diff options
| author | Eric Anholt <eric@anholt.net> | 2017-07-25 19:27:33 +0300 |
|---|---|---|
| committer | Eric Anholt <eric@anholt.net> | 2017-08-08 23:26:44 +0300 |
| commit | 3be8eddd9d58a925b461b582fa5aa422a9c145ee (patch) | |
| tree | 163d10f1eff2b72853310e5a0d432ab1694801da /drivers/gpu/drm/vc4/vc4_render_cl.c | |
| parent | fb95992af1d779806da9a380b14f76ad13764c2f (diff) | |
| download | linux-3be8eddd9d58a925b461b582fa5aa422a9c145ee.tar.xz | |
drm/vc4: Add exec flags to allow forcing a specific X/Y tile walk order.
This is useful to allow GL to provide defined results for overlapping
glBlitFramebuffer, which X11 in turn uses to accelerate uncomposited
window movement without first blitting to a temporary. x11perf
-copywinwin100 goes from 1850/sec to 4850/sec.
v2: Default to the same behavior as before when the flags aren't
passed. (suggested by Boris)
Signed-off-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20170725162733.28007-2-eric@anholt.net
Reviewed-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Diffstat (limited to 'drivers/gpu/drm/vc4/vc4_render_cl.c')
| -rw-r--r-- | drivers/gpu/drm/vc4/vc4_render_cl.c | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/drivers/gpu/drm/vc4/vc4_render_cl.c b/drivers/gpu/drm/vc4/vc4_render_cl.c index e0539731130b..273984f71ae2 100644 --- a/drivers/gpu/drm/vc4/vc4_render_cl.c +++ b/drivers/gpu/drm/vc4/vc4_render_cl.c @@ -261,8 +261,17 @@ static int vc4_create_rcl_bo(struct drm_device *dev, struct vc4_exec_info *exec, uint8_t max_y_tile = args->max_y_tile; uint8_t xtiles = max_x_tile - min_x_tile + 1; uint8_t ytiles = max_y_tile - min_y_tile + 1; - uint8_t x, y; + uint8_t xi, yi; uint32_t size, loop_body_size; + bool positive_x = true; + bool positive_y = true; + + if (args->flags & VC4_SUBMIT_CL_FIXED_RCL_ORDER) { + if (!(args->flags & VC4_SUBMIT_CL_RCL_ORDER_INCREASING_X)) + positive_x = false; + if (!(args->flags & VC4_SUBMIT_CL_RCL_ORDER_INCREASING_Y)) + positive_y = false; + } size = VC4_PACKET_TILE_RENDERING_MODE_CONFIG_SIZE; loop_body_size = VC4_PACKET_TILE_COORDINATES_SIZE; @@ -354,10 +363,12 @@ static int vc4_create_rcl_bo(struct drm_device *dev, struct vc4_exec_info *exec, rcl_u16(setup, args->height); rcl_u16(setup, args->color_write.bits); - for (y = min_y_tile; y <= max_y_tile; y++) { - for (x = min_x_tile; x <= max_x_tile; x++) { - bool first = (x == min_x_tile && y == min_y_tile); - bool last = (x == max_x_tile && y == max_y_tile); + for (yi = 0; yi < ytiles; yi++) { + int y = positive_y ? min_y_tile + yi : max_y_tile - yi; + for (xi = 0; xi < xtiles; xi++) { + int x = positive_x ? min_x_tile + xi : max_x_tile - xi; + bool first = (xi == 0 && yi == 0); + bool last = (xi == xtiles - 1 && yi == ytiles - 1); emit_tile(exec, setup, x, y, first, last); } |