GL_ARB_texture_float http://www.opengl.org/registry/specs/ARB/texture_float.txt GL_ARB_texture_float GL_RGBA32F_ARB 0x8814 GL_RGB32F_ARB 0x8815 GL_ALPHA32F_ARB 0x8816 GL_INTENSITY32F_ARB 0x8817 GL_LUMINANCE32F_ARB 0x8818 GL_LUMINANCE_ALPHA32F_ARB 0x8819 GL_RGBA16F_ARB 0x881A GL_RGB16F_ARB 0x881B GL_ALPHA16F_ARB 0x881C GL_INTENSITY16F_ARB 0x881D GL_LUMINANCE16F_ARB 0x881E GL_LUMINANCE_ALPHA16F_ARB 0x881F GL_TEXTURE_RED_TYPE_ARB 0x8C10 GL_TEXTURE_GREEN_TYPE_ARB 0x8C11 GL_TEXTURE_BLUE_TYPE_ARB 0x8C12 GL_TEXTURE_ALPHA_TYPE_ARB 0x8C13 GL_TEXTURE_LUMINANCE_TYPE_ARB 0x8C14 GL_TEXTURE_INTENSITY_TYPE_ARB 0x8C15 GL_TEXTURE_DEPTH_TYPE_ARB 0x8C16 GL_UNSIGNED_NORMALIZED_ARB 0x8C17