public FrameBuffer(Size size, ITextureInternal texture, Color clearColor)
{
this.size = size;
this.clearColor = clearColor;
if (!Exts.IsPowerOf2(size.Width) || !Exts.IsPowerOf2(size.Height))
{
throw new InvalidDataException("Frame buffer size ({0}x{1}) must be a power of two".F(size.Width, size.Height));
}
OpenGL.glGenFramebuffers(1, out framebuffer);
OpenGL.CheckGLError();
OpenGL.glBindFramebuffer(OpenGL.GL_FRAMEBUFFER, framebuffer);
OpenGL.CheckGLError();
// Color
this.texture = texture;
texture.SetEmpty(size.Width, size.Height);
OpenGL.glFramebufferTexture2D(OpenGL.GL_FRAMEBUFFER, OpenGL.GL_COLOR_ATTACHMENT0, OpenGL.GL_TEXTURE_2D, texture.ID, 0);
OpenGL.CheckGLError();
// Depth
OpenGL.glGenRenderbuffers(1, out depth);
OpenGL.CheckGLError();
OpenGL.glBindRenderbuffer(OpenGL.GL_RENDERBUFFER, depth);
OpenGL.CheckGLError();
var glDepth = OpenGL.Profile == GLProfile.Embedded ? OpenGL.GL_DEPTH_COMPONENT16 : OpenGL.GL_DEPTH_COMPONENT;
OpenGL.glRenderbufferStorage(OpenGL.GL_RENDERBUFFER, glDepth, size.Width, size.Height);
OpenGL.CheckGLError();
OpenGL.glFramebufferRenderbuffer(OpenGL.GL_FRAMEBUFFER, OpenGL.GL_DEPTH_ATTACHMENT, OpenGL.GL_RENDERBUFFER, depth);
OpenGL.CheckGLError();
// Test for completeness
var status = OpenGL.glCheckFramebufferStatus(OpenGL.GL_FRAMEBUFFER);
if (status != OpenGL.GL_FRAMEBUFFER_COMPLETE)
{
var error = "Error creating framebuffer: {0}\n{1}".F(status, new StackTrace());
OpenGL.WriteGraphicsLog(error);
throw new InvalidOperationException("OpenGL Error: See graphics.log for details.");
}
// Restore default buffer
OpenGL.glBindFramebuffer(OpenGL.GL_FRAMEBUFFER, 0);
OpenGL.CheckGLError();
}
public FrameBuffer(Size size)
{
this.size = size;
if (!Exts.IsPowerOf2(size.Width) || !Exts.IsPowerOf2(size.Height))
{
throw new InvalidDataException("Frame buffer size ({0}x{1}) must be a power of two".F(size.Width, size.Height));
}
OpenGL.glGenFramebuffers(1, out framebuffer);
OpenGL.CheckGLError();
OpenGL.glBindFramebuffer(OpenGL.FRAMEBUFFER_EXT, framebuffer);
OpenGL.CheckGLError();
// Color
texture = new Texture();
texture.SetEmpty(size.Width, size.Height);
OpenGL.glFramebufferTexture2D(OpenGL.FRAMEBUFFER_EXT, OpenGL.COLOR_ATTACHMENT0_EXT, OpenGL.GL_TEXTURE_2D, texture.ID, 0);
OpenGL.CheckGLError();
// Depth
OpenGL.glGenRenderbuffers(1, out depth);
OpenGL.CheckGLError();
OpenGL.glBindRenderbuffer(OpenGL.RENDERBUFFER_EXT, depth);
OpenGL.CheckGLError();
OpenGL.glRenderbufferStorage(OpenGL.RENDERBUFFER_EXT, OpenGL.GL_DEPTH_COMPONENT, size.Width, size.Height);
OpenGL.CheckGLError();
OpenGL.glFramebufferRenderbuffer(OpenGL.FRAMEBUFFER_EXT, OpenGL.DEPTH_ATTACHMENT_EXT, OpenGL.RENDERBUFFER_EXT, depth);
OpenGL.CheckGLError();
// Test for completeness
var status = OpenGL.glCheckFramebufferStatus(OpenGL.FRAMEBUFFER_EXT);
if (status != OpenGL.FRAMEBUFFER_COMPLETE_EXT)
{
var error = "Error creating framebuffer: {0}\n{1}".F(status, new StackTrace());
OpenGL.WriteGraphicsLog(error);
throw new InvalidOperationException("OpenGL Error: See graphics.log for details.");
}
// Restore default buffer
OpenGL.glBindFramebuffer(OpenGL.FRAMEBUFFER_EXT, 0);
OpenGL.CheckGLError();
}
public static void Initialize()
{
// glGetError and glGetString are used in our error handlers
// so we want these to be available early.
