[PATCH v3 4/5] wined3d: Loop over all vertex binding descriptors to gather buffers to bind.

[Jan Sikorski]

Since we're not using the nullDescriptor feature, we need to bind an actual buffer
for all bindings that are accessed by the shader (VUID-vkCmdDraw-None-04007).
If there's no buffer set for a stream, bind the null buffer instead.

Signed-off-by: Jan Sikorski 
---
 dlls/wined3d/context_vk.c | 34 +++++++++++++++++++++++++---------
 1 file changed, 25 insertions(+), 9 deletions(-)

diff --git a/dlls/wined3d/context_vk.c b/dlls/wined3d/context_vk.c
index 45133eabb69..e6dc5ea568b 100644
--- a/dlls/wined3d/context_vk.c
+++ b/dlls/wined3d/context_vk.c
@@ -2322,27 +2322,43 @@ static bool wined3d_context_vk_begin_render_pass(struct wined3d_context_vk *cont
 static void wined3d_context_vk_bind_vertex_buffers(struct wined3d_context_vk *context_vk,
         VkCommandBuffer vk_command_buffer, const struct wined3d_state *state, const struct wined3d_vk_info *vk_info)
 {
+    struct wined3d_device_vk *device_vk = wined3d_device_vk(context_vk->c.device);
     VkDeviceSize offsets[ARRAY_SIZE(state->streams)] = {0};
-    VkBuffer buffers[ARRAY_SIZE(state->streams)];
+    VkBuffer buffers[ARRAY_SIZE(state->streams)] = {0};
+    struct wined3d_graphics_pipeline_key_vk *key;
     const struct wined3d_stream_state *stream;
     const VkDescriptorBufferInfo *buffer_info;
+    unsigned int i, first, count, binding;
     struct wined3d_buffer_vk *buffer_vk;
     struct wined3d_buffer *buffer;
-    unsigned int i, first, count;

-    first = 0;
-    count = 0;
-    for (i = 0; i < ARRAY_SIZE(state->streams); ++i)
+    key = &context_vk->graphics.pipeline_key_vk;
+    for (i = 0; i < key->input_desc.vertexBindingDescriptionCount; ++i)
     {
-        stream = &state->streams[i];
-
+        binding = key->bindings[i].binding;
+        stream = &state->streams[binding];
         if ((buffer = stream->buffer))
         {
             buffer_vk = wined3d_buffer_vk(buffer);
             buffer_info = wined3d_buffer_vk_get_buffer_info(buffer_vk);
             wined3d_context_vk_reference_bo(context_vk, &buffer_vk->bo);
-            buffers[count] = buffer_info->buffer;
-            offsets[count] = buffer_info->offset + stream->offset;
+        }
+        else
+        {
+            buffer_info = &device_vk->null_resources_vk.buffer_info;
+            wined3d_context_vk_reference_bo(context_vk, &device_vk->null_resources_vk.bo);
+        }
+
+        buffers[binding] = buffer_info->buffer;
+        offsets[binding] = buffer_info->offset + stream->offset;
+    }
+
+    first = 0;
+    count = 0;
+    for (i = 0; i < ARRAY_SIZE(state->streams); ++i)
+    {
+        if (buffers[i])
+        {
             ++count;
             continue;
         }