lrp (Vertex Shader)
Interpolates linearly between the second and third source registers by a proportion specified in the first source register.
Syntax
| lrp dst, src0, src1, src2, src3 |
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where
- dst is the destination register.
- src0 is a source register.
- src1 is a source register.
- src2 is a source register.
- src3 is a source register.
Remarks
| Vertex shader versions | 1_1 | 2_0 | 2_x | 2_sw | 3_0 | 3_sw |
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| lrp | | x | x | x | x | x |
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This instruction performs the linear interpolation based on the following formula.
dest.x = src0.x * (src1.x - src2.x) + src2.x;
dest.y = src0.y * (src1.y - src2.y) + src2.y;
dest.z = src0.z * (src1.z - src2.z) + src2.z;
dest.w = src0.w * (src1.w - src2.w) + src2.w;
Instruction Information
| Minimum operating system | Windows 98 |
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