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LibWeb/WebGL: Map WebGL extensions to the required extensions
This is used to put together the list of supported WebGL extensions based on the available extensions, per-extension required extensions and WebGL version.
This commit is contained in:
Luke Wilde
Andreas Kling
parent
d915b574ab
commit
915c36c366
Notes:
github-actions[bot]
2025-01-21 20:37:14 +00:00
Author: https://github.com/Lubrsi Commit: https://github.com/LadybirdBrowser/ladybird/commit/915c36c366c Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/3239 Reviewed-by: https://github.com/awesomekling Reviewed-by: https://github.com/kalenikaliaksandr
2 changed files with 89 additions and 62 deletions
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@ -4,6 +4,7 @@
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/HashMap.h>
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#include <AK/OwnPtr.h>
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#include <AK/String.h>
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#include <LibGfx/PaintingSurface.h>
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@ -231,82 +232,107 @@ u32 OpenGLContext::default_framebuffer() const
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#endif
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}
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Vector<StringView> s_available_webgl_extensions {
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struct Extension {
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String webgl_extension_name;
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Vector<StringView> required_angle_extensions;
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Optional<u32> only_for_webgl_version { OptionalNone {} };
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};
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Vector<Extension> s_available_webgl_extensions {
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// Khronos ratified WebGL Extensions
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"ANGLE_instanced_arrays"sv,
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"EXT_blend_minmax"sv,
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"EXT_frag_depth"sv,
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"EXT_shader_texture_lod"sv,
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"EXT_texture_filter_anisotropic"sv,
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"OES_element_index_uint"sv,
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"OES_standard_derivatives"sv,
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"OES_texture_float"sv,
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"OES_texture_float_linear"sv,
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"OES_texture_half_float"sv,
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"OES_texture_half_float_linear"sv,
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"OES_vertex_array_object"sv,
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"WEBGL_compressed_texture_s3tc"sv,
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"WEBGL_debug_renderer_info"sv,
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"WEBGL_debug_shaders"sv,
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"WEBGL_depth_texture"sv,
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"WEBGL_draw_buffers"sv,
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"WEBGL_lose_context"sv,
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{ "ANGLE_instanced_arrays"_string, { "GL_ANGLE_instanced_arrays"sv }, 1 },
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{ "EXT_blend_minmax"_string, { "GL_EXT_blend_minmax"sv }, 1 },
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{ "EXT_frag_depth"_string, { "GL_EXT_frag_depth"sv }, 1 },
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{ "EXT_shader_texture_lod"_string, { "GL_EXT_shader_texture_lod"sv }, 1 },
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{ "EXT_texture_filter_anisotropic"_string, { "GL_EXT_texture_filter_anisotropic"sv } },
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{ "OES_element_index_uint"_string, { "GL_OES_element_index_uint"sv }, 1 },
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{ "OES_standard_derivatives"_string, { "GL_OES_standard_derivatives"sv }, 1 },
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{ "OES_texture_float"_string, { "GL_OES_texture_float"sv }, 1 },
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{ "OES_texture_float_linear"_string, { "GL_OES_texture_float_linear"sv } },
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{ "OES_texture_half_float"_string, { "GL_OES_texture_half_float"sv }, 1 },
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{ "OES_texture_half_float_linear"_string, { "GL_OES_texture_half_float_linear"sv }, 1 },
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{ "OES_vertex_array_object"_string, { "GL_OES_vertex_array_object"sv }, 1 },
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{ "WEBGL_compressed_texture_s3tc"_string, { "GL_EXT_texture_compression_dxt1"sv, "GL_ANGLE_texture_compression_dxt3"sv, "GL_ANGLE_texture_compression_dxt5"sv } },
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{ "WEBGL_debug_renderer_info"_string, {} },
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{ "WEBGL_debug_shaders"_string, {} },
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{ "WEBGL_depth_texture"_string, { "GL_ANGLE_depth_texture"sv }, 1 },
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{ "WEBGL_draw_buffers"_string, { "GL_EXT_draw_buffers"sv }, 1 },
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{ "WEBGL_lose_context"_string, {} },
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// Community approved WebGL Extensions
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"EXT_clip_control"sv,
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"EXT_color_buffer_float"sv,
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"EXT_color_buffer_half_float"sv,
