JP2004101604A - Device and method of graphics processing, and computer program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device and method in which a graphics processing of an index color mode is made possible in a graphics setting environment by a direct color mode. <P>SOLUTION: In the device and the method of the graphics processing and the computer program, an input index value is converted into color designation data as input data into a direct color mode processing part when an operator inputs the index value of a color look-up table (CLUT), displayed color designation data are outputted by performing a direct color mode processing in which a transformed result is used as an input color designation data, and a displayed color corresponding to the index value input by the operator is set by performing the index color mode processing in which the out put result is used as the input index value. In such a configuration, the color setting on the basis of the CLUT index set by the operator under the graphics setting environment at the direct color mode is correctly processed. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a graphics processing device and method, and a computer program. More specifically, the present invention relates to a graphics processing apparatus and method capable of performing graphics processing in index color mode in a graphics setting environment in direct color mode, and a computer program.
[0002]
[Prior art]
2. Description of the Related Art In PCs, communication terminals, various information home appliances, etc., displays such as CRTs and LCDs are used as user interfaces for data display or data input / output. On such a display, for example, a screen image in which functions according to the usage form of the information home appliance are set is displayed. For example, various functions are set, such as arrangement of input buttons, setting of a data input field, or processing when a button is pressed, and setting of an image of a display screen is also performed. As a programming language for developing an application program for setting the design and functions of such a user interface screen, Sun Microsystems, Inc. Are widely used.
[0003]
A program written in the Java language is converted into byte code (Byte Code) as a Java executable file format independent of a computer and a platform, read by a Java virtual machine (Java VM), and subjected to machine language conversion (interpreter). It is executed on a simple device.
[0004]
In Java, in order to easily produce application software in a short time, software components that do not need to be recompiled are prepared in advance, and a program is created by combining the components. In Java, a technology for reusing these components (Java Beans) has been constructed.
[0005]
Parts are set in units of various components such as windows, buttons, lists, combo boxes, and text input fields to be displayed on a display, and these parts (components) are used as attribute information such as button shapes and arrangement information. "Property", "method" as processing as a result of an action on a part, and further, when an action on a part, for example, data arrival, interrupt occurrence, property change, method call, etc. occurs, an event is sent to another part. An "event" as a function of contact is defined. These “properties”, “methods”, and “events” are component requirements of Java beans.
[0006]
The minimum execution unit of Java is called a "class", and a Java program is generated by one or more classes. The class has variables (Variable) as data and methods (Method) as operations. The program component set as this class can be transferred to and stored in a PC or information home appliance via a network such as the Internet or a LAN, and the device storing the class file does not depend on the platform. A Java virtual machine can execute a program stored in a class file.
[0007]
In the above-mentioned PCs and other information appliances, displays such as CRTs and LCDs are used as user interfaces for data display or data input / output, and most of them are displayed as color images. A Java graphics system based on Java provides such a color setting processing function. In the Java graphics system, a direct color mode for directly specifying a color is adopted.
[0008]
As a method of storing colors in the graphics memory, for example, the direct color mode, which is a format for directly storing the gradation values of R, G, and B, and data of the number of colors that can be simultaneously formed are prepared and indexed. There is an index color mode to add.
[0009]
When expressing colors on a display screen, various colors are synthesized by combining the three primary colors of light, red (R), green (G), and blue (B). That is, by changing the luminance of RGB, white to black with all three primary colors being the maximum luminance are expressed stepwise. For example, if 2 bits are allocated to each color of RGB, 4 × 4 × 4 = 64 colors, if 4 bits are allocated, 16 × 16 × 16 = 4096 colors, and if 8 bits are allocated, 256 × 256 × 256 = 16.770,000 Expression of 7216 colors becomes possible.
[0010]
When colors are combined and displayed, processing is performed for each pixel, which is the minimum display size, and data is recorded as, for example, bitmap data. If bits are simply assigned to one pixel according to the gradation of each color, for example, if each of RGB is 8 bits, it is necessary to assign 8 × 3 = 24 bits per pixel. Therefore, there is a problem that the data amount becomes enormous as the number of pixels increases. Therefore, in such a case, the index color mode is generally used.
[0011]
For example, when “256 colors out of 16.7 million colors can be displayed” is selected, 256 colors to be used are selected from 16.7 million colors in a 256-color color lookup table (referred to as CLUT), and the selected color is selected. A reference number is registered one by one for each color, and the reference number (index) is applied to read and write data. In this way, the data amount required for 24 bits is compressed to 8 bits.
[0012]
Due to the high-speed processing, the limitation of the memory capacity, and the like, many of the information home appliances described above adopt an index color mode to which such a color look-up table (CLUT) is applied.
