30 lines
637 B
Python
30 lines
637 B
Python
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$input a_position, a_texcoord0
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$output v_dir
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/*
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* Copyright 2014-2016 Dario Manesku. All rights reserved.
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* License: https://github.com/bkaradzic/bgfx#license-bsd-2-clause
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*/
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#include "../common/common.sh"
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#include "uniforms.sh"
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uniform mat4 u_mtx;
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void main()
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{
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gl_Position = mul(u_modelViewProj, vec4(a_position, 1.0) );
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float fov = radians(45.0);
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float height = tan(fov*0.5);
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float aspect = height*(u_viewRect.z / u_viewRect.w);
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vec2 tex = (2.0*a_texcoord0-1.0) * vec2(aspect, height);
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mat4 mtx;
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mtx[0] = u_mtx0;
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mtx[1] = u_mtx1;
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mtx[2] = u_mtx2;
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mtx[3] = u_mtx3;
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v_dir = instMul(mtx, vec4(tex, 1.0, 0.0) ).xyz;
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}
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