static void say_buffer_make_current(say_buffer *buf) {
say_context *context = say_context_current();
if (context->buffer_obj != buf) {
say_buffer_setup_pointer(buf);
context->buffer_obj = buf;
}
}
static void say_vbo_make_current(GLuint vbo) {
say_context *context = say_context_current();
if (context->vbo != vbo) {
glBindBuffer(GL_ARRAY_BUFFER, vbo);
context->vbo = vbo;
}
}
static void say_buffer_delete_vao_pair(say_vao_pair *pair) {
say_context *context = say_context_current();
if (context == pair->context && context->vao == pair->vao) {
glDeleteVertexArrays(1, &pair->vao);
say_index_buffer_rebind();
context->vao = 0;
}
}
static void say_vao_make_current(GLuint vao) {
say_context *context = say_context_current();
if (context->vao != vao) {
glBindVertexArray(vao);
say_index_buffer_rebind();
context->vao = vao;
}
}
void say_fbo_make_current(GLuint fbo) {
say_context *context = say_context_current();
if (context != say_fbo_last_context ||
fbo != say_current_fbo) {
say_current_fbo = fbo;
say_fbo_last_context = context;
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo);
}
}
void say_rbo_make_current(GLuint rbo) {
say_context *context = say_context_current();
if (context != say_rbo_last_context ||
rbo != say_current_rbo) {
say_current_rbo = rbo;
say_rbo_last_context = context;
glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, rbo);
}
}
static GLuint say_buffer_get_vao(say_buffer *buf) {
say_context *ctxt = say_context_current();
if (!mo_hash_has_key(buf->vaos, &ctxt)) {
say_vao_pair pair;
pair.context = ctxt;
glGenVertexArrays(1, &pair.vao);
say_buffer_build_vao(buf, pair.vao);
mo_hash_set(buf->vaos, &ctxt, &pair);
return pair.vao;
}
else {
return mo_hash_get_ptr(buf->vaos, &ctxt, say_vao_pair)->vao;
}
}