C++ LLViewerTexture::getWidth方法代码示例

// Note: the caller SHOULD NOT keep the pointer that this function returns.  It may be updated as more data arrives.
LLViewerTexture* LLBumpImageList::getBrightnessDarknessImage(LLViewerFetchedTexture* src_image, U8 bump_code )
{
	llassert( (bump_code == BE_BRIGHTNESS) || (bump_code == BE_DARKNESS) );

	LLViewerTexture* bump = NULL;
	
	bump_image_map_t* entries_list = NULL;
	void (*callback_func)( BOOL success, LLViewerFetchedTexture *src_vi, LLImageRaw* src, LLImageRaw* aux_src, S32 discard_level, BOOL final, void* userdata ) = NULL;

	switch( bump_code )
	{
	case BE_BRIGHTNESS:
		entries_list = &mBrightnessEntries;
		callback_func = LLBumpImageList::onSourceBrightnessLoaded;
		break;
	case BE_DARKNESS:
		entries_list = &mDarknessEntries;
		callback_func = LLBumpImageList::onSourceDarknessLoaded;
		break;
	default:
		llassert(0);
		return NULL;
	}

	bump_image_map_t::iterator iter = entries_list->find(src_image->getID());
	if (iter != entries_list->end() && iter->second.notNull())
	{
		bump = iter->second;
	}
	else
	{
		LLPointer<LLImageRaw> raw = new LLImageRaw(1,1,1);
		raw->clear(0x77, 0x77, 0xFF, 0xFF);

		(*entries_list)[src_image->getID()] = LLViewerTextureManager::getLocalTexture( raw.get(), TRUE);
		bump = (*entries_list)[src_image->getID()]; // In case callback was called immediately and replaced the image
	}

	if (!src_image->hasCallbacks())
	{ //if image has no callbacks but resolutions don't match, trigger raw image loaded callback again
		if (src_image->getWidth() != bump->getWidth() ||
			src_image->getHeight() != bump->getHeight())// ||
			//(LLPipeline::sRenderDeferred && bump->getComponents() != 4))
		{
			src_image->setBoostLevel(LLGLTexture::BOOST_BUMP) ;
			src_image->setLoadedCallback( callback_func, 0, TRUE, FALSE, new LLUUID(src_image->getID()), NULL );
			src_image->forceToSaveRawImage(0) ;
		}
	}

	return bump;
}

BOOL LLVLComposition::generateTexture(const F32 x, const F32 y,
									  const F32 width, const F32 height)
{
	llassert(mSurfacep);
	llassert(x >= 0.f);
	llassert(y >= 0.f);

	LLTimer gen_timer;

	///////////////////////////
	//
	// Generate raw data arrays for surface textures
	//
	//

	// These have already been validated by generateComposition.
	U8* st_data[4];
	S32 st_data_size[4]; // for debugging

	for (S32 i = 0; i < 4; i++)
	{
		if (mRawImages[i].isNull())
		{
			// Read back a raw image for this discard level, if it exists
			S32 min_dim = llmin(mDetailTextures[i]->getFullWidth(), mDetailTextures[i]->getFullHeight());
			S32 ddiscard = 0;
			while (min_dim > BASE_SIZE && ddiscard < MAX_DISCARD_LEVEL)
			{
				ddiscard++;
				min_dim /= 2;
			}

			BOOL delete_raw = (mDetailTextures[i]->reloadRawImage(ddiscard) != NULL) ;
			if(mDetailTextures[i]->getRawImageLevel() != ddiscard)//raw iamge is not ready, will enter here again later.
			{
				if(delete_raw)
				{
					mDetailTextures[i]->destroyRawImage() ;
				}
				lldebugs << "cached raw data for terrain detail texture is not ready yet: " << mDetailTextures[i]->getID() << llendl;
				return FALSE;
			}

			mRawImages[i] = mDetailTextures[i]->getRawImage() ;
			if(delete_raw)
			{
				mDetailTextures[i]->destroyRawImage() ;
			}
			if (mDetailTextures[i]->getWidth(ddiscard) != BASE_SIZE ||
				mDetailTextures[i]->getHeight(ddiscard) != BASE_SIZE ||
				mDetailTextures[i]->getComponents() != 3)
			{
				LLPointer<LLImageRaw> newraw = new LLImageRaw(BASE_SIZE, BASE_SIZE, 3);
				newraw->composite(mRawImages[i]);
				mRawImages[i] = newraw; // deletes old
			}
		}
		st_data[i] = mRawImages[i]->getData();
		st_data_size[i] = mRawImages[i]->getDataSize();
	}

	///////////////////////////////////////
	//
	// Generate and clamp x/y bounding box.
	//
	//

	S32 x_begin, y_begin, x_end, y_end;
	x_begin = (S32)(x * mScaleInv);
	y_begin = (S32)(y * mScaleInv);
	x_end = llround( (x + width) * mScaleInv );
	y_end = llround( (y + width) * mScaleInv );

	if (x_end > mWidth)
	{
		llwarns << "x end > width" << llendl;
		x_end = mWidth;
	}
	if (y_end > mWidth)
	{
		llwarns << "y end > width" << llendl;
		y_end = mWidth;
	}


	///////////////////////////////////////////
	//
	// Generate target texture information, stride ratios.
	//
	//

	LLViewerTexture *texturep;
	U32 tex_width, tex_height, tex_comps;
	U32 tex_stride;
	F32 tex_x_scalef, tex_y_scalef;
	S32 tex_x_begin, tex_y_begin, tex_x_end, tex_y_end;
	F32 tex_x_ratiof, tex_y_ratiof;

	texturep = mSurfacep->getSTexture();
	tex_width = texturep->getWidth();
//.........这里部分代码省略.........