CTM values are defined as signed-magnitude values. Add
a helper that converts from CTM signed-magnitude fixed
point value to the twos-complement value used by
drm_fixed.
Signed-off-by: Harry Wentland
---
include/drm/drm_fixed.h | 18 ++
1 file changed, 18 insertions(+)
diff --gi
fixp2int always rounds down, fixp2int_ceil rounds up. We need
the new fixp2int_round.
Signed-off-by: Harry Wentland
---
drivers/gpu/drm/vkms/vkms_composer.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/vkms/vkms_composer.c
b/drivers/gpu/drm/vkms/vkms_compo
This is an RFC set for a color pipeline API, along with implementations
in VKMS and amdgpu. It is tested with a set of IGT tests that can be
found at [1]. The IGT tests run a pixel-by-pixel comparison with an
allowable delta variation as the goal for these transformations is
perceptual correctness,
v5:
- Drop unused header definitions
v3:
- Read NEXT ID from drm_colorop's next pointer
Signed-off-by: Harry Wentland
---
drivers/gpu/drm/drm_atomic.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index d333433319f6..9919a6f109
Signed-off-by: Harry Wentland
---
Documentation/gpu/drm-kms.rst | 15 +++
drivers/gpu/drm/drm_colorop.c | 31 +++
2 files changed, 46 insertions(+)
diff --git a/Documentation/gpu/drm-kms.rst b/Documentation/gpu/drm-kms.rst
index abfe220764e1..2292e65f044c
Debugging LUT math is much easier when we can unit test
it. Add kunit functionality to VKMS and add tests for
- get_lut_index
- lerp_u16
v5:
- Bring back static for lerp_u16 and get_lut_index (Arthur)
v4:
- Test the critical points of the lerp function (Pekka)
v3:
- Use include way of testi
Signed-off-by: Harry Wentland
---
drivers/gpu/drm/drm_atomic.c | 25 -
1 file changed, 24 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index b09db9835e1f..096460d38545 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b
v5:
- Don't require BYPASS to succeed (Sebastian)
- use DATA for 1D and 3D LUT types (Sebastian)
- update 3DLUT ops to use 3DLUT_MODES and 3DLUT_MODE_INDEX
- Add section on drm_colorop extensibility
- Add color_pipeline.rst to RFC toc tree
v4:
- Drop IOCTL docs since we dropped the IOCTLs (P
v5:
- Add drm_get_colorop_curve_1d_type_name in header
- Add drm_colorop_init
- Set default curve
- Add kernel docs
v4:
- Use drm_colorop_curve_1d_type_enum_list to get name (Pekka)
- Create separate init function for 1D curve
- Pass supported TFs into 1D curve init function
Signed-off-by:
This patches introduces a new drm_colorop mode object. This
object represents color transformations and can be used to
define color pipelines.
We also introduce the drm_colorop_state here, as well as
various helpers and state tracking bits.
v5:
- Add comment to drm_atomic_state.colorops
- Repla
We want to be able to bypass each colorop at all times.
Introduce a new BYPASS boolean property for this.
v5:
- Drop TODO
Signed-off-by: Harry Wentland
---
drivers/gpu/drm/drm_atomic_uapi.c | 6 +-
drivers/gpu/drm/drm_colorop.c | 15 +++
include/drm/drm_colorop.h |
Add a read-only TYPE property. The TYPE specifies the colorop
type, such as enumerated curve, 1D LUT, CTM, 3D LUT, PWL LUT,
etc.
v5:
- Add drm_get_colorop_type_name in header
- Add kernel docs
v4:
- Use enum property for TYPE (Pekka)
v3:
- Make TYPE a range property
- Move enum drm_colorop_
With the introduction of the pre-blending color pipeline we
can no longer have color operations that don't have a clear
position in the color pipeline. We deprecate all existing
plane properties. For upstream drivers those are:
- COLOR_ENCODING
- COLOR_RANGE
Drivers are expected to ignore these
We'll construct color pipelines out of drm_colorop by
chaining them via the NEXT pointer. NEXT will point to
the next drm_colorop in the pipeline, or by 0 if we're
at the end of the pipeline.
v5:
- move next comment here from Add 3x4 CTM patch (Sebastian)
- Add kernel doc
v4:
- Allow setting o
We add two 3x4 matrices into the VKMS color pipeline. The reason
we're adding matrices is so that we can test that application
of a matrix and its inverse yields an output equal to the input
image.