try
{
glGetError = Bind<GetError>("glGetError");
glGetStringInternal = Bind<GetString>("glGetString");
}
catch (Exception)
{
throw new InvalidProgramException("Failed to initialize low-level OpenGL bindings. GPU information is not available");
}
DetectGLFeatures();
if (!Features.HasFlag(GLFeatures.GL2OrGreater) || !Features.HasFlag(GLFeatures.FramebufferExt))
{
WriteGraphicsLog("Unsupported OpenGL version: " + glGetString(OpenGL.GL_VERSION));
throw new InvalidProgramException("OpenGL Version Error: See graphics.log for details.");
}
else
Console.WriteLine("OpenGL version: " + glGetString(OpenGL.GL_VERSION));
try
{
glFlush = Bind<Flush>("glFlush");
glViewport = Bind<Viewport>("glViewport");
glClear = Bind<Clear>("glClear");
glClearColor = Bind<ClearColor>("glClearColor");
glGetIntegerv = Bind<GetIntegerv>("glGetIntegerv");
glFinish = Bind<Finish>("glFinish");
glCreateProgram = Bind<CreateProgram>("glCreateProgram");
glUseProgram = Bind<UseProgram>("glUseProgram");
glGetProgramiv = Bind<GetProgramiv>("glGetProgramiv");
glCreateShader = Bind<CreateShader>("glCreateShader");
glShaderSource = Bind<ShaderSource>("glShaderSource");
glCompileShader = Bind<CompileShader>("glCompileShader");
glGetShaderiv = Bind<GetShaderiv>("glGetShaderiv");
glAttachShader = Bind<AttachShader>("glAttachShader");
glGetShaderInfoLog = Bind<GetShaderInfoLog>("glGetShaderInfoLog");
glLinkProgram = Bind<LinkProgram>("glLinkProgram");
glGetProgramInfoLog = Bind<GetProgramInfoLog>("glGetProgramInfoLog");
glGetUniformLocation = Bind<GetUniformLocation>("glGetUniformLocation");
glGetActiveUniform = Bind<GetActiveUniform>("glGetActiveUniform");
glUniform1i = Bind<Uniform1i>("glUniform1i");
glUniform1f = Bind<Uniform1f>("glUniform1f");
glUniform2f = Bind<Uniform2f>("glUniform2f");
glUniform1fv = Bind<Uniform1fv>("glUniform1fv");
glUniform2fv = Bind<Uniform2fv>("glUniform2fv");
glUniform3fv = Bind<Uniform3fv>("glUniform3fv");
glUniform4fv = Bind<Uniform4fv>("glUniform4fv");
glUniformMatrix4fv = Bind<UniformMatrix4fv>("glUniformMatrix4fv");
glGenBuffers = Bind<GenBuffers>("glGenBuffers");
glBindBuffer = Bind<BindBuffer>("glBindBuffer");
glBufferData = Bind<BufferData>("glBufferData");
glBufferSubData = Bind<BufferSubData>("glBufferSubData");
glDeleteBuffers = Bind<DeleteBuffers>("glDeleteBuffers");
glBindAttribLocation = Bind<BindAttribLocation>("glBindAttribLocation");
glVertexAttribPointer = Bind<VertexAttribPointer>("glVertexAttribPointer");
glEnableVertexAttribArray = Bind<EnableVertexAttribArray>("glEnableVertexAttribArray");
glDisableVertexAttribArray = Bind<DisableVertexAttribArray>("glDisableVertexAttribArray");
glDrawArrays = Bind<DrawArrays>("glDrawArrays");
glEnable = Bind<Enable>("glEnable");
glDisable = Bind<Disable>("glDisable");
glBlendEquation = Bind<BlendEquation>("glBlendEquation");
glBlendFunc = Bind<BlendFunc>("glBlendFunc");
glScissor = Bind<Scissor>("glScissor");
glPushClientAttrib = Bind<PushClientAttrib>("glPushClientAttrib");
glPopClientAttrib = Bind<PopClientAttrib>("glPopClientAttrib");
glPixelStoref = Bind<PixelStoref>("glPixelStoref");
glReadPixels = Bind<ReadPixels>("glReadPixels");
glGenTextures = Bind<GenTextures>("glGenTextures");
glDeleteTextures = Bind<DeleteTextures>("glDeleteTextures");
glBindTexture = Bind<BindTexture>("glBindTexture");
glActiveTexture = Bind<ActiveTexture>("glActiveTexture");
glTexImage2D = Bind<TexImage2D>("glTexImage2D");
glGetTexImage = Bind<GetTexImage>("glGetTexImage");
glTexParameteri = Bind<TexParameteri>("glTexParameteri");
glTexParameterf = Bind<TexParameterf>("glTexParameterf");
glGenFramebuffers = Bind<GenFramebuffers>("glGenFramebuffersEXT");
glBindFramebuffer = Bind<BindFramebuffer>("glBindFramebufferEXT");
glFramebufferTexture2D = Bind<FramebufferTexture2D>("glFramebufferTexture2DEXT");
glDeleteFramebuffers = Bind<DeleteFramebuffers>("glDeleteFramebuffersEXT");
glGenRenderbuffers = Bind<GenRenderbuffers>("glGenRenderbuffersEXT");
glBindRenderbuffer = Bind<BindRenderbuffer>("glBindRenderbufferEXT");
glRenderbufferStorage = Bind<RenderbufferStorage>("glRenderbufferStorageEXT");
glDeleteRenderbuffers = Bind<DeleteRenderbuffers>("glDeleteRenderbuffersEXT");
glFramebufferRenderbuffer = Bind<FramebufferRenderbuffer>("glFramebufferRenderbufferEXT");
glCheckFramebufferStatus = Bind<CheckFramebufferStatus>("glCheckFramebufferStatusEXT");
}
catch (Exception e)
{
OpenGL.WriteGraphicsLog("Failed to initialize OpenGL bindings.\nInner exception was: {0}".F(e));
throw new InvalidProgramException("Failed to initialize OpenGL. See graphics.log for details.");
}
}
