490 lines
14 KiB
C++
490 lines
14 KiB
C++
/*
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-----------------------------------------------------------------------------
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This source file is part of VideoTexture library
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Copyright (c) 2007 The Zdeno Ash Miklas
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License as published by the Free Software
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Foundation; either version 2 of the License, or (at your option) any later
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version.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License along with
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this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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Place - Suite 330, Boston, MA 02111-1307, USA, or go to
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http://www.gnu.org/copyleft/lesser.txt.
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-----------------------------------------------------------------------------
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*/
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/** \file gameengine/VideoTexture/Texture.cpp
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* \ingroup bgevideotex
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*/
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// implementation
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#include <PyObjectPlus.h>
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#include <structmember.h>
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#include <KX_GameObject.h>
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#include <RAS_MeshObject.h>
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#include <DNA_mesh_types.h>
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#include <DNA_meshdata_types.h>
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#include <DNA_image_types.h>
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#include <IMB_imbuf_types.h>
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#include <KX_PolygonMaterial.h>
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#include <MEM_guardedalloc.h>
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#include <KX_BlenderMaterial.h>
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#include <BL_Texture.h>
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#include "KX_KetsjiEngine.h"
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#include "KX_PythonInit.h"
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#include "Texture.h"
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#include "ImageBase.h"
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#include "Exception.h"
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#include <memory.h>
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#include "GL/glew.h"
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// macro for exception handling and logging
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#define CATCH_EXCP catch (Exception & exp) \
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{ exp.report(); return NULL; }
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// Blender GameObject type
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BlendType<KX_GameObject> gameObjectType ("KX_GameObject");
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// load texture
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void loadTexture (unsigned int texId, unsigned int * texture, short * size,
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bool mipmap)
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{
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// load texture for rendering
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glBindTexture(GL_TEXTURE_2D, texId);
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if (mipmap)
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{
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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gluBuild2DMipmaps(GL_TEXTURE_2D, GL_RGBA, size[0], size[1], GL_RGBA, GL_UNSIGNED_BYTE, texture);
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}
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else
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{
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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glTexImage2D( GL_TEXTURE_2D, 0, GL_RGBA, size[0], size[1], 0, GL_RGBA, GL_UNSIGNED_BYTE, texture);
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}
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glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
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}
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// get pointer to material
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RAS_IPolyMaterial * getMaterial (PyObject *obj, short matID)
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{
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// if object is available
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if (obj != NULL)
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{
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// get pointer to texture image
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KX_GameObject * gameObj = gameObjectType.checkType(obj);
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if (gameObj != NULL && gameObj->GetMeshCount() > 0)
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{
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// get material from mesh
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RAS_MeshObject * mesh = gameObj->GetMesh(0);
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RAS_MeshMaterial *meshMat = mesh->GetMeshMaterial(matID);
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if (meshMat != NULL && meshMat->m_bucket != NULL)
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// return pointer to polygon or blender material
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return meshMat->m_bucket->GetPolyMaterial();
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}
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}
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// otherwise material was not found
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return NULL;
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}
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// get material ID
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short getMaterialID(PyObject * obj, const char *name)
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{
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// search for material
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for (short matID = 0;; ++matID)
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{
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// get material
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RAS_IPolyMaterial * mat = getMaterial(obj, matID);
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// if material is not available, report that no material was found
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if (mat == NULL)
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break;
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// name is a material name if it starts with MA and a UV texture name if it starts with IM
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if (name[0] == 'I' && name[1] == 'M')
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{
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// if texture name matches
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if (strcmp(mat->GetTextureName().ReadPtr(), name) == 0)
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return matID;
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} else
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{
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// if material name matches
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if (strcmp(mat->GetMaterialName().ReadPtr(), name) == 0)
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return matID;
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}
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}
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// material was not found
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return -1;
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}
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// Texture object allocation
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PyObject * Texture_new (PyTypeObject *type, PyObject *args, PyObject *kwds)
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{
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// allocate object
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Texture * self = reinterpret_cast<Texture*>(type->tp_alloc(type, 0));
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// initialize object structure
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self->m_actTex = 0;
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self->m_orgSaved = false;
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self->m_imgTexture = NULL;
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self->m_matTexture = NULL;
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self->m_mipmap = false;
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self->m_scaledImg = NULL;
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self->m_scaledImgSize = 0;
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self->m_source = NULL;
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self->m_lastClock = 0.0;
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// return allocated object
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return reinterpret_cast<PyObject*>(self);
