115 lines
3.2 KiB
C
115 lines
3.2 KiB
C
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////////////////////////////////////////////////////////////////////////////////////////////////////
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// NoesisGUI - http://www.noesisengine.com
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// Copyright (c) 2013 Noesis Technologies S.L. All Rights Reserved.
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////////////////////////////////////////////////////////////////////////////////////////////////////
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#ifndef __GUI_BRUSHSHADER_H__
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#define __GUI_BRUSHSHADER_H__
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#include <NsCore/Noesis.h>
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#include <NsCore/ReflectionDeclare.h>
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#include <NsGui/CoreApi.h>
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#include <NsGui/Animatable.h>
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#include <NsGui/IRenderProxyCreator.h>
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namespace Noesis
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{
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class ImageSource;
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NS_WARNING_PUSH
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NS_MSVC_WARNING_DISABLE(4251 4275)
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////////////////////////////////////////////////////////////////////////////////////////////////////
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/// Provides a custom brush by using a pixel shader.
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///
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/// Derive from the BrushShader class to implement a custom brush based on a pixel shader.
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///
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/// In comparison with ShaderEffect, a brush shader is more efficient because it doesn't need an
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/// extra render pass to an offscreen.
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///
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/// .. code-block:: xml
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///
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/// <Grid
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/// xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
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/// xmlns:noesis="clr-namespace:NoesisGUIExtensions;assembly=Noesis.GUI.Extensions"
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/// xmlns:local="clr-namespace:CustomBrushes">
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///
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/// <Rectangle Width="300" Height="300">
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/// <Rectangle.Fill>
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/// <ImageBrush ImageSource="Images/image.jpg">
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/// <noesis:Brush.Shader>
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/// <local:WaveBrush Frequency="0.7" />
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/// </noesis:Brush.Shader>
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/// </ImageBrush>
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/// </Rectangle.Fill>
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/// </Rectangle>
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///
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/// </Grid>
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////////////////////////////////////////////////////////////////////////////////////////////////////
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class NS_GUI_CORE_API BrushShader: public Animatable, public IRenderProxyCreator
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{
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public:
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BrushShader();
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BrushShader(const BrushShader&) = delete;
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BrushShader& operator=(const BrushShader&) = delete;
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virtual ~BrushShader() = 0;
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/// From IRenderProxyCreator
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//@{
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void CreateRenderProxy(RenderTreeUpdater& updater, uint32_t proxyIndex) override;
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void UpdateRenderProxy(RenderTreeUpdater& updater, uint32_t proxyIndex) override;
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void UnregisterRenderer(ViewId viewId) override;
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//@}
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/// From Freezable
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//@{
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Ptr<Freezable> CreateInstanceCore() const override;
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//@}
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NS_IMPLEMENT_INTERFACE_FIXUP
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protected:
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enum class Target: uint8_t
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{
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Path,
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Path_AA,
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SDF,
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SDF_LCD,
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Opacity
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};
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/// Sets the shader instructions for this brush for the specified target
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void SetPixelShader(void* shader, Target target);
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/// Sets extra texture at the given index
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void SetTexture(ImageSource* texture, uint32_t index);
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/// Sets the constant buffer for this brush's pixel shader
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void SetConstantBuffer(const void* buffer, uint32_t size);
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/// This method must be called whenever the content of the constant buffer changes
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void InvalidateConstantBuffer();
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protected:
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ProxyFlags mUpdateFlags;
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void* mPixelShaders[5];
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ImageSource* mTextures[4];
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const void* mCBuffer;
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uint32_t mCBufferSize;
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NS_DECLARE_REFLECTION(BrushShader, Animatable)
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};
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NS_WARNING_POP
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}
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#endif
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