On 09/08, Harry Wentland wrote:
> Signed-off-by: Harry Wentland <harry.wentland at amd.com>
> Cc: Ville Syrjala <ville.syrjala at linux.intel.com>
> Cc: Pekka Paalanen <pekka.paalanen at collabora.com>
> Cc: Simon Ser <contact at emersion.fr>
> Cc: Harry Wentland <harry.wentland at amd.com>
> Cc: Melissa Wen <mwen at igalia.com>
> Cc: Jonas Ådahl <jadahl at redhat.com>
> Cc: Sebastian Wick <sebastian.wick at redhat.com>
> Cc: Shashank Sharma <shashank.sharma at amd.com>
> Cc: Alexander Goins <agoins at nvidia.com>
> Cc: Joshua Ashton <joshua at froggi.es>
> Cc: Michel Dänzer <mdaenzer at redhat.com>
> Cc: Aleix Pol <aleixpol at kde.org>
> Cc: Xaver Hugl <xaver.hugl at gmail.com>
> Cc: Victoria Brekenfeld <victoria at system76.com>
> Cc: Daniel Vetter <daniel at ffwll.ch>
> Cc: Uma Shankar <uma.shankar at intel.com>
> Cc: Naseer Ahmed <quic_naseer at quicinc.com>
> Cc: Christopher Braga <quic_cbraga at quicinc.com>
> ---
> drivers/gpu/drm/vkms/Makefile | 3 +-
> drivers/gpu/drm/vkms/vkms_colorop.c | 108 +++++++++
> drivers/gpu/drm/vkms/vkms_composer.c | 316 +++++++++++++++++++++++++++
> drivers/gpu/drm/vkms/vkms_drv.h | 4 +
> drivers/gpu/drm/vkms/vkms_plane.c | 2 +
> 5 files changed, 432 insertions(+), 1 deletion(-)
> create mode 100644 drivers/gpu/drm/vkms/vkms_colorop.c
>
> diff --git a/drivers/gpu/drm/vkms/Makefile b/drivers/gpu/drm/vkms/Makefile
> index 1b28a6a32948..bcf508873622 100644
> --- a/drivers/gpu/drm/vkms/Makefile
> +++ b/drivers/gpu/drm/vkms/Makefile
> @@ -6,6 +6,7 @@ vkms-y := \
> vkms_formats.o \
> vkms_crtc.o \
> vkms_composer.o \
> - vkms_writeback.o
> + vkms_writeback.o \
> + vkms_colorop.o
>
> obj-$(CONFIG_DRM_VKMS) += vkms.o
> diff --git a/drivers/gpu/drm/vkms/vkms_colorop.c b/drivers/gpu/drm/vkms/vkms_colorop.c
> new file mode 100644
> index 000000000000..b3da0705bca7
> --- /dev/null
> +++ b/drivers/gpu/drm/vkms/vkms_colorop.c
> @@ -0,0 +1,108 @@
> +/*
> + * Copyright (C) 2023 Advanced Micro Devices, Inc. All rights reserved.
> + *
> + * Permission is hereby granted, free of charge, to any person obtaining a
> + * copy of this software and associated documentation files (the "Software"),
> + * to deal in the Software without restriction, including without limitation
> + * the rights to use, copy, modify, merge, publish, distribute, sublicense,
> + * and/or sell copies of the Software, and to permit persons to whom the
> + * Software is furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice shall be included in
> + * all copies or substantial portions of the Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
> + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> + * OTHER DEALINGS IN THE SOFTWARE.
