Example usage for org.lwjgl.opengl GL11 glDrawElements

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:com.flowpowered.caustic.lwjgl.gl30.GL30VertexArray.java

License:MIT License

@Override
public void draw() {
    checkCreated();/*from   w  w w  . ja v a 2s  .c om*/
    // Bind the vao
    GL30.glBindVertexArray(id);
    // Bind the index buffer
    GL15.glBindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, indicesBufferID);
    // Set the polygon mode
    GL11.glPolygonMode(GL11.GL_FRONT_AND_BACK, polygonMode.getGLConstant());
    // Draw all indices with the provided mode
    GL11.glDrawElements(drawingMode.getGLConstant(), indicesDrawCount, GL11.GL_UNSIGNED_INT,
            indicesOffset * DataType.INT.getByteSize());
    // Unbind the index buffer
    GL15.glBindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, 0);
    // Unbind the vao
    GL30.glBindVertexArray(0);
    // Check for errors
    LWJGLUtil.checkForGLError();
}

From source file:com.github.kajdreef.mazerunnermvn.Object.GameObject.java

/**
 * Render the Object.//from  w w w  . j  a  v  a2  s .com
 */
public void render() {
    FloatBuffer matrix44Buffer = BufferUtils.createFloatBuffer(16);
    modelMatrix.store(matrix44Buffer);
    matrix44Buffer.flip();
    GL20.glUniformMatrix4(ShaderProgram.getMML(), false, matrix44Buffer);

    // Bind the texture
    GL13.glActiveTexture(GL13.GL_TEXTURE0);
    GL11.glBindTexture(GL11.GL_TEXTURE_2D, texId);

    // Bind to the VAO that has all the information about the quad vertices
    GL30.glBindVertexArray(vaoId);
    GL20.glEnableVertexAttribArray(0);
    GL20.glEnableVertexAttribArray(1);
    GL20.glEnableVertexAttribArray(2);

    // Bind to the index VBO that has all the information about the order of the vertices
    GL15.glBindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, vboIndicesId);

    // Draw the vertices
    GL11.glDrawElements(GL11.GL_TRIANGLES, indicesData.length, GL11.GL_UNSIGNED_BYTE, 0);

    // Put everything back to default (deselect)
    GL15.glBindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, 0);
    GL20.glDisableVertexAttribArray(2);
    GL20.glDisableVertexAttribArray(1);
    GL20.glDisableVertexAttribArray(0);
    GL30.glBindVertexArray(0);
}

From source file:com.google.gapid.glviewer.gl.Renderer.java

License:Apache License

/**
 * Draws primitives using the vertex data bound to the given shader, indexed from the
 * given index buffer./*from  www  . j a v a  2s .c o m*/
 */
public static void draw(Shader shader, int primitive, IndexBuffer indices) {
    shader.bind();
    indices.bind();
    GL11.glDrawElements(primitive, indices.count, indices.type, 0);
}

From source file:com.grillecube.client.opengl.GLH.java

public static void glhDrawElements(int glTriangles, int indexCount, int indiceType, long indices) {
    GL11.glDrawElements(glTriangles, indexCount, indiceType, indices);
    theContext.incrementDrawCalls();//  w ww  . j  a  v  a2s.  c o  m
    theContext.increaseVerticesDrawn(indexCount / 3);
}

From source file:com.opengrave.og.base.Renderable3D.java

License:Open Source License

@Override
public void render(Matrix4f matrix, RenderStyle style) {
    dealWithChange();//from w  w w  .  jav a2 s  . co m
    int pID = Resources.loadShader("model.vs", "model.fs").getProgram();
    GL20.glUseProgram(pID);
    int texture = GL20.glGetUniformLocation(pID, "texture");
    int shadow = GL20.glGetUniformLocation(pID, "shadowMap");
    GL20.glUniform1i(texture, 0);
    GL20.glUniform1i(shadow, 1);
    GL30.glBindVertexArray(vao_ID);
    GL20.glEnableVertexAttribArray(0);
    GL20.glEnableVertexAttribArray(1);
    GL20.glEnableVertexAttribArray(2);
    GL20.glBindAttribLocation(pID, 0, "in_Position");
    GL20.glBindAttribLocation(pID, 1, "in_Normal");
    GL20.glBindAttribLocation(pID, 2, "in_TextureCoord");

    Util.checkErr();
    if (matList != null && matList.valid()) {
        matList.bind(pID, GL13.GL_TEXTURE0);
        Util.loadMaterials(matList, pID);

