// ClipSpace
import { glsl } from '@luma.gl/core';
import { Model } from "../model/model.js";
import { Geometry } from "../geometry/geometry.js";
const CLIPSPACE_VERTEX_SHADER = `\
#version 300 es
in vec2 aClipSpacePosition;
in vec2 aTexCoord;
in vec2 aCoordinate;
out vec2 position;
out vec2 coordinate;
out vec2 uv;
void main(void) {
gl_Position = vec4(aClipSpacePosition, 0., 1.);
position = aClipSpacePosition;
coordinate = aCoordinate;
uv = aTexCoord;
}
`;
/* eslint-disable indent, no-multi-spaces */
const POSITIONS = [-1, -1, 1, -1, -1, 1, 1, 1];
/**
 * A flat geometry that covers the "visible area" that the GPU renders.
 */
export class ClipSpace extends Model {
    constructor(device, opts) {
        const TEX_COORDS = POSITIONS.map(coord => (coord === -1 ? 0 : coord));
        super(device, {
            ...opts,
            vs: CLIPSPACE_VERTEX_SHADER,
            vertexCount: 4,
            geometry: new Geometry({
                topology: 'triangle-strip',
                vertexCount: 4,
                attributes: {
                    aClipSpacePosition: { size: 2, value: new Float32Array(POSITIONS) },
                    aTexCoord: { size: 2, value: new Float32Array(TEX_COORDS) },
                    aCoordinate: { size: 2, value: new Float32Array(TEX_COORDS) }
                }
            })
        });
    }
}