UUSL Textures and Buffers

Implementation of the API-dependent functions#

The implementation of the API-dependent functions is available in the corresponding header file for your reference:

core/materials/shaders/api/wrapper/directx11.h

Methods:

Name	Description View: Sort by:
INIT_TEXTURE	Initializes a sampler with the 2D texture.
INIT_TEXTURE_INT	Initializes a sampler with the 2D texture of int type.
INIT_TEXTURE_UINT	Initializes a sampler with the 2D texture of uint type.
INIT_TEXTURE_CUBE	Initializes a sampler with the cubemap texture.
INIT_TEXTURE_MSAA	Initializes a sampler with the multi-sampled texture.
INIT_TEXTURE_3D	Initializes a sampler with the texture3D.
INIT_TEXTURE_ARRAY	Initializes a sampler with the array of 2D textures.
INIT_TEXTURE_ARRAY_INT2	Initializes a sampler with the array of 2D textures of int2 type.
INIT_TEXTURE_ARRAY_UINT2	Initializes a sampler with the array of 2D textures of uint2 type.
INIT_W_TEXTURE	Initializes input 2D write texture.
INIT_W_TEXTURE_INT	Initializes input 2D write int texture.
INIT_W_TEXTURE_3D	Initializes input 3D write texture.
INIT_RW_TEXTURE_R32U	Initializes a 2D input read-write texture that has R32U format type.
INIT_RW_TEXTURE_R32F	Initializes a 2D input read-write texture that has R32F format type.
INIT_RW_TEXTURE_RGBA8	Initializes a 2D input read-write texture that has RGBA8 format type.
INIT_RW_TEXTURE_R32U_3D	Initializes a 3D input read-write texture that has R32U format type.
INIT_RW_TEXTURE_R32F_3D	Initializes a 3D input read-write texture that has R32F format type.
INIT_RW_TEXTURE_RGBA8_3D	Initializes a 3D input read-write texture that has RGBA8 format type.
INIT_RW_STRUCTURED_BUFFER	Initializes a read-write structured buffer.
INIT_STRUCTURED_BUFFER	Initializes a structure buffer.
TEXTURE_2D_MANUAL_LINEAR	Returns a linearly interpolated value of the specified 2D texture.
TEXTURE_2D_GATHER_MANUAL_LINEAR	Returns a linearly interpolated value of four samples (Red channel only) surrounding the specified UV of the 2D texture.
TEXTURE_2D_ARRAY_MANUAL_LINEAR	Returns a linearly interpolated value of the specified texture in the Texture 2D array.
texture_2d_cubic_filter	Returns calculated weights for the bicubic interpolation.
TEXTURE_2D_CUBIC	Returns the bicubically interpolated value of the specified 2D texture.
TEXTURE_2D_CUBIC_BIAS	Returns the bicubically interpolated value of the specified 2D texture.
TEXTURE_2D_ARRAY_CUBIC	Returns the bicubically interpolated value of the specified 2D texture in the 2D texture array.
TEXTURE_2D_CATMULL	Returns the Catmull interpolated value of the specified 2D texture.
TEXTURE_2D_ARRAY_CATMULL	Returns the Catmull interpolated value of the specified 2D texture in the 2D texture array.
TEXTURE_3D_CUBIC	Returns the cubically interpolated value of the specified 3D texture.
TEXTURE	Samples a texture.
TEXTURE_BIAS	Samples a texture using a mipmap-level offset (performs a texture lookup with explicit level-of-detail).
TEXTURE_OFFSET_BIAS	Samples a texture using a mipmap-level offset.
TEXTURE_BIAS_ZERO	Samples a texture using a mipmap-level offset on mipmap level 0 only.
TEXTURE_OFFSET	Samples a texture using a offset on mipmap level 0 only (performs a texture lookup with offset).
TEXTURE_GRAD	Samples a texture using a gradient to influence the way the sample location is calculated.
TEXTURE_MIP_OFFSET	Samples a texture using a negative mipmap offset.
TEXTURE_FETCH	Reads texel data from the first level-of-detail without any filtering or sampling.
TEXTURE_FETCH_LOD	Reads texel data without any filtering or sampling.
TEXTURE_ARRAY	Samples a texture array using a mipmap-level.
TEXTURE_ARRAY_FETCH	Reads texel data from a texture array from the first level-of-detail without any filtering or sampling.
TEXTURE_ARRAY_FETCH_LOD	Reads texel data from a texture array without any filtering or sampling.
TEXTURE_ARRAY_LOAD	Reads texel data without any filtering or sampling with zero offset.
TEXTURE_ARRAY_LOAD_LOD	Reads texel data without any filtering or sampling.
TEXTURE_LOAD	Reads texel data without any filtering or sampling with zero offset.
TEXTURE_LOAD_LOD	Reads texel data without any filtering or sampling.
TEXTURE_3D_FETCH	Reads texel data from a texture array from the first level-of-detail without any filtering or sampling.
TEXTURE_3D_FETCH_LOD	Reads texel data from a texture array without any filtering or sampling.
TEXTURE_3D_LOAD	Reads texel data of a 3D texture without any filtering or sampling with zero offset.
TEXTURE_3D_LOAD_LOD	Reads texel data of a single level of detail of a 3D texture without any filtering or sampling.
TEXTURE_RW_LOAD_RGBA8	Reads the RW RGBA8 texture and returns a float4 value.
TEXTURE_RW_LOAD_R32U	Reads the RW R32U texture and returns a uint value.
TEXTURE_RW_LOAD_R32F	Reads the RW R32F texture and returns a float value.
TEXTURE_RW_STORE_RGBA8	Stores the value to RW RGBA8 texture.
TEXTURE_RW_STORE_R32U	Stores the value to RW R32U texture.
TEXTURE_RW_STORE_R32F	Stores the value to RW R32F texture.
TEXTURE_W_STORE	Stores the value to W texture.
TEXTURE_OUT	Allows to pass a texture to function.
TEXTURE_OUT_2	Allows to pass two textures to a function.
TEXTURE_OUT_3	Allows to pass three textures to a function.
TEXTURE_OUT_4	Allows to pass four textures to a function.
TEXTURE_IN	Specifies the 2D texture for passing to function.
TEXTURE_IN_2	Specifies two 2D textures for passing to function.
TEXTURE_IN_3	Specifies three 2D textures for passing to function.
TEXTURE_IN_4	Specifies four 2D textures for passing to function.
TEXTURE_IN_CUBE	Specifies the cube texture for passing to function.
TEXTURE_IN_3D	Specifies the 3D texture for passing to function.
TEXTURE_IN_ARRAY	Specifies the texture array for passing to function.
TEXTURE_IN_ARRAY_INT2	Specifies the int2 texture array for passing to function.
textureResolution	Returns the texture resolution in pixels of the specified texture.
textureIResolution	Returns texel size of specified texture.
textureRWResolution	Returns texture resolution in pixels of the specified RW texture.
textureRWIResolution	Returns texel size of specified RW texture.
textureResolutionMip	Returns the resolution in pixels of the specified texture Mip level.
textureIResolutionMip	Returns the texel size of the specified texture Mip level.
textureNumberOfMips	Returns the total number of LODs for the specified texture.

