ISoftShaderContext

Functions

	SET_CID
const int *	GetStateVector
RenderCode &	GetRenderCode
const RenderCode &	GetRenderCode
void	GetProgramLocal
void	GetMatrixLocal
void	MatrixLocalMultiply4
Object *	GetTexture
double	GetGlossyAngle
double	GetGlossyAngleAniso
int	GetGlossySamplesCount

Detailed Description

class ISoftShaderContext : public RED::IREDObject

Shader evaluation context. Contains shader evaluation parameters.

@related The CPU Programming Pipeline, Writing a Custom Software Rendering Shader, class RED::ISoftRenderingContext, class RED::ISoftRayContext

Public Functions

SET_CID(CID_class_REDISoftShaderContext)

virtual const int *GetStateVector() const = 0

Gets the state vector.

The state vector is unused if we are used for a render shader.

Returns

The statevector in this shader context.

virtual RenderCode &GetRenderCode() = 0

Gets the shader binding specification.

Returns

The address of the RED::RenderCode to use for this shader.

virtual const RenderCode &GetRenderCode() const = 0

virtual void GetProgramLocal(double oParameter[4], int iBindPos, const RED::ISoftRayContext &iRayContext, const RED::ISoftRenderingContext &iRenderContext) const = 0

Gets a program parameter.

Parameters

• oParameter – Reference to the returned program local value.

• iBindPos – Binding position of the parameter.

• iRayContext – The actual ray context.

• iRenderContext – The actual rendering context.

virtual void GetMatrixLocal(RED::Matrix &ioMatrix, int iBindPos, const RED::ISoftRayContext &iRayContext, const RED::ISoftRenderingContext &iRenderContext) const = 0

Gets a matrix parameter streamed as 4 program locals.

Parameters

• ioMatrix – Receive the matrix components.

• iBindPos – The matrix binding position (first row out of 4).

• iRayContext – The actual ray context.

• iRenderContext – The actual rendering context.

virtual void MatrixLocalMultiply4(double oVector[4], int iBindPos, double iVector[4], const RED::ISoftRayContext &iRayContext, const RED::ISoftRenderingContext &iRenderContext) const = 0

Homogeneous product of a vector by a local matrix.

Parameters

• oVector – Resulting transformed vector (can be the same as ‘iVector’).

• iBindPos – Binding position of the first matrix vector. If ‘iBindPos’ is negative, ‘oVector’ is returned equal to ‘iVector’.

• iVector – Input vector.

• iRayContext – The actual ray context.

• iRenderContext – The actual rendering context.

virtual RED::Object *GetTexture(int iBindPos, const RED::ISoftRayContext &iRayContext, const RED::ISoftRenderingContext &iRenderContext) const = 0

Gets a shader texture.

Parameters

• iBindPos – Binding position of the texture.

• iRayContext – The actual ray context.

• iRenderContext – The actual rendering context.

Returns

The texture address.

virtual double GetGlossyAngle() const = 0

Returns

the glossiness angle.

virtual double GetGlossyAngleAniso() const = 0

Returns

the anisotropic glossiness angle.

virtual int GetGlossySamplesCount() const = 0

Returns

The number of glossiness samples to fire.