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ladybird/Libraries/LibWeb/WebGL/WebGLRenderingContextOverloads.cpp
Undefine c70886ab1f LibWeb: Split off WebGLRenderingContextImpl to Impl and Overloads 
This is more like what the IDL files specify with two different mixins,
but the inheritance structure here is slightly different for easier
maintenance. This will also allow the WebGL2 Impl to inherit from the
WebGL1 Impl as WebGL versions don't share the functions defined in the
Overloads interfaces.
2025-11-05 02:19:32 +01:00

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/*
* Copyright (c) 2024-2025, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
* Copyright (c) 2024-2025, Luke Wilde <luke@ladybird.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#define GL_GLEXT_PROTOTYPES 1
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
extern "C" {
#include <GLES2/gl2ext_angle.h>
}
#include <LibJS/Runtime/ArrayBuffer.h>
#include <LibJS/Runtime/DataView.h>
#include <LibJS/Runtime/TypedArray.h>
#include <LibWeb/WebGL/OpenGLContext.h>
#include <LibWeb/WebGL/WebGLRenderingContextOverloads.h>
#include <LibWeb/WebGL/WebGLUniformLocation.h>
namespace Web::WebGL {
WebGLRenderingContextOverloads::WebGLRenderingContextOverloads(JS::Realm& realm, NonnullOwnPtr<OpenGLContext> context)
: WebGLRenderingContextImpl(realm, move(context))
{
}
void WebGLRenderingContextOverloads::buffer_data(WebIDL::UnsignedLong target, WebIDL::LongLong size, WebIDL::UnsignedLong usage)
{
m_context->make_current();
glBufferData(target, size, 0, usage);
}
void WebGLRenderingContextOverloads::buffer_data(WebIDL::UnsignedLong target, GC::Root<WebIDL::BufferSource> data, WebIDL::UnsignedLong usage)
{
m_context->make_current();
auto span = MUST(get_offset_span<u8 const>(*data, /* src_offset= */ 0));
glBufferData(target, span.size(), span.data(), usage);
}
void WebGLRenderingContextOverloads::buffer_sub_data(WebIDL::UnsignedLong target, WebIDL::LongLong offset, GC::Root<WebIDL::BufferSource> data)
{
m_context->make_current();
auto span = MUST(get_offset_span<u8 const>(*data, /* src_offset= */ 0));
glBufferSubData(target, offset, span.size(), span.data());
}
void WebGLRenderingContextOverloads::compressed_tex_image2d(WebIDL::UnsignedLong target, WebIDL::Long level, WebIDL::UnsignedLong internalformat, WebIDL::Long width, WebIDL::Long height, WebIDL::Long border, GC::Root<WebIDL::ArrayBufferView> data)
{
m_context->make_current();
auto span = MUST(get_offset_span<u8 const>(*data, /* src_offset= */ 0));
glCompressedTexImage2DRobustANGLE(target, level, internalformat, width, height, border, span.size(), span.size(), span.data());
}
void WebGLRenderingContextOverloads::compressed_tex_sub_image2d(WebIDL::UnsignedLong target, WebIDL::Long level, WebIDL::Long xoffset, WebIDL::Long yoffset, WebIDL::Long width, WebIDL::Long height, WebIDL::UnsignedLong format, GC::Root<WebIDL::ArrayBufferView> data)
{
m_context->make_current();
auto span = MUST(get_offset_span<u8 const>(*data, /* src_offset= */ 0));
glCompressedTexSubImage2DRobustANGLE(target, level, xoffset, yoffset, width, height, format, span.size(), span.size(), span.data());
}
void WebGLRenderingContextOverloads::read_pixels(WebIDL::Long x, WebIDL::Long y, WebIDL::Long width, WebIDL::Long height, WebIDL::UnsignedLong format, WebIDL::UnsignedLong type, GC::Root<WebIDL::ArrayBufferView> pixels)
{
m_context->make_current();
if (!pixels) {
return;
}
auto span = MUST(get_offset_span<u8>(*pixels, /* src_offset= */ 0));
glReadPixelsRobustANGLE(x, y, width, height, format, type, span.size(), nullptr, nullptr, nullptr, span.data());
}
void WebGLRenderingContextOverloads::tex_image2d(WebIDL::UnsignedLong target, WebIDL::Long level, WebIDL::Long internalformat, WebIDL::Long width, WebIDL::Long height, WebIDL::Long border, WebIDL::UnsignedLong format, WebIDL::UnsignedLong type, GC::Root<WebIDL::ArrayBufferView> pixels)
