296 lines
6.5 KiB
C++
296 lines
6.5 KiB
C++
#include<hgl/graph/MaterialRenderList.h>
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#include<hgl/graph/VKRenderable.h>
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#include<hgl/graph/VKDevice.h>
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#include<hgl/graph/VKCommandBuffer.h>
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#include<hgl/graph/VKVertexInput.h>
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#include<hgl/graph/VKRenderAssign.h>
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#include<hgl/util/sort/Sort.h>
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#include"RenderAssignBuffer.h"
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/**
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*
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* 理论上讲，我们需要按以下顺序排序
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*
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* for(material)
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* for(pipeline)
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* for(material_instance)
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* for(vbo)
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*/
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template<>
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int Comparator<hgl::graph::RenderNode>::compare(const hgl::graph::RenderNode &obj_one,const hgl::graph::RenderNode &obj_two) const
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{
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int off;
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hgl::graph::Renderable *ri_one=obj_one.ri;
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hgl::graph::Renderable *ri_two=obj_two.ri;
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//比较管线
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{
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off=ri_one->GetPipeline()
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-ri_two->GetPipeline();
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if(off)
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return off;
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}
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//比较模型
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{
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off=ri_one->GetPrimitive()
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-ri_two->GetPrimitive();
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if(off)
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return off;
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}
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return 0;
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}
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VK_NAMESPACE_BEGIN
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MaterialRenderList::MaterialRenderList(GPUDevice *d,bool l2w,Material *m)
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{
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device=d;
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cmd_buf=nullptr;
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material=m;
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has_l2w=l2w;
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has_mi=material->HasMI();
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if(has_l2w||has_mi)
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assign_buffer=new RenderAssignBuffer(d,has_l2w,material->GetMIDataBytes());
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else
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assign_buffer=nullptr;
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vbo_list=new VBOList(material->GetVertexInput()->GetCount());
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}
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MaterialRenderList::~MaterialRenderList()
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{
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SAFE_CLEAR(vbo_list);
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SAFE_CLEAR(assign_buffer)
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}
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void MaterialRenderList::Add(Renderable *ri,const Matrix4f &mat)
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{
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RenderNode rn;
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rn.local_to_world=mat;
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rn.ri=ri;
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rn_list.Add(rn);
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}
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void MaterialRenderList::End()
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{
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//排序
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Sort(rn_list.GetArray());
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const uint node_count=rn_list.GetCount();
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if(node_count<=0)return;
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Stat();
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if(assign_buffer)
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{
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if(has_mi)
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StatMI();
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//写入LocalToWorld数据
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assign_buffer->WriteNode(rn_list.GetData(),node_count,mi_set);
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}
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}
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void MaterialRenderList::RenderItem::Set(Renderable *ri)
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{
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pipeline =ri->GetPipeline();
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mi =ri->GetMaterialInstance();
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vid =ri->GetVertexInputData();
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}
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void MaterialRenderList::StatMI()
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{
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mi_set.Clear();
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for(RenderNode &rn:rn_list)
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mi_set.Add(rn.ri->GetMaterialInstance());
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if(mi_set.GetCount()>material->GetMIMaxCount())
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{
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//超出最大数量了怎么办？？？
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}
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}
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void MaterialRenderList::Stat()
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{
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const uint count=rn_list.GetCount();
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RenderNode *rn=rn_list.GetData();
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ri_array.Clear();
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ri_array.Alloc(count);
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RenderItem *ri=ri_array.GetData();
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ri_count=1;
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ri->first=0;
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ri->count=1;
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ri->Set(rn->ri);
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last_pipeline =ri->pipeline;
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last_vid =ri->vid;
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++rn;
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for(uint i=1;i<count;i++)
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{
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if(last_pipeline==rn->ri->GetPipeline())
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if(last_vid->Comp(rn->ri->GetVertexInputData()))
