emscripten-core/emscripten

"null function or function signature mismatch" for `glClearDepth`

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#18,689 建立於 2023年2月8日

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Desktop OpenGL emulationhelp wanted

描述

I believe this issue is the same as Issue 14801 but for glClearDepth; that function is null. Other core functions (such as glClear) load just fine (the loader is GLAD), and the program works correctly under desktop.

Note that glClearDepth takes a double and has been available since OpenGL (not WebGL) 2.0, while glClearDepthf (which I found poking around the Emscripten source) takes a float and is available since OpenGL 4.1 (see docs for both). Note that glClearDepthf is null as well. The corresponding WebGL call is .clearDepth.

Version (emcc -v)

emcc (Emscripten gcc/clang-like replacement + linker emulating GNU ld) 3.1.30 (cfe2bdfe2692457cb5f5770672f6e5ccb3ffc2f2)
clang version 16.0.0 (https://github.com/llvm/llvm-project 800f0f1546b2352ba42a4777149afb13cb874fcd)

貢獻者指南

技術棧
cppwasm
領域
tooling
議題類型
bug
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
3
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
half day
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
fresh
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
mostly clear
前置要求
C++EmscriptenOpenGL/WebGL
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
35
研究方向
Investigate how other GL functions like glClear are implemented in Emscripten (e.g., via WebGL bindings). The issue reports that glClearDepth and glClearDepthf are null. The corresponding WebGL method is clearDepth. Look at the similar issue #14801 for guidance. Locate the GL function definitions in the Emscripten source (likely HTML5/GL related files) and add the missing binding for glClearDepth, mapping it to WebGL's clearDepth with proper type handling (double for glClearDepth, float for glClearDepthf). Ensure that the new function is properly exposed and tested.
"null function or function signature mismatch" for `glClearDepth` · emscripten-core/emscripten#18689 | Good First Issue