cohtml.ViewRenderer

Inherits from IDisposable

Inherited by cohtml.ViewRendererRP

Public Functions

	Name
void	UpdateSize(uint width, uint height)
virtual abstract void	DrawFrameOnScreen() =0 Draws the view into the active render target. Must be implemented by derived renderer implementations.
virtual void	Dispose()
int	GetCohtmlOriginY() Returns the Y-axis origin convention used by Cohtml for texture UV coordinates.
int	GetUnityOriginY() Returns the Y-axis origin convention used by Unity for texture UV coordinates.
RenderTexture	CreateRenderTexture(string name, int width, int height, UnityEngine.Experimental.Rendering.GraphicsFormat format, int depth =0, bool enableRandomWrite =false) Creates and initializes a new RenderTexture with the specified dimensions and graphics format.
Shader	GetViewShader(CohtmlView view)
void	UpdateFlipKeyword(Material material, bool isFlipped)
void	SetInWorldMaterial(Material material, RenderTexture texture, bool isTransparent)
void	ApplyTransparencyBlendModes(Material material, bool isTransparent) Applies the appropriate blend mode and depth writing (ZWrite) settings to a given material based on whether it should be rendered as transparent or opaque. This updates the hidden _SrcBlend and _DstBlend shader properties used in the material’s shader. Transparent mode: SrcBlend = 5 (SrcAlpha), DstBlend = 10 (OneMinusSrcAlpha). Opaque mode: SrcBlend = 1 (One), DstBlend = 0 (Zero).

Protected Functions

	Name
	ViewRenderer(CohtmlView view) Initializes the renderer with the specified view. Sets up optional partitioning resources, compute shaders, and filtering materials depending on the current view configuration.
virtual abstract void	ApplyCompositorTextures() =0 Renders all composition textures associated with the current CohtmlView onto the given render target. Used for the Surface Partitioning feature.
Mesh	SetupQuad() Creates a 1×1 quad mesh with UVs for fullscreen or partitioned UI rendering.

Public Properties

	Name
CohtmlView	View

Public Attributes

	Name
const string	TextureName
const string	MaterialName
const string	BackgroundName
const string	GlobalBackdropOutputName
const string	GlobalBackdropMaskName
const string	IntermediateName
const string	CameraCopyName
IGlobalBackdropFilter	GlobalBackdropFilter
readonly int	CameraCopy
readonly int	MainTexId
readonly int	OverlayTexId
readonly int	UVOffsetId
readonly int	UVScaleId
readonly int	SrcBlendId
readonly int	DstBlendId
readonly int	ZWriteId
readonly int	TopLeft
readonly int	BottomLeft

Protected Attributes

	Name
const string	CohtmlViewName
Mesh	m_QuadMesh
Matrix4x4	m_PixelMatrix
MaterialPropertyBlock	m_MaterialPropertyBlock

Public Functions Documentation

function UpdateSize

void UpdateSize(
    uint width,
    uint height
)

function DrawFrameOnScreen

virtual abstract void DrawFrameOnScreen() =0

Draws the view into the active render target. Must be implemented by derived renderer implementations.

Reimplemented by: cohtml.ViewRendererRP.DrawFrameOnScreen

Depending on configuration, this may:

• Apply composition textures (UISurfacePartitioning)
• Execute C# backend rendering specific operations
• Apply global backdrop filter feature
• Render the final view texture onto the target

function Dispose

virtual void Dispose()

Reimplemented by: cohtml.ViewRendererRP.Dispose

function GetCohtmlOriginY

static int GetCohtmlOriginY()

Returns the Y-axis origin convention used by Cohtml for texture UV coordinates.

Return: 1 if Cohtml uses a top-left Y origin; otherwise 0.

function GetUnityOriginY

static int GetUnityOriginY()

Returns the Y-axis origin convention used by Unity for texture UV coordinates.

Return: 1 if Unity uses a top-left Y origin; otherwise 0.

function CreateRenderTexture

static RenderTexture CreateRenderTexture(
    string name,
    int width,
    int height,
    UnityEngine.Experimental.Rendering.GraphicsFormat format,
    int depth =0,
    bool enableRandomWrite =false
)

Creates and initializes a new RenderTexture with the specified dimensions and graphics format.