Texture Initialization Functions#

Notice

The implementation of the SAMPLER(NUM) function in Direct3D is the following:

Direct3D

SamplerState s_sampler_ ## NAME : register(s ## NUM);
SamplerComparisonState s_sampler_compare_ ## NAME : register(s ## NUM);

INIT_TEXTURE ( value NUM, value NAME ) #

Initializes a sampler with the 2D texture.

Equivalent

Direct3D

Texture2D s_texture_ ## NAME : register(t ## NUM); SAMPLER(NUM,NAME)

Arguments

value NUM - Number of the texture slot.
value NAME - Name of the texture slot.

INIT_TEXTURE_INT ( value NUM, value NAME ) #

Initializes a sampler with the 2D texture of int type.

Equivalent

Direct3D

Texture2D<int> s_texture_ ## NAME : register(t ## NUM); SAMPLER(NUM,NAME)

Arguments

value NUM - Number of the texture slot.
value NAME - Name of the texture slot.

INIT_TEXTURE_UINT ( value NUM, value NAME ) #

Initializes a sampler with the 2D texture of uint type.

Equivalent

Direct3D

Texture2D<uint> s_texture_ ## NAME : register(t ## NUM); SAMPLER(NUM,NAME)

Arguments

value NUM - Number of the texture slot.
value NAME - Name of the texture slot.

INIT_TEXTURE_CUBE ( value NUM, value NAME ) #

Initializes a sampler with the cubemap texture.

Equivalent

Direct3D

TextureCube s_texture_ ## NAME : register(t ## NUM); SAMPLER(NUM,NAME)

Arguments

value NUM - Number of the texture slot.
value NAME - Name of the texture slot.

INIT_TEXTURE_MSAA ( value NUM, value NAME ) #

Initializes a sampler with the multi-sampled texture.

Equivalent

Direct3D

Texture2DMS<float4> s_texture_ ## NAME : register(t ## NUM);

Arguments

value NUM - Number of the texture slot.
value NAME - Name of the texture slot.

INIT_TEXTURE_3D ( value NUM, value NAME ) #

Initializes a sampler with the texture3D.

Equivalent

Direct3D

Texture3D s_texture_ ## NAME : register(t ## NUM); SAMPLER(NUM,NAME)

Arguments

value NUM - Number of the texture slot.
value NAME - Name of the texture slot.

INIT_TEXTURE_ARRAY ( value NUM, value NAME ) #

Initializes a sampler with the array of 2D textures.

Equivalent

Direct3D

Texture2DArray s_texture_ ## NAME : register(t ## NUM); SAMPLER(NUM,NAME)

Arguments

value NUM - Number of the texture slot.
value NAME - Name of the texture slot.

INIT_TEXTURE_ARRAY_INT2 ( value NUM, value NAME ) #

Initializes a sampler with the array of 2D textures of int2 type.

Equivalent

Direct3D

Texture2DArray<int2> s_texture_ ## NAME : register(t ## NUM); SAMPLER(NUM,NAME)

Arguments

value NUM - Number of the texture slot.
value NAME - Name of the texture slot.