> + *
> + * Authors: AMD
> + *
> + */
> +
> +#include <linux/slab.h>
> +#include <drm/drm_colorop.h>
> +#include <drm/drm_print.h>
> +#include <drm/drm_property.h>
> +#include <drm/drm_plane.h>
> +
> +#define MAX_COLOR_PIPELINES 5
> +
> +const int vkms_initialize_tf_pipeline(struct drm_plane *plane, struct drm_prop_enum_list *list)
> +{
> +
> + struct drm_colorop *op, *prev_op;
> + struct drm_device *dev = plane->dev;
> + int ret;
> +
> + /* 1st op: 1d curve */
> + op = kzalloc(sizeof(struct drm_colorop), GFP_KERNEL);
> + if (!op) {
> + DRM_ERROR("KMS: Failed to allocate colorop\n");
> + return -ENOMEM;
> + }
> +
> + ret = drm_colorop_init(dev, op, plane, DRM_COLOROP_1D_CURVE);
> + if (ret)
> + return ret;
> +
> + list->type = op->base.id;
> + list->name = kasprintf(GFP_KERNEL, "Color Pipeline %d", op->base.id);
> +
> + prev_op = op;
> +
> + /* 2nd op: 1d curve */
> + op = kzalloc(sizeof(struct drm_colorop), GFP_KERNEL);
> + if (!op) {
> + DRM_ERROR("KMS: Failed to allocate colorop\n");
> + return -ENOMEM;
> + }
> +
> + ret = drm_colorop_init(dev, op, plane, DRM_COLOROP_1D_CURVE);
> + if (ret)
> + return ret;
> +
> + drm_colorop_set_next_property(prev_op, op);
> +
> + return 0;
> +}
> +
> +int vkms_initialize_colorops(struct drm_plane *plane)
> +{
> + struct drm_device *dev = plane->dev;
> + struct drm_property *prop;
> + struct drm_prop_enum_list pipelines[MAX_COLOR_PIPELINES];
> + int len = 0;
> + int ret;
> +
> + /* Add "Bypass" (i.e. NULL) pipeline */
> + pipelines[len].type = 0;
> + pipelines[len].name = "Bypass";
> + len++;
> +
> + /* Add pipeline consisting of transfer functions */
> + ret = vkms_initialize_tf_pipeline(plane, &(pipelines[len]));
> + if (ret)
> + return ret;
> + len++;
> +
> + /* Create COLOR_PIPELINE property and attach */
> + prop = drm_property_create_enum(dev, DRM_MODE_PROP_ATOMIC,
> + "COLOR_PIPELINE",
> + pipelines, len);
> + if (!prop)
> + return -ENOMEM;
> +
> + plane->color_pipeline_property = prop;
> +
> + drm_object_attach_property(&plane->base, prop, 0);
> +
> + /* TODO do we even need this? */
> + if (plane->state)
> + plane->state->color_pipeline = NULL;
> +
> + return 0;
> +}
> diff --git a/drivers/gpu/drm/vkms/vkms_composer.c b/drivers/gpu/drm/vkms/vkms_composer.c
> index f6c311e8a87c..92ab9c62a554 100644
> --- a/drivers/gpu/drm/vkms/vkms_composer.c
> +++ b/drivers/gpu/drm/vkms/vkms_composer.c
> @@ -12,6 +12,284 @@
>
> #include "vkms_drv.h"
>
