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/**
* @file llgltfmaterialpreviewmgr.h
*
* $LicenseInfo:firstyear=2023&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2023, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#pragma once
#include "lldrawpool.h"
#include "lldynamictexture.h"
#include "llfetchedgltfmaterial.h"
#include "llsingleton.h"
#include "lltexture.h"
class LLGLTFPreviewTexture : public LLViewerDynamicTexture
{
protected:
LLGLTFPreviewTexture(LLPointer<LLFetchedGLTFMaterial> material, S32 width);
public:
// Width scales with size of material's textures
static LLPointer<LLGLTFPreviewTexture> create(LLPointer<LLFetchedGLTFMaterial> material);
bool needsRender() override;
void preRender(bool clear_depth = true) override;
bool render() override;
void postRender(bool success) override;
struct MaterialLoadLevels
{
S32 levels[LLGLTFMaterial::GLTF_TEXTURE_INFO_COUNT];
MaterialLoadLevels();
bool isFullyLoaded();
S32& operator[](size_t i);
const S32& operator[](size_t i) const;
// Less is better
// Returns false if lhs is not strictly less or equal for all levels
bool operator<(const MaterialLoadLevels& other) const;
// Less is better
// Returns false if lhs is not strictly greater or equal for all levels
bool operator>(const MaterialLoadLevels& other) const;
};
private:
LLPointer<LLFetchedGLTFMaterial> mGLTFMaterial;
bool mShouldRender = true;
MaterialLoadLevels mBestLoad;
};
class LLGLTFMaterialPreviewMgr
{
public:
// Returns null if the material is not loaded yet.
// *NOTE: User should cache the texture if the same material is being previewed
LLPointer<LLViewerTexture> getPreview(LLPointer<LLFetchedGLTFMaterial> &material);
};
extern LLGLTFMaterialPreviewMgr gGLTFMaterialPreviewMgr;
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