private boolean initVertexBuffer(GL4 gl4) {
gl4.glGenBuffers(Buffer.MAX.ordinal(), bufferName, 0);
gl4.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, bufferName[Buffer.ELEMENT.ordinal()]);
ShortBuffer elementBuffer = GLBuffers.newDirectShortBuffer(elementData);
gl4.glBufferData(GL_ELEMENT_ARRAY_BUFFER, elementSize, elementBuffer, GL_STATIC_DRAW);
gl4.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
gl4.glBindBuffer(GL_ARRAY_BUFFER, bufferName[Buffer.F64.ordinal()]);
DoubleBuffer positionBuffer = GLBuffers.newDirectDoubleBuffer(positionData);
gl4.glBufferData(GL_ARRAY_BUFFER, positionSize, positionBuffer, GL_STATIC_DRAW);
gl4.glBindBuffer(GL_ARRAY_BUFFER, 0);
return checkError(gl4, "initArrayBuffer");
}
@Override
protected boolean render(GL gl) {
GL4 gl4 = (GL4) gl;
FloatUtil.makePerspective(
projection,
0,
true,
(float) Math.PI * 0.25f,
(float) windowSize.x / windowSize.y,
0.1f,
100.0f);
view = view();
FloatUtil.makeIdentity(model);
FloatUtil.multMatrix(projection, view);
FloatUtil.multMatrix(projection, model);
for (int i = 0; i < projection.length; i++) {
mvp[i] = projection[i];
}
gl4.glProgramUniformMatrix4dv(
programName[Program.VERT.ordinal()], uniformMvp, 1, false, mvp, 0);
gl4.glProgramUniform4dv(
programName[Program.FRAG.ordinal()],
uniformDiffuse,
1,
new double[] {1.0f, 0.5f, 0.0f, 1.0f},
0);
gl4.glViewportIndexedfv(0, new float[] {0, 0, windowSize.x, windowSize.y}, 0);
gl4.glClearBufferfv(GL_COLOR, 0, new float[] {0.0f, 0.0f, 0.0f, 0.0f}, 0);
gl4.glBindProgramPipeline(pipelineName[0]);
gl4.glBindVertexArray(vertexArrayName[0]);
gl4.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, bufferName[Buffer.ELEMENT.ordinal()]);
gl4.glDrawElementsInstancedBaseVertex(GL_TRIANGLES, elementCount, GL_UNSIGNED_SHORT, 0, 1, 0);
return true;
}