CN104331297A - Drawing method and drawing device for render engine - Google Patents
Drawing method and drawing device for render engine Download PDFInfo
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- CN104331297A CN104331297A CN201410715317.3A CN201410715317A CN104331297A CN 104331297 A CN104331297 A CN 104331297A CN 201410715317 A CN201410715317 A CN 201410715317A CN 104331297 A CN104331297 A CN 104331297A
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Abstract
The embodiment of the invention discloses a drawing method and a drawing device for a render engine, solving the technical problem that due to limit of an operating system, the display effect is severely affected by using the technique of showing white filling when a host program directly draws on the window by using OpenGL as the render engine. The method disclosed by the embodiment comprises the following steps: establishing a sub-window based on a main window; drawing an image by using OpenGL and importing drawing data into a buffer region of the sub-window; copying the drawing data to a storage region of a COM assembly and generating an image corresponding to the drawing data; and displaying the image in the main window.
Description
Technical field
The present invention relates to the technical field of computing machine com component, particularly relate to a kind of method for drafting of render engine.
Background technology
In the software development of Windows system, com component technology applies very general and important technology.It is com component code wrap identical for function, use the program of different programming language exploitation just can realize certain function by calling this assembly very easily like this, and this class method is exactly the host program of this com component.The interface of com component interior liabilities Presentation Function is exactly so-called render engine, is generally divided into such as GDI, GDI+ and DX etc. that Microsoft is, but not the mainly OpenGL render engine of system of Microsoft.Owing to respectively having advantage, the use of GDI, GDI+ is simple, but efficiency is not high, the standard of DX then owing to being Microsoft, the disclosed interface of many video card manufacturers exploitation often only has OpenGL version, OpenGL then efficiency is high, can apply the new features of video card, but its using method is relatively loaded down with trivial details, therefore in order to meet different requirements, increasing assembly provides above-mentioned two kinds of render engines, plays up mode for host program choice for use.
Host program uses the com component a kind of conventional method carrying out playing up to be the self-defined drafting function of host program, and such as host program is by the windowed configuration rendering objects of com component, and graphing image on the object.Tradition developer component method be a unique window of building component, so component internal need draw graph image be all be plotted on this window.Due to the restriction of operating system, especially using OpenGL as render engine, when host program directly draws the filling that there will be white on this window, such as need to draw a rectangle on com component window, the rectangular area of of finally presenting band white-based color.
But the above-mentioned restriction due to operating system mentioned, uses OpenGL as render engine, when host program directly draws the technology of the filling that there will be white on this window, result in the technical matters that display effect is subject to comparatively serious impact.
Summary of the invention
Embodiments provide a kind of method for drafting and device of render engine, solve the restriction due to operating system, use OpenGL as render engine, when host program directly draws the technology of the filling that there will be white on this window, result in the technical matters that display effect is subject to comparatively serious impact.
The method for drafting of a kind of render engine that the embodiment of the present invention provides, comprising:
Create the subwindow based on main window;
By using OpenGL to carry out Image Rendering, and drawing data is imported the buffer zone of described subwindow;
Described drawing data is copied to the memory block of com component, and generates the image corresponding with described drawing data;
Described image is shown in described main window.
Preferably,
The subwindow created based on main window specifically comprises:
The render engine that host program adopts is judged, if non-described OpenGL, then described main window is set to unique drafting carrier, if described OpenGL, then create the described subwindow based on described main window.
Preferably,
Also comprise before judging the render engine that host program adopts:
Com component provides described host program to arrange the interface of described render engine, makes described host program independently arrange described render engine.
Preferably,
Also comprise before carrying out Image Rendering by use OpenGL:
Carry out initialization to described OpenGL, the pixel format that described initialization comprises described subwindow is arranged.
Preferably,
Described image is carried out showing in described main window specifically comprise:
By the described render engine of non-described OpenGL, described image is shown in described main window.
Preferably,
Also comprise after described image is shown in described main window:
Described host program carries out self-defined drafting according to described image.
