32 lines
1.4 KiB
Scala
32 lines
1.4 KiB
Scala
$input v_color0, v_texcoord0
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#include <bgfx_shader.sh>
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SAMPLER2D(s_texColor, 0);
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uniform vec4 u_params;
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#define u_blur_scale u_params.xy
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#define u_compose_mult u_params.z
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#define u_compose_alpha u_params.w
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void main()
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{
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vec4 color;
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color = texture2D(s_texColor, vec2(v_texcoord0.x-4.0*u_blur_scale.x, v_texcoord0.y-4.0*u_blur_scale.y))*0.05;
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color += texture2D(s_texColor, vec2(v_texcoord0.x-3.0*u_blur_scale.x, v_texcoord0.y-3.0*u_blur_scale.y))*0.09;
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color += texture2D(s_texColor, vec2(v_texcoord0.x-2.0*u_blur_scale.x, v_texcoord0.y-2.0*u_blur_scale.y))*0.12;
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color += texture2D(s_texColor, vec2(v_texcoord0.x-1.0*u_blur_scale.x, v_texcoord0.y-1.0*u_blur_scale.y))*0.15;
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color += texture2D(s_texColor, vec2(v_texcoord0.x+0.0*u_blur_scale.x, v_texcoord0.y+0.0*u_blur_scale.y))*0.16;
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color += texture2D(s_texColor, vec2(v_texcoord0.x+1.0*u_blur_scale.x, v_texcoord0.y+1.0*u_blur_scale.y))*0.15;
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color += texture2D(s_texColor, vec2(v_texcoord0.x+2.0*u_blur_scale.x, v_texcoord0.y+2.0*u_blur_scale.y))*0.12;
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color += texture2D(s_texColor, vec2(v_texcoord0.x+3.0*u_blur_scale.x, v_texcoord0.y+3.0*u_blur_scale.y))*0.09;
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color += texture2D(s_texColor, vec2(v_texcoord0.x+4.0*u_blur_scale.x, v_texcoord0.y+4.0*u_blur_scale.y))*0.05;
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gl_FragColor = color
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* vec4(u_compose_mult
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, u_compose_mult
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, u_compose_mult
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, u_compose_mult * u_compose_alpha
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);
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}
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