[PATCH 1/5] wined3d: Properly check if an attribute is used in drawStridedSlow().

[Henri Verbeet]

---
 dlls/wined3d/drawprim.c |   39 +++++++++++++++++++++++++++------------
 1 files changed, 27 insertions(+), 12 deletions(-)

diff --git a/dlls/wined3d/drawprim.c b/dlls/wined3d/drawprim.c
index 643b098..2b82cca 100644
--- a/dlls/wined3d/drawprim.c
+++ b/dlls/wined3d/drawprim.c
@@ -113,23 +113,38 @@ static void drawStridedSlow(IWineD3DDevice *iface, const struct wined3d_context
     VTRACE(("glBegin(%x)\n", glPrimType));
     glBegin(glPrimType);
 
-    element = &si->elements[WINED3D_FFP_POSITION];
-    if (element->data) position = element->data + streamOffset[element->stream_idx];
+    if (si->use_map & (1 << WINED3D_FFP_POSITION))
+    {
+        element = &si->elements[WINED3D_FFP_POSITION];
+        position = element->data + streamOffset[element->stream_idx];
+    }
 
-    element = &si->elements[WINED3D_FFP_NORMAL];
-    if (element->data) normal = element->data + streamOffset[element->stream_idx];
-    else glNormal3f(0, 0, 0);
+    if (si->use_map & (1 << WINED3D_FFP_NORMAL))
+    {
+        element = &si->elements[WINED3D_FFP_NORMAL];
+        normal = element->data + streamOffset[element->stream_idx];
+    }
+    else
+    {
+        glNormal3f(0, 0, 0);
+    }
 
-    element = &si->elements[WINED3D_FFP_DIFFUSE];
-    if (element->data) diffuse = element->data + streamOffset[element->stream_idx];
-    else glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
+    if (si->use_map & (1 << WINED3D_FFP_DIFFUSE))
+    {
+        element = &si->elements[WINED3D_FFP_DIFFUSE];
+        diffuse = element->data + streamOffset[element->stream_idx];
+    }
+    else
+    {
+        glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
+    }
     num_untracked_materials = context->num_untracked_materials;
     if (num_untracked_materials && element->format_desc->format != WINED3DFMT_A8R8G8B8)
         FIXME("Implement diffuse color tracking from %s\n", debug_d3dformat(element->format_desc->format));
 
-    element = &si->elements[WINED3D_FFP_SPECULAR];
-    if (element->data)
+    if (si->use_map & (1 << WINED3D_FFP_SPECULAR))
     {
+        element = &si->elements[WINED3D_FFP_SPECULAR];
         specular = element->data + streamOffset[element->stream_idx];
 
         /* special case where the fog density is stored in the specular alpha channel */
@@ -187,9 +202,9 @@ static void drawStridedSlow(IWineD3DDevice *iface, const struct wined3d_context
             continue;
         }
 
-        element = &si->elements[WINED3D_FFP_TEXCOORD0 + coordIdx];
-        if (element->data)
+        if (si->use_map & (1 << (WINED3D_FFP_TEXCOORD0 + coordIdx)))
         {
+            element = &si->elements[WINED3D_FFP_TEXCOORD0 + coordIdx];
             texCoords[coordIdx] = element->data + streamOffset[element->stream_idx];
             tex_mask |= (1 << textureNo);
         }
-- 
1.6.0.6