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blender/source/gameengine/Ketsji/KX_Light.cpp

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/**
* $Id$
* ***** 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 *****
*/
#ifdef WIN32
#pragma warning (disable : 4786)
#endif
#include "GL/glew.h"
#include "KX_Light.h"
#include "KX_Camera.h"
#include "RAS_IRasterizer.h"
#include "RAS_IRenderTools.h"
#include "KX_PyMath.h"
#include "DNA_object_types.h"
#include "DNA_scene_types.h"
#include "GPU_material.h"
KX_LightObject::KX_LightObject(void* sgReplicationInfo,SG_Callbacks callbacks,
class RAS_IRenderTools* rendertools,
const RAS_LightObject& lightobj,
bool glsl)
: KX_GameObject(sgReplicationInfo,callbacks),
m_rendertools(rendertools)
{
m_lightobj = lightobj;
m_lightobj.m_scene = sgReplicationInfo;
m_lightobj.m_light = this;
m_rendertools->AddLight(&m_lightobj);
m_glsl = glsl;
m_blenderscene = ((KX_Scene*)sgReplicationInfo)->GetBlenderScene();
};
KX_LightObject::~KX_LightObject()
{
GPULamp *lamp;
if((lamp = GetGPULamp())) {
float obmat[4][4] = {{0}};
GPU_lamp_update(lamp, 0, obmat);
}
m_rendertools->RemoveLight(&m_lightobj);
}
CValue* KX_LightObject::GetReplica()
{
KX_LightObject* replica = new KX_LightObject(*this);
replica->ProcessReplica();
replica->m_lightobj.m_light = replica;
m_rendertools->AddLight(&replica->m_lightobj);
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, m_lightobj.m_spotsize/2.0);
glLightf((GLenum)(GL_LIGHT0+slot), GL_SPOT_EXPONENT, 128.0*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 false;
}
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, obmat);
GPU_lamp_update_colors(lamp, m_lightobj.m_red, m_lightobj.m_green,
m_lightobj.m_blue, m_lightobj.m_energy);
}
}
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, 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);
/* 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 */
ras->SetProjectionMatrix(projectionmat);
ras->SetViewMatrix(modelviewmat, cam->NodeGetWorldOrientation(), cam->NodeGetWorldPosition(), cam->GetCameraData()->m_perspective);
}
void KX_LightObject::UnbindShadowBuffer(RAS_IRasterizer *ras)
{
GPULamp *lamp = GetGPULamp();
GPU_lamp_shadow_buffer_unbind(lamp);
}
#ifndef DISABLE_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_RW_FUNCTION("colour", 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_FLOAT_RW("spotsize", 1, 180, KX_LightObject, m_lightobj.m_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_typeconst(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef)
{
PyObject* retvalue;
const char* type = attrdef->m_name;
if(!strcmp(type, "SPOT")) {
retvalue = PyLong_FromSsize_t(RAS_LightObject::LIGHT_SPOT);
} else if (!strcmp(type, "SUN")) {
retvalue = PyLong_FromSsize_t(RAS_LightObject::LIGHT_SUN);
} else if (!strcmp(type, "NORMAL")) {
retvalue = PyLong_FromSsize_t(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_FromSsize_t(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);
int val = PyLong_AsSsize_t(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 // DISABLE_PYTHON
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