> +#define LUT_SIZE 256
> +
> +struct drm_color_lut srgb_array[LUT_SIZE] = {
> + { 0x13, 0x13, 0x13, 0 },
> + { 0x27, 0x27, 0x27, 0 },
> + { 0x3b, 0x3b, 0x3b, 0 },
> + { 0x4f, 0x4f, 0x4f, 0 },
> + { 0x63, 0x63, 0x63, 0 },
> + { 0x76, 0x76, 0x76, 0 },
> + { 0x8a, 0x8a, 0x8a, 0 },
> + { 0x9e, 0x9e, 0x9e, 0 },
> + { 0xb2, 0xb2, 0xb2, 0 },
> + { 0xc6, 0xc6, 0xc6, 0 },
> + { 0xda, 0xda, 0xda, 0 },
> + { 0xef, 0xef, 0xef, 0 },
> + { 0x106, 0x106, 0x106, 0 },
> + { 0x11e, 0x11e, 0x11e, 0 },
> + { 0x137, 0x137, 0x137, 0 },
> + { 0x151, 0x151, 0x151, 0 },
> + { 0x16d, 0x16d, 0x16d, 0 },
> + { 0x18a, 0x18a, 0x18a, 0 },
> + { 0x1a8, 0x1a8, 0x1a8, 0 },
> + { 0x1c7, 0x1c7, 0x1c7, 0 },
> + { 0x1e8, 0x1e8, 0x1e8, 0 },
> + { 0x20a, 0x20a, 0x20a, 0 },
> + { 0x22e, 0x22e, 0x22e, 0 },
> + { 0x253, 0x253, 0x253, 0 },
> + { 0x279, 0x279, 0x279, 0 },
> + { 0x2a0, 0x2a0, 0x2a0, 0 },
> + { 0x2c9, 0x2c9, 0x2c9, 0 },
> + { 0x2f4, 0x2f4, 0x2f4, 0 },
> + { 0x320, 0x320, 0x320, 0 },
> + { 0x34d, 0x34d, 0x34d, 0 },
> + { 0x37c, 0x37c, 0x37c, 0 },
> + { 0x3ac, 0x3ac, 0x3ac, 0 },
> + { 0x3de, 0x3de, 0x3de, 0 },
> + { 0x411, 0x411, 0x411, 0 },
> + { 0x446, 0x446, 0x446, 0 },
> + { 0x47c, 0x47c, 0x47c, 0 },
> + { 0x4b4, 0x4b4, 0x4b4, 0 },
> + { 0x4ed, 0x4ed, 0x4ed, 0 },
> + { 0x528, 0x528, 0x528, 0 },
> + { 0x564, 0x564, 0x564, 0 },
> + { 0x5a3, 0x5a3, 0x5a3, 0 },
> + { 0x5e2, 0x5e2, 0x5e2, 0 },
> + { 0x624, 0x624, 0x624, 0 },
> + { 0x666, 0x666, 0x666, 0 },
> + { 0x6ab, 0x6ab, 0x6ab, 0 },
> + { 0x6f1, 0x6f1, 0x6f1, 0 },
> + { 0x739, 0x739, 0x739, 0 },
> + { 0x782, 0x782, 0x782, 0 },
> + { 0x7ce, 0x7ce, 0x7ce, 0 },
> + { 0x81b, 0x81b, 0x81b, 0 },
> + { 0x869, 0x869, 0x869, 0 },
> + { 0x8b9, 0x8b9, 0x8b9, 0 },
> + { 0x90b, 0x90b, 0x90b, 0 },
> + { 0x95f, 0x95f, 0x95f, 0 },
> + { 0x9b5, 0x9b5, 0x9b5, 0 },
> + { 0xa0c, 0xa0c, 0xa0c, 0 },
> + { 0xa65, 0xa65, 0xa65, 0 },
> + { 0xabf, 0xabf, 0xabf, 0 },
> + { 0xb1c, 0xb1c, 0xb1c, 0 },
> + { 0xb7a, 0xb7a, 0xb7a, 0 },
> + { 0xbda, 0xbda, 0xbda, 0 },
> + { 0xc3c, 0xc3c, 0xc3c, 0 },
> + { 0xca0, 0xca0, 0xca0, 0 },
> + { 0xd06, 0xd06, 0xd06, 0 },
> + { 0xd6d, 0xd6d, 0xd6d, 0 },
> + { 0xdd6, 0xdd6, 0xdd6, 0 },
> + { 0xe41, 0xe41, 0xe41, 0 },
> + { 0xeae, 0xeae, 0xeae, 0 },
> + { 0xf1d, 0xf1d, 0xf1d, 0 },
> + { 0xf8e, 0xf8e, 0xf8e, 0 },
> + { 0x1001, 0x1001, 0x1001, 0 },
> + { 0x1075, 0x1075, 0x1075, 0 },
> + { 0x10ec, 0x10ec, 0x10ec, 0 },
> + { 0x1164, 0x1164, 0x1164, 0 },
