CN109544668A - Texture coordinate processing method, terminal device and computer readable storage medium - Google Patents
Texture coordinate processing method, terminal device and computer readable storage medium Download PDFInfo
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- CN109544668A CN109544668A CN201710860925.7A CN201710860925A CN109544668A CN 109544668 A CN109544668 A CN 109544668A CN 201710860925 A CN201710860925 A CN 201710860925A CN 109544668 A CN109544668 A CN 109544668A
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- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T15/00—3D [Three Dimensional] image rendering
- G06T15/005—General purpose rendering architectures
Abstract
A kind of texture coordinate processing method, it is related to graphics plotting field, it include: to establish corresponding relative coordinate system respectively using a vertex of tile fragment belonging to dough sheet each in figure to be drawn as origin for the respectively tile fragment, the coordinate range of the relative coordinate system and the precision of graphics processor match；The coordinate on each vertex of the respectively dough sheet is converted into relative coordinate, which is each coordinate of the vertex in the relative coordinate system；The graphics processor is controlled by way of Linear Mapping, which is converted into texture coordinate.In addition, the present invention also provides a kind of terminal device and computer readable storage mediums.The problems such as present invention can reduce memory overhead, and shake or distortion occur for the scene for avoiding the occurrence of and rendering distortion, render.
Description
Technical field
The present invention relates to graphics plotting field more particularly to a kind of texture coordinate processing methods, terminal device and meter
Calculation machine readable storage medium storing program for executing.
Background technique
In three-dimensional rendering, usually to use and arrive texture coordinate.In the prior art, texture coordinate is usually by CPU
(Central Processing Unit, central processing unit) pre-generatmg, then together with apex coordinate and other rendering datas
In incoming GPU (Graphics Processing Unit, graphics processor), to be rendered to texture mapping.However, right
The large area scene as map, on the one hand, since rendering data amount is very huge, the size of GPU data buffering can be serious
Memory overhead when application program operation is influenced, EMS memory occupation is will lead to the texture coordinate data that apex coordinate is passed to GPU and adds
Times.On the other hand, under large area scene, the texture coordinate generated using current texture coordinate processing method can not be accurate
The problems such as indicating object space in scene, shake or distortion occurs so as to cause the scene for rendering distortion occur, rendering.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of texture coordinate processing method, terminal device and computer-readable deposits
The problems such as storage media can reduce memory overhead, and shake or distortion occur for the scene for avoiding the occurrence of and rendering distortion, render.
First aspect of the embodiment of the present invention provides a kind of texture coordinate processing method, comprising: in figure to be drawn
One vertex of tile fragment belonging to each dough sheet is origin, establishes corresponding relative coordinate system, the phase respectively for each tile fragment
The precision of coordinate range and graphics processor to coordinate system matches；The coordinate on each vertex of each dough sheet is converted to
Relative coordinate, the relative coordinate are coordinate of each vertex in the relative coordinate system；Control the graphics processor
By way of Linear Mapping, the relative coordinate is converted into texture coordinate.
Second aspect of the embodiment of the present invention provides a kind of terminal device, comprising: establishment of coordinate system module, for wait draw
A vertex of tile fragment belonging to each dough sheet is origin in the figure of system, establishes corresponding relative coordinate respectively for each tile fragment
System, the coordinate range of the relative coordinate system and the precision of graphics processor match；Coordinate transferring, being used for will be each described
The coordinate on each vertex of dough sheet is converted to relative coordinate, and the relative coordinate is each vertex in the relative coordinate system
Coordinate；Control module is converted to the relative coordinate for controlling the graphics processor by way of Linear Mapping
Texture coordinate.
The third aspect of the embodiment of the present invention provides a kind of terminal device, comprising: memory, processor and is stored in described
It is real when the processor executes the computer program on memory and the computer program that can run on the processor
The texture coordinate processing method that existing embodiments of the present invention first aspect provides.
Fourth aspect of the embodiment of the present invention provides a kind of computer readable storage medium, is stored thereon with computer journey
Sequence, when the computer program is executed by processor, at the texture coordinate that realization embodiments of the present invention first aspect provides
Reason method.