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}
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// forward declaration
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PyObject * Texture_close(Texture * self);
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int Texture_setSource (Texture * self, PyObject * value, void * closure);
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// Texture object deallocation
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void Texture_dealloc (Texture * self)
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{
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// release renderer
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Py_XDECREF(self->m_source);
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// close texture
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PyObject* ret = Texture_close(self);
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Py_DECREF(ret);
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// release scaled image buffer
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delete [] self->m_scaledImg;
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// release object
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Py_TYPE((PyObject *)self)->tp_free((PyObject*)self);
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}
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ExceptionID MaterialNotAvail;
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ExpDesc MaterialNotAvailDesc (MaterialNotAvail, "Texture material is not available");
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// Texture object initialization
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int Texture_init (Texture *self, PyObject *args, PyObject *kwds)
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{
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// parameters - game object with video texture
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PyObject * obj = NULL;
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// material ID
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short matID = 0;
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// texture ID
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short texID = 0;
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// texture object with shared texture ID
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Texture * texObj = NULL;
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static const char *kwlist[] = {"gameObj", "materialID", "textureID", "textureObj", NULL};
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// get parameters
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if (!PyArg_ParseTupleAndKeywords(args, kwds, "O|hhO!",
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const_cast<char**>(kwlist), &obj, &matID, &texID, &TextureType,
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&texObj))
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return -1;
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// if parameters are available
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if (obj != NULL)
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{
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// process polygon material or blender material
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try
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{
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// get pointer to texture image
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RAS_IPolyMaterial * mat = getMaterial(obj, matID);
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if (mat != NULL)
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{
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// is it blender material or polygon material
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if (mat->GetFlag() & RAS_BLENDERGLSL)
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{
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self->m_imgTexture = static_cast<KX_BlenderMaterial*>(mat)->getImage(texID);
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self->m_useMatTexture = false;
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} else if (mat->GetFlag() & RAS_BLENDERMAT)
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{
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// get blender material texture
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self->m_matTexture = static_cast<KX_BlenderMaterial*>(mat)->getTex(texID);
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self->m_useMatTexture = true;
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}
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else
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{
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// get texture pointer from polygon material
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MTFace * tface = static_cast<KX_PolygonMaterial*>(mat)->GetMTFace();
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self->m_imgTexture = (Image*)tface->tpage;
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self->m_useMatTexture = false;
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}
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}
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// check if texture is available, if not, initialization failed
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if (self->m_imgTexture == NULL && self->m_matTexture == NULL)
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// throw exception if initialization failed
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THRWEXCP(MaterialNotAvail, S_OK);
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// if texture object is provided
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if (texObj != NULL)
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{
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// copy texture code
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self->m_actTex = texObj->m_actTex;
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self->m_mipmap = texObj->m_mipmap;
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if (texObj->m_source != NULL)
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Texture_setSource(self, reinterpret_cast<PyObject*>(texObj->m_source), NULL);
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}
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else
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// otherwise generate texture code
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glGenTextures(1, (GLuint*)&self->m_actTex);
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}
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catch (Exception & exp)
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{
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exp.report();
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return -1;
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}
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}
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// initialization succeded
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return 0;
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}
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// close added texture
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PyObject * Texture_close(Texture * self)
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{
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// restore texture
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if (self->m_orgSaved)
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{
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self->m_orgSaved = false;
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// restore original texture code
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if (self->m_useMatTexture)
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self->m_matTexture->swapTexture(self->m_orgTex);
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else
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self->m_imgTexture->bindcode = self->m_orgTex;
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// drop actual texture
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if (self->m_actTex != 0)
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{
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glDeleteTextures(1, (GLuint *)&self->m_actTex);
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self->m_actTex = 0;
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}
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}
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Py_RETURN_NONE;
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}
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// refresh texture
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PyObject * Texture_refresh (Texture * self, PyObject * args)
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{
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// get parameter - refresh source
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PyObject * param;
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double ts = -1.0;
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if (!PyArg_ParseTuple(args, "O|d:refresh", ¶m, &ts) || !PyBool_Check(param))
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{
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// report error
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PyErr_SetString(PyExc_TypeError, "The value must be a bool");
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return NULL;
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}
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// some trick here: we are in the business of loading a texture,
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// no use to do it if we are still in the same rendering frame.
