156 lines
5.1 KiB
C++
156 lines
5.1 KiB
C++
/**
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* @file llfetchedgltfmaterial.cpp
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*
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* $LicenseInfo:firstyear=2022&license=viewerlgpl$
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* Second Life Viewer Source Code
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* Copyright (C) 2022, Linden Research, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License only.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
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* $/LicenseInfo$
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*/
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#include "llviewerprecompiledheaders.h"
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#include "llfetchedgltfmaterial.h"
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#include "llviewertexturelist.h"
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#include "llavatarappearancedefines.h"
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#include "llshadermgr.h"
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#include "pipeline.h"
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LLFetchedGLTFMaterial::LLFetchedGLTFMaterial()
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: LLGLTFMaterial()
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, mExpectedFlusTime(0.f)
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, mActive(true)
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, mFetching(false)
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{
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}
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LLFetchedGLTFMaterial::~LLFetchedGLTFMaterial()
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{
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}
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void LLFetchedGLTFMaterial::bind(LLViewerTexture* media_tex)
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{
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// glTF 2.0 Specification 3.9.4. Alpha Coverage
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// mAlphaCutoff is only valid for LLGLTFMaterial::ALPHA_MODE_MASK
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F32 min_alpha = -1.0;
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LLGLSLShader* shader = LLGLSLShader::sCurBoundShaderPtr;
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// override emissive and base color textures with media tex if present
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LLViewerTexture* baseColorTex = media_tex ? media_tex : mBaseColorTexture;
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LLViewerTexture* emissiveTex = media_tex ? media_tex : mEmissiveTexture;
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if (mAlphaMode == LLGLTFMaterial::ALPHA_MODE_MASK)
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{
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// dividing the alpha cutoff by transparency here allows the shader to compare against
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// the alpha value of the texture without needing the transparency value
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min_alpha = mAlphaCutoff/mBaseColor.mV[3];
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}
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shader->uniform1f(LLShaderMgr::MINIMUM_ALPHA, min_alpha);
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if (baseColorTex != nullptr)
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{
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gGL.getTexUnit(0)->bindFast(baseColorTex);
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}
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else
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{
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gGL.getTexUnit(0)->bindFast(LLViewerFetchedTexture::sWhiteImagep);
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}
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if (!LLPipeline::sShadowRender)
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{
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if (mNormalTexture.notNull())
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{
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shader->bindTexture(LLShaderMgr::BUMP_MAP, mNormalTexture);
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}
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else
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{
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shader->bindTexture(LLShaderMgr::BUMP_MAP, LLViewerFetchedTexture::sFlatNormalImagep);
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}
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if (mMetallicRoughnessTexture.notNull())
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{
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shader->bindTexture(LLShaderMgr::SPECULAR_MAP, mMetallicRoughnessTexture); // PBR linear packed Occlusion, Roughness, Metal.
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}
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else
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{
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shader->bindTexture(LLShaderMgr::SPECULAR_MAP, LLViewerFetchedTexture::sWhiteImagep);
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}
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if (emissiveTex != nullptr)
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{
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shader->bindTexture(LLShaderMgr::EMISSIVE_MAP, emissiveTex); // PBR sRGB Emissive
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}
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else
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{
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shader->bindTexture(LLShaderMgr::EMISSIVE_MAP, LLViewerFetchedTexture::sWhiteImagep);
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}
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// NOTE: base color factor is baked into vertex stream
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shader->uniform1f(LLShaderMgr::ROUGHNESS_FACTOR, mRoughnessFactor);
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shader->uniform1f(LLShaderMgr::METALLIC_FACTOR, mMetallicFactor);
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shader->uniform3fv(LLShaderMgr::EMISSIVE_COLOR, 1, mEmissiveColor.mV);
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const LLMatrix3 base_color_matrix = mTextureTransform[GLTF_TEXTURE_INFO_BASE_COLOR].asMatrix();
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shader->uniformMatrix3fv(LLShaderMgr::TEXTURE_BASECOLOR_MATRIX, 1, false, (F32*)base_color_matrix.mMatrix);
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const LLMatrix3 normal_matrix = mTextureTransform[GLTF_TEXTURE_INFO_NORMAL].asMatrix();
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shader->uniformMatrix3fv(LLShaderMgr::TEXTURE_NORMAL_MATRIX, 1, false, (F32*)normal_matrix.mMatrix);
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const LLMatrix3 metallic_roughness_matrix = mTextureTransform[GLTF_TEXTURE_INFO_METALLIC_ROUGHNESS].asMatrix();
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shader->uniformMatrix3fv(LLShaderMgr::TEXTURE_METALLIC_ROUGHNESS_MATRIX, 1, false, (F32*)metallic_roughness_matrix.mMatrix);
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const LLMatrix3 emissive_matrix = mTextureTransform[GLTF_TEXTURE_INFO_EMISSIVE].asMatrix();
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shader->uniformMatrix3fv(LLShaderMgr::TEXTURE_EMISSIVE_MATRIX, 1, false, (F32*)emissive_matrix.mMatrix);
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}
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}
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void LLFetchedGLTFMaterial::materialBegin()
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{
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llassert(!mFetching);
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mFetching = true;
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}
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void LLFetchedGLTFMaterial::onMaterialComplete(std::function<void()> material_complete)
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{
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if (!material_complete) { return; }
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if (!mFetching)
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{
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material_complete();
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return;
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}
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materialCompleteCallbacks.push_back(material_complete);
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}
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void LLFetchedGLTFMaterial::materialComplete()
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{
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llassert(mFetching);
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mFetching = false;
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for (std::function<void()> material_complete : materialCompleteCallbacks)
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{
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material_complete();
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}
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materialCompleteCallbacks.clear();
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materialCompleteCallbacks.shrink_to_fit();
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}
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