UUSL Data Structure

UUSL has Data structure which offers you a handy access to values.

Data has the following fields (values in world space has _w postfix):

struct Data {
	
	float 	depth;
	float3	position;
	float3	view;
	
	float3	normal;
	float3	reflection;
	
	// world space values
	float3	view_w;
	float3	normal_w;
	float3	reflection_w;
	
	float3	sky_reflect;
	
	float2	screen_coord;
	
	float	dotNV;
	
	float dielectric;
	float gloss;
};

Data dataDefault()

Return value

void dataSetPosition(inout Data Data, float3 pos)

Arguments

• inout Data Data - Data structure to fill.
• float3 pos - Position vector.

void dataCalculateWorldSpace(Data Data)

Arguments

• Data Data - Data structure to fill.

void dataSetGbuffer(inout Data Data, GBuffer gbuffer)

Arguments

• inout Data Data - Data structure.
• GBuffer gbuffer - GBuffer instance with necessary values to be set.

void dataCalculateAll(inout Data data, GBuffer gbuffer, float3 pos, float2 screen_coord)

Arguments

• inout Data data - Data structure to be filled with calculated values.
• GBuffer gbuffer - GBuffer struct.
• float3 pos - Position vector.
• float2 screen_coord - Screen coordinates.

To use Data structure in your shader's code, you should define and initialize the Data structure and fill it.

The following example shows the way of creating Data structure and calculating its values.

/* ... */
// input structure for fragment shader
STRUCT(FRAGMENT_IN)
	INIT_POSITION
	INIT_IN(float4,0)
	INIT_IN(float3,1)
	INIT_IN(float3x3,2)
	
	#ifdef USE_ALPHA_FADE && ALPHA_FADE
		INIT_IN(float,9)
	#endif
END

/* ... */
// in the main function of fragment shader
	// GBuffer 
	GBuffer gbuffer;

	/* fill the GBuffer struct */

	Data data;
	dataCalculateAll(data,gbuffer,IN_DATA(1),IN_POSITION.xy);
/* ... */