void GlContext::create(uint32_t _width, uint32_t _height)
{
# if BX_PLATFORM_RPI
bcm_host_init();
# endif // BX_PLATFORM_RPI
m_eglLibrary = eglOpen();
if (NULL == g_platformData.context)
{
# if BX_PLATFORM_RPI
g_platformData.ndt = EGL_DEFAULT_DISPLAY;
# endif // BX_PLATFORM_RPI
BX_UNUSED(_width, _height);
EGLNativeDisplayType ndt = (EGLNativeDisplayType)g_platformData.ndt;
EGLNativeWindowType nwh = (EGLNativeWindowType )g_platformData.nwh;
# if BX_PLATFORM_WINDOWS
if (NULL == g_platformData.ndt)
{
ndt = GetDC( (HWND)g_platformData.nwh);
}
# endif // BX_PLATFORM_WINDOWS
m_display = eglGetDisplay(ndt);
BGFX_FATAL(m_display != EGL_NO_DISPLAY, Fatal::UnableToInitialize, "Failed to create display %p", m_display);
EGLint major = 0;
EGLint minor = 0;
EGLBoolean success = eglInitialize(m_display, &major, &minor);
BGFX_FATAL(success && major >= 1 && minor >= 3, Fatal::UnableToInitialize, "Failed to initialize %d.%d", major, minor);
BX_TRACE("EGL info:");
const char* clientApis = eglQueryString(m_display, EGL_CLIENT_APIS);
BX_TRACE(" APIs: %s", clientApis); BX_UNUSED(clientApis);
const char* vendor = eglQueryString(m_display, EGL_VENDOR);
BX_TRACE(" Vendor: %s", vendor); BX_UNUSED(vendor);
const char* version = eglQueryString(m_display, EGL_VERSION);
BX_TRACE("Version: %s", version); BX_UNUSED(version);
const char* extensions = eglQueryString(m_display, EGL_EXTENSIONS);
BX_TRACE("Supported EGL extensions:");
dumpExtensions(extensions);
EGLint attrs[] =
{
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
# if BX_PLATFORM_ANDROID
EGL_DEPTH_SIZE, 16,
# else
EGL_DEPTH_SIZE, 24,
# endif // BX_PLATFORM_
EGL_STENCIL_SIZE, 8,
EGL_NONE
};
EGLint numConfig = 0;
success = eglChooseConfig(m_display, attrs, &m_config, 1, &numConfig);
BGFX_FATAL(success, Fatal::UnableToInitialize, "eglChooseConfig");
# if BX_PLATFORM_ANDROID
EGLint format;
eglGetConfigAttrib(m_display, m_config, EGL_NATIVE_VISUAL_ID, &format);
ANativeWindow_setBuffersGeometry( (ANativeWindow*)g_platformData.nwh, _width, _height, format);
# elif BX_PLATFORM_RPI
DISPMANX_DISPLAY_HANDLE_T dispmanDisplay = vc_dispmanx_display_open(0);
DISPMANX_UPDATE_HANDLE_T dispmanUpdate = vc_dispmanx_update_start(0);
VC_RECT_T dstRect = { 0, 0, int32_t(_width), int32_t(_height) };
VC_RECT_T srcRect = { 0, 0, int32_t(_width) << 16, int32_t(_height) << 16 };
DISPMANX_ELEMENT_HANDLE_T dispmanElement = vc_dispmanx_element_add(dispmanUpdate
, dispmanDisplay
, 0
, &dstRect
, 0
, &srcRect
, DISPMANX_PROTECTION_NONE
, NULL
, NULL
, DISPMANX_NO_ROTATE
);
s_dispmanWindow.element = dispmanElement;
s_dispmanWindow.width = _width;
s_dispmanWindow.height = _height;
nwh = &s_dispmanWindow;
vc_dispmanx_update_submit_sync(dispmanUpdate);
# endif // BX_PLATFORM_ANDROID
m_surface = eglCreateWindowSurface(m_display, m_config, nwh, NULL);
BGFX_FATAL(m_surface != EGL_NO_SURFACE, Fatal::UnableToInitialize, "Failed to create surface.");
const bool hasEglKhrCreateContext = !!bx::findIdentifierMatch(extensions, "EGL_KHR_create_context");
const bool hasEglKhrNoError = !!bx::findIdentifierMatch(extensions, "EGL_KHR_create_context_no_error");
const uint32_t gles = BGFX_CONFIG_RENDERER_OPENGLES;
for (uint32_t ii = 0; ii < 2; ++ii)
{
bx::StaticMemoryBlockWriter writer(s_contextAttrs, sizeof(s_contextAttrs) );
