Aren/haiku
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* Rearranged EDID mode find process: in a first pass, we only accept hi- or

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true color resolutions, the second pass that also takes those into account
  will only be run if no mode could be found before.
* I hope this will improve Urias boot screen experience.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24609 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2008-03-27 13:48:39 +00:00
parent d0c63aafc2
commit cedc3f1eb8
1 changed files with 52 additions and 33 deletions
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85
src/system/boot/platform/bios_ia32/video.cpp
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@ -1,5 +1,5 @@
/*
* Copyright 2004-2007, Axel Dörfler, axeld@pinc-software.de.
* Copyright 2004-2008, Axel Dörfler, axeld@pinc-software.de.
* Distributed under the terms of the MIT License.
*/
@ -73,7 +73,8 @@ static void
add_video_mode(video_mode *videoMode)
{
video_mode *mode = NULL;
while ((mode = (video_mode *)list_get_next_item(&sModeList, mode)) != NULL) {
while ((mode = (video_mode *)list_get_next_item(&sModeList, mode))
!= NULL) {
int compare = compare_video_modes(videoMode, mode);
if (compare == 0) {
// mode already exists
@ -88,14 +89,16 @@ add_video_mode(video_mode *videoMode)
}
//! Finds a video mode with the given resolution, prefers 16 bit modes
//! Finds a video mode with the given resolution
static video_mode *
find_video_mode(int32 width, int32 height)
find_video_mode(int32 width, int32 height, bool allowPalette)
{
video_mode *found = NULL;
video_mode *mode = NULL;
while ((mode = (video_mode *)list_get_next_item(&sModeList, mode)) != NULL) {
if (mode->width == width && mode->height == height) {
while ((mode = (video_mode *)list_get_next_item(&sModeList, mode))
!= NULL) {
if (mode->width == width && mode->height == height
&& (mode->bits_per_pixel > 8 || allowPalette)) {
if (found == NULL || found->bits_per_pixel < mode->bits_per_pixel)
found = mode;
}
@ -109,7 +112,8 @@ static video_mode *
find_video_mode(int32 width, int32 height, int32 depth)
{
video_mode *mode = NULL;
while ((mode = (video_mode *)list_get_next_item(&sModeList, mode)) != NULL) {
while ((mode = (video_mode *)list_get_next_item(&sModeList, mode))
!= NULL) {
if (mode->width == width
&& mode->height == height
&& mode->bits_per_pixel == depth) {
@ -121,6 +125,44 @@ find_video_mode(int32 width, int32 height, int32 depth)
}
static video_mode *
find_edid_mode(edid1_info &info, bool allowPalette)
{
video_mode *mode = NULL;
// try detailed timing first
for (int32 i = 0; i < EDID1_NUM_DETAILED_MONITOR_DESC; i++) {
edid1_detailed_monitor &monitor = info.detailed_monitor[i];
if (monitor.monitor_desc_type == EDID1_IS_DETAILED_TIMING) {
mode = find_video_mode(monitor.data.detailed_timing.h_active,
monitor.data.detailed_timing.v_active, allowPalette);
if (mode != NULL)
return mode;
}
}
// try standard timings next
for (int32 i = 0; i < EDID1_NUM_STD_TIMING; i++) {
if (info.std_timing[i].h_size <= 256)
continue;
video_mode *found = find_video_mode(info.std_timing[i].h_size,
info.std_timing[i].v_size, allowPalette);
if (found != NULL) {
if (mode != NULL) {
// prefer higher resolutions
if (found->width > mode->width)
mode = found;
} else
mode = found;
}
}
return NULL;
}
static bool
get_mode_from_settings(void)
{
@ -860,32 +902,9 @@ platform_init_video(void)
if (vesa_get_edid(&info) == B_OK) {
// we got EDID information from the monitor, try to find a new default
// mode
video_mode *defaultMode = NULL;
// try detailed timing first
for (int32 i = 0; i < EDID1_NUM_DETAILED_MONITOR_DESC; i++) {
edid1_detailed_monitor &monitor = info.detailed_monitor[i];
if (monitor.monitor_desc_type == EDID1_IS_DETAILED_TIMING) {
defaultMode = find_video_mode(monitor.data.detailed_timing.h_active,
monitor.data.detailed_timing.v_active);
if (defaultMode != NULL)
break;
}
}
if (defaultMode == NULL) {
// try standard timings next
for (int32 i = 0; i < EDID1_NUM_STD_TIMING; i++) {
if (info.std_timing[i].h_size <= 256)
continue;
defaultMode = find_video_mode(info.std_timing[i].h_size,
info.std_timing[i].v_size);
if (defaultMode != NULL)
break;
}
}
video_mode *defaultMode = find_edid_mode(info, false);
if (defaultMode == NULL)
find_edid_mode(info, true);
if (defaultMode != NULL) {
// We found a new default mode to use!