INIT_TEXTURE_ARRAY_UINT2 ( value NUM, value NAME ) #

Initializes a sampler with the array of 2D textures of uint2 type.

Equivalent

Direct3D

Texture2DArray<uint2> s_texture_ ## NAME : register(t ## NUM); SAMPLER(NUM,NAME)

Arguments

value NUM - Number of the texture slot.
value NAME - Name of the texture slot.

INIT_W_TEXTURE ( value NUM, value NAME, value TYPE, value FORMAT ) #

Initializes input 2D write texture.

Equivalent

Direct3D

RWTexture2D<FORMAT> s_rw_texture_ ## NAME : register(u ## NUM);

Arguments

value NUM - Number of the texture slot.
value NAME - Name of the texture slot.
value TYPE - Type of the texture (RGBA8, RGBA32F, etc.).
value FORMAT - Format of the texture (float, float2, float3, float4, int).

INIT_W_TEXTURE_INT ( value NUM, value NAME, value TYPE, value FORMAT ) #

Initializes input 2D write int texture.

Equivalent

Direct3D

RWTexture2D<FORMAT> s_rw_texture_ ## NAME : register(u ## NUM);

Arguments

value NUM - Number of the texture slot.
value NAME - Name of the texture slot.
value TYPE - Type of the texture (RGBA8, RGBA32F, etc.).
value FORMAT - Format of the texture (float, float2, float3, float4, int).

INIT_W_TEXTURE_3D ( value NUM, value NAME, value TYPE, value FORMAT ) #

Initializes input 3D write texture.

Equivalent

Direct3D

RWTexture3D<FORMAT> s_rw_texture_ ## NAME : register(u ## NUM);

Arguments

value NUM - Number of the texture slot.
value NAME - Name of the texture slot.
value TYPE - A type of the texture (rgba8,rgba32f,etc.).
value FORMAT - A format of the texture (float,float2,float3,float4,int).

INIT_RW_TEXTURE_R32U ( value NUM, value NAME ) #

Initializes a 2D input read-write texture that has R32U format type.

Equivalent

Direct3D

RWTexture2D<uint> s_rw_texture_ ## NAME : register(u ## NUM);

Arguments

value NUM - Number of the texture slot.
value NAME - Name of the texture slot.

INIT_RW_TEXTURE_R32F ( value NUM, value NAME ) #

Initializes a 2D input read-write texture that has R32F format type.

Equivalent

Direct3D

RWTexture2D<float> s_rw_texture_ ## NAME : register(u ## NUM);

Arguments

value NUM - Number of the texture slot.
value NAME - Name of the texture slot.

INIT_RW_TEXTURE_RGBA8 ( value NUM, value NAME ) #

Initializes a 2D input read-write texture that has RGBA8 format type.

Equivalent

Direct3D

RWTexture2D<rgba8> s_rw_texture_ ## NAME : register(u ## NUM);

Arguments

value NUM - Number of the texture slot.
value NAME - Name of the texture slot.

INIT_RW_TEXTURE_R32U_3D ( value NUM, value NAME ) #

Initializes a 3D input read-write texture that has R32U format type.

Equivalent

Direct3D

RWTexture3D<uint> s_rw_texture_ ## NAME : register(u ## NUM);

Arguments

value NUM - Number of the texture slot.
value NAME - Name of the texture slot.

INIT_RW_TEXTURE_R32F_3D ( value NUM, value NAME ) #

Initializes a 3D input read-write texture that has R32F format type.

Equivalent

Direct3D

RWTexture3D<float> s_rw_texture_ ## NAME : register(u ## NUM);

Arguments

value NUM - Number of the texture slot.
value NAME - Name of the texture slot.

INIT_RW_TEXTURE_RGBA8_3D ( value NUM, value NAME ) #

Initializes a 3D input read-write texture that has RGBA8 format type.

Equivalent

Direct3D

RWTexture3D<rgba8> s_rw_texture_ ## NAME : register(u ## NUM);

Arguments

value NUM - Number of the texture slot.
value NAME - Name of the texture slot.

INIT_RW_STRUCTURED_BUFFER ( value NUM, value STRUCTURE, value NAME ) #

Initializes a read-write structured buffer.

Equivalent

Direct3D

RWStructuredBuffer<STRUCTURE> NAME : register(u ## NUM);

Arguments

value NUM - Number of the texture slot.
value STRUCTURE - A structure to be stored in buffer.
value NAME - Name of the texture slot.

INIT_STRUCTURED_BUFFER ( value NUM, value STRUCTURE, value NAME ) #

Initializes a structure buffer.

Equivalent

Direct3D

StructuredBuffer<STRUCTURE> NAME : register(t[NUM_TEXTURES+NUM]);

Arguments

value NUM - Number of the texture slot.
value STRUCTURE - A structure to be stored in buffer.
value NAME - Name of the texture slot.

Reading and Sampling a Texture#

float4 TEXTURE_2D_MANUAL_LINEAR ( Texture2D TEX_VALUE, float2 uv ) #

Returns a linearly interpolated value of the specified 2D texture.