{
m_context->make_current();
if (pixels) {
auto span = MUST(get_offset_span<u8>(*pixels, /* src_offset= */ 0));
glTexImage2DRobustANGLE(target, level, internalformat, width, height, border, format, type, span.size(), span.data());
return;
}
Checked<size_t> bytes = 0;
if (type == GL_UNSIGNED_SHORT_5_6_5 && format != GL_RGB) {
set_error(GL_INVALID_OPERATION);
return;
}
if ((type == GL_UNSIGNED_SHORT_4_4_4_4 || type == GL_UNSIGNED_SHORT_5_5_5_1) && format != GL_RGBA) {
set_error(GL_INVALID_OPERATION);
return;
}
switch (format) {
case GL_ALPHA:
case GL_LUMINANCE:
case GL_LUMINANCE_ALPHA: {
if (type != GL_UNSIGNED_BYTE) {
set_error(GL_INVALID_ENUM);
return;
}
bytes = format == GL_LUMINANCE_ALPHA ? 2 : 1;
break;
}
case GL_RGB:
case GL_RGBA: {
switch (type) {
case GL_UNSIGNED_BYTE:
bytes = format == GL_RGB ? 3 : 4;
break;
case GL_UNSIGNED_SHORT_4_4_4_4:
case GL_UNSIGNED_SHORT_5_5_5_1:
case GL_UNSIGNED_SHORT_5_6_5:
bytes = 2;
break;
default:
set_error(GL_INVALID_ENUM);
return;
}
break;
}
default:
set_error(GL_INVALID_ENUM);
return;
}
bytes *= width;
bytes *= height;
if (bytes.has_overflow()) {
set_error(GL_INVALID_OPERATION);
return;
}
auto byte_buffer = MUST(ByteBuffer::create_zeroed(bytes.value_unchecked()));
glTexImage2DRobustANGLE(target, level, internalformat, width, height, border, format, type, byte_buffer.size(), byte_buffer.data());
}
void WebGLRenderingContextOverloads::tex_image2d(WebIDL::UnsignedLong target, WebIDL::Long level, WebIDL::Long internalformat, WebIDL::UnsignedLong format, WebIDL::UnsignedLong type, TexImageSource source)
{
m_context->make_current();
auto maybe_converted_texture = read_and_pixel_convert_texture_image_source(source, format, type);
if (!maybe_converted_texture.has_value())
return;
auto converted_texture = maybe_converted_texture.release_value();
glTexImage2DRobustANGLE(target, level, internalformat, converted_texture.width, converted_texture.height, 0, format, type, converted_texture.buffer.size(), converted_texture.buffer.data());
}
void WebGLRenderingContextOverloads::tex_sub_image2d(WebIDL::UnsignedLong target, WebIDL::Long level, WebIDL::Long xoffset, WebIDL::Long yoffset, WebIDL::Long width, WebIDL::Long height, WebIDL::UnsignedLong format, WebIDL::UnsignedLong type, GC::Root<WebIDL::ArrayBufferView> pixels)
{
m_context->make_current();
auto span = MUST(get_offset_span<u8>(*pixels, /* src_offset= */ 0));
glTexSubImage2DRobustANGLE(target, level, xoffset, yoffset, width, height, format, type, span.size(), span.data());
}
void WebGLRenderingContextOverloads::tex_sub_image2d(WebIDL::UnsignedLong target, WebIDL::Long level, WebIDL::Long xoffset, WebIDL::Long yoffset, WebIDL::UnsignedLong format, WebIDL::UnsignedLong type, TexImageSource source)
{
m_context->make_current();
auto maybe_converted_texture = read_and_pixel_convert_texture_image_source(source, format, type);
if (!maybe_converted_texture.has_value())
return;
auto converted_texture = maybe_converted_texture.release_value();
glTexSubImage2DRobustANGLE(target, level, xoffset, yoffset, converted_texture.width, converted_texture.height, format, type, converted_texture.buffer.size(), converted_texture.buffer.data());
}
void WebGLRenderingContextOverloads::uniform1fv(GC::Root<WebGLUniformLocation> location, Float32List v)
{
m_context->make_current();
if (!location)
return;
auto span = MUST(span_from_float32_list(v, /* src_offset= */ 0));
glUniform1fv(location->handle(), span.size(), span.data());
}
void WebGLRenderingContextOverloads::uniform2fv(GC::Root<WebGLUniformLocation> location, Float32List v)
{
m_context->make_current();
if (!location)
return;
