LibWeb: Generate WebGLRenderingContext implementation

This commit is contained in:
Aliaksandr Kalenik 2024-11-29 22:34:46 +01:00 committed by Alexander Kalenik
parent 45e0f50463
commit e2e54dccc3
Notes: github-actions[bot] 2024-12-03 22:37:17 +00:00
10 changed files with 316 additions and 261 deletions

View file

@ -853,6 +853,18 @@ invoke_generator(
generate_css_implementation()
invoke_generator(
"WebGLRenderingContextImpl.cpp"
Lagom::GenerateWebGLRenderingContext
"${CMAKE_CURRENT_SOURCE_DIR}/WebGL/WebGLRenderingContextBase.idl"
"WebGL/WebGLRenderingContextImpl.h"
"WebGL/WebGLRenderingContextImpl.cpp"
arguments -b "${CMAKE_CURRENT_SOURCE_DIR}" -b "${CMAKE_CURRENT_BINARY_DIR}" -i "${CMAKE_CURRENT_SOURCE_DIR}/WebGL/WebGLRenderingContext.idl"
# NOTE: GeneratedCSSStyleProperties.idl is listed because it's transitively included by WebGLRenderingContextBase.idl
# and we need to make sure it's generated before we generate the WebGLRenderingContext implementation.
dependencies WebGL/WebGLRenderingContextBase.idl WebGL/WebGLRenderingContextOverloads.idl CSS/GeneratedCSSStyleProperties.idl
)
set(GENERATED_SOURCES
ARIA/AriaRoles.cpp
CSS/DefaultStyleSheetSource.cpp
@ -868,6 +880,7 @@ set(GENERATED_SOURCES
CSS/TransformFunctions.cpp
MathML/MathMLStyleSheetSource.cpp
SVG/SVGStyleSheetSource.cpp
WebGL/WebGLRenderingContextImpl.cpp
Worker/WebWorkerClientEndpoint.h
Worker/WebWorkerServerEndpoint.h
)

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@ -831,9 +831,18 @@ struct OscillatorOptions;
}
namespace Web::WebGL {
class OpenGLContext;
class WebGLActiveInfo;
class WebGLBuffer;
class WebGLContextEvent;
class WebGLFramebuffer;
class WebGLObject;
class WebGLProgram;
class WebGLRenderbuffer;
class WebGLRenderingContext;
class WebGLRenderingContextBase;
class WebGLShader;
class WebGLTexture;
class WebGLUniformLocation;
}
namespace Web::WebIDL {

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@ -10,7 +10,6 @@
#include <LibGfx/Forward.h>
#include <LibGfx/PaintingSurface.h>
#include <LibWeb/HTML/HTMLElement.h>
#include <LibWeb/WebGL/WebGLRenderingContext.h>
#include <LibWeb/WebIDL/Types.h>
namespace Web::HTML {

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@ -13,9 +13,8 @@
#include <LibWeb/HTML/TraversableNavigable.h>
#include <LibWeb/Painting/Paintable.h>
#include <LibWeb/WebGL/EventNames.h>
#include <LibWeb/WebGL/WebGLBuffer.h>
#include <LibWeb/WebGL/OpenGLContext.h>
#include <LibWeb/WebGL/WebGLContextEvent.h>
#include <LibWeb/WebGL/WebGLProgram.h>
#include <LibWeb/WebGL/WebGLRenderingContext.h>
#include <LibWeb/WebGL/WebGLShader.h>
#include <LibWeb/WebIDL/Buffers.h>
@ -27,13 +26,6 @@ namespace Web::WebGL {
GC_DEFINE_ALLOCATOR(WebGLRenderingContext);
#define RETURN_WITH_WEBGL_ERROR_IF(condition, error) \
if (condition) { \
dbgln_if(WEBGL_CONTEXT_DEBUG, "{}(): error {:#x}", __func__, error); \
set_error(error); \
return; \
}
// https://www.khronos.org/registry/webgl/specs/latest/1.0/#fire-a-webgl-context-event
static void fire_webgl_context_event(HTML::HTMLCanvasElement& canvas_element, FlyString const& type)
