From 64cb6895be844152e80ae00add3eca3dd873d483 Mon Sep 17 00:00:00 2001
From: John Alanbrook <john@pockle.world>
Date: Sat, 27 Dec 2025 13:15:33 -0600
Subject: [PATCH] wrap

---
 gpu.c   | 36 ++++++++++++++++++++++++++++++++++--
 input.c | 34 ++++++++++++++++++++++++++++------
 sdl.h   |  3 +++
 3 files changed, 65 insertions(+), 8 deletions(-)

diff --git a/gpu.c b/gpu.c
index b5a9794..1b8754f 100644
--- a/gpu.c
+++ b/gpu.c
@@ -3,19 +3,20 @@
 
 #include <SDL3/SDL_gpu.h>
 #include "cell.h"
-
+ 
 // Macro for GPU wrapper classes that need cleanup
 #define QJSCLASSGPUWRAPPER(WRAPPERTYPE, SDLTYPE) \
 typedef struct { \
   SDL_GPUDevice *device; \
   JSValue js_device; \
   SDL_##SDLTYPE *type; \
+  int owned; \
 } WRAPPERTYPE; \
 JSClassID js_SDL_##SDLTYPE##_id; \
 static void js_SDL_##SDLTYPE##_finalizer(JSRuntime *rt, JSValue val) { \
   WRAPPERTYPE *wrapper = JS_GetOpaque(val, js_SDL_##SDLTYPE##_id); \
   JS_FreeValueRT(rt, wrapper->js_device); \
-  if (wrapper && wrapper->device && wrapper->type) \
+  if (wrapper && wrapper->device && wrapper->type && wrapper->owned) \
     SDL_Release##SDLTYPE(wrapper->device, wrapper->type); \
   free(wrapper); \
 } \
@@ -33,6 +34,7 @@ JSValue SDL_##SDLTYPE##2js(JSContext *js, JSValue device, SDL_##SDLTYPE *member)
   wrapper->js_device = JS_DupValue(js,device); \
   wrapper->device = js2SDL_GPUDevice(js, device); \
   wrapper->type = member; \
+  wrapper->owned = 1; \
   JSValue j = JS_NewObjectClass(js, js_SDL_##SDLTYPE##_id); \
   JS_SetOpaque(j, wrapper); \
   return j; \
@@ -1429,6 +1431,35 @@ JSC_CCALL(cmd_swapchain_pass,
   return SDL_GPURenderPass2js(js, renderPass);
 )
 
+JSC_CCALL(cmd_acquire_swapchain_texture,
+  SDL_GPUCommandBuffer *cmdbuf = js2SDL_GPUCommandBuffer(js, self);
+  SDL_Window *window = js2SDL_Window(js, argv[0]);
+  
+  SDL_GPUTexture* swapchainTexture;
+  Uint32 w, h;
+  if (!SDL_WaitAndAcquireGPUSwapchainTexture(cmdbuf, window, &swapchainTexture, &w, &h)) {
+    return JS_ThrowReferenceError(js, "WaitAndAcquireGPUSwapchainTexture failed: %s", SDL_GetError());
+  }
+
+  if (!swapchainTexture) return JS_NULL;
+
+  // Manually construct a non-owning texture wrapper
+  gpu_texture_wrapper *wrapper = malloc(sizeof(gpu_texture_wrapper));
+  wrapper->js_device = JS_NULL; // We don't hold a reference to the JS device
+  wrapper->device = NULL;       // We don't need the device pointer as we don't release
+  wrapper->type = swapchainTexture;
+  wrapper->owned = 0;           // CRITICAL: Do not release this texture
+  
+  JSValue jstex = JS_NewObjectClass(js, js_SDL_GPUTexture_id);
+  JS_SetOpaque(jstex, wrapper);
+  
+  JS_SetPropertyStr(js, jstex, "width", number2js(js, w));
+  JS_SetPropertyStr(js, jstex, "height", number2js(js, h));
+  JS_SetPropertyStr(js, jstex, "dim", vec22js(js, (vec2){w, h}));
+  
+  return jstex;
+)
+
 JSC_CCALL(cmd_compute_pass,
   SDL_GPUCommandBuffer *cmd = js2SDL_GPUCommandBuffer(js,self);
   JSValue textures = argv[0];
@@ -1477,6 +1508,7 @@ static const JSCFunctionListEntry js_SDL_GPUCommandBuffer_funcs[] = {
   MIST_FUNC_DEF(cmd, debug_label, 1),
   MIST_FUNC_DEF(cmd, blit, 1),
   MIST_FUNC_DEF(cmd, swapchain_pass, 2),
+  MIST_FUNC_DEF(cmd, acquire_swapchain_texture, 1),
 };
 
