Enlightenment CVS committal
Author : raster
Project : e17
Module : libs/evas
Dir : e17/libs/evas/src/modules/engines/gl_x11
Modified Files:
evas_engine.c
Log Message:
just look at the comments to know what this is about.
===================================================================
RCS file: /cvs/e/e17/libs/evas/src/modules/engines/gl_x11/evas_engine.c,v
retrieving revision 1.21
retrieving revision 1.22
diff -u -3 -r1.21 -r1.22
--- evas_engine.c 29 Dec 2006 03:32:46 -0000 1.21
+++ evas_engine.c 3 Mar 2007 16:05:15 -0000 1.22
@@ -194,6 +194,16 @@
// printf("GL: finish update cycle!\n");
}
+/* at least the nvidia drivers are so abysmal that copying from the backbuffer
+ * to the front using glCopyPixels() that you literally can WATCH it draw the
+ * pixels slowly across the screen with a window update taking multiple
+ * seconds - so workaround by doing a full buffer render as frankly GL isn't
+ * up to doing anything that isn't done by quake (etc.)
+ */
+#define SLOW_GL_COPY_RECT 1
+/* vsync games - not for now though */
+//#define VSYNC_TO_SCREEN 1
+
static void *
eng_output_redraws_next_update_get(void *data, int *x, int *y, int *w, int *h,
int *cx, int *cy, int *cw, int *ch)
{
@@ -207,6 +217,24 @@
return NULL;
}
// printf("GL: update....!\n");
+#ifdef SLOW_GL_COPY_RECT
+ /* if any update - just return the whole canvas - works with swap
+ * buffers then */
+ if (x) *x = 0;
+ if (y) *y = 0;
+ if (w) *w = re->win->w;
+ if (h) *h = re->win->h;
+ if (cx) *cx = 0;
+ if (cy) *cy = 0;
+ if (cw) *cw = re->win->w;
+ if (ch) *ch = re->win->h;
+#else
+ /* 1 update - INCREDIBLY SLOW if combined with swap_rect in flush. a gl
+ * problem where there just is no hardware path for somethnig that
+ * obviously SHOULD be there */
+ /* only 1 update to minimise gl context games and rendering multiple update
+ * regions as evas does with other engines
+ */
if (x) *x = re->win->draw.x1;
if (y) *y = re->win->draw.y1;
if (w) *w = re->win->draw.x2 - re->win->draw.x1 + 1;
@@ -215,6 +243,7 @@
if (cy) *cy = re->win->draw.y1;
if (cw) *cw = re->win->draw.x2 - re->win->draw.x1 + 1;
if (ch) *ch = re->win->draw.y2 - re->win->draw.y1 + 1;
+#endif
return re;
}
@@ -238,14 +267,7 @@
// printf("GL: flush your mush!\n");
eng_window_use(re->win);
-/* SLOW AS ALL HELL! */
-#if 0
- evas_gl_common_swap_rect(re->win->gl_context,
- re->win->draw.x1, re->win->draw.y1,
- re->win->draw.x2 - re->win->draw.x1 + 1,
- re->win->draw.y2 - re->win->draw.y1 + 1);
-#else
-#if 0
+#ifdef VSYNC_TO_SCREEN
glFlush();
{
unsigned int rc;
@@ -254,7 +276,14 @@
glXWaitVideoSyncSGI(2, (rc + 1) % 2, &rc);
}
#endif
+#ifdef SLOW_GL_COPY_RECT
glXSwapBuffers(re->win->disp, re->win->win);
+#else
+ /* SLOW AS ALL HELL! */
+ evas_gl_common_swap_rect(re->win->gl_context,
+ re->win->draw.x1, re->win->draw.y1,
+ re->win->draw.x2 - re->win->draw.x1 + 1,
+ re->win->draw.y2 - re->win->draw.y1 + 1);
#endif
// glFlush();
// glXWaitGL();
-------------------------------------------------------------------------
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