wined3d: Fix some cast-qual warnings.

dlls/wined3d/baseshader.c

@@ -750,7 +750,7 @@ HRESULT shader_get_registers_used(IWineD3DBaseShader *iface, const struct wined3
     }
     reg_maps->loop_depth = max_loop_depth;
 
-    This->baseShader.functionLength = ((char *)pToken - (char *)byte_code);
+    This->baseShader.functionLength = ((const char *)pToken - (const char *)byte_code);
 
     return WINED3D_OK;
 }
@@ -925,13 +925,13 @@ static void shader_dump_register(const struct wined3d_shader_register *reg,
         switch (reg->immconst_type)
         {
             case WINED3D_IMMCONST_FLOAT:
-                TRACE("%.8e", *(float *)reg->immconst_data);
+                TRACE("%.8e", *(const float *)reg->immconst_data);
                 break;
 
             case WINED3D_IMMCONST_FLOAT4:
                 TRACE("%.8e, %.8e, %.8e, %.8e",
-                        *(float *)&reg->immconst_data[0], *(float *)&reg->immconst_data[1],
-                        *(float *)&reg->immconst_data[2], *(float *)&reg->immconst_data[3]);
+                        *(const float *)&reg->immconst_data[0], *(const float *)&reg->immconst_data[1],
+                        *(const float *)&reg->immconst_data[2], *(const float *)&reg->immconst_data[3]);
                 break;
 
             default:

dlls/wined3d/buffer.c

@@ -577,7 +577,7 @@ static ULONG STDMETHODCALLTYPE buffer_AddRef(IWineD3DBuffer *iface)
 }
 
 /* Context activation is done by the caller. */
-const BYTE *buffer_get_sysmem(struct wined3d_buffer *This)
+BYTE *buffer_get_sysmem(struct wined3d_buffer *This)
 {
     /* AllocatedMemory exists if the buffer is double buffered or has no buffer object at all */
     if(This->resource.allocatedMemory) return This->resource.allocatedMemory;

dlls/wined3d/glsl_shader.c

@@ -1335,13 +1335,13 @@ static void shader_glsl_get_register_name(const struct wined3d_shader_register *
             switch (reg->immconst_type)
             {
                 case WINED3D_IMMCONST_FLOAT:
-                    sprintf(register_name, "%.8e", *(float *)reg->immconst_data);
+                    sprintf(register_name, "%.8e", *(const float *)reg->immconst_data);
                     break;
 
                 case WINED3D_IMMCONST_FLOAT4:
                     sprintf(register_name, "vec4(%.8e, %.8e, %.8e, %.8e)",
-                            *(float *)&reg->immconst_data[0], *(float *)&reg->immconst_data[1],
-                            *(float *)&reg->immconst_data[2], *(float *)&reg->immconst_data[3]);
+                            *(const float *)&reg->immconst_data[0], *(const float *)&reg->immconst_data[1],
+                            *(const float *)&reg->immconst_data[2], *(const float *)&reg->immconst_data[3]);
                     break;
 
                 default:

dlls/wined3d/wined3d_private.h

@@ -2395,7 +2395,7 @@ struct wined3d_buffer
 
 extern const IWineD3DBufferVtbl wined3d_buffer_vtbl;
 const BYTE *buffer_get_memory(IWineD3DBuffer *iface, UINT offset, GLuint *buffer_object);
-const BYTE *buffer_get_sysmem(struct wined3d_buffer *This);
+BYTE *buffer_get_sysmem(struct wined3d_buffer *This);
 
 /* IWineD3DRendertargetView */
 struct wined3d_rendertarget_view