/****************************************************************************** * Spine Runtime Software License - Version 1.1 * * Copyright (c) 2013, Esoteric Software * All rights reserved. * * Redistribution and use in source and binary forms in whole or in part, with * or without modification, are permitted provided that the following conditions * are met: * * 1. A Spine Essential, Professional, Enterprise, or Education License must * be purchased from Esoteric Software and the license must remain valid: * http://esotericsoftware.com/ * 2. Redistributions of source code must retain this license, which is the * above copyright notice, this declaration of conditions and the following * disclaimer. * 3. Redistributions in binary form must reproduce this license, which is the * above copyright notice, this declaration of conditions and the following * disclaimer, in the documentation and/or other materials provided with the * distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *****************************************************************************/ package com.esotericsoftware.spine; import com.badlogic.gdx.ApplicationAdapter; import com.badlogic.gdx.Gdx; import com.badlogic.gdx.backends.lwjgl.LwjglApplication; import com.badlogic.gdx.backends.lwjgl.LwjglApplicationConfiguration; import com.badlogic.gdx.graphics.Color; import com.badlogic.gdx.graphics.GL10; import com.badlogic.gdx.graphics.Texture; import com.badlogic.gdx.graphics.g2d.SpriteBatch; import com.badlogic.gdx.graphics.g2d.TextureAtlas; import com.badlogic.gdx.graphics.glutils.ShaderProgram; import com.badlogic.gdx.math.Vector2; import com.badlogic.gdx.math.Vector3; public class NormalMapTest extends ApplicationAdapter { SpriteBatch batch; float time; SkeletonRenderer renderer; Texture atlasTexture, normalMapTexture; ShaderProgram program; SkeletonData skeletonData; Skeleton skeleton; Animation animation; final Vector3 ambientColor = new Vector3(1, 1, 1); final Vector3 lightColor = new Vector3(1, 0.7f, 0.6f); final Vector3 lightPosition = new Vector3(0, 0, 0.07f); final Vector2 resolution = new Vector2(); final Vector3 attenuation = new Vector3(0.4f, 3.0f, 5); float ambientIntensity = 0.35f; float strength = 1.0f; boolean useShadow = true; boolean useNormals = true; boolean flipY = false; public void create () { program = createShader(); batch = new SpriteBatch(); batch.setShader(program); renderer = new SkeletonRenderer(); TextureAtlas atlas = new TextureAtlas(Gdx.files.internal("spineboy-ws.atlas")); atlasTexture = atlas.getRegions().first().getTexture(); normalMapTexture = new Texture(Gdx.files.internal("spineboy-normal.png")); SkeletonJson json = new SkeletonJson(atlas); // json.setScale(2); skeletonData = json.readSkeletonData(Gdx.files.internal("spineboy.json")); animation = skeletonData.findAnimation("walk"); skeleton = new Skeleton(skeletonData); skeleton.setToSetupPose(); skeleton = new Skeleton(skeleton); skeleton.setX(200); skeleton.setY(100); skeleton.updateWorldTransform(); } public void render () { float lastTime = time; time += Gdx.graphics.getDeltaTime(); animation.apply(skeleton, lastTime, time, true, null); skeleton.updateWorldTransform(); skeleton.update(Gdx.graphics.getDeltaTime()); lightPosition.x = Gdx.input.getX(); lightPosition.y = (Gdx.graphics.getHeight() - Gdx.input.getY()); Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT); batch.begin(); program.setUniformf("ambientIntensity", ambientIntensity); program.setUniformf("attenuation", attenuation); program.setUniformf("light", lightPosition); program.setUniformi("useNormals", useNormals ? 1 : 0); program.setUniformi("useShadow", useShadow ? 