Examples with VertexAttribute com.badlogic.gdx.graphics.VertexAttribute used on opensource projects

Example 11 with VertexAttribute

use of com.badlogic.gdx.graphics.VertexAttribute in project libgdx by libgdx.

the class ImmediateModeRenderer20 method buildVertexAttributes.

private VertexAttribute[] buildVertexAttributes(boolean hasNormals, boolean hasColor, int numTexCoords) {
    Array<VertexAttribute> attribs = new Array<VertexAttribute>();
    attribs.add(new VertexAttribute(Usage.Position, 3, ShaderProgram.POSITION_ATTRIBUTE));
    if (hasNormals)
        attribs.add(new VertexAttribute(Usage.Normal, 3, ShaderProgram.NORMAL_ATTRIBUTE));
    if (hasColor)
        attribs.add(new VertexAttribute(Usage.ColorPacked, 4, ShaderProgram.COLOR_ATTRIBUTE));
    for (int i = 0; i < numTexCoords; i++) {
        attribs.add(new VertexAttribute(Usage.TextureCoordinates, 2, ShaderProgram.TEXCOORD_ATTRIBUTE + i));
    }
    VertexAttribute[] array = new VertexAttribute[attribs.size];
    for (int i = 0; i < attribs.size; i++) array[i] = attribs.get(i);
    return array;
}

Example 12 with VertexAttribute

use of com.badlogic.gdx.graphics.VertexAttribute in project libgdx by libgdx.

the class MeshShaderTest method create.

@Override
public void create() {
    String vertexShader = "attribute vec4 a_position;    \n" + "attribute vec4 a_color;\n" + "attribute vec2 a_texCoord0;\n" + "uniform mat4 u_worldView;\n" + "varying vec4 v_color;" + "varying vec2 v_texCoords;" + "void main()                  \n" + "{                            \n" + "   v_color = vec4(1, 1, 1, 1); \n" + "   v_texCoords = a_texCoord0; \n" + "   gl_Position =  u_worldView * a_position;  \n" + "}                            \n";
    String fragmentShader = "#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" + "void main()                                  \n" + "{                                            \n" + "  gl_FragColor = v_color * texture2D(u_texture, v_texCoords);\n" + "}";
    shader = new ShaderProgram(vertexShader, fragmentShader);
    if (shader.isCompiled() == false) {
        Gdx.app.log("ShaderTest", shader.getLog());
        Gdx.app.exit();
    }
    mesh = new Mesh(true, 4, 6, VertexAttribute.Position(), VertexAttribute.ColorUnpacked(), VertexAttribute.TexCoords(0));
    mesh.setVertices(new float[] { -0.5f, -0.5f, 0, 1, 1, 1, 1, 0, 1, 0.5f, -0.5f, 0, 1, 1, 1, 1, 1, 1, 0.5f, 0.5f, 0, 1, 1, 1, 1, 1, 0, -0.5f, 0.5f, 0, 1, 1, 1, 1, 0, 0 });
    mesh.setIndices(new short[] { 0, 1, 2, 2, 3, 0 });
    //Mesh with texCoords wearing a pair of shorts. :)
    meshCustomVA = new Mesh(true, 4, 6, VertexAttribute.Position(), VertexAttribute.ColorPacked(), new VertexAttribute(Usage.TextureCoordinates, 2, GL20.GL_UNSIGNED_SHORT, true, ShaderProgram.TEXCOORD_ATTRIBUTE + "0", 0));
    meshCustomVA.setVertices(new float[] { -0.5f, -0.5f, 0, FLOAT_WHITE, toSingleFloat(0, 1), 0.5f, -0.5f, 0, FLOAT_WHITE, toSingleFloat(1, 1), 0.5f, 0.5f, 0, FLOAT_WHITE, toSingleFloat(1, 0), -0.5f, 0.5f, 0, FLOAT_WHITE, toSingleFloat(0, 0) });
    meshCustomVA.setIndices(new short[] { 0, 1, 2, 2, 3, 0 });
    texture = new Texture(Gdx.files.internal("data/bobrgb888-32x32.png"));
}

Example 13 with VertexAttribute

use of com.badlogic.gdx.graphics.VertexAttribute in project libgdx by libgdx.

the class MipMapTest method create.

