CN111866065A - Rendering image returning method and device - Google Patents
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Abstract
The disclosure provides a method and a device for returning a rendered image, relates to the field of image processing, and can solve the problem of high data transmission overhead in the process of returning a remotely rendered image. The method for returning the rendered image comprises the following steps: the application end sends a rendering instruction to the rendering end; the application end sends a data processing request to the rendering end when the rendering result needs to be processed; and receiving rendering result data returned by the rendering end according to the data processing request. By the technical scheme provided by the embodiment of the invention, the application end can inform the rendering end of returning and processing the rendering result data in a targeted manner through the data processing request, so that the overhead of data transmission between the application end and the rendering end is reduced.
Description
Technical Field
The present disclosure relates to the field of image processing, and in particular, to a method and an apparatus for returning a rendered image.
Background
Rendering refers to utilizing a computer image generation technology, attaching certain material, texture, color and other computational graphic elements to a geometric model of a digitalized object in a computer, and computing and generating a scene image with a realistic object state under a certain light source setting condition. In a remote rendering scene, an application end and a rendering end are separated, and the rendering requirement of the application end can be completed by one or more computers of the rendering end together; the rendering requirement can also be sent to a remote server for rendering, the server executes a corresponding rendering task according to the rendering instruction and returns the rendering result to the application end, and the remote rendering mode is also called cloud rendering.
In the process of remote rendering, the application end is often involved to process a large number of intermediate rendering results, in the related technology, when the application end needs to process the intermediate rendering results, an operation request is directly sent to the rendering end, the rendering end directly sends the intermediate rendering results back to the application end, and the application end sends the intermediate rendering results back to the rendering end for further rendering operation after finishing the processing; this processing method causes the overhead of data transmission between the application end and the rendering end to be large, and thus requires a large bandwidth.
Disclosure of Invention
The embodiment of the disclosure provides a method and a device for returning a rendered image, which can solve the problem of high overhead of data transmission between an application end and a rendering end in the related art.
According to a first aspect of the embodiments of the present disclosure, there is provided a method for rendering an image backhaul, which may be applied to an application side, the method including: the application end sends a rendering instruction to the rendering end; the application end sends a data processing request to the rendering end when the rendering result needs to be processed; and receiving rendering result data returned by the rendering end according to the data processing request. By implementing the method, the application end can inform the rendering end of returning and processing the rendering result data in a targeted manner through the data processing request, and the overhead of data transmission between the application end and the rendering end is reduced.
In some embodiments, when the application end needs to perform rendering result processing, sending a data processing request to the rendering end may include: the application program of the application terminal generates an operation request and sends the operation request to the detection module of the rendering terminal; and the detection module judges the operation type of the operation request and sends the data processing request to the rendering end according to the operation type.
In some embodiments, the operation request may be a read-write request, and the operation category may be a read operation and/or a write operation (also referred to as a read-write operation).
In some embodiments, the data processing request comprises: requesting the rendering end to transmit rendering result data with a specified size at a specified position; or requesting the rendering end to update the rendering result data of the specified content to the specified position.
By the rendering image return method, the application end can send different data processing requests according to different operation types, so that the requirement of the application end on intermediate rendering result processing is met, the rendering end can perform different rendering result data processing according to different data processing requests, and the problems that the rendering end needs to directly return all rendering results in the related art and the data transmission cost is high are solved.
According to a second aspect of the embodiments of the present disclosure, there is provided another backhaul method for rendering an image, which can be applied to a rendering end, the method including: the rendering end receives a rendering instruction sent by the application end and carries out image rendering according to the rendering instruction; and the rendering end receives the data processing request sent by the application end and performs rendering result data processing according to the data processing request. Through the implementation of the technical scheme, the rendering end can perform targeted rendering result data processing aiming at the data processing request sent by the application end, and does not need to directly return complete intermediate rendering result data, so that the data transmission overhead is reduced.
In some embodiments, the rendering end performing rendering result data processing according to the data processing request includes: returning rendering result data with a specified size at a specified position to the application terminal according to the data processing request; or updating the rendering result data of the specified content to the specified position according to the data processing request.
By the rendered image return method provided by the embodiment, the rendering end can pointedly return rendering result data with a specified size at a specified position to the application end aiming at the data processing request sent by the application end; or updating the rendering result data of the specified content to the specified position according to the data processing request. The complete intermediate rendering result data does not need to be directly returned, and the data transmission overhead can be greatly reduced.
