mkxp-freebird/shader/tilemap.vert

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uniform mat4 projMat;
uniform vec2 texSizeInv;
uniform vec2 translation;
uniform float aniIndex;
attribute vec2 position;
attribute vec2 texCoord;
varying vec2 v_texCoord;
const float atAreaW = 96.0;
const float atAreaH = 128.0*7.0;
const float atAniOffset = 32.0*3.0;
void main()
{
vec2 tex = texCoord;
if (tex.x <= atAreaW && tex.y <= atAreaH)
tex.x += aniIndex * atAniOffset;
gl_Position = projMat * vec4(position + translation, 0, 1);
v_texCoord = tex * texSizeInv;
}