diff options
author | Brian Paul <brianp@vmware.com> | 2009-06-09 14:03:25 -0600 |
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committer | Brian Paul <brianp@vmware.com> | 2009-06-09 14:05:17 -0600 |
commit | 139f2ddde4fcfdaa7d8bbb86e946274be3733e71 (patch) | |
tree | 4a6e6f547d13f52ffcfaa2a63273d712e50afd53 /progs/tests | |
parent | b38dbc51793b9007de147eff452d535410ef7c55 (diff) |
tests: quick and dirty glGetTexImage() test program
Diffstat (limited to 'progs/tests')
-rw-r--r-- | progs/tests/Makefile | 3 | ||||
-rw-r--r-- | progs/tests/getteximage.c | 123 |
2 files changed, 125 insertions, 1 deletions
diff --git a/progs/tests/Makefile b/progs/tests/Makefile index 628ca41535..1a3ba4f181 100644 --- a/progs/tests/Makefile +++ b/progs/tests/Makefile @@ -48,7 +48,8 @@ SOURCES = \ fptest1.c \ fptexture.c \ getprocaddress.c \ - glutfx \ + getteximage.c \ + glutfx.c \ interleave.c \ invert.c \ jkrahntest.c \ diff --git a/progs/tests/getteximage.c b/progs/tests/getteximage.c new file mode 100644 index 0000000000..c8705d5052 --- /dev/null +++ b/progs/tests/getteximage.c @@ -0,0 +1,123 @@ +/** + * Test glGetTexImage() + * Brian Paul + * 9 June 2009 + */ + + +#include <stdio.h> +#include <stdlib.h> +#include <math.h> +#include <GL/glut.h> + +static int Win; + + +static void +TestGetTexImage(void) +{ + GLuint iter; + + for (iter = 0; iter < 20; iter++) { + GLint p = (iter % 6) + 4; + GLint w = (1 << p); + GLint h = (1 << p); + GLubyte data[512*512*4]; + GLubyte data2[512*512*4]; + GLuint i; + GLint level = 0; + + printf("Testing %d x %d tex image\n", w, h); + /* fill data */ + for (i = 0; i < w * h * 4; i++) { + data[i] = i & 0xff; + data2[i] = 0; + } + + glTexImage2D(GL_TEXTURE_2D, level, GL_RGBA, w, h, 0, + GL_RGBA, GL_UNSIGNED_BYTE, data); + + glBegin(GL_POINTS); + glVertex2f(0, 0); + glEnd(); + + /* get */ + glGetTexImage(GL_TEXTURE_2D, level, GL_RGBA, GL_UNSIGNED_BYTE, data2); + + /* compare */ + for (i = 0; i < w * h * 4; i++) { + if (data2[i] != data[i]) { + printf("Failure!\n"); + abort(); + } + } + } + printf("Passed\n"); + glutDestroyWindow(Win); + exit(0); +} + + +static void +Draw(void) +{ + glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); + + TestGetTexImage(); + + glutSwapBuffers(); +} + + +static void +Reshape(int width, int height) +{ + glViewport(0, 0, width, height); + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + glFrustum(-1.0, 1.0, -1.0, 1.0, 5.0, 25.0); + glMatrixMode(GL_MODELVIEW); + glLoadIdentity(); + glTranslatef(0.0, 0.0, -15.0); +} + + +static void +Key(unsigned char key, int x, int y) +{ + (void) x; + (void) y; + switch (key) { + case 27: + glutDestroyWindow(Win); + exit(0); + break; + } + glutPostRedisplay(); +} + + +static void +Init(void) +{ + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); + glEnable(GL_TEXTURE_2D); +} + + +int +main(int argc, char *argv[]) +{ + glutInit(&argc, argv); + glutInitWindowPosition(0, 0); + glutInitWindowSize(400, 400); + glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH); + Win = glutCreateWindow(argv[0]); + glutReshapeFunc(Reshape); + glutKeyboardFunc(Key); + glutDisplayFunc(Draw); + Init(); + glutMainLoop(); + return 0; +} |