@Override
public void draw(final GL2 gl, final GLUgl2 glu, final Camera camera) {
if (vendor == Vendor.ERROR) {
return;
}
final int[] values = new int[] {NO_VALUE, NO_VALUE};
// try nvidia first
if (vendor == Vendor.NVIDIA || vendor == Vendor.NONE) {
try {
gl.glGetIntegerv(GL_TOTAL_AVAILABLE_MEM, values, 0);
gl.glGetIntegerv(GL_CURRENT_AVAILABLE_MEM, values, 1);
if (values[1] >= 0) {
vendor = Vendor.NVIDIA;
}
} catch (final GLException ex) {
// failed to get values
DebugUtil.clearGLErrors(gl);
// error will be logged when values are not assigned
values[0] = ERROR_VALUE;
values[1] = ERROR_VALUE;
}
}
// try amd/ati
if (vendor == Vendor.AMD || vendor == Vendor.NONE) {
try {
if (vendor == Vendor.NONE) {
if (gl instanceof WGLExt) {
final WGLExt wgl = (WGLExt) gl;
final int gpuCount = wgl.wglGetGPUIDsAMD(0, null);
final int[] gpuIds = new int[gpuCount];
final IntBuffer totalMem = IntBuffer.allocate(1);
for (int i = 0; i < gpuIds.length; i++) {
wgl.wglGetGPUInfoAMD(
gpuIds[i], WGLExt.WGL_GPU_RAM_AMD, GL2.GL_UNSIGNED_INT, 1, totalMem);
values[0] = Math.max(values[0], totalMem.get(0));
}
}
} else {
synchronized (this) {
values[0] = totalAvailableMem;
}
}
gl.glGetIntegerv(GL2.GL_TEXTURE_FREE_MEMORY_ATI, values, 1);
if (values[1] >= 0) {
vendor = Vendor.AMD;
}
} catch (final GLException ex) {
// failed to get values
DebugUtil.clearGLErrors(gl);
// error will be logged when values are not assigned
values[0] = ERROR_VALUE;
values[1] = ERROR_VALUE;
}
}
// catch errors
if (vendor == Vendor.NONE && values[0] < 0 || values[1] < 0) {
vendor = Vendor.ERROR;
}
synchronized (this) {
totalAvailableMem = values[0];
currentAvailableMem = values[1];
}
}
