Add render pipeline customization

1 files changed, 29 insertions, 0 deletions

diff --git a/src/daw.c b/src/daw.c
index 163f484..fa607f0 100644
--- a/src/daw.c
+++ b/src/daw.c
@@ -171,9 +171,24 @@ i32 engine_run(Instance* p, StateType initial_state, void* state_arg) {
 
   StateType state = initial_state;
 
+  Window* w = p->window;
+
   {
     u64 state_init_time = get_time();
     State_init(state, mem, state_arg);
+    if (!w->render_targets) {
+      // Create only 1 additional framebuffer, in addition to the default
+      // one. This is used to render a texture that is represented as a quad
+      // on the default framebuffer.
+      FramebufferParameters p[] = {
+        {.num_attached_buffers = 1, {200,200}},
+      };
+      u32 t[] = {
+        BUFFERPARAMETER_SET_PARAMETER(BUFFERPARAMETER_SET_TYPE(0, BufferType_texture), BUFFERPARAMETER_TEXTURE_2D)
+      };
+      window_init_renderstack(w, 1, 1, p, t);
+      w->render_targets->cam[0] = default_camera;
+    }
     INFO("Initializing state \"%s\" took %.1fns", StateTypeStr[state],
          (get_time() - state_init_time));
   }
@@ -222,12 +237,26 @@ i32 engine_run(Instance* p, StateType initial_state, void* state_arg) {
 
       // Reset camera to default camera
       p->cam = &default_camera;
+      free(w->render_targets);
 
       state = next_state;
       update_func = State_updateFunc(state);
       {
         u64 state_init_time = get_time();
         State_init(state, mem, retval);
+        if (!w->render_targets) {
+          // Create only 1 additional framebuffer, in addition to the default
+          // one. This is used to render a texture that is represented as a quad
+          // on the default framebuffer.
+          FramebufferParameters p[] = {
+            {.num_attached_buffers = 1, {200,200}},
+          };
+          u32 t[] = {
+            BUFFERPARAMETER_SET_PARAMETER(BUFFERPARAMETER_SET_TYPE(0, BufferType_texture), BUFFERPARAMETER_TEXTURE_2D)
+          };
+          window_init_renderstack(w, 1, 1, p, t);
+          w->render_targets->cam[0] = default_camera;
+        }
         INFO("Initializing state \"%s\" took %.1fns", StateTypeStr[state],
              (get_time() - state_init_time));
       }