1 files changed, 118 insertions, 0 deletions
diff --git a/helpers/d3d7size.hpp b/helpers/d3d7size.hpp
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+/**************************************************************************
+ *
+ * Copyright 2015 VMware, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sub license,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
+ * AUTHORS,
+ * AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
+ * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ **************************************************************************/
+
+
+/*
+ * Auxiliary functions to compute the size of array/blob arguments.
+ */
+
+#pragma once
+
+
+static inline size_t
+_getVertexSize(DWORD dwFVF) {
+    size_t size = 0;
+
+    assert((dwFVF & D3DFVF_RESERVED0) == 0);
+
+    switch (dwFVF & D3DFVF_POSITION_MASK) {
+    case D3DFVF_XYZ:
+        size += 3 * sizeof(FLOAT);
+        break;
+    case D3DFVF_XYZRHW:
+        size += 4 * sizeof(FLOAT);
+        break;
+    case D3DFVF_XYZB1:
+        size += (3 + 1) * sizeof(FLOAT);
+        break;
+    case D3DFVF_XYZB2:
+        size += (3 + 2) * sizeof(FLOAT);
+        break;
+    case D3DFVF_XYZB3:
+        size += (3 + 3) * sizeof(FLOAT);
+        break;
+    case D3DFVF_XYZB4:
+        size += (3 + 4) * sizeof(FLOAT);
+        break;
+    case D3DFVF_XYZB5:
+        size += (3 + 5) * sizeof(FLOAT);
+        break;
+#if DIRECT3D_VERSION >= 0x0900
+    case D3DFVF_XYZW:
+        size += 4 * sizeof(FLOAT);
+        break;
+#endif
+    }
+
+    if (dwFVF & D3DFVF_NORMAL) {
+        size += 3 * sizeof(FLOAT);
+    }
+#if DIRECT3D_VERSION >= 0x0800
+    if (dwFVF & D3DFVF_PSIZE) {
+        size += sizeof(FLOAT);
+    }
+#else
+    if (dwFVF & D3DFVF_RESERVED1) {
+        // D3DLVERTEX
+        size += sizeof(DWORD);
+    }
+#endif
+    if (dwFVF & D3DFVF_DIFFUSE) {
+        size += sizeof(D3DCOLOR);
+    }
+    if (dwFVF & D3DFVF_SPECULAR) {
+        size += sizeof(D3DCOLOR);
+    }
+
+    DWORD dwNumTextures = (dwFVF & D3DFVF_TEXCOUNT_MASK) >> D3DFVF_TEXCOUNT_SHIFT;
+    for (DWORD CoordIndex = 0; CoordIndex < dwNumTextures; ++CoordIndex) {
+        // See D3DFVF_TEXCOORDSIZE*
+        DWORD dwTexCoordSize = (dwFVF >> (CoordIndex*2 + 16)) & 3;
+        switch (dwTexCoordSize) {
+        case D3DFVF_TEXTUREFORMAT2:
+            size += 2 * sizeof(FLOAT);
+            break;
+        case D3DFVF_TEXTUREFORMAT1:
+            size += 1 * sizeof(FLOAT);
+            break;
+        case D3DFVF_TEXTUREFORMAT3:
+            size += 3 * sizeof(FLOAT);
+            break;
+        case D3DFVF_TEXTUREFORMAT4:
+            size += 4 * sizeof(FLOAT);
+            break;
+        }
+    }
+
+    assert((dwFVF & D3DFVF_RESERVED2) == 0);
+
+    return size;
+}
+
+
+
+