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Add support for non main thread rendering for WGL and NSGL when developer provides context (#2241)

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* WGL support for passing a context when using renderFrame on non main thread

* NSGL support for passing a context when using renderFrame on non main thread

* WGL: Moved no window warning and added check prior to calling GetDC
This commit is contained in:
Doug Binks
2020-08-25 15:47:46 +01:00
committed by GitHub
parent f20fd61e4f
commit ab036d2a05
2 changed files with 36 additions and 7 deletions
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30
src/glcontext_wgl.cpp
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@@ -109,14 +109,32 @@ namespace bgfx { namespace gl
wglGetProcAddress = (PFNWGLGETPROCADDRESSPROC)bx::dlsym(m_opengl32dll, "wglGetProcAddress");
BGFX_FATAL(NULL != wglGetProcAddress, Fatal::UnableToInitialize, "Failed get wglGetProcAddress.");
// If g_platformHooks.nwh is NULL, the assumption is that GL context was created
// by user (for example, using SDL, GLFW, etc.)
BX_WARN(NULL != g_platformData.nwh
, "bgfx::setPlatform with valid window is not called. This might "
"be intentional when GL context is created by the user."
"be intentional when GL context is created by the user."
);
if (NULL != g_platformData.nwh)
if (NULL != g_platformData.nwh && NULL != g_platformData.context )
{
// user has provided a context and a window
wglMakeCurrent = (PFNWGLMAKECURRENTPROC)bx::dlsym(m_opengl32dll, "wglMakeCurrent");
BGFX_FATAL(NULL != wglMakeCurrent, Fatal::UnableToInitialize, "Failed get wglMakeCurrent.");
m_hdc = GetDC( (HWND)g_platformData.nwh);
BGFX_FATAL(NULL != m_hdc, Fatal::UnableToInitialize, "GetDC failed!");
HGLRC context = (HGLRC)g_platformData.context;
int result = wglMakeCurrent(m_hdc, context );
BGFX_FATAL(0 != result, Fatal::UnableToInitialize, "wglMakeCurrent failed!");
m_context = context;
}
if (NULL != g_platformData.nwh && NULL == g_platformData.context )
{
wglMakeCurrent = (PFNWGLMAKECURRENTPROC)bx::dlsym(m_opengl32dll, "wglMakeCurrent");
BGFX_FATAL(NULL != wglMakeCurrent, Fatal::UnableToInitialize, "Failed get wglMakeCurrent.");
@@ -283,8 +301,12 @@ namespace bgfx { namespace gl
{
wglMakeCurrent(NULL, NULL);
wglDeleteContext(m_context);
m_context = NULL;
if (NULL == g_platformData.context)
{
wglDeleteContext(m_context);
m_context = NULL;
}
ReleaseDC( (HWND)g_platformData.nwh, m_hdc);
m_hdc = NULL;