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CodeGenerators: Implement getParameter() according to the WebGL spec
Fixes https://github.com/LadybirdBrowser/ladybird/issues/2759
This commit is contained in:
Aliaksandr Kalenik
Alexander Kalenik
parent
1881a8df4b
commit
66a38f1abc
Notes:
github-actions[bot]
2024-12-04 21:22:01 +00:00
Author: https://github.com/kalenikaliaksandr
Commit: 66a38f1abc
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2769
1 changed files with 170 additions and 5 deletions
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@ -58,6 +58,175 @@ static ByteString idl_to_gl_function_name(StringView function_name)
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return gl_function_name_builder.to_byte_string();
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}
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static void generate_get_parameter(SourceGenerator& generator)
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{
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struct NameAndType {
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StringView name;
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struct {
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StringView type;
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int element_count { 0 };
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} return_type;
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};
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Vector<NameAndType> const name_to_type = {
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{ "ACTIVE_TEXTURE"sv, { "GLenum"sv } },
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{ "ALIASED_LINE_WIDTH_RANGE"sv, { "Float32Array"sv, 2 } },
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{ "ALIASED_POINT_SIZE_RANGE"sv, { "Float32Array"sv, 2 } },
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{ "ALPHA_BITS"sv, { "GLint"sv } },
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{ "ARRAY_BUFFER_BINDING"sv, { "WebGLBuffer"sv } },
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{ "BLEND"sv, { "GLboolean"sv } },
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{ "BLEND_COLOR"sv, { "Float32Array"sv, 4 } },
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{ "BLEND_DST_ALPHA"sv, { "GLenum"sv } },
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{ "BLEND_DST_RGB"sv, { "GLenum"sv } },
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{ "BLEND_EQUATION_ALPHA"sv, { "GLenum"sv } },
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{ "BLEND_EQUATION_RGB"sv, { "GLenum"sv } },
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{ "BLEND_SRC_ALPHA"sv, { "GLenum"sv } },
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{ "BLEND_SRC_RGB"sv, { "GLenum"sv } },
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{ "BLUE_BITS"sv, { "GLint"sv } },
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{ "COLOR_CLEAR_VALUE"sv, { "Float32Array"sv, 4 } },
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// FIXME: { "COLOR_WRITEMASK"sv, { "sequence<GLboolean>"sv, 4 } },
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// FIXME: { "COMPRESSED_TEXTURE_FORMATS"sv, { "Uint32Array"sv } },
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{ "CULL_FACE"sv, { "GLboolean"sv } },
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{ "CULL_FACE_MODE"sv, { "GLenum"sv } },
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{ "CURRENT_PROGRAM"sv, { "WebGLProgram"sv } },
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{ "DEPTH_BITS"sv, { "GLint"sv } },
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{ "DEPTH_CLEAR_VALUE"sv, { "GLfloat"sv } },
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{ "DEPTH_FUNC"sv, { "GLenum"sv } },
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{ "DEPTH_RANGE"sv, { "Float32Array"sv, 2 } },
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{ "DEPTH_TEST"sv, { "GLboolean"sv } },
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{ "DEPTH_WRITEMASK"sv, { "GLboolean"sv } },
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{ "DITHER"sv, { "GLboolean"sv } },
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{ "ELEMENT_ARRAY_BUFFER_BINDING"sv, { "WebGLBuffer"sv } },
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// FIXME: { "FRAMEBUFFER_BINDING"sv, { "WebGLFramebuffer"sv } },
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{ "FRONT_FACE"sv, { "GLenum"sv } },
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{ "GENERATE_MIPMAP_HINT"sv, { "GLenum"sv } },
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{ "GREEN_BITS"sv, { "GLint"sv } },
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{ "IMPLEMENTATION_COLOR_READ_FORMAT"sv, { "GLenum"sv } },
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{ "IMPLEMENTATION_COLOR_READ_TYPE"sv, { "GLenum"sv } },
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{ "LINE_WIDTH"sv, { "GLfloat"sv } },
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{ "MAX_COMBINED_TEXTURE_IMAGE_UNITS"sv, { "GLint"sv } },
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{ "MAX_CUBE_MAP_TEXTURE_SIZE"sv, { "GLint"sv } },
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{ "MAX_FRAGMENT_UNIFORM_VECTORS"sv, { "GLint"sv } },
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{ "MAX_RENDERBUFFER_SIZE"sv, { "GLint"sv } },
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{ "MAX_TEXTURE_IMAGE_UNITS"sv, { "GLint"sv } },
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{ "MAX_TEXTURE_SIZE"sv, { "GLint"sv } },
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{ "MAX_VARYING_VECTORS"sv, { "GLint"sv } },