{
@ -59,7 +51,6 @@ JS::ThrowCompletionOr<GC::Ptr<WebGLRenderingContext>> WebGLRenderingContext::cre
auto skia_backend_context = canvas_element.navigable()->traversable_navigable()->skia_backend_context();
auto context = OpenGLContext::create(*skia_backend_context);
if (!context) {
fire_webgl_context_creation_error(canvas_element);
return GC::Ptr<WebGLRenderingContext> { nullptr };
@ -72,7 +63,7 @@ JS::ThrowCompletionOr<GC::Ptr<WebGLRenderingContext>> WebGLRenderingContext::cre
WebGLRenderingContext::WebGLRenderingContext(JS::Realm& realm, HTML::HTMLCanvasElement& canvas_element, NonnullOwnPtr<OpenGLContext> context, WebGLContextAttributes context_creation_parameters, WebGLContextAttributes actual_context_parameters)
: PlatformObject(realm)
, m_context(move(context))
, WebGLRenderingContextImpl(realm, move(context))
, m_canvas_element(canvas_element)
, m_context_creation_parameters(context_creation_parameters)
, m_actual_context_parameters(actual_context_parameters)
@ -107,7 +98,7 @@ void WebGLRenderingContext::present()
// This default behavior can be changed by setting the preserveDrawingBuffer attribute of the WebGLContextAttributes object.
// If this flag is true, the contents of the drawing buffer shall be preserved until the author either clears or overwrites them."
if (!m_context_creation_parameters.preserve_drawing_buffer) {
m_context->clear_buffer_to_default_values();
context().clear_buffer_to_default_values();
}
}
@ -142,7 +133,7 @@ bool WebGLRenderingContext::is_context_lost() const
void WebGLRenderingContext::set_size(Gfx::IntSize const& size)
{
m_context->set_size(size);
context().set_size(size);
}
void WebGLRenderingContext::reset_to_default_state()
@ -151,213 +142,12 @@ void WebGLRenderingContext::reset_to_default_state()
RefPtr<Gfx::PaintingSurface> WebGLRenderingContext::surface()
{
return m_context->surface();
return context().surface();
}
void WebGLRenderingContext::allocate_painting_surface_if_needed()
{
m_context->allocate_painting_surface_if_needed();
}
Optional<Vector<String>> WebGLRenderingContext::get_supported_extensions() const
{
if (m_context_lost)
return Optional<Vector<String>> {};
dbgln_if(WEBGL_CONTEXT_DEBUG, "WebGLRenderingContext::get_supported_extensions()");
// FIXME: We don't currently support any extensions.
return Vector<String> {};
}
JS::Object* WebGLRenderingContext::get_extension(String const& name) const
{
if (m_context_lost)
return nullptr;
dbgln_if(WEBGL_CONTEXT_DEBUG, "WebGLRenderingContext::get_extension(name='{}')", name);
// FIXME: We don't currently support any extensions.
return nullptr;
}
void WebGLRenderingContext::active_texture(GLenum texture)
{
if (m_context_lost)
return;
dbgln_if(WEBGL_CONTEXT_DEBUG, "WebGLRenderingContext::active_texture(texture={:#08x})", texture);
}
void WebGLRenderingContext::clear(GLbitfield mask)
{
if (m_context_lost)
return;
dbgln_if(WEBGL_CONTEXT_DEBUG, "WebGLRenderingContext::clear(mask={:#08x})", mask);
// FIXME: This should only be done if this is targeting the front buffer.
