Implement async shader compilation in ANGLE

EIRTeam · Dec 14, 2021 · 7c9f9fa · 7c9f9fa
1 parent 6edad44
commit 7c9f9fa
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Showing 2 changed files with 21 additions and 0 deletions.
diff --git a/platform/windows/context_gl_windows_angle.cpp b/platform/windows/context_gl_windows_angle.cpp
@@ -62,6 +62,18 @@ void ContextGL_Windows::make_current() {
 	eglMakeCurrent(mEglDisplay, mEglSurface, mEglSurface, mEglContext);
 }
 
+bool ContextGL_Windows::is_offscreen_available() const {
+	return mEglContext_offscreen != EGL_NO_CONTEXT;
+}
+
+void ContextGL_Windows::make_offscreen_current() {
+	ERR_FAIL_COND(eglMakeCurrent(mEglDisplay, mEglSurface, mEglSurface, mEglContext_offscreen) != EGL_TRUE);
+}
+
+void ContextGL_Windows::release_offscreen_current() {
+	ERR_FAIL_COND(eglMakeCurrent(mEglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT) != EGL_TRUE);
+}
+
 HDC ContextGL_Windows::get_hdc() {
 	return hDC;
 }
@@ -141,6 +153,9 @@ void ContextGL_Windows::cleanup() {
 	if (mEglDisplay != EGL_NO_DISPLAY && mEglContext != EGL_NO_CONTEXT) {
 		eglDestroyContext(mEglDisplay, mEglContext);
 		mEglContext = EGL_NO_CONTEXT;
+		if (mEglContext_offscreen != EGL_NO_CONTEXT) {
+			eglDestroyContext(mEglDisplay, mEglContext_offscreen);
+		}
 	}
 
 	if (mEglDisplay != EGL_NO_DISPLAY) {
@@ -317,6 +332,7 @@ ContextGL_Windows::ContextGL_Windows(HWND hwnd, bool p_opengl_3_context) {
 	opengl_3_context = p_opengl_3_context;
 	hWnd = hwnd;
 	use_vsync = false;
+	mEglContext_offscreen = EGL_NO_CONTEXT;
 	vsync_via_compositor = false;
 }
 

diff --git a/platform/windows/context_gl_windows_angle.h b/platform/windows/context_gl_windows_angle.h
@@ -66,6 +66,10 @@ class ContextGL_Windows {
 
 	void make_current();
 
+	bool is_offscreen_available() const;
+	void make_offscreen_current();
+	void release_offscreen_current();
+
 	HDC get_hdc();
 	HGLRC get_hglrc();
 
@@ -85,6 +89,7 @@ class ContextGL_Windows {
 private:
 	EGLDisplay mEglDisplay;
 	EGLContext mEglContext;
+	EGLContext mEglContext_offscreen;
 	EGLSurface mEglSurface;
 
 	EGLint width;