auto span = MUST(span_from_float32_list(v, /* src_offset= */ 0));
if (span.size() % 2 != 0) [[unlikely]] {
set_error(GL_INVALID_VALUE);
return;
}
glUniform2fv(location->handle(), span.size() / 2, span.data());
}
void WebGLRenderingContextOverloads::uniform3fv(GC::Root<WebGLUniformLocation> location, Float32List v)
{
m_context->make_current();
if (!location)
return;
auto span = MUST(span_from_float32_list(v, /* src_offset= */ 0));
if (span.size() % 3 != 0) [[unlikely]] {
set_error(GL_INVALID_VALUE);
return;
}
glUniform3fv(location->handle(), span.size() / 3, span.data());
}
void WebGLRenderingContextOverloads::uniform4fv(GC::Root<WebGLUniformLocation> location, Float32List v)
{
m_context->make_current();
if (!location)
return;
auto span = MUST(span_from_float32_list(v, /* src_offset= */ 0));
if (span.size() % 4 != 0) [[unlikely]] {
set_error(GL_INVALID_VALUE);
return;
}
glUniform4fv(location->handle(), span.size() / 4, span.data());
}
void WebGLRenderingContextOverloads::uniform1iv(GC::Root<WebGLUniformLocation> location, Int32List v)
{
m_context->make_current();
if (!location)
return;
auto span = MUST(span_from_int32_list(v, /* src_offset= */ 0));
glUniform1iv(location->handle(), span.size(), span.data());
}
void WebGLRenderingContextOverloads::uniform2iv(GC::Root<WebGLUniformLocation> location, Int32List v)
{
m_context->make_current();
if (!location)
return;
auto span = MUST(span_from_int32_list(v, /* src_offset= */ 0));
if (span.size() % 2 != 0) [[unlikely]] {
set_error(GL_INVALID_VALUE);
return;
}
glUniform2iv(location->handle(), span.size() / 2, span.data());
}
void WebGLRenderingContextOverloads::uniform3iv(GC::Root<WebGLUniformLocation> location, Int32List v)
{
m_context->make_current();
if (!location)
return;
auto span = MUST(span_from_int32_list(v, /* src_offset= */ 0));
if (span.size() % 3 != 0) [[unlikely]] {
set_error(GL_INVALID_VALUE);
return;
}
glUniform3iv(location->handle(), span.size() / 3, span.data());
}
void WebGLRenderingContextOverloads::uniform4iv(GC::Root<WebGLUniformLocation> location, Int32List v)
{
m_context->make_current();
if (!location)
return;
auto span = MUST(span_from_int32_list(v, /* src_offset= */ 0));
if (span.size() % 4 != 0) [[unlikely]] {
set_error(GL_INVALID_VALUE);
return;
}
glUniform4iv(location->handle(), span.size() / 4, span.data());
}
void WebGLRenderingContextOverloads::uniform_matrix2fv(GC::Root<WebGLUniformLocation> location, bool transpose, Float32List value)
{
m_context->make_current();
if (!location)
return;
constexpr auto matrix_size = 2 * 2;
auto span = MUST(span_from_float32_list(value, /* src_offset= */ 0));
if (span.size() % matrix_size != 0) [[unlikely]] {
set_error(GL_INVALID_VALUE);
return;
}
glUniformMatrix2fv(location->handle(), span.size() / matrix_size, transpose, span.data());
}
void WebGLRenderingContextOverloads::uniform_matrix3fv(GC::Root<WebGLUniformLocation> location, bool transpose, Float32List value)
{
m_context->make_current();
if (!location)
return;
constexpr auto matrix_size = 3 * 3;
auto span = MUST(span_from_float32_list(value, /* src_offset= */ 0));
if (span.size() % matrix_size != 0) [[unlikely]] {
set_error(GL_INVALID_VALUE);
return;
}
glUniformMatrix3fv(location->handle(), span.size() / matrix_size, transpose, span.data());
}
void WebGLRenderingContextOverloads::uniform_matrix4fv(GC::Root<WebGLUniformLocation> location, bool transpose, Float32List value)
{
m_context->make_current();
if (!location)
return;
constexpr auto matrix_size = 4 * 4;
auto span = MUST(span_from_float32_list(value, /* src_offset= */ 0));
if (span.size() % matrix_size != 0) [[unlikely]] {
set_error(GL_INVALID_VALUE);
return;
}
glUniformMatrix4fv(location->handle(), span.size() / matrix_size, transpose, span.data());
}
}
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