I recently in learning, its in the drawing of the cube program joined assimp read obj model based on function (read a model of a human body), but when according to the problem of the display is not all,
By drawing the model using the Windows built-in viewer open effect as shown in figure
Directly call Drawindexed function can only draw the part of the lower body and head, torso part among painting not to come out,
Reference code:
D3dContext_ - & gt; DrawIndexed (numOfPs, 0, 0);
Mapping results:
Cycle if the draw, and each draw a number of vertices (multiple of 3), you can display completely (integrity associated with each draw points, the less overall were drawn each point is more complete, but sometimes it does not necessarily)
Reference code:
int i=0;
Int DPTime=156;
While (I & lt; NumOfPs) {
If (I + DPTime & lt; NumOfPs) {
D3dContext_ - & gt; DrawIndexed (DPTime, 0, I);
I=I + DPTime;
}
The else {
D3dContext_ - & gt; DrawIndexed (numOfPs - I, zero, I);
I=I + DPTime;
}
}
Mapping results:
The same code reading other obj files also appears the same problem, map without careful processing, parts with a corresponding unity, not good-looking but should not affect the model shows that the complete, inquire of exactly what went wrong,
Program using ASDWQEJK keys can move the camera and rotating object
Vs complete engineering on baidu network backup
https://pan.baidu.com/s/1Ixl96ZN1VNgjFg1-Uaqt9w
CodePudding user response:
Have you set up the index?
CodePudding user response:
The Index also read from the obj file, the same data map can draw completely I points a few times, I don't think the Index itself should be read wrong
CodePudding user response:
refer to the second floor Etiennely response: Index is read from the obj file, the same data map can draw completely I points a few times, I don't think the Index itself should be misread CodePudding user response:
reference WJN92 reply: 3/f Quote: refer to the second floor Etiennely response: CodePudding user response:
What is numOfPs? CodePudding user response:
Quote: refer to the fifth floor P_hantom reply: CodePudding user response:
NumOfPs is the sum of all the submesh is a submesh CodePudding user response:
Dx12 can use PIX debugging, you can see this problem a debugging problems, but its don't know can't debugging CodePudding user response:
View this thread is heavy, the latest progress to me that make a reference to the future generations, the problem currently have a temporary solution, after tests found that the problem seems to be out in the D3DCONTEXT DrawIndexed function, a began to use this function to map model according to the index, but the later found ASSIMP when read the model to the model's structure has carried on the reorganization, all vertices according to the drawing order arrangement of the road to a (for example, if we have four vertices V1, V2, V3 and V4, and then I want in the order 123234 to draw two triangles, normally we will store four points in the vertex, and then save 1,2,3,2,3,4 as index in the index, with ASSIMP after read, becomes in the vertex directly in order to store the V1, V2, V3, V2, V3 and V4 six points, then the index change to 6) therefore under this structure using DrawIndexed and the draw had no difference, so I change the drawing function, the result is can draw out, also won't complain, but as to why DrawIndexed will go wrong, I didn't find out why, CodePudding user response:
In 3 ds Max SDK has a very good sample, as long as a slight modification can make their own export plug-in, CodePudding user response:
I also think you had better use PIX debugged, look at each DrawCall parameters, and draw out what, this is bad to get light CodePudding user response:
Thank P_hantom WJN92 and enthusiastic help, at present has found a solution more damage of the mistakes after screening suspected drawindexed functions to draw a not too big all points within the vertex Buffer (although the feeling is unlikely, a tens of thousands of points should not draw not to come out but not found other wrong, think so can only temporarily, welcome to point out mistakes), Obj model is mesh is the module to store (such as a leg is a, both hands is a, is a body), tried to read before stage record each mesh corresponding index index range and then in the rendering phase points mesh multiple calls drawindexed draw results failed, then see such a blog https://blog.csdn.net/X_Jun96/article/details/82633363#ObjReaderobjmbo_157 
