private static void clearEnabledAttributes(final ShaderObjectsStateRecord record, final GL gl) {
// go through and disable any enabled attributes
if (!record.enabledAttributes.isEmpty()) {
for (int i = 0, maxI = record.enabledAttributes.size(); i < maxI; i++) {
final ShaderVariable var = record.enabledAttributes.get(i);
if (var.getSize() == 1) {
if (gl.isGL2()) {
gl.getGL2().glDisableVertexAttribArrayARB(var.variableID);
} else {
if (gl.isGL2ES2()) {
gl.getGL2ES2().glDisableVertexAttribArray(var.variableID);
}
}
} else {
for (int j = 0, maxJ = var.getSize(); j < maxJ; j++) {
if (gl.isGL2()) {
gl.getGL2().glDisableVertexAttribArrayARB(var.variableID + j);
} else {
if (gl.isGL2ES2()) {
gl.getGL2ES2().glDisableVertexAttribArray(var.variableID + j);
}
}
}
}
}
record.enabledAttributes.clear();
}
}
public static void apply(final JoglRenderer renderer, final GLSLShaderObjectsState state) {
final GL gl = GLU.getCurrentGL();
final RenderContext context = ContextManager.getCurrentContext();
final ContextCapabilities caps = context.getCapabilities();
if (caps.isGLSLSupported()) {
// Ask for the current state record
final ShaderObjectsStateRecord record =
(ShaderObjectsStateRecord) context.getStateRecord(StateType.GLSLShader);
context.setCurrentState(StateType.GLSLShader, state);
if (state.isEnabled()) {
if (state._needSendShader) {
sendToGL(state);
}
if (state._shaderDataLogic != null) {
state._shaderDataLogic.applyData(state, state._mesh, renderer);
}
}
if (!record.isValid() || record.getReference() != state || state.needsRefresh()) {
record.setReference(state);
if (state.isEnabled()) {
if (state._programID != -1) {
gl.glUseProgramObjectARB(state._programID);
final List<ShaderVariable> attribs = state.getShaderAttributes();
for (int i = attribs.size(); --i >= 0; ) {
final ShaderVariable shaderVariable = attribs.get(i);
if (shaderVariable.needsRefresh) {
JoglShaderUtil.updateAttributeLocation(shaderVariable, state._programID);
shaderVariable.needsRefresh = false;
}
JoglShaderUtil.updateShaderAttribute(shaderVariable);
}
final List<ShaderVariable> uniforms = state.getShaderUniforms();
for (int i = uniforms.size(); --i >= 0; ) {
final ShaderVariable shaderVariable = uniforms.get(i);
if (shaderVariable.needsRefresh) {
JoglShaderUtil.updateUniformLocation(shaderVariable, state._programID);
JoglShaderUtil.updateShaderUniform(shaderVariable);
shaderVariable.needsRefresh = false;
}
}
}
} else {
gl.glUseProgramObjectARB(0);
}
}
if (!record.isValid()) {
record.validate();
}
}
}
/**
* Update variableID for uniform shadervariable if needed.
*
* @param variable shadervaribale to update ID on
* @param programID shader program context ID
*/
public static void updateUniformLocation(final ShaderVariable variable, final int programID) {
final GL gl = GLU.getCurrentGL();
if (variable.variableID == -1) {
variable.variableID =
gl.glGetUniformLocationARB(programID, variable.name); // TODO Check variable.name
if (variable.variableID == -1) {
logger.severe("Shader uniform [" + variable.name + "] could not be located in shader");
}
}
}