Atlas - testgpurender_msdf.frag.hlsl
Home / ext / SDL / test
Lines: 1 | Size: 1069 bytes
[Download] [Show on GitHub] [Search similar files] [Raw] [Raw (proxy)] 
[FILE BEGIN]
1cbuffer Context : register(b0, space3) {
2    float distance_field_range;
3    float2 texture_size;
4};
5
6Texture2D u_texture : register(t0, space2);
7SamplerState u_sampler : register(s0, space2);
8
9struct PSInput {
10    float4 v_color : COLOR0;
11    float2 v_uv : TEXCOORD0;
12};
13
14struct PSOutput {
15    float4 o_color : SV_Target;
16};
17
18float median(float r, float g, float b) {
19    return max(min(r, g), min(max(r, g), b));
20}
21
22float screenPxRange(float2 texCoord) {
23    float2 unitRange = float2(distance_field_range, distance_field_range)/texture_size;
24    float2 screenTexSize = float2(1.0, 1.0)/fwidth(texCoord);
25    return max(0.5*dot(unitRange, screenTexSize), 1.0);
26}
27
28PSOutput main(PSInput input) {
29    PSOutput output;
30    float3 msd = u_texture.Sample(u_sampler, input.v_uv).rgb;
31    float sd = median(msd.r, msd.g, msd.b);
32    float screenPxDistance = screenPxRange(input.v_uv)*(sd - 0.5);
33    float opacity = clamp(screenPxDistance + 0.5, 0.0, 1.0);
34    output.o_color.rgb = input.v_color.rgb;
35    output.o_color.a = (input.v_color.a * opacity);
36    return output;
37}
38
[FILE END]
(C) 2025 0x4248
(C) 2025 4248 Media and 4248 Systems, All part of 0x4248
See LICENCE files for more information. Not all files are by 0x4248 always check Licencing.