1 files changed, 291 insertions, 31 deletions

diff --git a/indra/newview/lldrawpoolterrain.cpp b/indra/newview/lldrawpoolterrain.cpp
index c86c4b3472..2897f3d749 100644
--- a/indra/newview/lldrawpoolterrain.cpp
+++ b/indra/newview/lldrawpoolterrain.cpp
@@ -54,8 +54,9 @@
 const F32 DETAIL_SCALE = 1.f/16.f;
 int DebugDetailMap = 0;
 
-S32 LLDrawPoolTerrain::sDetailMode = 1;
+S32 LLDrawPoolTerrain::sPBRDetailMode = 0;
 F32 LLDrawPoolTerrain::sDetailScale = DETAIL_SCALE;
+F32 LLDrawPoolTerrain::sPBRDetailScale = DETAIL_SCALE;
 static LLGLSLShader* sShader = NULL;
 static LLTrace::BlockTimerStatHandle FTM_SHADOW_TERRAIN("Terrain Shadow");
 
@@ -66,7 +67,8 @@ LLDrawPoolTerrain::LLDrawPoolTerrain(LLViewerTexture *texturep) :
 {
     // Hack!
     sDetailScale = 1.f/gSavedSettings.getF32("RenderTerrainScale");
-    sDetailMode = gSavedSettings.getS32("RenderTerrainDetail");
+    sPBRDetailScale = 1.f/gSavedSettings.getF32("RenderTerrainPBRScale");
+    sPBRDetailMode = gSavedSettings.getS32("RenderTerrainPBRDetail");
     mAlphaRampImagep = LLViewerTextureManager::getFetchedTexture(IMG_ALPHA_GRAD);
 
     //gGL.getTexUnit(0)->bind(mAlphaRampImagep.get());
@@ -105,13 +107,7 @@ U32 LLDrawPoolTerrain::getVertexDataMask()
 
 void LLDrawPoolTerrain::prerender()
 {
-    sDetailMode = gSavedSettings.getS32("RenderTerrainDetail");
-}
-
-//static
-S32 LLDrawPoolTerrain::getDetailMode()
-{
-    return sDetailMode;
+    sPBRDetailMode = gSavedSettings.getS32("RenderTerrainPBRDetail");
 }
 
 void LLDrawPoolTerrain::boostTerrainDetailTextures()
@@ -119,21 +115,13 @@ void LLDrawPoolTerrain::boostTerrainDetailTextures()
     // Hack! Get the region that this draw pool is rendering from!
     LLViewerRegion *regionp = mDrawFace[0]->getDrawable()->getVObj()->getRegion();
     LLVLComposition *compp = regionp->getComposition();
-    for (S32 i = 0; i < 4; i++)
-    {
-        compp->mDetailTextures[i]->setBoostLevel(LLGLTexture::BOOST_TERRAIN);
-        compp->mDetailTextures[i]->addTextureStats(1024.f * 1024.f);
-    }
+    compp->boost();
 }
 
 void LLDrawPoolTerrain::beginDeferredPass(S32 pass)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_DRAWPOOL; //LL_RECORD_BLOCK_TIME(FTM_RENDER_TERRAIN);
     LLFacePool::beginRenderPass(pass);
-
-    sShader = &gDeferredTerrainProgram;
-
-    sShader->bind();
 }
 
 void LLDrawPoolTerrain::endDeferredPass(S32 pass)
@@ -204,19 +192,8 @@ void LLDrawPoolTerrain::drawLoop()
         {
             LLFace *facep = *iter;
 