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"EXT_conservative_depth"sv,
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"EXT_depth_clamp"sv,
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"EXT_disjoint_timer_query"sv,
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"EXT_disjoint_timer_query_webgl2"sv,
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"EXT_float_blend"sv,
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"EXT_polygon_offset_clamp"sv,
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"EXT_render_snorm"sv,
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"EXT_sRGB"sv,
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"EXT_texture_compression_bptc"sv,
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"EXT_texture_compression_rgtc"sv,
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"EXT_texture_mirror_clamp_to_edge"sv,
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"EXT_texture_norm16"sv,
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"KHR_parallel_shader_compile"sv,
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"NV_shader_noperspective_interpolation"sv,
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"OES_draw_buffers_indexed"sv,
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"OES_fbo_render_mipmap"sv,
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"OES_sample_variables"sv,
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"OES_shader_multisample_interpolation"sv,
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"OVR_multiview2"sv,
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"WEBGL_blend_func_extended"sv,
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"WEBGL_clip_cull_distance"sv,
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"WEBGL_color_buffer_float"sv,
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"WEBGL_compressed_texture_astc"sv,
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"WEBGL_compressed_texture_etc"sv,
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"WEBGL_compressed_texture_etc1"sv,
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"WEBGL_compressed_texture_pvrtc"sv,
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"WEBGL_compressed_texture_s3tc_srgb"sv,
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"WEBGL_multi_draw"sv,
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"WEBGL_polygon_mode"sv,
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"WEBGL_provoking_vertex"sv,
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"WEBGL_render_shared_exponent"sv,
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"WEBGL_stencil_texturing"sv,
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{ "EXT_clip_control"_string, { "GL_EXT_clip_control"sv } },
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{ "EXT_color_buffer_float"_string, { "GL_EXT_color_buffer_float"sv }, 2 },
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{ "EXT_color_buffer_half_float"_string, { "GL_EXT_color_buffer_half_float"sv } },
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{ "EXT_conservative_depth"_string, { "GL_EXT_conservative_depth"sv }, 2 },
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{ "EXT_depth_clamp"_string, { "GL_EXT_depth_clamp"sv } },
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{ "EXT_disjoint_timer_query"_string, { "GL_EXT_disjoint_timer_query"sv }, 1 },
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{ "EXT_disjoint_timer_query_webgl2"_string, { "GL_EXT_disjoint_timer_query"sv }, 2 },
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{ "EXT_float_blend"_string, { "GL_EXT_float_blend"sv } },
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{ "EXT_polygon_offset_clamp"_string, { "GL_EXT_polygon_offset_clamp"sv } },
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{ "EXT_render_snorm"_string, { "GL_EXT_render_snorm"sv }, 2 },
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{ "EXT_sRGB"_string, { "GL_EXT_sRGB"sv }, 1 },
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{ "EXT_texture_compression_bptc"_string, { "GL_EXT_texture_compression_bptc"sv } },
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{ "EXT_texture_compression_rgtc"_string, { "GL_EXT_texture_compression_rgtc"sv } },
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{ "EXT_texture_mirror_clamp_to_edge"_string, { "GL_EXT_texture_mirror_clamp_to_edge"sv } },
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{ "EXT_texture_norm16"_string, { "GL_EXT_texture_norm16"sv }, 2 },
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{ "KHR_parallel_shader_compile"_string, { "GL_KHR_parallel_shader_compile"sv } },
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{ "NV_shader_noperspective_interpolation"_string, { "GL_NV_shader_noperspective_interpolation"sv }, 2 },
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{ "OES_draw_buffers_indexed"_string, { "GL_OES_draw_buffers_indexed"sv } },
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{ "OES_fbo_render_mipmap"_string, { "GL_OES_fbo_render_mipmap"sv }, 1 },
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{ "OES_sample_variables"_string, { "GL_OES_sample_variables"sv }, 2 },
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{ "OES_shader_multisample_interpolation"_string, { "GL_OES_shader_multisample_interpolation"sv }, 2 },
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{ "OVR_multiview2"_string, { "GL_OVR_multiview2"sv }, 2 },
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{ "WEBGL_blend_func_extended"_string, { "GL_EXT_blend_func_extended"sv } },
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{ "WEBGL_clip_cull_distance"_string, { "GL_EXT_clip_cull_distance"sv }, 2 },
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{ "WEBGL_color_buffer_float"_string, { "EXT_color_buffer_half_float"sv, "OES_texture_float"sv }, 1 },
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{ "WEBGL_compressed_texture_astc"_string, { "KHR_texture_compression_astc_hdr"sv, "KHR_texture_compression_astc_ldr"sv } },