EGLint flags = 0;
# if BX_PLATFORM_RPI
BX_UNUSED(hasEglKhrCreateContext, hasEglKhrNoError);
# else
if (hasEglKhrCreateContext)
{
bx::write(&writer, EGLint(EGL_CONTEXT_MAJOR_VERSION_KHR) );
bx::write(&writer, EGLint(gles / 10) );
bx::write(&writer, EGLint(EGL_CONTEXT_MINOR_VERSION_KHR) );
bx::write(&writer, EGLint(gles % 10) );
flags |= BGFX_CONFIG_DEBUG && hasEglKhrNoError ? 0
| EGL_CONTEXT_FLAG_NO_ERROR_BIT_KHR
: 0
;
if (0 == ii)
{
flags |= BGFX_CONFIG_DEBUG ? 0
| EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR
// | EGL_OPENGL_ES3_BIT_KHR
: 0
;
bx::write(&writer, EGLint(EGL_CONTEXT_FLAGS_KHR) );
bx::write(&writer, flags);
}
}
else
# endif // BX_PLATFORM_RPI
{
bx::write(&writer, EGLint(EGL_CONTEXT_CLIENT_VERSION) );
bx::write(&writer, 2);
}
bx::write(&writer, EGLint(EGL_NONE) );
m_context = eglCreateContext(m_display, m_config, EGL_NO_CONTEXT, s_contextAttrs);
if (NULL != m_context)
{
break;
}
BX_TRACE("Failed to create EGL context with EGL_CONTEXT_FLAGS_KHR (%08x).", flags);
}
BGFX_FATAL(m_context != EGL_NO_CONTEXT, Fatal::UnableToInitialize, "Failed to create context.");
success = eglMakeCurrent(m_display, m_surface, m_surface, m_context);
BGFX_FATAL(success, Fatal::UnableToInitialize, "Failed to set context.");
m_current = NULL;
eglSwapInterval(m_display, 0);
}
import();
g_internalData.context = m_context;
}
void GlContext::create(uint32_t _width, uint32_t _height)
{
BX_UNUSED(_width, _height);
XLockDisplay(s_display);
int major, minor;
bool version = glXQueryVersion(s_display, &major, &minor);
BGFX_FATAL(version, Fatal::UnableToInitialize, "Failed to query GLX version");
BGFX_FATAL( (major == 1 && minor >= 2) || major > 1
, Fatal::UnableToInitialize
, "GLX version is not >=1.2 (%d.%d)."
, major
, minor
);
int32_t screen = DefaultScreen(s_display);
const char* extensions = glXQueryExtensionsString(s_display, screen);
BX_TRACE("GLX extensions:");
dumpExtensions(extensions);
const int attrsGlx[] =
{
GLX_RENDER_TYPE, GLX_RGBA_BIT,
GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT,
GLX_DOUBLEBUFFER, true,
GLX_RED_SIZE, 8,
GLX_BLUE_SIZE, 8,
GLX_GREEN_SIZE, 8,
// GLX_ALPHA_SIZE, 8,
GLX_DEPTH_SIZE, 24,
GLX_STENCIL_SIZE, 8,
0,
};
// Find suitable config
GLXFBConfig bestConfig = NULL;
int numConfigs;
GLXFBConfig* configs = glXChooseFBConfig(s_display, screen, attrsGlx, &numConfigs);
BX_TRACE("glX num configs %d", numConfigs);
XVisualInfo* visualInfo = NULL;
for (int ii = 0; ii < numConfigs; ++ii)
{
visualInfo = glXGetVisualFromFBConfig(s_display, configs[ii]);
if (NULL != visualInfo)
{
BX_TRACE("---");
bool valid = true;
for (uint32_t attr = 6; attr < BX_COUNTOF(attrsGlx)-1 && attrsGlx[attr] != None; attr += 2)
{
int value;
glXGetFBConfigAttrib(s_display, configs[ii], attrsGlx[attr], &value);
BX_TRACE("glX %d/%d %2d: %4x, %8x (%8x%s)"
, ii
, numConfigs
, attr/2
, attrsGlx[attr]
, value
, attrsGlx[attr + 1]
, value < attrsGlx[attr + 1] ? " *" : ""
);
if (value < attrsGlx[attr + 1])
{
valid = false;
#if !BGFX_CONFIG_DEBUG
break;
#endif // BGFX_CONFIG_DEBUG
}
}
if (valid)
{
bestConfig = configs[ii];
BX_TRACE("Best config %d.", ii);
break;
}
}
XFree(visualInfo);
visualInfo = NULL;
}
XFree(configs);
BGFX_FATAL(visualInfo, Fatal::UnableToInitialize, "Failed to find a suitable X11 display configuration.");