Parameters:

• name The name to assign to the RenderTexture for debugging purposes.
• width The width of the texture in pixels.
• height The height of the texture in pixels.
• format The graphics format of the texture.
• depth Optional. Number of bits in depth buffer.
• enableRandomWrite Optional. Set to true to enable random write access (UAV). Defaults to false.

Return: The successfully created RenderTexture, or null if the creation failed (e.g., due to an unsupported format or memory limits).

function GetViewShader

static Shader GetViewShader(
    CohtmlView view
)

function UpdateFlipKeyword

static void UpdateFlipKeyword(
    Material material,
    bool isFlipped
)

function SetInWorldMaterial

static void SetInWorldMaterial(
    Material material,
    RenderTexture texture,
    bool isTransparent
)

function ApplyTransparencyBlendModes

static void ApplyTransparencyBlendModes(
    Material material,
    bool isTransparent
)

Applies the appropriate blend mode and depth writing (ZWrite) settings to a given material based on whether it should be rendered as transparent or opaque. This updates the hidden _SrcBlend and _DstBlend shader properties used in the material’s shader. Transparent mode: SrcBlend = 5 (SrcAlpha), DstBlend = 10 (OneMinusSrcAlpha). Opaque mode: SrcBlend = 1 (One), DstBlend = 0 (Zero).

Parameters:

• material The target Material to update.
• isTransparent If true, configures the material for standard alpha blending and disables ZWrite (0). If false, configures it for opaque rendering and enables ZWrite (1).

Protected Functions Documentation

function ViewRenderer

ViewRenderer(
    CohtmlView view
)

Initializes the renderer with the specified view. Sets up optional partitioning resources, compute shaders, and filtering materials depending on the current view configuration.

Parameters:

• view The CohtmlView instance controlling rendering behavior.

function ApplyCompositorTextures

virtual abstract void ApplyCompositorTextures() =0

Renders all composition textures associated with the current CohtmlView onto the given render target. Used for the Surface Partitioning feature.

Reimplemented by: cohtml.ViewRendererRP.ApplyCompositorTextures

function SetupQuad

static Mesh SetupQuad()

Creates a 1×1 quad mesh with UVs for fullscreen or partitioned UI rendering.

Return: A newly created quad mesh.

Public Property Documentation

property View

CohtmlView View;

Public Attributes Documentation

variable TextureName

const string TextureName = CohtmlViewName + "Texture";

variable MaterialName

const string MaterialName = CohtmlViewName + "Material";

variable BackgroundName

const string BackgroundName = CohtmlViewName + "Background";

variable GlobalBackdropOutputName

const string GlobalBackdropOutputName = CohtmlViewName + "GlobalBackdropOutput";

variable GlobalBackdropMaskName

const string GlobalBackdropMaskName = CohtmlViewName + "GlobalBackdropMask";

variable IntermediateName

const string IntermediateName = CohtmlViewName + "Intermediate";

variable CameraCopyName

const string CameraCopyName = CohtmlViewName + "CameraCopy";

variable GlobalBackdropFilter

IGlobalBackdropFilter GlobalBackdropFilter;

variable CameraCopy

static readonly int CameraCopy = Shader.PropertyToID(CameraCopyName);

variable MainTexId

static readonly int MainTexId = Shader.PropertyToID("_MainTex");

variable OverlayTexId

static readonly int OverlayTexId = Shader.PropertyToID("_OverlayTex");

variable UVOffsetId

static readonly int UVOffsetId = Shader.PropertyToID("_UVOffset");

variable UVScaleId

static readonly int UVScaleId = Shader.PropertyToID("_UVScale");

variable SrcBlendId

static readonly int SrcBlendId = Shader.PropertyToID("_SrcBlend");

variable DstBlendId

static readonly int DstBlendId = Shader.PropertyToID("_DstBlend");

variable ZWriteId

static readonly int ZWriteId = Shader.PropertyToID("_ZWrite");

variable TopLeft

static readonly int TopLeft = (int)renoir.ImageOrigin.TopLeft;

variable BottomLeft

static readonly int BottomLeft = (int)renoir.ImageOrigin.BottomLeft;

Protected Attributes Documentation

variable CohtmlViewName

const string CohtmlViewName = "CoherentView_";

variable m_QuadMesh

Mesh m_QuadMesh;

variable m_PixelMatrix

Matrix4x4 m_PixelMatrix;

variable m_MaterialPropertyBlock

MaterialPropertyBlock m_MaterialPropertyBlock;

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