1GL_NV_framebuffer_multisample_coverage 2http://developer.download.nvidia.com/opengl/specs/GL_NV_framebuffer_multisample_coverage.txt 3GL_NV_framebuffer_multisample_coverage 4 5 GL_RENDERBUFFER_COVERAGE_SAMPLES_NV 0x8CAB 6 GL_RENDERBUFFER_COLOR_SAMPLES_NV 0x8E10 7 GL_MAX_MULTISAMPLE_COVERAGE_MODES_NV 0x8E11 8 GL_MULTISAMPLE_COVERAGE_MODES_NV 0x8E12 9 void glRenderbufferStorageMultisampleCoverageNV (GLenum target, GLsizei coverageSamples, GLsizei colorSamples, GLenum internalformat, GLsizei width, GLsizei height) 10