d3d8: Introduce a wined3d_usage_from_d3d() helper.

dlls/d3d8/buffer.c

@@ -296,7 +296,7 @@ HRESULT vertexbuffer_init(struct d3d8_vertexbuffer *buffer, struct d3d8_device *
     buffer->usage = usage;
 
     desc.byte_width = size;
-    desc.usage = usage & WINED3DUSAGE_MASK;
+    desc.usage = wined3d_usage_from_d3d(pool, usage);
     desc.bind_flags = 0;
     desc.access = wined3daccess_from_d3dpool(pool, usage) | map_access_from_usage(usage);
     /* Buffers are always readable. */
@@ -600,7 +600,7 @@ HRESULT indexbuffer_init(struct d3d8_indexbuffer *buffer, struct d3d8_device *de
         return D3DERR_INVALIDCALL;
 
     desc.byte_width = size;
-    desc.usage = (usage & WINED3DUSAGE_MASK) | WINED3DUSAGE_STATICDECL;
+    desc.usage = wined3d_usage_from_d3d(pool, usage) | WINED3DUSAGE_STATICDECL;
     desc.bind_flags = 0;
     desc.access = wined3daccess_from_d3dpool(pool, usage) | map_access_from_usage(usage);
     /* Buffers are always readable. */

dlls/d3d8/d3d8_private.h

@@ -353,6 +353,14 @@ static inline unsigned int wined3daccess_from_d3dpool(D3DPOOL pool, unsigned int
     return access;
 }
 
+static inline unsigned int wined3d_usage_from_d3d(D3DPOOL pool, DWORD usage)
+{
+    usage &= WINED3DUSAGE_MASK;
+    if (pool == D3DPOOL_SCRATCH)
+        usage |= WINED3DUSAGE_SCRATCH;
+    return usage;
+}
+
 static inline unsigned int wined3d_bind_flags_from_d3d8_usage(DWORD usage)
 {
     unsigned int bind_flags = 0;

dlls/d3d8/texture.c

@@ -1105,9 +1105,7 @@ HRESULT texture_init(struct d3d8_texture *texture, struct d3d8_device *device,
     desc.format = wined3dformat_from_d3dformat(format);
     desc.multisample_type = WINED3D_MULTISAMPLE_NONE;
     desc.multisample_quality = 0;
-    desc.usage = usage & WINED3DUSAGE_MASK;
-    if (pool == D3DPOOL_SCRATCH)
-        desc.usage |= WINED3DUSAGE_SCRATCH;
+    desc.usage = wined3d_usage_from_d3d(pool, usage);
     desc.bind_flags = wined3d_bind_flags_from_d3d8_usage(usage) | WINED3D_BIND_SHADER_RESOURCE;
     desc.access = wined3daccess_from_d3dpool(pool, usage);
     desc.width = width;
@@ -1158,10 +1156,7 @@ HRESULT cubetexture_init(struct d3d8_texture *texture, struct d3d8_device *devic
     desc.format = wined3dformat_from_d3dformat(format);
     desc.multisample_type = WINED3D_MULTISAMPLE_NONE;
     desc.multisample_quality = 0;
-    desc.usage = usage & WINED3DUSAGE_MASK;
-    desc.usage |= WINED3DUSAGE_LEGACY_CUBEMAP;
-    if (pool == D3DPOOL_SCRATCH)
-        desc.usage |= WINED3DUSAGE_SCRATCH;
+    desc.usage = wined3d_usage_from_d3d(pool, usage) | WINED3DUSAGE_LEGACY_CUBEMAP;
     desc.bind_flags = wined3d_bind_flags_from_d3d8_usage(usage) | WINED3D_BIND_SHADER_RESOURCE;
     desc.access = wined3daccess_from_d3dpool(pool, usage);
     desc.width = edge_length;
@@ -1216,9 +1211,7 @@ HRESULT volumetexture_init(struct d3d8_texture *texture, struct d3d8_device *dev
     desc.format = wined3dformat_from_d3dformat(format);
     desc.multisample_type = WINED3D_MULTISAMPLE_NONE;
     desc.multisample_quality = 0;
-    desc.usage = usage & WINED3DUSAGE_MASK;
-    if (pool == D3DPOOL_SCRATCH)
-        desc.usage |= WINED3DUSAGE_SCRATCH;
+    desc.usage = wined3d_usage_from_d3d(pool, usage);
     desc.bind_flags = wined3d_bind_flags_from_d3d8_usage(usage) | WINED3D_BIND_SHADER_RESOURCE;
     desc.access = wined3daccess_from_d3dpool(pool, usage);
     desc.width = width;