1 : 0); program.setUniformf("strength", strength); normalMapTexture.bind(1); atlasTexture.bind(0); renderer.draw(batch, skeleton); batch.end(); } public void resize (int width, int height) { batch.getProjectionMatrix().setToOrtho2D(0, 0, width, height); } private ShaderProgram createShader () { String vert = "attribute vec4 a_position;\n" // + "attribute vec4 a_color;\n" // + "attribute vec2 a_texCoord0;\n" // + "uniform mat4 u_proj;\n" // + "uniform mat4 u_trans;\n" // + "uniform mat4 u_projTrans;\n" // + "varying vec4 v_color;\n" // + "varying vec2 v_texCoords;\n" // + "\n" // + "void main()\n" // + "{\n" // + " v_color = a_color;\n" // + " v_texCoords = a_texCoord0;\n" // + " gl_Position = u_projTrans * a_position;\n" // + "}\n" // + ""; String frag = "#ifdef GL_ES\n" // + "precision mediump float;\n" // + "#endif\n" // + "varying vec4 v_color;\n" // + "varying vec2 v_texCoords;\n" // + "uniform sampler2D u_texture;\n" // + "uniform sampler2D u_normals;\n" // + "uniform vec3 light;\n" // + "uniform vec3 ambientColor;\n" // + "uniform float ambientIntensity; \n" // + "uniform vec2 resolution;\n" // + "uniform vec3 lightColor;\n" // + "uniform bool useNormals;\n" // + "uniform bool useShadow;\n" // + "uniform vec3 attenuation;\n" // + "uniform float strength;\n" // + "uniform bool yInvert;\n" // + "\n" // + "void main() {\n" // + " // sample color & normals from our textures\n" // + " vec4 color = texture2D(u_texture, v_texCoords.st);\n" // + " vec3 nColor = texture2D(u_normals, v_texCoords.st).rgb;\n" // + "\n" // + " // some bump map programs will need the Y value flipped..\n" // + " nColor.g = yInvert ? 1.0 - nColor.g : nColor.g;\n" // + "\n" // + " // this is for debugging purposes, allowing us to lower the intensity of our bump map\n" // + " vec3 nBase = vec3(0.5, 0.5, 1.0);\n" // + " nColor = mix(nBase, nColor, strength);\n" // + "\n" // + " // normals need to be converted to [-1.0, 1.0] range and normalized\n" // + " vec3 normal = normalize(nColor * 2.0 - 1.0);\n" // + "\n" // + " // here we do a simple distance calculation\n" // + " vec3 deltaPos = vec3( (light.xy - gl_FragCoord.xy) / resolution.xy, light.z );\n" // + "\n" // + " vec3 lightDir = normalize(deltaPos);\n" // + " float lambert = useNormals ? clamp(dot(normal, lightDir), 0.0, 1.0) : 1.0;\n" // + " \n" // + " // now let's get a nice little falloff\n" // + " float d = sqrt(dot(deltaPos, deltaPos)); \n" // + " float att = useShadow ? 1.0 / ( attenuation.x + (attenuation.y*d) + (attenuation.z*d*d) ) : 1.0;\n" // + " \n" // + " vec3 result = (ambientColor * ambientIntensity) + (lightColor.rgb * lambert) * att;\n" // + " result *= color.rgb;\n" // + " \n" // + " gl_FragColor = v_color * vec4(result, color.a);\n" // + "}"; System.out.println("VERTEX PROGRAM:\n------------\n\n" + vert); System.out.println("FRAGMENT PROGRAM:\n------------\n\n" + frag); ShaderProgram program = new ShaderProgram(vert, frag); ShaderProgram.pedantic = false; if (!program.isCompiled()) throw new IllegalArgumentException("Error compiling shader: " + program.getLog()); resolution.set(Gdx.graphics.getWidth(), Gdx.graphics.getHeight()); program.begin(); program.setUniformi("u_texture", 0); program.setUniformi("u_normals", 1); program.setUniformf("light", lightPosition); program.setUniformf("strength", strength); program.setUniformf("ambientIntensity", ambientIntensity); program.setUniformf("ambientColor", ambientColor); program.setUniformf("resolution", resolution); program.setUniformf("lightColor", lightColor); program.setUniformf("attenuation", attenuation); program.setUniformi("useShadow", useShadow ? 1 : 0); program.setUniformi("useNormals", useNormals ? 1 : 0); program.setUniformi("yInvert", flipY ? 1 : 0); program.end(); return program; } public static void main (String[] args) throws Exception { LwjglApplicationConfiguration config = new LwjglApplicationConfiguration(); config.useGL20 = true; new LwjglApplication(new NormalMapTest(), config); } }