24 lines
588 B
GLSL
24 lines
588 B
GLSL
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uniform vec4 g_Texture0Resolution;
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attribute vec3 a_Position;
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attribute vec2 a_TexCoord;
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varying vec2 v_TexCoord;
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varying vec4 v_TexCoordLeftTop;
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varying vec4 v_TexCoordRightBottom;
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void main() {
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gl_Position = vec4(a_Position, 1.0);
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v_TexCoord = a_TexCoord.xy;
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vec2 texelSize = CAST2(1.0) / g_Texture0Resolution.xy;
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v_TexCoordLeftTop = v_TexCoord.xyxy;
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v_TexCoordRightBottom = v_TexCoord.xyxy;
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v_TexCoordLeftTop.x -= texelSize.x;
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v_TexCoordLeftTop.w += texelSize.y;
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v_TexCoordRightBottom.x += texelSize.x;
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v_TexCoordRightBottom.w -= texelSize.y;
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}
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