Attachment 16862 Details for Bug 16191 – test case

test case

tex.c (text/plain), 3.04 KB, created by WuNian on 2008-06-02 00:09:17 UTC

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Creator: WuNian

Created: 2008-06-02 00:09:17 UTC

Size: 3.04 KB

patch

obsolete

>#include "GL/glut.h"
>#include <string.h>
>#include <stdio.h>
>#include <unistd.h>
>#include <stdlib.h>
>
>#define WINDSIZEX 100
>#define WINDSIZEY 100
>
>#define TEXSIZE 64
>
>
>static GLfloat buf1[3];               // Buffers for reading screen
>
>static GLfloat *rgbRasPosTexture;
>
>static GLuint  texImages;
>
>static GLfloat mMap[] = {
>    1.0, 0.0, 0.0, 0.0,
>    0.0, 1.0, 0.0, 0.0,
>    1.0, 1.0, 0.0, 0.0,
>    0.0, 0.0, 0.0, 1.0,
>};
>
>static GLfloat mScale[] = {
>    1.0/64.0,      0.0, 0.0, 0.0,
>    0.0,      1.0/64.0, 0.0, 0.0,
>    0.0,           0.0, 0.0, 0.0,
>    0.0,           0.0, 0.0, 1.0,
>};
>
>#define RASPOSX             (22)
>#define RASPOSY             (36)
>
>static void CreateRasterPosTexture(void)
>{
>   GLint   x, y;
>   GLfloat *prgb = rgbRasPosTexture;
>
>   for (y = 0; y < TEXSIZE; y++) {
>      for (x = 0; x < TEXSIZE; x++) {
>	 if ((x == RASPOSX)&&(y == 0)) {
>	    *prgb++ = 0.0;
>	    *prgb++ = 1.0;
>	    *prgb++ = 0.0;
>	 } else if ((x == RASPOSX)&&(y == RASPOSY)) {
>	    *prgb++ = 1.0;
>	    *prgb++ = 0.0;
>	    *prgb++ = 0.0;
>	 } else {
>	    *prgb++ = 0.0;
>	    *prgb++ = 0.0;
>	    *prgb++ = 1.0;
>	 }
>      }
>   }
>}
>
>void init()
>{
>   glDisable(GL_DITHER);
>
>   glClearColor (0.0, 0.0, 0.0, 0.0);
>
>   // Allocate memory for creating the ramp tecture
>   rgbRasPosTexture = (GLfloat *)malloc(TEXSIZE*TEXSIZE*3*sizeof(GLfloat));
>
>   glGenTextures(1, &texImages);     
>
>
>   glBindTexture (GL_TEXTURE_2D, texImages);
>
>   glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
>   glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
>   glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
>   glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
>
>   CreateRasterPosTexture ();
>   glTexImage2D (GL_TEXTURE_2D, 0, GL_RGB, TEXSIZE, TEXSIZE,
>	 0, GL_RGB, GL_FLOAT, rgbRasPosTexture);
>
>   glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
>
>   glEnable (GL_TEXTURE_2D);
>
>    glMatrixMode (GL_TEXTURE);
>    glLoadIdentity ();
>    glLoadMatrixf (mScale);
>    glMultMatrixf (mMap);
>
>}
>
>long Test (GLint x1, GLint y1)
>{
>   glReadPixels(x1, y1, 1, 1, GL_RGB, GL_FLOAT, buf1);
>   printf ("pixel color: %f %f %f\n", buf1[0], buf1[1], buf1[2]);
>   return 0;
>}
>
>#define X1   4
>#define Y1   4
>
>void test(){
>   GLubyte bitmap[] = {0xFF};
>   glClear (GL_COLOR_BUFFER_BIT);
>
>   glNewList (1, GL_COMPILE_AND_EXECUTE);
>//   glNewList (1, GL_COMPILE);
>   glBindTexture (GL_TEXTURE_2D, texImages);
>   glTexCoord1d (22.0); 
>   glRasterPos2f (X1 + 0.25, Y1 + 0.25);
>   glBitmap (1, 1, 0.0, 0.0, 0.0, 0.0, bitmap);
>
>   glEndList();
>//   glCallList(1);
>   Test (X1, Y1);
>}
>
>void display()
>{
>   glViewport(0, 0, WINDSIZEX, WINDSIZEY);
>   glMatrixMode(GL_PROJECTION);
>   glLoadIdentity();
>   gluOrtho2D(0, WINDSIZEY, 0, WINDSIZEX);
>   glMatrixMode(GL_MODELVIEW);
>   glLoadIdentity();
>
>   test();
>}
>
>int main(int argc, char** argv)
>{
>   glutInit(&argc, argv);
>   glutInitDisplayMode (GLUT_SINGLE | GLUT_RGBA);
>   glutInitWindowSize (WINDSIZEX, WINDSIZEY);
>   glutInitWindowPosition (100, 100);
>   glutCreateWindow ("hello");
>   init();
>   glutDisplayFunc(display);
>   glutMainLoop();
>}

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Attachments on bug 16191: 16862

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