The embodiment of the present invention, by establishing relative coordinate system for each tile fragment, and will be each in figure to be drawn
After the apex coordinate of dough sheet is converted to the relative coordinate under relative coordinate system, it is passed to GPU, then by GPU by incoming relative coordinate
Be converted to texture coordinate, on the one hand, by calculating texture coordinate in real time in the tinter of GPU, computing cost is extremely low in GPU,
Therefore can reduce EMS memory occupation and reduce CPU operation it is happy, on the other hand, pass through using coordinate range and GPU precision phase
Shake or distortion occur for matched relative coordinate system, the scene that can avoid occurring rendering distortion under large area scene, rendering
The problems such as.
For above and other objects, features and advantages of the invention can be clearer and more comprehensible, preferred embodiment is cited below particularly,
And cooperate institute's accompanying drawings, it is described in detail below.
Detailed description of the invention
Fig. 1 is the flow diagram for the texture coordinate processing method that one embodiment of the invention provides；
Fig. 2 be another embodiment of the present invention provides texture coordinate processing method flow diagram；
Fig. 3 be another embodiment of the present invention provides the tile fragment boundary discontinuous problem that solves of texture coordinate processing method
Schematic diagram；
Fig. 4 is the structural schematic diagram for the terminal device that one embodiment of the invention provides；
Fig. 5 be another embodiment of the present invention provides terminal device structural schematic diagram；
Fig. 6 is the hardware structural diagram for the terminal device that one embodiment of the invention provides.
Specific embodiment
Further to illustrate that the present invention is the technical means and efficacy realizing predetermined goal of the invention and being taken, below in conjunction with
Attached drawing and preferred embodiment, to specific embodiment, structure, feature and its effect according to the present invention, detailed description is as follows.
Referring to Fig. 1, Fig. 1 is the flow chart for the texture coordinate processing method that one embodiment of the invention provides.The present embodiment
The texture coordinate processing method of offer may be applicable to carry out smart phone, tablet computer, the notebook of 3 D image drawing
The electronic data device and other non-electronic data devices that can be used on the move that computer etc. can use on the move.Such as figure
Shown in 1, this method is specifically included that
Step S101, using a vertex of tile fragment belonging to each dough sheet in figure to be drawn as origin, for the respectively tile fragment
Corresponding relative coordinate system is established respectively；
Dough sheet is the minimum graphic element in figure rendering, is a kind of figure between two and three dimensions, there is three-dimensional
Face but remain two-dimensional spline curve, can hereby handle reaches curved surface effect by adjusting the shellfish of dough sheet.It is drawn in 3-D graphic
Software cloth, mountainous region, the water surface, polygonal region face and road surface etc. are generally drawn in system with dough sheet.
Tile fragment, grid in other words, for distinguishing different data areas.One complete figure is divided into multiple small
Block, each block can be considered a tile fragment.The data cell usually disposably loaded is a tile fragment.In 3-D image
In drafting, need that each dough sheet is attached in corresponding tile fragment using texture coordinate.
Choose each dough sheet in figure to be drawn respectively belonging to tile fragment a vertex, the coordinate on the vertex is repaired
It is changed to O (0,0), then using the vertex as origin, respectively each tile fragment establishes corresponding relative coordinate system, that is, each watt
Block corresponds to a new coordinate system.The coordinate range of the relative coordinate system and the precision of GPU match, with the mistake rendered in figure
Cheng Zhong obtains the precision that the floating number of GPU indicates enough.
Step S102, the coordinate on each vertex of the respectively dough sheet is converted into relative coordinate, which is each top
Coordinate of the point in the relative coordinate system；
Specifically, the coordinate on each vertex of each dough sheet is converted to the seat under the relative coordinate system created in step S101
Mark, that is, relative coordinate.The coordinate of conversion front and back is world coordinates, and the position of each vertex in conversion front and back in space is not sent out
Raw any variation.
Step S103, the relative coordinate is converted to texture coordinate by way of Linear Mapping by control graphics processor.
Specifically, the relative coordinate on each vertex of each dough sheet after conversion is passed to GPU, and controls GPU and call coloring
Incoming relative coordinate is converted to the texture coordinate for being used for figure rendering using linear coefficient by device, then according to conversion after
Texture coordinate executes texture coordinate sampling operation in GPU accuracy rating.