According to a third aspect of the embodiments of the present disclosure, there is provided an apparatus for returning a rendered image, which is applied to an application end, the apparatus includes an application program module and a detection module, the application program module is configured to send a rendering instruction to the rendering end, and the detection module is configured to send a data processing request to the rendering end when a rendering result needs to be processed; the detection module is further configured to receive rendering result data returned by the rendering end according to the data processing request. By the device, the application end can inform the rendering end of returning and processing the rendering result data in a targeted manner through the data processing request, and the problem of high data transmission overhead of the application end and the rendering end is solved.
In some embodiments, the application module may be further operable to generate and send an operation request to the detection module; the detection module may be further configured to determine an operation type of the operation request, and send the data processing request to the rendering end according to the operation type.
In some embodiments, the operation request may be a read-write request, and the operation type may be a read operation and/or a write operation.
In some embodiments, the data processing request may include: requesting the rendering end to transmit rendering result data with a specified size back at a specified position, or requesting the rendering end to update the rendering result data with specified content to the specified position.
By the rendering image return device, the application end can send different data processing requests according to different operation types, the requirement of the application end on intermediate rendering result processing is met, the rendering end can perform different rendering result data processing according to different data processing requests, and the problems that in the related technology, the rendering end needs to directly return all rendering results, and the data transmission cost is high are solved.
According to a fourth aspect of the embodiments of the present disclosure, there is provided another backhaul apparatus for rendering an image, which is applied to a rendering end, and the apparatus includes a receiving module and an executing module; the receiving module is used for receiving a rendering instruction sent by an application end, the executing module is used for rendering images according to the rendering instruction, and the receiving module is also used for receiving a data processing request sent by the sending module; and the execution module is also used for processing rendering result data according to the data processing request. By the device, the rendering end can perform targeted rendering result data processing aiming at the data processing request sent by the application end, complete intermediate rendering result data do not need to be directly returned, and data transmission overhead is reduced.
In some embodiments, the performing, by the execution module, rendering result data processing according to the data processing request includes: returning rendering result data with a specified size at a specified position to the application terminal according to the data processing request; or updating the rendering result data of the specified content to the specified position according to the data processing request.
By the rendering image return device provided by the embodiment, the rendering end can pointedly return rendering result data with a specified size at a specified position to the application end aiming at the data processing request sent by the application end; or updating the rendering result data of the specified content to the specified position according to the data processing request. The complete intermediate rendering result data does not need to be directly returned, and the data transmission overhead can be greatly reduced.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
FIG. 1 is a schematic diagram of a remote rendering system;
FIG. 2 is a flowchart of a rendering image return method according to an embodiment of the present disclosure;
FIG. 3 is a flowchart of another rendering image returning method provided by the embodiment of the present disclosure;
FIG. 4 is a flowchart of another rendering image returning method provided by the embodiment of the present disclosure;
fig. 5 is a schematic diagram of a process of reading and writing operations of an application terminal according to an embodiment of the present disclosure;
fig. 6 is a block diagram illustrating a structure of a rendered image passing-back device according to an embodiment of the present disclosure;
fig. 7 is a block diagram of another rendered image returning device according to an embodiment of the present disclosure.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
FIG. 1 is a schematic diagram of a remote rendering system. As shown in fig. 1, in the remote rendering system, an application end 101 and a rendering end 102 are provided, where the application end 101 may also be called a user end, and may be a user computer, a mobile phone terminal, a tablet computer, or the like; an image rendering application, such as a 3D application, may be installed in the application 101. The rendering end 102 may be one or more computers or servers deployed in a local area network, or may be one or more computers or servers in a cloud (a plurality of them are not shown in the figure). The rendering system has the following rendering realization principle: the application terminal 101 sends an image rendering instruction generated by a local 3D application program to the rendering terminal 102; the rendering end 102 executes the corresponding image rendering instruction to perform image rendering, and after the image rendering is completed, returns the rendering result to the application end 101. In some embodiments, the rendering includes 3D rendering, the application side also referred to as the 3D application side, and the rendering side also referred to as the 3D rendering side.
In the related art, in a scene where the application end 101 needs to process the intermediate rendering result, the operation request is directly sent to the rendering end 102, the rendering end 102 directly sends the intermediate rendering result to the application end 101 after receiving the operation request of the application end, and the application end 101 sends the intermediate rendering result to the rendering end 102 after completing the processing. By the processing mode, the overhead of data transmission between the application end and the rendering end is large, and a large bandwidth is needed.