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// We find this out by looking at the engine current clock time
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KX_KetsjiEngine* engine = KX_GetActiveEngine();
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if (engine->GetClockTime() != self->m_lastClock)
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{
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self->m_lastClock = engine->GetClockTime();
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// set source refresh
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bool refreshSource = (param == Py_True);
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// try to proces texture from source
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try
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{
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// if source is available
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if (self->m_source != NULL)
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{
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// check texture code
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if (!self->m_orgSaved)
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{
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self->m_orgSaved = true;
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// save original image code
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if (self->m_useMatTexture)
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self->m_orgTex = self->m_matTexture->swapTexture(self->m_actTex);
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else
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{
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self->m_orgTex = self->m_imgTexture->bindcode;
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self->m_imgTexture->bindcode = self->m_actTex;
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}
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}
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// get texture
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unsigned int * texture = self->m_source->m_image->getImage(self->m_actTex, ts);
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// if texture is available
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if (texture != NULL)
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{
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// get texture size
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short * orgSize = self->m_source->m_image->getSize();
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// calc scaled sizes
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short size[] = {ImageBase::calcSize(orgSize[0]), ImageBase::calcSize(orgSize[1])};
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// scale texture if needed
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if (size[0] != orgSize[0] || size[1] != orgSize[1])
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{
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// if scaled image buffer is smaller than needed
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if (self->m_scaledImgSize < (unsigned int)(size[0] * size[1]))
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{
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// new size
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self->m_scaledImgSize = size[0] * size[1];
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// allocate scaling image
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delete [] self->m_scaledImg;
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self->m_scaledImg = new unsigned int[self->m_scaledImgSize];
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}
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// scale texture
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gluScaleImage(GL_RGBA, orgSize[0], orgSize[1], GL_UNSIGNED_BYTE, texture,
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size[0], size[1], GL_UNSIGNED_BYTE, self->m_scaledImg);
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// use scaled image instead original
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texture = self->m_scaledImg;
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}
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// load texture for rendering
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loadTexture (self->m_actTex, texture, size, self->m_mipmap);
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// refresh texture source, if required
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if (refreshSource) self->m_source->m_image->refresh();
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}
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}
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}
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CATCH_EXCP;
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}
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Py_RETURN_NONE;
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}
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// get OpenGL Bind Id
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PyObject * Texture_getBindId (Texture * self, void * closure)
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{
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unsigned int id = self->m_actTex;
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return Py_BuildValue("h", id);
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}
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// get mipmap value
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PyObject * Texture_getMipmap (Texture * self, void * closure)
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{
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// return true if flag is set, otherwise false
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if (self->m_mipmap) Py_RETURN_TRUE;
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else Py_RETURN_FALSE;
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}
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// set mipmap value
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int Texture_setMipmap (Texture * self, PyObject * value, void * closure)
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{
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// check parameter, report failure
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if (value == NULL || !PyBool_Check(value))
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{
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PyErr_SetString(PyExc_TypeError, "The value must be a bool");
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return -1;
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}
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// set mipmap
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self->m_mipmap = value == Py_True;
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// success
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return 0;
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}
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// get source object
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PyObject * Texture_getSource (Texture * self, PyObject * value, void * closure)
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{
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// if source exists
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if (self->m_source != NULL)
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{
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Py_INCREF(self->m_source);
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return reinterpret_cast<PyObject*>(self->m_source);
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}
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// otherwise return None
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Py_RETURN_NONE;
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}
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// set source object
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int Texture_setSource (Texture * self, PyObject * value, void * closure)
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{
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// check new value
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if (value == NULL || !pyImageTypes.in(Py_TYPE(value)))
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{
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// report value error
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PyErr_SetString(PyExc_TypeError, "Invalid type of value");
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return -1;
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}
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// increase ref count for new value
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Py_INCREF(value);
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// release previous
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Py_XDECREF(self->m_source);
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// set new value
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self->m_source = reinterpret_cast<PyImage*>(value);
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// return success
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return 0;
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}
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// class Texture methods
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static PyMethodDef textureMethods[] =
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{
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{ "close", (PyCFunction)Texture_close, METH_NOARGS, "Close dynamic texture and restore original"},
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{ "refresh", (PyCFunction)Texture_refresh, METH_VARARGS, "Refresh texture from source"},
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{NULL} /* Sentinel */
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};
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// class Texture attributes
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static PyGetSetDef textureGetSets[] =
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{
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{(char*)"source", (getter)Texture_getSource, (setter)Texture_setSource, (char*)"source of texture", NULL},
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{(char*)"mipmap", (getter)Texture_getMipmap, (setter)Texture_setMipmap, (char*)"mipmap texture", NULL},
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{(char*)"bindId", (getter)Texture_getBindId, NULL, (char*)"OpenGL Bind Name", NULL},
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{NULL}
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};
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// class Texture declaration
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PyTypeObject TextureType =
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{
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PyVarObject_HEAD_INIT(NULL, 0)
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"VideoTexture.Texture", /*tp_name*/
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sizeof(Texture), /*tp_basicsize*/
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0, /*tp_itemsize*/
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(destructor)Texture_dealloc,/*tp_dealloc*/
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0, /*tp_print*/
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0, /*tp_getattr*/
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0, /*tp_setattr*/
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0, /*tp_compare*/
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0, /*tp_repr*/
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0, /*tp_as_number*/
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0, /*tp_as_sequence*/
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0, /*tp_as_mapping*/
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0, /*tp_hash */
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0, /*tp_call*/
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0, /*tp_str*/
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0, /*tp_getattro*/
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0, /*tp_setattro*/
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&imageBufferProcs, /*tp_as_buffer*/
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Py_TPFLAGS_DEFAULT, /*tp_flags*/
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"Texture objects", /* tp_doc */
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0, /* tp_traverse */
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0, /* tp_clear */
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0, /* tp_richcompare */
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0, /* tp_weaklistoffset */
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0, /* tp_iter */
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0, /* tp_iternext */
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textureMethods, /* tp_methods */
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0, /* tp_members */
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textureGetSets, /* tp_getset */
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0, /* tp_base */
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0, /* tp_dict */
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0, /* tp_descr_get */
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0, /* tp_descr_set */
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0, /* tp_dictoffset */
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(initproc)Texture_init, /* tp_init */
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0, /* tp_alloc */
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Texture_new, /* tp_new */
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};
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