fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2026-05-04 22:49:13 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions 2

tests: also test glGetTexImage with render to texture

Browse source 
Also, adjust texture dims for the original test.
And use GLEW.
This commit is contained in:
Brian Paul 2009-06-09 15:05:36 -06:00
parent 139f2ddde4
commit 073c20befa
1 changed files with 103 additions and 11 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

114
progs/tests/getteximage.c
View file

@ -8,6 +8,7 @@
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <GL/glew.h>
#include <GL/glut.h>
static int Win;
@ -17,17 +18,22 @@ static void
TestGetTexImage(void)
{
GLuint iter;
GLubyte *data = (GLubyte *) malloc(1024 * 1024 * 4);
GLubyte *data2 = (GLubyte *) malloc(1024 * 1024 * 4);
for (iter = 0; iter < 20; iter++) {
GLint p = (iter % 6) + 4;
glEnable(GL_TEXTURE_2D);
printf("glTexImage2D + glGetTexImage:\n");
for (iter = 0; iter < 8; iter++) {
GLint p = (iter % 8) + 3;
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);
printf(" Testing %d x %d tex image\n", w, h);
/* fill data */
for (i = 0; i < w * h * 4; i++) {
data[i] = i & 0xff;
@ -47,17 +53,100 @@ TestGetTexImage(void)
/* compare */
for (i = 0; i < w * h * 4; i++) {
if (data2[i] != data[i]) {
printf("Failure!\n");
printf("glTexImage + glGetTexImage failure!\n");
printf("Expected value %d, found %d\n", data[i], data2[i]);
abort();
}
}
}
printf("Passed\n");
glutDestroyWindow(Win);
exit(0);
glDisable(GL_TEXTURE_2D);
free(data);
free(data2);
}
static GLboolean
ColorsEqual(const GLubyte ref[4], const GLubyte act[4])
{
if (abs((int) ref[0] - (int) act[0]) > 1 ||
abs((int) ref[1] - (int) act[1]) > 1 ||
abs((int) ref[2] - (int) act[2]) > 1 ||
abs((int) ref[3] - (int) act[3]) > 1) {
printf("expected %d %d %d %d\n", ref[0], ref[1], ref[2], ref[3]);
printf("found %d %d %d %d\n", act[0], act[1], act[2], act[3]);
return GL_FALSE;
}
return GL_TRUE;
}
static void
TestGetTexImageRTT(void)
{
GLuint iter;
GLuint fb, tex;
GLint w = 512;
GLint h = 256;
GLint level = 0;
glGenTextures(1, &tex);
glGenFramebuffersEXT(1, &fb);
glBindTexture(GL_TEXTURE_2D, tex);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0,
GL_RGBA, GL_UNSIGNED_BYTE, NULL);
glBindFramebuffer(GL_FRAMEBUFFER_EXT, fb);
glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
GL_TEXTURE_2D, tex, level);
printf("Render to texture + glGetTexImage:\n");
printf(" Testing %d x %d tex image\n", w, h);
for (iter = 0; iter < 8; iter++) {
GLubyte color[4];
GLubyte *data2 = (GLubyte *) malloc(w * h * 4);
GLuint i;
/* random clear color */
for (i = 0; i < 4; i++) {
color[i] = rand() % 256;
}
glClearColor(color[0] / 255.0,
color[1] / 255.0,
color[2] / 255.0,
color[3] / 255.0);
glClear(GL_COLOR_BUFFER_BIT);
/* get */
glGetTexImage(GL_TEXTURE_2D, level, GL_RGBA, GL_UNSIGNED_BYTE, data2);
/* compare */
for (i = 0; i < w * h; i += 4) {
if (!ColorsEqual(color, data2 + i * 4)) {
printf("Render to texture failure!\n");
abort();
}
}
free(data2);
}
glBindFramebuffer(GL_FRAMEBUFFER_EXT, 0);
glDeleteFramebuffersEXT(1, &fb);
glDeleteTextures(1, &tex);
printf("Passed\n");
}
static void
Draw(void)
{
@ -65,6 +154,11 @@ Draw(void)
TestGetTexImage();
TestGetTexImageRTT();
glutDestroyWindow(Win);
exit(0);
glutSwapBuffers();
}
@ -100,9 +194,6 @@ Key(unsigned char key, int x, int y)
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);
}
@ -114,6 +205,7 @@ main(int argc, char *argv[])
glutInitWindowSize(400, 400);
glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);
Win = glutCreateWindow(argv[0]);
glewInit();
glutReshapeFunc(Reshape);
glutKeyboardFunc(Key);
glutDisplayFunc(Draw);