mirror of
https://gitlab.com/veloren/veloren.git
synced 2024-08-30 18:12:32 +00:00
Ben Wallis
parent
a5f8b9ebf8
commit
5e58154885
@ -1,3 +1,5 @@
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const float FXAA_SCALE = 1.25;
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/**
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Basic FXAA implementation based on the code on geeks3d.com with the
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modification that the texture2DLod stuff was removed since it's
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@ -127,7 +129,11 @@ vec4 aa_apply(
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mediump vec2 v_rgbSE;
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mediump vec2 v_rgbM;
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float fxaa_scale = textureSize(sampler2D(tex, smplr), 0).x * 1.25 / resolution.x;
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#ifdef EXPERIMENTAL_BETTERAA
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float fxaa_scale = textureSize(sampler2D(tex, smplr), 0).x / 1000.0;
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#else
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float fxaa_scale = FXAA_SCALE;
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#endif
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vec2 scaled_fc = fragCoord * fxaa_scale;
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vec2 scaled_res = resolution * fxaa_scale;
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@ -49,6 +49,201 @@ uniform texture2D t_src_bloom;
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layout(location = 0) out vec4 tgt_color;
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#ifdef EXPERIMENTAL_BETTERAA
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vec3 wpos_at(vec2 uv) {
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float buf_depth = texture(sampler2D(t_src_depth, s_src_depth), uv).x - 0.0001;
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vec4 clip_space = vec4((uv * 2.0 - 1.0) * vec2(1, -1), buf_depth, 1.0);
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mat4 all_mat_inv = view_mat_inv * proj_mat_inv;
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vec4 view_space = all_mat_inv * clip_space;
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view_space /= view_space.w;
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if (buf_depth == 0.0) {
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vec3 direction = normalize(view_space.xyz);
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return direction.xyz * 524288.0625 + cam_pos.xyz;
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} else {
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return view_space.xyz;
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}
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}
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float depth_at(vec2 uv) {
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float buf_depth = texture(sampler2D(t_src_depth, s_src_depth), uv).x;
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return 1.0 / buf_depth;
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}
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float weighted_lerp(float x, float a, float b) {
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return pow(x, b / a);
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/* return x; */
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float xx = b * x - a * (1.0 - x);
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return sign(xx) * (1.0 - 1.0 / (1.0 + abs(xx))) * 0.5 + 0.5;
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}
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float vmax(vec3 v) {
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return max(v.x, max(v.y, v.z));
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}
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float vmax_but_one(vec3 v) {
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float m = max(v.x, max(v.y, v.z));
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if (v.x == m)
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return max(v.y, v.z);
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else if (v.y == m)
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return max(v.x, v.z);
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else
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return max(v.x, v.y);
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}
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vec4 better_aa_apply(texture2D tex, sampler smplr, vec2 fragCoord, vec2 resolution) {
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uvec2 src_sz = textureSize(sampler2D(tex, smplr), 0).xy;
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vec3 wpos = wpos_at(fragCoord / resolution);
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float dist = distance(cam_pos.xyz, wpos);
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vec3 dir = normalize(wpos - cam_pos.xyz);
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// vec4 interp = texelFetch(sampler2D(tex, smplr), ivec2(fragCoord / resolution * src_sz), 0);
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// vec4 interp = texture(sampler2D(tex, smplr), fragCoord / resolution);
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// vec4 interp = textureBicubic(tex, smplr, fragCoord * src_sz / resolution);
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vec4 interp = aa_apply(tex, smplr, t_src_depth, s_src_depth, fragCoord, resolution);
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vec4 original = texelFetch(sampler2D(tex, smplr), ivec2(fragCoord / resolution * src_sz), 0);
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// GRID
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/* if (mod(fragCoord.x, resolution.x / src_sz.x) < 0.9) { return vec4(0.0, 0.0, 0.0, 0.0); } */
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/* if (mod(fragCoord.y, resolution.y / src_sz.y) < 0.9) { return vec4(0.0, 0.0, 0.0, 0.0); } */
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vec2 pos = fragCoord;// - 0.5 * src_sz;
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// vec4 t00 = texelFetch(sampler2D(tex, smplr), ivec2(pos / resolution * src_sz + ivec2(0, 0)), 0);
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// vec4 t10 = texelFetch(sampler2D(tex, smplr), ivec2(pos / resolution * src_sz + ivec2(1, 0)), 0);