> + { 0x11de, 0x11de, 0x11de, 0 },
> + { 0x125a, 0x125a, 0x125a, 0 },
> + { 0x12d9, 0x12d9, 0x12d9, 0 },
> + { 0x1359, 0x1359, 0x1359, 0 },
> + { 0x13db, 0x13db, 0x13db, 0 },
> + { 0x145f, 0x145f, 0x145f, 0 },
> + { 0x14e5, 0x14e5, 0x14e5, 0 },
> + { 0x156d, 0x156d, 0x156d, 0 },
> + { 0x15f7, 0x15f7, 0x15f7, 0 },
> + { 0x1683, 0x1683, 0x1683, 0 },
> + { 0x1711, 0x1711, 0x1711, 0 },
> + { 0x17a1, 0x17a1, 0x17a1, 0 },
> + { 0x1833, 0x1833, 0x1833, 0 },
> + { 0x18c7, 0x18c7, 0x18c7, 0 },
> + { 0x195d, 0x195d, 0x195d, 0 },
> + { 0x19f6, 0x19f6, 0x19f6, 0 },
> + { 0x1a90, 0x1a90, 0x1a90, 0 },
> + { 0x1b2c, 0x1b2c, 0x1b2c, 0 },
> + { 0x1bcb, 0x1bcb, 0x1bcb, 0 },
> + { 0x1c6b, 0x1c6b, 0x1c6b, 0 },
> + { 0x1d0e, 0x1d0e, 0x1d0e, 0 },
> + { 0x1db3, 0x1db3, 0x1db3, 0 },
> + { 0x1e59, 0x1e59, 0x1e59, 0 },
> + { 0x1f02, 0x1f02, 0x1f02, 0 },
> + { 0x1fad, 0x1fad, 0x1fad, 0 },
> + { 0x205b, 0x205b, 0x205b, 0 },
> + { 0x210a, 0x210a, 0x210a, 0 },
> + { 0x21bb, 0x21bb, 0x21bb, 0 },
> + { 0x226f, 0x226f, 0x226f, 0 },
> + { 0x2325, 0x2325, 0x2325, 0 },
> + { 0x23dd, 0x23dd, 0x23dd, 0 },
> + { 0x2497, 0x2497, 0x2497, 0 },
> + { 0x2553, 0x2553, 0x2553, 0 },
> + { 0x2612, 0x2612, 0x2612, 0 },
> + { 0x26d2, 0x26d2, 0x26d2, 0 },
> + { 0x2795, 0x2795, 0x2795, 0 },
> + { 0x285a, 0x285a, 0x285a, 0 },
> + { 0x2922, 0x2922, 0x2922, 0 },
> + { 0x29eb, 0x29eb, 0x29eb, 0 },
> + { 0x2ab7, 0x2ab7, 0x2ab7, 0 },
> + { 0x2b85, 0x2b85, 0x2b85, 0 },
> + { 0x2c56, 0x2c56, 0x2c56, 0 },
> + { 0x2d28, 0x2d28, 0x2d28, 0 },
> + { 0x2dfd, 0x2dfd, 0x2dfd, 0 },
> + { 0x2ed4, 0x2ed4, 0x2ed4, 0 },
> + { 0x2fad, 0x2fad, 0x2fad, 0 },
> + { 0x3089, 0x3089, 0x3089, 0 },
> + { 0x3167, 0x3167, 0x3167, 0 },
> + { 0x3247, 0x3247, 0x3247, 0 },
> + { 0x332a, 0x332a, 0x332a, 0 },
> + { 0x340e, 0x340e, 0x340e, 0 },
> + { 0x34f5, 0x34f5, 0x34f5, 0 },
> + { 0x35df, 0x35df, 0x35df, 0 },
> + { 0x36cb, 0x36cb, 0x36cb, 0 },
> + { 0x37b9, 0x37b9, 0x37b9, 0 },
> + { 0x38a9, 0x38a9, 0x38a9, 0 },
> + { 0x399c, 0x399c, 0x399c, 0 },
> + { 0x3a91, 0x3a91, 0x3a91, 0 },
> + { 0x3b89, 0x3b89, 0x3b89, 0 },
> + { 0x3c83, 0x3c83, 0x3c83, 0 },
> + { 0x3d7f, 0x3d7f, 0x3d7f, 0 },
> + { 0x3e7e, 0x3e7e, 0x3e7e, 0 },
> + { 0x3f7f, 0x3f7f, 0x3f7f, 0 },
> + { 0x4082, 0x4082, 0x4082, 0 },
> + { 0x4188, 0x4188, 0x4188, 0 },
> + { 0x4290, 0x4290, 0x4290, 0 },
> + { 0x439b, 0x439b, 0x439b, 0 },
> + { 0x44a8, 0x44a8, 0x44a8, 0 },
> + { 0x45b7, 0x45b7, 0x45b7, 0 },
> + { 0x46c9, 0x46c9, 0x46c9, 0 },
