From: Owen Rudge <owen@owenrudge.net>
Subject: [4/4] d3dx9: Add basic implementation of D3DXFilterTexture, plus tests
Message-Id: <4C4C872C.4020104@owenrudge.net>
Date: Sun, 25 Jul 2010 19:49:16 +0100

---
  dlls/d3dx9_36/d3dx9_36.spec   |    2 +-
  dlls/d3dx9_36/tests/texture.c |   55 ++++++++++++++++++++++++++++++++++
  dlls/d3dx9_36/texture.c       |   66 
+++++++++++++++++++++++++++++++++++++++++
  3 files changed, 122 insertions(+), 1 deletions(-)

diff --git a/dlls/d3dx9_36/d3dx9_36.spec b/dlls/d3dx9_36/d3dx9_36.spec
index b9a00da..622a03c 100644
--- a/dlls/d3dx9_36/d3dx9_36.spec
+++ b/dlls/d3dx9_36/d3dx9_36.spec
@@ -128,7 +128,7 @@
 @ stub D3DXFillTextureTX
 @ stub D3DXFillVolumeTexture
 @ stub D3DXFillVolumeTextureTX
-@ stub D3DXFilterTexture
+@ stdcall D3DXFilterTexture(ptr ptr long long)
 @ stdcall D3DXFindShaderComment(ptr long ptr ptr)
 @ stub D3DXFloat16To32Array
 @ stub D3DXFloat32To16Array
diff --git a/dlls/d3dx9_36/tests/texture.c b/dlls/d3dx9_36/tests/texture.c
index ff4aa15..6a26237 100644
--- a/dlls/d3dx9_36/tests/texture.c
+++ b/dlls/d3dx9_36/tests/texture.c
@@ -315,6 +315,60 @@ static void test_D3DXCreateTexture(IDirect3DDevice9 *device)
     }
 }
 
+static void test_D3DXFilterTexture(IDirect3DDevice9 *device)
+{
+    IDirect3DTexture9 *tex;
+    HRESULT hr;
+
+    hr = IDirect3DDevice9_CreateTexture(device, 256, 256, 5, 0, D3DFMT_A8R8G8B8, D3DPOOL_MANAGED, &tex, NULL);
+
+    if (SUCCEEDED(hr))
+    {
+        hr = D3DXFilterTexture((IDirect3DBaseTexture9*) tex, NULL, 0, D3DX_FILTER_NONE);
+        ok(hr == D3D_OK, "D3DXFilterTexture returned %#x, expected %#x\n", hr, D3D_OK);
+
+        hr = D3DXFilterTexture((IDirect3DBaseTexture9*) tex, NULL, 0, D3DX_FILTER_BOX + 1); /* Invalid filter */
+        ok(hr == D3DERR_INVALIDCALL, "D3DXFilterTexture returned %#x, expected %#x\n", hr, D3DERR_INVALIDCALL);
+
+        hr = D3DXFilterTexture((IDirect3DBaseTexture9*) tex, NULL, 5, D3DX_FILTER_NONE); /* Last miplevel */
+        ok(hr == D3DERR_INVALIDCALL, "D3DXFilterTexture returned %#x, expected %#x\n", hr, D3DERR_INVALIDCALL);
+
+        hr = D3DXFilterTexture((IDirect3DBaseTexture9*) tex, NULL, 20, D3DX_FILTER_NONE); /* Invalid miplevel */
+        ok(hr == D3DERR_INVALIDCALL, "D3DXFilterTexture returned %#x, expected %#x\n", hr, D3DERR_INVALIDCALL);
+    }
+    else
+        skip("Failed to create texture\n");
+
+    IDirect3DTexture9_Release(tex);
+
+    hr = D3DXFilterTexture(NULL, NULL, 0, D3DX_FILTER_NONE);
+    ok(hr == D3DERR_INVALIDCALL, "D3DXFilterTexture returned %#x, expected %#x\n", hr, D3DERR_INVALIDCALL);
+
+    /* Test different pools */
+    hr = IDirect3DDevice9_CreateTexture(device, 256, 256, 0, 0, D3DFMT_A8R8G8B8, D3DPOOL_SYSTEMMEM, &tex, NULL);
+
+    if (SUCCEEDED(hr))
+    {
+        hr = D3DXFilterTexture((IDirect3DBaseTexture9*) tex, NULL, 0, D3DX_FILTER_NONE);
+        ok(hr == D3D_OK, "D3DXFilterTexture returned %#x, expected %#x\n", hr, D3D_OK);
+        IDirect3DTexture9_Release(tex);
+    }
+    else
+        skip("Failed to create texture\n");
+
+
+    hr = IDirect3DDevice9_CreateTexture(device, 256, 256, 0, 0, D3DFMT_A8R8G8B8, D3DPOOL_SCRATCH, &tex, NULL);
+
+    if (SUCCEEDED(hr))
+    {
+        hr = D3DXFilterTexture((IDirect3DBaseTexture9*) tex, NULL, 0, D3DX_FILTER_NONE);
+        ok(hr == D3D_OK, "D3DXFilterTexture returned %#x, expected %#x\n", hr, D3D_OK);
+        IDirect3DTexture9_Release(tex);
+    }
+    else
+        skip("Failed to create texture\n");
+}
+
 START_TEST(texture)
 {
     HWND wnd;
@@ -348,6 +402,7 @@ START_TEST(texture)
 