Texture coordinate processing method provided in an embodiment of the present invention, by establishing relative coordinate system for each tile fragment, and
After the apex coordinate of each dough sheet in figure wait draw is converted to the relative coordinate under relative coordinate system, it is passed to GPU, so
Incoming relative coordinate is converted into texture coordinate by GPU afterwards, on the one hand, sit by calculating texture in real time in the tinter of GPU
Mark, computing cost is extremely low in GPU, thus can reduce EMS memory occupation and reduce CPU operation it is happy, on the other hand, pass through utilization
The relative coordinate system that the precision of coordinate range and GPU match can avoid occurring rendering distortion under large area scene, render
Scene occur shake or distortion the problems such as.
Referring to Fig. 2, Fig. 2 is the flow chart for the texture coordinate processing method that one embodiment of the invention provides.The present embodiment
The texture coordinate processing method of offer may be applicable to carry out smart phone, tablet computer, the notebook of 3 D image drawing
The electronic data device and other non-electronic data devices that can be used on the move that computer etc. can use on the move.Such as figure
Shown in 2, this method is specifically included that
It step S201, is each using the lower-left angular vertex of tile fragment belonging to each dough sheet in figure figure to be drawn as origin
The tile fragment establishes corresponding relative coordinate system respectively；
Dough sheet is the minimum graphic element in figure rendering, is a kind of figure between two and three dimensions, there is three-dimensional
Face but remain two-dimensional spline curve, can hereby handle reaches curved surface effect by adjusting the shellfish of dough sheet.It is drawn in 3-D graphic
Software cloth, mountainous region, the water surface, polygonal region face and road surface etc. are generally drawn in system with dough sheet.
Tile fragment, grid in other words, for distinguishing different data areas.One complete figure is divided into multiple small
Block, each block can be considered a tile fragment.The data cell usually disposably loaded is a tile fragment.In 3-D image
In drafting, need that each dough sheet is attached in corresponding tile fragment using texture coordinate.
Using each dough sheet in figure to be drawn respectively belonging to tile fragment lower-left angular vertex as origin, each watt
Block establishes corresponding relative coordinate system, that is, the corresponding new coordinate system of each tile fragment.The coordinate range of the relative coordinate system
Match with the precision of GPU, during figure renders, to obtain the precision that the floating number of GPU indicates enough.
Step S202, the coordinate on each vertex of the respectively dough sheet is converted into relative coordinate, which is each top
Coordinate of the point in the relative coordinate system；
Specifically, the coordinate on each vertex of each dough sheet is converted to the seat under the relative coordinate system created in step S201
Mark, that is, relative coordinate.Relative coordinate system for example can be two-dimensional Cartesian system.The coordinate of conversion front and back is that the world is sat
Any variation does not occur for mark, the position of each vertex in conversion front and back in space.
Step S203, linear coefficient is obtained divided by the length and width of the tile fragment using the quantity of the texture of tiling；
Specifically, utilizing spread factor ratio X=texWidth/geoWidth and length factor ratio Y=
TexLength/geoLength obtains linear coefficient ratio (ratioX, ratioY)=(tx/ (bx-ax), ty/ (by-
ay))；
Spread factor ratio X is the linear coefficient of U in texture coordinate (column) coordinate components, and wherein texWidth is each
The texture coordinate width range of the integral multiple of a tile fragment, geoWidth are the geographical coordinate width ranges of each tile fragment.
Length factor ratio Y is the linear coefficient of V in texture coordinate (row) coordinate components, and wherein texLength/ is every
The texture coordinate length range of the integral multiple of one tile fragment, geoLength are the geographical coordinate length ranges of each tile fragment.Ground
Managing coordinate is the spherical coordinate that ground point location is indicated with latitude, longitude.Texture coordinate is the coordinate in texture space.
