/// <summary>
/// Initializes a new instance of the OpenGLUltravioletGraphics class.
/// </summary>
/// <param name="uv">The Ultraviolet context.</param>
/// <param name="configuration">The Ultraviolet Framework configuration settings for the current context.</param>
/// <param name="versionRequested">The OpenGL context version which is requested by the application.</param>
/// <param name="versionRequired">The OpenGL context version which is required by the Ultraviolet Framework.</param>
public unsafe OpenGLUltravioletGraphics(OpenGLUltravioletContext uv, OpenGLUltravioletConfiguration configuration, Version versionRequested, Version versionRequired)
: base(uv)
{
if (this.context == IntPtr.Zero && configuration.Debug)
{
this.context = TryCreateOpenGLContext(uv, versionRequested, versionRequired, true, false) ?? IntPtr.Zero;
}
if (this.context == IntPtr.Zero)
{
this.context = TryCreateOpenGLContext(uv, versionRequested, versionRequired, false, true) ?? IntPtr.Zero;
}
if (SDL_GL_SetSwapInterval(1) < 0 && uv.Platform != UltravioletPlatform.iOS)
{
throw new SDL2Exception();
}
if (gl.Initialized)
{
gl.Uninitialize();
}
gl.Initialize(new OpenGLInitializer());
if (!gl.IsVersionAtLeast(versionRequested ?? versionRequired))
{
throw new InvalidOperationException(OpenGLStrings.DoesNotMeetMinimumVersionRequirement.Format(gl.MajorVersion, gl.MinorVersion, versionRequested.Major, versionRequested.Minor));
}
OpenGLState.ResetCache();
if (!VerifyCapabilities())
{
throw new NotSupportedException(OpenGLStrings.UnsupportedGraphicsDevice);
}
if (configuration.Debug && configuration.DebugCallback != null)
{
InitializeDebugOutput(configuration);
}
this.Capabilities = new OpenGLGraphicsCapabilities(configuration);
if (Capabilities.SrgbEncodingEnabled && gl.IsFramebufferSrgbAvailable)
{
gl.Enable(gl.GL_FRAMEBUFFER_SRGB);
gl.ThrowIfError();
}
this.maxTextureStages = gl.GetInteger(gl.GL_MAX_TEXTURE_IMAGE_UNITS);
this.textures = new Texture[maxTextureStages];
this.samplerStates = new SamplerState[maxTextureStages];
this.samplerObjects = Capabilities.SupportsIndependentSamplerState ? new OpenGLSamplerObject[maxTextureStages] : null;
this.backBufferRenderTargetUsage = configuration.BackBufferRenderTargetUsage;
if (samplerObjects != null)
{
for (int i = 0; i < samplerObjects.Length; i++)
{
samplerObjects[i] = new OpenGLSamplerObject(Ultraviolet);
samplerObjects[i].Bind((uint)i);
}
}
OpenGLState.VerifyCache();
}
/// <summary>
/// Initializes a new instance of the OpenGLUltravioletGraphics class.
/// </summary>
/// <param name="uv">The Ultraviolet context.</param>
/// <param name="configuration">The Ultraviolet Framework configuration settings for the current context.</param>
/// <param name="versionRequested">The OpenGL context version which is required by the application.</param>
public unsafe OpenGLUltravioletGraphics(OpenGLUltravioletContext uv, OpenGLUltravioletConfiguration configuration, Version versionRequested)
: base(uv)
{
var masterptr = ((SDL2UltravioletWindowInfo)uv.GetPlatform().Windows).GetMasterPointer();
if (!TryInitializeGLContext(masterptr, configuration))
{
var attemptedVersionMajor = 0;
var attemptedVersionMinor = 0;
if (SDL_GL_GetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, &attemptedVersionMajor) < 0)
{
throw new SDL2Exception();
}
if (SDL_GL_GetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, &attemptedVersionMinor) < 0)
{
throw new SDL2Exception();
}
var attemptedVersion = new Version(attemptedVersionMajor, attemptedVersionMinor, 0, 0);
var isGLES = (uv.Platform == UltravioletPlatform.Android || uv.Platform == UltravioletPlatform.iOS);
if (isGLES && attemptedVersion >= new Version(3, 0) && (configuration.MinimumOpenGLESVersion ?? new Version(2, 0)) <= new Version(2, 0))
{
if (SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 2) < 0)
{
throw new SDL2Exception();
}
if (SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0) < 0)
{
throw new SDL2Exception();
}
if (!TryInitializeGLContext(masterptr, configuration))
{
throw new SDL2Exception();
}
}
else
{
throw new SDL2Exception();
}
}
if (SDL_GL_SetSwapInterval(1) < 0 && uv.Platform != UltravioletPlatform.iOS)
{
throw new SDL2Exception();
}
if (gl.Initialized)
{
gl.Uninitialize();
}
gl.Initialize(new OpenGLInitializer());
if (!gl.IsVersionAtLeast(versionRequested))
{
throw new InvalidOperationException(OpenGLStrings.DoesNotMeetMinimumVersionRequirement.Format(gl.MajorVersion, gl.MinorVersion, versionRequested.Major, versionRequested.Minor));
}
OpenGLState.ResetCache();
if (!VerifyCapabilities())
{
throw new NotSupportedException(OpenGLStrings.UnsupportedGraphicsDevice);
}
if (configuration.Debug && configuration.DebugCallback != null)
{
InitializeDebugOutput(configuration);
}
this.capabilities = new OpenGLGraphicsCapabilities(configuration);
if (capabilities.SrgbEncodingEnabled && gl.IsFramebufferSrgbAvailable)
{
gl.Enable(gl.GL_FRAMEBUFFER_SRGB);
gl.ThrowIfError();
}
this.maxTextureStages = gl.GetInteger(gl.GL_MAX_TEXTURE_IMAGE_UNITS);
this.textures = new Texture[maxTextureStages];
this.samplerStates = new SamplerState[maxTextureStages];
this.samplerObjects = capabilities.SupportsIndependentSamplerState ? new OpenGLSamplerObject[maxTextureStages] : null;
this.backBufferRenderTargetUsage = configuration.BackBufferRenderTargetUsage;
if (samplerObjects != null)
{
for (int i = 0; i < samplerObjects.Length; i++)
{
samplerObjects[i] = new OpenGLSamplerObject(Ultraviolet);
samplerObjects[i].Bind((uint)i);
}
}
OpenGLState.VerifyCache();
}
/// <summary>
/// Initializes a new instance of the OpenGLUltravioletGraphics class.