needs_to_present();
}
void WebGLRenderingContext::clear_color(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha)
{
if (m_context_lost)
return;
dbgln_if(WEBGL_CONTEXT_DEBUG, "WebGLRenderingContext::clear_color(red={}, green={}, blue={}, alpha={})", red, green, blue, alpha);
}
void WebGLRenderingContext::clear_depth(GLclampf depth)
{
if (m_context_lost)
return;
dbgln_if(WEBGL_CONTEXT_DEBUG, "WebGLRenderingContext::clear_depth(depth={})", depth);
}
void WebGLRenderingContext::clear_stencil(GLint s)
{
if (m_context_lost)
return;
dbgln_if(WEBGL_CONTEXT_DEBUG, "WebGLRenderingContext::clear_stencil(s={:#08x})", s);
}
void WebGLRenderingContext::color_mask(GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha)
{
if (m_context_lost)
return;
dbgln_if(WEBGL_CONTEXT_DEBUG, "WebGLRenderingContext::color_mask(red={}, green={}, blue={}, alpha={})", red, green, blue, alpha);
}
void WebGLRenderingContext::cull_face(GLenum mode)
{
if (m_context_lost)
return;
dbgln_if(WEBGL_CONTEXT_DEBUG, "WebGLRenderingContext::cull_face(mode={:#08x})", mode);
}
void WebGLRenderingContext::depth_func(GLenum func)
{
if (m_context_lost)
return;
dbgln_if(WEBGL_CONTEXT_DEBUG, "WebGLRenderingContext::depth_func(func={:#08x})", func);
}
void WebGLRenderingContext::depth_mask(GLboolean mask)
{
if (m_context_lost)
return;
dbgln_if(WEBGL_CONTEXT_DEBUG, "WebGLRenderingContext::depth_mask(mask={})", mask);
}
void WebGLRenderingContext::depth_range(GLclampf z_near, GLclampf z_far)
{
if (m_context_lost)
return;
dbgln_if(WEBGL_CONTEXT_DEBUG, "WebGLRenderingContext::depth_range(z_near={}, z_far={})", z_near, z_far);
// https://www.khronos.org/registry/webgl/specs/latest/1.0/#VIEWPORT_DEPTH_RANGE
// "The WebGL API does not support depth ranges with where the near plane is mapped to a value greater than that of the far plane. A call to depthRange will generate an INVALID_OPERATION error if zNear is greater than zFar."
RETURN_WITH_WEBGL_ERROR_IF(z_near > z_far, GL_INVALID_OPERATION);
}
void WebGLRenderingContext::finish()
{
if (m_context_lost)
return;
dbgln_if(WEBGL_CONTEXT_DEBUG, "WebGLRenderingContext::finish()");
}
void WebGLRenderingContext::flush()
{
if (m_context_lost)
return;
dbgln_if(WEBGL_CONTEXT_DEBUG, "WebGLRenderingContext::flush()");
}
void WebGLRenderingContext::front_face(GLenum mode)
{
if (m_context_lost)
return;
dbgln_if(WEBGL_CONTEXT_DEBUG, "WebGLRenderingContext::front_face(mode={:#08x})", mode);
}
GLenum WebGLRenderingContext::get_error()
{
dbgln_if(WEBGL_CONTEXT_DEBUG, "WebGLRenderingContext::get_error()");
// "If the context's webgl context lost flag is set, returns CONTEXT_LOST_WEBGL the first time this method is called. Afterward, returns NO_ERROR until the context has been restored."
// FIXME: The plan here is to make the context lost handler unconditionally set m_error to CONTEXT_LOST_WEBGL, which we currently do not have.
// The idea for the unconditional set is that any potentially error generating functions will not execute when the context is lost.
if (m_error != GL_NO_ERROR || m_context_lost) {
auto last_error = m_error;
m_error = GL_NO_ERROR;
return last_error;
}
return glGetError();
}
void WebGLRenderingContext::line_width(GLfloat width)
{
if (m_context_lost)
return;
dbgln_if(WEBGL_CONTEXT_DEBUG, "WebGLRenderingContext::line_width(width={})", width);
// https://www.khronos.org/registry/webgl/specs/latest/1.0/#NAN_LINE_WIDTH
// "In the WebGL API, if the width parameter passed to lineWidth is set to NaN, an INVALID_VALUE error is generated and the line width is not changed."
