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LibWeb: Support GL_TEXTURE_2D for the ANGLE target

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This will be the returned egl configuration attribute for
EGL_BIND_TO_TEXTURE_TARGET_ANGLE once we transition to using the
Metal ANGLE backend directly.
This commit is contained in:
Andrew Kaster 2024-12-20 17:44:43 -07:00 • committed by Andrew Kaster
commit d5a84b402b
Notes: github-actions[bot] 2025-06-09 21:42:14 +00:00
1 changed files with 5 additions and 8 deletions
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13
Libraries/LibWeb/WebGL/OpenGLContext.cpp
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@ -194,22 +194,19 @@ void OpenGLContext::allocate_painting_surface_if_needed()
eglMakeCurrent(m_impl->display, m_impl->surface, m_impl->surface, m_impl->context);
// This extension is not enabled by default in WebGL compatibility mode, so we need to request it.
glRequestExtensionANGLE("GL_ANGLE_texture_rectangle");
EGLint texture_target_angle = 0;
eglGetConfigAttrib(display, config, EGL_BIND_TO_TEXTURE_TARGET_ANGLE, &texture_target_angle);
VERIFY(texture_target_angle == EGL_TEXTURE_RECTANGLE_ANGLE);
EGLint texture_target_name = 0;
eglGetConfigAttrib(display, config, EGL_BIND_TO_TEXTURE_TARGET_ANGLE, &texture_target_name);
VERIFY(texture_target_name == EGL_TEXTURE_RECTANGLE_ANGLE || texture_target_name == EGL_TEXTURE_2D);
GLuint texture = 0;
glGenTextures(1, &texture);
glBindTexture(GL_TEXTURE_RECTANGLE_ANGLE, texture);
glBindTexture(texture_target_name == EGL_TEXTURE_RECTANGLE_ANGLE ? GL_TEXTURE_RECTANGLE_ANGLE : GL_TEXTURE_2D, texture);
auto result = eglBindTexImage(display, m_impl->surface, EGL_BACK_BUFFER);
VERIFY(result == EGL_TRUE);
glGenFramebuffers(1, &m_impl->framebuffer);
glBindFramebuffer(GL_FRAMEBUFFER, m_impl->framebuffer);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_RECTANGLE_ANGLE, texture, 0);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, texture_target_name == EGL_TEXTURE_RECTANGLE_ANGLE ? GL_TEXTURE_RECTANGLE_ANGLE : GL_TEXTURE_2D, texture, 0);
// NOTE: ANGLE doesn't allocate depth buffer for us, so we need to do it manually
// FIXME: Depth buffer only needs to be allocated if it's configured in WebGL context attributes