> + { 0x47dd, 0x47dd, 0x47dd, 0 },
> + { 0x48f4, 0x48f4, 0x48f4, 0 },
> + { 0x4a0d, 0x4a0d, 0x4a0d, 0 },
> + { 0x4b29, 0x4b29, 0x4b29, 0 },
> + { 0x4c47, 0x4c47, 0x4c47, 0 },
> + { 0x4d68, 0x4d68, 0x4d68, 0 },
> + { 0x4e8b, 0x4e8b, 0x4e8b, 0 },
> + { 0x4fb1, 0x4fb1, 0x4fb1, 0 },
> + { 0x50d9, 0x50d9, 0x50d9, 0 },
> + { 0x5203, 0x5203, 0x5203, 0 },
> + { 0x5330, 0x5330, 0x5330, 0 },
> + { 0x5460, 0x5460, 0x5460, 0 },
> + { 0x5592, 0x5592, 0x5592, 0 },
> + { 0x56c6, 0x56c6, 0x56c6, 0 },
> + { 0x57fd, 0x57fd, 0x57fd, 0 },
> + { 0x5937, 0x5937, 0x5937, 0 },
> + { 0x5a73, 0x5a73, 0x5a73, 0 },
> + { 0x5bb2, 0x5bb2, 0x5bb2, 0 },
> + { 0x5cf3, 0x5cf3, 0x5cf3, 0 },
> + { 0x5e37, 0x5e37, 0x5e37, 0 },
> + { 0x5f7d, 0x5f7d, 0x5f7d, 0 },
> + { 0x60c6, 0x60c6, 0x60c6, 0 },
> + { 0x6212, 0x6212, 0x6212, 0 },
> + { 0x6360, 0x6360, 0x6360, 0 },
> + { 0x64b0, 0x64b0, 0x64b0, 0 },
> + { 0x6604, 0x6604, 0x6604, 0 },
> + { 0x6759, 0x6759, 0x6759, 0 },
> + { 0x68b2, 0x68b2, 0x68b2, 0 },
> + { 0x6a0d, 0x6a0d, 0x6a0d, 0 },
> + { 0x6b6a, 0x6b6a, 0x6b6a, 0 },
> + { 0x6ccb, 0x6ccb, 0x6ccb, 0 },
> + { 0x6e2d, 0x6e2d, 0x6e2d, 0 },
> + { 0x6f93, 0x6f93, 0x6f93, 0 },
> + { 0x70fb, 0x70fb, 0x70fb, 0 },
> + { 0x7266, 0x7266, 0x7266, 0 },
> + { 0x73d3, 0x73d3, 0x73d3, 0 },
> + { 0x7543, 0x7543, 0x7543, 0 },
> + { 0x76b6, 0x76b6, 0x76b6, 0 },
> + { 0x782b, 0x782b, 0x782b, 0 },
> + { 0x79a3, 0x79a3, 0x79a3, 0 },
> + { 0x7b1d, 0x7b1d, 0x7b1d, 0 },
> + { 0x7c9b, 0x7c9b, 0x7c9b, 0 },
> + { 0x7e1b, 0x7e1b, 0x7e1b, 0 },
> + { 0x7f9d, 0x7f9d, 0x7f9d, 0 },
> + { 0x8123, 0x8123, 0x8123, 0 },
> + { 0x82ab, 0x82ab, 0x82ab, 0 },
> + { 0x8436, 0x8436, 0x8436, 0 },
> + { 0x85c3, 0x85c3, 0x85c3, 0 },
> + { 0x8753, 0x8753, 0x8753, 0 },
> + { 0x88e6, 0x88e6, 0x88e6, 0 },
> + { 0x8a7c, 0x8a7c, 0x8a7c, 0 },
> + { 0x8c14, 0x8c14, 0x8c14, 0 },
> + { 0x8daf, 0x8daf, 0x8daf, 0 },
> + { 0x8f4d, 0x8f4d, 0x8f4d, 0 },
> + { 0x90ed, 0x90ed, 0x90ed, 0 },
> + { 0x9290, 0x9290, 0x9290, 0 },
> + { 0x9436, 0x9436, 0x9436, 0 },
> + { 0x95df, 0x95df, 0x95df, 0 },
> + { 0x978b, 0x978b, 0x978b, 0 },
> + { 0x9939, 0x9939, 0x9939, 0 },
> + { 0x9aea, 0x9aea, 0x9aea, 0 },
> + { 0x9c9e, 0x9c9e, 0x9c9e, 0 },
> + { 0x9e55, 0x9e55, 0x9e55, 0 },
> + { 0xa00e, 0xa00e, 0xa00e, 0 },
> + { 0xa1ca, 0xa1ca, 0xa1ca, 0 },
> + { 0xa389, 0xa389, 0xa389, 0 },
> + { 0xa54b, 0xa54b, 0xa54b, 0 },
> + { 0xa710, 0xa710, 0xa710, 0 },
> + { 0xa8d7, 0xa8d7, 0xa8d7, 0 },