@Override
public void create() {
    camera = new PerspectiveCamera(67, Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
    camera.position.set(0, 1.5f, 1.5f);
    camera.lookAt(0, 0, 0);
    camera.update();
    controller = new PerspectiveCamController(camera);
    mesh = new Mesh(true, 4, 4, new VertexAttribute(Usage.Position, 3, ShaderProgram.POSITION_ATTRIBUTE), new VertexAttribute(Usage.TextureCoordinates, 2, ShaderProgram.TEXCOORD_ATTRIBUTE));
    mesh.setVertices(new float[] { -1, 0, 1, 0, 1, 1, 0, 1, 1, 1, 1, 0, -1, 1, 0, -1, 0, -1, 0, 0 });
    mesh.setIndices(new short[] { 0, 1, 2, 3 });
    shader = new ShaderProgram(Gdx.files.internal("data/shaders/flattex-vert.glsl").readString(), Gdx.files.internal("data/shaders/flattex-frag.glsl").readString());
    if (!shader.isCompiled())
        throw new GdxRuntimeException("shader error: " + shader.getLog());
    textureHW = new Texture(Gdx.files.internal("data/badlogic.jpg"), Format.RGB565, true);
    MipMapGenerator.setUseHardwareMipMap(false);
    textureSW = new Texture(Gdx.files.internal("data/badlogic.jpg"), Format.RGB565, true);
    currTexture = textureHW;
    createUI();
    multiplexer = new InputMultiplexer();
    Gdx.input.setInputProcessor(multiplexer);
    multiplexer.addProcessor(ui);
    multiplexer.addProcessor(controller);
}

Example 14 with VertexAttribute

use of com.badlogic.gdx.graphics.VertexAttribute in project commons-gdx by gemserk.

the class MeshUtils method changeColors.

/**
	 * Sets the colors of the vertices of the mesh.
	 * 
	 * @param mesh
	 *            The Mesh to be modified.
	 * @param colors
	 *            The new vertex colors.
	 * @param verticesCache
	 *            An array to contain all the vertices of the mesh size should be (mesh.getNumVertices()*mesh.getVertexSize()/4). This is to avoid GC
	 */
public static Mesh changeColors(Mesh mesh, float[] colors, float[] verticesCache) {
    VertexAttribute posAttr = mesh.getVertexAttribute(Usage.ColorPacked);
    int offset = posAttr.offset / 4;
    int numVertices = mesh.getNumVertices();
    int vertexSize = mesh.getVertexSize() / 4;
    mesh.getVertices(verticesCache);
    int idx = offset;
    for (int i = 0; i < numVertices; i++) {
        verticesCache[idx] = colors[i];
        idx += vertexSize;
    }
    mesh.setVertices(verticesCache);
    return mesh;
}

Example 15 with VertexAttribute

use of com.badlogic.gdx.graphics.VertexAttribute in project commons-gdx by gemserk.

the class MeshUtils method translate.

/**
	 * Translates the Mesh the specified x and y coordinates.
	 * 
	 * @param mesh
	 *            The Mesh to be modified.
	 * @param x
	 *            The x coordinate to be translated.
	 * @param y
	 *            The y coordinate to be translated.
	 */
public static Mesh translate(Mesh mesh, float x, float y) {
    VertexAttribute posAttr = mesh.getVertexAttribute(Usage.Position);
    int offset = posAttr.offset / 4;
    int numVertices = mesh.getNumVertices();
    int vertexSize = mesh.getVertexSize() / 4;
    float[] vertices = new float[numVertices * vertexSize];
    mesh.getVertices(vertices);
    int idx = offset;
    for (int i = 0; i < numVertices; i++) {
        vertices[idx] += x;
        vertices[idx + 1] += y;
        idx += vertexSize;
    }
    mesh.setVertices(vertices);
    return mesh;
}