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{ "MAX_VERTEX_ATTRIBS"sv, { "GLint"sv } },
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{ "MAX_VERTEX_TEXTURE_IMAGE_UNITS"sv, { "GLint"sv } },
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{ "MAX_VERTEX_UNIFORM_VECTORS"sv, { "GLint"sv } },
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{ "MAX_VIEWPORT_DIMS"sv, { "Int32Array"sv, 2 } },
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{ "PACK_ALIGNMENT"sv, { "GLint"sv } },
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{ "POLYGON_OFFSET_FACTOR"sv, { "GLfloat"sv } },
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{ "POLYGON_OFFSET_FILL"sv, { "GLboolean"sv } },
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{ "POLYGON_OFFSET_UNITS"sv, { "GLfloat"sv } },
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{ "RED_BITS"sv, { "GLint"sv } },
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// FIXME: { "RENDERBUFFER_BINDING"sv, { "WebGLRenderbuffer"sv } },
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{ "RENDERER"sv, { "DOMString"sv } },
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{ "SAMPLE_ALPHA_TO_COVERAGE"sv, { "GLboolean"sv } },
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{ "SAMPLE_BUFFERS"sv, { "GLint"sv } },
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{ "SAMPLE_COVERAGE"sv, { "GLboolean"sv } },
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{ "SAMPLE_COVERAGE_INVERT"sv, { "GLboolean"sv } },
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{ "SAMPLE_COVERAGE_VALUE"sv, { "GLfloat"sv } },
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{ "SAMPLES"sv, { "GLint"sv } },
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{ "SCISSOR_BOX"sv, { "Int32Array"sv, 4 } },
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{ "SCISSOR_TEST"sv, { "GLboolean"sv } },
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{ "SHADING_LANGUAGE_VERSION"sv, { "DOMString"sv } },
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{ "STENCIL_BACK_FAIL"sv, { "GLenum"sv } },
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{ "STENCIL_BACK_FUNC"sv, { "GLenum"sv } },
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{ "STENCIL_BACK_PASS_DEPTH_FAIL"sv, { "GLenum"sv } },
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{ "STENCIL_BACK_PASS_DEPTH_PASS"sv, { "GLenum"sv } },
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{ "STENCIL_BACK_REF"sv, { "GLint"sv } },
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{ "STENCIL_BACK_VALUE_MASK"sv, { "GLuint"sv } },
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{ "STENCIL_BACK_WRITEMASK"sv, { "GLuint"sv } },
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{ "STENCIL_BITS"sv, { "GLint"sv } },
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{ "STENCIL_CLEAR_VALUE"sv, { "GLint"sv } },
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{ "STENCIL_FAIL"sv, { "GLenum"sv } },
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{ "STENCIL_FUNC"sv, { "GLenum"sv } },
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{ "STENCIL_PASS_DEPTH_FAIL"sv, { "GLenum"sv } },
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{ "STENCIL_PASS_DEPTH_PASS"sv, { "GLenum"sv } },
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{ "STENCIL_REF"sv, { "GLint"sv } },
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{ "STENCIL_TEST"sv, { "GLboolean"sv } },
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{ "STENCIL_VALUE_MASK"sv, { "GLuint"sv } },
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{ "STENCIL_WRITEMASK"sv, { "GLuint"sv } },
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{ "SUBPIXEL_BITS"sv, { "GLint"sv } },
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{ "TEXTURE_BINDING_2D"sv, { "WebGLTexture"sv } },
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{ "TEXTURE_BINDING_CUBE_MAP"sv, { "WebGLTexture"sv } },
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{ "UNPACK_ALIGNMENT"sv, { "GLint"sv } },
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// FIXME: { "UNPACK_COLORSPACE_CONVERSION_WEBGL"sv, { "GLenum"sv } },
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// FIXME: { "UNPACK_FLIP_Y_WEBGL"sv, { "GLboolean"sv } },
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// FIXME: { "UNPACK_PREMULTIPLY_ALPHA_WEBGL"sv, { "GLboolean"sv } },
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{ "VENDOR"sv, { "DOMString"sv } },
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{ "VERSION"sv, { "DOMString"sv } },
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{ "VIEWPORT"sv, { "Int32Array"sv, 4 } },
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};
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auto is_primitive_type = [](StringView type) {
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return type == "GLboolean"sv || type == "GLint"sv || type == "GLfloat"sv || type == "GLenum"sv || type == "GLuint"sv;
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};
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generator.append(" switch (pname) {");
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for (auto const& name_and_type : name_to_type) {
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auto const& parameter_name = name_and_type.name;
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auto const& type_name = name_and_type.return_type.type;
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StringBuilder string_builder;
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SourceGenerator impl_generator { string_builder };
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impl_generator.set("parameter_name", parameter_name);
