400 lines
12 KiB
C++
Executable File
400 lines
12 KiB
C++
Executable File
//
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// KRModel.cpp
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// Kraken Engine
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//
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// Copyright 2025 Kearwood Gilbert. All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other materials
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// provided with the distribution.
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//
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// THIS SOFTWARE IS PROVIDED BY KEARWOOD GILBERT ''AS IS'' AND ANY EXPRESS OR IMPLIED
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// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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// FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL KEARWOOD GILBERT OR
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// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// The views and conclusions contained in the software and documentation are those of the
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// authors and should not be interpreted as representing official policies, either expressed
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// or implied, of Kearwood Gilbert.
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//
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#include "KREngine-common.h"
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#include "KRModel.h"
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#include "KRContext.h"
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#include "resources/mesh/KRMesh.h"
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#include "KRNode.h"
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#include "KRRenderPass.h"
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using namespace hydra;
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/* static */
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void KRModel::InitNodeInfo(KrNodeInfo* nodeInfo)
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{
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KRNode::InitNodeInfo(nodeInfo);
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nodeInfo->model.faces_camera = false;
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nodeInfo->model.light_map_texture = KR_NULL_HANDLE;
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nodeInfo->model.lod_min_coverage = 0.0f;
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for (int lod = 0; lod < kMeshLODCount; lod++) {
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nodeInfo->model.mesh[lod] = KR_NULL_HANDLE;
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}
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nodeInfo->model.receives_shadow = true;
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nodeInfo->model.rim_color = Vector3::Zero();
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nodeInfo->model.rim_power = 0.0f;
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}
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KRModel::KRModel(KRScene& scene, std::string name)
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: KRNode(scene, name)
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, m_min_lod_coverage(0.0f)
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, m_receivesShadow(true)
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, m_faces_camera(false)
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, m_rim_color(Vector3::Zero())
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, m_rim_power(0.0f)
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{
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m_boundsCachedMat.c[0] = -1.0f;
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m_boundsCachedMat.c[1] = -1.0f;
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m_boundsCachedMat.c[2] = -1.0f;
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m_boundsCachedMat.c[3] = -1.0f;
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m_boundsCachedMat.c[4] = -1.0f;
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m_boundsCachedMat.c[5] = -1.0f;
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m_boundsCachedMat.c[6] = -1.0f;
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m_boundsCachedMat.c[7] = -1.0f;
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m_boundsCachedMat.c[8] = -1.0f;
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m_boundsCachedMat.c[9] = -1.0f;
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m_boundsCachedMat.c[10] = -1.0f;
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m_boundsCachedMat.c[11] = -1.0f;
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m_boundsCachedMat.c[12] = -1.0f;
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m_boundsCachedMat.c[13] = -1.0f;
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m_boundsCachedMat.c[14] = -1.0f;
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m_boundsCachedMat.c[15] = -1.0f;
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}
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KRModel::KRModel(KRScene& scene, std::string instance_name, std::string model_name[kMeshLODCount], std::string light_map, float lod_min_coverage, bool receives_shadow, bool faces_camera, Vector3 rim_color, float rim_power)
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: KRNode(scene, instance_name)
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{
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m_lightMap.set(light_map);
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for (int lod = 0; lod < kMeshLODCount; lod++) {
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m_meshes[lod].set(model_name[lod]);
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}
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m_min_lod_coverage = lod_min_coverage;
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m_receivesShadow = receives_shadow;
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m_faces_camera = faces_camera;
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m_rim_color = rim_color;
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m_rim_power = rim_power;
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m_boundsCachedMat.c[0] = -1.0f;
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m_boundsCachedMat.c[1] = -1.0f;
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m_boundsCachedMat.c[2] = -1.0f;
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m_boundsCachedMat.c[3] = -1.0f;
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m_boundsCachedMat.c[4] = -1.0f;
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m_boundsCachedMat.c[5] = -1.0f;
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m_boundsCachedMat.c[6] = -1.0f;
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m_boundsCachedMat.c[7] = -1.0f;
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m_boundsCachedMat.c[8] = -1.0f;
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m_boundsCachedMat.c[9] = -1.0f;
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m_boundsCachedMat.c[10] = -1.0f;
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m_boundsCachedMat.c[11] = -1.0f;
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m_boundsCachedMat.c[12] = -1.0f;
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m_boundsCachedMat.c[13] = -1.0f;
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m_boundsCachedMat.c[14] = -1.0f;
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m_boundsCachedMat.c[15] = -1.0f;
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}
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KRModel::~KRModel()
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{
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}
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KrResult KRModel::update(const KrNodeInfo* nodeInfo)
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{
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KrResult res = KRNode::update(nodeInfo);
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if (res != KR_SUCCESS) {
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return res;
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}
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m_faces_camera = nodeInfo->model.faces_camera;
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m_min_lod_coverage = nodeInfo->model.lod_min_coverage;
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m_receivesShadow = nodeInfo->model.receives_shadow;
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m_rim_color = nodeInfo->model.rim_color;
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m_rim_power = nodeInfo->model.rim_power;
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KRTexture* light_map_texture = nullptr;
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if (nodeInfo->model.light_map_texture != KR_NULL_HANDLE) {
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res = m_pContext->getMappedResource<KRTexture>(nodeInfo->model.light_map_texture, &light_map_texture);
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if (res != KR_SUCCESS) {
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return res;
