Attachment 9027 Details for Bug 10219 – test case

test case

texture_lod.c (text/plain), 3.89 KB, created by Wei Wang on 2007-03-07 18:05:51 UTC

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Creator: Wei Wang

Created: 2007-03-07 18:05:51 UTC

Size: 3.89 KB

patch

obsolete

>#include "GL/glut.h"
>#include <string.h>
>#include <stdio.h>
>#include <unistd.h>
>#include <stdlib.h>
>
>#define WIN_WIDTH 128
>#define WIN_HEIGHT 128
>#define SQUARE_SIDE 64
>#define MY_MIN_LOD 100
>
>GLfloat mipmapImage64[64][64][3];
>GLfloat mipmapImage32[32][32][3];
>GLfloat mipmapImage16[16][16][3];
>GLfloat mipmapImage8[8][8][3];
>GLfloat mipmapImage4[4][4][3];
>GLfloat mipmapImage2[2][2][3];
>GLfloat mipmapImage1[1][1][3];
>GLfloat buf[64*64*3];
>
>
>void makeImages(void)
>{
>	int i, j;
>
>	for (i = 0; i < 64; i++) {
>		for (j = 0; j < 64; j++) {
>			mipmapImage64[i][j][0] = 0.64;
>			mipmapImage64[i][j][1] = 0.0;
>			mipmapImage64[i][j][2] = 0.0;
>		}
>	}
>
>	for (i = 0; i < 32; i++) {
>		for (j = 0; j < 32; j++) {
>			mipmapImage32[i][j][0] = 0.32;
>			mipmapImage32[i][j][1] = 0.0;
>			mipmapImage32[i][j][2] = 0.0;
>		}
>	}
>	for (i = 0; i < 16; i++) {
>		for (j = 0; j < 16; j++) {
>			mipmapImage16[i][j][0] = 0.16;
>			mipmapImage16[i][j][1] = 0.0;
>			mipmapImage16[i][j][2] = 0.0;
>		}
>	}
>	for (i = 0; i < 8; i++) {
>		for (j = 0; j < 8; j++) {
>			mipmapImage8[i][j][0] = 0.8;
>			mipmapImage8[i][j][1] = 0.0;
>			mipmapImage8[i][j][2] = 0.0;
>		}
>	}
>
>	for (i = 0; i < 4; i++) {
>		for (j = 0; j < 4; j++) {
>			mipmapImage4[i][j][0] = 0.4;
>			mipmapImage4[i][j][1] = 0.0;
>			mipmapImage4[i][j][2] = 0.0;
>		}
>	}
>
>	for (i = 0; i < 2; i++) {
>		for (j = 0; j < 2; j++) {
>			mipmapImage2[i][j][0] = 0.2;
>			mipmapImage2[i][j][1] = 0.0;
>			mipmapImage2[i][j][2] = 0.0;
>		}
>	}
>
>	mipmapImage1[0][0][0] = 0.1;
>	mipmapImage1[0][0][1] = 0.0;
>	mipmapImage1[0][0][2] = 0.0;
>}
>
>
>static GLuint texName;
>
>void init()
>{
>	int i;
>	
>	for (i = 0; i < 64*64*3; i ++)
>		buf[i]=2.2;	//init w/ invalid value
>	
>	glMatrixMode(GL_PROJECTION);
>	glLoadIdentity();
>	glTranslatef(-1.0, -1.0, 0.0);
>	glScalef(2.0/WIN_WIDTH, 2.0/WIN_HEIGHT, 1.0);
>
>	glClearColor(0, 0, 0, 0);
>	glDisable(GL_DITHER);
>	glEnable(GL_TEXTURE_2D);
>	makeImages();
>
>	glGenTextures(1, &texName);
>	glBindTexture(GL_TEXTURE_2D, texName);
>
>	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, 
>		GL_NEAREST);
>	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, 
>		GL_NEAREST_MIPMAP_NEAREST);
>
>	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 64, 64, 0,
>		GL_RGB, GL_FLOAT, mipmapImage64);
>	glTexImage2D(GL_TEXTURE_2D, 1, GL_RGB, 32, 32, 0,
>		GL_RGB, GL_FLOAT, mipmapImage32);
>	glTexImage2D(GL_TEXTURE_2D, 2, GL_RGB, 16, 16, 0,
>		GL_RGB, GL_FLOAT, mipmapImage16);
>	glTexImage2D(GL_TEXTURE_2D, 3, GL_RGB, 8, 8, 0,
>		GL_RGB, GL_FLOAT, mipmapImage4);
>	glTexImage2D(GL_TEXTURE_2D, 4, GL_RGB, 4, 4, 0,
>		GL_RGB, GL_FLOAT, mipmapImage4);
>	glTexImage2D(GL_TEXTURE_2D, 5, GL_RGB, 2, 2, 0,
>		GL_RGB, GL_FLOAT, mipmapImage2);
>	glTexImage2D(GL_TEXTURE_2D, 6, GL_RGB, 1, 1, 0,
>		GL_RGB, GL_FLOAT, mipmapImage1);
>
>	glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
>}
>
>void display()
>{
>	GLint ret_size;
>	int i;
>
>	glClear(GL_COLOR_BUFFER_BIT);
>
>	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 1);
>	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 1000);
>	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_LOD, MY_MIN_LOD);
>	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LOD, 1000);
>	glBegin(GL_POLYGON);
>		glTexCoord2f(0.0, 0.0);
>		glVertex2i(0, 0);
>		glTexCoord2f(0.0, 1.0);
>		glVertex2i(0, SQUARE_SIDE);
>		glTexCoord2f(1.0, 1.0);
>		glVertex2i(SQUARE_SIDE, SQUARE_SIDE);
>		glTexCoord2f(1.0, 0.0);
>		glVertex2i(SQUARE_SIDE, 0);
>	glEnd();
>
>	glReadPixels(0, 0, SQUARE_SIDE, SQUARE_SIDE, GL_RGB, GL_FLOAT, buf);
>	for (i = 0; i < SQUARE_SIDE *SQUARE_SIDE*3; i+=3) {
>		printf("R[%1.1f], G[%1.1f], B[%1.1f] \n", 
>			buf[i], buf[i+1], buf[i+2]);
>	}
>}
>
>
>int main(int argc, char** argv)
>{
>	glutInit(&argc, argv);
>	glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB);
>	glutInitWindowSize (WIN_WIDTH, WIN_HEIGHT);
>	glutInitWindowPosition (100, 100);
>	glutCreateWindow ("hello");
>	init();
>	glutDisplayFunc(display);
>	glutMainLoop();
>}

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Attachments on bug 10219: 9027 | 9211

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