Arguments

Texture2D TEX_VALUE - 2D Texture.
float2 uv - Texture coordinates.

Return value

Linearly interpolated value.

float TEXTURE_2D_GATHER_MANUAL_LINEAR ( Texture2D TEX_VALUE, float2 uv ) #

Returns a linearly interpolated value of four samples (Red channel only) surrounding the specified UV of the 2D texture.

Arguments

Texture2D TEX_VALUE - 2D Texture.
float2 uv - Texture coordinates.

Return value

Linearly interpolated value of four samples (Red channel only).

float4 TEXTURE_2D_ARRAY_MANUAL_LINEAR ( Texture2DArray TEX_VALUE, float2 uv, float index ) #

Returns a linearly interpolated value of the specified texture in the Texture 2D array.

Arguments

Texture2DArray TEX_VALUE - 2D Texture array.
float2 uv - Texture coordinates.
float index - Index of the texture in the array.

Return value

Linearly interpolated value.

float3 texture_2d_cubic_filter ( float x ) #

Returns calculated weights for the bicubic interpolation.

Arguments

float x - Value to be filtered.

Return value

Vector containing weights for the bicubic interpolation.

float4 TEXTURE_2D_CUBIC ( Texture2D TEX_VALUE, float2 uv ) #

Returns the bicubically interpolated value of the specified 2D texture.

Arguments

Texture2D TEX_VALUE - 2D texture.
float2 uv - Texture coordinates.

Return value

Bicubically interpolated value of the specified 2D texture.

float4 TEXTURE_2D_CUBIC_BIAS ( Texture2D TEX_VALUE, float2 uv, int mip ) #

Returns the bicubically interpolated value of the specified 2D texture.

Arguments

Texture2D TEX_VALUE - 2D texture.
float2 uv - Texture coordinates.
int mip - Mipmap level.

Return value

Bicubically interpolated value of the specified 2D texture for the specified mipmap-level offset (performs a texture lookup with explicit level-of-detail).

float4 TEXTURE_2D_ARRAY_CUBIC ( Texture2DArray TEX_VALUE, float2 uv, float index ) #

Returns the bicubically interpolated value of the specified 2D texture in the 2D texture array.

Arguments

Texture2DArray TEX_VALUE - 2D texture array.
float2 uv - Texture coordinates.
float index - Index of the texture in the array.

Return value

Bicubically interpolated value of the specified 2D texture.

float4 TEXTURE_2D_CATMULL ( Texture2D TEX_VALUE, float2 uv ) #

Returns the Catmull interpolated value of the specified 2D texture.

Arguments

Texture2D TEX_VALUE - 2D texture.
float2 uv - Texture coordinates.

Return value

Catmull interpolated value of the specified 2D texture.

float4 TEXTURE_2D_ARRAY_CATMULL ( Texture2DArray TEX_VALUE, float2 uv, float index ) #

Returns the Catmull interpolated value of the specified 2D texture in the 2D texture array.

Arguments

Texture2DArray TEX_VALUE - 2D texture array.
float2 uv - Texture coordinates.
float index - Index of the texture in the array.

Return value

Catmull interpolated value of the specified 2D texture.

float4 TEXTURE_3D_CUBIC ( Texture3D TEX_VALUE, float3 uv ) #

Returns the cubically interpolated value of the specified 3D texture.

Arguments

Texture3D TEX_VALUE - 3D texture.
float3 uv - 3D texture coordinates (UVW).

Return value

Cubically interpolated value of 3D texture.

TEXTURE ( value NAME, value COORD ) #

Samples a texture.

Equivalent

Direct3D

s_texture_ ## NAME.Sample(s_sampler_ ## NAME ,COORD)

Arguments

value NAME - Name of the texture slot.
value COORD - UV coordinates.

TEXTURE_BIAS ( value NAME, value COORD, value BIAS ) #

Samples a texture using a mipmap-level offset (performs a texture lookup with explicit level-of-detail).

Equivalent

Direct3D

s_texture_ ## NAME.SampleLevel(s_sampler_ ## NAME,COORD,BIAS)

Arguments

value NAME - Name of the texture slot.
value COORD - UV coordinates.
value BIAS - Mipmap level.

TEXTURE_OFFSET_BIAS ( value NAME, value COORD, value OFFSET, value BIAS ) #

Samples a texture using a mipmap-level offset.

Equivalent

Direct3D

s_texture_ ## NAME.SampleLevel(s_sampler_ ## NAME,COORD,BIAS,OFFSET)

Arguments

value NAME - Name of the texture slot.
value COORD - UV coordinates.
value OFFSET - Offset.
value BIAS - Mipmap level.

TEXTURE_BIAS_ZERO ( value NAME, value COORDS ) #

Samples a texture using a mipmap-level offset on mipmap level 0 only.

Equivalent

Direct3D

s_texture_ ## NAME.SampleLevel(s_sampler_ ## NAME,COORDS,0.0f)

Arguments

value NAME - Name of the texture slot.
value COORDS - UV coordinates.

TEXTURE_OFFSET ( value NAME, value COORD, value OFFSET ) #

Samples a texture using a offset on mipmap level 0 only (performs a texture lookup with offset).