The drawing apparatus of a kind of render engine that the embodiment of the present invention provides, comprising:
Creation module, for creating the subwindow based on main window;
Subwindow drafting module, for carrying out Image Rendering by use OpenGL, and imports the buffer zone of described subwindow by drawing data;
Copy module, for described drawing data being copied to the memory block of com component, and generates the image corresponding with described drawing data;
Display module, for showing described image in described main window.
Preferably,
Described creation module specifically comprises:
Judge submodule, judge for the render engine adopted host program, if non-described OpenGL, then described main window is set to unique drafting carrier, if described OpenGL, then trigger and create submodule;
Described establishment submodule, for creating the described subwindow based on described main window.
Preferably,
The drawing apparatus of described render engine also comprises:
Initialization module, for carrying out initialization to described OpenGL, the pixel format that described initialization comprises described subwindow is arranged;
Drafting module, carries out self-defined drafting for described host program according to described image.
Preferably,
Display module, specifically for showing described image by the described render engine of non-described OpenGL in described main window.
As can be seen from the above technical solutions, the embodiment of the present invention has the following advantages:
The method for drafting of a kind of render engine provided in the embodiment of the present invention and device, wherein, method comprises: create the subwindow based on main window; By using OpenGL to carry out Image Rendering, and drawing data is imported the buffer zone of subwindow; Drawing data is copied to the memory block of com component, and generates the image corresponding with drawing data; Image is shown in main window.In the present embodiment, by using OpenGL to carry out Image Rendering, and drawing data is imported the buffer zone of subwindow; Drawing data is copied to the memory block of com component, and generate the image corresponding with drawing data, achieve by constructor window and in the backstage buffer memory of subwindow render component image, solve the restriction due to operating system, use OpenGL as render engine, when host program directly draws the technology of the filling that there will be white on this window, result in the technical matters that display effect is subject to comparatively serious impact.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
A kind of schematic flow sheet of an embodiment of method for drafting of render engine of Fig. 1 for providing in the embodiment of the present invention;
A kind of schematic flow sheet of another embodiment of method for drafting of render engine of Fig. 2 for providing in the embodiment of the present invention;
A kind of structural representation of an embodiment of drawing apparatus of render engine of Fig. 3 for providing in the embodiment of the present invention;
A kind of structural representation of another embodiment of drawing apparatus of render engine of Fig. 4 for providing in the embodiment of the present invention.
Embodiment
Embodiments provide a kind of method for drafting and device of render engine, solve the restriction due to operating system, use OpenGL as render engine, when host program directly draws the technology of the filling that there will be white on this window, result in the technical matters that display effect is subject to comparatively serious impact.
For making goal of the invention of the present invention, feature, advantage can be more obvious and understandable, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, the embodiments described below are only the present invention's part embodiments, and the embodiment of not all.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1, an embodiment of the method for drafting of a kind of render engine provided in the embodiment of the present invention comprises:
101, the subwindow based on main window is created;
In the present embodiment, when host program needs to carry out self-defined drafting, first need to create the subwindow based on main window, this subwindow can be RWnd, be understandable that, aforesaid main window is the window of the acquiescence that each assembly of com component has, and this window is when Components Development, is provided by Development Framework.When carrying out the self-defined drafting of assembly in host program, the drafting carrier of needs is exactly the window of this acquiescence, such as, be DWnd.In ActiveX framework in such as VS2010 development platform, the default window object provided is exactly the drafting carrier of assembly, does not specifically limit herein.
102, by using OpenGL to carry out Image Rendering, and drawing data is imported the buffer zone of subwindow;
After creating the subwindow based on main window, need by using OpenGL to carry out Image Rendering, and drawing data is imported the buffer zone of subwindow, it should be noted that, now, the subwindow RWnd that step 101 creates hides, this subwindow can not need to show, and then, the graph image using OpenGL to carry out assembly is drawn, these drawing datas will be plotted to the back buffer district of subwindow RWnd, namely in GL_Back.