    }
    Util.checkErr();
    getContext().setMatrices(pID, matrix);
    getContext().bindShadowData(GL13.GL_TEXTURE2);
    getContext().bindLights(pID, GL13.GL_TEXTURE3);
    Util.setRenderStyle(pID, style);

    GL15.glBindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, vbo_index_ID);
    GL11.glDrawElements(GL11.GL_TRIANGLES, indexCount, GL11.GL_UNSIGNED_INT, 0);
    GL15.glBindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, 0);
    getContext().unbindLights();
    getContext().unbindShadowData();

    if (matList != null && matList.valid()) {
        matList.unbind();
    }
    Util.checkErr();

    GL20.glDisableVertexAttribArray(0);
    GL20.glDisableVertexAttribArray(1);
    GL20.glDisableVertexAttribArray(2);
    Util.checkErr();

    GL20.glUseProgram(0);
    GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, 0);
    GL30.glBindVertexArray(0);
}

From source file:com.opengrave.og.base.Renderable3D.java

License:Open Source License

@Override
public void renderShadows(Matrix4f matrix, Shadow shadow) {
    dealWithChange();//  w w w.  ja  va  2  s.  c  o  m

    int pID = Resources.loadShader("model.vs", "castshadow.fs").getProgram();
    GL20.glUseProgram(pID);
    GL30.glBindVertexArray(vao_ID);
    GL20.glEnableVertexAttribArray(0);
    GL20.glBindAttribLocation(pID, 0, "in_Position");

    Util.checkErr();
    getContext().setShadowMatrices(pID, matrix, shadow);
    GL15.glBindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, vbo_index_ID);
    GL11.glDrawElements(GL11.GL_TRIANGLES, indexCount, GL11.GL_UNSIGNED_INT, 0);
    GL15.glBindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, 0);
    Util.checkErr();

    GL20.glDisableVertexAttribArray(0);
    Util.checkErr();

    GL20.glUseProgram(0);
    GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, 0);
    GL30.glBindVertexArray(0);
}

From source file:com.opengrave.og.base.Renderable3D.java

License:Open Source License

@Override
public void renderForPicking(Matrix4f matrix, Pickable object) {
    dealWithChange();// www. j a  v a2 s  .co m
    int pID = Resources.loadShader("model.vs", "pickingmodel.fs").getProgram();
    GL20.glUseProgram(pID);
    GL30.glBindVertexArray(vao_ID);
    GL20.glEnableVertexAttribArray(0);
    GL20.glBindAttribLocation(pID, 0, "in_Position");

    Util.checkErr();
    GL15.glBindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, vbo_index_ID);
    getContext().setMatrices(pID, matrix);
    Picking.registerObject(pID, getContext(), object);
    GL11.glDrawElements(GL11.GL_TRIANGLES, indexCount, GL11.GL_UNSIGNED_INT, 0);
    GL15.glBindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, 0);
    Util.checkErr();

    GL20.glDisableVertexAttribArray(0);
    Util.checkErr();

    GL20.glUseProgram(0);
    GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, 0);
    GL30.glBindVertexArray(0);
}

From source file:com.opengrave.og.base.RenderableBoneAnimated.java

License:Open Source License

@Override
public void render(Matrix4f matrix, RenderStyle style) {
    // if (!visible) {
    // return;// www .j ava  2  s . co m
    // }
    GL11.glDisable(GL11.GL_CULL_FACE); // TODO Enable Face Culling, and be
    // absolutely sure that all tris are
    // facing the correct way
    dealWithChange();

    int pID = Resources.loadShader("animmodel.vs", "animmodel.fs").getProgram();
    GL20.glUseProgram(pID);
    int texture = GL20.glGetUniformLocation(pID, "texture");
    int shadow = GL20.glGetUniformLocation(pID, "shadowMap");
    GL20.glUniform1i(texture, 0);
    GL20.glUniform1i(shadow, 1);
    GL30.glBindVertexArray(vao_ID);
    GL20.glBindAttribLocation(pID, 0, "in_Position");
    GL20.glBindAttribLocation(pID, 1, "in_Normal");
    GL20.glBindAttribLocation(pID, 2, "in_TextureCoord");
    GL20.glBindAttribLocation(pID, 3, "in_BoneID");
    GL20.glBindAttribLocation(pID, 4, "in_BoneWeight");

    GL20.glEnableVertexAttribArray(0);
    GL20.glEnableVertexAttribArray(1);
    GL20.glEnableVertexAttribArray(2);
    GL20.glEnableVertexAttribArray(3);
    GL20.glEnableVertexAttribArray(4);
    if (matList != null && matList.valid()) {
        matList.bind(pID, GL13.GL_TEXTURE0);
        Util.loadMaterials(matList, pID);

