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render: egl: Add utility functions for saving/restoring context
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2 changed files with 31 additions and 0 deletions
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@ -30,6 +30,13 @@
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#include <wlr/render/dmabuf.h>
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#include <wlr/render/drm_format_set.h>
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struct wlr_egl_context {
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EGLDisplay display;
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EGLContext context;
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EGLSurface draw_surface;
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EGLSurface read_surface;
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};
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struct wlr_egl {
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EGLenum platform;
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EGLDisplay display;
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@ -137,6 +144,18 @@ bool wlr_egl_unset_current(struct wlr_egl *egl);
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bool wlr_egl_is_current(struct wlr_egl *egl);
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/**
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* Save the current EGL context to the structure provided in the argument.
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*
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* This includes display, context, draw surface and read surface.
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*/
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void wlr_egl_save_context(struct wlr_egl_context *context);
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/**
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* Restore EGL context that was previously saved using wlr_egl_save_current().
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*/
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bool wlr_egl_restore_context(struct wlr_egl_context *context);
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bool wlr_egl_swap_buffers(struct wlr_egl *egl, EGLSurface surface,
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pixman_region32_t *damage);
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12
render/egl.c
12
render/egl.c
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@ -411,6 +411,18 @@ bool wlr_egl_is_current(struct wlr_egl *egl) {
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return eglGetCurrentContext() == egl->context;
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}
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void wlr_egl_save_context(struct wlr_egl_context *context) {
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context->display = eglGetCurrentDisplay();
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context->context = eglGetCurrentContext();
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context->draw_surface = eglGetCurrentSurface(EGL_DRAW);
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context->read_surface = eglGetCurrentSurface(EGL_READ);
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}
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bool wlr_egl_restore_context(struct wlr_egl_context *context) {
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return eglMakeCurrent(context->display, context->draw_surface,
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context->read_surface, context->context);
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}
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bool wlr_egl_swap_buffers(struct wlr_egl *egl, EGLSurface surface,
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pixman_region32_t *damage) {
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// Never block when swapping buffers on Wayland
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