mirror of
https://github.com/kmc-jp/n64-emu.git
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107 lines
No EOL
3.3 KiB
Text
107 lines
No EOL
3.3 KiB
Text
#version 450
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/* Copyright (c) 2020 Themaister
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "small_types.h"
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layout(local_size_x = 16, local_size_y = 8) in;
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// Copies VRAM into a texture which is then consumed by VI scanout.
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layout(set = 0, binding = 0, rgba8ui) uniform writeonly uimage2D uAAInput;
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layout(set = 0, binding = 1, std430) readonly buffer RDRAM16
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{
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mem_u16 elems[];
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} vram16;
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layout(set = 0, binding = 1, std430) readonly buffer RDRAM32
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{
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uint elems[];
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} vram32;
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layout(set = 0, binding = 2, std430) readonly buffer HiddenRDRAM
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{
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mem_u8 elems[];
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} hidden_vram;
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layout(push_constant, std430) uniform Registers
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{
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int fb_offset;
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int fb_width;
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ivec2 offset;
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ivec2 resolution;
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} registers;
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layout(constant_id = 0) const int RDRAM_SIZE = 0;
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const int RDRAM_MASK_8 = RDRAM_SIZE - 1;
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const int RDRAM_MASK_16 = RDRAM_MASK_8 >> 1;
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const int RDRAM_MASK_32 = RDRAM_MASK_16 >> 1;
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layout(constant_id = 2) const int SCALING_LOG2 = 0;
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const int SCALING_FACTOR = 1 << SCALING_LOG2;
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#include "vi_status.h"
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uvec4 fetch_color(ivec2 coord)
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{
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ivec2 slice2d = coord & (SCALING_FACTOR - 1);
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coord >>= SCALING_LOG2;
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int slice = slice2d.y * SCALING_FACTOR + slice2d.x;
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uvec4 color;
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if (FMT_RGBA8888)
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{
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int linear_coord = coord.y * registers.fb_width + coord.x + registers.fb_offset;
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linear_coord &= RDRAM_MASK_32;
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linear_coord += slice * (RDRAM_SIZE >> 2);
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uint word = uint(vram32.elems[linear_coord]);
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color = (uvec4(word) >> uvec4(24, 16, 8, 5)) & uvec4(0xff, 0xff, 0xff, 7);
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}
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else if (FMT_RGBA5551)
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{
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int linear_coord = coord.y * registers.fb_width + coord.x + registers.fb_offset;
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linear_coord &= RDRAM_MASK_16;
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linear_coord += slice * (RDRAM_SIZE >> 1);
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uint word = uint(vram16.elems[linear_coord ^ 1]);
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uint hidden_word = uint(hidden_vram.elems[linear_coord]);
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uint r = (word >> 8u) & 0xf8u;
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uint g = (word >> 3u) & 0xf8u;
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uint b = (word << 2u) & 0xf8u;
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uint a = ((word & 1u) << 2u) | hidden_word;
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color = uvec4(r, g, b, a);
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}
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else
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color = uvec4(0);
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if (!FETCH_AA)
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color.a = 7u;
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return color;
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}
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void main()
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{
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if (any(greaterThanEqual(gl_GlobalInvocationID.xy, registers.resolution)))
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return;
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ivec2 coord = ivec2(gl_GlobalInvocationID.xy) + registers.offset;
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uvec4 col = fetch_color(coord);
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imageStore(uAAInput, ivec2(gl_GlobalInvocationID.xy), col);
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} |