20 lines
502 B
GLSL
20 lines
502 B
GLSL
#version 450 core
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layout( location = 0 ) uniform sampler2D u_InputTexture;
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layout( location = 1 ) uniform int u_LOD;
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layout( location = 0 ) out vec4 color;
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void main( void )
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{
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#if 1
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vec2 ts = textureSize( u_InputTexture , u_LOD );
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vec2 tmp = gl_FragCoord.xy / vec2( 1280. , 720. );
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ivec2 pos = ivec2( ts * tmp );
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color = texelFetch( u_InputTexture , pos , u_LOD );
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#else
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vec2 tmp = gl_FragCoord.xy / vec2( 1280. , 720. );
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color = textureLod( u_InputTexture , tmp , float( u_LOD ) );
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#endif
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}
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