From dae9230afff5885676ca9f7fed0fb9b5f148ee96 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B3zef=20Kucia?= <joseph.kucia@gmail.com>
Date: Wed, 4 Apr 2018 17:20:44 +0200
Subject: [PATCH] vrclient: Add initial support for wined3d D3D11

---
 vrclient_x64/vrclient_main.c    | 86 ++++++++++++++++++++++++++++++++-
 vrclient_x64/vrclient_private.h |  1 +
 2 files changed, 86 insertions(+), 1 deletion(-)

diff --git a/vrclient_x64/vrclient_main.c b/vrclient_x64/vrclient_main.c
index e5ac73c7..c93d67b7 100644
--- a/vrclient_x64/vrclient_main.c
+++ b/vrclient_x64/vrclient_main.c
@@ -14,6 +14,9 @@
 #include "vrclient_defs.h"
 #include "vrclient_private.h"
 
+#include "initguid.h"
+#include "wined3d-interop.h"
+
 WINE_DEFAULT_DEBUG_CHANNEL(vrclient);
 
 BOOL WINAPI DllMain(HINSTANCE instance, DWORD reason, void *reserved)
@@ -148,6 +151,42 @@ void get_dxgi_output_info2(void *cpp_func, void *linux_side, int32_t *adapter_id
     *output_idx = 0;
 }
 
+struct submit_data
+{
+    void *linux_side;
+
+    EVRCompositorError (*submit)(void *, EVREye, Texture_t *, VRTextureBounds_t *, EVRSubmitFlags);
+
+    EVREye eye;
+    Texture_t texture;
+    VRTextureBounds_t bounds;
+    EVRSubmitFlags flags;
+};
+
+static CDECL void d3d11_texture_callback(unsigned int gl_texture, const void *data, unsigned int data_size)
+{
+    const struct submit_data *submit_data = data;
+    VRCompositorError error = 0;
+    VRTextureBounds_t bounds;
+    Texture_t texture;
+
+    TRACE("texture %u, data {%p, %u}\n", gl_texture, data, data_size);
+
+    texture = submit_data->texture;
+    texture.handle = (void *)(UINT_PTR)gl_texture;
+    texture.eType = TextureType_OpenGL;
+
+    /* Textures are upside-down in wined3d. */
+    bounds = submit_data->bounds;
+    bounds.vMin = submit_data->bounds.vMax;
+    bounds.vMax = submit_data->bounds.vMin;
+
+    error = submit_data->submit(submit_data->linux_side, submit_data->eye,
+            &texture, &bounds, submit_data->flags);
+    if (error)
+        ERR("error %#x\n", error);
+}
+
 void ivrcompositor_005_submit(
         void (*cpp_func)(void *, Hmd_Eye, void *, Compositor_TextureBounds *),
         void *linux_side, Hmd_Eye eye, void *texture, Compositor_TextureBounds *bounds)
@@ -172,6 +211,9 @@ VRCompositorError ivrcompositor_007_submit(
 {
     TRACE("%p, %#x, %#x, %p, %p\n", linux_side, eye, api, texture, bounds);
 
+    if (api == API_DirectX)
+        FIXME("Not implemented Direct3D API!\n");
+
     return cpp_func(linux_side, eye, api, texture, bounds);
 }
 
@@ -183,6 +225,9 @@ VRCompositorError ivrcompositor_008_submit(
 {
     TRACE("%p, %#x, %#x, %p, %p, %#x\n", linux_side, eye, api, texture, bounds, flags);
 
+    if (api == API_DirectX)
+        FIXME("Not implemented Direct3D API!\n");
+
     return cpp_func(linux_side, eye, api, texture, bounds, flags);
 }
 
@@ -190,7 +235,46 @@ EVRCompositorError ivrcompositor_submit(
         EVRCompositorError (*cpp_func)(void *, EVREye, Texture_t *, VRTextureBounds_t *, EVRSubmitFlags),
         void *linux_side, EVREye eye, Texture_t *texture, VRTextureBounds_t *bounds, EVRSubmitFlags flags)
 {
+    IWineD3D11Texture2D *wine_texture;
+    struct submit_data submit_data;
+    IUnknown *texture_iface;
+    HRESULT hr;
+
     TRACE("%p, %#x, %p, %p, %#x\n", linux_side, eye, texture, bounds, flags);
 
-    return cpp_func(linux_side, eye, texture, bounds, flags);
+    switch (texture->eType)
+    {
+        case TextureType_DirectX:
+            TRACE("D3D11\n");
+
+            if (flags & (Submit_TextureWithPose | Submit_TextureWithDepth))
+            {
+                FIXME("Submit with pose or depth is not supported.\n");
+                flags &= ~(Submit_TextureWithPose | Submit_TextureWithDepth);
+            }
+
+            texture_iface = texture->handle;
+            hr = texture_iface->lpVtbl->QueryInterface(texture_iface,
+                    &IID_IWineD3D11Texture2D, (void **)&wine_texture);
+            if (FAILED(hr))
+            {
+                ERR("Invalid D3D11 texture %p.\n", texture);
+                return cpp_func(linux_side, eye, texture, bounds, flags);
+            }
+
+            submit_data.linux_side = linux_side;
+            submit_data.submit = cpp_func;
+            submit_data.eye = eye;
+            submit_data.texture = *texture;
+            submit_data.bounds = *bounds;
+            submit_data.flags = flags;
+            wine_texture->lpVtbl->access_gl_texture(wine_texture,
+                    d3d11_texture_callback, &submit_data, sizeof(submit_data));
+
+            wine_texture->lpVtbl->Release(wine_texture);
+
+            return 0;
+        default:
+            return cpp_func(linux_side, eye, texture, bounds, flags);
+    }
 }
diff --git a/vrclient_x64/vrclient_private.h b/vrclient_x64/vrclient_private.h
index 821224ab..3b7b82d5 100644
--- a/vrclient_x64/vrclient_private.h
+++ b/vrclient_x64/vrclient_private.h
@@ -60,3 +60,4 @@ EVRCompositorError ivrcompositor_submit(
 #define TRACE WINE_TRACE
 #define ERR WINE_ERR
 #define WARN WINE_WARN
+#define FIXME WINE_FIXME