dd8c0a759f
If spherical harmonics are not specified in IndirectLight (i.e. omitted entirely), we instead use the roughness==1 LOD in the shader. This produce much better results with absolute HDR environment, and generally works better more often. This is now the preferred solution. For cases where spherical harmonicas are better or preferred, they can simply be supplied as before.
81 lines
2.1 KiB
C++
81 lines
2.1 KiB
C++
/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef TNT_FILAMENT_SAMPLE_IBL_H
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#define TNT_FILAMENT_SAMPLE_IBL_H
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#include <filament/Texture.h>
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#include <math/vec3.h>
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#include <string>
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namespace filament {
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class Engine;
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class IndexBuffer;
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class IndirectLight;
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class Material;
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class MaterialInstance;
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class Renderable;
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class Texture;
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class Skybox;
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}
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namespace utils {
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class Path;
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}
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class IBL {
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public:
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explicit IBL(filament::Engine& engine);
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~IBL();
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bool loadFromDirectory(const utils::Path& path);
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bool loadFromKtx(const std::string& prefix);
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filament::IndirectLight* getIndirectLight() const noexcept {
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return mIndirectLight;
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}
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filament::Skybox* getSkybox() const noexcept {
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return mSkybox;
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}
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filament::math::float3 const* getSphericalHarmonics() const { return mBands; }
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private:
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bool loadCubemapLevel(filament::Texture** texture, const utils::Path& path,
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size_t level = 0, std::string const& levelPrefix = "") const;
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bool loadCubemapLevel(filament::Texture** texture,
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filament::Texture::PixelBufferDescriptor* outBuffer,
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filament::Texture::FaceOffsets* outOffsets,
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const utils::Path& path,
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size_t level = 0, std::string const& levelPrefix = "") const;
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filament::Engine& mEngine;
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filament::math::float3 mBands[9] = {};
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filament::Texture* mTexture = nullptr;
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filament::IndirectLight* mIndirectLight = nullptr;
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filament::Texture* mSkyboxTexture = nullptr;
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filament::Skybox* mSkybox = nullptr;
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};
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#endif // TNT_FILAMENT_SAMPLE_IBL_H
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