Example usage for org.lwjgl.opengl GL11 glDrawElements

List of usage examples for org.lwjgl.opengl GL11 glDrawElements

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Introduction

In this page you can find the example usage for org.lwjgl.opengl GL11 glDrawElements.

Prototype

public static void glDrawElements(@NativeType("GLenum") int mode, @NativeType("GLsizei") int count,
        @NativeType("GLenum") int type, @NativeType("void const *") long indices)

Source Link

Document

Constructs a sequence of geometric primitives by successively transferring elements for count vertices to the GL.

Usage

From source file:cuchaz.jfxgl.prism.TexturedQuad.java

License:Open Source License

public void render() {

    // bind stuff
    shader.bind();//from   w w  w .j  a  v a 2  s . co m
    GL30.glBindVertexArray(vaoId);
    GL13.glActiveTexture(GL13.GL_TEXTURE0);
    GL11.glBindTexture(GL11.GL_TEXTURE_2D, texId);

    // draw it!
    GL11.glDrawElements(GL11.GL_TRIANGLES, 6, GL11.GL_UNSIGNED_BYTE, 0);

    // unbind things
    GL30.glBindVertexArray(0);
    GL11.glBindTexture(GL11.GL_TEXTURE_2D, 0);
}

From source file:de.codesourcery.flocking.LWJGLRenderer.java

License:Apache License

private void renderWorld(World world) {
    final double modelMax = world.getSimulationParameters().modelMax;
    xInc = Display.getWidth() / modelMax;
    yInc = Display.getHeight() / modelMax;

    GL11.glEnable(GL11.GL_DEPTH_TEST);//from  w  w w. j av  a 2 s  .  c  o  m
    GL11.glDepthMask(true);

    GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT);

    GL11.glDisable(GL11.GL_DEPTH_TEST);
    GL11.glDepthMask(false);

    GL11.glColor3f(0.5f, 0.5f, 1.0f);

    GL11.glEnableClientState(GL11.GL_VERTEX_ARRAY);

    final int triangleCount = world.getPopulationCount();

    // setup vertex data       
    final int vertexArrayLen = triangleCount * 3 * 2; // one triangle = 3 vertices * 2 int's per vertex
    final MyIntBuffer vertexBuffer = getVertexBuffer(vertexArrayLen);

    final IntBuffer vertexIntBuffer = vertexBuffer.getBuffer();
    final IBoidVisitor visitor = new IBoidVisitor() {

        @Override
        public void visit(Boid boid) {
            drawBoid(boid, vertexIntBuffer);
        }
    };
    world.visitAllBoids(visitor);

    vertexBuffer.rewind();

    GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, vertexBuffer.getHandle());
    GL15.glBufferData(GL15.GL_ARRAY_BUFFER, vertexBuffer.getBuffer(), GL15.GL_DYNAMIC_DRAW);
    GL11.glVertexPointer(2, GL11.GL_INT, 0, 0);

    // setup index data
    MyIntBuffer indexBuffer = getIndexBuffer(triangleCount * 3);
    GL15.glBindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, indexBuffer.getHandle());
    GL15.glBufferData(GL15.GL_ELEMENT_ARRAY_BUFFER, indexBuffer.getBuffer(), GL15.GL_STATIC_DRAW);

    GL11.glDrawElements(GL11.GL_TRIANGLES, triangleCount * 3, GL11.GL_UNSIGNED_INT, 0);

    GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, 0);
    GL15.glBindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, 0);

    GL11.glDisableClientState(GL11.GL_VERTEX_ARRAY);

