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wined3d: Offscreen rendering from foreign threads.

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This commit is contained in:
Stefan Dösinger 2007-07-04 16:47:22 +02:00 committed by Alexandre Julliard
parent f13f48876c
commit 9928a4c4fd
1 changed files with 44 additions and 21 deletions
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65
dlls/wined3d/context.c
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@ -628,6 +628,27 @@ static inline void SetupForBlit(IWineD3DDeviceImpl *This, WineD3DContext *contex
}
}
/*****************************************************************************
* findThreadContextForSwapChain
*
* Searches a swapchain for all contexts and picks one for the thread tid.
* If none can be found the swapchain is requested to create a new context
*
*****************************************************************************/
static WineD3DContext *findThreadContextForSwapChain(IWineD3DSwapChain *swapchain, DWORD tid) {
int i;
for(i = 0; i < ((IWineD3DSwapChainImpl *) swapchain)->num_contexts; i++) {
if(((IWineD3DSwapChainImpl *) swapchain)->context[i]->tid == tid) {
return ((IWineD3DSwapChainImpl *) swapchain)->context[i];
}
}
/* Create a new context for the thread */
return IWineD3DSwapChainImpl_CreateContextForThread(swapchain);
}
/*****************************************************************************
* ActivateContext
*
@ -660,17 +681,8 @@ void ActivateContext(IWineD3DDeviceImpl *This, IWineD3DSurface *target, ContextU
if(hr == WINED3D_OK && swapchain) {
TRACE("Rendering onscreen\n");
context = NULL;
for(i = 0; i < ((IWineD3DSwapChainImpl *) swapchain)->num_contexts; i++) {
if(((IWineD3DSwapChainImpl *) swapchain)->context[i]->tid == tid) {
context = ((IWineD3DSwapChainImpl *) swapchain)->context[i];
}
}
context = findThreadContextForSwapChain(swapchain, tid);
if(!context) {
/* Create a new context for the thread */
context = IWineD3DSwapChainImpl_CreateContextForThread(swapchain);
}
This->render_offscreen = FALSE;
/* The context != This->activeContext will catch a NOP context change. This can occur
* if we are switching back to swapchain rendering in case of FBO or Back Buffer offscreen
@ -685,6 +697,10 @@ void ActivateContext(IWineD3DDeviceImpl *This, IWineD3DSurface *target, ContextU
glDrawBuffer(GL_FRONT);
checkGLcall("glDrawBuffer(GL_FRONT)");
}
} else if(wined3d_settings.offscreen_rendering_mode == ORM_PBUFFER) {
if(This->pbufferContext && tid == This->pbufferContext->tid) {
This->pbufferContext->tid = 0;
}
}
IWineD3DSwapChain_Release(swapchain);
@ -699,21 +715,20 @@ void ActivateContext(IWineD3DDeviceImpl *This, IWineD3DSurface *target, ContextU
TRACE("Rendering offscreen\n");
This->render_offscreen = TRUE;
if(tid != This->lastThread) {
FIXME("Offscreen rendering is only supported from the creation thread yet\n");
FIXME("Expect a crash now ...\n");
}
switch(wined3d_settings.offscreen_rendering_mode) {
case ORM_FBO:
/* FBOs do not need a different context. Stay with whatever context is active at the moment */
if(This->activeContext) {
if(This->activeContext && tid == This->lastThread) {
context = This->activeContext;
} else {
/* This may happen if the app jumps streight into offscreen rendering
* Start using the context of the primary swapchain
* Start using the context of the primary swapchain. tid == 0 is no problem
* for findThreadContextForSwapChain.
*
* Can also happen on thread switches - in that case findThreadContextForSwapChain
* is perfect to call.
*/
context = ((IWineD3DSwapChainImpl *) This->swapchains[0])->context[0];
context = findThreadContextForSwapChain(This->swapchains[0], tid);
}
break;
@ -738,6 +753,10 @@ void ActivateContext(IWineD3DDeviceImpl *This, IWineD3DSurface *target, ContextU
}
if(This->pbufferContext) {
if(This->pbufferContext->tid != 0 && This->pbufferContext->tid != tid) {
FIXME("The PBuffr context is only supported for one thread for now!\n");
}
This->pbufferContext->tid = tid;
context = This->pbufferContext;
break;
} else {
@ -748,13 +767,17 @@ void ActivateContext(IWineD3DDeviceImpl *This, IWineD3DSurface *target, ContextU
case ORM_BACKBUFFER:
/* Stay with the currently active context for back buffer rendering */
if(This->activeContext) {
if(This->activeContext && tid == This->lastThread) {
context = This->activeContext;
} else {
/* This may happen if the app jumps streight into offscreen rendering
* Start using the context of the primary swapchain
* Start using the context of the primary swapchain. tid == 0 is no problem
* for findThreadContextForSwapChain.
*
* Can also happen on thread switches - in that case findThreadContextForSwapChain
* is perfect to call.
*/
context = ((IWineD3DSwapChainImpl *) This->swapchains[0])->context[0];
context = findThreadContextForSwapChain(This->swapchains[0], tid);
}
glDrawBuffer(This->offscreenBuffer);
checkGLcall("glDrawBuffer(This->offscreenBuffer)");