103, drawing data is copied to the memory block of com component, and generates the image corresponding with drawing data;
When carrying out Image Rendering by use OpenGL, and after drawing data being imported the buffer zone of subwindow, need memory block drawing data being copied to com component, and generate the image corresponding with drawing data, it should be noted that, from aforesaid back buffer district copy drawing data to the internal storage data district of assembly, obtain the size of data in back buffer district, create the region of memory of equal size in assembly, and carry out the copy of data.
104, image is shown in main window.
When drawing data being copied to the memory block of com component, and after generating the image corresponding with drawing data, need image to show in main window.
Be understandable that, aforesaid detailed process of image being carried out in main window show will be described in detail in subsequent embodiment, no longer be described in detail herein.
In the present embodiment, by using OpenGL to carry out Image Rendering, and drawing data is imported the buffer zone of subwindow; Drawing data is copied to the memory block of com component, and generate the image corresponding with drawing data, achieve by constructor window and in the backstage buffer memory of subwindow render component image, solve the restriction due to operating system, use OpenGL as render engine, when host program directly draws the technology of the filling that there will be white on this window, result in the technical matters that display effect is subject to comparatively serious impact.
The above is described in detail the method for drafting of render engine, and will carry out display to image in main window below and be described in detail, refer to Fig. 2, another embodiment of the method for drafting of a kind of render engine provided in the embodiment of the present invention comprises:
201, com component provides host program to arrange the interface of render engine;
In the present embodiment, when host program needs to carry out self-defined drafting, first com component provides host program to arrange the interface of render engine, makes host program independently arrange render engine.
202, the render engine that host program adopts is judged, if non-OpenGL, then perform step 203, if OpenGL, then perform step 204;
In the present embodiment, when host program needs to carry out self-defined drafting, first the render engine that host program adopts is judged, if non-OpenGL, then perform step 203, if OpenGL, then perform step 204.
It should be noted that aforesaid non-OpenGL can be the render engine etc. of GDI, GDI+ or DX, does not specifically limit herein.
203, main window is set to unique drafting carrier;
After place judges that render engine that master routine adopts is non-OpenGL, then main window is set to unique drafting carrier, be understandable that, the mode of acquiescence installed by assembly, as unique drafting carrier using main window DWnd, any drafting content is all directly shown in main window DWnd, main window is set to unique drafting carrier and is known to the skilled person technology, be just no longer described in detail herein.
Now, main window is set to unique drafting carrier after can be directly carry out step 209.
204, the subwindow based on main window is created;
After place judges that render engine that master routine adopts is OpenGL, first need to create the subwindow based on main window, this subwindow can be RWnd, be understandable that, aforesaid main window is the window of the acquiescence that each assembly of com component has, this window is when Components Development, is provided by Development Framework.When carrying out the self-defined drafting of assembly in host program, the drafting carrier of needs is exactly the window of this acquiescence, such as, be DWnd.In ActiveX framework in such as VS2010 development platform, the default window object provided is exactly the drafting carrier of assembly, does not specifically limit herein.
205, initialization is carried out to OpenGL;
After creating the subwindow based on main window, need to carry out initialization to OpenGL, the pixel format that initialization comprises subwindow is arranged.
It should be noted that, carry out the initialization operation using OpenGL to play up, comprising the pixel format arranging RWnd is support that OpenGL plays up, and support double buffering, create OpenGL and play up required drawing description list object, i.e. HGLRC, make the function call of OpenGL by failure, arranging double buffering is because subwindow does not need to show image, as long as the image graphics of handle component is shown to backstage, the technical term that aforesaid HGLRC is known to the skilled person, is no longer described in detail herein
206, by using OpenGL to carry out Image Rendering, and drawing data is imported the buffer zone of subwindow;
After creating the subwindow based on main window, need by using OpenGL to carry out Image Rendering, and drawing data is imported the buffer zone of subwindow, it should be noted that, now, the subwindow RWnd that step 101 creates hides, this subwindow can not need to show, and then, the graph image using OpenGL to carry out assembly is drawn, these drawing datas will be plotted to the back buffer district of subwindow RWnd, namely in GL_Back.