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impl_generator.set("type_name", type_name);
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impl_generator.append(R"~~~(
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case GL_@parameter_name@: {)~~~");
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if (is_primitive_type(type_name)) {
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impl_generator.append(R"~~~(
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GLint result;
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glGetIntegerv(GL_@parameter_name@, &result);
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return JS::Value(result);
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)~~~");
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} else if (type_name == "DOMString"sv) {
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impl_generator.append(R"~~~(
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auto result = reinterpret_cast<const char*>(glGetString(GL_@parameter_name@));
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return JS::PrimitiveString::create(m_realm->vm(), ByteString { result });)~~~");
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} else if (type_name == "Float32Array"sv || type_name == "Int32Array"sv) {
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auto element_count = name_and_type.return_type.element_count;
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impl_generator.set("element_count", MUST(String::formatted("{}", element_count)));
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if (type_name == "Int32Array"sv) {
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impl_generator.set("gl_function_name", "glGetIntegerv"sv);
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impl_generator.set("element_type", "GLint"sv);
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} else if (type_name == "Float32Array"sv) {
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impl_generator.set("gl_function_name", "glGetFloatv"sv);
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impl_generator.set("element_type", "GLfloat"sv);
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} else {
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VERIFY_NOT_REACHED();
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}
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impl_generator.append(R"~~~(
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Array<@element_type@, @element_count@> result;
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@gl_function_name@(GL_@parameter_name@, result.data());
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auto byte_buffer = MUST(ByteBuffer::copy(result.data(), @element_count@ * sizeof(@element_type@)));
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auto array_buffer = JS::ArrayBuffer::create(m_realm, move(byte_buffer));
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return JS::@type_name@::create(m_realm, @element_count@, array_buffer);
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)~~~");
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} else if (type_name == "WebGLProgram"sv || type_name == "WebGLBuffer"sv || type_name == "WebGLTexture"sv) {
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impl_generator.append(R"~~~(
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GLint result;
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glGetIntegerv(GL_@parameter_name@, &result);
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if (!result)
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return JS::js_null();
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return @type_name@::create(m_realm, result);
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)~~~");
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} else {
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VERIFY_NOT_REACHED();
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}
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impl_generator.append(" }");
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generator.append(string_builder.string_view());
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}
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generator.appendln(R"~~~(
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default:
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TODO();
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})~~~");
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}
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ErrorOr<int> serenity_main(Main::Arguments arguments)
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{
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StringView generated_header_path;
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@ -362,11 +531,7 @@ public:
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}
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if (function.name == "getParameter"sv) {
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function_impl_generator.append(R"~~~(
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GLint result = 0;
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glGetIntegerv(pname, &result);
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return JS::Value(result);
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)~~~");
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generate_get_parameter(function_impl_generator);
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continue;
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}
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