On Tue, 25 Jul 2017 09:27:33 -0700 Eric Anholt <e...@anholt.net> wrote:
> 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. > > Signed-off-by: Eric Anholt <e...@anholt.net> > --- > > The work-in-progress userspace is at: > > https://github.com/anholt/xserver/commits/glamor-draw-bounds-overlap > https://github.com/anholt/mesa/commits/vc4-overlapping-blit > > and the next step is to build the GL extension spec and piglit tests > for it. > > drivers/gpu/drm/vc4/vc4_drv.c | 1 + > drivers/gpu/drm/vc4/vc4_gem.c | 5 ++++- > drivers/gpu/drm/vc4/vc4_render_cl.c | 21 ++++++++++++++++----- > include/uapi/drm/vc4_drm.h | 11 +++++++++++ > 4 files changed, 32 insertions(+), 6 deletions(-) > > diff --git a/drivers/gpu/drm/vc4/vc4_drv.c b/drivers/gpu/drm/vc4/vc4_drv.c > index c6b487c3d2b7..b5c2c28289ed 100644 > --- a/drivers/gpu/drm/vc4/vc4_drv.c > +++ b/drivers/gpu/drm/vc4/vc4_drv.c > @@ -99,6 +99,7 @@ static int vc4_get_param_ioctl(struct drm_device *dev, void > *data, > case DRM_VC4_PARAM_SUPPORTS_BRANCHES: > case DRM_VC4_PARAM_SUPPORTS_ETC1: > case DRM_VC4_PARAM_SUPPORTS_THREADED_FS: > + case DRM_VC4_PARAM_SUPPORTS_FIXED_RCL_ORDER: > args->value = true; > break; > default: > diff --git a/drivers/gpu/drm/vc4/vc4_gem.c b/drivers/gpu/drm/vc4/vc4_gem.c > index a3e45e67f417..ba0782ebda34 100644 > --- a/drivers/gpu/drm/vc4/vc4_gem.c > +++ b/drivers/gpu/drm/vc4/vc4_gem.c > @@ -1008,7 +1008,10 @@ vc4_submit_cl_ioctl(struct drm_device *dev, void *data, > struct ww_acquire_ctx acquire_ctx; > int ret = 0; > > - if ((args->flags & ~VC4_SUBMIT_CL_USE_CLEAR_COLOR) != 0) { > + if ((args->flags & ~(VC4_SUBMIT_CL_USE_CLEAR_COLOR | > + VC4_SUBMIT_CL_FIXED_RCL_ORDER | > + VC4_SUBMIT_CL_RCL_ORDER_INCREASING_X | > + VC4_SUBMIT_CL_RCL_ORDER_INCREASING_Y)) != 0) { > DRM_DEBUG("Unknown flags: 0x%02x\n", args->flags); > return -EINVAL; > } > diff --git a/drivers/gpu/drm/vc4/vc4_render_cl.c > b/drivers/gpu/drm/vc4/vc4_render_cl.c > index da3bfd53f0bd..c3b064052147 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 = false; > + bool positive_y = false; > + > + if (args->flags & VC4_SUBMIT_CL_FIXED_RCL_ORDER) { > + if (args->flags & VC4_SUBMIT_CL_RCL_ORDER_INCREASING_X) > + positive_x = true; > + if (args->flags & VC4_SUBMIT_CL_RCL_ORDER_INCREASING_Y) > + positive_y = true; > + } Are you sure you want the default value of positive_x/y to be false? It seems to me that before this patch you were always iterating in ascending order, but now, when VC4_SUBMIT_CL_FIXED_RCL_ORDER is not set you do the opposite. Maybe you really want to change the default behavior, just wanted to point this out. Otherwise, Reviewed-by: Boris Brezillon <boris.brezil...@free-electrons.com> > > 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); > } > diff --git a/include/uapi/drm/vc4_drm.h b/include/uapi/drm/vc4_drm.h > index 6ac4c5c014cb..a8bf9a76d5b6 100644 > --- a/include/uapi/drm/vc4_drm.h > +++ b/include/uapi/drm/vc4_drm.h > @@ -153,6 +153,16 @@ struct drm_vc4_submit_cl { > __u32 pad:24; > > #define VC4_SUBMIT_CL_USE_CLEAR_COLOR (1 << 0) > +/* By default, the kernel gets to choose the order that the tiles are > + * rendered in. If this is set, then the tiles will be rendered in a > + * raster order, with the right-to-left vs left-to-right and > + * top-to-bottom vs bottom-to-top dictated by > + * VC4_SUBMIT_CL_RCL_ORDER_INCREASING_*. This allows overlapping > + * blits to be implemented using the 3D engine. > + */ > +#define VC4_SUBMIT_CL_FIXED_RCL_ORDER (1 << 1) > +#define VC4_SUBMIT_CL_RCL_ORDER_INCREASING_X (1 << 2) > +#define VC4_SUBMIT_CL_RCL_ORDER_INCREASING_Y (1 << 3) > __u32 flags; > > /* Returned value of the seqno of this render job (for the > @@ -292,6 +302,7 @@ struct drm_vc4_get_hang_state { > #define DRM_VC4_PARAM_SUPPORTS_BRANCHES 3 > #define DRM_VC4_PARAM_SUPPORTS_ETC1 4 > #define DRM_VC4_PARAM_SUPPORTS_THREADED_FS 5 > +#define DRM_VC4_PARAM_SUPPORTS_FIXED_RCL_ORDER 6 > > struct drm_vc4_get_param { > __u32 param; _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