[0013]
However, the Obstruction Window Toolkit (AWT: Abstraction Window Toolkit), which is a class for a Java graphical user interface provided as a Java-Application Programming Interface (API), does not support the index color mode. And a direct color mode is applied. Therefore, it is intended to execute a color setting process based on CLUT index data by setting a direct color mode execution environment in Java AWT on hardware to which an index color mode using a color lookup table (CLUT) is applied. There is a problem that a color setting completely different from the color is made.
[0014]
[Problems to be solved by the invention]
The present invention has been made in view of the above problems, and provides a graphics processing apparatus and method capable of performing graphics processing in index color mode in a graphics setting environment in direct color mode, and a computer program. The purpose is to:
[0015]
The present invention also applies the index color mode to a user having a hardware environment of the index color mode format in which a color environment is set to perform a color specification by an index, according to the user's intention even when the graphics environment of the direct color mode is set. It is an object of the present invention to provide a graphics processing apparatus and method capable of executing color settings, and a computer program.
[0016]
[Means for Solving the Problems]
According to a first aspect of the present invention,
A graphics processing device that performs a process of setting a pixel display color of a display,
A first graphics processing unit for executing processing according to a direct color mode for inputting color designation data and outputting display color setting data based on the color designation data, and an index set in a color lookup table (CLUT) A second graphics processing unit for executing a process according to an index color mode for inputting a value and outputting a color lookup table (CLUT) setting data corresponding to the index value;
A conversion processing unit that inputs an index value corresponding to the color look-up table (CLUT) and executes a conversion process into color designation data as the first graphics processing unit input data;
The conversion processing unit performs the conversion processing so that display color setting data generated by the first graphics processing unit based on the color designation data of the conversion processing result is equal to an input index value to the conversion processing unit. Executing the second graphics processing section, and using the display color setting data generated in the first graphics processing section as an input index value, outputting the setting data from the color lookup table (CLUT). And a graphics processing device.
[0017]
Further, in one embodiment of the graphics processing device of the present invention, the first graphics processing unit is configured to display, based on the constituent bits of the input color designation data, a display having a number of bits equal to the number of constituent bits of the index value. It is characterized in that it is configured to execute processing for generating color setting data.
[0018]
Further, in one embodiment of the graphics processing device of the present invention, the first graphics processing unit inputs color designation data of 8 bits for each of RGB and displays 8 bits equal to the number of constituent bits of the index value. It is characterized in that it is configured to execute processing for generating color setting data.
[0019]
Further, in one embodiment of the graphics processing device of the present invention, the conversion processing unit inputs an index value of the color look-up table (CLUT), and performs an arithmetic process on the input value as the first graphics processing unit input data. It is characterized in that it is configured to execute conversion processing to color designation data.
[0020]
Further, in one embodiment of the graphics processing device of the present invention, the conversion processing unit inputs 8-bit data as an index value, and obtains the following expression:
R = (X & 0xe0),
G = (X & 0x1c) << 3
B = (X & 0x03) << 6
The first graphics processing unit inputs the 8-bit RGB color designation data generated by the conversion processing unit based on , A process of generating display color setting data including 8 bits of R upper 3 bits, G upper 3 bits, and B upper 2 bits in input data as an input index value for the second graphics processing unit. It is characterized by the following.
[0021]
Further, a second aspect of the present invention provides
A graphics processing method for performing a process of setting a pixel display color of a display,
A data conversion step of inputting an index value set in a color lookup table (CLUT) and converting the index value into color designation data as input data to a first graphics processing unit for executing a direct color mode process;
A first graphics processing step of inputting the color specification data generated by the conversion processing and outputting display color setting data by a direct color mode processing based on the color specification data;
The output display color setting data in the first graphics processing step is input as an index value of a color lookup table (CLUT), and the color lookup table (CLUT) setting data corresponding to the index value is output by the index color mode processing. A second graphics processing step,
Setting the color look-up table (CLUT) setting data output in the second graphics processing step as a pixel display color of a display;
The data conversion processing step includes:
The conversion processing is performed such that display color setting data generated in the first graphics processing step based on the color designation data as a result of the conversion processing is equal to an input index value in the data conversion processing unit. Graphics processing method.
[0022]
Further, in one embodiment of the graphics processing method of the present invention, the first graphics processing step comprises a display comprising a number of bits equal to the number of bits of the index value based on the bits of the input color designation data. The method includes a step of executing a process of generating color setting data.
[0023]
Further, in one embodiment of the graphics processing method according to the present invention, the first graphics processing step comprises inputting 8-bit color designation data for each of RGB and displaying 8 bits equal to the number of constituent bits of the index value. The method includes a step of executing a process of generating color setting data.
[0024]
Further, in one embodiment of the graphics processing method of the present invention, in the data conversion processing step, an index value of the color look-up table (CLUT) is input, and the data is input as the first graphics processing unit input data by arithmetic processing. The conversion processing to the color designation data is executed.