Through research and analysis, rendering results or intermediate rendering results obtained by rendering the rendering end 102 by the application end 101 generally have the following operations:
operation 1: saving, namely saving all or part of data of the rendering result;
operation 2: modifying, namely calculating all or part of rendering results;
operation 3: and replacing, namely covering all or part of the content of the rendering result.
In the three operations, operation 1 and operation 2 need to read the actual content of the rendering result and return image data, but if partial storage or modification is performed, all data does not need to be returned, and only partial data needs to be returned; the purpose of operation 3 is only to cover, and the application end does not need to know what the rendering result is, so the rendering result returned for operation 3 can be omitted.
Fig. 2 is a flowchart of a rendering image returning method according to an embodiment of the present disclosure. As shown in fig. 2, the method comprises the steps of:
201: the application end sends a rendering instruction to the rendering end;
202: the method comprises the steps that an application end sends a data processing request to a rendering end when rendering result processing is needed;
203: and receiving rendering result data returned by the rendering end according to the data processing request.
By implementing the method, the application end can inform the rendering end of returning and processing the rendering result data in a targeted manner through the data processing request, and the problem of high data transmission overhead between the application end and the rendering end is solved.
In some embodiments, the sending a data processing request to the rendering end when the application end needs to perform rendering result processing in step 202 may include: the application program of the application terminal generates an operation request and sends the operation request to the detection module of the rendering terminal; and the detection module judges the operation type of the operation request and sends the data processing request to the rendering end according to the operation type.
In some embodiments, the data processing request may include: requesting the rendering end to transmit rendering result data with a specified size at a specified position; or requesting the rendering end to update the rendering result data of the specified content to the specified position.
By the rendering image return method, the application end can send different data processing requests according to different operation types, so that the requirement of the application end on intermediate rendering result processing is met, the rendering end can perform different rendering result data processing according to different data processing requests, and the problems that the rendering end needs to directly return all rendering results in the related art and the data transmission cost is high are solved.
Fig. 3 is a flowchart of another rendered image return method according to an embodiment of the present disclosure. As shown in fig. 3, the method comprises the steps of:
301: the rendering end receives a rendering instruction sent by the application end and carries out image rendering according to the rendering instruction;
302: the rendering end receives a data processing request sent by the application end;
303: and the rendering end performs rendering result data processing according to the data processing request.
By implementing the method, the rendering end can perform rendering result data processing in a targeted manner according to the data processing request sent by the application end, and does not need to directly return complete intermediate rendering result data, so that the data transmission overhead is reduced.
In some embodiments, the rendering end performing rendering result data processing according to the data processing request in step 303 may include: returning rendering result data with a specified size at a specified position to the application terminal according to the data processing request; or updating the rendering result data of the specified content to the specified position according to the data processing request.
In some embodiments, through implementation of the rendering image return method, the rendering end can pointedly return rendering result data of a specified size at a specified position to the application end according to a data processing request sent by the application end; or updating the rendering result data of the specified content to the specified position according to the data processing request. The complete intermediate rendering result data does not need to be directly returned, and the data transmission overhead can be greatly reduced.
Based on the rendering image return method provided by the embodiments corresponding to fig. 2 and fig. 3, another embodiment of the present disclosure provides a rendering image return method, which may be applied to a remote image rendering system. Fig. 4 is a flowchart of another rendered image return method according to an embodiment of the present disclosure. As shown in fig. 4, the image rendering processing method includes the following steps:
401: the application end sends an image rendering instruction to the rendering end through the 3D application program;
402: the rendering end receives the image rendering instruction and performs image rendering; in some embodiments, the rendering result at the rendering end may be stored in a memory of an image Processing Unit (GPU).
403: when the application end needs to process the intermediate rendering result, the 3D application program of the application end generates an operation request and sends the operation request to the detection module of the application end;
404: after receiving the operation request, the application terminal detection module judges the operation type of the operation request;
405: the application terminal detection module determines a data processing request according to the judgment result and sends the data processing request to the rendering terminal;
405: and the rendering end carries out corresponding processing according to the received data processing request.
In some embodiments, the operation type of the operation request may be a read operation and/or a write operation, or may be simply referred to as a read-write operation; the detection module may be a read-write detection module.
In some embodiments, if the detection module determines that the operation type of the operation request is a read operation in step 404, the detection module obtains a read position and a read size, and the data processing request sent to the rendering end is: and requesting the rendering end to return data with corresponding size at the corresponding position. In particular implementations, the data processing request may include location information and data size information. And after receiving the data processing request, the rendering end transmits the data with the corresponding size at the corresponding position back to the application end.
