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July 23, 2018 15:51
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#if BGFX_SHADER_LANGUAGE_GLSL == 110 | |
mat4 transpose(in mat4 mat) | |
{ | |
vec4 i0 = mat[0]; | |
vec4 i1 = mat[1]; | |
vec4 i2 = mat[2]; | |
vec4 i3 = mat[3]; | |
mat4 result = mat4( | |
vec4(i0.x, i1.x, i2.x, i3.x), | |
vec4(i0.y, i1.y, i2.y, i3.y), | |
vec4(i0.z, i1.z, i2.z, i3.z), | |
vec4(i0.w, i1.w, i2.w, i3.w) | |
); | |
return result; | |
} | |
mat4 inverse(mat4 m) { | |
float | |
a00 = m[0][0], a01 = m[0][1], a02 = m[0][2], a03 = m[0][3], | |
a10 = m[1][0], a11 = m[1][1], a12 = m[1][2], a13 = m[1][3], | |
a20 = m[2][0], a21 = m[2][1], a22 = m[2][2], a23 = m[2][3], | |
a30 = m[3][0], a31 = m[3][1], a32 = m[3][2], a33 = m[3][3], | |
b00 = a00 * a11 - a01 * a10, | |
b01 = a00 * a12 - a02 * a10, | |
b02 = a00 * a13 - a03 * a10, | |
b03 = a01 * a12 - a02 * a11, | |
b04 = a01 * a13 - a03 * a11, | |
b05 = a02 * a13 - a03 * a12, | |
b06 = a20 * a31 - a21 * a30, | |
b07 = a20 * a32 - a22 * a30, | |
b08 = a20 * a33 - a23 * a30, | |
b09 = a21 * a32 - a22 * a31, | |
b10 = a21 * a33 - a23 * a31, | |
b11 = a22 * a33 - a23 * a32, | |
det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06; | |
return mat4( | |
a11 * b11 - a12 * b10 + a13 * b09, | |
a02 * b10 - a01 * b11 - a03 * b09, | |
a31 * b05 - a32 * b04 + a33 * b03, | |
a22 * b04 - a21 * b05 - a23 * b03, | |
a12 * b08 - a10 * b11 - a13 * b07, | |
a00 * b11 - a02 * b08 + a03 * b07, | |
a32 * b02 - a30 * b05 - a33 * b01, | |
a20 * b05 - a22 * b02 + a23 * b01, | |
a10 * b10 - a11 * b08 + a13 * b06, | |
a01 * b08 - a00 * b10 - a03 * b06, | |
a30 * b04 - a31 * b02 + a33 * b00, | |
a21 * b02 - a20 * b04 - a23 * b00, | |
a11 * b07 - a10 * b09 - a12 * b06, | |
a00 * b09 - a01 * b07 + a02 * b06, | |
a31 * b01 - a30 * b03 - a32 * b00, | |
a20 * b03 - a21 * b01 + a22 * b00) / det; | |
} | |
#endif |
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