-            LLMatrix4* model_matrix = &(facep->getDrawable()->getRegion()->mRenderMatrix);
-
-            if (model_matrix != gGLLastMatrix)
-            {
-                llassert(gGL.getMatrixMode() == LLRender::MM_MODELVIEW);
-                gGLLastMatrix = model_matrix;
-                gGL.loadMatrix(gGLModelView);
-                if (model_matrix)
-                {
-                    gGL.multMatrix((GLfloat*) model_matrix->mMatrix);
-                }
-                gPipeline.mMatrixOpCount++;
-            }
+            llassert(gGL.getMatrixMode() == LLRender::MM_MODELVIEW);
+            LLRenderPass::applyModelMatrix(&facep->getDrawable()->getRegion()->mRenderMatrix);
 
             facep->renderIndexed();
         }
@@ -225,9 +202,34 @@ void LLDrawPoolTerrain::drawLoop()
 
 void LLDrawPoolTerrain::renderFullShader()
 {
+    const bool use_local_materials = gLocalTerrainMaterials.materialsReady(true, false);
     // Hack! Get the region that this draw pool is rendering from!
     LLViewerRegion *regionp = mDrawFace[0]->getDrawable()->getVObj()->getRegion();
     LLVLComposition *compp = regionp->getComposition();
+    const bool use_textures = !use_local_materials && (compp->getMaterialType() == LLTerrainMaterials::Type::TEXTURE);
+
+    if (use_textures)
+    {
+        // Use textures
+        sShader = &gDeferredTerrainProgram;
+        sShader->bind();
+        renderFullShaderTextures();
+    }
+    else
+    {
+        // Use materials
+        sShader = &gDeferredPBRTerrainProgram;
+        sShader->bind();
+        renderFullShaderPBR(use_local_materials);
+    }
+}
+
+void LLDrawPoolTerrain::renderFullShaderTextures()
+{
+    // Hack! Get the region that this draw pool is rendering from!
+    LLViewerRegion *regionp = mDrawFace[0]->getDrawable()->getVObj()->getRegion();
+    LLVLComposition *compp = regionp->getComposition();
+
     LLViewerTexture *detail_texture0p = compp->mDetailTextures[0];
     LLViewerTexture *detail_texture1p = compp->mDetailTextures[1];
     LLViewerTexture *detail_texture2p = compp->mDetailTextures[2];
@@ -322,6 +324,264 @@ void LLDrawPoolTerrain::renderFullShader()
     gGL.getTexUnit(detail0)->activate();
 }
 
