/// <summary>
/// Create or update resources defined by this IGraphicsState, based on the associated <see cref="ShaderProgram"/>.
/// </summary>
/// <param name="ctx">
/// A <see cref="GraphicsContext"/> used for allocating resources.
/// </param>
/// <param name="shaderProgram">
/// A <see cref="ShaderProgram"/> that will be used in conjunction with this IGraphicsState.
/// </param>
public override void CreateState(GraphicsContext ctx, ShaderProgram shaderProgram)
{
// Create IGraphicsResource uniforms (i.e. textures)
Dictionary <string, UniformStateMember> uniformState = UniformState;
foreach (KeyValuePair <string, UniformStateMember> pair in uniformState)
{
if (pair.Value.GetUniformType().GetInterface("IGraphicsResource") == null)
{
continue;
}
IGraphicsResource graphicsResource = pair.Value.GetUniformValue(this) as IGraphicsResource;
if (graphicsResource == null)
{
continue;
}
// Create the IGraphicsResource associated with the uniform state variable
graphicsResource.Create(ctx);
}
// Uniform buffer is created depending on program
// It is assumed that the uniform buffer layout is shared across all shader programs, otherwise
// we need a way to identify the specific uniform buffer layout and map them based on ShaderProgram
// instances
CreateUniformBuffer(ctx, shaderProgram);
}
/// <summary>
/// Create or update resources defined by this IGraphicsState, based on the associated <see cref="ShaderProgram"/>.
/// </summary>
/// <param name="ctx">
/// A <see cref="GraphicsContext"/> used for allocating resources.
/// </param>
/// <param name="shaderProgram">
/// A <see cref="ShaderProgram"/> that will be used in conjunction with this IGraphicsState.
/// </param>
public override void Create(GraphicsContext ctx, ShaderProgram shaderProgram)
{
// Create IGraphicsResource uniforms (i.e. textures)
Dictionary <string, UniformStateMember> uniformState = UniformState;
foreach (KeyValuePair <string, UniformStateMember> pair in uniformState)
{
if (pair.Value.GetUniformType().GetInterface("IGraphicsResource") == null)
{
continue;
}
IGraphicsResource graphicsResource = pair.Value.GetUniformValue(this) as IGraphicsResource;
if (graphicsResource == null)
{
continue;
}
// Create the IGraphicsResource associated with the uniform state variable
graphicsResource.Create(ctx);
}
// Create uniform buffer, if supported
if (UniformBlockTag != null && shaderProgram != null && shaderProgram.IsActiveUniformBlock(UniformBlockTag) && UniformBuffer == null)
{
_UniformBuffer = shaderProgram.CreateUniformBlock(UniformBlockTag, MapBufferUsageMask.MapWriteBit);
_UniformBuffer.Create(ctx);
}
// Base implementation
base.Create(ctx, shaderProgram);
}
/// <summary>
/// Actually create resources associated to the type.
/// </summary>
/// <param name="instance">
/// A <see cref="Object"/> that specifies the underlying instance.
/// </param>
/// <param name="ctx">
/// A <see cref="GraphicsContext"/> used for creating the resources.
/// </param>
public virtual void Create(object instance, GraphicsContext ctx)
{
IGraphicsResource graphicsResource = instance as IGraphicsResource;
if (graphicsResource == null)
{
throw new InvalidOperationException("not implementing IGraphicsResource");
}
graphicsResource.Create(ctx);
}
/// <summary>
/// Actually create this GraphicsResource resources.
/// </summary>
/// <param name="ctx">
/// A <see cref="GraphicsContext"/> used for allocating resources.
/// </param>
protected override void CreateObject(GraphicsContext ctx)
{
Dictionary <string, UniformStateMember> uniformState = UniformState;
foreach (KeyValuePair <string, UniformStateMember> pair in uniformState)
{
if (pair.Value.GetUniformType().GetInterface("IGraphicsResource") == null)
{
continue;
}
IGraphicsResource graphicsResource = pair.Value.GetUniformValue(this) as IGraphicsResource;
// Create the IGraphicsResource associated with the uniform state variable
Debug.Assert(graphicsResource != null);
graphicsResource.Create(ctx);
}
}
