CN109614656A - A kind of TLM model showing that list is called for OpenGL - Google Patents
A kind of TLM model showing that list is called for OpenGL Download PDFInfo
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- CN109614656A CN109614656A CN201811355757.7A CN201811355757A CN109614656A CN 109614656 A CN109614656 A CN 109614656A CN 201811355757 A CN201811355757 A CN 201811355757A CN 109614656 A CN109614656 A CN 109614656A
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Abstract
The present invention relates to a kind of TLM models that list calling is shown for OpenGL, comprising: display list storage unit, for storing preset display list；Control unit is called, for showing list according to glCallList command calls；Direct storage control unit, for obtaining the display table data in display list, and when receiving the call instruction for calling control unit to send when calling control unit to call display list, transmission display table data is to calling control unit；Pause information is fed back to calling control unit for obtaining and storing the pause information in display table data, and when receiving the call instruction for calling control unit to send by nested table unit.The TLM model solves the problems, such as that data source address frequently changes in multiple glCallList nesting situation, realizes the accurate acquisition function of display table data, and realizes that the period is short, and simulation velocity is fast, can find the defect in terms of algorithm, framework and function in time.
Description
Technical field
The invention belongs to computer hardware modeling technique fields, and in particular to a kind of to show what list was called for OpenGL
TLM model.
Background technique
Currently, China is just at independent development graphics processor chip (Graphic Processing Unit, GPU), it is hard
Part logic is huge, and it is a very long work that (Method at Register Transfer Level) design, which is realized, from system architecture document preparation to rtl
Journey, therefore for the software/hardware coordinate design and co-verification of system, analog rate is extremely important.
TLM (things level modeling method) is a kind of advanced digital system model method, can be in the early stage rank of project
Section quickly constructs system model, it separates the details of communication details and function unit or communication construction between model.
Communication mechanism is modeled as channel, and things request generally occurs when calling the interface function of these channel models, and interface letter
Number encapsulates the low-level details of information exchange.In things level, the function of TLM stronger adjusting data transmission -- data itself it is interior
The start-stop point held and transmitted, and be related to implementing as far as possible less.
And the conventional method speed based on Method at Register Transfer Level (RTL) modeling is slow, and only in design process
Later stage could obtain required system model.Therefore, in order to improve the progress and reliability of independent research GPU project, compel
A kind of method for needing colleges and universities cut can shorten the design process of entire design cycle and secondary graphics processor.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, the present invention provides one kind to show list tune for OpenGL
TLM model.The technical problem to be solved in the present invention is achieved through the following technical solutions:
The present invention provides a kind of TLM models that list calling is shown for OpenGL, comprising:
List storage unit is shown, for storing preset display list；
Control unit is called, for showing list according to glCallList command calls；
Direct storage control unit, it is described aobvious for obtaining when the calling control unit calls the display list
Show the display table data in list, and when receiving the call instruction that the calling control unit is sent, described in transmission
Show table data to the calling control unit；
Nested table unit for obtaining and storing the pause information in the display table data, and works as and receives institute
When stating the call instruction for calling control unit to send, the pause information is fed back into the calling control unit.
In one embodiment of the invention, the calling control unit is also used to by connecting the nested table unit
The never call part in the display list is handled according to the pause information.
In one embodiment of the invention, further include data buffer unit, connect the direct storage control unit and
The calling control unit is transmitted to the calling for caching the display table data, and by the display table data
Control unit.
In one embodiment of the invention, the calling control unit includes information assembling module, the information assembling
Module connects the data buffer unit, for being assembled to the display table data, formed be arranged successively it is multiple
OpenGL function.
In one embodiment of the invention, the calling control unit further includes judgment module, connects the information group
Die-filling piece, for successively judging whether the multiple OpenGL function is glCallList order.
In one embodiment of the invention, the calling control unit further includes calling processing module, at the calling
Module is managed to be used to directly export the non-glCallList order when current OpenGL function is non-glCallList order,
It is next aobvious according to the glCallList command calls when current OpenGL function is glCallList order
Show list, and the pause information of current display list is sent to the nested table unit.
In one embodiment of the invention, the calling control unit further includes counting module, and the counting module is used
In the call number for counting the display list, count signal is obtained.
In one embodiment of the invention, the nested table unit includes nested table memory module and feedback module,
In,
The nested table memory module connects the calling processing module, for storing the temporary of the display list called
Stop information；
The feedback module connects the nested table memory module and the judgment module, for according to the count signal
The pause information is fed back into the calling control unit.
