125 lines
4.1 KiB
GLSL
125 lines
4.1 KiB
GLSL
/**
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*
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* RenderPipeline
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*
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* Copyright (c) 2014-2016 tobspr <toref_val.springer1@gmail.com>
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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 shall be included in
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* 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, 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
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* THE SOFTWARE.
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*
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*/
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#version 430
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#pragma include "render_pipeline_base.inc.glsl"
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#pragma include "dof.inc.glsl"
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#pragma include "includes/noise.inc.glsl"
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uniform sampler2D ShadedScene;
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uniform sampler2D PresortResult;
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uniform sampler2D PrecomputedCoC;
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uniform sampler2D TileMinMax;
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out vec4 result;
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/*
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WORK IN PROGRESS
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This code is code in progress and such not formatted very nicely nor commented!
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*/
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float intersect_circle(vec2 d, float radius) {
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float latt = saturate(length(d * vec2(1, 1)) / radius);
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latt = pow(latt, 10.0);
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latt = 1 - latt;
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return latt;
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if (length(d) <= radius) {
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return 1.0;
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}
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return 0.0;
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}
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void main() {
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vec2 texcoord = get_texcoord();
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ivec2 tile_coord = ivec2(ivec2(gl_FragCoord.xy) / vec2(tile_size));
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vec2 tile_data = texelFetch(TileMinMax, tile_coord, 0).xy;
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float tile_max_depth = tile_data.x;
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float tile_max_coc = tile_data.y;
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vec3 presort_result = textureLod(PresortResult, texcoord, 0).xyz;
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float mid_coc = presort_result.x;
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if (tile_max_coc <= 1e-4) {
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result = textureLod(ShadedScene, texcoord, 0);
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result.w = 0;
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}
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vec2 max_radius = 16.0 / SCREEN_SIZE;
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vec3 jitter = rand_rgb(texcoord);
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const int num_ring_samples = 4;
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float max_length = length(max_radius * vec2(1, 1));
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int num_samples = 0;
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vec3 scene_color = textureLod(ShadedScene, texcoord, 0).xyz;
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float alpha = 0.0;
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vec4 foreground = vec4(scene_color, 1) * 1e-4;
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vec4 background = vec4(scene_color, 1) * 1e-4;
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for (int ring = 0; ring <= num_ring_samples; ++ring) {
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int n_samples = max(1, 8 * ring);
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vec2 r = max_radius * ring / float(num_ring_samples) * (tile_max_coc);
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// vec2 r = max_radius * ring / float(num_ring_samples);
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for (int i = 0; i < n_samples; ++i) {
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++num_samples;
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float phi = i / float(n_samples) * TWO_PI;
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float x_offs = sin(phi);
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float y_offs = cos(phi);
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vec2 tcoord = texcoord + vec2(x_offs, y_offs) * r;
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// tcoord += jitter.xy * 0.1 * r;
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// XXX: Instead of manual clamping, use a near filtered texture
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tcoord = truncate_coordinate(tcoord);
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vec3 sample_data = textureLod(PresortResult, tcoord, 0).xyz;
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vec3 color_data = textureLod(PrecomputedCoC, tcoord, 0).xyz;
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float coc_weight = intersect_circle(r, sample_data.x * max_length);
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coc_weight *= 1.0 / max(1e-9, sample_data.x * sample_data.x);
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foreground += vec4(color_data, 1) * coc_weight;
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// foreground += vec4(color_data, 1) * coc_weight * sample_data.y;
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// background += vec4(color_data, 1) * coc_weight * sample_data.z;
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}
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}
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foreground.xyz /= max(1e-5, foreground.w);
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// background.xyz /= max(1e-5, background.w);
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// result = mix(background, foreground, saturate(2 * foreground.w / num_samples));
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result = foreground;
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result.w = mid_coc;
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}
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