138 lines
3.1 KiB
HLSL
138 lines
3.1 KiB
HLSL
#include "ShaderConstants.fxh"
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struct VS_Input {
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float3 position : POSITION;
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float4 normal : NORMAL;
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float2 texCoords : TEXCOORD_0;
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#ifdef COLOR_BASED
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float4 color : COLOR;
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#endif
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#ifdef INSTANCEDSTEREO
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uint instanceID : SV_InstanceID;
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#endif
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};
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struct PS_Input {
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float4 position : SV_Position;
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float4 light : LIGHT;
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float4 fogColor : FOG_COLOR;
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#ifdef GLINT
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// there is some alignment issue on the Windows Phone 1320 that causes the position
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// to get corrupted if this is two floats and last in the struct memory wise
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float4 layerUV : GLINT_UVS;
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#endif
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#ifdef USE_OVERLAY
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float4 overlayColor : OVERLAY_COLOR;
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#endif
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float2 uv : TEXCOORD_0_FB_MSAA;
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#ifdef INSTANCEDSTEREO
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uint instanceID : SV_InstanceID;
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#endif
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};
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static const float AMBIENT = 0.45;
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static const float XFAC = -0.1;
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static const float ZFAC = 0.1;
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float4 TransformRGBA8_SNORM(const float4 RGBA8_SNORM) {
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#ifdef R8G8B8A8_SNORM_UNSUPPORTED
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return RGBA8_SNORM * float(2.0).xxxx - float(1.0).xxxx;
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#else
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return RGBA8_SNORM;
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#endif
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}
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float lightIntensity(const float4 position, const float4 normal) {
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#ifdef FANCY
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#if !defined(INSTANCEDSTEREO)
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float3 N = normalize(mul(WORLD, normal)).xyz;
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#else
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float3 N = normalize(mul(WORLD_STEREO, normal)).xyz;
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#endif
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N.y *= TILE_LIGHT_COLOR.a;
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//take care of double sided polygons on materials without culling
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#ifdef FLIP_BACKFACES
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#if !defined(INSTANCEDSTEREO)
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float3 viewDir = normalize((mul(WORLD, position)).xyz);
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#else
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float3 viewDir = normalize((mul(WORLD_STEREO, position)).xyz);
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#endif
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if (dot(N, viewDir) > 0.0) {
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N *= -1.0;
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}
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#endif
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float yLight = (1.0 + N.y) * 0.5;
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return yLight * (1.0 - AMBIENT) + N.x*N.x * XFAC + N.z*N.z * ZFAC + AMBIENT;
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#else
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return 1.0;
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#endif
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}
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#ifdef GLINT
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float2 calculateLayerUV(float2 origUV, float offset, float rotation) {
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float2 uv = origUV;
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uv -= 0.5;
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float rsin = sin(rotation);
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float rcos = cos(rotation);
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uv = mul(uv, float2x2(rcos, -rsin, rsin, rcos));
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uv.x += offset;
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uv += 0.5;
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return uv * GLINT_UV_SCALE;
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}
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#endif
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void main(in VS_Input VSInput, out PS_Input PSInput) {
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#ifdef INSTANCEDSTEREO
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int i = VSInput.instanceID;
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PSInput.position = mul(WORLDVIEWPROJ_STEREO[i], float4(VSInput.position, 1));
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PSInput.instanceID = i;
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#else
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PSInput.position = mul(WORLDVIEWPROJ, float4(VSInput.position, 1));
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#endif
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float4 normal = TransformRGBA8_SNORM(VSInput.normal);
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float L = lightIntensity(float4(VSInput.position, 1), normal);
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#ifdef USE_OVERLAY
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L += OVERLAY_COLOR.a * 0.35;
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PSInput.overlayColor = OVERLAY_COLOR;
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#endif
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PSInput.light = float4(L.xxx * TILE_LIGHT_COLOR.rgb, 1.0);
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#ifdef COLOR_BASED
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PSInput.light *= VSInput.color;
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#endif
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#ifndef NO_TEXTURE
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PSInput.uv = VSInput.texCoords;
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#endif
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#ifdef USE_UV_ANIM
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PSInput.uv.xy += UV_ANIM.xy;
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#endif
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#ifdef GLINT
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PSInput.layerUV.xy = calculateLayerUV(VSInput.texCoords, UV_OFFSET.x, UV_ROTATION.x);
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PSInput.layerUV.zw = calculateLayerUV(VSInput.texCoords, UV_OFFSET.y, UV_ROTATION.y);
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#endif
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//fog
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PSInput.fogColor.rgb = FOG_COLOR.rgb;
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PSInput.fogColor.a = clamp(((PSInput.position.z / RENDER_DISTANCE) - FOG_CONTROL.x) / (FOG_CONTROL.y - FOG_CONTROL.x), 0.0, 1.0);
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}
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