RETURN_WITH_WEBGL_ERROR_IF(isnan(width), GL_INVALID_VALUE);
}
void WebGLRenderingContext::polygon_offset(GLfloat factor, GLfloat units)
{
if (m_context_lost)
return;
dbgln_if(WEBGL_CONTEXT_DEBUG, "WebGLRenderingContext::polygon_offset(factor={}, units={})", factor, units);
}
void WebGLRenderingContext::scissor(GLint x, GLint y, GLsizei width, GLsizei height)
{
if (m_context_lost)
return;
dbgln_if(WEBGL_CONTEXT_DEBUG, "WebGLRenderingContext::scissor(x={}, y={}, width={}, height={})", x, y, width, height);
}
void WebGLRenderingContext::stencil_op(GLenum fail, GLenum zfail, GLenum zpass)
{
if (m_context_lost)
return;
dbgln_if(WEBGL_CONTEXT_DEBUG, "WebGLRenderingContext::stencil_op(fail={:#08x}, zfail={:#08x}, zpass={:#08x})", fail, zfail, zpass);
}
void WebGLRenderingContext::stencil_op_separate(GLenum face, GLenum fail, GLenum zfail, GLenum zpass)
{
if (m_context_lost)
return;
dbgln_if(WEBGL_CONTEXT_DEBUG, "WebGLRenderingContext::stencil_op_separate(face={:#08x}, fail={:#08x}, zfail={:#08x}, zpass={:#08x})", face, fail, zfail, zpass);
}
void WebGLRenderingContext::viewport(GLint x, GLint y, GLsizei width, GLsizei height)
{
if (m_context_lost)
return;
dbgln_if(WEBGL_CONTEXT_DEBUG, "WebGLRenderingContext::viewport(x={}, y={}, width={}, height={})", x, y, width, height);
context().allocate_painting_surface_if_needed();
}
}

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@ -10,13 +10,14 @@
#include <LibGC/Ptr.h>
#include <LibWeb/Bindings/PlatformObject.h>
#include <LibWeb/Forward.h>
#include <LibWeb/WebGL/OpenGLContext.h>
#include <LibWeb/WebGL/Types.h>
#include <LibWeb/WebGL/WebGLContextAttributes.h>
#include <LibWeb/WebGL/WebGLRenderingContextImpl.h>
namespace Web::WebGL {
class WebGLRenderingContext : public Bindings::PlatformObject {
class WebGLRenderingContext : public Bindings::PlatformObject
, public WebGLRenderingContextImpl {
WEB_PLATFORM_OBJECT(WebGLRenderingContext, Bindings::PlatformObject);
GC_DECLARE_ALLOCATOR(WebGLRenderingContext);
@ -25,8 +26,8 @@ public:
virtual ~WebGLRenderingContext() override;
void present();
void needs_to_present();
void present() override;
void needs_to_present() override;
GC::Ref<HTML::HTMLCanvasElement> canvas_for_binding() const;
@ -38,40 +39,6 @@ public:
void set_size(Gfx::IntSize const&);
void reset_to_default_state();
Optional<Vector<String>> get_supported_extensions() const;
JS::Object* get_extension(String const& name) const;
void active_texture(GLenum texture);
void clear(GLbitfield mask);
void clear_color(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);
void clear_depth(GLclampf depth);
void clear_stencil(GLint s);
void color_mask(GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha);
void cull_face(GLenum mode);
void depth_func(GLenum func);
void depth_mask(GLboolean mask);
void depth_range(GLclampf z_near, GLclampf z_far);
void finish();
void flush();
void front_face(GLenum mode);
GLenum get_error();
void line_width(GLfloat width);
void polygon_offset(GLfloat factor, GLfloat units);
void scissor(GLint x, GLint y, GLsizei width, GLsizei height);
void stencil_op(GLenum fail, GLenum zfail, GLenum zpass);
void stencil_op_separate(GLenum face, GLenum fail, GLenum zfail, GLenum zpass);
void viewport(GLint x, GLint y, GLsizei width, GLsizei height);
private:
virtual void initialize(JS::Realm&) override;
@ -79,8 +46,6 @@ private:
virtual void visit_edges(Cell::Visitor&) override;
OwnPtr<OpenGLContext> m_context;
GC::Ref<HTML::HTMLCanvasElement> m_canvas_element;
// https://www.khronos.org/registry/webgl/specs/latest/1.0/#context-creation-parameters

