[PATCH 2/3] d3d11: Make sure that index buffer is set for instanced indexed draws.

[Nikolay Sivov]

From: Nikolay Sivov

Signed-off-by: Nikolay Sivov 
---
 dlls/d3d11/tests/d3d11.c | 4 ++++
 dlls/wined3d/cs.c        | 7 +++++++
 2 files changed, 11 insertions(+)

diff --git a/dlls/d3d11/tests/d3d11.c b/dlls/d3d11/tests/d3d11.c
index e03057a1845..fce02156b65 100644
--- a/dlls/d3d11/tests/d3d11.c
+++ b/dlls/d3d11/tests/d3d11.c
@@ -21034,6 +21034,10 @@ static void test_index_buffer_offset(void)
     }
     release_resource_readback(&rb);

+    /* Without index buffer */
+    ID3D11DeviceContext_IASetIndexBuffer(context, NULL, DXGI_FORMAT_R32_UINT, 0);
+    ID3D11DeviceContext_DrawIndexedInstancedIndirect(context, args_buffer, 0);
+
     ID3D11Buffer_Release(so_buffer);
     ID3D11Buffer_Release(args_buffer);
     ID3D11Buffer_Release(ib);
diff --git a/dlls/wined3d/cs.c b/dlls/wined3d/cs.c
index 83c74c56ed0..dc1e071e9ca 100644
--- a/dlls/wined3d/cs.c
+++ b/dlls/wined3d/cs.c
@@ -1204,6 +1204,13 @@ void CDECL wined3d_device_context_draw_indirect(struct wined3d_device_context *c
     struct wined3d_cs_draw *op;

wined3d_device_context_lock(context);
+
+    if (indexed && !state->index_buffer)
+    {
+        wined3d_device_context_unlock(context);
+        return;
+    }
+
     op = wined3d_device_context_require_space(context, sizeof(*op), WINED3D_CS_QUEUE_DEFAULT);
     op->opcode = WINED3D_CS_OP_DRAW;
     op->primitive_type = state->primitive_type;