[0025]
Further, in one embodiment of the graphics processing method of the present invention, in the data conversion processing step, 8-bit data as an index value is input, and the following formula:
R = (X & 0xe0),
G = (X & 0x1c) << 3
B = (X & 0x03) << 6
The first graphics processing step inputs the RGB 8-bit color specification data generated in the data conversion processing step based on It is characterized by executing processing for generating display color setting data composed of 8 bits of R upper 3 bits, G upper 3 bits, and B upper 2 bits in data.
[0026]
Further, a third aspect of the present invention provides
A computer program for performing a graphics process of performing a process of setting a pixel display color of a display,
A data conversion step of inputting an index value set in a color lookup table (CLUT) and converting the index value into color designation data as input data to a first graphics processing unit for executing a direct color mode process;
A first graphics processing step of inputting the color specification data generated by the conversion processing and outputting display color setting data by a direct color mode processing based on the color specification data;
The output display color setting data in the first graphics processing step is input as an index value of a color lookup table (CLUT), and the color lookup table (CLUT) setting data corresponding to the index value is output by the index color mode processing. A second graphics processing step,
Setting the color look-up table (CLUT) setting data output in the second graphics processing step as a pixel display color of a display;
The data conversion step includes:
Set as a step of executing the conversion processing so that display color setting data generated in the first graphics processing step based on the color designation data of the conversion processing result is equal to an input index value in the data conversion processing unit. A computer program characterized by the following.
[0027]
[Action]
According to the configuration of the present invention, even when a graphics environment using the direct color mode is set for a device having a hardware device of the index color mode for specifying a color by the index, the user can apply the index color mode. Color setting according to the intention of
[0028]
Further, according to the present invention, an index value of a color lookup table (CLUT) input by an operator is converted into color designation data as input data to a first graphics processing unit for executing a direct color mode process. Executing direct color mode processing using the conversion result as input color specification data to output display color specification data, and executing index color mode processing using the output result as an input index value to correspond to the original input index value Since the display color is set, the color setting process based on the CLUT setting data corresponding to the index value input by the operator can be executed correctly.
[0029]
Further, according to the present invention, since the conversion to the input color designation data to the direct color mode processing execution unit is performed by the arithmetic processing on the input bit data as the index value, the bit length of the index value, Even when the bit length of the color designation data as input data to the first graphics processing unit for executing the direct color mode processing is set to various different values, it is possible to easily cope with it by changing the operation processing mode. It becomes possible.
[0030]
The computer program of the present invention is provided, for example, in a computer-readable format for a general-purpose computer system capable of executing various program codes, in a storage medium or communication medium such as a CD, FD, or MO. And a computer program that can be provided by a communication medium such as a network. By providing such a program in a computer-readable format, processing according to the program is realized on a computer system.
[0031]
Further objects, features, and advantages of the present invention will become apparent from a more detailed description based on embodiments of the present invention described below and the accompanying drawings. In this specification, the term “system” refers to a logical set of a plurality of devices, and is not limited to a device having each configuration in the same housing.
[0032]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a graphics processing apparatus and method and a computer program according to the present invention will be described in detail with reference to the drawings.
[0033]
First, an outline of a color setting processing method in a direct color mode and a color setting method in an index color mode using a color look-up table (CLUT) will be described with reference to FIGS.
[0034]
FIG. 1 shows a color according to a direct color mode applied in an obstruction window toolkit (AWT: Abstraction Window Toolkit), which is a class for a graphical user interface provided as, for example, a Java-API (Application Programming Interface). It is a figure explaining the outline of a setting process. Here, an example of a color setting by an 8 bpp (bit per pixel) method in which a color is set by associating 8-bit data with one pixel of a display is shown.
[0035]
The user can combine various colors by combining the three primary colors of light, red (R), green (G), and blue (B). The user can set a luminance level of 0 to 255 (8 bits) for each of RGB, but when setting 8 bits of data for each of RGB, data becomes 24 bits per pixel (pixel), and the data amount Is large, a conversion process is performed to reduce the color designation data to 8-bit data for each pixel.
[0036]
This conversion process is executed by, for example, “intent” provided as a Java execution environment. For example, the upper 3 bits of the initially set red (R) 8-bit data, the upper 3 bits of the initially set green (G) 8-bit data, and the upper 2 bits of the initially set blue (B) 8-bit data are extracted. And concatenate to set 8-bit data. The color set according to the 8-bit data is output to each pixel 102 forming the display 101.
[0037]
On the other hand, FIG. 2 is a diagram schematically illustrating a color setting method in an index color mode using a color lookup table (CLUT).
[0038]
The color lookup table (CLUT) is a table that stores various color setting data in association with an index. FIG. 2 shows an example in which a color lookup table (CLUT) in which YUVα values constituting YUVα colorimetric data are set is applied. For example, 0 to 255 (8 bits) are set as index values in the color lookup table (CLUT), and a total of 256 types of color data corresponding to each index value are stored.
