X-Git-Url: https://git.cworth.org/git?a=blobdiff_plain;f=retrace%2Fglws_egl_xlib.cpp;h=5aacdfed2b5bea5c0b738b907711d936610a93f8;hb=48c661ea6c0f2bd9b76a3385cd946b7d07bc9b5f;hp=0b8f34c17bc595d192d297cf5517901632abbb05;hpb=06555614b7385c49964d27aaeec68dec6ff31744;p=apitrace

diff --git a/retrace/glws_egl_xlib.cpp b/retrace/glws_egl_xlib.cpp
index 0b8f34c..5aacdfe 100644
--- a/retrace/glws_egl_xlib.cpp
+++ b/retrace/glws_egl_xlib.cpp
@@ -92,8 +92,9 @@ public:
     EGLSurface surface;
     EGLint api;
 
-    EglDrawable(const Visual *vis, int w, int h) :
-        Drawable(vis, w, h), api(EGL_OPENGL_ES_API)
+    EglDrawable(const Visual *vis, int w, int h, bool pbuffer) :
+        Drawable(vis, w, h, pbuffer),
+        api(EGL_OPENGL_ES_API)
     {
         XVisualInfo *visinfo = static_cast<const EglVisual *>(visual)->visinfo;
 
@@ -155,6 +156,28 @@ public:
         eglWaitNative(EGL_CORE_NATIVE_ENGINE);
     }
 
+    void
+    recreate(void) {
+        EGLContext currentContext = eglGetCurrentContext();
+        EGLSurface currentDrawSurface = eglGetCurrentSurface(EGL_DRAW);
+        EGLSurface currentReadSurface = eglGetCurrentSurface(EGL_DRAW);
+        bool rebindDrawSurface = currentDrawSurface == surface;
+        bool rebindReadSurface = currentReadSurface == surface;
+
+        if (rebindDrawSurface || rebindReadSurface) {
+            eglMakeCurrent(eglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
+        }
+
+        eglDestroySurface(eglDisplay, surface);
+
+        EGLConfig config = static_cast<const EglVisual *>(visual)->config;
+        surface = eglCreateWindowSurface(eglDisplay, config, (EGLNativeWindowType)window, NULL);
+
+        if (rebindDrawSurface || rebindReadSurface) {
+            eglMakeCurrent(eglDisplay, surface, surface, currentContext);
+        }
+    }
+
     void
     resize(int w, int h) {
         if (w == width && h == height) {
@@ -182,6 +205,27 @@ public:
         waitForEvent(ConfigureNotify);
 
         eglWaitNative(EGL_CORE_NATIVE_ENGINE);
+
+        /*
+         * Some implementations won't update the backbuffer unless we recreate
+         * the EGL surface.
+         */
+
+        int eglWidth;
+        int eglHeight;
+
+        eglQuerySurface(eglDisplay, surface, EGL_WIDTH, &eglWidth);
+        eglQuerySurface(eglDisplay, surface, EGL_HEIGHT, &eglHeight);
+
+        if (eglWidth != width || eglHeight != height) {
+            recreate();
+
+            eglQuerySurface(eglDisplay, surface, EGL_WIDTH, &eglWidth);
+            eglQuerySurface(eglDisplay, surface, EGL_HEIGHT, &eglHeight);
+        }
+
+        assert(eglWidth == width);
+        assert(eglHeight == height);
     }
 
     void show(void) {
@@ -350,9 +394,9 @@ createVisual(bool doubleBuffer, Profile profile) {
 }
 
 Drawable *
-createDrawable(const Visual *visual, int width, int height)
+createDrawable(const Visual *visual, int width, int height, bool pbuffer)
 {
-    return new EglDrawable(visual, width, height);
+    return new EglDrawable(visual, width, height, pbuffer);
 }
 
 Context *