One complication with the matrix implementation has to do with
the fact that the matrix entries are
A whole slew of tests for CTM handling that greatly helped in
debugging the CTM code. The extent of tests might seem a bit
silly but they're fast and might someday help save someone
else's day when debugging this.
v5:
- Make apply_3x4_matrix static
v4:
- Comment on origin of bt709_enc matrix (P
Certain operations require us to preserve values below 0.0 and
above 1.0 (0x0 and 0x respectively in 16 bpc unorm). One
such operation is a BT709 encoding operation followed by its
decoding operation, or the reverse.
We'll use s32 values as intermediate in and outputs of our
color operations,
Drivers will need to know whether an atomic check/commit
originated from a client with DRM_CLIENT_CAP_PLANE_COLOR_PIPELINE
so they can ignore deprecated properties, like COLOR_ENCODING
and COLOR_RANGE.
Pass the plane_color_pipeline bit to drm_atomic_state.
v5:
- Fix kernel docs
Signed-off-by: H
This patch introduces a VKMS color pipeline that includes two
drm_colorops for named transfer functions. For now the only ones
supported are sRGB EOTF, sRGB Inverse EOTF, and a Linear TF.
We will expand this in the future but I don't want to do so
without accompanying IGT tests.
We introduce a new
Signed-off-by: Harry Wentland
---
drivers/gpu/drm/vkms/tests/vkms_color_tests.c | 37 ++-
1 file changed, 36 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/vkms/tests/vkms_color_tests.c
b/drivers/gpu/drm/vkms/tests/vkms_color_tests.c
index fc73e48aa57c..e6ac01dee830 1
This type is used to support a 3x4 matrix in colorops. A 3x4
matrix uses the last column as a "bias" column. Some HW exposes
support for 3x4. The calculation looks like:
out matrixin
|R| |0 1 2 3 | | R |
|G| = |4 5 6 7 | x | G |
|B| |8 9 10 11| | B |
From: Alex Hung
Signed-off-by: Alex Hung
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c
index d260db42d407..8fc0
While working on the CTM implementation of VKMS I had to ascertain
myself of a few assumptions. One of those is whether drm_fixed.h
treats its numbers using signed-magnitude or twos-complement. It is
twos-complement.
In order to make someone else's day easier I am adding the
drm_test_int2fixp test
The PQ function defines a mapping of code values to nits (cd/m^2).
The max code value maps to 10,000 nits.
Windows DWM's canonical composition color space (CCCS) defaults
to composing SDR contents to 80 nits and uses a float value of
1.0 to represent this. For this reason AMD HW hard-codes a PQ
f
From: Alex Hung
Create a new macro for_each_new_colorop_in_state to access new
drm_colorop_state updated from uapi.
Signed-off-by: Alex Hung
---
include/drm/drm_atomic.h | 20
1 file changed, 20 insertions(+)
diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.
We're adding a new enum COLOR PIPELINE property. This
property will have entries for each COLOR PIPELINE by
referencing the DRM object ID of the first drm_colorop
of the pipeline. 0 disables the entire COLOR PIPELINE.
Userspace can use this to discover the available color
pipelines, as well as set
From: Alex Hung
Expose a 3rd 1D curve colorop, with support for
DRM_COLOROP_1D_CURVE_SRGB_EOTF and program the BLND block
to perform the sRGB transform when the colorop is not in
bypass
With this change the following IGT test passes:
kms_colorop --run plane-XR30-XR30-srgb_eotf-srgb_inv_eotf-srgb
From: Alex Hung
Expose a 2nd curve colorop with support for
DRM_COLOROP_1D_CURVE_SRGB_INV_EOTF and program HW to
perform the sRGB Inverse EOTF on the shaper block
when the colorop is not in bypass.
With this change the follow IGT tests pass:
kms_colorop --run plane-XR30-XR30-srgb_inv_eotf
kms_co
When the plane_color_pipeline bit is set we should ignore
deprecated properties, such as COLOR_RANGE and COLOR_ENCODING.
Signed-off-by: Harry Wentland
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 4
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_
The BT.709 and BT.2020 OETFs are the same, the only difference
being that the BT.2020 variant is defined with more precision
for 10 and 12-bit per color encodings.
Both are used as encoding functions for video content, and are
therefore defined as OETF (opto-electronic transfer function)
instead o
From: Alex Hung
Expose one 1D curve colorop with support for
DRM_COLOROP_1D_CURVE_SRGB_EOTF and program HW to perform
the sRGB transform when the colorop is not in bypass.
With this change the following IGT test passes:
kms_colorop --run plane-XR30-XR30-srgb_eotf
The color pipeline now consists
This adds support for the BT.709/BT.2020 transfer functions
on all current 1D curve plane colorops, i.e., on DEGAM, SHAPER,
and BLND blocks.
