keep backbuffer at monitor size

src/gpu/gpu_core.h

@@ -351,10 +351,12 @@ Struct(GPU_Scissor)
 ////////////////////////////////////////////////////////////
 //~ Memory info types
 
-Struct(GPU_MemoryInfo)
+Struct(GPU_MemoryStats)
 {
-    u64 local_used;
+    u64 budget;
-    u64 non_local_used;
+    u64 committed;
+    u64 reserved;
+    u64 available_to_reserve;
 };
 
 ////////////////////////////////////////////////////////////
@@ -468,10 +470,11 @@ void GPU_CopyBytesToFootprint(void *dst, void *src, GPU_Resource *footprint_refe
 ////////////////////////////////////////////////////////////
 //~ @hookdecl Memory info operations
 
-GPU_MemoryInfo GPU_QueryMemoryInfo(void);
+GPU_MemoryStats GPU_QueryDedicatedMemoryStats(void);
+GPU_MemoryStats GPU_QuerySharedMemoryStats(void);
 
 ////////////////////////////////////////////////////////////
-//~ @hookdecl Swapchain operations
+//~ @hookdecl Swapchain available_to_reserve
 
 GPU_Swapchain *GPU_AcquireSwapchain(WND_Handle window, GPU_Format format, Vec2I32 size);
 void GPU_ReleaseSwapchain(GPU_Swapchain *swapchain);

src/gpu/gpu_dx12/gpu_dx12.c

@@ -169,7 +169,7 @@ void GPU_D12_InitDevice(void)
     /* Create device */
     {
         __profn("Create device");
-        IDXGIAdapter1 *adapter = 0;
+        IDXGIAdapter3 *adapter = 0;
         ID3D12Device *device = 0;
         String error = Lit("Could not initialize GPU device.");
         String first_gpu_name = ZI;
@@ -178,12 +178,12 @@ void GPU_D12_InitDevice(void)
         for (;;)
         {
             {
-                hr = IDXGIFactory6_EnumAdapterByGpuPreference(g->factory, adapter_index, DXGI_GPU_PREFERENCE_HIGH_PERFORMANCE, &IID_IDXGIAdapter1, (void **)&adapter);
+                hr = IDXGIFactory6_EnumAdapterByGpuPreference(g->factory, adapter_index, DXGI_GPU_PREFERENCE_HIGH_PERFORMANCE, &IID_IDXGIAdapter3, (void **)&adapter);
             }
             if (SUCCEEDED(hr))
             {
                 DXGI_ADAPTER_DESC1 desc;
-                IDXGIAdapter1_GetDesc1(adapter, &desc);
+                IDXGIAdapter3_GetDesc1(adapter, &desc);
                 if (first_gpu_name.len == 0)
                 {
                     first_gpu_name = StringFromWstrNoLimit(scratch.arena, desc.Description);
@@ -197,7 +197,7 @@ void GPU_D12_InitDevice(void)
                 }
                 skip = 0;
                 ID3D12Device_Release(device);
-                IDXGIAdapter1_Release(adapter);
+                IDXGIAdapter3_Release(adapter);
                 adapter = 0;
                 device = 0;
                 ++adapter_index;
@@ -1810,10 +1810,36 @@ void GPU_CopyBytesToFootprint(void *dst, void *src, GPU_Resource *footprint_refe
 ////////////////////////////////////////////////////////////
 //~ @hookdef Memory info hooks
 
-GPU_MemoryInfo GPU_QueryMemoryInfo(void)
+GPU_MemoryStats GPU_QueryDedicatedMemoryStats(void)
 {
-    /* TODO */
+    GPU_D12_SharedState *g = &GPU_D12_shared_state;
-    return (GPU_MemoryInfo) ZI;
+    GPU_MemoryStats result = ZI;
+    {
+        DXGI_QUERY_VIDEO_MEMORY_INFO info = ZI;
+        IDXGIAdapter3_QueryVideoMemoryInfo(g->adapter, 0, DXGI_MEMORY_SEGMENT_GROUP_LOCAL, &info);
+        result.budget = info.Budget;
+        result.committed = info.CurrentUsage;
+        result.reserved = info.CurrentReservation;
+        result.available_to_reserve = info.AvailableForReservation;
+
+    }
+    return result;
+}
+
+GPU_MemoryStats GPU_QuerySharedMemoryStats(void)
+{
+    GPU_D12_SharedState *g = &GPU_D12_shared_state;
+    GPU_MemoryStats result = ZI;
+    {
+        DXGI_QUERY_VIDEO_MEMORY_INFO info = ZI;
+        IDXGIAdapter3_QueryVideoMemoryInfo(g->adapter, 0, DXGI_MEMORY_SEGMENT_GROUP_NON_LOCAL, &info);
+        result.budget = info.Budget;
+        result.committed = info.CurrentUsage;
+        result.reserved = info.CurrentReservation;
+        result.available_to_reserve = info.AvailableForReservation;
+
+    }
+    return result;
 }
 
