• Added issues 101 through 105. Specification changes made from these issues are to make
array parameters sized, and add some limitations in constructors. See sections 4.2, 5.4.2,
6.1, 6.1.1.
• Added interactions with ATI_draw_buffers and ARB_color_clamp_control, particularly,
the output variable gl_FragData[n].
• 3.3 Added #version and #extension to declare version and extensions.
• 7.5 Added built-in state for the inverses and transposes of matrices.
• 8 Added built-in functions refract, exp, and log.
• Added the following clarifications and corrections:
• 2.1 Remove "Clamping of colors" from the list of what the vertex processor does.
This was just out of date.
• 2.1 Change "Perspective projection" to more clearly call out projective transform and
perspective division, which belong in different lists.
• 3.3 Reserved pre-processor macros that start “GL_”.
• 3.6 Added reserved words packed, this, interface, sampler2DRectShadow. Also
clarified that the listed keywords and reserved words are the only ones.
• 4.1.5 Remove "Integer vectors can be used to get multiple integers back from a
texture read." This was just out of date.
• 4.3.5 Clarified that structs can be constants, and what const must be initialized with.
•5.8Clarifywhat*=, +=,etc.reallymean.andthat?: is not an l-value.
• 5.9 Clarify that operating between a scalar and a vector is allowed for integers as for
floats, and that the list is to list all operators and expressions.
• 6.1 Correct the examples of dot product prototypes. They were not correct WRT to
the list of prototypes, which themselves have been correct for some time.
• 6.1 Add the clarification "If a built-in function is redeclared in a shader (i.e. a
prototype is visible) before a call to it, then the linker will only attempt to resolve that
call within the set shaders that are linked with it."
• 7.2 Remove the out of date text "an implementation will provide invariant results
within shaders computing depth with the same source-level expression, but invariance
is not provided between shaders and fixed functionality."

• 7.4 Correct the list of built-in constant names: removed suffixes and brought values
up to date.
• 8.2 State the domains for the exponential functions.
•8.3Changestep() to compare x < edge instead of x <= edge.
• 8.7 Clarify the discussion about when shadowing lookups are undefined.
• 8.9 Further specify the range and frequency constraints of noise.
• Grammar: MOD_ASSIGN change to reserved (to match the specification text).
• Grammar: Change to require array sizes in function parameters.
• Several typos fixed.