int checkFramebufferStatus() {
GLenum status;
status = (GLenum) glCheckFramebufferStatus_(GL_FRAMEBUFFER_EXT);
switch(status) {
case GL_FRAMEBUFFER_COMPLETE_EXT:
return 1;
case GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT:
printf("Framebuffer incomplete, incomplete attachment\n");
return 0;
case GL_FRAMEBUFFER_UNSUPPORTED_EXT:
printf("Unsupported framebuffer format\n");
return 0;
case GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT:
printf("Framebuffer incomplete, missing attachment\n");
return 0;
case GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT:
printf("Framebuffer incomplete, attached images must have same dimensions\n");
return 0;
case GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT:
printf("Framebuffer incomplete, attached images must have same format\n");
return 0;
case GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT:
printf("Framebuffer incomplete, missing draw buffer\n");
return 0;
case GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT:
printf("Framebuffer incomplete, missing read buffer\n");
return 0;
}
return 0;
}
GLboolean fbo_create(fbo *F, GLsizei w, GLsizei h)
{
if (gli.framebuffer_object == 0) return GL_FALSE;
F->width = w;
F->height = h;
glGenTextures (1, &F->color_texture);
glGenTextures (1, &F->depth_texture);
glGenFramebuffers_(1, &F->framebuffer);
glBindTexture (GL_TEXTURE_2D, F->color_texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexImage2D (GL_TEXTURE_2D, 0, GL_RGBA8, w, h, 0,
GL_RGBA, GL_UNSIGNED_INT, NULL);
glBindTexture (GL_TEXTURE_2D, F->depth_texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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_DEPTH24_STENCIL8, w, h, 0,
GL_DEPTH_STENCIL, GL_UNSIGNED_INT_24_8, NULL);
glBindFramebuffer_ (GL_FRAMEBUFFER, F->framebuffer);
glFramebufferTexture2D_(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
GL_TEXTURE_2D, F->color_texture, 0);
glFramebufferTexture2D_(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT,
GL_TEXTURE_2D, F->depth_texture, 0);
glFramebufferTexture2D_(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT,
GL_TEXTURE_2D, F->depth_texture, 0);
if (glCheckFramebufferStatus_(GL_FRAMEBUFFER) == GL_FRAMEBUFFER_COMPLETE)
{
glBindFramebuffer_(GL_FRAMEBUFFER, 0);
return GL_TRUE;
}
else
{
glBindFramebuffer_(GL_FRAMEBUFFER, 0);
return GL_FALSE;
}
}
