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LibGL: Add ability to retrieve current clear values from GLContext

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This allows WebGL to preserve the clear values as it performs an
implicit clear to certain values.
This commit is contained in:
Luke Wilde 2022-06-04 04:29:15 +01:00 committed by Linus Groh
parent 58f882200c
commit 68d9d4e247
Notes: sideshowbarker 2024-07-17 10:16:07 +09:00 
Author: https://github.com/Lubrsi
Commit: https://github.com/SerenityOS/serenity/commit/68d9d4e247
Pull-request: https://github.com/SerenityOS/serenity/pull/14184
Reviewed-by: https://github.com/Quaker762 ✅
Reviewed-by: https://github.com/gmta ✅
Reviewed-by: https://github.com/linusg ✅
Reviewed-by: https://github.com/sunverwerth
1 changed files with 6 additions and 0 deletions
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6
Userland/Libraries/LibGL/GLContext.h
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@ -91,6 +91,12 @@ public:
NonnullRefPtr<Gfx::Bitmap> frontbuffer() const { return m_frontbuffer; };
void present();
// Used by WebGL to preserve the clear values when implicitly clearing the front buffer.
// FIXME: Add ContextParameters for these and expose them through methods such as gl_get_floatv instead of having a public API like this.
FloatVector4 current_clear_color() const { return m_clear_color; }
GLdouble current_clear_depth() const { return m_clear_depth; }
GLint current_clear_stencil() const { return m_clear_stencil; }
void gl_begin(GLenum mode);
void gl_clear(GLbitfield mask);
void gl_clear_color(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);