In some embodiments, if the operation type of the operation request is determined as a write operation by the detection module in step 404, the detection module obtains a write location and a write content, and the data processing requirement sent to the rendering is: and requesting the rendering end to update the corresponding content to the corresponding position. In particular implementations, the data processing request may include location information and content information. And after receiving the data processing request, the rendering end updates the corresponding content to the corresponding position.
In some embodiments, the method further includes the step that the application terminal performs processing of the intermediate rendering result according to the returned data of the rendering terminal.
Fig. 5 is a schematic diagram of an application read-write operation process provided in the embodiment of the present disclosure. As shown in fig. 5, in some embodiments, the read/write operation process may be divided into the following steps:
501: sending a mapping request; the method comprises the steps of requesting to map a memory of a GPU to a CPU end, and enabling 3D application to access;
502: performing read-write operation; in some embodiments, the read-write operation may be implemented by using a read-write function specific to a 3D Application Programming Interface (API for short), or may be implemented by using a general memory read-write operation;
503: the mapping is cancelled; unmapping also means that the access is complete and the relevant modifications are submitted to the GPU.
According to the above steps of the read-write operation process, the detection module can use the support of the operating system or the support of the processor memory management unit to determine the operation type of the operation request and determine the data processing request sent to the rendering end. In the following, a possible implementation is exemplarily described by taking the support of the operating system to determine the operation type of the operation request:
in step 501, when a 3D application program at an application end sends a mapping request, the application end may request an operating system to map a memory space, the size is the size for accessing GPU resources, the mapped memory has no read-write permission, and the memory address mapped by the segment is returned to the 3D application.
In step 502, when the 3D application program at the application end performs actual read/write operations, since the returned mapping address does not set a read/write permission, an exception is triggered when the application program is read or written.
In the memory exception handling program, according to the address generated by the exception, compared with the address returned before, the access position can be obtained, and according to the reason of the exception, the detection module can judge whether the access is read access or write access. In some embodiments, some operating system platforms do not provide information about the cause of the exception, and the detection module needs to use stack trace-back at this time to analyze the CPU instruction executed when the exception occurs, and determine whether to perform read access or write access according to the instruction type. The detection module can obtain the read-write data size through a read-write function special for the 3D API, and can obtain the read-write data size through a parameter called by a stack backtracking analysis function in a general memory read-write mode.
In step 503, when the mapping is canceled, for the write operation, the position and size of the write and the content information obtained in the above steps can be sent to the rendering end.
Through the above manner, on one hand, for the write operation, unnecessary data transmission in the write operation can be avoided, and the content of the write operation is directly updated to the corresponding position in the rendering result of the 3D rendering end; on the other hand, the rendering result of the whole frame does not need to be returned for each read operation, but the data on the storage position to be read is directly returned.
Fig. 6 is a block diagram of a rendered image returning device according to an embodiment of the present invention. The device can be applied to an application end. As shown in fig. 6, the apparatus 600 for rendering an image return includes an application module 601 and a detection module 602. The application module 601 is configured to send a rendering instruction to a rendering end, and the detection module 602 is configured to send a data processing request to the rendering end when a rendering result needs to be processed. In some embodiments, the detection module 601 is further configured to receive rendering result data returned by the rendering end according to the data processing request.
By the device, the application end can inform the rendering end of returning and processing the rendering result data in a targeted manner through the data processing request, in some embodiments, the detection module 601 can be used for judging the use situation of the rendering result by the operation request, determining whether the rendering end needs to return the actual image data according to the use situation, and judging the amount of returned image data when the data needs to be returned, so that unnecessary returning of the image data can be reduced, the processing efficiency is improved, and the transmission overhead is reduced.
In some embodiments, the application module 601 may also be used to generate and send operation requests to the detection module 602; the detection module 601 may further be configured to determine an operation type of the operation request, and send the data processing request to the rendering end according to the operation type.
In some embodiments, the operation request may be a read-write request, and the operation type may be a read operation and/or a write operation. In some embodiments, the data processing request may include: requesting the rendering end to transmit rendering result data with a specified size back at a specified position, or requesting the rendering end to update the rendering result data with specified content to the specified position.
The application end sends different data processing requests according to different operation types, so that the requirement of the application end on processing of the intermediate rendering result is met, the rendering end can perform different data processing on the rendering result according to different data processing requests, and the problems that the rendering end needs to directly return all the rendering results and the data transmission cost is high in the related technology are solved.
