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/*
* Copyright 2018 The Emscripten Authors. All rights reserved.
* Emscripten is available under two separate licenses, the MIT license and the
* University of Illinois/NCSA Open Source License. Both these licenses can be
* found in the LICENSE file.
*/
#include <EGL/egl.h>
#include <GLES2/gl2.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
int check_equal(int expected, int actual)
{
if (expected == actual) {
printf("ok\n");
return 1;
} else {
printf("error: expected = %d, actual = %d\n", expected, actual);
return 0;
}
}
int main()
{
EGLDisplay dpy;
EGLint dpy_attrib_list[] = {
EGL_CONFORMANT, EGL_OPENGL_ES2_BIT,
EGL_DEPTH_SIZE, 16,
EGL_NONE
};
EGLConfig *configs;
EGLint num_config;
EGLNativeWindowType win;
EGLSurface surface;
EGLContext ctx;
EGLint ctx_attrib_list[] = {
EGL_CONTEXT_CLIENT_VERSION, 2,
EGL_NONE
};
dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
eglInitialize(dpy, NULL, NULL);
eglChooseConfig(dpy, dpy_attrib_list, NULL, 0, &num_config);
configs = malloc(sizeof(EGLConfig) * num_config);
eglChooseConfig(dpy, dpy_attrib_list, configs, num_config, &num_config);
memset(&win, 0, sizeof(EGLNativeWindowType));
#if defined(__EMSCRIPTEN__)
// Simply skip window creation because the handle is ignored by Emscripten.
#else
#error not implemented
#endif
surface = eglCreateWindowSurface(dpy, configs[0], win, NULL);
ctx = eglCreateContext(dpy, configs[0], EGL_NO_CONTEXT, ctx_attrib_list);
eglMakeCurrent(dpy, surface, surface, ctx);
GLuint fbo;
GLuint tex;
GLuint rbo;
glGenFramebuffers(1, &fbo);
glBindFramebuffer(GL_FRAMEBUFFER, fbo);
glGenTextures(1, &tex);
glBindTexture(GL_TEXTURE_CUBE_MAP, tex);
for (int i = 0; i < 6; i++) {
glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, GL_RGB, 256, 256, 0, GL_RGB, GL_UNSIGNED_BYTE, NULL);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
}
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_CUBE_MAP_POSITIVE_X, tex, 0);
glGenRenderbuffers(1, &rbo);
glBindRenderbuffer(GL_RENDERBUFFER, rbo);
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT16, 256, 256);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, rbo);
GLint params;
int result = 1;
printf("check type of GL_COLOR_ATTACHMENT0\n");
glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE, ¶ms);
result &= check_equal(GL_TEXTURE, params);
printf("check type of GL_DEPTH_ATTACHMENT\n");
glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE, ¶ms);
result &= check_equal(GL_RENDERBUFFER, params);
printf("check name of GL_COLOR_ATTACHMENT0\n");
glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME, ¶ms);
result &= check_equal(tex, params);
printf("check name of GL_DEPTH_ATTACHMENT\n");
glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME, ¶ms);
result &= check_equal(rbo, params);
printf("check mipmap level of GL_COLOR_ATTACHMENT0\n");
glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL, ¶ms);
result &= check_equal(0, params);
printf("check cube map face of GL_COLOR_ATTACHMENT0\n");
glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE, ¶ms);
result &= check_equal(GL_TEXTURE_CUBE_MAP_POSITIVE_X, params);
eglMakeCurrent(dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
eglDestroyContext(dpy, ctx);
eglDestroySurface(dpy, surface);
#if defined(__EMSCRIPTEN__)
// No window needs to be closed/destroyed.
#else
#error not implemented
#endif
free(configs);
eglTerminate(dpy);
#ifdef REPORT_RESULT
REPORT_RESULT(result);
#endif
return 0;
}
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