+// *TODO: Investigate use of bindFast for PBR terrain textures
+void LLDrawPoolTerrain::renderFullShaderPBR(bool local_materials)
+{
+    // Hack! Get the region that this draw pool is rendering from!
+    LLViewerRegion *regionp = mDrawFace[0]->getDrawable()->getVObj()->getRegion();
+    LLVLComposition *compp = regionp->getComposition();
+    LLPointer<LLFetchedGLTFMaterial> (*fetched_materials)[LLVLComposition::ASSET_COUNT] = &compp->mDetailRenderMaterials;
+
+    constexpr U32 terrain_material_count = LLVLComposition::ASSET_COUNT;
+#ifdef SHOW_ASSERT
+    constexpr U32 shader_material_count = 1 + LLViewerShaderMgr::TERRAIN_DETAIL3_BASE_COLOR - LLViewerShaderMgr::TERRAIN_DETAIL0_BASE_COLOR;
+    llassert(shader_material_count == terrain_material_count);
+#endif
+
+    if (local_materials)
+    {
+        // Override region terrain with the global local override terrain
+        fetched_materials = &gLocalTerrainMaterials.mDetailRenderMaterials;
+    }
+    const LLGLTFMaterial* materials[terrain_material_count];
+    for (U32 i = 0; i < terrain_material_count; ++i)
+    {
+        materials[i] = (*fetched_materials)[i].get();
+        if (!materials[i]) { materials[i] = &LLGLTFMaterial::sDefault; }
+    }
+
+    S32 detail_basecolor[terrain_material_count];
+    S32 detail_normal[terrain_material_count];
+    S32 detail_metalrough[terrain_material_count];
+    S32 detail_emissive[terrain_material_count];
+
+    for (U32 i = 0; i < terrain_material_count; ++i)
+    {
+        LLViewerTexture* detail_basecolor_texturep = nullptr;
+        LLViewerTexture* detail_normal_texturep = nullptr;
+        LLViewerTexture* detail_metalrough_texturep = nullptr;
+        LLViewerTexture* detail_emissive_texturep = nullptr;
+
+        const LLFetchedGLTFMaterial* fetched_material = (*fetched_materials)[i].get();
+        if (fetched_material)
+        {
+            detail_basecolor_texturep = fetched_material->mBaseColorTexture;
+            detail_normal_texturep = fetched_material->mNormalTexture;
+            detail_metalrough_texturep = fetched_material->mMetallicRoughnessTexture;
+            detail_emissive_texturep = fetched_material->mEmissiveTexture;
+        }
+
+        detail_basecolor[i] = sShader->enableTexture(LLViewerShaderMgr::TERRAIN_DETAIL0_BASE_COLOR + i);
+        if (detail_basecolor_texturep)
+        {
+            gGL.getTexUnit(detail_basecolor[i])->bind(detail_basecolor_texturep);
+        }
+        else
+        {
+            gGL.getTexUnit(detail_basecolor[i])->bind(LLViewerFetchedTexture::sWhiteImagep);
+        }
+        gGL.getTexUnit(detail_basecolor[i])->setTextureAddressMode(LLTexUnit::TAM_WRAP);
+        gGL.getTexUnit(detail_basecolor[i])->activate();
+
+        if (sPBRDetailMode >= TERRAIN_PBR_DETAIL_NORMAL)
+        {
+            detail_normal[i] = sShader->enableTexture(LLViewerShaderMgr::TERRAIN_DETAIL0_NORMAL + i);
+            if (detail_normal_texturep)
+            {
+                gGL.getTexUnit(detail_normal[i])->bind(detail_normal_texturep);
+            }
+            else
+            {
+                gGL.getTexUnit(detail_normal[i])->bind(LLViewerFetchedTexture::sFlatNormalImagep);
+            }
+            gGL.getTexUnit(detail_normal[i])->setTextureAddressMode(LLTexUnit::TAM_WRAP);
+            gGL.getTexUnit(detail_normal[i])->activate();
+        }
+
+        if (sPBRDetailMode >= TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS)
+        {
+            detail_metalrough[i] = sShader->enableTexture(LLViewerShaderMgr::TERRAIN_DETAIL0_METALLIC_ROUGHNESS + i);
+            if (detail_metalrough_texturep)
+            {
+                gGL.getTexUnit(detail_metalrough[i])->bind(detail_metalrough_texturep);
+            }
+            else
+            {
+                gGL.getTexUnit(detail_metalrough[i])->bind(LLViewerFetchedTexture::sWhiteImagep);
+            }
+            gGL.getTexUnit(detail_metalrough[i])->setTextureAddressMode(LLTexUnit::TAM_WRAP);