In practical applications, texture mapping is superimposed preset line usually using repeat (repetition) mode repeatedly in map
Manage image.The texture coordinate period is usually 0~1,0 identical as 1 and all integral multiple texture coordinate sampled values.Using opposite
After coordinate system, due to the corresponding new relative coordinate system of each tile fragment, and the coordinate model between each relative coordinate system
It is discrete for enclosing, and in order to avoid there is the discontinuous problem in tile fragment boundary as shown in Figure 3, is needed each relative coordinate system
Coordinate range is set as the multiple of integer.
In other words, the corresponding texture coordinate of the starting point of a tile fragment is usually (0,0), which is simultaneously upper one
The end point of a tile fragment, it is therefore desirable to guarantee that the corresponding texture coordinate of the end point of each tile fragment is integer.Based on above-mentioned
It is required that being geoWidth for a width, length is the tile fragment of geoLength, only need to be by providing that the tile fragment range is corresponding
Integral multiple texture coordinate width and length range texWidth and texLength, can obtain seamless in tile fragment boundary
The successional tile fragment of linking, so as to effectively avoid the occurrence of the discontinuous problem in tile fragment boundary.
Further, it is assumed that the corresponding texture coordinate range of the distance between two neighboring vertex a and b of dough sheet difference
For (tx, ty)；
Then, spread factor ratioX=texWidth/geoWidth and length factor ratioY=texLength/ are utilized
GeoLength determines linear coefficient are as follows:
Ratio (ratioX, ratioY)=(tx/ (bx-ax), ty/ (by-ay))；
RatioX=texWidth/geoWidth=tx/ (bx-ax)=(u2-u1)/(bx-ax)；
RatioY=texLength/geoLength=ty/ (by-ay))=(v2-v1)/(by-ay)；
Wherein, bx is coordinate value of the vertex b in the x-axis of the relative coordinate system, and ax is x of the vertex a in the relative coordinate system
The coordinate value of axis, by are coordinate value of the vertex b in the y-axis of the relative coordinate system, and ay is y-axis of the vertex a in the relative coordinate system
Coordinate value.
In practical applications, texture coordinate range (tx, ty) is variation according to the needs of design.The shape of tile fragment can be with
It is square, rectangle or other irregular shapes.
Further, in other embodiments of the invention, also the texture coordinate of tile fragment can be determined according to the precision of GPU
The precision of width range and length range, GPU is smaller, and the texture coordinate width range and length range of tile fragment are smaller, with into one
Step guarantees that the coordinate range of relative coordinate system and the precision of GPU match.Wherein the precision of GPU for example can be, but not limited to wrap
Include: 16bit (bit), 10bit and 8bit respectively correspond high, medium and low accuracy floating-point number.
Step S204, figure graphics processor is passed to using the relative coordinate and the linear coefficient as coordinate parameters；
Specifically, GPU can be passed to using linear coefficient as uniform parameter.In another embodiment of the present invention, it can also incite somebody to action
Linear coefficient is preset in GPU.
Step S205, control the graphics processor by by the relative coordinate on the respectively vertex multiplied by the linear coefficient, by this
Relative coordinate is converted to texture coordinate.
Specifically, GPU calls tinter, by by the relative coordinate on each vertex multiplied by linear coefficient, phase that will be incoming
Coordinate is converted to and is held in GPU accuracy rating for the texture coordinate of figure rendering then according to the texture coordinate after conversion
Row texture coordinate sampling operation, and further execute the operation of figure rendering.
For map render scenes being lifted below, the generating process of above-mentioned texture coordinate is further illustrated.
Polygonal region face and road surface are usually made of numerous triangle surfaces in map render scenes.Most for one
Junior unit, i.e. triangle ABC, it is assumed that the apex coordinate of three of them vertex A, B, C are respectively (10000000,20000000) A, B
(10000001,20000000), C (10000000,20000001).The lower-left angular vertex of the affiliated map tile fragment X of triangle ABC
Coordinate is T (10000000,20000000), and the width of tile fragment X is 1024.
Under normal conditions, the 16bit high-precision floating number that the GPU of mobile terminal can be indicated, is only capable of accurately expressing ten
System 5~6.The precision that GPU floating number indicates enough in order to obtain, using tile fragment X lower-left angular vertex as origin, by its coordinate
T (10000000,20000000) is revised as O (0,0), under the new coordinate system expressed by T (relative coordinate system), triangle
Coordinate value represented by tri- vertex A, B and C of ABC is respectively At (0,0), Bt (1,0) and Ct (0,1).
