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480bdff4b5
Co-authored-by: Karmjit Mahil <Karmjit.Mahil@imgtec.com> Co-authored-by: Matt Coster <matt.coster@imgtec.com> Co-authored-by: Sarah Walker <sarah.walker@imgtec.com> Signed-off-by: Rajnesh Kanwal <rajnesh.kanwal@imgtec.com> Signed-off-by: Karmjit Mahil <Karmjit.Mahil@imgtec.com> Signed-off-by: Matt Coster <matt.coster@imgtec.com> Signed-off-by: Sarah Walker <sarah.walker@imgtec.com> Acked-by: Frank Binns <frank.binns@imgtec.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21550>
132 lines
3.9 KiB
C
132 lines
3.9 KiB
C
/*
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* Copyright © 2022 Imagination Technologies Ltd.
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*
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* based in part on radv driver which is:
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* Copyright © 2016 Red Hat.
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* Copyright © 2016 Bas Nieuwenhuizen
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*
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* Based on u_format.h which is:
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* Copyright 2009-2010 VMware, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef VK_FORMAT_H
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#define VK_FORMAT_H
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#include <stdbool.h>
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#include <util/format/u_format.h>
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#include <vulkan/util/vk_format.h>
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#include <vulkan/vulkan.h>
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#include "util/u_endian.h"
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static inline bool vk_format_is_alpha_on_msb(VkFormat vk_format)
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{
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const struct util_format_description *desc =
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vk_format_description(vk_format);
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return (desc->colorspace == UTIL_FORMAT_COLORSPACE_RGB ||
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desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB) &&
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#if UTIL_ARCH_BIG_ENDIAN
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desc->swizzle[3] == PIPE_SWIZZLE_X;
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#else
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desc->swizzle[3] == PIPE_SWIZZLE_W;
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#endif
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}
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static inline uint vk_format_get_channel_width(VkFormat vk_format,
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uint32_t channel)
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{
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const struct util_format_description *desc =
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vk_format_description(vk_format);
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return desc->channel[channel].size;
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}
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static inline bool vk_format_has_32bit_component(VkFormat vk_format)
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{
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const struct util_format_description *desc =
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vk_format_description(vk_format);
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for (uint32_t i = 0; i < desc->nr_channels; i++) {
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if (desc->channel[i].size == 32U)
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return true;
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}
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return false;
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}
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static inline bool vk_format_is_normalized(VkFormat vk_format)
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{
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const struct util_format_description *desc =
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vk_format_description(vk_format);
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for (uint32_t i = 0; i < desc->nr_channels; i++) {
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if (!desc->channel[i].normalized)
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return false;
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}
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return true;
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}
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static inline uint32_t
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vk_format_get_common_color_channel_count(VkFormat src_format,
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VkFormat dst_format)
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{
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const struct util_format_description *dst_desc =
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vk_format_description(dst_format);
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const struct util_format_description *src_desc =
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vk_format_description(src_format);
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uint32_t count = 0;
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/* Check if destination format is alpha only and source format has alpha
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* channel.
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*/
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if (util_format_is_alpha(vk_format_to_pipe_format(dst_format))) {
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count = 1;
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} else if (dst_desc->nr_channels <= src_desc->nr_channels) {
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for (uint32_t i = 0; i < dst_desc->nr_channels; i++) {
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enum pipe_swizzle swizzle = dst_desc->swizzle[i];
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if (swizzle > PIPE_SWIZZLE_W)
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continue;
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for (uint32_t j = 0; j < src_desc->nr_channels; j++) {
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if (src_desc->swizzle[j] == swizzle) {
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count++;
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break;
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}
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}
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}
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} else {
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count = dst_desc->nr_channels;
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}
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return count;
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}
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static inline bool vk_format_is_alpha(VkFormat format)
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{
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return util_format_is_alpha(vk_format_to_pipe_format(format));
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}
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#endif /* VK_FORMAT_H */
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