bool SFXProfile::_preloadBuffer()
{
AssertFatal( !mDescription->mIsStreaming, "SFXProfile::_preloadBuffer() - must not be called for streaming profiles" );
mBuffer = _createBuffer();
return ( !mBuffer.isNull() );
}
void EffectBillboardChain::setNbChainElements(unsigned int nbChainElements)
{
mCurrentNbChainElements = nbChainElements;
_createBuffer();
mChainElementList.resize(mCurrentNbChainElements);
}
void Sprite::create(graphics::Texture texture)
{
material_->setTexture(texture);
float width = static_cast<u32>(texture->width());
float height = static_cast<u32>(texture->height());
_createBuffer(width, height);
}
EffectBillboardChain::EffectBillboardChain(int maxNbChainElements)
{
mInitData= false;
mRadius = 0.0f;
mCurrentNbChainElements = maxNbChainElements;
_createBuffer();
// set basic white material
this->setMaterial("BaseWhiteNoLighting");
}
IntersectGrid::IntersectGrid()
{
// 缓冲区初始大小为54个顶点（9个格子）
mCurrentVertexCount = 6*9;
mRenderOp.operationType = Ogre::RenderOperation::OT_TRIANGLE_LIST;
mRenderOp.useIndexes = false;
_createBuffer();
this->setMaterial(_createIntersectGridMaterial()->getName());
this->setPolygonModeOverrideable(false);
}
void
IntersectGrid::fillPosition( const PositionArray &posArray )
{
size_t posCount = posArray.size();
if ( posCount <= 0 )
return;
// if ( posCount > mCurrentVertexCount )
// {
// 如果缓冲区不够用了，就扩容一倍
// mCurrentVertexCount = posCount<<1;
// 如果不每帧创建缓冲区的话，由于lock时用的是discard，所以上次缓冲区中的内容还是会被显示
mCurrentVertexCount = posCount;
_createBuffer();
// }
Ogre::Vector3 vmax = posArray[posCount-1];
Ogre::Vector3 vmin = posArray[0];
vmin.y -= 100.0f;
vmax.y += 100.0f;
Real sqLen = std::max(vmax.squaredLength(), vmin.squaredLength());
mRadius = Ogre::Math::Sqrt(sqLen);//
mBox.setExtents(vmin,vmax);//
getParentNode()->needUpdate();//
float *vertexPos = static_cast<float*>(vbuf->lock(Ogre::HardwareBuffer::HBL_DISCARD));
for (size_t i = 0; i < posCount; ++i)
{
*vertexPos++ = posArray[i].x;
*vertexPos++ = posArray[i].y+1;
*vertexPos++ = posArray[i].z;
Ogre::RGBA *pCol;
pCol = static_cast<Ogre::RGBA*>(static_cast<void*>(vertexPos));
// 用diffuse来做为alpha来源
Ogre::Root::getSingleton().convertColourValue(mGridsColour, pCol++ ) ;
vertexPos = static_cast<float*>(static_cast<void*>(pCol));
}
vbuf->unlock();
}
SFXBuffer* SFXProfile::getBuffer()
{
if ( mDescription->mIsStreaming )
{
// Streaming requires unique buffers per
// source, so this creates a new buffer.
if ( SFX )
return _createBuffer();
return NULL;
}
if ( mBuffer.isNull() )
_preloadBuffer();
return mBuffer;
}
void Sprite::create(const char* filePath)
{
destroy();
material_->setTextureName(filePath);
Texture texture_ = material_->texture();
float width = static_cast<u32>(texture_->width());
float height = static_cast<u32>(texture_->height());
texture_->bind();
texture_->setWrapModeS(WRAP_CLAMP);
texture_->setWrapModeT(WRAP_CLAMP);
texture_->setMagFilterMode(MIPMAP_LINEAR);
texture_->setMinFilterMode(MIPMAP_LINEAR);
texture_->unbind();
_createBuffer(width, height);
}
void Sprite::create(u32 width, u32 height)
{
destroy();
_createBuffer(width, height);
}
