } //Sentinel
};
PyObject *KX_LightObject::pyattr_get_color(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef)
{
KX_LightObject* self = static_cast<KX_LightObject*>(self_v);
return Py_BuildValue("[fff]", self->m_lightobj.m_red, self->m_lightobj.m_green, self->m_lightobj.m_blue);
}
int KX_LightObject::pyattr_set_color(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef, PyObject *value)
{
KX_LightObject* self = static_cast<KX_LightObject*>(self_v);
MT_Vector3 color;
if (PyVecTo(value, color))
{
self->m_lightobj.m_red = color[0];
self->m_lightobj.m_green = color[1];
self->m_lightobj.m_blue = color[2];
return PY_SET_ATTR_SUCCESS;
}
return PY_SET_ATTR_FAIL;
}
PyObject *KX_LightObject::pyattr_get_spotsize(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef)
{
KX_LightObject* self = static_cast<KX_LightObject*>(self_v);
return Py_BuildValue("f", RAD2DEGF(self->m_lightobj.m_spotsize));
}
int KX_LightObject::pyattr_set_spotsize(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef, PyObject *value)
{
KX_LightObject* self = static_cast<KX_LightObject*>(self_v);
float spotsize = (float)PyFloat_AsDouble(value);
if (PyErr_Occurred())
return PY_SET_ATTR_FAIL;
if (spotsize < 1.0f)
spotsize = 1.0f;
else if (spotsize > 180.0f)
spotsize = 180.0f;
self->m_lightobj.m_spotsize = DEG2RADF(spotsize);
return PY_SET_ATTR_SUCCESS;
}
PyObject *KX_LightObject::pyattr_get_typeconst(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef)
{
PyObject *retvalue;
const char* type = attrdef->m_name;
if (!strcmp(type, "SPOT")) {
retvalue = PyLong_FromLong(RAS_LightObject::LIGHT_SPOT);
} else if (!strcmp(type, "SUN")) {
retvalue = PyLong_FromLong(RAS_LightObject::LIGHT_SUN);
} else if (!strcmp(type, "NORMAL")) {
retvalue = PyLong_FromLong(RAS_LightObject::LIGHT_NORMAL);
}
else {
/* should never happen */
PyErr_SetString(PyExc_TypeError, "light.type: internal error, invalid light type");
retvalue = NULL;
}
return retvalue;
}
PyObject *KX_LightObject::pyattr_get_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_type);
}
int KX_LightObject::pyattr_set_type(void* self_v, const KX_PYATTRIBUTE_DEF *attrdef, PyObject *value)
{
KX_LightObject* self = static_cast<KX_LightObject*>(self_v);
const int val = PyLong_AsLong(value);
if ((val==-1 && PyErr_Occurred()) || val<0 || val>2) {
PyErr_SetString(PyExc_ValueError, "light.type= val: KX_LightObject, expected an int between 0 and 2");
return PY_SET_ATTR_FAIL;
}
switch (val) {
case 0:
self->m_lightobj.m_type = self->m_lightobj.LIGHT_SPOT;
break;
case 1:
self->m_lightobj.m_type = self->m_lightobj.LIGHT_SUN;
break;
case 2:
self->m_lightobj.m_type = self->m_lightobj.LIGHT_NORMAL;
break;
}
return PY_SET_ATTR_SUCCESS;
}
#endif // WITH_PYTHON
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