    GL11.glEnable(GL11.GL_DEPTH_TEST);
    GL11.glDepthMask(true);
}

From source file:de.ikosa.mars.viewer.glviewer.engine.GLSSQScene.java

License:Open Source License

public void Pass(GLScene.PassType passType) {
    ssqMesh.use();//from www . j a v  a  2  s .  c  om
    for (int m = 0; m < ssqMesh.getSubMeshCount(); m++) {
        GLSubMesh subMesh = ssqMesh.getSubMesh(m);
        GLMaterial ssqMaterial = subMesh.getMaterial();
        GLShader ssqShader = ssqMaterial.preparePass(passType, GLScene.DrawModifier.None);
        if (ssqShader != null) {
            GL15.glBindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, subMesh.getIndexVboId());
            GL11.glDrawElements(GL11.GL_TRIANGLES, subMesh.getIndexCount(), GL11.GL_UNSIGNED_INT, 0);
        }
    }
}

From source file:de.ikosa.mars.viewer.glviewer.engine.GLSubMesh.java

License:Open Source License

public void draw() {
    GL11.glDrawElements(GL11.GL_TRIANGLES, indexCount, GL11.GL_UNSIGNED_INT, 0);
}

From source file:engine.render.TexturedQuad.java

public void renderQuad() {

    int shaderID = shader.getProgramID();
    GL20.glUseProgram(shaderID);/*from w ww  .  j a  v  a2s . com*/
    glEnable(GL_BLEND);
    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);

    GL13.glActiveTexture(GL13.GL_TEXTURE0);
    GL11.glBindTexture(GL11.GL_TEXTURE_2D, tex.getTextureID());

    GL30.glBindVertexArray(vaoId);
    GL20.glEnableVertexAttribArray(0);
    GL20.glEnableVertexAttribArray(1);
    GL20.glEnableVertexAttribArray(2);

    GL15.glBindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, vboiId);
    glUniform2f(glGetUniformLocation(shaderID, "scale"), scale.x, scale.y);
    glUniform2f(glGetUniformLocation(shaderID, "translation"), translation.x, translation.y);
    glUniform2f(glGetUniformLocation(shaderID, "cameraOffset"), cameraOffset.x, cameraOffset.y);
    glUniform1f(glGetUniformLocation(shaderID, "rotation"), rotation);
    glUniform2f(glGetUniformLocation(shaderID, "resolution"), resolution.x, resolution.y);

    GL11.glDrawElements(GL11.GL_TRIANGLES, indicesCount, GL11.GL_UNSIGNED_BYTE, 0);

    GL15.glBindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, 0);
    GL20.glDisableVertexAttribArray(0);
    GL20.glDisableVertexAttribArray(1);
    GL20.glDisableVertexAttribArray(2);
    GL30.glBindVertexArray(0);
    glDisable(GL_BLEND);
    GL20.glUseProgram(0);
}

From source file:eu.over9000.veya.rendering.ChunkVAO.java

License:Open Source License

public void render(final boolean solid) {

    try {/* w  w  w.  j  a  v  a 2s .com*/
        if (solid) {
            if (holdsSolid) {
                GL30.glBindVertexArray(this.vao_handle_solid);
                if (Veya.wireframeSwitch) {
                    GL11.glDrawElements(GL11.GL_LINE_STRIP, this.index_length_solid, GL11.GL_UNSIGNED_INT, 0);
                } else {
                    GL11.glDrawElements(GL11.GL_TRIANGLE_STRIP, this.index_length_solid, GL11.GL_UNSIGNED_INT,
                            0);
                }
                GL30.glBindVertexArray(0);
            }
        } else {
            if (holdsTransparent) {
                GL30.glBindVertexArray(this.vao_handle_transparent);
                if (Veya.wireframeSwitch) {
                    GL11.glDrawElements(GL11.GL_LINE_STRIP, this.index_length_transparent, GL11.GL_UNSIGNED_INT,
                            0);
                } else {
                    GL11.glDrawElements(GL11.GL_TRIANGLE_STRIP, this.index_length_transparent,
                            GL11.GL_UNSIGNED_INT, 0);
                }
                GL30.glBindVertexArray(0);
            }
        }
    } catch (final OpenGLException e) {
        System.out.println("vao_handle_solid: " + this.vao_handle_solid);
        e.printStackTrace();
    }