    }
    setBonesUniform(pID);

    getContext().setMatrices(pID, matrix);
    getContext().bindShadowData(GL13.GL_TEXTURE2);
    getContext().bindLights(pID, GL13.GL_TEXTURE3);
    Util.setRenderStyle(pID, style);
    // GL11.glDrawArrays(GL11.GL_TRIANGLES, 0, vertCount);
    GL15.glBindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, vbo_index_ID);
    GL11.glDrawElements(GL11.GL_TRIANGLES, indexCount, GL11.GL_UNSIGNED_INT, 0);
    GL15.glBindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, 0);
    getContext().unbindLights();
    getContext().unbindShadowData();
    if (matList != null && matList.valid()) {
        matList.unbind();
    }
    GL20.glDisableVertexAttribArray(0);
    GL20.glDisableVertexAttribArray(1);
    GL20.glDisableVertexAttribArray(2);
    GL20.glDisableVertexAttribArray(3);
    GL20.glDisableVertexAttribArray(4);

    GL20.glUseProgram(0);
    GL30.glBindVertexArray(0);

    GL11.glEnable(GL11.GL_CULL_FACE);
}

From source file:com.opengrave.og.base.RenderableBoneAnimated.java

License:Open Source License

@Override
public void renderShadows(Matrix4f matrix, Shadow shadow) {
    // if (!visible) {
    // return;/*  w w  w .j  a v  a 2s . c  o  m*/
    // }
    dealWithChange();

    int pID = Resources.loadShader("animmodel.vs", "animmodel.fs").getProgram();
    GL20.glUseProgram(pID);
    GL30.glBindVertexArray(vao_ID);
    GL20.glBindAttribLocation(pID, 0, "in_Position");
    GL20.glBindAttribLocation(pID, 3, "in_BoneID");
    GL20.glBindAttribLocation(pID, 4, "in_BoneWeight");

    GL20.glEnableVertexAttribArray(0);
    GL20.glEnableVertexAttribArray(3);
    GL20.glEnableVertexAttribArray(4);
    setBonesUniform(pID);
    getContext().setShadowMatrices(pID, matrix, shadow);
    // GL11.glDrawArrays(GL11.GL_TRIANGLES, 0, vertCount);
    GL15.glBindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, vbo_index_ID);
    GL11.glDrawElements(GL11.GL_TRIANGLES, indexCount, GL11.GL_UNSIGNED_INT, 0);
    GL15.glBindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, 0);

    GL20.glDisableVertexAttribArray(0);
    GL20.glDisableVertexAttribArray(3);
    GL20.glDisableVertexAttribArray(4);

    GL20.glUseProgram(0);
    GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, 0);
    GL30.glBindVertexArray(0);

}

From source file:com.opengrave.og.base.RenderableBoneAnimated.java

License:Open Source License

@Override
public void renderForPicking(Matrix4f matrix, Pickable object) {
    dealWithChange();//from w  w w .java2  s .c  o  m

    int pID = Resources.loadShader("animmodel.vs", "pickingmodel.fs").getProgram();
    GL20.glUseProgram(pID);
    GL30.glBindVertexArray(vao_ID);
    GL20.glBindAttribLocation(pID, 0, "in_Position");
    GL20.glBindAttribLocation(pID, 3, "in_BoneID");
    GL20.glBindAttribLocation(pID, 4, "in_BoneWeight");

    GL20.glEnableVertexAttribArray(0);
    GL20.glEnableVertexAttribArray(3);
    GL20.glEnableVertexAttribArray(4);
    setBonesUniform(pID);
    // Util.setShadowMatrices(pID, shadow, location, scale, rotation,
    // matrix);
    Picking.registerObject(pID, getContext(), object);
    getContext().setMatrices(pID, matrix);
    // GL11.glDrawArrays(GL11.GL_TRIANGLES, 0, vertCount);
    GL15.glBindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, vbo_index_ID);
    GL11.glDrawElements(GL11.GL_TRIANGLES, indexCount, GL11.GL_UNSIGNED_INT, 0);
    GL15.glBindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, 0);

    GL20.glDisableVertexAttribArray(0);
    GL20.glDisableVertexAttribArray(3);
    GL20.glDisableVertexAttribArray(4);

    GL20.glUseProgram(0);
    GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, 0);
    GL30.glBindVertexArray(0);

}