[gtk/gbsneto/vulkan-fixes: 6/7] vulkan/renderpass: Use GENERAL for initial layout

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

commit ba9a37e30a94ef963366fb6f48850265fafaa4ed
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
                                            }
                                         },