> + { 0xaaa1, 0xaaa1, 0xaaa1, 0 },
> + { 0xac6e, 0xac6e, 0xac6e, 0 },
> + { 0xae3e, 0xae3e, 0xae3e, 0 },
> + { 0xb011, 0xb011, 0xb011, 0 },
> + { 0xb1e7, 0xb1e7, 0xb1e7, 0 },
> + { 0xb3bf, 0xb3bf, 0xb3bf, 0 },
> + { 0xb59a, 0xb59a, 0xb59a, 0 },
> + { 0xb778, 0xb778, 0xb778, 0 },
> + { 0xb959, 0xb959, 0xb959, 0 },
> + { 0xbb3d, 0xbb3d, 0xbb3d, 0 },
> + { 0xbd24, 0xbd24, 0xbd24, 0 },
> + { 0xbf0d, 0xbf0d, 0xbf0d, 0 },
> + { 0xc0fa, 0xc0fa, 0xc0fa, 0 },
> + { 0xc2e9, 0xc2e9, 0xc2e9, 0 },
> + { 0xc4db, 0xc4db, 0xc4db, 0 },
> + { 0xc6d0, 0xc6d0, 0xc6d0, 0 },
> + { 0xc8c8, 0xc8c8, 0xc8c8, 0 },
> + { 0xcac3, 0xcac3, 0xcac3, 0 },
> + { 0xccc1, 0xccc1, 0xccc1, 0 },
> + { 0xcec1, 0xcec1, 0xcec1, 0 },
> + { 0xd0c5, 0xd0c5, 0xd0c5, 0 },
> + { 0xd2cc, 0xd2cc, 0xd2cc, 0 },
> + { 0xd4d5, 0xd4d5, 0xd4d5, 0 },
> + { 0xd6e1, 0xd6e1, 0xd6e1, 0 },
> + { 0xd8f1, 0xd8f1, 0xd8f1, 0 },
> + { 0xdb03, 0xdb03, 0xdb03, 0 },
> + { 0xdd18, 0xdd18, 0xdd18, 0 },
> + { 0xdf30, 0xdf30, 0xdf30, 0 },
> + { 0xe14b, 0xe14b, 0xe14b, 0 },
> + { 0xe369, 0xe369, 0xe369, 0 },
> + { 0xe58a, 0xe58a, 0xe58a, 0 },
> + { 0xe7ae, 0xe7ae, 0xe7ae, 0 },
> + { 0xe9d5, 0xe9d5, 0xe9d5, 0 },
> + { 0xebff, 0xebff, 0xebff, 0 },
> + { 0xee2c, 0xee2c, 0xee2c, 0 },
> + { 0xf05c, 0xf05c, 0xf05c, 0 },
> + { 0xf28f, 0xf28f, 0xf28f, 0 },
> + { 0xf4c4, 0xf4c4, 0xf4c4, 0 },
> + { 0xf6fd, 0xf6fd, 0xf6fd, 0 },
> + { 0xf939, 0xf939, 0xf939, 0 },
> + { 0xfb78, 0xfb78, 0xfb78, 0 },
> + { 0xfdba, 0xfdba, 0xfdba, 0 },
> + { 0xffff, 0xffff, 0xffff, 0 }
> +};
> +
> +#if 0
> +struct vkms_color_lut srgb_eotf = {
> + .base = NULL,
> + . lut_length = LUT_SIZE,
> + .channel_value2index_ratio = drm_int2fixp(0xffff)
> + // .channel_value2index_ratio = 0 //drm_fixp_div(drm_int2fixp(0xffff), drm_int2fixp(LUT_SIZE))
> +};
> +
> +#else
> +const struct vkms_color_lut srgb_eotf = {
> + .base = srgb_array,
> + .lut_length = 256,
> + .channel_value2index_ratio = 16711935ll
> +};
> +
> +#endif
> +
> static u16 pre_mul_blend_channel(u16 src, u16 dst, u16 alpha)
> {
> u32 new_color;
> @@ -136,6 +414,39 @@ static void apply_lut(const struct vkms_crtc_state *crtc_state, struct line_buff
> }
> }
>
> +static void pre_blend_color_transform(const struct vkms_plane_state *plane_state, struct line_buffer *output_buffer)
> +{
> + struct drm_colorop *pipeline = plane_state->base.base.color_pipeline;
> + /* TODO this is probably wrong */
> + struct drm_colorop_state *colorop_state;
> +
