All of lore.kernel.org
 help / color / mirror / Atom feed
* [igt-dev] [PATCH] lib/igt_fb: Support Tile Size for AMD non linear modifiers.
@ 2021-04-13 16:02 Mark Yacoub
  2021-04-13 16:43 ` [igt-dev] ✓ Fi.CI.BAT: success for " Patchwork
                   ` (2 more replies)
  0 siblings, 3 replies; 7+ messages in thread
From: Mark Yacoub @ 2021-04-13 16:02 UTC (permalink / raw)
  To: igt-dev; +Cc: petri.latvala, bas, seanpaul, markyacoub, Mark Yacoub

From: Mark Yacoub <markyacoub@google.com>

Calculate the width and height of the tile on amdgpu when the modifier
is not linear.

Cc: bas@basnieuwenhuizen.nl
Cc: daniel.vetter@ffwll.ch
Signed-off-by: markyacoub@chromium.org
---
 lib/igt_fb.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/lib/igt_fb.c b/lib/igt_fb.c
index 4ded7e78..3d1fdae5 100644
--- a/lib/igt_fb.c
+++ b/lib/igt_fb.c
@@ -396,6 +396,19 @@ void igt_get_fb_tile_size(int fd, uint64_t modifier, int fb_bpp,
 		vc4_modifier_param = fourcc_mod_broadcom_param(modifier);
 		modifier = fourcc_mod_broadcom_mod(modifier);
 	}
+	// For all non-linear modifiers, AMD uses 64 KiB tiles
+	else if (IS_AMD_FMT_MOD(modifier)) {
+		igt_require_amdgpu(fd);
+		const int bytes_per_pixel = fb_bpp / 8;
+		const int format_log2 = log2(bytes_per_pixel);
+		const int pixel_log2 = log2(64 * 1024) - format_log2;
+		const int width_log2 = (pixel_log2 + 1) / 2;
+		const int height_log2 = pixel_log2 - width_log2;
+
+		*width_ret = 1 << width_log2;
+		*height_ret = 1 << height_log2;
+		return;
+	}
 
 	switch (modifier) {
 	case LOCAL_DRM_FORMAT_MOD_NONE:
-- 
2.31.1.295.g9ea45b61b8-goog

_______________________________________________
igt-dev mailing list
igt-dev@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/igt-dev

^ permalink raw reply related	[flat|nested] 7+ messages in thread

end of thread, other threads:[~2021-06-21 15:43 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-04-13 16:02 [igt-dev] [PATCH] lib/igt_fb: Support Tile Size for AMD non linear modifiers Mark Yacoub
2021-04-13 16:43 ` [igt-dev] ✓ Fi.CI.BAT: success for " Patchwork
2021-04-13 17:41 ` [igt-dev] ✓ Fi.CI.IGT: " Patchwork
2021-06-07 16:13 ` [igt-dev] [PATCH] " Mark Yacoub
2021-06-17 23:45   ` Bas Nieuwenhuizen
2021-06-18 10:40     ` Bas Nieuwenhuizen
2021-06-21 15:43       ` Mark Yacoub

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.