Added missing OpenGL 1.5 buffer functions to wrapper

[LukaTD]

The last of OpenGL 1.5 wrapper functions.

[Copilot]

Pull Request Overview

This PR adds wrapper functions for OpenGL 1.5 buffer query and mapping operations. The changes introduce type-safe Zig wrappers around the low-level OpenGL buffer management APIs.

• Adds new enum types (Access, BufferParameter, BufferPointerParameter) for buffer-related parameters
• Implements wrapper functions for buffer queries (isBuffer, getBufferParameteriv, getBufferPointerv, getBufferSubData)
• Implements buffer mapping functions (mapBuffer, unmapBuffer)

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[Copilot]

The parameter type ?[*]u8 allows null but doesn't allow the user to specify the length of the buffer, which could lead to buffer overruns. Consider changing to data: []u8 to match the pattern used in bufferSubData at line 2684, which uses bytes: []const u8. This provides length information and improves safety.

Suggested change

	size: usize,
	data: ?[*]u8,
	) void {
	bindings.getBufferSubData(
	@intFromEnum(target),
	@as(Intptr, @bitCast(offset)),
	@as(Sizeiptr, @bitCast(size)),
	data,
	data: []u8,
	) void {
	bindings.getBufferSubData(
	@intFromEnum(target),
	@as(Intptr, @bitCast(offset)),
	@as(Sizeiptr, @bitCast(data.len)),
	data.ptr,

[Copilot]

The function accepts a slice params: []i32 but doesn't validate that it has sufficient length for the requested parameter. Different BufferParameter values require different numbers of elements (e.g., buffer_size needs 1 element). Consider documenting the expected slice length for each parameter or adding runtime validation to prevent buffer underruns.