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}
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}
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m_lightMap.set(light_map_texture);
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for (int lod = 0; lod < kMeshLODCount; lod++) {
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KRMesh* mesh = nullptr;
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if (nodeInfo->model.mesh[lod] != KR_NULL_HANDLE) {
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res = m_pContext->getMappedResource<KRMesh>(nodeInfo->model.mesh[lod], &mesh);
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if (res != KR_SUCCESS) {
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return res;
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}
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}
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m_meshes[lod].set(mesh);
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}
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return KR_SUCCESS;
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}
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std::string KRModel::getElementName()
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{
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return "model";
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}
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tinyxml2::XMLElement* KRModel::saveXML(tinyxml2::XMLNode* parent)
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{
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tinyxml2::XMLElement* e = KRNode::saveXML(parent);
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e->SetAttribute("mesh", m_meshes[0].getName().c_str());
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for (int lod = 1; lod < kMeshLODCount; lod++) {
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char attribName[8];
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snprintf(attribName, 8, "mesh%i", lod);
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e->SetAttribute(attribName, m_meshes[lod].getName().c_str());
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}
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e->SetAttribute("light_map", m_lightMap.getName().c_str());
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e->SetAttribute("lod_min_coverage", m_min_lod_coverage);
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e->SetAttribute("receives_shadow", m_receivesShadow ? "true" : "false");
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e->SetAttribute("faces_camera", m_faces_camera ? "true" : "false");
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kraken::setXMLAttribute("rim_color", e, m_rim_color, Vector3::Zero());
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e->SetAttribute("rim_power", m_rim_power);
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return e;
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}
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void KRModel::setRimColor(const Vector3& rim_color)
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{
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m_rim_color = rim_color;
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}
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void KRModel::setRimPower(float rim_power)
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{
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m_rim_power = rim_power;
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}
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Vector3 KRModel::getRimColor()
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{
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return m_rim_color;
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}
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float KRModel::getRimPower()
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{
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return m_rim_power;
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}
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void KRModel::setLightMap(const std::string& name)
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{
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m_lightMap.set(name);
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}
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std::string KRModel::getLightMap()
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{
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return m_lightMap.getName();
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}
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void KRModel::loadModel()
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{
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bool meshChanged = false;
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for (int lod = 0; lod < kMeshLODCount; lod++) {
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KRMesh* prevMesh = nullptr;
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prevMesh = m_meshes[lod].get();
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m_meshes[lod].bind(&getContext());
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if (m_meshes[lod].get() != prevMesh) {
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meshChanged = true;
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}
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if (m_meshes[lod].isBound()) {
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KRMesh* model = m_meshes[lod].get();
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std::vector<KRBone*> model_bones;
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int bone_count = model->getBoneCount();
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bool all_bones_found = true;
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for (int bone_index = 0; bone_index < bone_count; bone_index++) {
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KRBone* matching_bone = dynamic_cast<KRBone*>(getScene().getRootNode()->find<KRNode>(model->getBoneName(bone_index)));
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if (matching_bone) {
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model_bones.push_back(matching_bone);
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} else {
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all_bones_found = false; // Reject when there are any missing bones or multiple matches
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}
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}
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if (all_bones_found) {
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if (m_bones[lod] != model_bones) {
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m_bones[lod] = model_bones;
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meshChanged = true;
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}
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} else {
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if (!m_bones[lod].empty()) {
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m_bones[lod].clear();
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meshChanged = true;
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}
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}
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} else {
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if (!m_bones[lod].empty()) {
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m_bones[lod].clear();
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meshChanged = true;
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}
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}
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}
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if (meshChanged) {
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getScene().notify_sceneGraphModify(this);
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invalidateBounds();
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}
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}
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void KRModel::render(KRNode::RenderInfo& ri)
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{
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KRNode::render(ri);
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// Don't render meshes on second pass of the deferred lighting renderer, as only lights will be applied
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if (ri.renderPass->getType() != RenderPassType::RENDER_PASS_DEFERRED_LIGHTS
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&& ri.renderPass->getType() != RenderPassType::RENDER_PASS_ADDITIVE_PARTICLES
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&& ri.renderPass->getType() != RenderPassType::RENDER_PASS_PARTICLE_OCCLUSION
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&& ri.renderPass->getType()!= RenderPassType::RENDER_PASS_VOLUMETRIC_EFFECTS_ADDITIVE
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&& ri.renderPass->getType() != RenderPassType::RENDER_PASS_SHADOWMAP) {
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/*
