Render to fbo when the size mismatches at creation time.

This is needed because the window(and thus the GL drawable) might be smaller than the D3D backbuffer. If we waited for the FBO switch until Present is called we'd lose data in the first frame.

Render to fbo when the size mismatches at creation time.
740e2d40 · Stefan Dösinger · Alexandre Julliard · 548b0bcd · 740e2d40
Commit 740e2d40 authored Dec 06, 2009 by Stefan Dösinger Committed by Alexandre Julliard Dec 07, 2009
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Showing with 43 additions and 5 deletions

device.c dlls/wined3d/device.c +43 -5

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--- a/dlls/wined3d/device.c
+++ b/dlls/wined3d/device.c
@@ -1043,6 +1043,7 @@ static HRESULT WINAPI IWineD3DDeviceImpl_CreateSwapChain(IWineD3DDevice *iface,
    BOOL                    displaymode_set = FALSE;
    WINED3DDISPLAYMODE      Mode;
    const struct GlPixelFormatDesc *format_desc;
+    RECT                    client_rect;

    TRACE("(%p) : Created Additional Swap Chain\n", This);

@@ -1115,20 +1116,18 @@ static HRESULT WINAPI IWineD3DDeviceImpl_CreateSwapChain(IWineD3DDevice *iface,
    object->orig_fmt = Mode.Format;
    format_desc = getFormatDescEntry(Mode.Format, &This->adapter->gl_info);

+    GetClientRect(object->win_handle, &client_rect);
    if (pPresentationParameters->Windowed &&
        ((pPresentationParameters->BackBufferWidth == 0) ||
         (pPresentationParameters->BackBufferHeight == 0) ||
         (pPresentationParameters->BackBufferFormat == WINED3DFMT_UNKNOWN))) {

-        RECT Rect;
-        GetClientRect(object->win_handle, &Rect);
-
        if (pPresentationParameters->BackBufferWidth == 0) {
-           pPresentationParameters->BackBufferWidth = Rect.right;
+           pPresentationParameters->BackBufferWidth = client_rect.right;
           TRACE("Updating width to %d\n", pPresentationParameters->BackBufferWidth);
        }
        if (pPresentationParameters->BackBufferHeight == 0) {
-           pPresentationParameters->BackBufferHeight = Rect.bottom;
+           pPresentationParameters->BackBufferHeight = client_rect.bottom;
           TRACE("Updating height to %d\n", pPresentationParameters->BackBufferHeight);
        }
        if (pPresentationParameters->BackBufferFormat == WINED3DFMT_UNKNOWN) {
@@ -1137,6 +1136,23 @@ static HRESULT WINAPI IWineD3DDeviceImpl_CreateSwapChain(IWineD3DDevice *iface,
        }
    }

+    if(wined3d_settings.offscreen_rendering_mode == ORM_FBO)
+    {
+        if(pPresentationParameters->BackBufferWidth != client_rect.right ||
+           pPresentationParameters->BackBufferHeight != client_rect.bottom)
+        {
+            TRACE("Rendering to FBO. Backbuffer %ux%u, window %ux%u\n",
+                pPresentationParameters->BackBufferWidth,
+                pPresentationParameters->BackBufferHeight,
+                client_rect.right, client_rect.bottom);
+            object->render_to_fbo = TRUE;
+        }
+        else
+        {
+            TRACE("Rendering directly to GL_BACK\n");
+        }
+    }
+
    /* Put the correct figures in the presentation parameters */
    TRACE("Copying across presentation parameters\n");
    object->presentParms = *pPresentationParameters;
@@ -1210,6 +1226,7 @@ static HRESULT WINAPI IWineD3DDeviceImpl_CreateSwapChain(IWineD3DDevice *iface,
            TRACE("Context created (HWND=%p, glContext=%p)\n",
                object->win_handle, object->context[0]->glCtx);
        }
+        object->context[0]->render_offscreen = object->render_to_fbo;
    }
    else
    {
@@ -6911,6 +6928,27 @@ static HRESULT WINAPI IWineD3DDeviceImpl_Reset(IWineD3DDevice* iface, WINED3DPRE
        ERR("Resetting the stateblock failed with error 0x%08x\n", hr);
    }

+    if(wined3d_settings.offscreen_rendering_mode == ORM_FBO)
+    {
+        RECT client_rect;
+        GetClientRect(swapchain->win_handle, &client_rect);
+
+        if(swapchain->presentParms.BackBufferWidth != client_rect.right ||
+           swapchain->presentParms.BackBufferHeight != client_rect.bottom)
+        {
+            TRACE("Rendering to FBO. Backbuffer %ux%u, window %ux%u\n",
+                    swapchain->presentParms.BackBufferWidth,
+                    swapchain->presentParms.BackBufferHeight,
+                    client_rect.right, client_rect.bottom);
+            swapchain->render_to_fbo = TRUE;
+        }
+        else
+        {
+            TRACE("Rendering directly to GL_BACK\n");
+            swapchain->render_to_fbo = FALSE;
+        }
+    }
+
    hr = create_primary_opengl_context(iface, (IWineD3DSwapChain *) swapchain);
    IWineD3DSwapChain_Release((IWineD3DSwapChain *) swapchain);