Attachment 12924 Details for Bug 13508 – test case

test case

pxconv-tex.c (text/plain), 3.64 KB, created by WuNian on 2007-12-03 23:52:06 UTC

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Creator: WuNian

Created: 2007-12-03 23:52:06 UTC

Size: 3.64 KB

patch

obsolete

>#include <GL/glut.h>
>#include <stdlib.h>
>#include <stdio.h>
>#include <math.h>
>
>#define WINDSIZEX 100
>#define WINDSIZEY 100
>
>#define TEST_WIDTH      32
>#define TEST_HEIGHT     32
>
>GLubyte *generated;
>GLfloat *expected;
>GLfloat *results;
>
>void GenerateTexture()
>{
>   int totalComponents = TEST_WIDTH * TEST_HEIGHT;
>   int i;
>
>   generated = malloc(totalComponents * 2 * sizeof(GLubyte));
>   expected = malloc(totalComponents * 4 * sizeof(GLfloat));
>
>   for (i = 0; i < totalComponents; i++) {
>      generated[i*2] = i % 255;
>      generated[i*2+1] = i % 255;
>      expected[i*4 + 0] = ((float)generated[i*2]) / 256;
>      expected[i*4 + 1] = ((float)generated[i*2]) / 256;
>      expected[i*4 + 2] = ((float)generated[i*2]) / 256;
>      expected[i*4 + 3] = ((float)generated[i*2+1]) / 256;
>   }
>}
>
>////////////////////////////////////////////////////////////////////////
>static void ClearAll()
>{
>   void *tmp = malloc(TEST_WIDTH * TEST_HEIGHT * 4 * sizeof(GLfloat));
>
>   memset(tmp, 0, TEST_WIDTH * TEST_HEIGHT * 4 * sizeof(GLfloat));
>
>   glTexImage2D(GL_TEXTURE_2D, 0, 1, 
>	 TEST_WIDTH, TEST_HEIGHT, 0, GL_RGBA, GL_FLOAT, tmp);
>   free(tmp);
>}
>
>static void Draw2D(int x, int y)
>{
>   int w = TEST_WIDTH;
>   int h = TEST_HEIGHT;
>   glBegin(GL_POLYGON);
>   glTexCoord2f(0.0, 0.0);
>   glVertex2f(x+0, y+0);
>   glTexCoord2f(0.0, 1.0);
>   glVertex2f(x+0, y+h);
>   glTexCoord2f(1.0, 1.0);
>   glVertex2f(x+w, y+h);
>   glTexCoord2f(1.0, 0.0);
>   glVertex2f(x+w, y+0);
>   glEnd();
>}
>
>
>int Compare()
>{
>   int i;
>
>   for (i=0; i< TEST_WIDTH * TEST_HEIGHT; i++){
>      if (fabs(results[i*4] - expected[i]) > 0.001 ||
>	    fabs(results[i*4+1] - expected[i*4+1]) > 0.001 ||
>	    fabs(results[i*4+2] - expected[i*4+2]) > 0.001 ||
>	    fabs(results[i*4+3] - expected[i*4+3]) > 0.001){
>	 printf ("at: %d\n", i);
>	 printf ("result rgba: %f, %f, %f, %f\n", results[i*4], results[i*4+1], results[i*4+2], results[i*4+3]);
>	 printf ("expected rgba: %f, %f, %f, %f\n", expected[i*4], expected[i*4+1], expected[i*4+2], expected[i*4+3]);
>	 return -1;
>      }
>   }
>
>   return 0;
>}
>
>long TestAll()
>{
>   glClear(GL_COLOR_BUFFER_BIT);
>
>   glEnable(GL_TEXTURE_2D);
>   Draw2D(0,10);
>   glDisable(GL_TEXTURE_2D);
>
>
>   results = malloc (TEST_WIDTH * TEST_HEIGHT * 4 * sizeof(GLfloat));
>   // Compare the 2D test results with the expected results.
>   glReadPixels(0, 10, TEST_WIDTH, TEST_HEIGHT, GL_RGBA, GL_FLOAT,
>	 results);
>//   return Compare();
>   return 0;
>}
>
>void init(void)
>{
>   glDisable(GL_DITHER);
>   glClearColor(1,1,1,1);
>
>   glPixelStorei(GL_PACK_ALIGNMENT, 1);
>   glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
>
>   glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
>   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
>   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
>}
>
>static void test(void)
>{
>   GenerateTexture();
>
>   ClearAll();
>   glTexImage2D(GL_TEXTURE_2D, 0, 1, //internalFormat
>	 TEST_WIDTH, TEST_HEIGHT, 0, GL_LUMINANCE_ALPHA, //format
>	 GL_UNSIGNED_BYTE, //type 
>	 generated);
>
>   if (TestAll() == -1) {
>      ; //exit(1);
>   }
>}
>
>void display(void)
>{
>   glViewport(0, 0, WINDSIZEX, WINDSIZEY);
>   glMatrixMode(GL_PROJECTION);
>   glLoadIdentity();
>   gluOrtho2D(0, WINDSIZEX, 0, WINDSIZEY);
>   glMatrixMode(GL_MODELVIEW);
>   glLoadIdentity();
>
>   test();
>}
>
>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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Attachments on bug 13508: 12924

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