GL_ARB_framebuffer_no_attachments http://www.opengl.org/registry/specs/gl/ARB/framebuffer_no_attachments.txt GL_ARB_framebuffer_no_attachments GL_FRAMEBUFFER_DEFAULT_WIDTH 0x9310 GL_FRAMEBUFFER_DEFAULT_HEIGHT 0x9311 GL_FRAMEBUFFER_DEFAULT_LAYERS 0x9312 GL_FRAMEBUFFER_DEFAULT_SAMPLES 0x9313 GL_FRAMEBUFFER_DEFAULT_FIXED_SAMPLE_LOCATIONS 0x9314 GL_MAX_FRAMEBUFFER_WIDTH 0x9315 GL_MAX_FRAMEBUFFER_HEIGHT 0x9316 GL_MAX_FRAMEBUFFER_LAYERS 0x9317 GL_MAX_FRAMEBUFFER_SAMPLES 0x9318 void glFramebufferParameteri (GLenum target, GLenum pname, GLint param) void glGetFramebufferParameteriv (GLenum target, GLenum pname, GLint* params) void glGetNamedFramebufferParameterivEXT (GLuint framebuffer, GLenum pname, GLint* params) void glNamedFramebufferParameteriEXT (GLuint framebuffer, GLenum pname, GLint param)