/*
 * Super Resolution
 * Copyright (c) 2025. 187J3X1-114514
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

package io.homo.superresolution.core.graphics.opengl.shader;

import io.homo.superresolution.core.RenderSystems;
import io.homo.superresolution.core.graphics.impl.shader.ShaderDescription;
import io.homo.superresolution.core.graphics.impl.shader.ShaderSource;
import io.homo.superresolution.core.graphics.impl.shader.ShaderType;

public class GlBlitShader {
    private static GlShaderProgram shaderCache;

    public static GlShaderProgram getShader() {
        if (shaderCache == null) {
            shaderCache = RenderSystems.current().device().createShaderProgram(
                    ShaderDescription.create()
                            .fragment(new ShaderSource(ShaderType.Fragment, "/shader/blit.frag.glsl", true))
                            .vertex(new ShaderSource(ShaderType.Vertex, "/shader/blit.vert.glsl", true))
                            .uniformSamplerTexture("uTexture", 0)
                            .build());
            shaderCache.compile();

        }
        return shaderCache;
    }
}