1 files changed, 174 insertions, 0 deletions
diff --git a/indra/newview/llfetchedgltfmaterial.cpp b/indra/newview/llfetchedgltfmaterial.cpp
new file mode 100644
index 0000000000..2e71b4fa87
--- /dev/null
+++ b/indra/newview/llfetchedgltfmaterial.cpp
@@ -0,0 +1,174 @@
+/**
+ * @file   llfetchedgltfmaterial.cpp
+ *
+ * $LicenseInfo:firstyear=2022&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2022, 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
+ * $/LicenseInfo$
+ */
+
+#include "llviewerprecompiledheaders.h"
+
+#include "llfetchedgltfmaterial.h"
+
+#include "llviewertexturelist.h"
+#include "llavatarappearancedefines.h"
+#include "llshadermgr.h"
+#include "pipeline.h"
+
+LLFetchedGLTFMaterial::LLFetchedGLTFMaterial()
+    : LLGLTFMaterial()
+    , mExpectedFlusTime(0.f)
+    , mActive(true)
+    , mFetching(false)
+{
+
+}
+
+LLFetchedGLTFMaterial::~LLFetchedGLTFMaterial()
+{
+    
+}
+
+LLFetchedGLTFMaterial& LLFetchedGLTFMaterial::operator=(const LLFetchedGLTFMaterial& rhs)
+{
+    LLGLTFMaterial::operator =(rhs);
+
+    mBaseColorTexture = rhs.mBaseColorTexture;
+    mNormalTexture = rhs.mNormalTexture;
+    mMetallicRoughnessTexture = rhs.mMetallicRoughnessTexture;
+    mEmissiveTexture = rhs.mEmissiveTexture;
+
+    return *this;
+}
+
+void LLFetchedGLTFMaterial::bind(LLViewerTexture* media_tex)
+{
+    // glTF 2.0 Specification 3.9.4. Alpha Coverage
+    // mAlphaCutoff is only valid for LLGLTFMaterial::ALPHA_MODE_MASK
+    F32 min_alpha = -1.0;
+
+    LLGLSLShader* shader = LLGLSLShader::sCurBoundShaderPtr;
+
+    // override emissive and base color textures with media tex if present
+    LLViewerTexture* baseColorTex = media_tex ? media_tex : mBaseColorTexture;
+    LLViewerTexture* emissiveTex = media_tex ? media_tex : mEmissiveTexture;
+
+    if (mAlphaMode == LLGLTFMaterial::ALPHA_MODE_MASK)
+    {
+        // dividing the alpha cutoff by transparency here allows the shader to compare against
+        // the alpha value of the texture without needing the transparency value
+        min_alpha = mAlphaCutoff/mBaseColor.mV[3];
+    }
+    shader->uniform1f(LLShaderMgr::MINIMUM_ALPHA, min_alpha);
+
+    if (baseColorTex != nullptr)
+    {
+        gGL.getTexUnit(0)->bindFast(baseColorTex);
+    }
+    else
+    {
+        gGL.getTexUnit(0)->bindFast(LLViewerFetchedTexture::sWhiteImagep);
+    }
+
+    if (!LLPipeline::sShadowRender)
+    {
+        if (mNormalTexture.notNull())
+        {
+            shader->bindTexture(LLShaderMgr::BUMP_MAP, mNormalTexture);
+        }
+        else
+        {
+            shader->bindTexture(LLShaderMgr::BUMP_MAP, LLViewerFetchedTexture::sFlatNormalImagep);
+        }
+
+        if (mMetallicRoughnessTexture.notNull())
+        {
+            shader->bindTexture(LLShaderMgr::SPECULAR_MAP, mMetallicRoughnessTexture); // PBR linear packed Occlusion, Roughness, Metal.
+        }
+        else
+        {
+            shader->bindTexture(LLShaderMgr::SPECULAR_MAP, LLViewerFetchedTexture::sWhiteImagep);
+        }
+
+        if (emissiveTex != nullptr)
+        {
+            shader->bindTexture(LLShaderMgr::EMISSIVE_MAP, emissiveTex);  // PBR sRGB Emissive
+        }
+        else
+        {
+            shader->bindTexture(LLShaderMgr::EMISSIVE_MAP, LLViewerFetchedTexture::sWhiteImagep);
+        }
+
+        // NOTE: base color factor is baked into vertex stream
+
+        shader->uniform1f(LLShaderMgr::ROUGHNESS_FACTOR, mRoughnessFactor);
+        shader->uniform1f(LLShaderMgr::METALLIC_FACTOR, mMetallicFactor);
+        shader->uniform3fv(LLShaderMgr::EMISSIVE_COLOR, 1, mEmissiveColor.mV);
+
+        F32 base_color_packed[8];
+        mTextureTransform[GLTF_TEXTURE_INFO_BASE_COLOR].getPacked(base_color_packed);
+        shader->uniform4fv(LLShaderMgr::TEXTURE_BASE_COLOR_TRANSFORM, 2, (F32*)base_color_packed);
+
+        F32 normal_packed[8];
+        mTextureTransform[GLTF_TEXTURE_INFO_NORMAL].getPacked(normal_packed);
+        shader->uniform4fv(LLShaderMgr::TEXTURE_NORMAL_TRANSFORM, 2, (F32*)normal_packed);
+
+        F32 metallic_roughness_packed[8];
+        mTextureTransform[GLTF_TEXTURE_INFO_METALLIC_ROUGHNESS].getPacked(metallic_roughness_packed);
+        shader->uniform4fv(LLShaderMgr::TEXTURE_METALLIC_ROUGHNESS_TRANSFORM, 2, (F32*)metallic_roughness_packed);
+
+        F32 emissive_packed[8];
+        mTextureTransform[GLTF_TEXTURE_INFO_EMISSIVE].getPacked(emissive_packed);
+        shader->uniform4fv(LLShaderMgr::TEXTURE_EMISSIVE_TRANSFORM, 2, (F32*)emissive_packed);
+    }
+
+}
+
+void LLFetchedGLTFMaterial::materialBegin()
+{
+    llassert(!mFetching);
+    mFetching = true;
+}
+
+void LLFetchedGLTFMaterial::onMaterialComplete(std::function<void()> material_complete)
+{
+    if (!material_complete) { return; }
+
+    if (!mFetching)
+    {
+        material_complete();
+        return;
+    }
+
+    materialCompleteCallbacks.push_back(material_complete);
+}
+
+void LLFetchedGLTFMaterial::materialComplete()
+{
+    llassert(mFetching);
+    mFetching = false;
+
+    for (std::function<void()> material_complete : materialCompleteCallbacks)
+    {
+        material_complete();
+    }
+    materialCompleteCallbacks.clear();
+    materialCompleteCallbacks.shrink_to_fit();
+}