public static void apply(final JoglRenderer renderer, final TextureState state) {
final GL gl = GLContext.getCurrentGL();
// ask for the current state record
final RenderContext context = ContextManager.getCurrentContext();
final ContextCapabilities caps = context.getCapabilities();
final TextureStateRecord record = (TextureStateRecord) context.getStateRecord(StateType.Texture);
context.setCurrentState(StateType.Texture, state);
if (state.isEnabled()) {
Texture texture;
Texture.Type type;
TextureUnitRecord unitRecord;
TextureRecord texRecord;
final int glHint = JoglTextureUtil.getPerspHint(state.getCorrectionType());
if (!record.isValid() || record.hint != glHint) {
// set up correction mode
gl.glHint(GL2ES1.GL_PERSPECTIVE_CORRECTION_HINT, glHint);
record.hint = glHint;
}
// loop through all available texture units...
for (int i = 0; i < caps.getNumberOfTotalTextureUnits(); i++) {
unitRecord = record.units[i];
// grab a texture for this unit, if available
texture = state.getTexture(i);
// pull our texture id for this texture, for this context.
int textureId = texture != null ? texture.getTextureIdForContext(context.getGlContextRep()) : 0;
// check for invalid textures - ones that have no opengl id and
// no image data
if (texture != null && textureId == 0 && texture.getImage() == null) {
texture = null;
}
// null textures above fixed limit do not need to be disabled
// since they are not really part of the pipeline.
if (texture == null) {
if (i >= caps.getNumberOfFixedTextureUnits()) {
continue;
} else {
// a null texture indicates no texturing at this unit
// Disable texturing on this unit if enabled.
disableTexturing(unitRecord, record, i, caps);
if (i < state._keyCache.length) {
state._keyCache[i] = null;
}
// next texture!
continue;
}
}
type = texture.getType();
// disable other texturing types for this unit, if enabled.
disableTexturing(unitRecord, record, i, type, caps);
// Time to bind the texture, so see if we need to load in image
// data for this texture.
if (textureId == 0) {
// texture not yet loaded.
// this will load and bind and set the records...
load(texture, i);
textureId = texture.getTextureIdForContext(context.getGlContextRep());
if (textureId == 0) {
continue;
}
} else if (texture.isDirty(context.getGlContextRep())) {
update(texture, i);
textureId = texture.getTextureIdForContext(context.getGlContextRep());
if (textureId == 0) {
continue;
}
} else {
final GLDrawable drawable = GLContext.getCurrent().getGLDrawable();
// forces the rebinding when the drawable uses a frame buffer object
final boolean fbo = drawable.getChosenGLCapabilities().isFBO();
// texture already exists in OpenGL, just bind it if needed
if (!unitRecord.isValid() || unitRecord.boundTexture != textureId || fbo) {
checkAndSetUnit(i, record, caps);
gl.glBindTexture(getGLType(type), textureId);
if (Constants.stats) {
StatCollector.addStat(StatType.STAT_TEXTURE_BINDS, 1);
}
unitRecord.boundTexture = textureId;
}
}
// Use the Java Integer object for the getTextureRecord call to avoid
// boxing/unboxing ints for map lookups.
final Integer textureIdInteger = texture.getTextureIdForContextAsInteger(context.getGlContextRep());
// Grab our record for this texture
texRecord = record.getTextureRecord(textureIdInteger, texture.getType());
// Set the keyCache value for this unit of this texture state