[0039]
The user specifies an index value of the color lookup table (CLUT): any one of 0 to 255 (8 bits), obtains each value of YUVα corresponding to the specified index, and is determined by each obtained value. Is output to each pixel 152 constituting the display 151.
[0040]
Next, a color setting processing sequence according to the present invention will be described with reference to FIG. The present invention also applies the index color mode to a device having a hardware device of the index color mode format for performing color designation by the index even if the graphics environment of the direct color mode is set, and according to the user's intention. Color setting is possible.
[0041]
In the sequence diagram shown in FIG. 3, a data input / output unit operated by an operator who inputs data for color setting from the left, a conversion processing unit, and a first graphics processing unit for executing processing in a direct color mode A graphics processing unit A, a graphics processing unit B as a second graphics processing unit that executes processing in an index color mode to which a color lookup table (CLUT) is applied, and outputs a display screen to be subjected to drawing processing. 4 shows each process of a display control unit that outputs data by setting a display to be used.
[0042]
A graphics processing unit A as a first graphics processing unit that executes processing in the direct color mode is, for example, an obstruction window toolkit (AWT: Abstraction Window Toolkit) which is a class for a graphical user interface in Java. , And a graphics processing unit that executes graphics processing by “intent” provided as a Java execution environment.
[0043]
An operator specifies a color based on an index of a color lookup table (CLUT) via a data input / output unit. The operator recognizes the contents of the color look-up table (CLUT) and recognizes an index set in the color look-up table (CLUT), for example, a color set based on the designation of 0 to 255 (8-bit index). It is assumed that
[0044]
The index designation data (8-bit index) input by the operator from the data input / output unit is first input to the conversion processing unit. The conversion processing unit performs a conversion process on 8-bit data input from the operator.
[0045]
This conversion processing is RGB 24-bit data conforming to color designation input data for a graphics processing unit A as a first graphics processing unit that executes processing in a direct color mode, that is, R: 8 bits, G: 8 bits , B: are executed as a process of generating 8-bit data.
[0046]
The conversion processing executed by the conversion processing unit is performed according to, for example, the following equation. X is input 8-bit data from the operator.
[0047]
(Equation 1)
R = (X & 0xe0)
G = (X & 0x1c) << 3
B = (X & 0x03) << 6
.. (Equation 1)
[0048]
In the above equation (Equation 1), [0x. . ] Means a hexadecimal number. [&] Indicates AND processing in bit data units. [<<] indicates left logical shift processing in bit data units. A calculation example when the operator specifies, for example, X = 170 = [10101010] as an index value will be described.
[0049]
In the above equation, since 0xe0 = [11100000], 0x1c = [00011100], and 0x03 = [00000011], R = [10101010] & [11100000], G = [10101010] & [00011100], B = [10101010] & [00000011], and the value of R is a value obtained by extracting only the upper 3 bits from the operator input index value, that is, R = [10100000]. G is a value obtained by extracting only the fourth to sixth bits from the operator input index value and logically shifting it to the left by 3 bits, that is, G = [01000000], and B is extracting only the lower two bits from the operator input index value and leftward. , Ie, B = [10000010].
[0050]
The converted value of RGB 8 bit data, a total of 24 bit data, that is, in the above-described specific example,
R = [10100000]
G = [01000000]
B = [10000000]
Are returned to the operator.
[0051]
The operator inputs the response data from the conversion processing unit to the graphics processing unit A that executes the color setting processing in the direct color mode provided on the Java graphical user interface.
[0052]
The graphics processing unit A converts the input 24-bit data into a set number of bits per pixel. Here, it is 8 bpp, and it is assumed that 8 bits are assigned to each pixel as color data. This conversion processing is executed by the Java execution environment “intent” which is a known technique described with reference to FIG.
[0053]
The conversion in the graphics processing unit A is executed as a process of combining the upper 3 bits of R, the upper 3 bits of G, and the upper 2 bits of B from each input 8-bit data of RGB to set 8-bit data. For example, in the above example, that is, each of the 8 bits of RGB generated by the conversion processing unit based on the input value of the operator is:
R = [10100000]
G = [01000000]
B = [10000000]
, The 8-bit data generated by the conversion in the graphics processing unit A is [10101010].
[0054]
Next, the 8-bit value [10101010] generated based on the input 24-bit data in the graphics processing unit A is converted into a second graphic that executes processing in an index color mode to which a color lookup table (CLUT) is applied. It is input to a graphics processing unit B as a graphics processing unit.
[0055]
The graphics processing unit B recognizes the input value as an index value in the color lookup table (CLUT) stored in the storage unit, executes an index search of the color lookup table (CLUT) based on the input value, and The color setting data, for example, each value of YUVα stored corresponding to the index to be obtained is obtained.
[0056]
The graphics processing unit B outputs the obtained value to the display control unit as color setting data, and the display control unit outputs a color based on the setting data to the display.