It should be noted that any variation does not occur for the position of tri- vertex A, B and C in space, coordinate system
Variation has no effect on the position of object and relativeness in three-dimensional space.Under new coordinate system, the ginseng of video camera (Camera)
Number is also changed, but only affects viewing matrix.It can be floated with GPU to obtain the new of tri- vertex A, B and C
The coordinate value of points accurate expression.
Then, tri- vertex A, the B and C position of triangle ABC is obtained in GPU by Linear Mapping in texture
Texture coordinate in space.If being incited somebody to action specifically, corresponding texture coordinate range is (tx, ty) between B to C in design requirement
The relative coordinate and linear coefficient ratio (ratioX, ratioY) of vertex A, B, C=(tx/ (bx-ax), ty/ (by-ay))
It is passed in GPU as uniform parameter, the relative coordinate on incoming each vertex is obtained each top multiplied by the linear coefficient by GPU
The texture coordinate of point.The process of above-mentioned coordinate conversion, can complete on vertex or pixel shader stage.In a practical application example
In, above-mentioned coordinate can be realized by the code of following OpenGL (OpenGL Shading Language, shading language) tinter
Conversion.
Texture coordinate processing method provided in an embodiment of the present invention, by establishing relative coordinate system for each tile fragment, and
After the apex coordinate of each dough sheet in figure wait draw is converted to the relative coordinate under relative coordinate system, it is passed to GPU, so
Incoming relative coordinate is converted into texture coordinate by GPU afterwards, on the one hand, sit by calculating texture in real time in the tinter of GPU
Mark, computing cost is extremely low in GPU, thus can reduce EMS memory occupation and reduce CPU operation it is happy, on the other hand, pass through utilization
The relative coordinate system that the precision of coordinate range and GPU match can avoid occurring rendering distortion under large area scene, render
Scene occur shake or distortion the problems such as.
Fig. 4 is the structural schematic diagram for the terminal device that one embodiment of the invention provides.The present embodiment is for realizing above-mentioned Fig. 1
Texture coordinate processing method in illustrated embodiment.As shown in figure 4, terminal device provided in this embodiment includes:
Establishment of coordinate system module 401, for being original with a vertex of tile fragment belonging to each dough sheet in figure to be drawn
Point establishes corresponding relative coordinate system, the coordinate range of the relative coordinate system and the essence of graphics processor for the respectively tile fragment respectively
Degree matches；
Coordinate transferring 402, for the coordinate on each vertex of the respectively dough sheet to be converted to relative coordinate, the opposite seat
Mark is each coordinate of the vertex in the relative coordinate system；
Control module 403 is converted to the relative coordinate for controlling the graphics processor by way of Linear Mapping
Texture coordinate.
The detailed process of the respective function of each Implement of Function Module, refers in above-mentioned embodiment illustrated in fig. 1 in the present embodiment
The particular content of description, details are not described herein again.
In the embodiment of the present invention, by establishing relative coordinate system for each tile fragment, and will be each in figure to be drawn
After the apex coordinate of a dough sheet is converted to the relative coordinate under relative coordinate system, it is passed to GPU, opposite seat then will be passed to by GPU
Mark is converted to texture coordinate, on the one hand, by calculating texture coordinate in real time in the tinter of GPU, computing cost pole in GPU
It is low, thus can reduce EMS memory occupation and reduce CPU operation it is happy, on the other hand, pass through using coordinate range and GPU precision
The relative coordinate system to match, the scene that can avoid occurring rendering distortion under large area scene, rendering occur shake or turn round
The problems such as bent.
Fig. 5 be another embodiment of the present invention provides terminal device structural schematic diagram.The present embodiment is for realizing above-mentioned
Texture coordinate processing method in embodiment illustrated in fig. 2.As shown in figure 5, terminal device provided in this embodiment includes:
Establishment of coordinate system module 401, for being original with a vertex of tile fragment belonging to each dough sheet in figure to be drawn
Point establishes corresponding relative coordinate system, the coordinate range of the relative coordinate system and the essence of graphics processor for the respectively tile fragment respectively
Degree matches；
Coordinate transferring 402, for the coordinate on each vertex of the respectively dough sheet to be converted to relative coordinate, the opposite seat
Mark is each coordinate of the vertex in the relative coordinate system；
Control module 403 is converted to the relative coordinate for controlling the graphics processor by way of Linear Mapping
Texture coordinate.