Fig. 7 is a block diagram of another rendered image returning apparatus according to an embodiment of the present invention. The device can be applied to a rendering end. As shown in fig. 7, the apparatus 700 for rendering an image return includes a receiving module 701 and an executing module 702; the receiving module 701 is configured to receive a rendering instruction sent by an application end, and the executing module 702 is configured to perform image rendering according to the rendering instruction. In some embodiments, the receiving module 701 is further configured to receive a data processing request sent by the sending module; the execution module 702 is further configured to perform rendering result data processing according to the data processing request. By the device, the rendering end can perform targeted rendering result data processing aiming at the data processing request sent by the application end, complete intermediate rendering result data do not need to be directly returned, and data transmission overhead is reduced.
In some embodiments, the performing, by the execution module 702, rendering result data processing according to the data processing request includes: returning rendering result data with a specified size at a specified position to the application terminal according to the data processing request; or updating the rendering result data of the specified content to the specified position according to the data processing request.
By the rendering image return device provided by the embodiment, the rendering end can pointedly return rendering result data with a specified size at a specified position to the application end aiming at the data processing request sent by the application end; or updating the rendering result data of the specified content to the specified position according to the data processing request. The complete intermediate rendering result data does not need to be directly returned, and the data transmission overhead can be greatly reduced.
Based on the rendering image returning method described in the embodiment corresponding to fig. 2 and fig. 3, the embodiment of the present disclosure further provides a computer-readable storage medium, for example, the non-transitory computer-readable storage medium may be a Read Only Memory (ROM), a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like. The storage medium stores computer instructions for executing the data transmission method described in the embodiment corresponding to fig. 2 and fig. 3, which is not described herein again.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (10)
1. A method of rendering an image passback, the method comprising: the application end sends a rendering instruction to the rendering end; the application end sends a data processing request to the rendering end when the rendering result needs to be processed; and receiving rendering result data returned by the rendering end according to the data processing request.
2. The method according to claim 1, wherein the sending a data processing request to the rendering end when the application end needs to process the rendering result comprises:
The application program of the application terminal generates an operation request and sends the operation request to the detection module of the rendering terminal;
and the detection module judges the operation type of the operation request and sends the data processing request to the rendering end according to the operation type.
3. The method according to claim 1 or 2, wherein the data processing request comprises: requesting the rendering end to transmit rendering result data with a specified size at a specified position; or requesting the rendering end to update the rendering result data of the specified content to the specified position.
4. A method of rendering an image passback, the method comprising: the rendering end receives a rendering instruction sent by the application end and carries out image rendering according to the rendering instruction; and the rendering end receives the data processing request sent by the application end and performs rendering result data processing according to the data processing request.
5. The method according to claim 4, wherein the rendering end performs rendering result data processing according to the data processing request, including: returning rendering result data with a specified size at a specified position to the application terminal according to the data processing request; or updating the rendering result data of the specified content to the specified position according to the data processing request.
6. The device for returning the rendered image is applied to an application end and is characterized by comprising an application program module and a detection module, wherein the application program module is used for sending a rendering instruction to the rendering end, and the detection module is used for sending a data processing request to the rendering end when a rendering result needs to be processed; the detection module is further configured to receive rendering result data returned by the rendering end according to the data processing request.
7. The apparatus of claim 6, wherein the application module is further configured to generate and send an operation request to the detection module; the detection module is further configured to determine an operation type of the operation request, and send the data processing request to the rendering end according to the operation type.
8. The apparatus of claim 6 or 7, wherein the data processing request comprises: requesting the rendering end to transmit rendering result data with a specified size back at a specified position, or requesting the rendering end to update the rendering result data with specified content to the specified position.
9. The device for returning the rendered image is applied to a rendering end and is characterized by comprising a receiving module and an executing module; the receiving module is used for receiving a rendering instruction sent by an application end, the executing module is used for rendering images according to the rendering instruction, and the receiving module is also used for receiving a data processing request sent by the sending module; and the execution module is also used for processing rendering result data according to the data processing request.
10. The apparatus of claim 9, wherein the execution module performing rendering result data processing according to the data processing request comprises: returning rendering result data with a specified size at a specified position to the application terminal according to the data processing request; or updating the rendering result data of the specified content to the specified position according to the data processing request.
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| CN114077508A (en) * | 2022-01-19 | 2022-02-22 | 维塔科技(北京)有限公司 | Remote image rendering method and device, electronic equipment and medium |
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| CN110580674A (en) * | 2019-07-24 | 2019-12-17 | 西安万像电子科技有限公司 | Information processing method, device and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114077508A (en) * | 2022-01-19 | 2022-02-22 | 维塔科技(北京)有限公司 | Remote image rendering method and device, electronic equipment and medium |
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