fix gpu

examples/lenna.ce

@@ -13,7 +13,7 @@ var render = use('render')
 var surface = use('surface')
 var events = use('events')
 var keyboard = use('keyboard')
-var png = use('gitea.pockle.world/john/cell-image/png')
+var png = use('/Users/john/work/cell-image/png')
 var time = use('time')
 
 // Create window

gpu.c

@@ -438,6 +438,8 @@ JS2ENUM(SDL_GPUTextureFormat)
 SDL_GPUColorTargetBlendState js2SDL_GPUColorTargetBlendState(JSContext *js, JSValue v)
 {
   SDL_GPUColorTargetBlendState state = {0};
+  if (!JS_IsObject(v))
+    return state;
   JS_GETPROP(js,state.src_color_blendfactor,v,src_rgb,SDL_GPUBlendFactor);
   JS_GETPROP(js,state.dst_color_blendfactor,v,dst_rgb,SDL_GPUBlendFactor);
   JS_GETPROP(js,state.src_alpha_blendfactor,v,src_alpha,SDL_GPUBlendFactor);
@@ -522,6 +524,9 @@ SDL_GPUStencilOpState js2SDL_GPUStencilOpState(JSContext *js, JSValue v)
   SDL_GPUStencilOpState state;
   memset(&state, 0, sizeof(state));
 
+  if (!JS_IsObject(v))
+    return state;
+
   JSValue compare_val = JS_GetPropertyStr(js, v, "compare");
   if(!JS_IsNull(compare_val)) state.compare_op = js2SDL_GPUCompareOp(js, compare_val);
   JS_FreeValue(js, compare_val);
@@ -1352,18 +1357,69 @@ JSC_CCALL(cmd_swapchain_pass,
   if (swapchainTexture == NULL) {
     return JS_ThrowReferenceError(js, "Failed to acquire swapchain texture");
   }
-  
-  SDL_GPUColorTargetInfo colorTargetInfo = { 0 };
+
+  if (argc > 1 && JS_IsObject(argv[1])) {
+    JSValue passObj = argv[1];
+
+    JSValue colorTargetsVal = JS_GetPropertyStr(js, passObj, "color_targets");
+    if (!JS_IsArray(js, colorTargetsVal)) {
+      JS_FreeValue(js, colorTargetsVal);
+      return JS_ThrowTypeError(js, "swapchain_pass: color_targets must be an array");
+    }
+
+    uint32_t colorCount = JS_ArrayLength(js, colorTargetsVal);
+    if (colorCount != 1) {
+      JS_FreeValue(js, colorTargetsVal);
+      return JS_ThrowTypeError(js, "swapchain_pass: only 1 color target is supported");
+    }
+
+    JSValue ctargetVal = JS_GetPropertyUint32(js, colorTargetsVal, 0);
+    SDL_GPUColorTargetInfo colorTargetInfo = js2SDL_GPUColorTargetInfo(js, ctargetVal);
+    JS_FreeValue(js, ctargetVal);
+    JS_FreeValue(js, colorTargetsVal);
+
+    colorTargetInfo.texture = swapchainTexture;
+
+    SDL_GPUDepthStencilTargetInfo depthtar;
+    int has_depth = 0;
+
+    JSValue depthval = JS_GetPropertyStr(js, passObj, "depth_stencil");
+    if (JS_IsObject(depthval)) {
+      has_depth = 1;
+      JS_GETPROP(js, depthtar.texture, depthval, texture, SDL_GPUTexture)
+      JS_GETPROP(js, depthtar.load_op, depthval, load, SDL_GPULoadOp)
+      JS_GETPROP(js, depthtar.store_op, depthval, store, SDL_GPUStoreOp)
+      JS_GETPROP(js, depthtar.stencil_load_op, depthval, stencil_load, SDL_GPULoadOp)
+      JS_GETPROP(js, depthtar.stencil_store_op, depthval, stencil_store, SDL_GPUStoreOp)
+      JS_GETPROP(js, depthtar.clear_depth, depthval, clear, number)
+      JS_GETPROP(js, depthtar.clear_stencil, depthval, clear_stencil, number)
+    }
+    JS_FreeValue(js, depthval);
+
+    SDL_GPURenderPass* renderPass = SDL_BeginGPURenderPass(
+      cmdbuf,
+      &colorTargetInfo,
+      1,
+      has_depth ? &depthtar : NULL
+    );
+    if (!renderPass) {
+      return JS_ThrowReferenceError(js, "Failed to begin render pass: %s", SDL_GetError());
+    }
+
+    return SDL_GPURenderPass2js(js, renderPass);
+  }
+
+  SDL_GPUColorTargetInfo colorTargetInfo = {0};
   colorTargetInfo.texture = swapchainTexture;
-  colorTargetInfo.clear_color = (SDL_FColor){ 0.0f, 0.0f, 0.0f, 1.0f };
+  colorTargetInfo.clear_color = (SDL_FColor){0.0f, 0.0f, 0.0f, 1.0f};
   colorTargetInfo.load_op = SDL_GPU_LOADOP_CLEAR;
   colorTargetInfo.store_op = SDL_GPU_STOREOP_STORE;
-  
+
   SDL_GPURenderPass* renderPass = SDL_BeginGPURenderPass(cmdbuf, &colorTargetInfo, 1, NULL);
   if (!renderPass) {
     return JS_ThrowReferenceError(js, "Failed to begin render pass: %s", SDL_GetError());
   }
-  
+
   return SDL_GPURenderPass2js(js, renderPass);
 )
 
@@ -1414,7 +1470,7 @@ static const JSCFunctionListEntry js_SDL_GPUCommandBuffer_funcs[] = {
   MIST_FUNC_DEF(cmd, pop_debug_group, 0),
   MIST_FUNC_DEF(cmd, debug_label, 1),
   MIST_FUNC_DEF(cmd, blit, 1),
-  MIST_FUNC_DEF(cmd, swapchain_pass, 1),
+  MIST_FUNC_DEF(cmd, swapchain_pass, 2),
 };
 
 JSC_CCALL(copypass_end,