public static unsafe void SetSDLGLContextAttributes(GraphicsDeviceOptions options, GraphicsBackend backend)
{
if (backend != GraphicsBackend.OpenGL && backend != GraphicsBackend.OpenGLES)
{
throw new VeldridException(
$"{nameof(backend)} must be {nameof(GraphicsBackend.OpenGL)} or {nameof(GraphicsBackend.OpenGLES)}.");
}
SDL_GLContextFlag contextFlags = options.Debug ? SDL_GLContextFlag.Debug | SDL_GLContextFlag.ForwardCompatible : SDL_GLContextFlag.ForwardCompatible;
Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.ContextFlags, (int)contextFlags);
SetMaxGLVersion(backend == GraphicsBackend.OpenGLES);
int depthBits = 0;
int stencilBits = 0;
if (options.SwapchainDepthFormat.HasValue)
{
switch (options.SwapchainDepthFormat)
{
case PixelFormat.R16_UNorm:
depthBits = 16;
break;
case PixelFormat.D24_UNorm_S8_UInt:
depthBits = 24;
stencilBits = 8;
break;
case PixelFormat.R32_Float:
depthBits = 32;
break;
case PixelFormat.D32_Float_S8_UInt:
depthBits = 32;
stencilBits = 8;
break;
default:
throw new VeldridException("Invalid depth format: " + options.SwapchainDepthFormat.Value);
}
}
Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.DepthSize, depthBits);
Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.StencilSize, stencilBits);
if (options.SwapchainSrgbFormat)
{
Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.FramebufferSrgbCapable, 1);
}
else
{
Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.FramebufferSrgbCapable, 0);
}
}
private static OpenGLESRenderContext CreateDefaultOpenGLESRenderContext(Sdl2Window window)
{
bool debugContext = false;
debugContext |= s_allowDebugContexts;
if (debugContext)
{
Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.ContextFlags, (int)SDL_GLContextFlag.Debug);
}
IntPtr sdlHandle = window.SdlWindowHandle;
Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.ContextProfileMask, (int)SDL_GLProfile.ES);
Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.ContextMajorVersion, 3);
Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.ContextMinorVersion, 0);
IntPtr contextHandle = Sdl2Native.SDL_GL_CreateContext(sdlHandle);
Sdl2Native.SDL_GL_MakeCurrent(sdlHandle, contextHandle);
if (contextHandle == IntPtr.Zero)
{
unsafe
{
byte * error = Sdl2Native.SDL_GetError();
string errorString = Utilities.GetString(error);
throw new InvalidOperationException("Unable to create GL Context: " + errorString);
}
}
Sdl2Native.SDL_GL_MakeCurrent(sdlHandle, contextHandle);
OpenGLPlatformContextInfo ci = new OpenGLPlatformContextInfo(
contextHandle,
Sdl2Native.SDL_GL_GetProcAddress,
Sdl2Native.SDL_GL_GetCurrentContext,
() => Sdl2Native.SDL_GL_SwapWindow(sdlHandle));
var rc = new OpenGLESRenderContext(window, ci);
if (debugContext)
{
rc.EnableDebugCallback(OpenTK.Graphics.ES30.DebugSeverity.DebugSeverityNotification);
}
return(rc);
}
public static unsafe GraphicsDevice CreateOpenGLGraphicsDevice(Sdl2Window window, GraphicsDeviceOptions options)
{
Sdl2Native.SDL_ClearError();
var sdlHandle = window.SdlWindowHandle;
SDL_SysWMinfo sdlSysWmInfo;
Sdl2Native.SDL_GetVersion(&sdlSysWmInfo.version);
Sdl2Native.SDL_GetWMWindowInfo(sdlHandle, &sdlSysWmInfo);
Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.ContextFlags, options.Debug ? 3 : 2);
Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.ContextProfileMask, 1);
Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.ContextMajorVersion, 4);
Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.ContextMinorVersion, 1);
options.SwapchainDepthFormat = PixelFormat.D32_Float_S8_UInt;
Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.DepthSize, 32);
Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.StencilSize, 8);
var contextHandle = Sdl2Native.SDL_GL_CreateContext(sdlHandle);
var error = Sdl2Native.SDL_GetError();
if ((IntPtr)error != IntPtr.Zero)
{
var str = GetString(error);
if (!string.IsNullOrEmpty(str))
{
throw new VeldridException(string.Format("Unable to create OpenGL Context: \"{0}\". This may indicate that the system does not support the requested OpenGL profile, version, or Swapchain format.", str));
}
}
int num1;
Sdl2Native.SDL_GL_GetAttribute(SDL_GLAttribute.DepthSize, &num1);
int num2;
Sdl2Native.SDL_GL_GetAttribute(SDL_GLAttribute.StencilSize, &num2);
Sdl2Native.SDL_GL_SetSwapInterval(options.SyncToVerticalBlank ? 1 : 0);
var getProcAddress = new Func <string, IntPtr>(Sdl2Native.SDL_GL_GetProcAddress);
var makeCurrent = (Action <IntPtr>)(context => Sdl2Native.SDL_GL_MakeCurrent(sdlHandle, context));
var deleteContext = new Action <IntPtr>(Sdl2Native.SDL_GL_DeleteContext);
var swapBuffers = (Action)(() => Sdl2Native.SDL_GL_SwapWindow(sdlHandle));
var platformInfo = new OpenGLPlatformInfo(contextHandle, getProcAddress, makeCurrent, Sdl2Native.SDL_GL_GetCurrentContext, () => Sdl2Native.SDL_GL_MakeCurrent(new SDL_Window(IntPtr.Zero), IntPtr.Zero), deleteContext, swapBuffers, sync => Sdl2Native.SDL_GL_SetSwapInterval(sync ? 1 : 0));
return(GraphicsDevice.CreateOpenGL(options, platformInfo, (uint)window.Width, (uint)window.Height));
}
private static OpenGLRenderContext CreateDefaultOpenGLRenderContext(Sdl2Window window)
{
bool debugContext = false;
#if DEBUG
debugContext = Preferences.Instance.AllowOpenGLDebugContexts;
#endif
IntPtr sdlHandle = window.SdlWindowHandle;
if (debugContext)
{
Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.ContextFlags, (int)SDL_GLContextFlag.Debug);
}
Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.ContextProfileMask, (int)SDL_GLProfile.Core);
Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.ContextMajorVersion, 4);
Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.ContextMinorVersion, 0);
IntPtr contextHandle = Sdl2Native.SDL_GL_CreateContext(sdlHandle);
if (contextHandle == IntPtr.Zero)
{
unsafe
{
byte * error = Sdl2Native.SDL_GetError();
string errorString = Utilities.GetString(error);
throw new InvalidOperationException("Unable to create GL Context: " + errorString);
}
}
Sdl2Native.SDL_GL_MakeCurrent(sdlHandle, contextHandle);
OpenGLPlatformContextInfo ci = new OpenGLPlatformContextInfo(
contextHandle,
Sdl2Native.SDL_GL_GetProcAddress,
Sdl2Native.SDL_GL_GetCurrentContext,
() => Sdl2Native.SDL_GL_SwapWindow(sdlHandle));
var rc = new OpenGLRenderContext(window, ci);
if (debugContext)
{
// Slows things down significantly -- Only use when debugging something specific.
