97 lines
No EOL
2.5 KiB
HLSL
97 lines
No EOL
2.5 KiB
HLSL
#include "stereokit.hlsli"
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//--name = dofdev/oriel
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// float4 color;
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float _height;
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float _ypos;
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struct vsIn {
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float4 pos : SV_POSITION;
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float3 norm : NORMAL0;
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float2 uv : TEXCOORD0;
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float4 col : COLOR0;
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};
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struct psIn {
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float4 pos : SV_POSITION;
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float3 campos : NORMAL0;
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float3 world : NORMAL1;
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float3 norm : NORMAL2;
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float2 uv : TEXCOORD0;
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float4 color : COLOR0;
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uint view_id : SV_RenderTargetArrayIndex;
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};
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psIn vs(vsIn input, uint id : SV_InstanceID) {
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psIn o;
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o.view_id = id % sk_view_count;
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id = id / sk_view_count;
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o.campos = sk_camera_pos[o.view_id].xyz;
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o.world = mul(input.pos, sk_inst[id].world).xyz;
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o.pos = mul(float4(o.world, 1), sk_viewproj[o.view_id]);
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o.norm = normalize(mul(input.norm, (float3x3)sk_inst[id].world));
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o.uv = input.uv;
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o.color = input.col;
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float lighting = dot(o.norm, normalize(float3(-0.3, 0.6, 0.1)));
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lighting = (clamp(lighting, 0, 1) * 0.8) + 0.2;
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o.color.rgb = o.color.rgb * lighting;
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return o;
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}
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float3 cross(float3 a, float3 b) {
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return float3(a.y * b.z - a.z * b.y, a.z * b.x - a.x * b.z, a.x * b.y - a.y * b.x);
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}
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float dot(float3 a, float3 b) {
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return a.x * b.x + a.y * b.y + a.z * b.z;
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}
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float tri_raycast(float3 origin, float3 dir) {
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float final = -1;
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float3 v0 = float3(0, 0, 0);
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float3 v1 = float3(0, 0, 1);
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float3 v2 = float3(1, 0, 0);
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float3 e1 = v1 - v0;
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float3 e2 = v2 - v0;
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float3 h = cross(dir, e2);
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float a = dot(e1, h);
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if (a > -0.00001 && a < 0.00001) {} else{
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float f = 1 / a;
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float3 s = origin - v0;
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float u = f * dot(s, h);
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if (u < 0.0 || u > 1.0) {} else {
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float3 q = cross(s, e1);
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float v = f * dot(dir, q);
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if (v < 0.0 || u + v > 1.0) {} else {
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float t = f * dot(e2, q);
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if (t > 0.00001) { final = 1.0;} // t
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}
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}
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}
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return final;
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}
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float4 ps(psIn input) : SV_TARGET {
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// if (input.world.y - _ypos > (_height / 2.0) - 0.06) {
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// // brighten;
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// input.color.r += (1.0 - input.color.r) / 2.0;
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// input.color.g += (1.0 - input.color.g) / 2.0;
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// input.color.b += (1.0 - input.color.b) / 2.0;
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// return input.color;
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// }
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// clamp how dark the object is *hsv
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// float value = input.color.r * 0.3 + input.color.g * 0.59 + input.color.b * 0.11;
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// blue tint
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input.color.r /= 5.0;
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input.color.g /= 5.0;
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// input.color.a = 0.5;
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// raycast or raymarch
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float3 ray = normalize(input.world - input.campos);
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input.color = float4(float3(1,1,1) * max(tri_raycast(input.world, ray), 0.0), 1);
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return input.color;
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} |