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@ -30,10 +30,10 @@ interface mixin WebGLRenderingContextBase {
[FIXME] attribute PredefinedColorSpace unpackColorSpace;
[FIXME] WebGLContextAttributes? getContextAttributes();
boolean isContextLost();
[FIXME] boolean isContextLost();
sequence<DOMString>? getSupportedExtensions();
object? getExtension(DOMString name);
[FIXME] sequence<DOMString>? getSupportedExtensions();
[FIXME] object? getExtension(DOMString name);
undefined activeTexture(GLenum texture);
[FIXME] undefined attachShader(WebGLProgram program, WebGLShader shader);

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@ -105,7 +105,16 @@ static bool is_platform_object(Type const& type)
"VTTRegion"sv,
"VideoTrack"sv,
"VideoTrackList"sv,
"WebGLActiveInfo"sv,
"WebGLBuffer"sv,
"WebGLFramebuffer"sv,
"WebGLObject"sv,
"WebGLProgram"sv,
"WebGLRenderbuffer"sv,
"WebGLRenderingContext"sv,
"WebGLShader"sv,
"WebGLTexture"sv,
"WebGLUniformLocation"sv,
"Window"sv,
"WindowProxy"sv,
"WritableStream"sv,

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@ -28,6 +28,8 @@ void generate_iterator_prototype_implementation(IDL::Interface const&, StringBui
void generate_global_mixin_header(IDL::Interface const&, StringBuilder&);
void generate_global_mixin_implementation(IDL::Interface const&, StringBuilder&);
CppType idl_type_name_to_cpp_type(Type const& type, Interface const& interface);
extern Vector<StringView> g_header_search_paths;
}

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@ -10,5 +10,6 @@ lagom_tool(GenerateCSSStyleProperties SOURCES GenerateCSSStyleProperties.c
lagom_tool(GenerateCSSTransformFunctions SOURCES GenerateCSSTransformFunctions.cpp LIBS LibMain)
lagom_tool(GenerateWindowOrWorkerInterfaces SOURCES GenerateWindowOrWorkerInterfaces.cpp LIBS LibMain LibIDL)
lagom_tool(GenerateAriaRoles SOURCES GenerateAriaRoles.cpp LIBS LibMain)
lagom_tool(GenerateWebGLRenderingContext SOURCES GenerateWebGLRenderingContext.cpp BindingsGenerator/IDLGenerators.cpp LIBS LibMain LibIDL)
add_subdirectory(BindingsGenerator)

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@ -0,0 +1,267 @@
/*
* Copyright (c) 2024, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "BindingsGenerator/IDLGenerators.h"
#include <AK/SourceGenerator.h>
#include <AK/StringBuilder.h>
#include <LibCore/ArgsParser.h>
#include <LibCore/File.h>
#include <LibIDL/IDLParser.h>
#include <LibMain/Main.h>
static bool is_webgl_object_type(StringView type_name)
{
return type_name == "WebGLShader"sv
|| type_name == "WebGLBuffer"sv
|| type_name == "WebGLFramebuffer"sv
|| type_name == "WebGLProgram"sv
|| type_name == "WebGLRenderbuffer"sv
|| type_name == "WebGLTexture"sv
|| type_name == "WebGLUniformLocation"sv;
}
static bool gl_function_modifies_framebuffer(StringView function_name)
{
return function_name == "clearColor"sv || function_name == "drawArrays"sv || function_name == "drawElements"sv;
}
static ByteString to_cpp_type(const IDL::Type& type, const IDL::Interface& interface)
{
if (type.name() == "undefined"sv)
return "void"sv;
if (type.name() == "object"sv) {
if (type.is_nullable())
return "JS::Object*"sv;
return "JS::Object&"sv;
}
auto cpp_type = idl_type_name_to_cpp_type(type, interface);
return cpp_type.name;
}
static ByteString idl_to_gl_function_name(StringView function_name)
{
StringBuilder gl_function_name_builder;
gl_function_name_builder.append("gl"sv);
for (size_t i = 0; i < function_name.length(); ++i) {
if (i == 0) {
gl_function_name_builder.append(to_ascii_uppercase(function_name[i]));
} else {
gl_function_name_builder.append(function_name[i]);
}
}
