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From: Dmitrii Ovchinnikov <ovchinnikov.dmitrii@gmail.com>
To: ffmpeg-devel@ffmpeg.org
Date: Wed, 28 May 2025 16:31:53 +0200
Message-ID: <20250528143153.1784-2-ovchinnikov.dmitrii@gmail.com>
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Subject: [FFmpeg-devel] [PATCH 2/2] avutil/hwcontext_d3d12va: added resource
Flags support to command line
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Certain components require ID3D11/ID3D12 textures to be created with
additional BindFlags or MiscFlags. FFmpeg currently provides no
mechanism to configure these flags externally, leaving no way to
satisfy such components without patching the library.
This patch adds private device options that can be passed through
uav_resource=1 adds D3D12_RESOURCE_FLAG_ALLOW_UNORDERED_ACCESS
render_target_resource=1 adds D3D12_RESOURCE_FLAG_ALLOW_RENDER_TARGET
shared_resource=1 adds D3D12_HEAP_FLAG_SHARED
---
libavutil/hwcontext_d3d12va.c | 20 +++++++++++++++++++-
libavutil/hwcontext_d3d12va.h | 5 +++++
2 files changed, 24 insertions(+), 1 deletion(-)
diff --git a/libavutil/hwcontext_d3d12va.c b/libavutil/hwcontext_d3d12va.c
index 6507cf69c1..67c80c290e 100644
--- a/libavutil/hwcontext_d3d12va.c
+++ b/libavutil/hwcontext_d3d12va.c
@@ -237,6 +237,9 @@ static AVBufferRef *d3d12va_pool_alloc(void *opaque, size_t size)
AVBufferRef *buf;
AVD3D12VAFrame *frame;
D3D12_HEAP_PROPERTIES props = { .Type = D3D12_HEAP_TYPE_DEFAULT };
+
+ hwctx->flags |= device_hwctx->flags;
+
D3D12_RESOURCE_DESC desc = {
.Dimension = D3D12_RESOURCE_DIMENSION_TEXTURE2D,
.Alignment = 0,
@@ -254,7 +257,7 @@ 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, device_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;
@@ -673,6 +676,21 @@ static int d3d12va_device_create(AVHWDeviceContext *hwdev, const char *device,
}
}
+ ctx->flags = 0;
+
+ // "shader_resouce" already enabled by default.
+
+ if (av_dict_get(opts, "uav_resource", NULL, 0))
+ ctx->flags |= D3D12_RESOURCE_FLAG_ALLOW_UNORDERED_ACCESS;
+
+ if (av_dict_get(opts, "render_target_resource", NULL, 0))
+ ctx->flags |= D3D12_RESOURCE_FLAG_ALLOW_RENDER_TARGET;
+
+ ctx->heap_flags = D3D12_HEAP_FLAG_NONE;
+
+ if (av_dict_get(opts, "shared_resource", 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..f1aea52559 100644
--- a/libavutil/hwcontext_d3d12va.h
+++ b/libavutil/hwcontext_d3d12va.h
@@ -75,6 +75,11 @@ typedef struct AVD3D12VADeviceContext {
void (*lock)(void *lock_ctx);
void (*unlock)(void *lock_ctx);
void *lock_ctx;
+ /**
+ * Need to pass value to frames context from command line
+ */
+ D3D12_RESOURCE_FLAGS flags;
+ D3D12_HEAP_FLAGS heap_flags;
} AVD3D12VADeviceContext;
/**
--
2.47.1.windows.1
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