     test_D3DXCheckTextureRequirements(device);
     test_D3DXCreateTexture(device);
+    test_D3DXFilterTexture(device);
 
     IDirect3DDevice9_Release(device);
     IDirect3D9_Release(d3d);
diff --git a/dlls/d3dx9_36/texture.c b/dlls/d3dx9_36/texture.c
index 9d547ce..8992399 100644
--- a/dlls/d3dx9_36/texture.c
+++ b/dlls/d3dx9_36/texture.c
@@ -44,6 +44,72 @@ UINT make_pow2(UINT num)
     return result;
 }
 
+HRESULT WINAPI D3DXFilterTexture(LPDIRECT3DBASETEXTURE9 texture,
+                                 CONST PALETTEENTRY *palette,
+                                 UINT srclevel,
+                                 DWORD filter)
+{
+    UINT level = srclevel + 1;
+    HRESULT hr;
+
+    TRACE("(%p, %p, %d, %d)\n", texture, palette, srclevel, filter);
+
+    if (!texture)
+        return D3DERR_INVALIDCALL;
+
+    if ((filter & 0xFFFF) > D3DX_FILTER_BOX && filter != D3DX_DEFAULT)
+        return D3DERR_INVALIDCALL;
+
+    if (srclevel >= IDirect3DBaseTexture9_GetLevelCount(texture))
+        return D3DERR_INVALIDCALL;
+
+    switch (IDirect3DBaseTexture9_GetType(texture))
+    {
+        case D3DRTYPE_TEXTURE:
+        {
+            IDirect3DSurface9 *topsurf, *mipsurf;
+            D3DSURFACE_DESC desc;
+
+            if (filter == D3DX_DEFAULT)
+            {
+                IDirect3DTexture9_GetLevelDesc((IDirect3DTexture9*) texture, srclevel, &desc);
+
+                if (is_pow2(desc.Width) && is_pow2(desc.Height))
+                    filter = D3DX_FILTER_BOX;
+                else
+                    filter = D3DX_FILTER_BOX | D3DX_FILTER_DITHER;
+            }
+
+            hr = IDirect3DTexture9_GetSurfaceLevel((IDirect3DTexture9*) texture, srclevel, &topsurf);
+
+            if (FAILED(hr))
+                return D3DERR_INVALIDCALL;
+
+            while (IDirect3DTexture9_GetSurfaceLevel((IDirect3DTexture9*) texture, level, &mipsurf) == D3D_OK)
+            {
+                hr = D3DXLoadSurfaceFromSurface(mipsurf, palette, NULL, topsurf, palette, NULL, filter, 0);
+                IDirect3DSurface9_Release(mipsurf);
+
+                if (FAILED(hr))
+                    break;
+
+                level++;
+            }
+
+            IDirect3DSurface9_Release(topsurf);
+
+            if (level == srclevel + 1)
+                return D3DERR_INVALIDCALL;
+
+            return D3D_OK;
+        }
+
+        default:
+            FIXME("Implement volume and cube texture filtering\n");
+            return E_NOTIMPL;
+    }
+}
+
 HRESULT WINAPI D3DXCheckTextureRequirements(LPDIRECT3DDEVICE9 device,
                                             UINT* width,
                                             UINT* height,