[0057]
In the processing sequence diagram of FIG. 3, the conversion processing unit returns the 24-bit RGB data generated based on the 8-bit CLUT index data input by the operator to the operator once, and the operator converts the 24-bit RGB data into a graphic. An example of processing for re-input to the data processing unit A is shown, but this re-input processing is omitted, and the conversion processing unit converts 24-bit RGB data generated based on 8-bit index data input by the operator into The sequence may be directly input to the graphics processing unit A. According to this processing, the operator can input only the first 8-bit CLUT index data.
[0058]
In the above-described example, the CLUT index value is set to 8 bits, and the input value to the graphics processing unit that executes the direct color mode is set to 8 bits for each of RGB, that is, data of a total of 24 bits. However, the number of bits of each data is not limited to the above setting example.
[0059]
That is, the conversion processing unit in the graphics processing device of the present invention converts the input bit data as the index value into the input color designation data to the direct color mode processing execution unit (graphics processing unit A) by the arithmetic processing. Therefore, the bit length of the index value and the bit length of the color designation data as input data to the graphics processing unit A for executing the direct color mode processing are other bit number configurations. This can also be handled by changing the operation processing mode of the conversion processing unit.
[0060]
Next, referring to FIG. 4, an operator for inputting data for color setting, a conversion processing unit, a graphics processing unit A as a first graphics processing unit for executing processing in the direct color mode, A graphics processing unit B as a second graphics processing unit that executes processing in an index color mode to which a look-up table (CLUT) is applied, and a display that outputs data to a display that outputs a display screen to be subjected to drawing processing Each process executed by the control unit will be described.
[0061]
First, in step (a), the operator inputs an index value (8 bits) of the color lookup table (CLUT) recognizing the configuration as an input value to the conversion processing unit. In step (b), the conversion processing unit generates 24-bit data of the input value (8 bits) for each of 8 bits of RGB, and responds to the operator. This 24-bit data generation processing is executed according to the above (Equation 1).
[0062]
In step (c), the operator inputs a total of 24 bits of data (8 bits for each of RGB) to a graphics processing unit A as a first graphics processing unit for executing processing in the direct color mode.
[0063]
In step (d), the graphics processing unit A converts the input 24-bit data into 8-bit data. Specifically, the upper 3 bits of R, the upper 3 bits of G, and the upper 2 bits of B are extracted from each of the input RGB 8-bit data to generate 8-bit data.
[0064]
In step (e), the 8-bit data is input to a graphics processing unit B as a second graphics processing unit that executes a process in an index color mode to which a color lookup table (CLUT) is applied.
[0065]
In step (f), the graphics processing unit B recognizes the input value as an index value in the color lookup table (CLUT) stored in the storage unit, and performs an index search of the color lookup table (CLUT) based on the input value. To obtain the color setting data stored in correspondence with the matching index, for example, each value of YUVα, and output the obtained value to the display control unit as the color setting data.
[0066]
In step (g), the display control unit outputs a color based on the CLUT setting data to the display.
[0067]
By the above processing, even if a device having a hardware device of the index color mode format for performing color designation by the index is set to the graphics environment of the direct color mode, the index color mode is applied to the user's intention. According to this, the color setting can be performed.
[0068]
In the above processing example, the color lookup table (CLUT) included in the graphics processing unit that executes the index color mode method is set as the YUVα setting data. However, the color lookup table (CLUT) is used as the YUVα. Not only the setting data format but also any other data setting format may be used as long as the format stores the color setting data corresponding to the index.
[0069]
In the above-described embodiment, the configuration example in which each of the RGB color data is input in the graphics processing unit that executes the direct color mode method has been described. However, the graphics processing unit that executes the direct color mode method also employs a configuration other than RGB. A configuration may be adopted in which color setting data is input and identified. Also, an example has been shown in which, when converting the 24-bit RGB data to the 8-bit data in the graphics processing unit that executes the direct color mode, data extraction of R3 bits, G3 bits, and B2 bits is performed. Is not limited to R3 bits, G3 bits, and B2 bits, and may be other extraction processing modes. The conversion processing unit performs a conversion process according to the mode.
[0070]
Next, the configuration of a graphics processing device that executes the above processing will be described with reference to the block diagram of FIG. FIG. 5 shows, as blocks, main functions required for the graphics processing apparatus according to the present invention which executes the above-described processing. A specific example of the hardware configuration will be described later.
[0071]
The data input / output unit 301 is a data input / output processing unit that executes data input by the operator and data output to the operator, and inputs CLUT index data in the sequence diagram shown in FIG. Is a processing unit that presents 8-bit RGB data as a conversion result based on the RGB data and inputs RGB 8-bit data to the graphics processing unit A303.
[0072]
The conversion processing unit 302 performs a conversion process based on CLUT index data input by the operator, and generates RGB data of 8 bits each, that is, a total of 24 bits data. The graphics processing unit A303 converts 24-bit RGB data input via the data input / output unit 301 into 8-bit data, and extracts, for example, the upper 3 bits of R, the upper 3 bits of G, and the upper 2 bits of B. To generate 8-bit data.
