D3DXFillTextureTX function
Uses a compiled high-level shader language (HLSL) function to fill each texel of each mipmap level of a texture.
Syntax
HRESULT D3DXFillTextureTX(
_Inout_ LPDIRECT3DTEXTURE9 pTexture,
_In_ LPD3DXTEXTURESHADER pTextureShader
);
Parameters
-
pTexture [in, out]
-
Type: LPDIRECT3DTEXTURE9
Pointer to an IDirect3DTexture9 object, representing the texture to be filled.
-
pTextureShader [in]
-
Type: LPD3DXTEXTURESHADER
Pointer to a ID3DXTextureShader texture shader object.
Return value
Type: HRESULT
If the function succeeds, the return value is D3D_OK. If the function fails, the return value can be one of the following: D3DERR_NOTAVAILABLE, D3DERR_INVALIDCALL.
Remarks
The texture target must be an HLSL function that takes contains the following semantics:
- One input parameter must use a POSITION semantic.
- One input parameter must use a PSIZE semantic.
- The function must return a parameter that uses the COLOR semantic.
The following is an example of such an HLSL function:
float4 TextureGradientFill(
float2 vTexCoord : POSITION,
float2 vTexelSize : PSIZE) : COLOR
{
float r,g, b, xSq,ySq, a;
xSq = 2.f*vTexCoord.x-1.f; xSq *= xSq;
ySq = 2.f*vTexCoord.y-1.f; ySq *= ySq;
a = sqrt(xSq+ySq);
if (a > 1.0f) {
a = 1.0f-(a-1.0f);
}
else if (a < 0.2f) {
a = 0.2f;
}
r = 1-vTexCoord.x;
g = 1-vTexCoord.y;
b = vTexCoord.x;
return float4(r, g, b, a);
};
Note that the input parameters can be in any order, but both input semantics must be represented.
Requirements
| Requirement | Value |
|---|---|
| Header |
|
| Library |
|
See also