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//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of NVIDIA CORPORATION nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Copyright (c) 2018 NVIDIA Corporation. All rights reserved.
#include "common_buffers.hlsl"
#include "lighting.hlsl"
SamplerState defaultSampler : register(s0);
Texture2D diffuseTexture : register(t0);
Texture2D bonesTexture : register(t1);
struct VS_INPUT
{
float3 position : POSITION0;
float3 normal : NORMAL0;
float2 uv : TEXCOORD0;
int3 boneIndices : TEXCOORD5;
float3 boneWeights : TEXCOORD6;
};
struct VS_OUTPUT
{
float4 position : SV_POSITION;
float4 worldPos : POSITION0;
float2 uv : TEXCOORD0;
float3 normal : NORMAL0;
};
float4x4 getBoneMatrix(int boneIndex)
{
float4x4 boneMatrix;
boneMatrix[0] = bonesTexture.Load(int3(0, boneIndex, 0));
boneMatrix[1] = bonesTexture.Load(int3(1, boneIndex, 0));
boneMatrix[2] = bonesTexture.Load(int3(2, boneIndex, 0));
boneMatrix[3] = bonesTexture.Load(int3(3, boneIndex, 0));
return boneMatrix;
}
float4x4 accumulate_skin(float4 boneIndices0, float4 boneWeights0)
{
float4x4 result = boneWeights0.x * getBoneMatrix(boneIndices0.x);
result = result + boneWeights0.y * getBoneMatrix(boneIndices0.y);
result = result + boneWeights0.z * getBoneMatrix(boneIndices0.z);
result = result + boneWeights0.w * getBoneMatrix(boneIndices0.w);
return result;
}
VS_OUTPUT VS(VS_INPUT iV)
{
VS_OUTPUT oV;
//float4x4 boneMatrix = accumulate_skin(iV.boneIndices, iV.boneWeights);
float4x4 boneMatrix = accumulate_skin(float4(iV.boneIndices, 0), float4(iV.boneWeights, 0));
float3 skinnedPos = mul(float4(iV.position, 1.0f), boneMatrix);
float4 worldSpacePos = mul(float4(skinnedPos, 1.0f), model);
float4 eyeSpacePos = mul(worldSpacePos, view);
oV.position = mul(eyeSpacePos, projection);
oV.worldPos = worldSpacePos;
// normals
float3 localNormal = mul(float4(skinnedPos, 0.0f), boneMatrix);
float3 worldNormal = mul(float4(localNormal, 0.0f), model);
oV.normal = worldNormal;
oV.uv = iV.uv;
return oV;
}
float4 PS(VS_OUTPUT iV) : SV_Target0
{
float4 textureColor = diffuseTexture.Sample(defaultSampler, iV.uv);
return CalcPixelLight(textureColor, iV.worldPos, iV.normal);
}
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