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authorChia-I Wu <olv@lunarg.com>2010-04-06 13:24:24 +0800
committerChia-I Wu <olv@lunarg.com>2010-04-06 13:48:59 +0800
commit0942ed45b370addf4edb310d4d0f9cd0c7b18fd0 (patch)
treedc3d1331669d183f5356d259f7359ea39f47ce6c /progs
parentf51f62e8ed5227f410efa46337a95af25d7eb616 (diff)
progs/egl: Fix the blank window in pbuffer demo.
EGL requires eglSwapBuffers to be called on the current surface.
Diffstat (limited to 'progs')
-rw-r--r--progs/egl/opengles1/pbuffer.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/progs/egl/opengles1/pbuffer.c b/progs/egl/opengles1/pbuffer.c
index 011c2af58f..60f864445a 100644
--- a/progs/egl/opengles1/pbuffer.c
+++ b/progs/egl/opengles1/pbuffer.c
@@ -168,6 +168,8 @@ draw_both(EGLDisplay egl_dpy, EGLSurface egl_surf, EGLSurface egl_pbuf,
glReadPixels(0, 0, WinWidth, WinHeight, GL_RGBA, GL_UNSIGNED_BYTE, wbuf);
printf("Window[%d,%d] = 0x%08x\n", x, y, wbuf[y*WinWidth+x]);
+ eglSwapBuffers(egl_dpy, egl_surf);
+
/* then draw to pbuffer */
if (!eglMakeCurrent(egl_dpy, egl_pbuf, egl_pbuf, egl_ctx)) {
printf("Error: eglMakeCurrent(pbuffer) failed\n");
@@ -177,7 +179,6 @@ draw_both(EGLDisplay egl_dpy, EGLSurface egl_surf, EGLSurface egl_pbuf,
glReadPixels(0, 0, WinWidth, WinHeight, GL_RGBA, GL_UNSIGNED_BYTE, pbuf);
printf("Pbuffer[%d,%d] = 0x%08x\n", x, y, pbuf[y*WinWidth+x]);
- eglSwapBuffers(egl_dpy, egl_surf);
/* compare renderings */
for (dif = i = 0; i < WinWidth * WinHeight; i++) {