Last change
on this file since 5046 was
4904,
checked in by ldelgass, 9 years ago
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Merge serveral changes from trunk. Does not include threading, world space
changes, etc.
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File size:
625 bytes
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Line | |
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1 | /* -*- mode: c++; c-basic-offset: 4; indent-tabs-mode: nil -*- */ |
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2 | /* |
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3 | * Copyright (c) 2004-2013 HUBzero Foundation, LLC |
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4 | * |
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5 | * Authors: |
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6 | * Wei Qiao <qiaow@purdue.edu> |
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7 | */ |
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8 | |
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9 | // Project and sample 3D vector field on a 2D plane |
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10 | |
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11 | #include "common.cg" |
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12 | |
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13 | float4 main(in float3 uvw : TEXCOORD0, |
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14 | uniform sampler3D vel_tex, |
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15 | uniform float3 projection_vector, |
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16 | uniform float timestep, |
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17 | uniform float vmax) : COLOR |
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18 | { |
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19 | float3 velocity = tex3D(vel_tex, uvw).yzw * 2.0 - float3(1.0, 1.0, 1.0); |
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20 | velocity = velocity * projection_vector * vmax * timestep; |
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21 | return float4(velocity, 1); |
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22 | } |
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