protot/3rdparty/bgfx/tools/texturev/fs_texture_cube.sc

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2016-08-29 22:31:11 +02:00
$input v_texcoord0, v_color0
/*
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* Copyright 2011-2017 Branimir Karadzic. All rights reserved.
* License: https://github.com/bkaradzic/bgfx#license-bsd-2-clause
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*/
#include <bgfx_shader.sh>
SAMPLERCUBE(s_texColor, 0);
uniform mat4 u_mtx;
uniform vec4 u_params;
#define u_textureLod u_params.x
void main()
{
vec3 dir = vec3( (v_texcoord0*2.0 - 1.0) * vec2(1.0, -1.0), 1.0);
dir = normalize(mul(u_mtx, vec4(dir, 0.0) ).xyz);
gl_FragColor = textureCubeLod(s_texColor, dir, u_textureLod) * v_color0;
}