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float lod_coverage = 0.0f;
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if(m_models.size() > 1) {
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lod_coverage = viewport.coverage(getBounds()); // This also checks the view frustrum culling
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} else if(viewport.visible(getBounds())) {
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lod_coverage = 1.0f;
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}
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*/
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float lod_coverage = ri.viewport->coverage(getBounds()); // This also checks the view frustrum culling
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if (lod_coverage > m_min_lod_coverage) {
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// ---===--- Select the best LOD model based on screen coverage ---===---
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int bestLOD = -1;
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KRMesh* pModel = nullptr;
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for (int lod = 0; lod < kMeshLODCount; lod++) {
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if (m_meshes[lod].isBound()) {
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KRMesh* pLODModel = m_meshes[lod].get();
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if ((float)pLODModel->getLODCoverage() / 100.0f > lod_coverage) {
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if(bestLOD == -1 || pLODModel->getLODCoverage() < pModel->getLODCoverage()) {
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pModel = pLODModel;
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bestLOD = lod;
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continue;
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}
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}
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}
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}
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if (m_lightMap.isBound() && ri.camera->settings.bEnableLightMap && ri.renderPass->getType() != RENDER_PASS_SHADOWMAP && ri.renderPass->getType() != RENDER_PASS_SHADOWMAP) {
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m_lightMap.get()->requestResidency(lod_coverage, KRTexture::TEXTURE_USAGE_LIGHT_MAP);
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// TODO - Vulkan refactoring. We need to bind the shadow map in KRMesh::Render
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// m_pContext->getTextureManager()->selectTexture(5, m_pLightMap, lod_coverage, KRTexture::TEXTURE_USAGE_LIGHT_MAP);
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}
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if (pModel) {
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Matrix4 matModel = getModelMatrix();
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if (m_faces_camera) {
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Vector3 model_center = Matrix4::Dot(matModel, Vector3::Zero());
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Vector3 camera_pos = ri.viewport->getCameraPosition();
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matModel = Quaternion::Create(Vector3::Forward(), Vector3::Normalize(camera_pos - model_center)).rotationMatrix() * matModel;
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}
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pModel->render(ri, getName(), matModel, m_lightMap.get(), m_bones[bestLOD], lod_coverage);
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}
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}
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}
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}
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void KRModel::preStream(const KRViewport& viewport)
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{
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KRNode::preStream(viewport);
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loadModel();
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float lod_coverage = viewport.coverage(getBounds());
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for (int i = 0; i < kMeshLODCount; i++) {
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if (m_meshes[i].isBound()) {
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m_meshes[i].get()->preStream(lod_coverage);
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}
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}
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m_lightMap.bind(&getContext());
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if (m_lightMap.isBound()) {
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m_lightMap.get()->requestResidency(lod_coverage, KRTexture::TEXTURE_USAGE_LIGHT_MAP);
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}
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}
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kraken_stream_level KRModel::getStreamLevel(const KRViewport& viewport)
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{
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kraken_stream_level stream_level = KRNode::getStreamLevel(viewport);
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loadModel();
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for (int lod = 0; lod < kMeshLODCount; lod++) {
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if (m_meshes[lod].isBound()) {
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stream_level = KRMIN(stream_level, m_meshes[lod].get()->getStreamLevel());
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}
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}
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return stream_level;
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}
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AABB KRModel::getBounds()
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{
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loadModel();
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// Get the bounds of the lowest lod mesh
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for(int lod=0; lod<kMeshLODCount; lod++) {
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if (!m_meshes[lod].isBound()) {
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continue;
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}
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KRMesh* mesh = m_meshes[lod].get();
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if (m_faces_camera) {
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AABB normal_bounds = AABB::Create(mesh->getMinPoint(), mesh->getMaxPoint(), getModelMatrix());
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float max_dimension = normal_bounds.longest_radius();
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return AABB::Create(normal_bounds.center() - Vector3::Create(max_dimension), normal_bounds.center() + Vector3::Create(max_dimension));
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} else {
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if (!(m_boundsCachedMat == getModelMatrix())) {
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m_boundsCachedMat = getModelMatrix();
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m_boundsCached = AABB::Create(mesh->getMinPoint(), mesh->getMaxPoint(), getModelMatrix());
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}
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return m_boundsCached;
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}
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}
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// No models loaded
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return AABB::Infinite();
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}
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bool KRModel::getShaderValue(ShaderValue value, hydra::Vector3* output) const
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{
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switch (value) {
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case ShaderValue::rim_color:
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*output = m_rim_color;
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return true;
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}
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return KRNode::getShaderValue(value, output);
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}
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bool KRModel::getShaderValue(ShaderValue value, float* output) const
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{
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switch (value) {
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case ShaderValue::rim_power:
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*output = m_rim_power;
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return true;
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}
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return KRNode::getShaderValue(value, output);
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}
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