/// <summary>
/// Apply the set of GraphicsState collected by this instance.
/// </summary>
/// <param name="ctx">
/// A <see cref="GraphicsContext"/> defining the state vector.
/// </param>
/// <param name="program">
/// A <see cref="ShaderProgram"/> defining the uniform state.
/// </param>
/// <param name="currentStateSet">
///
/// </param>
private void Apply(GraphicsContext ctx, ShaderProgram program, GraphicsStateSet currentStateSet)
{
if (ctx == null)
{
throw new ArgumentNullException("ctx");
}
// Reset texture unit state
if (program != null)
{
program.ResetTextureUnits();
}
// Apply known states
foreach (KeyValuePair <string, IGraphicsState> pair in mRenderStates)
{
IGraphicsState state = pair.Value;
if (state.IsContextBound && (currentStateSet != null) && (currentStateSet.IsDefinedState(state.StateIdentifier)))
{
IGraphicsState currentState = currentStateSet[state.StateIdentifier];
if (currentState.Inheritable && state.Equals(currentState))
{
continue;
}
}
// Apply state if the state is context-bound, or a shader is currently in use
if ((program != null) || (state.IsContextBound))
{
state.ApplyState(ctx, program);
}
}
// Apply custom states, if any
foreach (GraphicsState customState in mCustomStates)
{
if ((program != null) || (customState.IsContextBound))
{
customState.ApplyState(ctx, program);
}
}
}
/// <summary>
/// Merge this GraphicsStateSet with a current state.
/// </summary>
/// <param name="ctx">
/// A <see cref="GraphicsContext"/> defining the state vector.
/// </param>
/// <param name="program">
/// A <see cref="ShaderProgram"/> defining the uniform state.
/// </param>
/// <param name="currentStateSet">
///
/// </param>
/// <returns></returns>
internal GraphicsStateSet Merge(GraphicsContext ctx, ShaderProgram program, GraphicsStateSet currentStateSet)
{
GraphicsStateSet mergedState = new GraphicsStateSet();
if (ctx == null)
{
throw new ArgumentNullException("ctx");
}
if (currentStateSet == null)
{
throw new ArgumentNullException("currentStateSet");
}
// Apply most recent states
foreach (KeyValuePair <string, IGraphicsState> pair in _RenderStates)
{
mergedState.DefineState(pair.Value.Copy());
}
// Keep inherited states
foreach (KeyValuePair <string, IGraphicsState> pair in currentStateSet._RenderStates)
{
IGraphicsState state = pair.Value;
if (mergedState.IsDefinedState(state.StateIdentifier) == false)
{
mergedState.DefineState(state.Copy());
}
else
{
mergedState[state.StateIdentifier].Merge(state);
}
}
mergedState.Apply(ctx, program);
return(mergedState);
}
/// <summary>
/// Apply the set of GraphicsState collected by this instance.
/// </summary>
/// <param name="ctx">
/// A <see cref="GraphicsContext"/> defining the state vector.
/// </param>
/// <param name="program">
/// A <see cref="ShaderProgram"/> defining the uniform state.
/// </param>
/// <param name="currentStateSet">
///
/// </param>
private void Apply(GraphicsContext ctx, ShaderProgram program, GraphicsStateSet currentStateSet)
{
if (ctx == null)
{
throw new ArgumentNullException("ctx");
}
// Reset texture unit state
if (program != null)
{
program.ResetTextureUnits();
}
// Apply known states
foreach (KeyValuePair <string, IGraphicsState> pair in _RenderStates)
{
IGraphicsState state = pair.Value;
if (state.IsContextBound && (currentStateSet != null) && (currentStateSet.IsDefinedState(state.StateIdentifier)))
{
IGraphicsState currentState = currentStateSet[state.StateIdentifier];
if (state.Equals(currentState))
{
continue;
}
}
// Apply state if:
// - the state is context-bound, or
// - the state is program-bound and a shader program is currently in use
if (state.IsContextBound || (state.IsShaderProgramBound && program != null))
{
state.ApplyState(ctx, program);
}
}
}
/// <summary>
/// Merge this GraphicsStateSet with a current state.
/// </summary>
/// <param name="ctx">
/// A <see cref="GraphicsContext"/> defining the state vector.
/// </param>
/// <param name="program">
/// A <see cref="ShaderProgram"/> defining the uniform state.
/// </param>
/// <param name="currentStateSet">
///
/// </param>
/// <returns></returns>
internal GraphicsStateSet Merge(GraphicsContext ctx, ShaderProgram program, GraphicsStateSet currentStateSet)
{
GraphicsStateSet mergedState = new GraphicsStateSet();
if (ctx == null)
throw new ArgumentNullException("ctx");
if (currentStateSet == null)
throw new ArgumentNullException("currentStateSet");
// Apply most recent states
foreach (KeyValuePair<string, IGraphicsState> pair in mRenderStates)
mergedState.DefineState(pair.Value.Copy());
// Keep inherited states
foreach (KeyValuePair<string, IGraphicsState> pair in currentStateSet.mRenderStates) {
IGraphicsState state = pair.Value;
if (mergedState.IsDefinedState(state.StateIdentifier) == false)
mergedState.DefineState(state.Copy());
else
mergedState[state.StateIdentifier].Merge(state);
}
mergedState.Apply(ctx, program);
return (mergedState);
}
/// <summary>
/// Apply the set of GraphicsState collected by this instance.
/// </summary>
/// <param name="ctx">
/// A <see cref="GraphicsContext"/> defining the state vector.
/// </param>
/// <param name="program">
/// A <see cref="ShaderProgram"/> defining the uniform state.
/// </param>
/// <param name="currentStateSet">
///
/// </param>
private void Apply(GraphicsContext ctx, ShaderProgram program, GraphicsStateSet currentStateSet)
{
if (ctx == null)
throw new ArgumentNullException("ctx");
// Reset texture unit state
if (program != null)
program.ResetTextureUnits();
// Apply known states
foreach (KeyValuePair<string, IGraphicsState> pair in mRenderStates) {
IGraphicsState state = pair.Value;
if (state.IsContextBound && (currentStateSet != null) && (currentStateSet.IsDefinedState(state.StateIdentifier))) {
IGraphicsState currentState = currentStateSet[state.StateIdentifier];
if (currentState.Inheritable && state.Equals(currentState))
continue;
}
// Apply state if the state is context-bound, or a shader is currently in use
if ((program != null) || (state.IsContextBound))
state.ApplyState(ctx, program);
}
// Apply custom states, if any
foreach (GraphicsState customState in mCustomStates) {
if ((program != null) || (customState.IsContextBound))
customState.ApplyState(ctx, program);
}
}