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https://github.com/kmc-jp/n64-emu.git
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103 lines
3.6 KiB
Text
103 lines
3.6 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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// RIP to any GPU which attempts to execute this monstrosity :)
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#if SUBGROUP
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#extension GL_KHR_shader_subgroup_basic : require
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#extension GL_KHR_shader_subgroup_vote : require
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#extension GL_KHR_shader_subgroup_ballot : require
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#extension GL_KHR_shader_subgroup_arithmetic : require
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#endif
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#include "small_types.h"
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layout(local_size_x_id = 3, local_size_y_id = 4) in;
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#include "debug.h"
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#include "data_structures_buffers.h"
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#include "noise.h"
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#include "memory_interfacing.h"
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#include "shading.h"
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layout(push_constant, std430) uniform Registers
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{
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uint fb_addr_index;
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uint fb_depth_addr_index;
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uint fb_width;
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uint fb_height;
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uint group_mask;
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} registers;
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layout(constant_id = 5) const int MAX_PRIMITIVES = 256;
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layout(constant_id = 6) const int MAX_WIDTH = 1024;
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const int TILE_BINNING_STRIDE = MAX_PRIMITIVES / 32;
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const int MAX_TILES_X = MAX_WIDTH / int(gl_WorkGroupSize.x);
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void main()
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{
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int x = int(gl_GlobalInvocationID.x);
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int y = int(gl_GlobalInvocationID.y);
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ivec2 tile = ivec2(gl_WorkGroupID.xy);
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int linear_tile = tile.x + tile.y * MAX_TILES_X;
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int linear_tile_base = linear_tile * TILE_BINNING_STRIDE;
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uint coarse_binned = tile_binning_coarse.elems[linear_tile] & registers.group_mask;
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if (coarse_binned == 0u)
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return;
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init_tile(gl_GlobalInvocationID.xy,
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registers.fb_width, registers.fb_height,
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registers.fb_addr_index, registers.fb_depth_addr_index);
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while (coarse_binned != 0u)
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{
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int mask_index = findLSB(coarse_binned);
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coarse_binned &= ~uint(1 << mask_index);
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uint binned = tile_binning.elems[linear_tile_base + mask_index];
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while (binned != 0u)
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{
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int i = findLSB(binned);
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binned &= ~uint(1 << i);
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uint primitive_index = uint(i + 32 * mask_index);
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ShadedData shaded;
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if (shade_pixel(x, y, primitive_index, shaded))
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{
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if ((shaded.coverage_count & COVERAGE_FILL_BIT) != 0)
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fill_color(derived_setup.elems[primitive_index].fill_color);
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else if ((shaded.coverage_count & COVERAGE_COPY_BIT) != 0)
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copy_pipeline(shaded.z_dith, primitive_index);
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else
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depth_blend(x, y, primitive_index, shaded);
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}
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}
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}
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finish_tile(gl_GlobalInvocationID.xy,
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registers.fb_width, registers.fb_height,
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registers.fb_addr_index, registers.fb_depth_addr_index);
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}
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