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drm: Use register writes instead of BITBLT_MULTI packets for buffer swap blits

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This takes up two more ring buffer entries per rectangle blitted but makes sure
the blit is performed top to bottom, reducing the likelyhood of tearing.

Signed-off-by: Dave Airlie <airlied@linux.ie>
This commit is contained in:
Michel Daenzer 2006-09-22 04:26:35 +10:00 committed by Dave Airlie
parent 54a56ac583
commit 3e14a2867d
2 changed files with 7 additions and 2 deletions
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3
drivers/char/drm/radeon_drv.h
View File

@ -425,6 +425,8 @@ extern int r300_do_cp_cmdbuf(drm_device_t * dev, DRMFILE filp,
#define RADEON_RB3D_COLOROFFSET 0x1c40
#define RADEON_RB3D_COLORPITCH 0x1c48
#define RADEON_SRC_X_Y 0x1590
#define RADEON_DP_GUI_MASTER_CNTL 0x146c
# define RADEON_GMC_SRC_PITCH_OFFSET_CNTL (1 << 0)
# define RADEON_GMC_DST_PITCH_OFFSET_CNTL (1 << 1)
@ -442,6 +444,7 @@ extern int r300_do_cp_cmdbuf(drm_device_t * dev, DRMFILE filp,
# define RADEON_ROP3_S 0x00cc0000
# define RADEON_ROP3_P 0x00f00000
#define RADEON_DP_WRITE_MASK 0x16cc
#define RADEON_SRC_PITCH_OFFSET 0x1428
#define RADEON_DST_PITCH_OFFSET 0x142c
#define RADEON_DST_PITCH_OFFSET_C 0x1c80
# define RADEON_DST_TILE_LINEAR (0 << 30)

6
drivers/char/drm/radeon_state.c
View File

@ -1269,9 +1269,9 @@ static void radeon_cp_dispatch_swap(drm_device_t * dev)
DRM_DEBUG("dispatch swap %d,%d-%d,%d\n", x, y, w, h);
BEGIN_RING(7);
BEGIN_RING(9);
OUT_RING(CP_PACKET3(RADEON_CNTL_BITBLT_MULTI, 5));
OUT_RING(CP_PACKET0(RADEON_DP_GUI_MASTER_CNTL, 0));
OUT_RING(RADEON_GMC_SRC_PITCH_OFFSET_CNTL |
RADEON_GMC_DST_PITCH_OFFSET_CNTL |
RADEON_GMC_BRUSH_NONE |
@ -1283,6 +1283,7 @@ static void radeon_cp_dispatch_swap(drm_device_t * dev)
/* Make this work even if front & back are flipped:
*/
OUT_RING(CP_PACKET0(RADEON_SRC_PITCH_OFFSET, 1));
if (dev_priv->current_page == 0) {
OUT_RING(dev_priv->back_pitch_offset);
OUT_RING(dev_priv->front_pitch_offset);
@ -1291,6 +1292,7 @@ static void radeon_cp_dispatch_swap(drm_device_t * dev)
OUT_RING(dev_priv->back_pitch_offset);
}
OUT_RING(CP_PACKET0(RADEON_SRC_X_Y, 2));
OUT_RING((x << 16) | y);
OUT_RING((x << 16) | y);
OUT_RING((w << 16) | h);