rc.EnableDebugCallback(OpenTK.Graphics.OpenGL.DebugSeverity.DebugSeverityNotification);
}
return(rc);
}
//public static OpenGLESRenderContext CreateDefaultOpenGLESRenderContext(ref RenderContextCreateInfo contextCI, Sdl2Window window)
//{
// if (contextCI.DebugContext)
// {
// Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.ContextFlags, (int)SDL_GLContextFlag.Debug);
// }
// IntPtr sdlHandle = window.SdlWindowHandle;
// Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.ContextProfileMask, (int)SDL_GLProfile.ES);
// Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.ContextMajorVersion, 3);
// Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.ContextMinorVersion, 0);
// IntPtr contextHandle = Sdl2Native.SDL_GL_CreateContext(sdlHandle);
// Sdl2Native.SDL_GL_MakeCurrent(sdlHandle, contextHandle);
// if (contextHandle == IntPtr.Zero)
// {
// unsafe
// {
// byte* error = Sdl2Native.SDL_GetError();
// string errorString = Utilities.GetString(error);
// throw new VeldridException("Unable to create GL Context: " + errorString);
// }
// }
// OpenGLPlatformContextInfo ci = new OpenGLPlatformContextInfo(
// contextHandle,
// Sdl2Native.SDL_GL_GetProcAddress,
// Sdl2Native.SDL_GL_GetCurrentContext,
// () => Sdl2Native.SDL_GL_SwapWindow(sdlHandle));
// OpenGLESRenderContext rc = new OpenGLESRenderContext(window, ci);
// if (contextCI.DebugContext)
// {
// rc.EnableDebugCallback(OpenTK.Graphics.ES30.DebugSeverity.DebugSeverityLow);
// }
// return rc;
//}
public static GraphicsDevice CreateDefaultOpenGLRenderContext(ref GraphicsDeviceCreateInfo gdCI, Sdl2Window window)
{
IntPtr sdlHandle = window.SdlWindowHandle;
if (gdCI.DebugDevice)
{
Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.ContextFlags, (int)SDL_GLContextFlag.Debug);
}
Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.ContextProfileMask, (int)SDL_GLProfile.Core);
Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.ContextMajorVersion, 4);
Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.ContextMinorVersion, 0);
IntPtr contextHandle = Sdl2Native.SDL_GL_CreateContext(sdlHandle);
if (contextHandle == IntPtr.Zero)
{
unsafe
{
byte * error = Sdl2Native.SDL_GetError();
string errorString = GetString(error);
throw new VeldridException("Unable to create GL Context: " + errorString);
}
}
int result = Sdl2Native.SDL_GL_SetSwapInterval(0);
OpenGLPlatformInfo platformInfo = new OpenGLPlatformInfo(
contextHandle,
Sdl2Native.SDL_GL_GetProcAddress,
context => Sdl2Native.SDL_GL_MakeCurrent(sdlHandle, context),
Sdl2Native.SDL_GL_DeleteContext,
() => Sdl2Native.SDL_GL_SwapWindow(sdlHandle));
return(Hacks.CreateOpenGL(
platformInfo,
(uint)window.Width,
(uint)window.Height,
gdCI.DebugDevice));
}
public static GraphicsDevice CreateDefaultOpenGLGraphicsDevice(GraphicsDeviceOptions options, Sdl2Window window)
{
IntPtr sdlHandle = window.SdlWindowHandle;
if (options.Debug)
{
Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.ContextFlags, (int)SDL_GLContextFlag.Debug);
}
Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.ContextProfileMask, (int)SDL_GLProfile.Core);
Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.ContextMajorVersion, 4);
Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.ContextMinorVersion, 0);
int depthBits = 0;
if (options.SwapchainDepthFormat.HasValue)
{
switch (options.SwapchainDepthFormat)
{
case PixelFormat.R16_UNorm:
depthBits = 16;
break;
case PixelFormat.R32_Float:
depthBits = 32;
break;
default:
throw new VeldridException("Invalid depth format: " + options.SwapchainDepthFormat.Value);
}
}
Sdl2Native.SDL_GL_SetAttribute(SDL_GLAttribute.DepthSize, depthBits);
IntPtr contextHandle = Sdl2Native.SDL_GL_CreateContext(sdlHandle);
if (contextHandle == IntPtr.Zero)
{
unsafe
{
byte * error = Sdl2Native.SDL_GetError();
string errorString = GetString(error);
throw new VeldridException("Unable to create GL Context: " + errorString);
}
}
int result = Sdl2Native.SDL_GL_SetSwapInterval(options.SyncToVerticalBlank ? 1 : 0);
OpenGLPlatformInfo platformInfo = new OpenGLPlatformInfo(
contextHandle,
Sdl2Native.SDL_GL_GetProcAddress,
context => Sdl2Native.SDL_GL_MakeCurrent(sdlHandle, context),
() => Sdl2Native.SDL_GL_GetCurrentContext(),
() => Sdl2Native.SDL_GL_MakeCurrent(new SDL_Window(IntPtr.Zero), IntPtr.Zero),
Sdl2Native.SDL_GL_DeleteContext,
() => Sdl2Native.SDL_GL_SwapWindow(sdlHandle),
sync => Sdl2Native.SDL_GL_SetSwapInterval(sync ? 1 : 0));
return(GraphicsDevice.CreateOpenGL(
options,
platformInfo,
(uint)window.Width,
(uint)window.Height));
}