+            gGL.getTexUnit(detail_metalrough[i])->activate();
+        }
+
+        if (sPBRDetailMode >= TERRAIN_PBR_DETAIL_EMISSIVE)
+        {
+            detail_emissive[i] = sShader->enableTexture(LLViewerShaderMgr::TERRAIN_DETAIL0_EMISSIVE + i);
+            if (detail_emissive_texturep)
+            {
+                gGL.getTexUnit(detail_emissive[i])->bind(detail_emissive_texturep);
+            }
+            else
+            {
+                gGL.getTexUnit(detail_emissive[i])->bind(LLViewerFetchedTexture::sWhiteImagep);
+            }
+            gGL.getTexUnit(detail_emissive[i])->setTextureAddressMode(LLTexUnit::TAM_WRAP);
+            gGL.getTexUnit(detail_emissive[i])->activate();
+        }
+    }
+
+    LLGLSLShader* shader = LLGLSLShader::sCurBoundShaderPtr;
+    llassert(shader);
+
+    // Like for PBR materials, PBR terrain texture transforms are defined by
+    // the KHR_texture_transform spec, but with the following notable
+    // differences:
+    //   1) The PBR UV origin is defined as the Southwest corner of the region,
+    //      with positive U facing East and positive V facing South.
+    //   2) There is an additional scaling factor RenderTerrainPBRScale. If
+    //      we've done our math right, RenderTerrainPBRScale should not affect the
+    //      overall behavior of KHR_texture_transform
+    //   3) There is only one texture transform per material, whereas
+    //      KHR_texture_transform supports one texture transform per texture info.
+    //      i.e. this isn't fully compliant with KHR_texture_transform, but is
+    //      compliant when all texture infos used by a material have the same
+    //      texture transform.
+    LLGLTFMaterial::TextureTransform::PackTight transforms_packed[terrain_material_count];
+    for (U32 i = 0; i < terrain_material_count; ++i)
+    {
+        const LLFetchedGLTFMaterial* fetched_material = (*fetched_materials)[i].get();
+        LLGLTFMaterial::TextureTransform transform;
+        if (fetched_material)
+        {
+            transform = fetched_material->mTextureTransform[LLGLTFMaterial::GLTF_TEXTURE_INFO_BASE_COLOR];
+#ifdef SHOW_ASSERT
+            // Assert condition where the contents of the texture transforms
+            // differ per texture info - we currently don't support this case.
+            for (U32 ti = 1; ti < LLGLTFMaterial::GLTF_TEXTURE_INFO_COUNT; ++ti)
+            {
+                llassert(fetched_material->mTextureTransform[0] == fetched_material->mTextureTransform[ti]);
+            }
+#endif
+        }
+        // *NOTE: Notice here we are combining the scale from
+        // RenderTerrainPBRScale into the KHR_texture_transform. This only
+        // works if the scale is uniform and no other transforms are
+        // applied to the terrain UVs.
+        transform.mScale.mV[VX] *= sPBRDetailScale;
+        transform.mScale.mV[VY] *= sPBRDetailScale;
+
+        transform.getPackedTight(transforms_packed[i]);
+    }
+    const U32 transform_param_count = LLGLTFMaterial::TextureTransform::PACK_TIGHT_SIZE * terrain_material_count;
+    constexpr U32 vec4_size = 4;
+    const U32 transform_vec4_count = (transform_param_count + (vec4_size - 1)) / vec4_size;
+    llassert(transform_vec4_count == 5); // If false, need to update shader
+    shader->uniform4fv(LLShaderMgr::TERRAIN_TEXTURE_TRANSFORMS, transform_vec4_count, (F32*)transforms_packed);
+
+    LLSettingsWater::ptr_t pwater = LLEnvironment::instance().getCurrentWater();
+
+    //
+    // Alpha Ramp
+    //
+    S32 alpha_ramp = sShader->enableTexture(LLViewerShaderMgr::TERRAIN_ALPHARAMP);
+    gGL.getTexUnit(alpha_ramp)->bind(m2DAlphaRampImagep);
+    gGL.getTexUnit(alpha_ramp)->setTextureAddressMode(LLTexUnit::TAM_CLAMP);
+
+    //
+    // GLTF uniforms
+    //
+
+    LLColor4 base_color_factors[terrain_material_count];
+    F32 metallic_factors[terrain_material_count];