Further, control module 403 are also used to control the graphics processor by multiplying the relative coordinate on the respectively vertex
With linear coefficient, which is converted into the texture coordinate；
Where it is assumed that the corresponding texture coordinate range of range difference of the two neighboring vertex a and b of the dough sheet is (tx, ty),
Then, the linear coefficient are as follows:
Ratio (ratioX, ratioY)=(tx/ (bx-ax), ty/ (by-ay)),
Wherein, spread factor ratioX is the linear coefficient of U coordinate component in texture coordinate, and length factor ratioY is line
The linear coefficient of V coordinate components in coordinate is managed, bx is coordinate value of the vertex b in the x-axis of the relative coordinate system, and ax is that vertex a exists
The coordinate value of the x-axis of the relative coordinate system, by are coordinate value of the vertex b in the y-axis of the relative coordinate system, and ay is vertex a at this
The coordinate value of the y-axis of relative coordinate system.
Further, the terminal device further include:
Afferent module 501, for being passed to the graphics processor using the relative coordinate and the linear coefficient as coordinate parameters.
Further, establishment of coordinate system module 401, specifically for tile fragment belonging to each dough sheet in figure to be drawn
Lower-left angular vertex is origin, establishes corresponding relative coordinate system respectively for the respectively tile fragment.
Further, the terminal device further include:
Module 502 is obtained, the quantity for the texture using tiling obtains described divided by the length and width of the tile fragment
Linear coefficient.
Further, module 502 is obtained to be specifically used for utilizing ratioX=texWidth/geoWidth and ratioY=
TexLength/geoLength obtains linear coefficient ratio (ratioX, ratioY)；Wherein, texWidth is the tile fragment
Integral multiple texture coordinate width range, geoWidth is the geographical coordinate width range of the tile fragment, and texLength is this watt
The texture coordinate length range of the integral multiple of block, geoLength are the geographical coordinate length ranges of the tile fragment.
Further, the terminal device further include:
Determining module 503, for the precision according to the graphics processor, determine the tile fragment texture coordinate width range and
The precision of length range, the graphics processor is smaller, and the texture coordinate width range and length range of the tile fragment are smaller.
The detailed process of the respective function of each Implement of Function Module in the present embodiment refers to and implements shown in above-mentioned Fig. 1 to Fig. 4
Particular content described in example, details are not described herein again.
In the embodiment of the present invention, by establishing relative coordinate system for each tile fragment, and will be each in figure to be drawn
After the apex coordinate of a dough sheet is converted to the relative coordinate under relative coordinate system, it is passed to GPU, opposite seat then will be passed to by GPU
Mark is converted to texture coordinate, on the one hand, by calculating texture coordinate in real time in the tinter of GPU, computing cost pole in GPU
It is low, thus can reduce EMS memory occupation and reduce CPU operation it is happy, on the other hand, pass through using coordinate range and GPU precision
The relative coordinate system to match, the scene that can avoid occurring rendering distortion under large area scene, rendering occur shake or turn round
The problems such as bent.
Referring to Fig. 6, Fig. 6 is the hardware structure diagram for the terminal device that one embodiment of the invention provides.
Terminal device as described in this embodiment, comprising:
Memory 51, processor 52 and it is stored in the computer program that can be run on memory 51 and on the processor 52,
When processor 52 executes the computer program, realize earlier figures 1 to texture coordinate processing side described in embodiment illustrated in fig. 3
Method.
Further, the terminal device further include:
At least one input equipment 53 and at least one output equipment 54.
Above-mentioned memory 51, processor 52, input equipment 53 and output equipment 54 are connected by bus 55.
Wherein, input equipment 53 concretely camera, touch panel, physical button or mouse etc..Output equipment
54 concretely display screens.