}

From source file:fr.guillaume.prive.viper.core.graphic.GraphicMotor.java

public static void draw() {
    GraphicMotor.checkInstance();/*from   ww w .  ja v  a2s.c o  m*/

    GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT);
    GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
    GL20.glUseProgram(instance.shipShaderId);

    GL20.glUniform1i(instance.useTextureLocation, instance.drawPolygonFrame ? 0 : 1);
    int drawStyle = instance.drawPolygonFrame ? GL11.GL_LINE_LOOP : GL11.GL_TRIANGLES;

    GL13.glActiveTexture(GL13.GL_TEXTURE0);
    GL11.glBindTexture(GL11.GL_TEXTURE_2D, instance.shipTextureId);
    GL30.glBindVertexArray(instance.shipVaoId);
    GL20.glEnableVertexAttribArray(0);
    GL20.glEnableVertexAttribArray(1);
    GL20.glEnableVertexAttribArray(2);
    GL20.glEnableVertexAttribArray(3);
    GL15.glBindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, instance.shipVboiId);
    GL11.glDrawElements(drawStyle, instance.shipVboiLenght, GL11.GL_UNSIGNED_INT, 0);

    GL20.glDisableVertexAttribArray(0);
    GL20.glDisableVertexAttribArray(1);
    GL20.glDisableVertexAttribArray(2);
    GL20.glDisableVertexAttribArray(3);
    GL15.glBindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, 0);
    GL30.glBindVertexArray(0);
    GL20.glUseProgram(0);
}

From source file:fr.ign.cogit.geoxygene.appli.render.DisplayableRenderer.java

License:Open Source License

/**
 * do a GL draw call for all complex meshes
 * /*from  w  w w  .j  a v  a 2 s  .  co m*/
 * @param primitive
 *            primitive to render
 */
protected final static void drawComplex(GLComplex primitive) {
    RenderingStatistics.drawGLComplex(primitive);
    for (GLMesh mesh : primitive.getMeshes()) {
        RenderingStatistics.doDrawCall();
        GL11.glDrawElements(mesh.getGlType(), mesh.getLastIndex() - mesh.getFirstIndex() + 1,
                GL11.GL_UNSIGNED_INT, mesh.getFirstIndex() * (Integer.SIZE / 8));
    }
}

From source file:fr.ign.cogit.geoxygene.appli.render.LwjglLayerRenderer.java

License:Open Source License

/**
 * Perform an OpenGL drawcall on a primitive and render it in the active
 * FrameBuffer. Any preloaded glprogram will be applied. <b>THIS METHOD
 * SHOULD NOT BE HERE!<b>/*from  w  w  w  .  j a  va 2s.  c  om*/
 * 
 * @param primitive
 *            primitive to render
 */
// XXX THIS METHOD SHOULD NOT BE HERE!
public static void drawComplex(GLComplex primitive) {

    RenderingStatistics.drawGLComplex(primitive);
    for (GLMesh mesh : primitive.getMeshes()) {
        RenderingStatistics.doDrawCall();
        GL11.glDrawElements(mesh.getGlType(), mesh.getLastIndex() - mesh.getFirstIndex() + 1,
                GL11.GL_UNSIGNED_INT, mesh.getFirstIndex() * (Integer.SIZE / 8));
    }
}

From source file:game.entity.lwjgl.EntityRenderer.java

/**
 * Renders a batch of entities with a single textured model.
 *
 * @param entityBatch A map entry containing a textured model (key) and a
 * list of entities (value).//from  ww w .  j av a  2 s . com
 */
public void renderBatch(Entry<TexturedModel, List<Entity>> entityBatch) {
    this.prepareTexturedModel(entityBatch.getKey());

    entityBatch.getValue().stream().forEach(x -> {
        this.loadModelMatrix(x);
        GL11.glDrawElements(GL11.GL_TRIANGLES, x.getModel().getRawModel().getVertexCount(),
                GL11.GL_UNSIGNED_INT, 0);
    });

    this.unbindTexturedModel(entityBatch.getKey());
}