Module: Mesa Branch: main Commit: a2797674241c1be0130e7e187f0148a792e02b56 URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=a2797674241c1be0130e7e187f0148a792e02b56
Author: Rhys Perry <[email protected]> Date: Tue Nov 7 15:59:39 2023 +0000 ac/gpu_info: update conformant_trunc_coord comment Signed-off-by: Rhys Perry <[email protected]> Reviewed-by: Samuel Pitoiset <[email protected]> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25911> --- src/amd/common/ac_gpu_info.h | 20 +++++++++++++------- 1 file changed, 13 insertions(+), 7 deletions(-) diff --git a/src/amd/common/ac_gpu_info.h b/src/amd/common/ac_gpu_info.h index 80ef7ac1e7a..2303c06be21 100644 --- a/src/amd/common/ac_gpu_info.h +++ b/src/amd/common/ac_gpu_info.h @@ -121,14 +121,20 @@ struct radeon_info { /* conformant_trunc_coord is equal to TA_CNTL2.TRUNCATE_COORD_MODE, which exists since gfx11. * * If TA_CNTL2.TRUNCATE_COORD_MODE == 0, coordinate truncation is the same as gfx10 and older. - * If TA_CNTL2.TRUNCATE_COORD_MODE == 1, coordinate truncation is adjusted to be conformant - * if you also set TRUNC_COORD. * - * Behavior: - * truncate_coord_xy = TRUNC_COORD && - * ((xy_filter == Point && !gather) || !TA_CNTL2.TRUNCATE_COORD_MODE); - * truncate_coord_z = TRUNC_COORD && (z_filter == Point || !TA_CNTL2.TRUNCATE_COORD_MODE); - * truncate_coord_layer = TRUNC_COORD && !TA_CNTL2.TRUNCATE_COORD_MODE; + * If TA_CNTL2.TRUNCATE_COORD_MODE == 1, coordinate truncation is adjusted to be D3D9/GL/Vulkan + * conformant if you also set TRUNC_COORD. Coordinate truncation uses D3D10+ behaviour if + * TRUNC_COORD is unset. + * + * Behavior if TA_CNTL2.TRUNCATE_COORD_MODE == 1: + * truncate_coord_xy = TRUNC_COORD && (xy_filter == Point && !gather); + * truncate_coord_z = TRUNC_COORD && (z_filter == Point); + * truncate_coord_layer = false; + * + * Behavior if TA_CNTL2.TRUNCATE_COORD_MODE == 0: + * truncate_coord_xy = TRUNC_COORD; + * truncate_coord_z = TRUNC_COORD; + * truncate_coord_layer = TRUNC_COORD; * * AnisoPoint is treated as Point. */
