diff options
Diffstat (limited to 'nx-X11/extras/Mesa_6.4.1/progs/tests/zreaddraw.c')
-rw-r--r-- | nx-X11/extras/Mesa_6.4.1/progs/tests/zreaddraw.c | 116 |
1 files changed, 0 insertions, 116 deletions
diff --git a/nx-X11/extras/Mesa_6.4.1/progs/tests/zreaddraw.c b/nx-X11/extras/Mesa_6.4.1/progs/tests/zreaddraw.c deleted file mode 100644 index e2dacbf7f..000000000 --- a/nx-X11/extras/Mesa_6.4.1/progs/tests/zreaddraw.c +++ /dev/null @@ -1,116 +0,0 @@ -/* - * Test glRead/DrawPixels for GL_DEPTH_COMPONENT, with pixelzoom. - * - * Brian Paul - * 23 August 2003 - */ - -#include <stdio.h> -#include <stdlib.h> -#include <math.h> -#define GL_GLEXT_PROTOTYPES -#include <GL/glut.h> - -static GLint WinWidth = 500, WinHeight = 500; - - -static void Display(void) -{ - GLfloat depth[100 * 100]; - GLfloat depth2[400 * 400]; - GLfloat min, max; - int i; - - glClearColor(0.5, 0.5, 0.5, 0); - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); - - /* draw a sphere */ - glViewport(0, 0, 100, 100); - glMatrixMode(GL_PROJECTION); - glLoadIdentity(); - glOrtho(-1, 1, -1, 1, -1, 0); /* clip away back half of sphere */ - glMatrixMode(GL_MODELVIEW); - glLoadIdentity(); - glutSolidSphere(1.0, 20, 10); - - /* read the depth image */ - glReadPixels(0, 0, 100, 100, GL_DEPTH_COMPONENT, GL_FLOAT, depth); - min = max = depth[0]; - for (i = 1; i < 100 * 100; i++) { - if (depth[i] < min) - min = depth[i]; - if (depth[i] > max) - max = depth[i]; - } - printf("Depth value range: [%f, %f]\n", min, max); - - /* draw depth image with scaling (into z buffer) */ - glPixelZoom(4.0, 4.0); - glWindowPos2i(100, 0); - glDrawPixels(100, 100, GL_DEPTH_COMPONENT, GL_FLOAT, depth); - - /* read back scaled depth image */ - glReadPixels(100, 0, 400, 400, GL_DEPTH_COMPONENT, GL_FLOAT, depth2); - /* draw as luminance */ - glPixelZoom(1.0, 1.0); - glDrawPixels(400, 400, GL_LUMINANCE, GL_FLOAT, depth2); - - glutSwapBuffers(); -} - - -static void Reshape(int width, int height) -{ - WinWidth = width; - WinHeight = height; - glViewport(0, 0, width, height); -} - - -static void Key(unsigned char key, int x, int y) -{ - (void) x; - (void) y; - switch (key) { - case 27: - exit(0); - break; - } - glutPostRedisplay(); -} - - -static void Init(void) -{ - const GLfloat blue[4] = {.1, .1, 1.0, 0.0}; - const GLfloat gray[4] = {0.2, 0.2, 0.2, 1.0}; - const GLfloat white[4] = {1.0, 1.0, 1.0, 1.0}; - const GLfloat pos[4] = {0, 0, 10, 0}; - - printf("GL_VERSION = %s\n", (char *) glGetString(GL_VERSION)); - printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER)); - - glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, blue); - glLightfv(GL_LIGHT0, GL_AMBIENT, gray); - glLightfv(GL_LIGHT0, GL_DIFFUSE, white); - glLightfv(GL_LIGHT0, GL_POSITION, pos); - glEnable(GL_LIGHTING); - glEnable(GL_LIGHT0); - glEnable(GL_DEPTH_TEST); -} - - -int main(int argc, char *argv[]) -{ - glutInit(&argc, argv); - glutInitWindowPosition(0, 0); - glutInitWindowSize(WinWidth, WinHeight); - glutInitDisplayMode(GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE); - glutCreateWindow(argv[0]); - glutReshapeFunc(Reshape); - glutKeyboardFunc(Key); - glutDisplayFunc(Display); - Init(); - glutMainLoop(); - return 0; -} |