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// vec4 t01 = texelFetch(sampler2D(tex, smplr), ivec2(pos / resolution * src_sz + ivec2(0, 1)), 0);
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// vec4 t11 = texelFetch(sampler2D(tex, smplr), ivec2(pos / resolution * src_sz + ivec2(1, 1)), 0);
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vec3 w00 = wpos_at(floor(pos / resolution * vec2(src_sz) + ivec2(0, 0)) / vec2(src_sz));
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vec3 w10 = wpos_at(floor(pos / resolution * vec2(src_sz) + ivec2(1, 0)) / vec2(src_sz));
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vec3 w01 = wpos_at(floor(pos / resolution * vec2(src_sz) + ivec2(0, 1)) / vec2(src_sz));
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vec3 w11 = wpos_at(floor(pos / resolution * vec2(src_sz) + ivec2(1, 1)) / vec2(src_sz));
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float d00 = distance(w00, cam_pos.xyz);
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float d10 = distance(w10, cam_pos.xyz);
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float d01 = distance(w01, cam_pos.xyz);
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float d11 = distance(w11, cam_pos.xyz);
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vec2 px_fact = fract(pos / (resolution / vec2(src_sz)));
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// vec4 t0 = mix(t00, t10, weighted_lerp(px_fact.x, d00, d10));
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// vec4 t1 = mix(t01, t11, weighted_lerp(px_fact.x, d01, d11));
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vec3 w0 = (w00 * d00 * (1 - px_fact.x) + w10 * d10 * px_fact.x) / (d00 * (1 - px_fact.x) + d10 * px_fact.x);
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vec3 w1 = (w01 * d01 * (1 - px_fact.x) + w11 * d11 * px_fact.x) / (d01 * (1 - px_fact.x) + d11 * px_fact.x);
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float d0 = mix(d00, d10, px_fact.x);
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float d1 = mix(d01, d11, px_fact.x);
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float d_lerped = mix(d0, d1, px_fact.y);
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vec3 wpos_lerped = (w0 * d0 * (1 - px_fact.y) + w1 * d1 * px_fact.y) / (d0 * (1 - px_fact.y) + d1 * px_fact.y) + vec3(
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dir.y > 0.0 ? 0.0 : 0.5,
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dir.x > 0.0 ? 0.5 : 0.0,
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0.5
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);//mix(w0, w1, weighted_lerp(px_fact.y, 0.1 / d0, 0.1 / d1)) + 0.5;
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// vec4 interp = mix(t0, t1, weighted_lerp(px_fact.y, d0, d1));
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/*
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vec4 closest = vec4(0.0);
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float closest_dist = 100000.0;
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for (int i = -1; i < 2; i ++) {
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for (int j = -1; j < 2; j ++) {
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ivec2 rpos = ivec2(i, j);
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//float l = length(normalize(vec2(rpos)) - factor);
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vec4 texel = texelFetch(sampler2D(tex, smplr), ivec2(fragCoord / resolution * src_sz) + rpos, 0);
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float fov = 70.0;
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float texel_at_dist = dist / resolution.x * fov;
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vec3 diff = mod(wpos * texel_at_dist, vec3(1.0)) - 0.5;
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float dist = distance(interp.rgb, texel.rgb);// * 0.0 + (rpos.y - diff.z) * 1.0;// * (1.0 + l * 0.5);
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if (dist < closest_dist) {
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closest = texel;
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closest_dist = dist;
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}
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}
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}
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return closest;//interp;
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*/
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/*
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ivec2 closest = ivec2(0);
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vec3 closest_wpos = vec3(0);
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float closest_dist = 100000.0;
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for (int i = -1; i < 2; i ++) {
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for (int j = -1; j < 2; j ++) {
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ivec2 rpos = ivec2(i, j);
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vec3 wpos = wpos_at(((fragCoord / resolution * vec2(src_sz)) + rpos) / vec2(src_sz));
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float dist = distance(cam_pos.xyz, wpos);
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if (dist < closest_dist) {
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closest = rpos;
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closest_wpos = wpos;
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closest_dist = dist;
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}
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}
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}
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float fov = 70.0;
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vec2 texel_at_dist = src_sz / (fov * closest_dist);
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vec3 diff = fract(closest_wpos) * 2.0 - 1.0;
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vec2 rpos = vec2(diff.y * dir.x, -diff.z * -abs(dir.x))
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//+ vec2(diff.x * -dir.y, diff.z * abs(dir.y))
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//+ vec2(diff.z * -dir.z * 0, diff.x * abs(dir.z))
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;
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vec4 texel = texelFetch(sampler2D(tex, smplr), ivec2(fragCoord / resolution * src_sz + closest + rpos), 0);
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return texel;
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*/
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float original_dist = dist;