In one embodiment of the invention, the pause information includes the middle glCallList order of the display list
The byte-sized of the remaining never call part of the storage address of corresponding next OpenGL function and the display list.
Compared with prior art, the beneficial effects of the present invention are:
1, the present invention solves in multiple glCallList nesting situation for the OpenGL TLM model for showing that list is called
The problem of data source address frequently changes realizes the accurate acquisition function of display table data.
2, the present invention shows that the TLM model that list is called is asked for the specific implementation of glCallList algorithm for OpenGL
Topic, the microstructure design of glCallList algorithm has been carried out based on TLM model, and it is right to have well solved chip design early stage
The validation problem in advance of glCallList algorithm and framework.
3, the TLM model realization period is short, and simulation velocity is fast.
Detailed description of the invention
Fig. 1 is a kind of module map of TLM model that list calling is shown for OpenGL provided in an embodiment of the present invention；
Fig. 2 is a kind of structural representation of TLM model that list calling is shown for OpenGL provided in an embodiment of the present invention
Figure；
Fig. 3 is a kind of concrete structure schematic diagram for calling control unit and nested table unit provided in an embodiment of the present invention；
Fig. 4 is the calling process schematic diagram that a kind of OpenGL provided in an embodiment of the present invention shows list call method；
Fig. 5 is the schematic flow chart that a kind of OpenGL provided in an embodiment of the present invention shows list call method；
Fig. 6 is the detail flowchart that a kind of OpenGL provided in an embodiment of the present invention shows list call method.
Specific embodiment
Below in conjunction with specific embodiment, the present invention will be described in detail, and embodiments of the present invention are not limited thereto.
Embodiment one
Referring to Figure 1, Fig. 1 is a kind of TLM model for showing that list is called for OpenGL provided in an embodiment of the present invention
Module map.The TLM model of the present embodiment includes display list storage unit 101, for storing preset display list；
Control unit 102 is called, for showing list according to glCallList command calls；Direct storage control unit 104, is used
In when the calling control unit 102 calls the display list, the display table data in the display list is obtained, and
And when receiving the call instruction that the calling control unit 102 is sent, the display table data is transmitted to the calling
Control unit 102；Nested table unit 103 for obtaining and storing the pause information in the display table data, and is worked as and is connect
When receiving the call instruction that the calling control unit 102 is sent, the pause information is fed back into the calling control unit
102。
Specifically, control unit 102 is called to receive externally input glCallList order first, according to this
GlCallList order sends call instruction to direct storage control unit 104, and direct storage control unit 104 is according to the tune
The display table data shown accordingly in list in display list storage unit 101 is obtained with instruction, and the display is arranged
Table data, which are transmitted to, calls control unit 102, then control unit 102 is called to start to locate to received display table data
Reason calls control unit 102 can be again to directly storage control when there is glCallList order in received display list
Unit 104 processed sends new call instruction, while the pause information in the display list handled is stored in nested list
Member 103.Then, direct storage control unit 104 obtains corresponding in display list storage unit 101 according to new call instruction
The display list of next nesting, and the display table data in the display list is handled, to successively carry out multiple
Nesting allocation processing.
Further, it calls control unit 102 to connect nested table unit 103, control unit 102 is called to be also used to according to temporarily
Stop information not completing the part called due to Embedded process and re-calling to all display lists.Specifically, described
Pause information includes showing the storage address of the corresponding next OpenGL function of middle glCallList order of list and showing
Show the byte-sized of the remaining never call part of list.
Further, display list storage unit 101 divides according to address and is stored with multiple display list List_1,
List_2, List_x ..., and it is mutually indepedent between multiple display lists, it can also be interrelated.For example, for display
List List_1 and List_2, if List_2 is not the display column pointed by some glCallList order in List_1
Table, similarly, List_1 are also not the display list pointed by some glCallList order in List_2, then this two
A display list is independent from each other；It otherwise, then is related.
Further, Fig. 2 is referred to, Fig. 2 is provided in an embodiment of the present invention a kind of for OpenGL display list calling
TLM model structural schematic diagram.Preferably, which further includes data buffer unit 105, and data buffer unit 105 connects
It connects direct storage control unit 104 and calls control unit 102, for caching display table data, and will show table data
It is transmitted to and calls control unit 102.