/// </summary>
/// <param name="uv">The Ultraviolet context.</param>
/// <param name="configuration">The Ultraviolet Framework configuration settings for the current context.</param>
/// <param name="versionRequested">The OpenGL context version which is requested by the application.</param>
/// <param name="versionRequired">The OpenGL context version which is required by the Ultraviolet Framework.</param>
public unsafe OpenGLUltravioletGraphics(OpenGLUltravioletContext uv, OpenGLUltravioletConfiguration configuration, Version versionRequested, Version versionRequired)
: base(uv)
{
var isGLES = (uv.Platform == UltravioletPlatform.Android || uv.Platform == UltravioletPlatform.iOS);
if (configuration.Debug)
{
SDL_GL_SetAttribute(SDL_GL_CONTEXT_FLAGS, (int)SDL_GL_CONTEXT_DEBUG_FLAG);
}
var masterptr = ((SDL2UltravioletWindowInfo)uv.GetPlatform().Windows).GetMasterPointer();
var versionArray = isGLES ? KnownOpenGLESVersions : KnownOpenGLVersions;
var versionMin = versionRequested ?? versionRequired;
var versionCurrent = versionRequested ?? versionArray[0];
var versionCurrentIndex = Array.IndexOf(versionArray, versionCurrent);
do
{
if (versionCurrent < versionMin)
{
throw new InvalidOperationException(OpenGLStrings.DoesNotMeetMinimumVersionRequirement.Format(versionMin.Major, versionMin.Minor));
}
if (SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, versionCurrent.Major) < 0)
{
throw new SDL2Exception();
}
if (SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, versionCurrent.Minor) < 0)
{
throw new SDL2Exception();
}
versionCurrent = versionArray[++versionCurrentIndex];
}while ((this.context = SDL_GL_CreateContext(masterptr)) == IntPtr.Zero);
if (SDL_GL_SetSwapInterval(1) < 0 && uv.Platform != UltravioletPlatform.iOS)
{
throw new SDL2Exception();
}
if (gl.Initialized)
{
gl.Uninitialize();
}
gl.Initialize(new OpenGLInitializer());
if (!gl.IsVersionAtLeast(versionRequested ?? versionRequired))
{
throw new InvalidOperationException(OpenGLStrings.DoesNotMeetMinimumVersionRequirement.Format(gl.MajorVersion, gl.MinorVersion, versionRequested.Major, versionRequested.Minor));
}
OpenGLState.ResetCache();
if (!VerifyCapabilities())
{
throw new NotSupportedException(OpenGLStrings.UnsupportedGraphicsDevice);
}
if (configuration.Debug && configuration.DebugCallback != null)
{
InitializeDebugOutput(configuration);
}
this.Capabilities = new OpenGLGraphicsCapabilities(configuration);
if (Capabilities.SrgbEncodingEnabled && gl.IsFramebufferSrgbAvailable)
{
gl.Enable(gl.GL_FRAMEBUFFER_SRGB);
gl.ThrowIfError();
}
this.maxTextureStages = gl.GetInteger(gl.GL_MAX_TEXTURE_IMAGE_UNITS);
this.textures = new Texture[maxTextureStages];
this.samplerStates = new SamplerState[maxTextureStages];
this.samplerObjects = Capabilities.SupportsIndependentSamplerState ? new OpenGLSamplerObject[maxTextureStages] : null;
this.backBufferRenderTargetUsage = configuration.BackBufferRenderTargetUsage;
if (samplerObjects != null)
{
for (int i = 0; i < samplerObjects.Length; i++)
{
samplerObjects[i] = new OpenGLSamplerObject(Ultraviolet);
samplerObjects[i].Bind((uint)i);
}
}
OpenGLState.VerifyCache();
}