+    F32 roughness_factors[terrain_material_count];
+    LLColor3 emissive_colors[terrain_material_count];
+    F32 minimum_alphas[terrain_material_count];
+    for (U32 i = 0; i < terrain_material_count; ++i)
+    {
+        const LLGLTFMaterial* material = materials[i];
+
+        base_color_factors[i] = material->mBaseColor;
+        metallic_factors[i] = material->mMetallicFactor;
+        roughness_factors[i] = material->mRoughnessFactor;
+        emissive_colors[i] = material->mEmissiveColor;
+        // glTF 2.0 Specification 3.9.4. Alpha Coverage
+        // mAlphaCutoff is only valid for LLGLTFMaterial::ALPHA_MODE_MASK
+        // Use 0 here due to GLTF terrain blending (LLGLTFMaterial::bind uses
+        // -1 for easier debugging)
+        F32 min_alpha = -0.0f;
+        if (material->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 = material->mAlphaCutoff/material->mBaseColor.mV[3];
+        }
+        minimum_alphas[i] = min_alpha;
+    }
+    shader->uniform4fv(LLShaderMgr::TERRAIN_BASE_COLOR_FACTORS, terrain_material_count, (F32*)base_color_factors);
+    if (sPBRDetailMode >= TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS)
+    {
+        shader->uniform4f(LLShaderMgr::TERRAIN_METALLIC_FACTORS, metallic_factors[0], metallic_factors[1], metallic_factors[2], metallic_factors[3]);
+        shader->uniform4f(LLShaderMgr::TERRAIN_ROUGHNESS_FACTORS, roughness_factors[0], roughness_factors[1], roughness_factors[2], roughness_factors[3]);
+    }
+    if (sPBRDetailMode >= TERRAIN_PBR_DETAIL_EMISSIVE)
+    {
+        shader->uniform3fv(LLShaderMgr::TERRAIN_EMISSIVE_COLORS, terrain_material_count, (F32*)emissive_colors);
+    }
+    shader->uniform4f(LLShaderMgr::TERRAIN_MINIMUM_ALPHAS, minimum_alphas[0], minimum_alphas[1], minimum_alphas[2], minimum_alphas[3]);
+
+    // GL_BLEND disabled by default
+    drawLoop();
+
+    // Disable multitexture
+
+    sShader->disableTexture(LLViewerShaderMgr::TERRAIN_ALPHARAMP);
+
+    gGL.getTexUnit(alpha_ramp)->unbind(LLTexUnit::TT_TEXTURE);
+    gGL.getTexUnit(alpha_ramp)->disable();
+    gGL.getTexUnit(alpha_ramp)->activate();
+
+    for (U32 i = 0; i < terrain_material_count; ++i)
+    {
+        sShader->disableTexture(LLViewerShaderMgr::TERRAIN_DETAIL0_BASE_COLOR + i);
+        if (sPBRDetailMode >= TERRAIN_PBR_DETAIL_NORMAL)
+        {
+            sShader->disableTexture(LLViewerShaderMgr::TERRAIN_DETAIL0_NORMAL + i);
+        }
+        if (sPBRDetailMode >= TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS)
+        {
+            sShader->disableTexture(LLViewerShaderMgr::TERRAIN_DETAIL0_METALLIC_ROUGHNESS + i);
+        }
+        if (sPBRDetailMode >= TERRAIN_PBR_DETAIL_EMISSIVE)
+        {
+            sShader->disableTexture(LLViewerShaderMgr::TERRAIN_DETAIL0_EMISSIVE + i);
+        }
+
+        gGL.getTexUnit(detail_basecolor[i])->unbind(LLTexUnit::TT_TEXTURE);
+        gGL.getTexUnit(detail_basecolor[i])->disable();
+        gGL.getTexUnit(detail_basecolor[i])->activate();
+
+        if (sPBRDetailMode >= TERRAIN_PBR_DETAIL_NORMAL)
+        {
+            gGL.getTexUnit(detail_normal[i])->unbind(LLTexUnit::TT_TEXTURE);
+            gGL.getTexUnit(detail_normal[i])->disable();
+            gGL.getTexUnit(detail_normal[i])->activate();
+        }
+
+        if (sPBRDetailMode >= TERRAIN_PBR_DETAIL_METALLIC_ROUGHNESS)
+        {
+            gGL.getTexUnit(detail_metalrough[i])->unbind(LLTexUnit::TT_TEXTURE);
+            gGL.getTexUnit(detail_metalrough[i])->disable();
+            gGL.getTexUnit(detail_metalrough[i])->activate();
+        }
+
+        if (sPBRDetailMode >= TERRAIN_PBR_DETAIL_EMISSIVE)
+        {
+            gGL.getTexUnit(detail_emissive[i])->unbind(LLTexUnit::TT_TEXTURE);
+            gGL.getTexUnit(detail_emissive[i])->disable();
+            gGL.getTexUnit(detail_emissive[i])->activate();
+        }
+    }
+}
+
 void LLDrawPoolTerrain::hilightParcelOwners()
 {
     { //use fullbright shader for highlighting