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quakeforge/include/QF/Vulkan/qf_palette.h

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[vulkan] Upload palette as a 16x16 image It turns out my approach to alias skin coloring just doesn't work for the quake data due to the color curves not having a linear relationship, especially the bottom colors.
2022-11-15 00:26:17 +00:00
/*
qf_palette.h
Vulkan matrix "pass"
Copyright (C) 2021 Bill Currie <bill@taniwha.org>
Author: Bill Currie <bill@taniwha.org>
Date: 2021/12/8
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
*/
#ifndef __QF_Vulkan_qf_palette_h
#define __QF_Vulkan_qf_palette_h
#include "QF/darray.h"
#include "QF/Vulkan/qf_vid.h"
#include "QF/Vulkan/command.h"
#include "QF/Vulkan/image.h"
typedef struct palettectx_s {
struct qfv_tex_s *palette;
VkSampler sampler;
[vulkan] Use palette lookups for top/bottom colors As the RGB curves for many of the color rows are not linearly related, my idea of scaling the brightest color in the row just didn't work. Using a masked palette lookup works much better as it allows any curves. Also, because the palette is uploaded as a grid and the coordinates are calculated on the CPU, the system is extendable beyond 8-bit palettes. This isn't quite complete as the top and bottom colors are still in separate layers but their indices and masks can fit in just one, but this requires reworking the texture setup (for another commit).
2022-11-15 02:47:28 +00:00
VkDescriptorSet descriptor;
[vulkan] Upload palette as a 16x16 image It turns out my approach to alias skin coloring just doesn't work for the quake data due to the color curves not having a linear relationship, especially the bottom colors.
2022-11-15 00:26:17 +00:00
} palettectx_t;
struct vulkan_ctx_s;
void Vulkan_Palette_Update (struct vulkan_ctx_s *ctx, const byte *palette);
void Vulkan_Palette_Init (struct vulkan_ctx_s *ctx, const byte *palette);
void Vulkan_Palette_Shutdown (struct vulkan_ctx_s *ctx);
[vulkan] Use palette lookups for top/bottom colors As the RGB curves for many of the color rows are not linearly related, my idea of scaling the brightest color in the row just didn't work. Using a masked palette lookup works much better as it allows any curves. Also, because the palette is uploaded as a grid and the coordinates are calculated on the CPU, the system is extendable beyond 8-bit palettes. This isn't quite complete as the top and bottom colors are still in separate layers but their indices and masks can fit in just one, but this requires reworking the texture setup (for another commit).
2022-11-15 02:47:28 +00:00
VkDescriptorSet Vulkan_Palette_Descriptor (struct vulkan_ctx_s *ctx) __attribute__((pure));
[vulkan] Upload palette as a 16x16 image It turns out my approach to alias skin coloring just doesn't work for the quake data due to the color curves not having a linear relationship, especially the bottom colors.
2022-11-15 00:26:17 +00:00
#endif//__QF_Vulkan_qf_palette_h
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