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{ "WEBGL_compressed_texture_etc"_string, { "GL_ANGLE_compressed_texture_etc"sv } },
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{ "WEBGL_compressed_texture_etc1"_string, { "GL_OES_compressed_ETC1_RGB8_texture"sv } },
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{ "WEBGL_compressed_texture_pvrtc"_string, { "GL_IMG_texture_compression_pvrtc"sv } },
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{ "WEBGL_compressed_texture_s3tc_srgb"_string, { "GL_EXT_texture_compression_s3tc_srgb"sv } },
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{ "WEBGL_multi_draw"_string, { "GL_ANGLE_multi_draw"sv } },
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{ "WEBGL_polygon_mode"_string, { "GL_ANGLE_polygon_mode"sv } },
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{ "WEBGL_provoking_vertex"_string, { "GL_ANGLE_provoking_vertex"sv }, 2 },
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{ "WEBGL_render_shared_exponent"_string, { "GL_QCOM_render_shared_exponent"sv }, 2 },
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{ "WEBGL_stencil_texturing"_string, { "GL_ANGLE_stencil_texturing"sv }, 2 },
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};
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Vector<String> OpenGLContext::get_supported_extensions()
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{
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#ifdef AK_OS_MACOS
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if (m_requestable_extensions.has_value())
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return m_requestable_extensions.value();
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make_current();
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auto const* extensions_string = reinterpret_cast<char const*>(glGetString(GL_REQUESTABLE_EXTENSIONS_ANGLE));
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StringView extensions_view(extensions_string, strlen(extensions_string));
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auto const* requestable_extensions_string = reinterpret_cast<char const*>(glGetString(GL_REQUESTABLE_EXTENSIONS_ANGLE));
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StringView requestable_extensions_view(requestable_extensions_string, strlen(requestable_extensions_string));
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auto requestable_extensions = requestable_extensions_view.split_view(' ');
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Vector<String> extensions;
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for (auto const& extension : extensions_view.split_view(' ')) {
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auto extension_name_without_gl_prefix = extension.substring_view(3);
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// FIXME: WebGL 1 and WebGL 2 have different sets of available extensions, but for now we simply
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// filter out everything that is not listed in https://registry.khronos.org/webgl/extensions/
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if (s_available_webgl_extensions.contains_slow(extension_name_without_gl_prefix))
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extensions.append(MUST(String::from_utf8(extension_name_without_gl_prefix)));
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for (auto const& available_extension : s_available_webgl_extensions) {
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// FIXME: Check WebGL version.
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bool supported = true;
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for (auto const& required_extension : available_extension.required_angle_extensions) {
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auto maybe_required_extension = requestable_extensions.find_if([&](StringView requestable_extension) {
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return required_extension == requestable_extension;
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});
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if (maybe_required_extension == requestable_extensions.end()) {
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supported = false;
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break;
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}
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}
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if (supported)
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extensions.append(available_extension.webgl_extension_name);
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}
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// We must cache this, because once extensions have been requested, they're no longer requestable extensions and would
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// not appear in this list. However, we must always report every supported extension, regardless of what has already
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// been requested.
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m_requestable_extensions = extensions;
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return extensions;
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#else
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return {};
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@ -41,6 +41,7 @@ private:
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Gfx::IntSize m_size;
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RefPtr<Gfx::PaintingSurface> m_painting_surface;
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NonnullOwnPtr<Impl> m_impl;
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Optional<Vector<String>> m_requestable_extensions;
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};
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}
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