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* Now allocates enough memory for virtual screens.

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* Implemented untested B_MOVE_DISPLAY - note, the page_flip demo doesn't work
  yet (didn't investigate yet, though).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@17432 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2006-05-12 11:46:14 +00:00
parent 8aa56b078f
commit c8609aed8c
1 changed files with 16 additions and 3 deletions
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19
src/add-ons/accelerants/intel_extreme/mode.cpp
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@ -250,10 +250,10 @@ intel_set_display_mode(display_mode *mode)
intel_free_memory(gInfo->frame_buffer_handle);
uint32 offset;
if (intel_allocate_memory(bytesPerRow * current.timing.v_display,
if (intel_allocate_memory(bytesPerRow * current.virtual_height,
gInfo->frame_buffer_handle, offset) < B_OK) {
// oh, how did that happen? Unfortunately, there is no really good way back
if (intel_allocate_memory(gInfo->shared_info->current_mode.timing.v_display
if (intel_allocate_memory(gInfo->shared_info->current_mode.virtual_height
* gInfo->shared_info->bytes_per_row, gInfo->frame_buffer_handle,
offset) == B_OK) {
gInfo->shared_info->frame_buffer_offset = offset;
@ -379,7 +379,20 @@ status_t
intel_move_display(uint16 horizontalStart, uint16 verticalStart)
{
TRACE(("intel_move_display()\n"));
return B_ERROR;
display_mode &mode = gInfo->shared_info->current_mode;
if (horizontalStart + mode.timing.h_display > mode.virtual_width
|| verticalStart + mode.timing.v_display > mode.virtual_height)
return B_BAD_VALUE;
mode.h_display_start = horizontalStart;
mode.v_display_start = verticalStart;
write32(INTEL_DISPLAY_BASE, gInfo->shared_info->frame_buffer_offset
+ verticalStart * gInfo->shared_info->bytes_per_row
+ horizontalStart * (gInfo->shared_info->bits_per_pixel + 7) / 8);
return B_OK;
}