/*
* This automatically manages FBOs so that render targets are always given
* an FBO that matches their width/height/format to maximize optimization
*/
static struct fbo_info *get_fbo(struct gs_device *device, texture_t tex)
{
size_t i;
uint32_t width, height;
GLuint fbo;
struct fbo_info *ptr;
if (!get_tex_dimensions(tex, &width, &height))
return NULL;
for (i = 0; i < device->fbos.num; i++) {
ptr = device->fbos.array[i];
if (ptr->width == width && ptr->height == height &&
ptr->format == tex->format)
return ptr;
}
glGenFramebuffers(1, &fbo);
if (!gl_success("glGenFramebuffers"))
return NULL;
ptr = bmalloc(sizeof(struct fbo_info));
ptr->fbo = fbo;
ptr->width = width;
ptr->height = height;
ptr->format = tex->format;
ptr->cur_render_target = NULL;
ptr->cur_render_side = 0;
ptr->cur_zstencil_buffer = NULL;
da_push_back(device->fbos, &ptr);
return ptr;
}
static inline struct fbo_info *get_fbo_by_tex(struct gs_device *device,
gs_texture_t tex)
{
uint32_t width, height;
if (!get_tex_dimensions(tex, &width, &height))
return NULL;
return get_fbo(device, width, height, tex->format);
}
