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65 lines
1.8 KiB
Plaintext
65 lines
1.8 KiB
Plaintext
#include "common_cbuffers_fxc.h"
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CBUFFER_PERMODEL(register(b0)) // model matrix
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CBUFFER_PERFRAME(register(b1)) // view matrix
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CBUFFER_PERSCENE(register(b2)) // proj matrix
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#include "common_sky_fxc.h"
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cbuffer Sky_CBuffer_t : register(b3)
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{
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Sky_t cSky;
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};
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#include "common_vs_fxc.h"
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#define TEXEL_XINCR (cSky.vTextureSizeInfo.x)
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#define TEXEL_YINCR (cSky.vTextureSizeInfo.y)
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#define U_TO_PIXEL_COORD_SCALE (cSky.vTextureSizeInfo.z)
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#define V_TO_PIXEL_COORD_SCALE (cSky.vTextureSizeInfo.w)
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struct VS_INPUT
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{
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float4 vPos : POSITION;
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float2 vTexCoord0 : TEXCOORD0;
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};
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struct VS_OUTPUT
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{
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float4 projPos : SV_POSITION;
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float2 baseTexCoord00 : TEXCOORD0;
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float2 baseTexCoord01 : TEXCOORD1;
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float2 baseTexCoord10 : TEXCOORD2;
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float2 baseTexCoord11 : TEXCOORD3;
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float2 baseTexCoord_In_Pixels: TEXCOORD4;
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};
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VS_OUTPUT main( const VS_INPUT v )
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{
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VS_OUTPUT o = ( VS_OUTPUT )0;
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o.projPos = ComputeProjPos(v.vPos.xyz, cModelMatrix, cViewMatrix, cProjMatrix);
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float4 vTexCoordInput = { v.vTexCoord0.x, v.vTexCoord0.y, 0.0f, 1.0f };
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float2 vTexCoord;
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vTexCoord.x = dot( vTexCoordInput.xyzw, cSky.mBaseTexCoordTransform[0] );
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vTexCoord.y = dot( vTexCoordInput.xyzw, cSky.mBaseTexCoordTransform[1] );
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// Compute quantities needed for pixel shader texture lerping
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o.baseTexCoord00.x = vTexCoord.x - TEXEL_XINCR;
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o.baseTexCoord00.y = vTexCoord.y - TEXEL_YINCR;
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o.baseTexCoord10.x = vTexCoord.x + TEXEL_XINCR;
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o.baseTexCoord10.y = vTexCoord.y - TEXEL_YINCR;
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o.baseTexCoord01.x = vTexCoord.x - TEXEL_XINCR;
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o.baseTexCoord01.y = vTexCoord.y + TEXEL_YINCR;
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o.baseTexCoord11.x = vTexCoord.x + TEXEL_XINCR;
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o.baseTexCoord11.y = vTexCoord.y + TEXEL_YINCR;
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o.baseTexCoord_In_Pixels.xy = o.baseTexCoord00.xy;
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o.baseTexCoord_In_Pixels.x *= U_TO_PIXEL_COORD_SCALE;
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o.baseTexCoord_In_Pixels.y *= V_TO_PIXEL_COORD_SCALE;
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return o;
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}
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