[gtk/gbsneto/vulkan-fixes: 3/4] vulkan/renderpass: Use GENERAL for initial layout

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit a2b49322fb86f22a4f851e1b2b6d06467df2de4a
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Fri Oct 4 17:55:25 2019 -0300

    vulkan/renderpass: Use GENERAL for initial layout
    
    UNDEFINED initial layouts may not preserve the contents
    of the attachment after transitioning the layout. We want
    them to be preserved because we do partial rendering.
    
    Use GENERAL as the initial layout for render passes.

 gsk/vulkan/gskvulkanrenderpass.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gsk/vulkan/gskvulkanrenderpass.c b/gsk/vulkan/gskvulkanrenderpass.c
index 00fd658d8b..414d8b55d4 100644
--- a/gsk/vulkan/gskvulkanrenderpass.c
+++ b/gsk/vulkan/gskvulkanrenderpass.c
@@ -172,7 +172,7 @@ gsk_vulkan_render_pass_new (GdkVulkanContext  *context,
                                               .samples = VK_SAMPLE_COUNT_1_BIT,
                                               .loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR,
                                               .storeOp = VK_ATTACHMENT_STORE_OP_STORE,
-                                              .initialLayout = VK_IMAGE_LAYOUT_UNDEFINED,
+                                              .initialLayout = VK_IMAGE_LAYOUT_GENERAL,
                                               .finalLayout = final_layout
                                            }
                                         },