Validate tex functions input parameters On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". PASS gl = create3DContext() is non-null. PASS tex = gl.createTexture() is non-null. PASS getError was expected value: NO_ERROR : Checking TexImage2D: a set of inputs that are valid in GL but invalid in GLES2 PASS getError was expected value: INVALID_ENUM : internalFormat: RGBA target: 0x8064 format: RGBA type: UNSIGNED_BYTE border: 0 PASS getError was expected value: INVALID_ENUM : internalFormat: 0x1903 target: TEXTURE_2D format: 0x1903 type: UNSIGNED_BYTE border: 0 PASS getError was expected value: INVALID_VALUE : internalFormat: RGBA target: TEXTURE_2D format: RGBA type: UNSIGNED_BYTE border: 1 PASS getError was expected value: INVALID_OPERATION : internalFormat: RGBA target: TEXTURE_2D format: RGB type: UNSIGNED_BYTE border: 0 PASS getError was expected value: INVALID_ENUM : internalFormat: RGBA target: TEXTURE_2D format: RGBA type: BYTE border: 0 PASS getError was expected value: NO_ERROR : internalFormat: RGBA target: TEXTURE_2D format: RGBA type: UNSIGNED_BYTE border: 0 Checking TexSubImage2D: a set of inputs that are valid in GL but invalid in GLES2 PASS getError was expected value: INVALID_ENUM : format: 0x1903 type: UNSIGNED_BYTE PASS getError was expected value: INVALID_ENUM : format: RGBA type: BYTE PASS getError was expected value: NO_ERROR : format: RGBA type: UNSIGNED_BYTE Checking TexParameter: a set of inputs that are valid in GL but invalid in GLES2 PASS getError was expected value: INVALID_ENUM : paramName: TEXTURE_WRAP_T PASS getError was expected value: INVALID_ENUM : paramName: TEXTURE_WRAP_T PASS getError was expected value: INVALID_ENUM : paramName: 0x813a PASS getError was expected value: INVALID_ENUM : paramName: 0x813a PASS getError was expected value: INVALID_ENUM : paramName: TEXTURE_WRAP_T PASS getError was expected value: INVALID_ENUM : paramName: TEXTURE_WRAP_T PASS getError was expected value: NO_ERROR : paramName: TEXTURE_WRAP_T PASS getError was expected value: NO_ERROR : paramName: TEXTURE_WRAP_T Checking GetTexParameter: a set of inputs that are valid in GL but invalid in GLES2 PASS getError was expected value: INVALID_ENUM : paramName: TEXTURE_WRAP_T PASS getError was expected value: INVALID_ENUM : paramName: 0x813a PASS getError was expected value: NO_ERROR : paramName: TEXTURE_WRAP_T Checking CopyTexImage2D: a set of inputs that are valid in GL but invalid in GLES2 PASS fbo = gl.createFramebuffer() is non-null. PASS colorBuffer = gl.createRenderbuffer() is non-null. PASS getError was expected value: NO_ERROR : PASS getError was expected value: NO_ERROR : PASS gl.checkFramebufferStatus(gl.FRAMEBUFFER) is gl.FRAMEBUFFER_COMPLETE PASS getError was expected value: INVALID_ENUM : colorBufferFormat: RGB565 internalFormat: 0x8054 target: TEXTURE_2D border: 0 PASS getError was expected value: NO_ERROR : PASS gl.checkFramebufferStatus(gl.FRAMEBUFFER) is gl.FRAMEBUFFER_COMPLETE PASS getError was expected value: INVALID_VALUE : colorBufferFormat: RGB565 internalFormat: RGBA target: TEXTURE_2D border: 1 PASS getError was expected value: NO_ERROR : PASS gl.checkFramebufferStatus(gl.FRAMEBUFFER) is gl.FRAMEBUFFER_COMPLETE PASS getError was expected value: INVALID_OPERATION : colorBufferFormat: RGB565 internalFormat: RGBA target: TEXTURE_2D border: 0 PASS getError was expected value: NO_ERROR : PASS gl.checkFramebufferStatus(gl.FRAMEBUFFER) is gl.FRAMEBUFFER_COMPLETE PASS getError was expected value: NO_ERROR : colorBufferFormat: RGB565 internalFormat: RGB target: TEXTURE_2D border: 0 Checking CopyTexSubImage2D: a set of inputs that are valid in GL but invalid in GLES2 PASS getError was expected value: NO_ERROR : PASS gl.checkFramebufferStatus(gl.FRAMEBUFFER) is gl.FRAMEBUFFER_COMPLETE PASS getError was expected value: NO_ERROR : PASS getError was expected value: NO_ERROR : colorBufferFormat: RGB5_A1 internalFormat: RGBA target: TEXTURE_2D PASS getError was expected value: NO_ERROR : PASS gl.checkFramebufferStatus(gl.FRAMEBUFFER) is gl.FRAMEBUFFER_COMPLETE PASS getError was expected value: NO_ERROR : PASS getError was expected value: INVALID_OPERATION : colorBufferFormat: RGB565 internalFormat: RGBA target: TEXTURE_2D Checking CopyTex{Sub}Image2D: copy from WebGL internal framebuffer PASS gl is non-null. PASS tex = gl.createTexture() is non-null. PASS getError was expected value: NO_ERROR : PASS getError was expected value: NO_ERROR : colorBufferFormat: RGBA internalFormat: RGBA PASS gl is non-null. PASS tex = gl.createTexture() is non-null. PASS getError was expected value: NO_ERROR : PASS getError was expected value: INVALID_OPERATION : colorBufferFormat: RGB internalFormat: RGBA PASS gl is non-null. PASS tex = gl.createTexture() is non-null. PASS getError was expected value: NO_ERROR : PASS getError was expected value: NO_ERROR : colorBufferFormat: RGBA internalFormat: RGBA PASS gl is non-null. PASS tex = gl.createTexture() is non-null. PASS getError was expected value: NO_ERROR : PASS getError was expected value: INVALID_OPERATION : colorBufferFormat: RGB internalFormat: RGBA PASS successfullyParsed is true TEST COMPLETE