1 files changed, 135 insertions, 0 deletions
diff --git a/src/TextureUtil.h b/src/TextureUtil.h
new file mode 100644
index 0000000..442dcf8
--- /dev/null
+++ b/src/TextureUtil.h
@@ -0,0 +1,135 @@
+/* 
+* Copyright (c) 2008-2016, NVIDIA CORPORATION. All rights reserved. 
+* 
+* NVIDIA CORPORATION and its licensors retain all intellectual property 
+* and proprietary rights in and to this software, related documentation 
+* and any modifications thereto. Any use, reproduction, disclosure or 
+* distribution of this software and related documentation without an express 
+* license agreement from NVIDIA CORPORATION is strictly prohibited. 
+*/
+
+#pragma once
+#include "Common.h"
+
+namespace GFSDK
+{
+namespace SSAO
+{
+
+#if SUPPORT_D3D11
+
+namespace D3D11
+{
+
+//--------------------------------------------------------------------------------
+class TextureUtil
+{
+public:
+    static void GetDesc(ID3D11RenderTargetView* pRTV, D3D11_TEXTURE2D_DESC* pTextureDesc)
+    {
+        ID3D11Texture2D* pBaseTexture;
+        pRTV->GetResource((ID3D11Resource**)&pBaseTexture);
+
+        pBaseTexture->GetDesc(pTextureDesc);
+        SAFE_RELEASE(pBaseTexture);
+    }
+    static void GetDesc(ID3D11ShaderResourceView* pSRV, D3D11_TEXTURE2D_DESC* pTextureDesc)
+    {
+        ID3D11Texture2D* pBaseTexture;
+        pSRV->GetResource((ID3D11Resource**)&pBaseTexture);
+
+        pBaseTexture->GetDesc(pTextureDesc);
+        SAFE_RELEASE(pBaseTexture);
+    }
+    static void GetDesc(ID3D11DepthStencilView* pDSV, D3D11_TEXTURE2D_DESC* pTextureDesc)
+    {
+        ID3D11Texture2D* pBaseTexture;
+        pDSV->GetResource((ID3D11Resource**)&pBaseTexture);
+
+        pBaseTexture->GetDesc(pTextureDesc);
+        SAFE_RELEASE(pBaseTexture);
+    }
+};
+
+} // namespace D3D11
+
+#endif
+
+#if SUPPORT_D3D12
+
+namespace D3D12
+{
+
+//--------------------------------------------------------------------------------
+class TextureUtil
+{
+public:
+    static void GetDesc(ID3D12Resource* pResource, D3D12_RESOURCE_DESC* pResourceDesc)
+    {
+        ZeroMemory(pResourceDesc, sizeof(D3D12_RESOURCE_DESC));
+        *pResourceDesc = pResource->GetDesc();
+    }
+};
+
+} // namespace D3D12
+
+#endif
+
+#if SUPPORT_GL
+
+namespace GL
+{
+
+//--------------------------------------------------------------------------------
+struct TextureDesc2D
+{
+    TextureDesc2D()
+        : Width(0)
+        , Height(0)
+        , SampleCount(1)
+    {
+    }
+
+    GLint Width;
+    GLint Height;
+    GLint SampleCount;
+};
+
+//--------------------------------------------------------------------------------
+class TextureUtil
+{
+public:
+   static bool HasValidTextureTarget(GFSDK_SSAO_Texture_GL Texture)
+   {
+       return (Texture.Target == GL_TEXTURE_2D || Texture.Target == GL_TEXTURE_2D_MULTISAMPLE);
+   }
+
+   static void GetDesc2D(const GFSDK_SSAO_GLFunctions& GL, GFSDK_SSAO_Texture_GL Texture, TextureDesc2D* pTextureDesc)
+   {
+        ASSERT(HasValidTextureTarget(Texture));
+        ASSERT_GL_ERROR(GL);
+
+        GL.glBindTexture(Texture.Target, Texture.TextureId);
+        ASSERT_GL_ERROR(GL);
+
+        GL.glGetTexLevelParameteriv(Texture.Target, 0, GL_TEXTURE_WIDTH, &pTextureDesc->Width);
+        GL.glGetTexLevelParameteriv(Texture.Target, 0, GL_TEXTURE_HEIGHT, &pTextureDesc->Height);
+        ASSERT_GL_ERROR(GL);
+
+        if (Texture.Target == GL_TEXTURE_2D_MULTISAMPLE)
+        {
+            GL.glGetTexLevelParameteriv(Texture.Target, 0, GL_TEXTURE_SAMPLES, &pTextureDesc->SampleCount);
+            ASSERT_GL_ERROR(GL);
+        }
+
+        GL.glBindTexture(Texture.Target, 0);
+        ASSERT_GL_ERROR(GL);
+   }
+};
+
+} // namespace GL
+
+#endif
+
+} // namespace SSAO
+} // namespace GFSDK