74 lines
2.3 KiB
Plaintext
74 lines
2.3 KiB
Plaintext
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uniform mat4 model, view;
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uniform sampler2D u_texture2d;
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uniform vec3 u_coefficients_sh[9];
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uniform bool u_textured = true;
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uniform bool u_lit = false;
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uniform bool u_matcaps = false;
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uniform vec4 u_diffuse = vec4(1.0,1.0,1.0,1.0);
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#ifdef RIM
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in vec3 v_position;
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#endif
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in vec3 v_normal, v_normal_ws;
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in vec2 v_texcoord;
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in vec4 v_color;
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out vec4 fragcolor;
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{{include-shadowmap}}
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in vec4 vpeye;
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in vec4 vneye;
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in vec4 sc;
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vec4 shadowing() {
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return shadowmap(vpeye, vneye, v_texcoord, sc);
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}
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void main() {
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vec3 n = /*normalize*/(v_normal);
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// SH lighting
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vec4 lit = vec4(1.0, 1.0, 1.0, 1.0);
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vec3 SHLightResult[9];
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SHLightResult[0] = 0.282095f * u_coefficients_sh[0];
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SHLightResult[1] = -0.488603f * u_coefficients_sh[1] * n.y;
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SHLightResult[2] = 0.488603f * u_coefficients_sh[2] * n.z;
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SHLightResult[3] = -0.488603f * u_coefficients_sh[3] * n.x;
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SHLightResult[4] = 1.092548f * u_coefficients_sh[4] * n.x * n.y;
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SHLightResult[5] = -1.092548f * u_coefficients_sh[5] * n.y * n.z;
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SHLightResult[6] = 0.315392f * u_coefficients_sh[6] * (3.0f * n.z * n.z - 1.0f);
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SHLightResult[7] = -1.092548f * u_coefficients_sh[7] * n.x * n.z;
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SHLightResult[8] = 0.546274f * u_coefficients_sh[8] * (n.x * n.x - n.y * n.y);
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vec3 result = vec3(0.0);
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for (int i = 0; i < 9; ++i)
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result += SHLightResult[i];
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if( (result.x*result.x+result.y*result.y+result.z*result.z) > 0.0 ) lit = vec4(result, 1.0);
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// base
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vec4 diffuse;
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if(u_matcaps) {
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vec2 muv = vec2(view * vec4(v_normal_ws, 0))*0.5+vec2(0.5,0.5); // normal (model space) to view space
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diffuse = texture(u_texture2d, vec2(muv.x, 1.0-muv.y));
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} else if(u_textured) {
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diffuse = texture(u_texture2d, v_texcoord);
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} else {
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diffuse = u_diffuse; // * v_color;
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}
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// lighting mix
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fragcolor = diffuse * lit * shadowing();
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// rimlight
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#ifdef RIM
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{vec3 n = normalize(mat3(M) * v_normal); // convert normal to view space
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vec3 p = (M * vec4(v_position,1.0)).xyz; // convert position to view space
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vec3 v = normalize(-p); // eye vector
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float rim = 1.0 - max(dot(v, n), 0.0); // rimlight
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rim = smoothstep(1.0-0.01, 1.0, rim); // intensity (0.01)
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fragcolor += vec4(0.0, 0.0, rim, 1.0);} // blue
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#endif
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}
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