Equivalent

Direct3D

s_texture_ ## NAME.SampleLevel(s_sampler_ ## NAME,COORD,0,OFFSET)

Arguments

value NAME - Name of the texture slot.
value COORD - UV coordinates.
value OFFSET - Offset.

TEXTURE_GRAD ( value NAME, value COORD, value DDX, value DDY ) #

Samples a texture using a gradient to influence the way the sample location is calculated.

Equivalent

Direct3D

s_texture_ ## NAME.SampleGrad(s_sampler_ ## NAME,COORD,DDX,DDY)

Arguments

value NAME - Name of the texture slot.
value COORD - UV coordinates.
value DDX - The rate of change of the surface geometry in the x direction.
value DDY - The rate of change of the surface geometry in the y direction.

TEXTURE_MIP_OFFSET ( value NAME, value COORD, value OFFSET ) #

Samples a texture using a negative mipmap offset.

Equivalent

Direct3D

s_texture_ ## NAME.SampleBias(s_sampler_ ## NAME, COORD, -OFFSET)

Arguments

value NAME - Name of the texture slot.
value COORD - UV coordinates.
value OFFSET - Offset.

TEXTURE_FETCH ( value NAME, value COORD ) #

Reads texel data from the first level-of-detail without any filtering or sampling.

Equivalent

Direct3D

s_texture_ ## NAME.Load(uint3(COORD, 0))

Arguments

value NAME - Name of the texture slot.
value COORD - UV coordinates.

TEXTURE_FETCH_LOD ( value NAME, value COORD, value LOD ) #

Reads texel data without any filtering or sampling.

Equivalent

Direct3D

s_texture_ ## NAME.Load(uint3(COORD, LOD))

Arguments

value NAME - Name of the texture slot.
value COORD - UV coordinates.
value LOD - Level-of-detail within the texture from which the texel will be fetched.

TEXTURE_ARRAY ( value NAME, value COORDS, value LAYER, value LOD ) #

Samples a texture array using a mipmap-level.

Equivalent

Direct3D

s_texture_ ## NAME.SampleLevel(s_sampler_ ## NAME,float3(COORDS,LAYER),LOD)

Arguments

value NAME - Name of the texture slot.
value COORDS - UV coordinates.
value LAYER - Layer value.
value LOD - Level-of-detail within the texture from which the texel will be fetched.

TEXTURE_ARRAY_FETCH ( value NAME, value COORD, value INDEX ) #

Reads texel data from a texture array from the first level-of-detail without any filtering or sampling.

Equivalent

Direct3D

s_texture_ ## NAME.Load(uint4(COORD, INDEX, 0))

Arguments

value NAME - Name of the texture slot.
value COORD - UV coordinates.
value INDEX - Texture index.

TEXTURE_ARRAY_FETCH_LOD ( value NAME, value COORD, value INDEX, value LOD ) #

Reads texel data from a texture array without any filtering or sampling.

Equivalent

Direct3D

s_texture_ ## NAME.Load(uint4(COORD, INDEX, LOD))

Arguments

value NAME - Name of the texture slot.
value COORD - UV coordinates.
value INDEX - Texture index.
value LOD - Level-of-detail within the texture from which the texel will be fetched.

TEXTURE_ARRAY_LOAD ( value NAME, value COORD, value INDEX ) #

Reads texel data without any filtering or sampling with zero offset.

Equivalent

Direct3D

s_texture_ ## NAME.Load(uint3(COORD,0))

Arguments

value NAME - Name of the texture slot.
value COORD - UV coordinates.
value INDEX - Texture index.

TEXTURE_ARRAY_LOAD_LOD ( value NAME, value COORD, value INDEX, value LOD ) #

Reads texel data without any filtering or sampling.

Equivalent

Source code (Shader)

TEXTURE_ARRAY_FETCH_LOD(NAME, (COORD) * textureResolution(NAME).xy * (1.0f / pow(2, LOD)), INDEX, LOD)

Arguments

value NAME - Name of the texture slot.
value COORD - UV coordinates.
value INDEX - Texture index.
value LOD - Level-of-detail within the texture from which the texel will be fetched.

TEXTURE_LOAD ( value NAME, value COORD ) #

Reads texel data without any filtering or sampling with zero offset.

Equivalent

Direct3D

s_texture_ ## NAME.Load(uint3(COORD,0))

Arguments

value NAME - Name of the texture slot.
value COORD - UV coordinates.

TEXTURE_LOAD_LOD ( value NAME, value COORD, value LOD ) #

Reads texel data without any filtering or sampling.

Equivalent

Direct3D

s_texture_ ## NAME.Load(uint3(COORD,LOD))

Arguments

value NAME - Name of the texture slot.
value COORD - UV coordinates.
value LOD - Level-of-detail within the texture from which the texel will be fetched.

TEXTURE_3D_FETCH ( value NAME, value COORD, value INDEX ) #

Reads texel data from a texture array from the first level-of-detail without any filtering or sampling.

Equivalent

Direct3D

s_texture_ ## NAME.Load(uint4(COORD, INDEX, 0))

Arguments

value NAME - Name of the texture slot.
value COORD - UV coordinates.
value INDEX - Texture index.