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{
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++ri->count;
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++rn;
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continue;
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}
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++ri_count;
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++ri;
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ri->first=i;
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ri->count=1;
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ri->Set(rn->ri);
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last_pipeline =ri->pipeline;
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last_vid =ri->vid;
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++rn;
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}
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}
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bool MaterialRenderList::Bind(const VertexInputData *vid,const uint ri_index)
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{
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//binding号都是在VertexInput::CreateVIL时连续紧密排列生成的，所以bind时first_binding写0就行了。
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//const VIL *vil=last_vil;
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//if(vil->GetCount(VertexInputGroup::Basic)!=vid->binding_count)
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// return(false); //这里基本不太可能，因为CreateRenderable时就会检查值是否一样
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vbo_list->Restart();
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//Basic组，它所有的VBO信息均来自于Primitive，由vid参数传递进来
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{
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vbo_list->Add(vid->buffer_list,vid->buffer_offset,vid->binding_count);
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}
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if(has_l2w)//LocalToWorld组，由RenderList合成
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{
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for(uint i=0;i<4;i++)
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l2w_buffer_size[i]=ri_index*16; //mat4每列都是rgba32f，自然是16字节
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vbo_list->Add(assign_buffer->GetLocalToWorldVBO(),l2w_buffer_size,4);
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}
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if(has_mi) //材质实例组
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vbo_list->Add(assign_buffer->GetMIVBO(),MI_VBO_STRIDE_BYTES*ri_index);
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//if(!vbo_list.IsFull()) //Joint组，暂未支持
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//{
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// const uint joint_id_binding_count=vil->GetCount(VertexInputGroup::JointID);
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// if(joint_id_binding_count>0) //有矩阵信息
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// {
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// count+=joint_id_binding_count;
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// if(count<binding_count) //JointWeight组
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// {
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// const uint joing_weight_binding_count=vil->GetCount(VertexInputGroup::JointWeight);
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// if(joing_weight_binding_count!=1)
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// {
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// ++count;
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// }
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// else //JointWieght不为1是个bug，除非未来支持8权重
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// {
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// return(false);
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// }
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// }
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// else //有JointID没有JointWeight? 这是个BUG
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// {
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// return(false);
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// }
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// }
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//}
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//if(count!=binding_count)
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//{
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// //还有没支持的绑定组？？？？
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// return(false);
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//}
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cmd_buf->BindVBO(vbo_list);
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return(true);
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}
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void MaterialRenderList::Render(RenderItem *ri)
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{
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if(last_pipeline!=ri->pipeline)
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{
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cmd_buf->BindPipeline(ri->pipeline);
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last_pipeline=ri->pipeline;
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last_vid=nullptr;
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//这里未来尝试换pipeline同时不换mi/primitive是否需要重新绑定mi/primitive
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}
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if(!ri->vid->Comp(last_vid))
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{
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Bind(ri->vid,ri->first);
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last_vid=ri->vid;
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}
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const IndexBufferData *ibd=last_vid->index_buffer;
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if(ibd->buffer)
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{
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cmd_buf->BindIBO(ibd);
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cmd_buf->DrawIndexed(ibd->buffer->GetCount(),ri->count);
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}
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else
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{
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cmd_buf->Draw(last_vid->vertex_count,ri->count);
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}
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}
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void MaterialRenderList::Render(RenderCmdBuffer *rcb)
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{
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if(!rcb)return;
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const uint count=rn_list.GetCount();
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if(count<=0)return;
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if(ri_count<=0)return;
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cmd_buf=rcb;
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RenderItem *ri=ri_array.GetData();
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last_pipeline =nullptr;
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last_vid =nullptr;
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if(assign_buffer)
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assign_buffer->Bind(material);
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cmd_buf->BindDescriptorSets(material);
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for(uint i=0;i<ri_count;i++)
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{
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Render(ri);
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++ri;
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}
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}
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VK_NAMESPACE_END
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