207, drawing data is copied to the memory block of com component, and generates the image corresponding with drawing data;
When carrying out Image Rendering by use OpenGL, and after drawing data being imported the buffer zone of subwindow, need memory block drawing data being copied to com component, and generate the image corresponding with drawing data, it should be noted that, from aforesaid back buffer district copy drawing data to the internal storage data district of assembly, obtain the size of data in back buffer district, create the region of memory of equal size in assembly, and carry out the copy of data.
208, by the render engine of non-OpenGL, image is shown in main window;
When drawing data being copied to the memory block of com component, and after generating the image corresponding with drawing data, need by the render engine of non-OpenGL, image to be shown in main window, be understandable that, by the image corresponding with drawing data generated in step 207, by the render engine of non-OpenGL, such as image shows by GDi render engine in main window.
209, host program carries out self-defined drafting according to image.
When the render engine by non-OpenGL of step 208 image carried out in main window show or step 203 main window is set to unique drafting carrier after, host program is needed to carry out self-defined drafting according to image, be understandable that, when aforesaid host program carries out self-defined drafting according to image, need securing component handle, by the object of this handle construct image, and draw.
In the present embodiment, by using OpenGL to carry out Image Rendering, and drawing data is imported the buffer zone of subwindow, drawing data is copied to the memory block of com component, and generate the image corresponding with drawing data, achieve by constructor window and in the backstage buffer memory of subwindow render component image, solve the restriction due to operating system, use OpenGL as render engine, when host program directly draws the technology of the filling that there will be white on this window, result in the technical matters that display effect is subject to comparatively serious impact, and the render engine that host program adopts is judged, carry out and non-OpenGL or the operation corresponding with OpenGL, not only ensure that the drafting of OpenGL is efficient, achieve again the function of the compatibility of many render engines.
Refer to Fig. 3, an embodiment of the drawing apparatus of a kind of render engine provided in the embodiment of the present invention comprises:
Creation module 301, for creating the subwindow based on main window;
Subwindow drafting module 302, for carrying out Image Rendering by use OpenGL, and imports the buffer zone of subwindow by drawing data;
Copy module 303, for drawing data being copied to the memory block of com component, and generates the image corresponding with drawing data;
Display module 304, for showing image in main window.
In the present embodiment, use OpenGL to carry out Image Rendering by subwindow drafting module 302, and drawing data is imported the buffer zone of subwindow; Drawing data is copied to the memory block of com component by copy module 303, and generate the image corresponding with drawing data, achieve by constructor window and in the backstage buffer memory of subwindow render component image, solve the restriction due to operating system, use OpenGL as render engine, when host program directly draws the technology of the filling that there will be white on this window, result in the technical matters that display effect is subject to comparatively serious impact.
The above is described in detail each module of the drawing apparatus of render engine, and be described in detail by add-on module below, refer to Fig. 4, another embodiment of the drawing apparatus of a kind of render engine provided in the embodiment of the present invention comprises:
Creation module 401, for creating the subwindow based on main window;
In the present embodiment, creation module 401 can further include:
Judge submodule 4011, judge for the render engine adopted host program, if non-OpenGL, then main window is set to unique drafting carrier, if OpenGL, then trigger and create submodule 4012;
Create submodule 4012, for creating the subwindow based on main window.
Initialization module 402, for carrying out initialization to OpenGL, the pixel format that initialization comprises subwindow is arranged;
Subwindow drafting module 403, for carrying out Image Rendering by use OpenGL, and imports the buffer zone of subwindow by drawing data;
Copy module 404, for drawing data being copied to the memory block of com component, and generates the image corresponding with drawing data;
Display module 405, for being shown in main window by image, further, display module 405, specifically for showing image by the render engine of non-OpenGL in main window.
Drafting module 406, carries out self-defined drafting for host program according to image.
In the present embodiment, use OpenGL to carry out Image Rendering by subwindow drafting module 403, and drawing data is imported the buffer zone of subwindow, drawing data is copied to the memory block of com component by copy module 4043, and generate the image corresponding with drawing data, achieve by constructor window and in the backstage buffer memory of subwindow render component image, solve the restriction due to operating system, use OpenGL as render engine, when host program directly draws the technology of the filling that there will be white on this window, result in the technical matters that display effect is subject to comparatively serious impact, and judge that the render engine that submodule 4011 pairs of host programs adopt judges, carry out and non-OpenGL or the operation corresponding with OpenGL, not only ensure that the drafting of OpenGL is efficient, achieve again the function of the compatibility of many render engines.