TEXTURE_3D_FETCH_LOD ( value NAME, value COORD, value INDEX, value LOD ) #

Reads texel data from a texture array without any filtering or sampling.

Equivalent

Direct3D

s_texture_ ## NAME.Load(uint4(COORD, INDEX, LOD))

Arguments

value NAME - Name of the texture slot.
value COORD - UV coordinates.
value INDEX - Texture index.
value LOD - Level-of-detail within the texture from which the texel will be fetched.

TEXTURE_3D_LOAD ( value NAME, value COORD ) #

Reads texel data of a 3D texture without any filtering or sampling with zero offset.

Equivalent

Source code (Shader)

TEXTURE_3D_LOAD_LOD(NAME, COORD, 0)

Arguments

value NAME - Name of the texture slot.
value COORD - UV coordinates.

TEXTURE_3D_LOAD_LOD ( value NAME, value COORD, value LOD ) #

Reads texel data of a single level of detail of a 3D texture without any filtering or sampling.

Equivalent

Direct3D

s_texture_ ## NAME.Load(uint4((COORD) * textureResolution(NAME).xyz * (1.0f / pow(2, LOD)), LOD))

Arguments

value NAME - Name of the texture slot.
value COORD - UV coordinates.
value LOD - Level-of-detail within the texture from which the texel will be fetched.

float4 TEXTURE_RW_LOAD_RGBA8 ( value NAME, value COORD ) #

Reads the RW RGBA8 texture and returns a float4 value.

Equivalent

Direct3D

pack32To8888(s_rw_texture_ ## NAME[ ## COORD ## ])

Arguments

value NAME - Name of the texture slot.
value COORD - Unnormalized pixel coordinates.

Return value

Texture value.

uint TEXTURE_RW_LOAD_R32U ( value NAME, value COORD ) #

Reads the RW R32U texture and returns a uint value.

Equivalent

Direct3D

s_rw_texture_ ## NAME[ ## COORD ## ]

Arguments

value NAME - Name of the texture slot.
value COORD - Unnormalized pixel coordinates.

Return value

Texture value.

float TEXTURE_RW_LOAD_R32F ( value NAME, value COORD ) #

Reads the RW R32F texture and returns a float value.

Equivalent

Direct3D

s_rw_texture_ ## NAME[ ## COORD ## ]

Arguments

value NAME - Name of the texture slot.
value COORD - Unnormalized pixel coordinates.

Return value

Texture value.

Writing to UAV Texture#

TEXTURE_RW_STORE_RGBA8 ( value NAME, value COORD, value VALUE ) #

Stores the value to RW RGBA8 texture.

Equivalent

Direct3D

s_rw_texture_ ## NAME[COORD] = pack8888To32(VALUE)

Arguments

value NAME - Name of the texture slot.
value COORD - Unnormalized pixel coordinates.
value VALUE - A value to store.

TEXTURE_RW_STORE_R32U ( value NAME, value COORD, value VALUE ) #

Stores the value to RW R32U texture.

Equivalent

Direct3D

s_rw_texture_ ## NAME[COORD] = VALUE

Arguments

value NAME - Name of the texture slot.
value COORD - Unnormalized pixel coordinates.
value VALUE - A value to store.

TEXTURE_RW_STORE_R32F ( value NAME, value COORD, value VALUE ) #

Stores the value to RW R32F texture.

Equivalent

Direct3D

s_rw_texture_ ## NAME[COORD] = VALUE

Arguments

value NAME - Name of the texture slot.
value COORD - Unnormalized pixel coordinates.
value VALUE - A value to store.

TEXTURE_W_STORE ( value NAME, value COORD, value VALUE ) #

Stores the value to W texture.

Equivalent

Direct3D

s_rw_texture_ ## NAME[uint2(COORD)] = VALUE

Arguments

value NAME - Name of the texture slot.
value COORD - Unnormalized pixel coordinates.
value VALUE - A value to store.

Passing Textures to Functions#

UUSL allows you to pass textures to functions as arguments.

Here is a usage example:

UUSL

float4 func_name(float4 color,float2 uv,TEXTURE_IN_2(texture_0,texture_1)) {
	return TEXTURE(texture_0,uv) * TEXTURE_BIAS(texture_1,uv,5.0f) * color;
}

float4 new_color = func_name(color,uv,TEXTURE_OUT_2(TEX_COLOR_0,TEX_COLOR_1));

TEXTURE_OUT ( value NAME ) #

Allows to pass a texture to function.

Equivalent

Direct3D

s_texture_ ## NAME,s_sampler_ ## NAME

Arguments

value NAME - Name of the texture slot.

TEXTURE_OUT_2 ( value NAME0, value NAME1 ) #

Allows to pass two textures to a function.

Equivalent

Direct3D

TEXTURE_OUT(NAME0),TEXTURE_OUT(NAME1)

Arguments

value NAME0 - Name of the texture slot (for the first texture).
value NAME1 - Name of the texture slot (for the second texture).

TEXTURE_OUT_3 ( value NAME0, value NAME1, value NAME2 ) #

Allows to pass three textures to a function.

