82 lines
2.2 KiB
Plaintext
82 lines
2.2 KiB
Plaintext
import Common;
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struct MaterialParameter
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{
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float3 position_TS : POSITION0;
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float3 position_WS : POSITION1;
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float2 texCoords : TEXCOORDS0;
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float3 vertexColor : COLOR0;
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};
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// data used by light environment
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struct LightingParameter
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{
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// world to tangent space
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float3x3 tbn;
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float3 position_TS;
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float3 viewDir_TS;
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};
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// data passed to fragment shader
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struct FragmentParameter
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{
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// clip position has to be the first attribute for some reason????
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float4 position_CS : SV_Position;
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float3 position_TS;
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float3 viewDir_TS;
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float3 normal_WS;
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float3 tangent_WS;
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float3 biTangent_WS;
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float3 position_WS;
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float2 texCoords;
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float3 vertexColor;
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MaterialParameter getMaterialParameter()
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{
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MaterialParameter result;
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result.position_TS = position_TS;
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result.position_WS = position_WS;
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result.texCoords = texCoords;
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result.vertexColor = vertexColor;
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return result;
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}
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LightingParameter getLightingParameter()
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{
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LightingParameter result;
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result.tbn = transpose(float3x3(normalize(tangent_WS), normalize(biTangent_WS), normalize(normal_WS)));
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result.position_TS = position_TS;
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result.viewDir_TS = viewDir_TS;
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return result;
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}
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};
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// data retrieved from VertexData
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struct VertexAttributes
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{
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float3 normal_MS;
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float3 tangent_MS;
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float3 biTangent_MS;
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float3 position_WS;
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float4 position_CS;
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float2 texCoords;
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float3 vertexColor;
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FragmentParameter getParameter(float4x4 transformMatrix)
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{
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float3 tangent_WS = mul(transformMatrix, float4(normalize(tangent_MS), 0)).xyz;
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float3 biTangent_WS = mul(transformMatrix, float4(normalize(biTangent_MS), 0)).xyz;
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float3 normal_WS = mul(transformMatrix, float4(normalize(normal_MS), 0)).xyz;
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// Transforms from world space into tangent space
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float3x3 tbn = transpose(float3x3(tangent_WS, biTangent_WS, normal_WS));
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FragmentParameter result;
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result.position_TS = mul(tbn, position_WS);
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result.viewDir_TS = mul(tbn, pViewParams.cameraPos_WS.xyz - position_WS);
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result.normal_WS = normal_WS;
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result.tangent_WS = tangent_WS;
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result.biTangent_WS = biTangent_WS;
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result.position_WS = position_WS;
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result.position_CS = position_CS;
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result.texCoords = texCoords;
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result.vertexColor = vertexColor;
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return result;
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}
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};
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