mirror of
https://github.com/scratchfoundation/bgfx.git
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42 lines
1.1 KiB
Python
42 lines
1.1 KiB
Python
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$input a_position, a_normal, a_tangent, a_texcoord0, i_data0, i_data1, i_data2, i_data3
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$output v_wpos, v_view, v_normal, v_tangent, v_texcoord0
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/*
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* Copyright 2011-2012 Branimir Karadzic. All rights reserved.
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* License: http://www.opensource.org/licenses/BSD-2-Clause
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*/
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#include "../common/common.sh"
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void main()
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{
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mat4 model;
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model[0] = i_data0;
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model[1] = i_data1;
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model[2] = i_data2;
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model[3] = i_data3;
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vec3 wpos = instMul(model, vec4(a_position, 1.0) ).xyz;
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gl_Position = mul(u_viewProj, vec4(wpos, 1.0) );
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vec3 normal = a_normal * 2.0f - 1.0f;
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vec3 wnormal = instMul(model, vec4(normal, 0.0) ).xyz;
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vec3 tangent = a_tangent * 2.0f - 1.0f;
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vec3 wtangent = instMul(model, vec4(tangent.xyz, 0.0) ).xyz;
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vec3 viewNormal = normalize(mul(u_view, vec4(wnormal, 0.0) ).xyz);
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vec3 viewTangent = normalize(mul(u_view, vec4(wtangent, 0.0) ).xyz);
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mat3 tbn = mat3(viewTangent, cross(viewNormal, viewTangent), viewNormal);
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v_wpos = wpos;
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vec3 view = -mul(u_view, vec4(wpos, 1.0) ).xyz;
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v_view = mul(tbn, view);
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v_normal = viewNormal;
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v_tangent = viewTangent;
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v_texcoord0 = a_texcoord0;
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}
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