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LibWeb: Implement WEBGL_debug_renderer_info extension

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This extension lets pages query the underlying GPU vendor and renderer
strings via UNMASKED_VENDOR_WEBGL / UNMASKED_RENDERER_WEBGL. Some sites
(e.g. yandex.com/maps) use it to decide whether to render vector tiles
with WebGL or fall back to raster tiles.
This commit is contained in:
Aliaksandr Kalenik
2026-04-22 20:39:31 +02:00
committed by Alexander Kalenik
parent eb9432fcb8
commit 3c7b3a0fe2
Notes: github-actions[bot] 2026-04-22 20:40:35 +00:00 
Author: https://github.com/kalenikaliaksandr
Commit: https://github.com/LadybirdBrowser/ladybird/commit/3c7b3a0fe2e
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/9043
7 changed files with 109 additions and 1 deletions
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3
Libraries/LibWeb/WebGL/WebGLRenderingContextBase.cpp
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@@ -34,6 +34,7 @@ extern "C" {
#include <LibWeb/WebGL/Extensions/OESVertexArrayObject.h>
#include <LibWeb/WebGL/Extensions/WebGLCompressedTextureS3tc.h>
#include <LibWeb/WebGL/Extensions/WebGLCompressedTextureS3tcSrgb.h>
#include <LibWeb/WebGL/Extensions/WebGLDebugRendererInfo.h>
#include <LibWeb/WebGL/Extensions/WebGLDrawBuffers.h>
#include <LibWeb/WebGL/OpenGLContext.h>
#include <LibWeb/WebGL/WebGLRenderingContextBase.h>
@@ -124,7 +125,7 @@ static HashMap<String, Extension, AK::ASCIICaseInsensitiveStringTraits> s_availa
{ "OES_texture_half_float_linear"_string, { { "GL_OES_texture_half_float_linear"sv }, nullptr, OpenGLContext::WebGLVersion::WebGL1 } },
{ "OES_vertex_array_object"_string, { { "GL_OES_vertex_array_object"sv }, Extensions::OESVertexArrayObject::create, OpenGLContext::WebGLVersion::WebGL1 } },
{ "WEBGL_compressed_texture_s3tc"_string, { { "GL_EXT_texture_compression_dxt1"sv, "GL_ANGLE_texture_compression_dxt3"sv, "GL_ANGLE_texture_compression_dxt5"sv }, Extensions::WebGLCompressedTextureS3tc::create } },
{ "WEBGL_debug_renderer_info"_string, { {}, nullptr } },
{ "WEBGL_debug_renderer_info"_string, { {}, Extensions::WebGLDebugRendererInfo::create } },
{ "WEBGL_debug_shaders"_string, { {}, nullptr } },
{ "WEBGL_depth_texture"_string, { { "GL_ANGLE_depth_texture"sv }, nullptr, OpenGLContext::WebGLVersion::WebGL1 } },
{ "WEBGL_draw_buffers"_string, { { "GL_EXT_draw_buffers"sv }, Extensions::WebGLDrawBuffers::create, OpenGLContext::WebGLVersion::WebGL1 } },