ddrawtrace: Fix calculation of FVF texture coord size.

1 files changed, 14 insertions, 1 deletions

diff --git a/helpers/d3d7size.hpp b/helpers/d3d7size.hpp
index 1d96cda6..5d0f6204 100644
--- a/helpers/d3d7size.hpp
+++ b/helpers/d3d7size.hpp
@@ -92,7 +92,20 @@ _getVertexSize(DWORD dwFVF) {
     for (DWORD CoordIndex = 0; CoordIndex < dwNumTextures; ++CoordIndex) {
         // See D3DFVF_TEXCOORDSIZE*
         DWORD dwTexCoordSize = (dwFVF >> (CoordIndex*2 + 16)) & 3;
-        size += dwTexCoordSize * sizeof(FLOAT);
+        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);