18 lines
437 B
GLSL
18 lines
437 B
GLSL
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attribute vec3 a_Position;
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attribute vec2 a_TexCoord;
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varying vec2 v_TexCoord[4];
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uniform vec4 g_Texture0Resolution;
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void main() {
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gl_Position = vec4(a_Position, 1.0);
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vec2 offsets = 1.0 / g_Texture0Resolution.xy;
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v_TexCoord[0] = a_TexCoord - offsets;
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v_TexCoord[1] = a_TexCoord + vec2(offsets.x, -offsets.y);
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v_TexCoord[2] = a_TexCoord + vec2(-offsets.x, offsets.y);
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v_TexCoord[3] = a_TexCoord + offsets;
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}
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