/// <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();
        }
Beispiel #3
0
        /// <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>
        public OpenGLUltravioletGraphics(OpenGLUltravioletContext uv, UltravioletConfiguration configuration)
            : base(uv)
        {
            if (configuration.Debug)
            {
                SDL.GL_SetAttribute(SDL_GLattr.CONTEXT_FLAGS, (int)SDL_GLcontextFlag.DEBUG);
            }

            var masterptr = ((OpenGLUltravioletWindowInfo)uv.GetPlatform().Windows).GetMasterPointer();

            if ((this.context = SDL.GL_CreateContext(masterptr)) == IntPtr.Zero)
            {
                if (configuration.Debug)
                {
                    SDL.GL_SetAttribute(SDL_GLattr.CONTEXT_FLAGS, 0);

                    if ((this.context = SDL.GL_CreateContext(masterptr)) == IntPtr.Zero)
                    {
                        throw new SDL2Exception();
                    }
                }
                else
                {
                    throw new SDL2Exception();
                }
            }

            if (SDL.GL_SetSwapInterval(1) < 0)
            {
                throw new SDL2Exception();
            }

            if (gl.Initialized)
            {
                gl.Uninitialize();
            }
            gl.Initialize(new OpenGLInitializer());

            OpenGLState.ResetCache();

            if (!VerifyCapabilities())
            {
                throw new NotSupportedException(OpenGLStrings.UnsupportedGraphicsDevice);
            }

            if (configuration.Debug && configuration.DebugCallback != null)
            {
                InitializeDebugOutput(configuration);
            }

            this.capabilities = new OpenGLGraphicsCapabilities();

            this.maxTextureStages            = gl.GetInteger(gl.GL_MAX_TEXTURE_IMAGE_UNITS);
            this.textures                    = new Texture2D[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();

            ResetDeviceStates();
        }