Zebediah Figura : wined3d: Check the writemask for the correct render target in draw_primitive().

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 998d901f0d621f4d117d1a56cf1c02394bad7382
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=998d901f0d621f4d117d1a56cf1c02394bad7382

Author: Zebediah Figura <z.figura12 at gmail.com>
Date:   Sun Mar 15 23:42:07 2020 -0500

wined3d: Check the writemask for the correct render target in draw_primitive().

Signed-off-by: Zebediah Figura <z.figura12 at gmail.com>
Signed-off-by: Henri Verbeet <hverbeet at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/wined3d/context.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/dlls/wined3d/context.c b/dlls/wined3d/context.c
index 0761dd6379..d9e3dfaa50 100644
--- a/dlls/wined3d/context.c
+++ b/dlls/wined3d/context.c
@@ -5105,6 +5105,15 @@ static GLenum gl_tfb_primitive_type_from_d3d(enum wined3d_primitive_type primiti
     }
 }
 
+static unsigned int get_render_target_writemask(const struct wined3d_blend_state *state, unsigned int index)
+{
+    if (!state)
+        return 0xf;
+    if (!state->desc.independent)
+        index = 0;
+    return state->desc.rt[index].writemask;
+}
+
 /* Routine common to the draw primitive and draw indexed primitive routines */
 void draw_primitive(struct wined3d_device *device, const struct wined3d_state *state,
         const struct wined3d_draw_parameters *parameters)
@@ -5154,7 +5163,7 @@ void draw_primitive(struct wined3d_device *device, const struct wined3d_state *s
         if (!(rtv = fb->render_targets[i]) || rtv->format->id == WINED3DFMT_NULL)
             continue;
 
-        if (!state->blend_state || state->blend_state->desc.rt[0].writemask)
+        if (get_render_target_writemask(state->blend_state, i))
         {
             wined3d_rendertarget_view_load_location(rtv, context, rtv->resource->draw_binding);
             wined3d_rendertarget_view_invalidate_location(rtv, ~rtv->resource->draw_binding);