Example usage for org.lwjgl.opengl GL32 glDrawElementsBaseVertex

Introduction

In this page you can find the example usage for org.lwjgl.opengl GL32 glDrawElementsBaseVertex.

Prototype

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

Source Link

Document

Renders primitives from array data with a per-element offset.

Usage

From source file:me.sunchiro.game.engine.gl.Graphic.java

License:Open Source License

private synchronized void render() {
    GL11.glClearColor(bgColor.x, bgColor.y, bgColor.z, 0);
    GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT);
    GL20.glUseProgram(shader.getPID());//from  w  ww.j a  v a  2s . c  o  m
    //

    GL13.glActiveTexture(GL13.GL_TEXTURE0);
    GL30.glBindVertexArray(vaoId);

    GL20.glEnableVertexAttribArray(0);
    GL20.glEnableVertexAttribArray(1);
    GL20.glEnableVertexAttribArray(2);

    GL11.glBindTexture(GL11.GL_TEXTURE_2D, texManager.getTexture(tid));
    GL15.glBindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, vboiId);
    long offset = 0;
    int shift = 0;
    GL11.glAlphaFunc(GL11.GL_GREATER, 0.4f);
    GL11.glDisable(GL11.GL_CULL_FACE);
    GL11.glEnable(GL11.GL_BLEND);
    GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);

    for (Drawable object : objects) {
        Matrix4f finalMVP = new Matrix4f(mvpMat);
        Matrix4f modelMat = new Matrix4f();
        Matrix4f scaler = new Matrix4f();
        scaler.scale(object.scale * allScale);
        modelMat.translate(object.translation);
        modelMat.rotateXYZ(object.rotation.x, object.rotation.y, object.rotation.z);
        finalMVP.mul(modelMat);
        finalMVP.mul(scaler);
        finalMVP.get(0, matBuff);
        if (object.isChar) {
            GL11.glBindTexture(GL11.GL_TEXTURE_2D, texManager.getTexture(tid_charmap));
        }
        GL20.glUniformMatrix4fv(shader.getMVPLocation(), false, matBuff);
        GL20.glUniform1i(shader.getInverseLocation(), object.inverseAlpha ? 1 : 0);
        if (object.isVisible())
            GL32.glDrawElementsBaseVertex(GL11.GL_TRIANGLES, object.getIndices().length, GL11.GL_UNSIGNED_BYTE,
                    offset, shift);

        offset += object.getIndices().length;
        shift += object.getVertex().length;
        if (object.isChar) {
            GL11.glBindTexture(GL11.GL_TEXTURE_2D, texManager.getTexture(tid));
        }
    }
    render2d(offset, shift);
    GL15.glBindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, 0);
    GL20.glDisableVertexAttribArray(0);
    GL20.glDisableVertexAttribArray(1);
    GL20.glDisableVertexAttribArray(2);
    GL30.glBindVertexArray(0);
    //
    GL20.glUseProgram(0);
    glfwSwapBuffers(window);
    glfwPollEvents();

}

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From source file:me.sunchiro.game.engine.gl.Graphic.java

License:Open Source License

private void render2d(long offset, int shift) {
    cam.getOrthoMVP().get(0, matBuff);//w  w w .  j a  v  a 2  s  .c o m
    GL20.glUniformMatrix4fv(shader.getMVPLocation(), false, matBuff);

    for (Drawable object : orthoObjects) {
        if (object.isChar) {
            GL11.glBindTexture(GL11.GL_TEXTURE_2D, texManager.getTexture(tid_charmap));
        }
        GL20.glUniform1i(shader.getInverseLocation(), object.inverseAlpha ? 1 : 0);
        if (object.isVisible())
            GL32.glDrawElementsBaseVertex(GL11.GL_TRIANGLES, object.getIndices().length, GL11.GL_UNSIGNED_BYTE,
                    offset, shift);
        offset += object.getIndices().length;
        shift += object.getVertex().length;
    }
    // static utility function
}

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From source file:tk.ivybits.engine.gl.GL.java

License:Open Source License

public static void glDrawElementsBaseVertex(int a, int b, int c, long d, int e) {
    GL32.glDrawElementsBaseVertex(a, b, c, d, e);
}

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