Further, Fig. 3 is referred to, Fig. 3 is a kind of calling control unit provided in an embodiment of the present invention and nested list
The concrete structure schematic diagram of member.In the present embodiment, calling control unit 102 includes the information assembling module being sequentially connected electrically
1021, judgment module 1022, calling processing module 1023 and counting module.Information assembling module 1021 is connected by TLM interface
Data buffer unit 105 is formed successively for assembling the display table data from display list storage unit 101
Multiple OpenGL functions of arrangement；1022 link information of judgment module assembles module 1021, for successively judging multiple OpenGL
Whether function is glCallList order.Processing module 1023 is called to be used for the judging result according to judgment module 1022 to described
OpenGL function performs corresponding processing: if current OpenGL function is non-glCallList order, directly exporting non-
GlCallList order；If current OpenGL function is glCallList order, next according to glCallList command calls
It shows list, and the pause information of current display list is sent to nested table unit 103.
Counting module 1024 is used to count the call number of display list, obtains count signal.The count signal is used for
Control calls processing module 1023 to start calling process.
Further, nested table unit 103 includes nested table memory module 1031 and feedback module 1032, wherein nested
1031 call connected processing module 1023 of table memory module, for storing the pause information for the display list called；Feedback
Module 1032 connects nested table memory module 1031 and judgment module 1022, for being incited somebody to action according to the count signal of counting module 1024
Pause information, which is fed back to, calls control unit 102.
In addition, in this example it is shown that list storage unit 101, calling control unit 102, directly storage control list
Multiple TLM interfaces (transaction-level interface), data are provided in member 104, nested table unit 103 and data buffer unit 105
Input and output with command signal pass through the TLM interface and carry out.
The TLM model for showing list calling for OpenGL in order to more clearly describe the present invention, now shown in Fig. 3
For multinest shows list, the operational process of TLM model is specifically described.
Firstly, setting 0 for the initial count value in counting module 1024, it is defeated that initial glCallList order 0 will be inputted
Enter to call processing module 1023, calls processing module 1023 according to the initial glCallList order to direct storage control unit
104 send call instruction, and storage control unit 104 sends out corresponding first display table data by data buffer unit 105
It send to information and assembles module 1021, information assembles module and assembles to received first display table data, for example function is added
Energy code and load etc., obtain the list of all OpenGL functions, and are sent to and call processing module 1023.Call processing module
1023 successively execute each OpenGL function since the source address srcAddr1 of the first display list, while judgment module 1022 is sentenced
Whether each OpenGL function that breaks is glCallList order, if current OpenGL function is not glCallList order, is called
Processing module 1023 exports the current OpenGL function and executes next OpenGL function；If current OpenGL function is
GlCallList order encounters the glCallList order 1 in the first display list, described first handled is aobvious
Show that the calling path of list will jump, at this point, the count value in counting module 1024 becomes 1 from 0, then glCallList
The byte-sized of the address and remaining order of ordering 1 corresponding next OpenGL function is saved in nested table memory module
1031.It calls the information according to entrained by glCallList order 1 of processing module 1023 to send call instruction, then directly stores
Control unit 104 calls the second display list, similarly, calls processing module 1023 from the source address of the second display list
SrcAddr2 starts each OpenGL function for successively executing the second display list, while judgment module 1022 judges each OpenGL letter
Whether number is glCallList order.It does not include glCallList order in the second display list, therefore, respectively in the present embodiment
OpenGL function is calling processing module 1023 successively to be executed, and will not jump.When going in the second display list
The last item OpenGL function after, nested table memory module 1031 is corresponding by the glCallList order 1 being saved
The address of next OpenGL function, which is fed back to, calls processing module 1023, and processing module 1023 is called to be returned according to these information
First display list, and since it is described first display list in glCallList order 1 next OpenGL function after
It is continuous to be called processing, while the count value in metering module 1024 subtracts 1, becomes 0 from 1.
Then, it when calling processing module 1023 to encounter the glCallList order 2 in the first display list, is carrying out
The first display list of processing it will happen again in calling path jumps, at this point, the count value in metering module 1024 adds
1, i.e., the byte-sized of the address and remaining order that become the corresponding next OpenGL function of 1, glCallList order 2 from 0
It saves to nested table memory module 1031.Then call the information according to entrained by glCallList order 2 of processing module 1023
Call instruction is sent, then directly storage control unit 104 calls third to show list, similarly, calls processing module 1023
Each OpenGL function that third shows list, judgement are successively executed since the source address srcAddr3 that the third shows list
Module 1022 judges whether each OpenGL function is glCallList order.It is arranged when calling processing module 1023 to encounter third display
When glCallList order 3 in table, the third handled show list it will happen again in calling path jumps
Turn, at this point, the count value in metering module 1024 adds 1 again, i.e., becomes 2 from 1, glCallList order 3 is corresponding next
The byte-sized of the address of OpenGL function and remaining order is saved to nested table memory module 1031.Subsequent basis
Information entrained by glCallList order 3 calls the 4th display list, similarly, from the source address of the 4th display list
SrcAddr4 starts successively to execute each OpenGL function of the 4th display list, judge each OpenGL function whether be
GlCallList order.It does not include glCallList order in the 4th display list in the present embodiment, therefore, each OpenGL letter
Number is successively executed, and will not be jumped.
