35 lines
976 B
Python
35 lines
976 B
Python
$input a_position
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$output f_position
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uniform vec4 u_position;
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uniform vec4 u_rotation;
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uniform vec4 u_scale;
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#include <bgfx_shader.sh>
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#include <shaderlib.sh>
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void main() {
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// rotation
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mat3 x_rot = mat3(1, 0, 0,
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0, cos(u_rotation.x), -sin(u_rotation.x),
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0, sin(u_rotation.x), cos(u_rotation.x));
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mat3 y_rot = mat3(cos(u_rotation.y), 0, sin(u_rotation.y),
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0, 1, 0,
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-sin(u_rotation.y), 0, cos(u_rotation.y));
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mat3 z_rot = mat3(cos(u_rotation.z), -sin(u_rotation.z), 0,
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sin(u_rotation.z), cos(u_rotation.z), 0,
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0, 0, 1);
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vec3 r_position = a_position;
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r_position = mul(r_position, x_rot);
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r_position = mul(r_position, y_rot);
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r_position = mul(r_position, z_rot);
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vec4 scale = mul(u_scale, vec4(r_position, 1.0f));
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vec4 view = mul(u_view, scale);
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vec4 pos = view + u_position;
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gl_Position = mul(u_proj, pos);
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f_position = r_position;
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}
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