 ////////////////////////////////////////////////////////////

src/gpu/gpu_dx12/gpu_dx12.h

@@ -313,7 +313,7 @@ Struct(GPU_D12_SharedState)
 
     /* Device */
     IDXGIFactory6 *factory;
-    IDXGIAdapter1 *adapter;
+    IDXGIAdapter3 *adapter;
     ID3D12Device *device;
 } extern GPU_D12_shared_state;
 

src/pp/pp.c

@@ -2057,7 +2057,8 @@ void UpdateUser(void)
 
     //- Query vram
 
-    GPU_MemoryInfo vram = GPU_QueryMemoryInfo();
+    GPU_MemoryStats vram_dedi    = GPU_QueryDedicatedMemoryStats();
+    GPU_MemoryStats vram_shared  = GPU_QuerySharedMemoryStats();
 
     //////////////////////////////
     //- Debug draw
@@ -2124,8 +2125,8 @@ void UpdateUser(void)
             UI_BuildLabelF("Arenas allocated:              %F", FmtUint(GetGstat(GSTAT_NUM_ARENAS)));
             UI_BuildSpacer(UI_PixelSize(20, 0));
 
-            UI_BuildLabelF("Video memory (GPU):            %F MiB", FmtFloat((f64)vram.local_used / 1024 / 1024));
+            UI_BuildLabelF("Video memory (GPU):            %F MiB", FmtFloat((f64)vram_dedi.committed / 1024 / 1024));
-            UI_BuildLabelF("Video memory (shared):         %F MiB", FmtFloat((f64)vram.non_local_used / 1024 / 1024));
+            UI_BuildLabelF("Video memory (shared):         %F MiB", FmtFloat((f64)vram_shared.committed / 1024 / 1024));
             //UI_BuildLabelF(\n"));
             //UI_BuildLabelF(\n"));
 
@@ -2388,7 +2389,7 @@ void UpdateUser(void)
         }
         Vec2 backbuffer_dst_f = MulXformV2(g->ui_to_screen_xf, VEC2(0, 0));
         Vec2I32 backbuffer_dst = VEC2I32(RoundF32ToI32(backbuffer_dst_f.x), RoundF32ToI32(backbuffer_dst_f.y));
-        g->gpu_submit_fence_target = GPU_PresentSwapchain(g->swapchain, g->ui_target, g->screen_size, backbuffer_dst, VSYNC);
+        g->gpu_submit_fence_target = GPU_PresentSwapchain(g->swapchain, g->ui_target, window_frame.monitor_size, backbuffer_dst, VSYNC);
     }
     WND_EndFrame(window_frame);
 

src/window/window.h

@@ -39,6 +39,7 @@ Struct(WND_Frame)
 
     /* Window info */
     Vec2I32 draw_size;
+    Vec2I32 monitor_size;
     String restore;
     b32 minimized;
     b32 maximized;

src/window/window_win32/window_win32.c

@@ -444,6 +444,7 @@ WND_Frame WND_BeginFrame(Arena *arena)
         GetMonitorInfo(MonitorFromWindow(hwnd, MONITOR_DEFAULTTOPRIMARY), &monitor_info);
         monitor_rect = monitor_info.rcMonitor;
     }
+    result.monitor_size = VEC2I32(monitor_rect.right - monitor_rect.left, monitor_rect.bottom - monitor_rect.top);
 
     /* Client rect */
     RECT client_rect = ZI;