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authorBrian Paul <brian.paul@tungstengraphics.com>2005-11-29 03:00:02 +0000
committerBrian Paul <brian.paul@tungstengraphics.com>2005-11-29 03:00:02 +0000
commit4683e8e95447f0b10d59099d6c578126a4212757 (patch)
tree0fa53987ecb14badb57aab5cdf69e713f951df58 /src/egl/drivers/dri/egldri.c
parent2b8e66d210c333c1f9bdb4e2de079798f1c810f1 (diff)
apparently need to load colormap after setting the mode to make it work reliably
Diffstat (limited to 'src/egl/drivers/dri/egldri.c')
-rw-r--r--src/egl/drivers/dri/egldri.c75
1 files changed, 50 insertions, 25 deletions
diff --git a/src/egl/drivers/dri/egldri.c b/src/egl/drivers/dri/egldri.c
index a84611535a..8be48d03d4 100644
--- a/src/egl/drivers/dri/egldri.c
+++ b/src/egl/drivers/dri/egldri.c
@@ -306,6 +306,42 @@ _eglDRICreateScreenSurfaceMESA(_EGLDriver *drv, EGLDisplay dpy, EGLConfig cfg,
/**
+ * Set the fbdev colormap to a simple linear ramp.
+ */
+static void
+_eglDRILoadColormap(driScreen *scrn)
+{
+ char path[ NAME_MAX ];
+ char *buffer;
+ int i, fd;
+
+ /* cmap attribute uses 256 lines of 16 bytes.
+ * Allocate one extra char for the \0 added by sprintf()
+ */
+ if ( !( buffer = malloc( 256 * 16 + 1 ) ) ) {
+ _eglLog(_EGL_WARNING, "Out of memory in _eglDRILoadColormap");
+ return;
+ }
+
+ /* cmap attribute uses 256 lines of 16 bytes */
+ for ( i = 0; i < 256; i++ ) {
+ int c = (i << 8) | i; /* expand to 16-bit value */
+ sprintf(&buffer[i * 16], "%02x%c%04x%04x%04x\n", i, ' ', c, c, c);
+ }
+
+ snprintf(path, sizeof(path), "%s/graphics/%s/color_map", sysfs, scrn->fb);
+ if ( !( fd = open( path, O_RDWR ) ) ) {
+ _eglLog(_EGL_WARNING, "Unable to open %s to set colormap", path);
+ return;
+ }
+ write( fd, buffer, 256 * 16 );
+ close( fd );
+
+ free( buffer );
+}
+
+
+/**
* Show the given surface on the named screen.
* If surface is EGL_NO_SURFACE, disable the screen's output.
* Called via eglShowSurfaceMESA().
@@ -322,6 +358,8 @@ _eglDRIShowSurfaceMESA(_EGLDriver *drv, EGLDisplay dpy, EGLScreenMESA screen,
char fname[NAME_MAX], buffer[1000];
int temp;
+ _eglLog(_EGL_DEBUG, "Enter _eglDRIShowSurface");
+
/* This will check that surface, screen, and mode are valid.
* Also, it checks that the surface is large enough for the mode, etc.
*/
@@ -442,6 +480,9 @@ _eglDRIShowSurfaceMESA(_EGLDriver *drv, EGLDisplay dpy, EGLScreenMESA screen,
*/
}
+ /* This used to be done in the _eglDRICreateScreens routine. */
+ _eglDRILoadColormap(scrn);
+
return EGL_TRUE;
}
@@ -536,14 +577,17 @@ _eglDRIGetDisplayInfo(driDisplay *dpy)
break;
if ( type == DRM_SHM ) {
if ( drmMap( dpy->drmFD, offset, size, ( drmAddressPtr ) ( &dpy->pSAREA ) ) < 0 ) {
- _eglLog(_EGL_WARNING, "drmMap failed.");
- return 0;
+ _eglLog(_EGL_WARNING, "drmMap DRM_SHM failed.");
+ return EGL_FALSE;
}
break;
}
}
- if ( !dpy->pSAREA )
+ if ( !dpy->pSAREA ) {
+ /* if this happens, make sure you're using the most recent DRM modules */
+ _eglLog(_EGL_WARNING, "Unable to map SAREA");
return 0;
+ }
memset( dpy->pSAREA, 0, dpy->SAREASize );
@@ -1008,29 +1052,10 @@ _eglDRICreateScreens(driDisplay *dpy)
fclose( file );
/*
- * Initialize the colormap. XXX is this per-screen?
+ * NOTE: we used to set the colormap here, but that didn't work reliably.
+ * Some entries near the start of the table would get corrupted by later
+ * mode changes.
*/
- {
- char *buffer;
- int i, fd;
-
- /* cmap attribute uses 256 lines of 16 bytes */
- if ( !( buffer = malloc( 256 * 16 ) ) )
- return EGL_FALSE;
-
- /* cmap attribute uses 256 lines of 16 bytes */
- for ( i = 0; i < 256; i++ )
- sprintf( &buffer[ i * 16 ], "%02x%c%4x%4x%4x\n",
- i, ' ', 256 * i, 256 * i, 256 * i );
-
- snprintf(path, sizeof(path), "%s/graphics/%s/color_map", sysfs,s->fb);
- if ( !( fd = open( path, O_RDWR ) ) )
- return EGL_FALSE;
- write( fd, buffer, 256 * 16 );
- close( fd );
-
- free( buffer );
- }
}
return EGL_TRUE;