wined3d: Add dual-source blend factors.

dlls/wined3d/state.c

@@ -406,6 +406,14 @@ static GLenum gl_blend_factor(enum wined3d_blend factor, const struct wined3d_fo
             return GL_CONSTANT_COLOR_EXT;
         case WINED3D_BLEND_INVBLENDFACTOR:
             return GL_ONE_MINUS_CONSTANT_COLOR_EXT;
+        case WINED3D_BLEND_SRC1COLOR:
+            return GL_SRC1_COLOR;
+        case WINED3D_BLEND_INVSRC1COLOR:
+            return GL_ONE_MINUS_SRC1_COLOR;
+        case WINED3D_BLEND_SRC1ALPHA:
+            return GL_SRC1_ALPHA;
+        case WINED3D_BLEND_INVSRC1ALPHA:
+            return GL_ONE_MINUS_SRC1_ALPHA;
         default:
             FIXME("Unhandled blend factor %#x.\n", factor);
             return GL_NONE;

include/wine/wined3d.h

@@ -400,6 +400,10 @@ enum wined3d_blend
     WINED3D_BLEND_BOTHINVSRCALPHA           = 13,
     WINED3D_BLEND_BLENDFACTOR               = 14,
     WINED3D_BLEND_INVBLENDFACTOR            = 15,
+    WINED3D_BLEND_SRC1COLOR                 = 16,
+    WINED3D_BLEND_INVSRC1COLOR              = 17,
+    WINED3D_BLEND_SRC1ALPHA                 = 18,
+    WINED3D_BLEND_INVSRC1ALPHA              = 19,
 };
 
 enum wined3d_blend_op