[host] d12: implement initial RGB24 support

host/platform/Windows/capture/D12/effect.h

@@ -0,0 +1,75 @@
+/**
+ * Looking Glass
+ * Copyright © 2017-2024 The Looking Glass Authors
+ * https://looking-glass.io
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc., 59
+ * Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef _H_D12_EFFECT_
+#define _H_D12_EFFECT_
+
+#include <stdbool.h>
+#include <d3d12.h>
+
+typedef struct D12Effect D12Effect;
+
+struct D12Effect
+{
+  const char * name;
+
+  bool (*create)(D12Effect ** instance, ID3D12Device3 * device);
+
+  void (*free)(D12Effect ** instance);
+
+  // set the input format, and get the output format of the effect
+  bool (*setFormat)(D12Effect * effect,
+    ID3D12Device3             * device,
+    const D3D12_RESOURCE_DESC * src,
+          D3D12_RESOURCE_DESC * dst);
+
+  ID3D12Resource * (*run)(D12Effect * effect,
+    ID3D12Device3 * device, ID3D12GraphicsCommandList * commandList,
+    ID3D12Resource * src);
+};
+
+static inline bool d12_effectCreate(const D12Effect * effect,
+  D12Effect ** instance, ID3D12Device3 * device)
+{
+  if (!effect->create(instance, device))
+    return false;
+  memcpy(*instance, effect, sizeof(*effect));
+  return true;
+}
+
+static inline void d12_effectFree(D12Effect ** instance)
+  { (*instance)->free(instance); }
+
+static inline bool d12_effectSetFormat(D12Effect * effect,
+  ID3D12Device3             * device,
+  const D3D12_RESOURCE_DESC * src,
+        D3D12_RESOURCE_DESC * dst)
+  { return effect->setFormat(effect, device, src, dst); }
+
+static inline ID3D12Resource * d12_effectRun(D12Effect * effect,
+  ID3D12Device3 * device, ID3D12GraphicsCommandList  * commandList,
+  ID3D12Resource * src)
+  { return effect->run(effect, device, commandList, src); }
+
+// effect defines
+
+extern const D12Effect D12Effect_RGB24;
+
+#endif