Program, information storage medium, and image generation system
View Patent ↗A program for generating an image, the program causing a computer to function as: an object space setting section which sets an object in an object space; a vertex processing section which performs per-vertex processing; and a pixel processing section which performs per-pixel processing, wherein, when subjecting an object of a first group to predetermined processing which is implemented by a first processing and a second processing, the vertex processing section performs the first processing with a processing load lower than a processing load of the second processing, and the pixel processing section performs the second processing; and wherein, when subjecting an object of a second group differing from the first group to the predetermined processing which is implemented by a third processing and a fourth processing, the vertex processing section performs the third processing with a processing load higher than a processing load of the fourth processing, and the pixel processing section performs the fourth processing.
1. A computer-readable storage medium storing a program for generating an image, which when executed, causes a computer to function as:
an object space setting section which sets an object in an object space;
a vertex processing section which performs per-vertex processing; and
a pixel processing section which performs per-pixel processing,
wherein, when subjecting an object of a first group to predetermined processing which is implemented by a first processing and a second processing, the vertex processing section performs the first processing with a processing load lower than a processing load of the second processing, and the pixel processing section performs the second processing; and
wherein, when subjecting an object of a second group differing from the first group to the predetermined processing which is implemented by a third processing and a fourth processing, the vertex processing section performs the third processing with a processing load higher than a processing load of the fourth processing, and the pixel processing section performs the fourth processing.
2. The computer-readable storage medium as defined in claim 1 , wherein the object of the first group is a background object and the object of the second group is a moving object.
3. The computer-readable storage medium as defined in claim 1 , wherein the object of the second group forms a primitive plane which is smaller than a primitive plane forming the object of the first group.
4. The computer-readable storage medium as defined in claim 1 , wherein the predetermined processing is light scattering processing.
5. The computer-readable storage medium as defined in claim 4 ,
wherein the vertex processing section performs the first processing which includes calculating a distance between a virtual camera and a vertex of an object; and
wherein the pixel processing section performs the second processing which includes calculating a pixel color by out-scattering and a pixel color by in-scattering and adding the pixel color by out-scattering and the pixel color by in-scattering.
6. The computer-readable storage medium as defined in claim 4 ,
wherein the vertex processing section performs the third processing which includes calculating a vertex color by out-scattering and a vertex color by in-scattering; and
wherein the pixel processing section performs the fourth processing which includes adding a pixel color by out-scattering and a pixel color by in-scattering.
7. The computer-readable storage medium as defined in claim 1 , wherein the predetermined processing is processing of texture coordinates calculation.
8. The computer-readable storage medium as defined in claim 7 ,
wherein the vertex processing section performs the first processing which includes outputting data of a normal vector of a vertex; and
wherein the pixel processing section performs the second processing which includes calculating texture coordinates of a pixel by subjecting a normal vector of the pixel to coordinate transformation and calculating a pixel color by texture mapping using the texture coordinates of the pixel.
9. The computer-readable storage medium as defined in claim 7 ,
wherein the vertex processing section performs the third processing which includes calculating texture coordinates of a vertex by subjecting a normal vector of the vertex to coordinate transformation; and
wherein the pixel processing section performs the fourth processing which includes calculating a pixel color by texture mapping using texture coordinates of a pixel.
10. The computer-readable storage medium as defined in claim 1 , wherein the predetermined processing is lighting processing.
11. The computer-readable storage medium as defined in claim 10 ,
wherein the vertex processing section performs the first processing which includes outputting data of a normal vector of a vertex; and
wherein the pixel processing section performs the second processing which includes calculating light intensity of a pixel based on a normal vector of the pixel and an illumination model and calculating a pixel color based on the light intensity of the pixel.
12. The computer-readable storage medium as defined in claim 10 ,
wherein the vertex processing section performs the third processing including calculating light intensity of a vertex based on a normal vector of the vertex and an illumination model; and
wherein the pixel processing section performs the fourth processing including calculating a pixel color based on light intensity of a pixel.
13. The computer-readable storage medium as defined in claim 1 , wherein the predetermined processing is color conversion processing.
14. The computer-readable storage medium as defined in claim 13 ,
wherein the vertex processing section performs the first processing which includes outputting data of a vertex position and a vertex color; and
wherein the pixel processing section performs the second processing which includes converting a pixel color by using a conversion table or a conversion function.
15. The computer-readable storage medium as defined in claim 13 ,
wherein the vertex processing section performs the third processing which includes converting a vertex color by using a conversion table or a conversion function; and
wherein the pixel processing section performs the fourth processing which includes outputting a pixel color calculated from the converted vertex color.
16. An image generation system for generating an image, the image generation system comprising:
an operation section which allows the input of operation data;
an object space setting section which sets an object in an object space;
a vertex processing section which performs per-vertex processing; and
a pixel processing section which performs per-pixel processing,
wherein, when subjecting an object of a first group to predetermined processing which is implemented by a first processing and a second processing, the vertex processing section performs the first processing with a processing load lower than a processing load of the second processing, and the pixel processing section performs the second processing; and
wherein, when subjecting an object of a second group differing from the first group to the predetermined processing which is implemented by a third processing and a fourth processing, the vertex processing section performs the third processing with a processing load higher than a processing load of the fourth processing, and the pixel processing section performs the fourth processing.
17. The image generation system as defined in claim 16 , wherein the object of the first group is a background object and the object of the second group is a moving object.
18. The image generation system as defined in claim 16 , wherein the object of the second group forms a primitive plane which is smaller than a primitive plane forming the object of the first group.