> + if (!pipeline)
> + return;
> +
> + colorop_state = pipeline->state;
> +
> + if (!colorop_state)
> + return;
> +
> + for (size_t x = 0; x < output_buffer->n_pixels; x++) {
> + struct pixel_argb_u16 *pixel = &output_buffer->pixels[x];
> +
> + if (pipeline->type == DRM_COLOROP_1D_CURVE &&
> + colorop_state->bypass == false) {
> + switch (colorop_state->curve_1d_type) {
> + case DRM_COLOROP_1D_CURVE_SRGB_INV_EOTF:
> + break;
> + case DRM_COLOROP_1D_CURVE_SRGB_EOTF:
> + default:
> + pixel->r = apply_lut_to_channel_value(&srgb_eotf, pixel->r, LUT_RED);
> + pixel->g = apply_lut_to_channel_value(&srgb_eotf, pixel->g, LUT_GREEN);
> + pixel->b = apply_lut_to_channel_value(&srgb_eotf, pixel->b, LUT_BLUE);
> + break;
> + }
> + }
> + }
> +}
> +
> /**
> * @wb_frame_info: The writeback frame buffer metadata
> * @crtc_state: The crtc state
> @@ -168,8 +479,13 @@ static void blend(struct vkms_writeback_job *wb,
> continue;
>
> plane[i]->plane_read(stage_buffer, plane[i]->frame_info, y);
> +
> + /* do per-plane color transformations here */
> + // pre_blend_color_transform(plane[i], stage_buffer);
> +
> pre_mul_alpha_blend(plane[i]->frame_info, stage_buffer,
> output_buffer);
> + pre_blend_color_transform(plane[i], output_buffer);
I see it should be applied to the `stage_buffer` before blending (i.e.
pre_mul_alpha_blend()) and in the lines commented above. Were you
getting any unexpected result?
Otherwise, having this VKMS implementation looks very nice. Thank you!
Melissa
> }
>
> apply_lut(crtc_state, output_buffer);
> diff --git a/drivers/gpu/drm/vkms/vkms_drv.h b/drivers/gpu/drm/vkms/vkms_drv.h
> index 310b31f47928..c04f714cd486 100644
> --- a/drivers/gpu/drm/vkms/vkms_drv.h
> +++ b/drivers/gpu/drm/vkms/vkms_drv.h
> @@ -168,4 +168,8 @@ void vkms_set_composer(struct vkms_output *out, bool enabled);
> /* Writeback */
> int vkms_enable_writeback_connector(struct vkms_device *vkmsdev);
>
> +/* Colorops */
> +int vkms_initialize_colorops(struct drm_plane *plane);
> +
> +
> #endif /* _VKMS_DRV_H_ */
> diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_plane.c
> index b3f8a115cc23..cbffbdd7cbf9 100644
> --- a/drivers/gpu/drm/vkms/vkms_plane.c
> +++ b/drivers/gpu/drm/vkms/vkms_plane.c
> @@ -237,5 +237,7 @@ struct vkms_plane *vkms_plane_init(struct vkms_device *vkmsdev,
>
> drm_plane_helper_add(&plane->base, funcs);
>
> + vkms_initialize_colorops(&plane->base);
> +
> return plane;
> }
> --
> 2.42.0
>