Equivalent

Direct3D

TEXTURE_OUT_2(NAME0,NAME1),TEXTURE_OUT(NAME2)

Arguments

value NAME0 - Name of the texture slot (for the first texture).
value NAME1 - Name of the texture slot (for the second texture).
value NAME2 - Name of the texture slot (for the third texture).

TEXTURE_OUT_4 ( value NAME0, value NAME1, value NAME2, value NAME3 ) #

Allows to pass four textures to a function.

Equivalent

Direct3D

TEXTURE_OUT_3(NAME0,NAME1,NAME2),TEXTURE_OUT(NAME3)

Arguments

value NAME0 - Name of the texture slot (for the first texture).
value NAME1 - Name of the texture slot (for the second texture).
value NAME2 - Name of the texture slot (for the third texture).
value NAME3 - Name of the texture slot (for the fourth texture).

TEXTURE_IN ( value NAME ) #

Specifies the 2D texture for passing to function.

Equivalent

Direct3D

Texture2D s_texture_ ## NAME,SamplerState s_sampler_ ## NAME

Arguments

value NAME - Name of the texture.

TEXTURE_IN_2 ( value NAME0, value NAME1 ) #

Specifies two 2D textures for passing to function.

Equivalent

Direct3D

TEXTURE_IN(NAME0),TEXTURE_IN(NAME1)

Arguments

value NAME0 - Name of the first texture.
value NAME1 - Name of the second texture.

TEXTURE_IN_3 ( value NAME0, value NAME1, value NAME2 ) #

Specifies three 2D textures for passing to function.

Equivalent

Direct3D

TEXTURE_IN_2(NAME0,NAME1),TEXTURE_IN(NAME2)

Arguments

value NAME0 - Name of the first texture.
value NAME1 - Name of the second texture.
value NAME2 - Name of the third texture.

TEXTURE_IN_4 ( value NAME0, value NAME1, value NAME2, value NAME3 ) #

Specifies four 2D textures for passing to function.

Equivalent

Direct3D

TEXTURE_IN_3(NAME0,NAME1,NAME2),TEXTURE_IN(NAME3)

Arguments

value NAME0 - Name of the first texture.
value NAME1 - Name of the second texture.
value NAME2 - Name of the third texture.
value NAME3 - Name of the fourth texture.

TEXTURE_IN_CUBE ( value NAME ) #

Specifies the cube texture for passing to function.

Equivalent

Direct3D

TextureCube s_texture_ ## NAME,SamplerState s_sampler_ ## NAME

Arguments

value NAME - Name of the texture.

TEXTURE_IN_3D ( value NAME ) #

Specifies the 3D texture for passing to function.

Equivalent

Direct3D

Texture3D s_texture_ ## NAME,SamplerState s_sampler_ ## NAME

Arguments

value NAME - Name of the texture.

TEXTURE_IN_ARRAY ( value NAME ) #

Specifies the texture array for passing to function.

Equivalent

Direct3D

Texture2DArray s_texture_ ## NAME,SamplerState s_sampler_ ## NAME

Arguments

value NAME - Name of the texture.

TEXTURE_IN_ARRAY_INT2 ( value NAME ) #

Specifies the int2 texture array for passing to function.

Equivalent

Direct3D

Texture2DArray s_texture_ ## NAME,SamplerState s_sampler_ ## NAME

Arguments

value NAME - Name of the texture.

Texture Resolution#

int2 textureResolution ( value TEXTURE ) #

Returns the texture resolution in pixels of the specified texture. This function supports 2D and Cube textures only.

This function is API-dependent.

Arguments

value TEXTURE - Texture.

Return value

Texture width and height.

int3 textureResolution ( value TEXTURE ) #

Returns the texture resolution in pixels of the specified texture. This function supports 2D Array, 3D and Cube Array textures only.

This function is API-dependent.

Arguments

value TEXTURE - Texture.

Return value

Texture width, height, and depth.

float2 textureIResolution ( value TEXTURE ) #

Returns texel size of specified texture. This function supports 2D and Cube textures only.

This function is API-dependent.

Arguments

value TEXTURE - Texture.

Return value

Texel size of specified texture.

float3 textureIResolution ( value TEXTURE ) #

Returns texel size of specified texture. This function supports 2D Array, 3D and Cube Array textures only.

This function is API-dependent.

Arguments

value TEXTURE - Texture.

Return value

Texel size of specified texture.

int2 textureRWResolution ( value TEXTURE ) #

Returns texture resolution in pixels of the specified RW texture. This function supports 2D RW textures only.

This function is API-dependent.

Arguments

value TEXTURE - RW texture.

Return value

Texture width and height.

float2 textureRWIResolution ( value TEXTURE ) #

Returns texel size of specified RW texture. This function supports 2D RW textures only.

This function is API-dependent.

Arguments

value TEXTURE - RW texture.

Return value

Texel size of specified RW texture.

int2 textureResolutionMip ( value TEXTURE, int LOD ) #

Returns the resolution in pixels of the specified texture Mip level. This function supports 2D and Cube textures only.

This function is API-dependent.

