Attachment 17658 Details for Bug 16697 – test case

test case

depth-border.c (text/plain), 2.65 KB, created by WuNian on 2008-07-13 22:01:56 UTC

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Creator: WuNian

Created: 2008-07-13 22:01:56 UTC

Size: 2.65 KB

patch

obsolete

>#include <GL/glut.h>
>#include <stdlib.h>
>#include <stdio.h>
>#include <math.h>
>
>#define WINDSIZEX 100
>#define WINDSIZEY 100
>
>
>void init(void)
>{
>   glDisable(GL_DITHER);
>   glClearColor(0.0, 0.0, 0.0, 1.0);
>}
>
>static void TextureTest()
>{
>   unsigned char t[] = {255, 63};
>   GLuint texID;
>   GLfloat bcolor [] = {0.5, 0.0, 0.0, 0.75 }; //1.0 };
>
>   glGenTextures(1, &texID);
>   glBindTexture(GL_TEXTURE_1D, texID);
>
>   glEnable(GL_TEXTURE_1D);
>
>   glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
>   glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
>   glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
>   glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
>   glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
>
>   glTexParameteri(GL_TEXTURE_1D, GL_DEPTH_TEXTURE_MODE, GL_ALPHA);
>   glTexImage1D(GL_TEXTURE_1D, 0, GL_DEPTH_COMPONENT, 2, 0,
>	 GL_DEPTH_COMPONENT, GL_FLOAT, (void*)t);
>
>   glTexParameterfv(GL_TEXTURE_1D, GL_TEXTURE_BORDER_COLOR, bcolor);
>
>   glClear(GL_COLOR_BUFFER_BIT);
>
>   glDisable(GL_TEXTURE_1D);
>   glColor3f(1.0, 1.0, 1.0);
>
>   glBegin(GL_QUAD_STRIP);
>   glTexCoord2f(-0.5, -0.5);
>   glVertex2i(20, 20);
>   glTexCoord2f(-0.5, 1.5);
>   glVertex2i(20, 60);
>   glTexCoord2f(1.5, -0.5);
>   glVertex2i(60, 20);
>   glTexCoord2f(1.5, 1.5);
>   glVertex2i(60, 60);
>   glEnd();
>
>   glEnable(GL_TEXTURE_1D);
>   glBegin(GL_QUAD_STRIP);
>   glTexCoord2f(-0.5, -0.5);
>   glVertex2i(20, 20);
>   glTexCoord2f(-0.5, 1.5);
>   glVertex2i(20, 60);
>   glTexCoord2f(1.5, -0.5);
>   glVertex2i(60, 20);
>   glTexCoord2f(1.5, 1.5);
>   glVertex2i(60, 60);
>   glEnd();
>
>   glDisable(GL_TEXTURE_1D);
>}
>
>static void test(void)
>{    
>   GLfloat buf[4];
>
>   glClear(GL_COLOR_BUFFER_BIT);
>   glColor3f(1.0, 1.0, 1.0);
>
>   TextureTest();
>
>   //   glReadPixels(35, 50, 1, 1, GL_RGBA, GL_FLOAT, buf);
>   //   printf("draw pixel at (35, 50): %f %f %f %f, the alpha component should be 0.5\n", buf[0], buf[1], buf[2], buf[3]);
>
>   glReadPixels(20, 20, 1, 1, GL_RGBA, GL_FLOAT, buf);
>   printf("draw pixel at (20, 20): %f %f %f %f, the alpha component should be 0.5\n", buf[0], buf[1], buf[2], buf[3]);
>}
>
>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); // | GLUT_DEPTH);
>   glutInitWindowSize(WINDSIZEX, WINDSIZEY);
>   glutInitWindowPosition(100, 100);
>   glutCreateWindow(argv[0]);
>   init();
>   glutDisplayFunc(display);
>   glutMainLoop();
>   return 0; 
>
>}

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Attachments on bug 16697: 17658

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