 JSC_CCALL(copypass_end,
diff --git a/input.c b/input.c
index 51b11aa..0e8e76d 100644
--- a/input.c
+++ b/input.c
@@ -2,6 +2,14 @@
 #include "wota.h"
 
 #include <SDL3/SDL.h>
+#include "sdl.h"
+
+void SDL_Event_free(JSRuntime *rt, SDL_Event *e)
+{
+  free(e);
+}
+
+QJSCLASS(SDL_Event,)
 
 // Internal keymod function for input module
 static JSValue js_keymod(JSContext *js)
@@ -750,18 +758,25 @@ JSC_CCALL(input_get_events,
     int event_count = 0;
     
     while (SDL_PollEvent(&event)) {
-//        gui_input(&event);
-        
-        WotaBuffer wb = event2wota(&event);
-        JSValue event_obj = wota2value(js, wb.data);
+        SDL_Event *e = (SDL_Event *)malloc(sizeof(SDL_Event));
+        memcpy(e, &event, sizeof(SDL_Event));
+        JSValue event_obj = SDL_Event2js(js, e);
         JS_SetPropertyUint32(js, events_array, event_count, event_obj);
-        wota_buffer_free(&wb);
         event_count++;
     }
     
     return events_array;
 )
 
+JSC_CCALL(input_objectify,
+  SDL_Event *e = js2SDL_Event(js, argv[0]);
+  if (!e) return JS_ThrowTypeError(js, "Expected SDL_Event object");
+  WotaBuffer wb = event2wota(e);
+  JSValue event_obj = wota2value(js, wb.data);
+  wota_buffer_free(&wb);
+  return event_obj;
+)
+
 JSC_CCALL(input_gamepad_id_to_type,
   int id = js2number(js, argv[0]);
   return JS_NewString(js, SDL_GetGamepadStringForType(SDL_GetGamepadTypeForID(id)));
@@ -774,7 +789,14 @@ static const JSCFunctionListEntry js_input_funcs[] = {
   MIST_FUNC_DEF(input, keymod, 0),
   MIST_FUNC_DEF(input, mousestate, 0),
   MIST_FUNC_DEF(input, get_events, 0),
+  MIST_FUNC_DEF(input, objectify, 1),
   MIST_FUNC_DEF(input, gamepad_id_to_type, 1),
 };
 
-CELL_USE_FUNCS(js_input_funcs)
+CELL_USE_INIT(
+  QJSCLASSPREP_NO_FUNCS(SDL_Event);
+  
+  JSValue mod = JS_NewObject(js);
+  JS_SetPropertyFunctionList(js, mod, js_input_funcs, countof(js_input_funcs));
+  return mod;
+)
diff --git a/sdl.h b/sdl.h
index bde49e0..f79f1f6 100644
--- a/sdl.h
+++ b/sdl.h
@@ -29,6 +29,9 @@ typedef union {
 SDL_Window *js2SDL_Window(JSContext *js, JSValue v);
 JSValue SDL_Window2js(JSContext *js, SDL_Window *w);
 
+SDL_Event *js2SDL_Event(JSContext *js, JSValue v);
+JSValue SDL_Event2js(JSContext *js, SDL_Event *e);
+
 SDL_PixelFormat str2pixelformat(const char *str);
 SDL_PixelFormat js2pixelformat(JSContext *js, JSValue v);
 JSValue pixelformat2js(JSContext *js, SDL_PixelFormat format);