BX_TRACE("Create GL 2.1 context.");
m_context = glXCreateContext(s_display, visualInfo, 0, GL_TRUE);
BGFX_FATAL(NULL != m_context, Fatal::UnableToInitialize, "Failed to create GL 2.1 context.");
XFree(visualInfo);
#if BGFX_CONFIG_RENDERER_OPENGL >= 31
glXCreateContextAttribsARB = (PFNGLXCREATECONTEXTATTRIBSARBPROC)glXGetProcAddress( (const GLubyte*)"glXCreateContextAttribsARB");
if (NULL != glXCreateContextAttribsARB)
{
BX_TRACE("Create GL 3.1 context.");
const int contextAttrs[] =
{
GLX_CONTEXT_MAJOR_VERSION_ARB, 3,
GLX_CONTEXT_MINOR_VERSION_ARB, 1,
GLX_CONTEXT_PROFILE_MASK_ARB, GLX_CONTEXT_CORE_PROFILE_BIT_ARB,
0,
};
GLXContext context = glXCreateContextAttribsARB(s_display, bestConfig, 0, true, contextAttrs);
if (NULL != context)
{
glXDestroyContext(s_display, m_context);
m_context = context;
}
}
#else
BX_UNUSED(bestConfig);
#endif // BGFX_CONFIG_RENDERER_OPENGL >= 31
XUnlockDisplay(s_display);
import();
glXMakeCurrent(s_display, s_window, m_context);
glXSwapIntervalEXT = (PFNGLXSWAPINTERVALEXTPROC)glXGetProcAddress( (const GLubyte*)"glXSwapIntervalEXT");
if (NULL != glXSwapIntervalEXT)
{
BX_TRACE("Using glXSwapIntervalEXT.");
glXSwapIntervalEXT(s_display, s_window, 0);
}
else
{
glXSwapIntervalMESA = (PFNGLXSWAPINTERVALMESAPROC)glXGetProcAddress( (const GLubyte*)"glXSwapIntervalMESA");
if (NULL != glXSwapIntervalMESA)
{
BX_TRACE("Using glXSwapIntervalMESA.");
glXSwapIntervalMESA(0);
}
else
{
glXSwapIntervalSGI = (PFNGLXSWAPINTERVALSGIPROC)glXGetProcAddress( (const GLubyte*)"glXSwapIntervalSGI");
if (NULL != glXSwapIntervalSGI)
{
BX_TRACE("Using glXSwapIntervalSGI.");
glXSwapIntervalSGI(0);
}
}
}
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
glXSwapBuffers(s_display, s_window);
}
void GlContext::create(uint32_t /*_width*/, uint32_t /*_height*/)
{
m_opengl32dll = bx::dlopen("opengl32.dll");
BGFX_FATAL(NULL != m_opengl32dll, Fatal::UnableToInitialize, "Failed to load opengl32.dll.");
wglGetProcAddress = (PFNWGLGETPROCADDRESSPROC)bx::dlsym(m_opengl32dll, "wglGetProcAddress");
BGFX_FATAL(NULL != wglGetProcAddress, Fatal::UnableToInitialize, "Failed get wglGetProcAddress.");
// If g_bgfxHwnd is NULL, the assumption is that GL context was created
// by user (for example, using SDL, GLFW, etc.)
BX_WARN(NULL != g_bgfxHwnd
, "bgfx::winSetHwnd with valid window is not called. This might "
"be intentional when GL context is created by the user."
);
if (NULL != g_bgfxHwnd)
{
wglMakeCurrent = (PFNWGLMAKECURRENTPROC)bx::dlsym(m_opengl32dll, "wglMakeCurrent");
BGFX_FATAL(NULL != wglMakeCurrent, Fatal::UnableToInitialize, "Failed get wglMakeCurrent.");
wglCreateContext = (PFNWGLCREATECONTEXTPROC)bx::dlsym(m_opengl32dll, "wglCreateContext");
BGFX_FATAL(NULL != wglCreateContext, Fatal::UnableToInitialize, "Failed get wglCreateContext.");
wglDeleteContext = (PFNWGLDELETECONTEXTPROC)bx::dlsym(m_opengl32dll, "wglDeleteContext");
BGFX_FATAL(NULL != wglDeleteContext, Fatal::UnableToInitialize, "Failed get wglDeleteContext.");
m_hdc = GetDC(g_bgfxHwnd);
BGFX_FATAL(NULL != m_hdc, Fatal::UnableToInitialize, "GetDC failed!");
// Dummy window to peek into WGL functionality.
//
// An application can only set the pixel format of a window one time.
// Once a window's pixel format is set, it cannot be changed.