if (function_name == "clearDepth"sv || function_name == "depthRange"sv) {
gl_function_name_builder.append("f"sv);
}
return gl_function_name_builder.to_byte_string();
}
ErrorOr<int> serenity_main(Main::Arguments arguments)
{
StringView generated_header_path;
StringView generated_implementation_path;
Vector<ByteString> base_paths;
StringView webgl_context_idl_path;
Core::ArgsParser args_parser;
args_parser.add_option(webgl_context_idl_path, "Path to the WebGLRenderingContext.idl file", "webgl-idl-path", 'i', "webgl-idl-path");
args_parser.add_option(Core::ArgsParser::Option {
.argument_mode = Core::ArgsParser::OptionArgumentMode::Required,
.help_string = "Path to root of IDL file tree(s)",
.long_name = "base-path",
.short_name = 'b',
.value_name = "base-path",
.accept_value = [&](StringView s) {
base_paths.append(s);
return true;
},
});
args_parser.add_option(generated_header_path, "Path to the Enums header file to generate", "generated-header-path", 'h', "generated-header-path");
args_parser.add_option(generated_implementation_path, "Path to the Enums implementation file to generate", "generated-implementation-path", 'c', "generated-implementation-path");
args_parser.parse(arguments);
auto generated_header_file = TRY(Core::File::open(generated_header_path, Core::File::OpenMode::Write));
auto generated_implementation_file = TRY(Core::File::open(generated_implementation_path, Core::File::OpenMode::Write));
auto idl_file = MUST(Core::File::open(webgl_context_idl_path, Core::File::OpenMode::Read));
auto webgl_context_idl_file_content = MUST(idl_file->read_until_eof());
Vector<ByteString> import_base_paths;
for (auto const& base_path : base_paths) {
VERIFY(!base_path.is_empty());
import_base_paths.append(base_path);
}
IDL::Parser parser(webgl_context_idl_path, StringView(webgl_context_idl_file_content), import_base_paths);
auto const& interface = parser.parse();
StringBuilder header_file_string_builder;
SourceGenerator header_file_generator { header_file_string_builder };
StringBuilder implementation_file_string_builder;
SourceGenerator implementation_file_generator { implementation_file_string_builder };
implementation_file_generator.append(R"~~~(
#include <LibJS/Runtime/ArrayBuffer.h>
#include <LibJS/Runtime/TypedArray.h>
#include <LibWeb/WebGL/OpenGLContext.h>
#include <LibWeb/WebGL/WebGLActiveInfo.h>
#include <LibWeb/WebGL/WebGLBuffer.h>
#include <LibWeb/WebGL/WebGLFramebuffer.h>
#include <LibWeb/WebGL/WebGLProgram.h>
#include <LibWeb/WebGL/WebGLRenderbuffer.h>
#include <LibWeb/WebGL/WebGLRenderingContextImpl.h>
#include <LibWeb/WebGL/WebGLShader.h>
#include <LibWeb/WebGL/WebGLTexture.h>
#include <LibWeb/WebGL/WebGLUniformLocation.h>
#include <LibWeb/WebIDL/Buffers.h>
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
namespace Web::WebGL {
WebGLRenderingContextImpl::WebGLRenderingContextImpl(JS::Realm& realm, NonnullOwnPtr<OpenGLContext> context)
: m_realm(realm)
, m_context(move(context))
{
}
)~~~");
header_file_generator.append(R"~~~(
#pragma once
#include <AK/NonnullOwnPtr.h>
#include <LibGC/Ptr.h>
#include <LibGfx/Bitmap.h>
#include <LibWeb/Bindings/PlatformObject.h>
#include <LibWeb/Forward.h>
#include <LibWeb/HTML/HTMLCanvasElement.h>
#include <LibWeb/HTML/HTMLImageElement.h>
#include <LibWeb/WebIDL/Types.h>
namespace Web::WebGL {
using namespace Web::HTML;
class WebGLRenderingContextImpl {
public:
WebGLRenderingContextImpl(JS::Realm&, NonnullOwnPtr<OpenGLContext>);
OpenGLContext& context() { return *m_context; }
virtual void present() = 0;
virtual void needs_to_present() = 0;
)~~~");
for (auto const& function : interface.functions) {
