[FFmpeg-devel] [PATCH v3] avutil/hwcontext_d3d12va: added resource and heap flags to DeviceContext

* [FFmpeg-devel] [PATCH v3] avutil/hwcontext_d3d12va: added resource and heap flags to DeviceContext
@ 2025-07-23 12:10 Dmitrii Ovchinnikov
  2025-08-06 16:26 ` [FFmpeg-devel] 回复: " Wu Jianhua
  0 siblings, 1 reply; 2+ messages in thread
From: Dmitrii Ovchinnikov @ 2025-07-23 12:10 UTC (permalink / raw)
  To: ffmpeg-devel; +Cc: Dmitrii Ovchinnikov

---
 libavutil/hwcontext_d3d12va.c | 17 ++++++++++++++++-
 libavutil/hwcontext_d3d12va.h | 11 +++++++++++
 2 files changed, 27 insertions(+), 1 deletion(-)

diff --git a/libavutil/hwcontext_d3d12va.c b/libavutil/hwcontext_d3d12va.c
index 6507cf69c1..dca8ddc0c3 100644
--- a/libavutil/hwcontext_d3d12va.c
+++ b/libavutil/hwcontext_d3d12va.c
@@ -254,7 +254,7 @@ static AVBufferRef *d3d12va_pool_alloc(void *opaque, size_t size)
     if (!frame)
         return NULL;
 
-    if (FAILED(ID3D12Device_CreateCommittedResource(device_hwctx->device, &props, D3D12_HEAP_FLAG_NONE, &desc,
+    if (FAILED(ID3D12Device_CreateCommittedResource(device_hwctx->device, &props, hwctx->heap_flags, &desc,
         D3D12_RESOURCE_STATE_COMMON, NULL, &IID_ID3D12Resource, (void **)&frame->texture))) {
         av_log(ctx, AV_LOG_ERROR, "Could not create the texture\n");
         goto fail;
@@ -281,6 +281,7 @@ fail:
 static int d3d12va_frames_init(AVHWFramesContext *ctx)
 {
     AVD3D12VAFramesContext *hwctx = ctx->hwctx;
+    AVD3D12VADeviceContext *device_hwctx = ctx->device_ctx->hwctx;
     int i;
 
     for (i = 0; i < FF_ARRAY_ELEMS(supported_formats); i++) {
@@ -298,6 +299,9 @@ static int d3d12va_frames_init(AVHWFramesContext *ctx)
         return AVERROR(EINVAL);
     }
 
+    hwctx->flags |= device_hwctx->resource_flags;
+    hwctx->heap_flags |= device_hwctx->heap_flags;
+
     ffhwframesctx(ctx)->pool_internal = av_buffer_pool_init2(sizeof(AVD3D12VAFrame),
         ctx, d3d12va_pool_alloc, NULL);
 
@@ -673,6 +677,17 @@ static int d3d12va_device_create(AVHWDeviceContext *hwdev, const char *device,
         }
     }
 
+    if (av_dict_get(opts, "UAV", NULL, 0))
+        ctx->resource_flags |= D3D12_RESOURCE_FLAG_ALLOW_UNORDERED_ACCESS;
+
+    if (av_dict_get(opts, "RTV", NULL, 0))
+        ctx->resource_flags |= D3D12_RESOURCE_FLAG_ALLOW_RENDER_TARGET;
+
+    ctx->heap_flags = D3D12_HEAP_FLAG_NONE;
+
+    if (av_dict_get(opts, "SHARED", NULL, 0))
+        ctx->heap_flags |= D3D12_HEAP_FLAG_SHARED;
+
     return 0;
 }
 
diff --git a/libavutil/hwcontext_d3d12va.h b/libavutil/hwcontext_d3d12va.h
index 212a6a6146..0d3a4cc1ec 100644
--- a/libavutil/hwcontext_d3d12va.h
+++ b/libavutil/hwcontext_d3d12va.h
@@ -75,6 +75,16 @@ typedef struct AVD3D12VADeviceContext {
     void (*lock)(void *lock_ctx);
     void (*unlock)(void *lock_ctx);
     void *lock_ctx;
+    /**
+     * Resource flags and Heap flags to be applied to D3D12 resources allocated
+     * for frames using this device context.
+     *
+     * Can be set by the user before initialization via av_hwdevice_ctx_create().
+     *
+     * These apply globally to all frames allocated from this device context.
+     */
+    D3D12_RESOURCE_FLAGS resource_flags;
+    D3D12_HEAP_FLAGS heap_flags;
 } AVD3D12VADeviceContext;
 
 /**
@@ -137,6 +147,7 @@ typedef struct AVD3D12VAFramesContext {
      * @see https://learn.microsoft.com/en-us/windows/win32/api/d3d12/ne-d3d12-d3d12_resource_flags
      */
     D3D12_RESOURCE_FLAGS flags;
+    D3D12_HEAP_FLAGS heap_flags;
 } AVD3D12VAFramesContext;
 
 #endif /* AVUTIL_HWCONTEXT_D3D12VA_H */
-- 
2.47.1.windows.1

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