Memory 51 can be high random access memory body (RAM, Random Access Memory) memory, can also
For non-labile memory (non-volatile memory), such as magnetic disk storage.Memory 51 can for storing one group
Program code is executed, processor 52 is coupled with memory 51.
Further, the embodiment of the invention also provides a kind of computer readable storage medium, the computer-readable storages
Medium can be in the terminal device being set in the various embodiments described above, which can be earlier figures 6
Memory in illustrated embodiment.It is stored with computer program on the computer readable storage medium, which is located
Manage realizes earlier figures 1 to texture coordinate processing method described in embodiment illustrated in fig. 3 when device executes.Further, the calculating
Machine can storage medium can also be USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), RAM, magnetic disk or
The various media that can store program code such as person's CD.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that process, method, article or device including a series of elements are not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or device
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or device including the element.
It will be appreciated by those skilled in the art that realizing that all or part of the steps of above-described embodiment can be by hardware come complete
At relevant hardware can also being instructed to complete by program, the program can store in a kind of computer-readable storage
In medium, storage medium mentioned above can be read-only memory, disk or CD etc..
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above are modified or are modified
It is right according to the technical essence of the invention for the equivalent embodiment of equivalent variations, but without departing from the technical solutions of the present invention
Any simple modification, equivalent change and modification made by above embodiments, all of which are still within the scope of the technical scheme of the invention.
Claims (13)
1. a kind of texture coordinate processing method, which is characterized in that the described method includes:
Using a vertex of tile fragment belonging to each dough sheet in figure to be drawn as origin, correspondence is established respectively for each tile fragment
Relative coordinate system, the coordinate range of the relative coordinate system and the precision of graphics processor match；
The coordinate on each vertex of each dough sheet is converted into relative coordinate, the relative coordinate is each vertex described
Coordinate in relative coordinate system；
The graphics processor is controlled by way of Linear Mapping, the relative coordinate is converted into texture coordinate.
2. texture coordinate processing method as described in claim 1, which is characterized in that the control graphics processor passes through
The relative coordinate is converted to texture coordinate by the mode of Linear Mapping, comprising:
The graphics processor is controlled by the way that the relative coordinate multiplied by linear coefficient, to be turned to the relative coordinate on each vertex
It is changed to the texture coordinate；
Where it is assumed that the corresponding texture coordinate range of range difference of the two neighboring vertex a and b of the dough sheet is (tx, ty),
Then, the linear coefficient are as follows:
Ratio (ratioX, ratioY)=(tx/ (bx-ax), ty/ (by-ay)),
Wherein, spread factor ratioX is the linear coefficient of U coordinate component in texture coordinate, and length factor ratioY is texture seat
The linear coefficient of V coordinate components in mark, bx are vertex b in the coordinate value of the x-axis of the relative coordinate system, and ax is vertex a in institute
The coordinate value of the x-axis of relative coordinate system is stated, by is coordinate value of the vertex b in the y-axis of the relative coordinate system, and ay is that vertex a exists
The coordinate value of the y-axis of the relative coordinate system.
3. texture coordinate processing method as claimed in claim 2, which is characterized in that the control graphics processor passes through
The relative coordinate on each vertex is also wrapped before the relative coordinate is converted to the texture coordinate multiplied by linear coefficient
It includes:
Using tiling texture quantity divided by the length and width of the tile fragment, obtain the linear coefficient.
4. texture coordinate processing method as claimed in claim 3, which is characterized in that the quantity of the texture using tiling is removed
With the length and width of the tile fragment, the linear coefficient is obtained, is specifically included:
Using ratioX=texWidth/geoWidth and ratioY=texLength/geoLength, the linear system is obtained
Number ratio (ratioX, ratioY)；
Wherein, texWidth is the texture coordinate width range of the integral multiple of the tile fragment, and geoWidth is the ground of the tile fragment
Coordinate width range is managed, texLength is the texture coordinate length range of the integral multiple of the tile fragment, and geoLength is described
The geographical coordinate length range of tile fragment.