if (function.extended_attributes.contains("FIXME")) {
continue;
}
StringBuilder function_declaration;
StringBuilder function_parameters;
for (size_t i = 0; i < function.parameters.size(); ++i) {
auto const& parameter = function.parameters[i];
function_parameters.append(to_cpp_type(*parameter.type, interface));
function_parameters.append(" "sv);
function_parameters.append(parameter.name);
if (i != function.parameters.size() - 1) {
function_parameters.append(", "sv);
}
}
auto function_name = function.name.to_snakecase();
function_declaration.append(to_cpp_type(*function.return_type, interface));
function_declaration.append(" "sv);
function_declaration.append(function_name);
function_declaration.append("("sv);
function_declaration.append(function_parameters.string_view());
function_declaration.append(");"sv);
header_file_generator.append(" "sv);
header_file_generator.append(function_declaration.string_view());
header_file_generator.append("\n"sv);
StringBuilder function_impl;
SourceGenerator function_impl_generator { function_impl };
ScopeGuard function_guard { [&] {
function_impl_generator.append("}\n"sv);
implementation_file_generator.append(function_impl_generator.as_string_view().bytes());
} };
function_impl_generator.set("function_name", function_name);
function_impl_generator.set("function_parameters", function_parameters.string_view());
function_impl_generator.set("function_return_type", to_cpp_type(*function.return_type, interface));
function_impl_generator.append(R"~~~(
@function_return_type@ WebGLRenderingContextImpl::@function_name@(@function_parameters@)
{
m_context->make_current();
)~~~");
Vector<ByteString> gl_call_arguments;
for (size_t i = 0; i < function.parameters.size(); ++i) {
auto const& parameter = function.parameters[i];
if (parameter.type->is_numeric() || parameter.type->is_boolean()) {
gl_call_arguments.append(parameter.name);
continue;
}
if (parameter.type->is_string()) {
gl_call_arguments.append(ByteString::formatted("{}", parameter.name));
continue;
}
if (is_webgl_object_type(parameter.type->name())) {
gl_call_arguments.append(ByteString::formatted("{} ? {}->handle() : 0", parameter.name, parameter.name));
continue;
}
VERIFY_NOT_REACHED();
}
StringBuilder gl_call_arguments_string_builder;
gl_call_arguments_string_builder.join(", "sv, gl_call_arguments);
auto gl_call_string = ByteString::formatted("{}({})", idl_to_gl_function_name(function.name), gl_call_arguments_string_builder.string_view());
function_impl_generator.set("call_string", gl_call_string);
if (gl_function_modifies_framebuffer(function.name)) {
function_impl_generator.append(" needs_to_present();\n"sv);
}
if (function.return_type->name() == "undefined"sv) {
function_impl_generator.append(" @call_string@;"sv);
} else if (function.return_type->is_integer() || function.return_type->is_boolean()) {
function_impl_generator.append(" return @call_string@;"sv);
} else if (is_webgl_object_type(function.return_type->name())) {
function_impl_generator.set("return_type_name", function.return_type->name());
function_impl_generator.append(" return @return_type_name@::create(m_realm, @call_string@);"sv);
} else {
VERIFY_NOT_REACHED();
}
function_impl_generator.append("\n"sv);
}
header_file_generator.append(R"~~~(
private:
GC::Ref<JS::Realm> m_realm;
NonnullOwnPtr<OpenGLContext> m_context;
};
}
)~~~");
implementation_file_generator.append(R"~~~(
}
)~~~");
MUST(generated_header_file->write_until_depleted(header_file_generator.as_string_view().bytes()));
MUST(generated_implementation_file->write_until_depleted(implementation_file_generator.as_string_view().bytes()));
return 0;
}