62 lines
1.7 KiB
HLSL
62 lines
1.7 KiB
HLSL
//--------------------------------------------------------------------------------------
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// Water.fx
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// Very basic shader that implements D3DTOP_ADDSMOOTH functionality in HLSL, replicating
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// the original fixed-function water rendering behavior.
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//--------------------------------------------------------------------------------------
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float4x4 g_WorldViewProjection : WorldViewProjection;
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float4 g_TextureFactor : TextureFactor;
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//float4 g_Fog : Fog;
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texture2D g_WaterTexture;
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sampler2D g_WaterTextureSampler =
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sampler_state
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{
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Texture = <g_WaterTexture>;
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};
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struct VS_OUTPUT
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{
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float4 Position : POSITION; // vertex position
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float2 TextureUV : TEXCOORD0; // vertex texture coords
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float4 Color : COLOR0;
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//float Fog : FOG;
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};
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VS_OUTPUT RenderSceneVS(float4 inPos : POSITION,
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float4 inDiffuse : COLOR0,
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float4 inTextureUV : TEXCOORD0)
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{
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VS_OUTPUT Output;
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Output.Position = mul(inPos, g_WorldViewProjection);
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Output.TextureUV = inTextureUV;
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Output.Color = inDiffuse;
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// Don't think this is right, but we can use FFP fog unless this is compiled for SM 3.0
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//float4 r0;
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//r0.z = inPos.z * g_WorldViewProjection[3];
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//r0.x = -r0.z + g_Fog.y;
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//Output.Fog.x = r0.x * g_Fog.z;
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return Output;
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}
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float4 RenderScenePS(VS_OUTPUT input) : COLOR0
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{
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float4 texel = tex2D(g_WaterTextureSampler, input.TextureUV);
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float4 result = saturate(texel + (1 - texel) * g_TextureFactor); // equivalent to saturate((texel + g_TextureFactor) - (texel * g_TextureFactor));
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result.a = input.Color.a * g_TextureFactor.a;
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return result;
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}
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technique RenderScene
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{
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pass P0
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{
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VertexShader = compile vs_2_0 RenderSceneVS();
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PixelShader = compile ps_2_0 RenderScenePS();
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}
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} |