[0073]
The graphics processing unit B304 has a storage unit 307 storing a color lookup table (CLUT), recognizes 8-bit data input from the graphics processing unit A303 as a CLUT index value, and based on the input value. An index search of the color look-up table (CLUT) stored in the storage unit 307 is executed to obtain the color setting data, for example, each value of YUVα stored corresponding to the matching index, and the obtained value is used as the color data. Output to the display control unit 305 as color setting data.
[0074]
The display control unit 305 outputs a color based on the CLUT setting data input from the graphics processing unit B304 to a display unit 306 including a display such as a CRT or an LCD.
[0075]
Next, with reference to FIG. 6, an image display example using the processing of the graphics processing device of the present invention will be described. As can be understood from the above description, the graphics processing apparatus of the present invention can be used in a case where a graphics environment in the direct color mode is set in a device having an index color mode type hardware device for performing color designation by an index. Also, the configuration is such that the color setting according to the user's intention can be performed by applying the index color mode.
[0076]
Therefore, for example, the operator creates plane data including image data that has been color-set in the direct color mode presented by an application program configured based on the Java language and the index color mode to which the CLUT is applied by the above-described processing. It is possible to generate display data having a screen configuration in which the combined planes are combined and present the display data on a display.
[0077]
In FIG. 6, (a) the text plane is a plane created by the operator according to the index color mode to which the CLUT is applied, and (b) the picture plane is presented by an application program configured based on, for example, the Java language. This is a plane for which color settings have been made in the direct color mode. By superimposing these two planes (a) and (b), a composite plane (c) is generated and can be displayed on the display.
[0078]
As described above, for example, a Java virtual machine (Java VM) that applies a color setting processing method in a direct color mode applied in an obstruction window toolkit (AWT: Abstraction Window Toolkit) that is a class for a Java graphical user interface. And an apparatus having hardware capable of executing an index color mode to which a CLUT is applied, further comprising a CLUT for a plane for which a color is set by a direct color mode according to an application based on the Java language. Is generated, a plane for which color setting is performed is generated by the index color mode, and a screen combining both planes can be displayed.
[0079]
Next, an example of a hardware configuration of the graphics processing device of the present invention will be described with reference to FIG. Each component in the graphics processing device 700 will be described with reference to FIG. A CPU (Central Processing Unit) 701, which is a main controller of the graphics processing device 700, executes various applications under the control of an operating system (OS). The CPU 701 executes, for example, the above-described program based on the Java language, specifically, executes the processing of an obstruction window toolkit (AWT: Abstraction Window Toolkit), other image display programs, and other command processing. I do. As shown, the CPU 701 is interconnected with other components by a bus 707.
[0080]
The memory 702 is a storage device used to store a program code executed by the CPU 701 and temporarily store work data being executed.
The memory 702 shown in the figure includes both a nonvolatile memory such as a ROM and a volatile memory such as a DRAM.
[0081]
The index color mode graphics processing chip 750 has a memory 751 in which a color look-up table (CLUT) is stored, and is a dedicated chip for executing a color scheme based on the index color mode based on the CLUT. A dedicated processing circuit is incorporated in the chip.
[0082]
The display controller 703 as a display control unit is a dedicated controller for actually processing a drawing command issued by the CPU 701. The drawing data processed by the display controller 703 is temporarily written to, for example, a frame buffer (not shown) and then output to the screen by the display 708. For example, an image reproduced from the HDD (711) and an image processed by the CPU 701 are displayed on the screen of the display 708, and the user can see the presentation screen.
[0083]
The input device interface 704 is a device for connecting user input devices such as a keyboard 709 and a mouse 710 to the graphics processing device 700.
The user can input a command for processing or displaying an image via the keyboard 709 and the mouse 710.
[0084]
The network interface 705 can connect the graphics processing device 700 to a local network such as a LAN (Local Area Network) or a wide area network such as the Internet according to a predetermined communication protocol such as Ethernet.
[0085]
On a network, a plurality of host terminals and servers (not shown) are connected in a transparent state, and a distributed computing environment is constructed.
On the network, distribution services such as software programs and data contents can be provided. For example, image data can be downloaded to the HDD (711) via a network from another server storing moving images, still images, and the like.
[0086]
The external device interface 706 is a device for connecting an external device such as a digital camera or a hard disk drive (HDD) 711 or a media drive 712 to the graphics processing device 700.
[0087]
The HDD 711 is an external storage device in which a magnetic disk as a storage medium is fixedly mounted, is excellent in storage capacity, data transfer speed, and the like, and is also capable of random access. For example, a program can be installed on the HDD 711 in a state where the software program can be executed. In the HDD 711, a program code of an operating system to be executed by the CPU 701, an application program, a device driver, and the like are stored in a nonvolatile manner.