After calling processing module 1023 to go to the last item OpenGL function in the 4th display list, nested table
The address of the corresponding next OpenGL function of the glCallList order 3 being saved is fed back to calling by memory module 1031
Processing module 1023 calls processing module 1023 to return to third according to these address informations and shows list, while metering module
Count value in 1024 subtracts 1, i.e., 2 become 1, then processing module 1023 is called to show in list from the third
Next OpenGL function of glCallList order 3 starts to continue calling processing, until third shows that list has been called
Finish, then the first display column is returned to according to the address for the corresponding next OpenGL function of glCallList order 2 being saved
Table, while the count value in metering module 1024 subtracts 1, i.e., becomes 0 from 1, then calls processing module 1023 aobvious from described first
Show that next OpenGL function of the glCallList order 2 in list starts to continue calling processing, until described first
OpenGL function in display list is all disposed, at this point, entire calling process terminates.
The present embodiment solves in multiple glCallList nesting situation for the OpenGL TLM model for showing that list is called
The problem of data source address frequently changes realizes the accurate acquisition function of display table data.In addition, the TLM model solves
Chip design early stage realizes that the period is short to the validation problem in advance of glCallList algorithm and framework, and simulation velocity is fast.
Embodiment two
In the technology of above-described embodiment, a kind of display list called side of TLM model of the present invention is present embodiments provided
Method, refers to Fig. 5, and Fig. 5 is the schematic flow chart that a kind of OpenGL provided in an embodiment of the present invention shows list call method.
Present embodiments provide a kind of OpenGL multinest display list call method, which comprises
S1: each OpenGL function in the first display list is obtained；
S2: successively judging whether each OpenGL function is glCallList order, if it is not, then described in output
OpenGL function；If so, thening follow the steps S3；
S3: according to the display list of the glCallList command calls nesting；
S4: the unfinished portion in the display list of all nestings is handled.
Further, the S1 includes:
S11: the storage information of the first display list is obtained；
Specifically, step S11 includes:
S111: the first source address srcAddr1 and the first byte-sized size1 of the first display list are determined；
Described in the display list storage address and byte-sized carried according to the glCallList order being originally inputted determines
The the first source address srcAddr1 and the first byte-sized size1 of first display list.
S112: it is aobvious that described first is calculated according to the first source address srcAddr1 and the first byte-sized size1
Show the corresponding first end address lastAddr1 of the last item OpenGL function in list.
Wherein, the calculation formula of the first end address lastAddr1 are as follows:
LastAddr1=srcAddr1+size1.
S12: the OpenGL data in the first display list according to the storage acquisition of information；
Specifically, since successively obtained the first source address srcAddr1 it is described first display list in OpenGL
Data.
S13: the OpenGL data are assembled, OpenGL function is obtained.
Specifically, the complete OpenGL data are assembled according to the format of setting, for example function code and mark is added
Know symbol etc., obtain the list of complete OpenGL function, to be called and judge for following.
In addition, in the present embodiment, before the S1 further include:
S0: being arranged nested degree variables, for counting the nested number in display list calling process.
Specifically, setting parameter nestingCount is used to count in display list calling process as nested degree variables
Nested number, wherein the initial value of variable nestingCount is set as 0, when the nesting for primary display list occur, also
It is often to encounter a glCallList order, the value of variable nestingCount adds one.
Then, Fig. 6 is referred to, Fig. 6 is that a kind of OpenGL provided in an embodiment of the present invention shows the detailed of list call method
Thin flow chart.As shown in fig. 6, the S2 includes:
Successively judge whether the OpenGL function is glCallList life since the first source address lastAddr1
It enables, when current OpenGL function is non-glCallList order, directly exports the current OpenGL function；Judge described current
Whether the corresponding address of OpenGL function is lastAddr1, is judged if not, going to next OpenGL function, if so,
Then the calling of the display list terminates；When the current OpenGL function is glCallList order, step S3 is executed.
Further, the S3 includes:
S31: when there is glCallList order in the OpenGL function, the value of the nested degree variables is added
One；
S32: the address of the corresponding next OpenGL function of the glCallList order and the word of remaining order are saved
Save size；
S33: the second display list is jumped to according to the entrained information of the glCallList order and continues to call.