Those skilled in the art can be well understood to, and for convenience and simplicity of description, the system of foregoing description, the specific works process of device and unit, with reference to the corresponding process in preceding method embodiment, can not repeat them here.
In several embodiments that the application provides, should be understood that, disclosed system, apparatus and method, can realize by another way.Such as, device embodiment described above is only schematic, such as, the division of described unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of device or unit or communication connection can be electrical, machinery or other form.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit also can be adopted to realize.
If described integrated unit using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words or all or part of of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, ROM (read-only memory) (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. various can be program code stored medium.
The above, above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a method for drafting for render engine, is characterized in that, comprising:
Create the subwindow based on main window;
By using OpenGL to carry out Image Rendering, and drawing data is imported the buffer zone of described subwindow;
Described drawing data is copied to the memory block of com component, and generates the image corresponding with described drawing data;
Described image is shown in described main window.
2. the method for drafting of render engine according to claim 1, is characterized in that, the subwindow created based on main window specifically comprises:
The render engine that host program adopts is judged, if non-described OpenGL, then described main window is set to unique drafting carrier, if described OpenGL, then create the described subwindow based on described main window.
3. the method for drafting of render engine according to claim 2, is characterized in that, also comprises before judging the render engine that host program adopts:
Com component provides described host program to arrange the interface of described render engine, makes described host program independently arrange described render engine.
4. the method for drafting of render engine according to claim 1, is characterized in that, also comprises before carrying out Image Rendering by use OpenGL:
Carry out initialization to described OpenGL, the pixel format that described initialization comprises described subwindow is arranged.
5. the method for drafting of render engine according to claim 2, is characterized in that, is carried out showing by described image specifically comprising in described main window:
By the described render engine of non-described OpenGL, described image is shown in described main window.
6. the method for drafting of render engine according to claim 1, is characterized in that, also comprises after being shown by described image in described main window:
Described host program carries out self-defined drafting according to described image.
7. a drawing apparatus for render engine, is characterized in that, comprising:
Creation module, for creating the subwindow based on main window;
Subwindow drafting module, for carrying out Image Rendering by use OpenGL, and imports the buffer zone of described subwindow by drawing data;
Copy module, for described drawing data being copied to the memory block of com component, and generates the image corresponding with described drawing data;
Display module, for showing described image in described main window.
8. the drawing apparatus of render engine according to claim 7, is characterized in that, described creation module specifically comprises:
Judge submodule, judge for the render engine adopted host program, if non-described OpenGL, then described main window is set to unique drafting carrier, if described OpenGL, then trigger and create submodule;
Described establishment submodule, for creating the described subwindow based on described main window.
9. the drawing apparatus of render engine according to claim 7, is characterized in that, the drawing apparatus of described render engine also comprises:
Initialization module, for carrying out initialization to described OpenGL, the pixel format that described initialization comprises described subwindow is arranged;
Drafting module, carries out self-defined drafting for described host program according to described image.
10. the drawing apparatus of render engine according to claim 7, is characterized in that, display module, specifically for being shown in described main window by described image by the described render engine of non-described OpenGL.
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| CN110427236B (en) * | 2016-10-18 | 2023-06-09 | 广州视睿电子科技有限公司 | Rendering method and device |
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| CN110134370A (en) * | 2018-02-08 | 2019-08-16 | 龙芯中科技术有限公司 | A kind of method, apparatus of graphic plotting, electronic equipment and storage medium |
| CN110134370B (en) * | 2018-02-08 | 2023-09-12 | 龙芯中科技术股份有限公司 | Graph drawing method and device, electronic equipment and storage medium |
| CN114245192A (en) * | 2021-12-20 | 2022-03-25 | 北京数码视讯软件技术发展有限公司 | Multi-process decoding playing method and device |
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