// MSDN: http://msdn.microsoft.com/en-us/library/windows/desktop/dd369049%28v=vs.85%29.aspx
HWND hwnd = CreateWindowA("STATIC"
, ""
, WS_POPUP|WS_DISABLED
, -32000
, -32000
, 0
, 0
, NULL
, NULL
, GetModuleHandle(NULL)
, 0
);
HDC hdc = GetDC(hwnd);
BGFX_FATAL(NULL != hdc, Fatal::UnableToInitialize, "GetDC failed!");
HGLRC context = createContext(hdc);
wglGetExtensionsStringARB = (PFNWGLGETEXTENSIONSSTRINGARBPROC)wglGetProcAddress("wglGetExtensionsStringARB");
wglChoosePixelFormatARB = (PFNWGLCHOOSEPIXELFORMATARBPROC)wglGetProcAddress("wglChoosePixelFormatARB");
wglCreateContextAttribsARB = (PFNWGLCREATECONTEXTATTRIBSARBPROC)wglGetProcAddress("wglCreateContextAttribsARB");
wglSwapIntervalEXT = (PFNWGLSWAPINTERVALEXTPROC)wglGetProcAddress("wglSwapIntervalEXT");
if (NULL != wglGetExtensionsStringARB)
{
const char* extensions = (const char*)wglGetExtensionsStringARB(hdc);
BX_TRACE("WGL extensions:");
dumpExtensions(extensions);
}
if (NULL != wglChoosePixelFormatARB
&& NULL != wglCreateContextAttribsARB)
{
int32_t attrs[] =
{
WGL_SAMPLE_BUFFERS_ARB, 0,
WGL_SAMPLES_ARB, 0,
WGL_SUPPORT_OPENGL_ARB, true,
WGL_PIXEL_TYPE_ARB, WGL_TYPE_RGBA_ARB,
WGL_DRAW_TO_WINDOW_ARB, true,
WGL_DOUBLE_BUFFER_ARB, true,
WGL_COLOR_BITS_ARB, 32,
WGL_DEPTH_BITS_ARB, 24,
WGL_STENCIL_BITS_ARB, 8,
0
};
int result;
uint32_t numFormats = 0;
do
{
result = wglChoosePixelFormatARB(m_hdc, attrs, NULL, 1, &m_pixelFormat, &numFormats);
if (0 == result
|| 0 == numFormats)
{
attrs[3] >>= 1;
attrs[1] = attrs[3] == 0 ? 0 : 1;
}
} while (0 == numFormats);
DescribePixelFormat(m_hdc, m_pixelFormat, sizeof(PIXELFORMATDESCRIPTOR), &m_pfd);
BX_TRACE("Pixel format:\n"
"\tiPixelType %d\n"
"\tcColorBits %d\n"
"\tcAlphaBits %d\n"
"\tcDepthBits %d\n"
"\tcStencilBits %d\n"
, m_pfd.iPixelType
, m_pfd.cColorBits
, m_pfd.cAlphaBits
, m_pfd.cDepthBits
, m_pfd.cStencilBits
);
result = SetPixelFormat(m_hdc, m_pixelFormat, &m_pfd);
// When window is created by SDL and SDL_WINDOW_OPENGL is set SetPixelFormat
// will fail. Just warn and continue. In case it failed for some other reason
// create context will fail and it will error out there.
BX_WARN(result, "SetPixelFormat failed (last err: 0x%08x)!", GetLastError() );
uint32_t flags = BGFX_CONFIG_DEBUG ? WGL_CONTEXT_DEBUG_BIT_ARB : 0;
BX_UNUSED(flags);
int32_t contextAttrs[9] =
{
#if BGFX_CONFIG_RENDERER_OPENGL >= 31
WGL_CONTEXT_MAJOR_VERSION_ARB, BGFX_CONFIG_RENDERER_OPENGL / 10,
WGL_CONTEXT_MINOR_VERSION_ARB, BGFX_CONFIG_RENDERER_OPENGL % 10,
WGL_CONTEXT_FLAGS_ARB, flags,
WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_CORE_PROFILE_BIT_ARB,
#else
WGL_CONTEXT_MAJOR_VERSION_ARB, 2,
WGL_CONTEXT_MINOR_VERSION_ARB, 1,
0, 0,
0, 0,
#endif // BGFX_CONFIG_RENDERER_OPENGL >= 31
0
};
m_context = wglCreateContextAttribsARB(m_hdc, 0, contextAttrs);
if (NULL == m_context)
{
// nVidia doesn't like context profile mask for contexts below 3.2?
contextAttrs[6] = WGL_CONTEXT_PROFILE_MASK_ARB == contextAttrs[6] ? 0 : contextAttrs[6];
m_context = wglCreateContextAttribsARB(m_hdc, 0, contextAttrs);
}
BGFX_FATAL(NULL != m_context, Fatal::UnableToInitialize, "Failed to create context 0x%08x.", GetLastError() );
BX_STATIC_ASSERT(sizeof(contextAttrs) == sizeof(m_contextAttrs) );
memcpy(m_contextAttrs, contextAttrs, sizeof(contextAttrs) );
}