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LibWeb: Bind the default frame/render buffers when resetting context

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This fixes the masking and warping effects on pixijs.com.

Co-authored-by: Luke Wilde <luke@ladybird.org>
This commit is contained in:
Zaggy1024 2025-10-29 14:44:23 -07:00 committed by Jelle Raaijmakers
parent 3708ac5599
commit 7e20b21879
1 changed files with 18 additions and 0 deletions
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18
Libraries/LibWeb/WebGL/OpenGLContext.cpp
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@ -22,6 +22,7 @@ extern "C" {
extern "C" {
#include <GLES2/gl2ext_angle.h>
}
#include <GLES3/gl3.h>
// Enable WebGL if we're on MacOS and can use Metal or if we can use shareable Vulkan images
#if defined(AK_OS_MACOS) || defined(USE_VULKAN_IMAGES)
@ -236,6 +237,20 @@ void OpenGLContext::notify_content_will_change()
void OpenGLContext::clear_buffer_to_default_values()
{
#ifdef ENABLE_WEBGL
GLint original_framebuffer;
GLint original_renderbuffer;
GLenum framebuffer_target = GL_FRAMEBUFFER;
GLenum framebuffer_binding = GL_FRAMEBUFFER_BINDING;
if (m_webgl_version == WebGLVersion::WebGL2) {
framebuffer_target = GL_DRAW_FRAMEBUFFER;
framebuffer_binding = GL_DRAW_FRAMEBUFFER_BINDING;
}
glGetIntegerv(framebuffer_binding, &original_framebuffer);
glGetIntegerv(GL_RENDERBUFFER_BINDING, &original_renderbuffer);
glBindFramebuffer(framebuffer_target, default_framebuffer());
glBindRenderbuffer(GL_RENDERBUFFER, default_renderbuffer());
Array<GLfloat, 4> current_clear_color;
glGetFloatv(GL_COLOR_CLEAR_VALUE, current_clear_color.data());
@ -260,6 +275,9 @@ void OpenGLContext::clear_buffer_to_default_values()
glClearColor(current_clear_color[0], current_clear_color[1], current_clear_color[2], current_clear_color[3]);
glClearDepthf(current_clear_depth);
glClearStencil(current_clear_stencil);
glBindFramebuffer(framebuffer_target, original_framebuffer);
glBindRenderbuffer(GL_RENDERBUFFER, original_renderbuffer);
#endif
}