[0088]
The media drive 712 is a device for loading a portable medium 760 such as a CD (Compact Disc), an MO (Magneto-Optical Disc), a DVD (Digital Versatile Disc), and accessing a data recording surface thereof.
[0089]
The portable medium 760 is mainly used for backing up software programs, data files, and the like as computer-readable data, and for transferring them between systems (that is, including sales, distribution, and distribution). . An application program for performing image processing can be physically distributed / distributed among a plurality of devices using these portable media.
[0090]
The apparatus as shown in FIG. 7 can be realized as a compatible machine or a successor of a personal computer "PC / AT (Personal Computer / Advanced Technology)" of IBM Corporation in the United States. Of course, a computer having another architecture can be applied.
[0091]
The present invention has been described in detail with reference to the specific embodiments. However, it is obvious that those skilled in the art can modify or substitute the embodiment without departing from the spirit of the present invention. That is, the present invention has been disclosed by way of example, and should not be construed as limiting. In order to determine the gist of the present invention, the claims described at the beginning should be considered.
[0092]
The series of processes described in the specification can be executed by hardware, software, or a combined configuration of both. When executing the processing by software, the program recording the processing sequence is installed in a memory in a computer embedded in dedicated hardware and executed, or the program is stored in a general-purpose computer capable of executing various processing. It can be installed and run.
[0093]
For example, the program can be recorded in a hard disk or a ROM (Read Only Memory) as a recording medium in advance. Alternatively, the program is temporarily or permanently stored on a removable recording medium such as a flexible disk, a CD-ROM (Compact Disc Only Memory), an MO (Magneto optical) disk, a DVD (Digital Versatile Disc), a magnetic disk, or a semiconductor memory. It can be stored (recorded). Such a removable recording medium can be provided as so-called package software.
[0094]
The program is installed in the computer from the removable recording medium as described above, and is wirelessly transferred from the download site to the computer, or is transferred to the computer by wire via a network such as a LAN (Local Area Network) or the Internet. The computer can receive the program transferred in this way and install it on a recording medium such as a built-in hard disk.
[0095]
The various processes described in the specification may be executed not only in chronological order according to the description but also in parallel or individually according to the processing capability of the device that executes the processes or as necessary. Further, in this specification, a system is a logical set configuration of a plurality of devices, and is not limited to a device having each configuration in the same housing.
[0096]
【The invention's effect】
As described above, according to the configuration of the present invention, even when a graphics environment in the direct color mode is set in a device having an index color mode type hardware device for performing color designation by an index, the index By applying the color mode, color setting according to the user's intention can be performed.
[0097]
According to the present invention, the index value of the color look-up table (CLUT) input by the operator is converted into color designation data as input data to the first graphics processing unit that executes the direct color mode processing, and is converted. Executes direct color mode processing using the result as input color specification data, outputs display color specification data, executes index color mode processing using the output result as input index value, and displays the display color corresponding to the original input index value Is set, it is possible to correctly execute the color setting process based on the CLUT setting data corresponding to the index value input by the operator.
[0098]
According to the present invention, since the conversion to the input color designation data to the direct color mode processing execution unit is performed by the arithmetic processing on the input bit data as the index value, the bit length of the index value, the direct color It is possible to easily cope with the case where the bit length of the color designation data as input data to the first graphics processing unit for executing the mode processing is variously set by changing the arithmetic processing mode. Become.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating a processing example of a direct color mode.
FIG. 2 is a diagram illustrating a processing example of an index color mode to which a color lookup table (CLUT) is applied.
FIG. 3 is a diagram showing a graphics processing sequence of the present invention.
FIG. 4 is a diagram illustrating a graphics processing sequence according to the present invention.
FIG. 5 is a block diagram illustrating a functional configuration of a graphics processing device according to the present invention.
FIG. 6 is a diagram illustrating an example of use of graphics processing of the present invention.
FIG. 7 is a block diagram illustrating a hardware configuration of a graphics processing device according to the present invention.
