1 /******************************************************************************* 2 * Copyright 2011 See AUTHORS file. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 ******************************************************************************/ 16 17 package com.badlogic.gdx.tests; 18 19 import com.badlogic.gdx.Gdx; 20 import com.badlogic.gdx.InputMultiplexer; 21 import com.badlogic.gdx.graphics.GL20; 22 import com.badlogic.gdx.graphics.Mesh; 23 import com.badlogic.gdx.graphics.PerspectiveCamera; 24 import com.badlogic.gdx.graphics.Pixmap.Format; 25 import com.badlogic.gdx.graphics.Texture; 26 import com.badlogic.gdx.graphics.Texture.TextureFilter; 27 import com.badlogic.gdx.graphics.VertexAttribute; 28 import com.badlogic.gdx.graphics.VertexAttributes.Usage; 29 import com.badlogic.gdx.graphics.glutils.MipMapGenerator; 30 import com.badlogic.gdx.graphics.glutils.ShaderProgram; 31 import com.badlogic.gdx.scenes.scene2d.Stage; 32 import com.badlogic.gdx.scenes.scene2d.ui.CheckBox; 33 import com.badlogic.gdx.scenes.scene2d.ui.Label; 34 import com.badlogic.gdx.scenes.scene2d.ui.SelectBox; 35 import com.badlogic.gdx.scenes.scene2d.ui.Table; 36 import com.badlogic.gdx.scenes.scene2d.ui.SelectBox.SelectBoxStyle; 37 import com.badlogic.gdx.scenes.scene2d.ui.Skin; 38 import com.badlogic.gdx.tests.utils.GdxTest; 39 import com.badlogic.gdx.tests.utils.PerspectiveCamController; 40 import com.badlogic.gdx.utils.GdxRuntimeException; 41 42 public class MipMapTest extends GdxTest { 43 PerspectiveCamera camera; 44 PerspectiveCamController controller; 45 Mesh mesh; 46 Texture textureHW; 47 Texture textureSW; 48 Texture currTexture; 49 ShaderProgram shader; 50 Stage ui; 51 Skin skin; 52 InputMultiplexer multiplexer; 53 SelectBox<String> minFilter; 54 SelectBox<String> magFilter; 55 CheckBox hwMipMap; 56 57 @Override 58 public void create () { 59 camera = new PerspectiveCamera(67, Gdx.graphics.getWidth(), Gdx.graphics.getHeight()); 60 camera.position.set(0, 1.5f, 1.5f); 61 camera.lookAt(0, 0, 0); 62 camera.update(); 63 controller = new PerspectiveCamController(camera); 64 65 mesh = new Mesh(true, 4, 4, new VertexAttribute(Usage.Position, 3, ShaderProgram.POSITION_ATTRIBUTE), new VertexAttribute( 66 Usage.TextureCoordinates, 2, ShaderProgram.TEXCOORD_ATTRIBUTE)); 67 mesh.setVertices(new float[] {-1, 0, 1, 0, 1, 1, 0, 1, 1, 1, 1, 0, -1, 1, 0, -1, 0, -1, 0, 0,}); 68 mesh.setIndices(new short[] {0, 1, 2, 3}); 69 70 shader = new ShaderProgram(Gdx.files.internal("data/shaders/flattex-vert.glsl").readString(), Gdx.files.internal( 71 "data/shaders/flattex-frag.glsl").readString()); 72 if (!shader.isCompiled()) throw new GdxRuntimeException("shader error: " + shader.getLog()); 73 74 textureHW = new Texture(Gdx.files.internal("data/badlogic.jpg"), Format.RGB565, true); 75 MipMapGenerator.setUseHardwareMipMap(false); 76 textureSW = new Texture(Gdx.files.internal("data/badlogic.jpg"), Format.RGB565, true); 77 currTexture = textureHW; 78 79 createUI(); 80 81 multiplexer = new InputMultiplexer(); 82 Gdx.input.setInputProcessor(multiplexer); 83 multiplexer.addProcessor(ui); 84 multiplexer.addProcessor(controller); 85 } 86 87 private void createUI () { 88 skin = new Skin(Gdx.files.internal("data/uiskin.json")); 89 ui = new Stage(); 90 91 String[] filters = new String[TextureFilter.values().length]; 92 int idx = 0; 93 for (TextureFilter filter : TextureFilter.values()) { 94 filters[idx++] = filter.toString(); 95 } 96 hwMipMap = new CheckBox("Hardware Mips", skin); 97 minFilter = new SelectBox(skin); 98 minFilter.setItems(filters); 99 magFilter = new SelectBox(skin.get(SelectBoxStyle.class)); 100 magFilter.setItems("Nearest", "Linear"); 101 102 Table table = new Table(); 103 table.setSize(ui.getWidth(), 30); 104 table.setY(ui.getHeight() - 30); 105 table.add(hwMipMap).spaceRight(5); 106 table.add(new Label("Min Filter", skin)).spaceRight(5); 107 table.add(minFilter).spaceRight(5); 108 table.add(new Label("Mag Filter", skin)).spaceRight(5); 109 table.add(magFilter); 110 111 ui.addActor(table); 112 } 113 114 @Override 115 public void render () { 116 Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT); 117 Gdx.gl.glEnable(GL20.GL_TEXTURE_2D); 118 119 camera.update(); 120 121 currTexture = hwMipMap.isChecked() ? textureHW : textureSW; 122 currTexture.bind(); 123 currTexture.setFilter(TextureFilter.valueOf(minFilter.getSelected()), TextureFilter.valueOf(magFilter.getSelected())); 124 125 shader.begin(); 126 shader.setUniformMatrix("u_projTrans", camera.combined); 127 shader.setUniformi("s_texture", 0); 128 mesh.render(shader, GL20.GL_TRIANGLE_FAN); 129 shader.end(); 130 131 ui.act(); 132 ui.draw(); 133 } 134 135 @Override 136 public void dispose () { 137 shader.dispose(); 138 textureHW.dispose(); 139 textureSW.dispose(); 140 mesh.dispose(); 141 ui.dispose(); 142 skin.dispose(); 143 } 144 } 145