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vec4 closest_texel = vec4(0);
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vec3 closest_wpos = vec3(0);
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float closest_dist = 100000.0;
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vec4 weighted_sum = vec4(0.0);
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float weighted_total = 0.0;
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for (int i = -1; i < 2; i ++) {
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for (int j = -1; j < 2; j ++) {
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ivec2 rpos = ivec2(i, j);
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vec3 wpos = wpos_at(floor(fragCoord / resolution * vec2(src_sz) + rpos - 1) / vec2(src_sz));
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float tdist = distance(cam_pos.xyz, wpos);
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//float fov = 1.2;
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//float texel_at_dist = src_sz.x / (fov * tdist);
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vec4 texel = texelFetch(sampler2D(tex, smplr), ivec2(fragCoord / resolution * src_sz) + rpos, 0);
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//texel = texture(sampler2D(tex, smplr), floor(fragCoord / resolution * vec2(src_sz) + rpos) / vec2(src_sz));
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float texel_dist;
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if (true && false) {
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texel_dist = distance(wpos + fract(wpos_lerped * 2.0) / 2.0, wpos_lerped);
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} else if (original_dist < 15.0 || true) {
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texel_dist = distance(interp.rgb, texel.rgb);
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} else {
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texel_dist = length(mod(wpos, vec3(1.0)) - 0.5);
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}
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if (texel_dist < closest_dist) {
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closest_texel = texel;
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closest_wpos = wpos;
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closest_dist = texel_dist;
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}
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//float weight = 1.0 / distance(interp.rgb, texel.rgb);
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float weight = 1.0 / distance(wpos, wpos_lerped);
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weighted_sum += texel * weight;
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weighted_total += weight;
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}
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}
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//return vec4(px_fact.xy, 1.0, 1.0);
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//return mod(10.0 * d_lerped, 1.0).xxxx;
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//return mod(wpos_lerped, 1.0).xyzx;
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//return weighted_sum / weighted_total;
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return closest_texel;
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}
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#endif
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vec3 rgb2hsv(vec3 c) {
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vec4 K = vec4(0.0, -1.0 / 3.0, 2.0 / 3.0, -1.0);
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vec4 p = mix(vec4(c.bg, K.wz), vec4(c.gb, K.xy), step(c.b, c.g));
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@ -215,7 +410,11 @@ void main() {
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}
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#endif
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#ifdef EXPERIMENTAL_BETTERAA
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vec4 aa_color = better_aa_apply(t_src_color, s_src_color, sample_uv * screen_res.xy, screen_res.xy);
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#else
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vec4 aa_color = aa_apply(t_src_color, s_src_color, t_src_depth, s_src_depth, sample_uv * screen_res.xy, screen_res.xy);
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#endif
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#ifdef EXPERIMENTAL_SOBEL
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@ -943,7 +943,7 @@ impl<'a> Widget for Video<'a> {
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let upscale_factors = [
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// Upscaling
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0.1, 0.15, 0.2, 0.25, 0.35, 0.5, 0.65, 0.75, 0.85, 1.0,
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0.01, 0.025, 0.1, 0.15, 0.2, 0.25, 0.35, 0.5, 0.65, 0.75, 0.85, 1.0,
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// Downscaling (equivalent to SSAA)
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1.25, 1.5, 1.75, 2.0,
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];
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@ -956,7 +956,7 @@ impl<'a> Widget for Video<'a> {
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if let Some(clicked) = DropDownList::new(
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&upscale_factors
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.iter()
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.map(|factor| format!("{n:.*}", 3, n = factor))
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.map(|factor| format!("{n:.*}", 2, n = factor))
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.collect::<Vec<String>>(),
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selected,
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)
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@ -499,4 +499,6 @@ pub enum ExperimentalShader {
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NoRainbows,
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/// Make objects appear wet when appropriate.
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Wetness,
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/// An attempt at better anti-aliasing (requires FXAA).
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BetterAA,
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}
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