enlightenment/efl
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efl
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just look at the comments to know what this is about. 

SVN revision: 28545
This commit is contained in:
Carsten Haitzler 2007-03-03 16:05:15 +00:00
parent 921304555c
commit 188eb8931d
1 changed files with 37 additions and 8 deletions
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45
legacy/evas/src/modules/engines/gl_x11/evas_engine.c
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@ -194,6 +194,16 @@ eng_output_redraws_clear(void *data)
// 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 @@ eng_output_redraws_next_update_get(void *data, int *x, int *y, int *w, int *h, i
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 @@ eng_output_redraws_next_update_get(void *data, int *x, int *y, int *w, int *h, i
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 @@ eng_output_flush(void *data)
// 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 @@ eng_output_flush(void *data)
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();