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