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Use this.x, this.y as scrolling offsets when rendering each tile.

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This commit is contained in:
Pete Baron 2016-05-05 16:57:55 +12:00
parent 69abe492cc
commit ef4143136e
1 changed files with 2 additions and 1 deletions
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3
src/pixi/extras/Tilemap.js
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@ -270,7 +270,8 @@ PIXI.Tilemap.prototype._renderTile = function(gl, shader, x, y, tile)
gl.bufferData( gl.ARRAY_BUFFER, this.buffer, gl.STATIC_DRAW );
gl.vertexAttribPointer( shader.aPosition, 4, gl.FLOAT, false, 0, 0 );
gl.uniform2f(shader.uScreenPosition, x, y);
// draw the tile after applying the base coordinates (scrolling offset)
gl.uniform2f(shader.uScreenPosition, x - this.x, y - this.y);
gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4);
};