Further, the S33 includes:
S331: with determining the second source of the second display list according to the entrained information of the glCallList order
Location srcAddr2 and the second byte-sized size2；
S332: first source address is updated with the second source address srcAddr2 and the second byte-sized size2
SrcAddr1 and the first byte-sized size1；
S333: corresponding second end address of the last item OpenGL function in the second display list is calculated
lastAddr2；
S334: the OpenGL data of the second display list are obtained since the source address srcAddr2, and are repeated
Step S2, S3 and S4, until the display list calling of all nestings finishes.
Further, the S4 includes:
S41: it after the display list of all nestings is called, is corresponded to when there is maximum value to the nested degree variables
N show list remaining OpenGL function be called, repeat step S2, S3 and S4；
S42: according to the descending sequence of the nested degree variables, in the display list unfinished portion of all nestings
Remaining OpenGL function be successively called, until return to it is described first display list, and to it is described first display list in
All residue OpenGL functions be called.
Specifically, the S42 includes:
S421: after the N shows that list is called, the value of the nesting degree variables becomes N-1；
S422: N-1 corresponding to nested degree variables N-1 shows that the remaining OpenGL function of list is called, weight
Multiple step S2, S3 and S4, until the value of the nested degree variables becomes 0；
S423: the remaining OpenGL function of list, which is called, to be shown to nested degree variables 0 corresponding first.
The OpenGL multinest of the present embodiment shows that list call method stores information, acquisition from display list is obtained
Several aspects such as OpenGL data, the analysis of OpenGL data and glCallList order Embedded process are realized to display list
Calling function, solve data source address in multiple glCallList nesting situation and frequently change, jump live important information
The problem of preservation and subsequent supplement are called, realizes the accurate acquisition function of display table data.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention
Protection scope.
Claims (9)
1. a kind of TLM model for showing that list is called for OpenGL characterized by comprising
It shows list storage unit (101), for storing preset display list；
It calls control unit (102), for showing list according to glCallList command calls；
Direct storage control unit (104), for obtaining when the calling control unit (102) calls the display list
Display table data in the display list, and when the call instruction for receiving calling control unit (102) transmission
When, the display table data is transmitted to the calling control unit (102)；
Nested table unit (103) for obtaining and storing the pause information in the display table data, and works as and receives institute
When stating the call instruction for calling control unit (102) to send, the pause information is fed back into the calling control unit
(102)。
2. TLM model according to claim 1, which is characterized in that the calling control unit (102) connects the nesting
Table unit (103) is also used to handle the never call part in the display list according to the pause information.
3. TLM model according to claim 1, which is characterized in that further include data buffer unit (105), described in connection
Direct storage control unit (104) and the calling control unit (102), for caching the display table data, and by institute
It states display table data and is transmitted to the calling control unit (102).
4. TLM model according to claim 3, which is characterized in that the calling control unit (102) includes information assembling
Module (1021), information assembling module (1021) connects the data buffer unit (105), for the display list
Data are assembled, and the multiple OpenGL functions being arranged successively are formed.
5. TLM model according to claim 4, which is characterized in that the calling control unit (102) further includes judging mould
Block (1022) connects information assembling module (1021), for successively judge the multiple OpenGL function whether be
GlCallList order.
6. TLM model according to claim 5, which is characterized in that the calling control unit (102) further includes at calling
It manages module (1023), the calling processing module (1023) is used for when current OpenGL function is non-glCallList order,
The non-glCallList order is directly exported,
When current OpenGL function is glCallList order, arranged according to the next display of the glCallList command calls
Table, and the pause information of current display list is sent to the nested table unit (103).
7. TLM model according to claim 6, which is characterized in that the calling control unit (102) further includes count module
Block (1024), the counting module (1024) are used to count the call number of the display list, obtain count signal.
8. TLM model according to claim 7, which is characterized in that the nesting table unit (103) includes nested table storage
Module (1031) and feedback module (1032), wherein
The nested table memory module (1031) connects the calling processing module (1023), for storing the display called
The pause information of list；
The feedback module (1032) connects the nested table memory module (1031) and the judgment module (1022), is used for root
The pause information is fed back into the calling control unit (102) according to the count signal.
9. TLM model described in any one of claim 4 to 8, which is characterized in that the pause information includes the display column
The storage address of the corresponding next OpenGL function of the middle glCallList order of table and the residue of the display list are not
The byte-sized of calling section.
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