Arguments

value TEXTURE - Texture.
int LOD - Specific Mip of the texture.

Return value

Texture width and height.

int3 textureResolutionMip ( value TEXTURE, int LOD ) #

Returns the resolution in pixels of the specified texture Mip level. This function supports 2D Array, 3D and Cube Array textures only.

This function is API-dependent.

Arguments

value TEXTURE - Texture.
int LOD - Specific Mip of the texture.

Return value

Texture width, height, and depth.

float2 textureIResolutionMip ( value TEXTURE, int LOD ) #

Returns the texel size of the specified texture Mip level. This function supports 2D and Cube textures only.

This function is API-dependent.

Arguments

value TEXTURE - Texture.
int LOD - Specific Mip of the texture.

Return value

Texel size of the specified texture Mip level.

float3 textureIResolutionMip ( value TEXTURE, int LOD ) #

Returns the texel size of the specified texture Mip level. This function supports 2D Array, 3D and Cube Array textures only.

This function is API-dependent.

Arguments

value TEXTURE - Texture.
int LOD - Specific Mip of the texture.

Return value

Texel size of the specified texture Mip level.

int textureNumberOfMips ( value TEXTURE ) #

Returns the total number of LODs for the specified texture. This function supports 2D, 2DArray, 3D, Cube, CubeArray textures only.

Arguments

value TEXTURE - Texture.

Return value

Total number of texture Mips.

Last update: 2024-12-13

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UUSL Textures and Buffers

In This Article:

Implementation of the API-dependent functions#

Methods:

Texture Initialization Functions#

INIT_TEXTURE ( value NUM, value NAME ) #

Arguments

INIT_TEXTURE_INT ( value NUM, value NAME ) #

Arguments

INIT_TEXTURE_UINT ( value NUM, value NAME ) #

Arguments

INIT_TEXTURE_CUBE ( value NUM, value NAME ) #

Arguments

INIT_TEXTURE_MSAA ( value NUM, value NAME ) #

Arguments

INIT_TEXTURE_3D ( value NUM, value NAME ) #

Arguments

INIT_TEXTURE_ARRAY ( value NUM, value NAME ) #

Arguments

INIT_TEXTURE_ARRAY_INT2 ( value NUM, value NAME ) #

Arguments

INIT_TEXTURE_ARRAY_UINT2 ( value NUM, value NAME ) #

Arguments

INIT_W_TEXTURE ( value NUM, value NAME, value TYPE, value FORMAT ) #

Arguments

INIT_W_TEXTURE_INT ( value NUM, value NAME, value TYPE, value FORMAT ) #

Arguments

INIT_W_TEXTURE_3D ( value NUM, value NAME, value TYPE, value FORMAT ) #

Arguments

INIT_RW_TEXTURE_R32U ( value NUM, value NAME ) #

Arguments

INIT_RW_TEXTURE_R32F ( value NUM, value NAME ) #

Arguments

INIT_RW_TEXTURE_RGBA8 ( value NUM, value NAME ) #

Arguments

INIT_RW_TEXTURE_R32U_3D ( value NUM, value NAME ) #

Arguments

INIT_RW_TEXTURE_R32F_3D ( value NUM, value NAME ) #

Arguments

INIT_RW_TEXTURE_RGBA8_3D ( value NUM, value NAME ) #

Arguments

INIT_RW_STRUCTURED_BUFFER ( value NUM, value STRUCTURE, value NAME ) #

Arguments

INIT_STRUCTURED_BUFFER ( value NUM, value STRUCTURE, value NAME ) #

Arguments

Reading and Sampling a Texture#

float4 TEXTURE_2D_MANUAL_LINEAR ( Texture2D TEX_VALUE, float2 uv ) #

Arguments

Return value

float TEXTURE_2D_GATHER_MANUAL_LINEAR ( Texture2D TEX_VALUE, float2 uv ) #

Arguments

Return value

float4 TEXTURE_2D_ARRAY_MANUAL_LINEAR ( Texture2DArray TEX_VALUE, float2 uv, float index ) #

Arguments

Return value

float3 texture_2d_cubic_filter ( float x ) #

Arguments

Return value

float4 TEXTURE_2D_CUBIC ( Texture2D TEX_VALUE, float2 uv ) #

Arguments

Return value

float4 TEXTURE_2D_CUBIC_BIAS ( Texture2D TEX_VALUE, float2 uv, int mip ) #

Arguments

Return value

float4 TEXTURE_2D_ARRAY_CUBIC ( Texture2DArray TEX_VALUE, float2 uv, float index ) #

Arguments

Return value

float4 TEXTURE_2D_CATMULL ( Texture2D TEX_VALUE, float2 uv ) #

Arguments

Return value

float4 TEXTURE_2D_ARRAY_CATMULL ( Texture2DArray TEX_VALUE, float2 uv, float index ) #

Arguments

Return value

float4 TEXTURE_3D_CUBIC ( Texture3D TEX_VALUE, float3 uv ) #

Arguments

Return value

TEXTURE ( value NAME, value COORD ) #

Arguments

TEXTURE_BIAS ( value NAME, value COORD, value BIAS ) #

Arguments