[Explanation of symbols]
101 Display
102 pixels
151 Display
152 pixels
211 Color Lookup Table (CLUT)
221 display
222 pixels
301 Data input / output unit
302 Conversion unit
303 Graphics Processing Unit A
304 Graphics processing unit B
305 Display control unit
306 Display
307 storage unit
700 Graphics Processing Unit
701 CPU
702 memory
703 display controller
704 Input device interface
705 network interface
706 External device interface
707 bus
708 display
709 keyboard
710 mouse
711 HDD
712 Media Drive
750 index color mode graphics processing chip
751 Storage unit
760 Portable Media

Claims (11)

A graphics processing device that performs a process of setting a pixel display color of a display,
A first graphics processing unit for executing processing according to a direct color mode for inputting color designation data and outputting display color setting data based on the color designation data, and an index set in a color lookup table (CLUT) A second graphics processing unit for executing a process according to an index color mode for inputting a value and outputting a color lookup table (CLUT) setting data corresponding to the index value;
A conversion processing unit that inputs an index value corresponding to the color look-up table (CLUT) and executes a conversion process into color designation data as the first graphics processing unit input data;
The conversion processing unit performs the conversion processing so that display color setting data generated by the first graphics processing unit based on the color designation data of the conversion processing result is equal to an input index value to the conversion processing unit. Executing the second graphics processing section, and using the display color setting data generated in the first graphics processing section as an input index value, outputting the setting data from the color lookup table (CLUT). Graphics processing device characterized by the above-mentioned. The first graphics processing unit includes:
2. The configuration according to claim 1, wherein a process of generating display color setting data having a number of bits equal to the number of bits constituting the index value is performed based on the bits constituting the input color designation data. Graphics processing unit. The first graphics processing unit includes:
2. The apparatus according to claim 1, wherein a process of inputting 8-bit color designation data for each of RGB and generating display color setting data composed of 8 bits equal to the number of constituent bits of the index value is executed. Graphics processing unit. The conversion processing unit,
2. The configuration according to claim 1, wherein an index value of said color look-up table (CLUT) is input, and conversion processing to color designation data as said first graphics processing unit input data is executed by arithmetic processing. A graphics processing device according to claim 1. The conversion processing unit,
Input 8-bit data as an index value, and
R = (X & 0xe0),
G = (X & 0x1c) << 3
B = (X & 0x03) << 6
Is a configuration for executing a process of generating 8-bit color designation data for each of RGB based on
The first graphics processing unit includes:
The color specification data of 8 bits for each of RGB generated by the conversion processing unit is input, and the display color setting data composed of 8 bits of upper 3 bits of R, upper 3 bits of G, and upper 2 bits of B in the input data is converted into the second color. 2. The graphics processing device according to claim 1, wherein the graphics processing device is configured to execute a process of generating an input index value for the graphics processing unit. A graphics processing method for performing a process of setting a pixel display color of a display,
A data conversion step of inputting an index value set in a color lookup table (CLUT) and converting the index value into color designation data as input data to a first graphics processing unit for executing a direct color mode process;
A first graphics processing step of inputting the color specification data generated by the conversion processing and outputting display color setting data by a direct color mode processing based on the color specification data;
The output display color setting data in the first graphics processing step is input as an index value of a color lookup table (CLUT), and the color lookup table (CLUT) setting data corresponding to the index value is output by the index color mode processing. A second graphics processing step,
Setting the color look-up table (CLUT) setting data output in the second graphics processing step as a pixel display color of a display;
The data conversion processing step includes:
The conversion processing is performed such that display color setting data generated in the first graphics processing step based on the color designation data as a result of the conversion processing is equal to an input index value in the data conversion processing unit. Graphics processing method. The first graphics processing step includes:
7. The method according to claim 6, further comprising: executing a process of generating display color setting data having a number of bits equal to the number of constituent bits of the index value based on constituent bits of the input color designation data. Graphics processing method. The first graphics processing step includes:
7. The step according to claim 6, further comprising a step for inputting 8-bit color designation data for each of RGB and generating a display color setting data consisting of 8 bits equal to the number of constituent bits of the index value. Graphics processing method. The data conversion processing step includes:
7. The method according to claim 6, wherein an index value of the color look-up table (CLUT) is input, and a conversion process to color designation data as the first graphics processing unit input data is executed by an arithmetic process. Graphics processing method. The data conversion processing step includes:
Input 8-bit data as an index value, and
R = (X & 0xe0),
G = (X & 0x1c) << 3
B = (X & 0x03) << 6
And performs a process of generating 8-bit color designation data for each of RGB based on
The first graphics processing step includes:
The color designation data of each of 8 bits of RGB generated in the data conversion processing step is input, and display color setting data including 8 bits of upper 3 bits of R, upper 3 bits of G, and upper 2 bits of B in the input data is generated. The graphics processing method according to claim 6, wherein the processing is performed. A computer program for performing a graphics process of performing a process of setting a pixel display color of a display,
A data conversion step of inputting an index value set in a color lookup table (CLUT) and converting the index value into color designation data as input data to a first graphics processing unit for executing a direct color mode process;
A first graphics processing step of inputting the color specification data generated by the conversion processing and outputting display color setting data by a direct color mode processing based on the color specification data;
The output display color setting data in the first graphics processing step is input as an index value of a color lookup table (CLUT), and the color lookup table (CLUT) setting data corresponding to the index value is output by the index color mode processing. A second graphics processing step,
Setting the color look-up table (CLUT) setting data output in the second graphics processing step as a pixel display color of a display;
The data conversion step includes:
Set as a step of executing the conversion processing so that display color setting data generated in the first graphics processing step based on the color designation data of the conversion processing result is equal to an input index value in the data conversion processing unit. A computer program characterized by being performed.

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