Attachment 11201 Details for Bug 12092 – test case

test case

texture.c (text/plain), 2.71 KB, created by WuNian on 2007-08-21 20:11:39 UTC

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Creator: WuNian

Created: 2007-08-21 20:11:39 UTC

Size: 2.71 KB

patch

obsolete

>#include <GL/glut.h>
>#include <stdlib.h>
>#include <stdio.h>
>#include <string.h>
>
>#define MAX_TEXTURES 8
>#define WINDSIZEX 100
>#define WINDSIZEY 100
>
>int         imgWidth = 2,  imgHeight = 2; 
>GLuint         texobj;            // Texture object ID.
>GLfloat *outrgb;
>
>GLfloat input[] =
>{0.0967741907, 1, 0.193548381, 0.806451559, 0.129032254, 0.387096763, 
>   0.838709652, 0.612903237, 0.290322572, 0.806451559, 0.129032254, 
>   0.387096763};
>
>GLboolean checkExt(char *extName){
>   return gluCheckExtension(extName, glGetString(GL_EXTENSIONS));
>}
>
>void init(void)
>{
>   int i, j;
>
>   // Check for presence of texture compression extension. 
>   if (! checkExt("GL_ARB_texture_compression")) {
>      exit(2);
>   }
>   if (checkExt("GL_3DFX_texture_compression_FXT1") == GL_FALSE){
>      exit(2);
>   }
>
>   glHint (GL_TEXTURE_COMPRESSION_HINT_ARB, GL_NICEST);
>
>   glDisable(GL_DITHER);
>   glClearColor(1,1,1,1);
>
>   glEnable (GL_TEXTURE_2D);
>   glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
>
>   glGenTextures(1, &texobj);
>   glBindTexture (GL_TEXTURE_2D, texobj);
>
>   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 
>   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
>
>   outrgb   = malloc (3 * WINDSIZEX * WINDSIZEY * sizeof(GLfloat));
>
>   printf("imgWidth is %d, imgHeight is %d\n", imgWidth, imgHeight);
>
>   for (i=0; i<2; i++)
>      for(j=0; j<2; j++)
>      {
>	 int index2 = (j*2+i)*3;
>	 printf("%d, %d   origin img: %f %f %f\n", i, j, input[index2], input[index2+1], input[index2+2]);
>      }
>
>   printf("image format is : GL_COMPRESSED_RGB_FXT1_3DFX\n");
>   glTexImage2D (GL_TEXTURE_2D, 0,
>	 GL_COMPRESSED_RGB_FXT1_3DFX, 2, 2,
>	 0, GL_RGB, GL_FLOAT, input);
>}
>
>void display(void)
>{
>   int i, j;
>
>   glViewport(0, 0, WINDSIZEX, WINDSIZEY);
>   glMatrixMode(GL_PROJECTION);
>   glLoadIdentity();
>   gluOrtho2D(0, WINDSIZEX, 0, WINDSIZEY);
>   glMatrixMode(GL_MODELVIEW);
>   glLoadIdentity();
>
>   glGetTexImage (GL_TEXTURE_2D, 0, GL_RGB, GL_FLOAT, outrgb);
>
>   for (i=0; i<2; i++)
>      for(j=0; j<2; j++)
>      {
>	 int index1 = (j*2+i)*3;
>	 printf("(%d, %d) get img: %f %f %f\n", i, j, outrgb[index1], outrgb[index1+1], outrgb[index1+2]);
>	 printf("         origin img: %f %f %f\n", input[index1], input[index1+1], input[index1+2]);
>      }
>
>   free(outrgb);
>   glDeleteTextures(1, &texobj); 
>   printf("PASS!\n");
>   exit(0);
>}
>
>int main(int argc, char** argv)
>{
>   glutInit(&argc, argv);
>   glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);
>   glutInitWindowSize(WINDSIZEX, WINDSIZEY);
>   glutInitWindowPosition(100, 100);
>   glutCreateWindow(argv[0]);
>   init();
>   glutDisplayFunc(display);
>   glutMainLoop();
>   return 0;
>}
>

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