5. texture coordinate processing method as claimed in claim 4, which is characterized in that the method also includes:
According to the precision of the graphics processor, the texture geographical coordinate width range and length range of the tile fragment, institute are determined
The precision for stating graphics processor is smaller, and the texture coordinate width range and length range of the tile fragment are smaller.
6. the texture coordinate processing method as described in any one of claim 2 to 5, which is characterized in that described in the control
Graphics processor is by, multiplied by linear coefficient, being converted to the texture for the relative coordinate for the relative coordinate on each vertex
Before coordinate, further includes:
The graphics processor is passed to using the relative coordinate and the linear coefficient as coordinate parameters.
7. texture coordinate processing method according to any one of claims 1 to 5, which is characterized in that described wait draw
Figure in a vertex of tile fragment belonging to each dough sheet be origin, establish corresponding relative coordinate system respectively for each tile fragment
Include:
Using the lower-left angular vertex of tile fragment belonging to each dough sheet in figure to be drawn as origin, established respectively pair for each tile fragment
The relative coordinate system answered.
8. a kind of terminal device characterized by comprising
Establishment of coordinate system module is each for a vertex using tile fragment belonging to each dough sheet in figure to be drawn as origin
The tile fragment establishes corresponding relative coordinate system, the coordinate range and the precision phase of graphics processor of the relative coordinate system respectively
Matching；
Coordinate transferring, for the coordinate on each vertex of each dough sheet to be converted to relative coordinate, the relative coordinate
It is coordinate of each vertex in the relative coordinate system；
The relative coordinate is converted to line for controlling the graphics processor by way of Linear Mapping by control module
Manage coordinate.
9. terminal device as claimed in claim 8, which is characterized in that
The control module is also used to control the graphics processor by being multiplied by linear by the relative coordinate on each vertex
Number, is converted to the texture coordinate for the relative coordinate；
Where it is assumed that the corresponding texture coordinate range of range difference of the two neighboring vertex a and b of the dough sheet is (tx, ty),
Then, the linear coefficient are as follows:
Ratio (ratioX, ratioY)=(tx/ (bx-ax), ty/ (by-ay)),
Wherein, spread factor ratioX is the linear coefficient of U coordinate component in texture coordinate, and length factor ratioY is texture seat
The linear coefficient of V coordinate components in mark, bx are vertex b in the coordinate value of the x-axis of the relative coordinate system, and ax is vertex a in institute
The coordinate value of the x-axis of relative coordinate system is stated, by is coordinate value of the vertex b in the y-axis of the relative coordinate system, and ay is that vertex a exists
The coordinate value of the y-axis of the relative coordinate system.
10. terminal device as claimed in claim 9, which is characterized in that
The terminal device further include:
Module is obtained, the quantity for the texture using tiling obtains the linear system divided by the length and width of the tile fragment
Number；
The acquisition module is specifically used for utilizing ratioX=texWidth/geoWidth and ratioY=texLength/
GeoLength obtains the linear coefficient ratio (ratioX, ratioY)；
Wherein, texWidth is the texture coordinate width range of the integral multiple of the tile fragment, and geoWidth is the ground of the tile fragment
Coordinate width range is managed, texLength is the texture coordinate length range of the integral multiple of the tile fragment, and geoLength is described
The geographical coordinate length range of tile fragment；
The terminal device further include:
Determining module determines the texture coordinate width range and length of the tile fragment for the precision according to the graphics processor
Range is spent, the precision of the graphics processor is smaller, and the texture coordinate width range and length range of the tile fragment are smaller.
11. the terminal device as described in any one of claim 8 to 10, which is characterized in that the terminal device further include:
Afferent module, for being passed to the graphics processor using the relative coordinate and the linear coefficient as coordinate parameters；
The establishment of coordinate system module is specifically for the lower-left angular vertex with tile fragment belonging to each dough sheet in figure to be drawn
Origin establishes corresponding relative coordinate system for each tile fragment respectively.
12. a kind of terminal device, comprising: memory, processor and be stored on the memory and can be on the processor
The computer program of operation, which is characterized in that when the processor executes the computer program, realize such as claim 1 to 7
Any one of described in texture coordinate processing method.
13. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer program
When being executed by processor, texture coordinate processing method according to any one of claims 1 to 7 is realized.
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