With this change the following IGT subtests pass:
kms_colorop --run plane-XR30-XR30-bt2020_inv_oetf
kms_colorop --run plane-XR30-XR30-bt2020_oetf
Signed-off
This patchset enables support for the PQ_125 EOTF and its inverse
on all existing plane 1D curve colorops, i.e., on DEGAM, SHAPER,
and BLND blocks.
With this patchset the following IGT subtests are passing:
kms_colorop --run plane-XR30-XR30-pq_125_eotf
kms_colorop --run plane-XR30-XR30-pq_125_inv_
We want to make sure userspace is aware of the 1D LUT
interpolation. While linear interpolation is common it
might not be supported on all HW. Give driver implementers
a way to specify their interpolation.
Signed-off-by: Harry Wentland
---
.../amd/display/amdgpu_dm/amdgpu_dm_colorop.c | 6 ++--
From: Alex Hung
This patch adds colorops for custom 1D LUTs in the SHAPER and
BLND HW blocks.
With this change the following IGT tests pass:
kms_colorop --run plane-XR30-XR30-srgb_inv_eotf_lut
kms_colorop --run plane-XR30-XR30-srgb_inv_eotf_lut-srgb_eotf_lut
The color pipeline now consists of t
Add the default Bypass pipeline and ensure it passes the
kms_colorop test plane-XR30-XR30-bypass.
Signed-off-by: Harry Wentland
---
.../amd/display/amdgpu_dm/amdgpu_dm_plane.c | 19 +++
1 file changed, 19 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_
From: Alex Hung
We've previously introduced DRM_COLOROP_1D_CURVE for
pre-defined 1D curves. But we also have HW that supports
custom curves and userspace needs the ability to pass
custom curves, aka LUTs.
This patch introduces a new colorop type, called
DRM_COLOROP_1D_LUT that provides a SIZE pr
Not all HW will be able to do bypass on all color
operations. Introduce an 'allow_bypass' boolean for
all colorop init functions and only create the BYPASS
property when it's true.
Signed-off-by: Harry Wentland
---
.../amd/display/amdgpu_dm/amdgpu_dm_colorop.c | 22 +---
drivers/gpu/drm/drm_
A short description about the AMD color pipeline.
Signed-off-by: Harry Wentland
---
.../amd/display/amdgpu_dm/amdgpu_dm_color.c | 122 +++---
1 file changed, 102 insertions(+), 20 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_color.c
b/drivers/gpu/drm/
From: Alex Hung
This introduces a new drm_colorop_type: DRM_COLOROP_MULTIPLIER.
It's a simple multiplier to all pixel values. The value is
specified via a S31.32 fixed point provided via the
"MULTIPLIER" property.
v5:
- Fix atomic state print
- Add kernel doc
Signed-off-by: Alex Hung
---
d
From: Alex Hung
Swap the order of matrix and multiplier as designed in hardware.
Signed-off-by: Alex Hung
---
.../amd/display/amdgpu_dm/amdgpu_dm_color.c | 22 +++---
.../amd/display/amdgpu_dm/amdgpu_dm_colorop.c | 30 +--
2 files changed, 26 insertions(+), 26 deletio
From: Alex Hung
This adds support for a 3D LUT.
The color pipeline now consists of the following colorops:
1. 1D curve colorop
2. Multiplier
3. 3x4 CTM
4. 1D curve colorop
5. 1D LUT
6. 3D LUT
7. 1D curve colorop
8. 1D LUT
Signed-off-by: Alex Hung
---
.../amd/display/amdgpu_dm/amdgpu_dm_color.
From: Alex Hung
This adds support for a 3x4 color transformation matrix.
With this change the following IGT tests pass:
kms_colorop --run plane-XR30-XR30-ctm_3x4_50_desat
kms_colorop --run plane-XR30-XR30-ctm_3x4_overdrive
kms_colorop --run plane-XR30-XR30-ctm_3x4_oversaturate
kms_colorop --run
From: Alex Hung
This adds support for a multiplier. This multiplier is
programmed via the HDR Multiplier in DCN.
With this change the following IGT tests pass:
kms_colorop --run plane-XR30-XR30-multiply_125
kms_colorop --run plane-XR30-XR30-multiply_inv_125
The color pipeline now consists of th
From: Alex Hung
It is to be used to enable HDR by allowing userpace to create and pass
3D LUTs to kernel and hardware.
1. new drm_colorop_type: DRM_COLOROP_3D_LUT.
2. 3D LUT modes define hardware capabilities to userspace applications.
3. mode index points to current 3D LUT mode in lut_3d_modes.
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