mirror of
https://github.com/scratchfoundation/bgfx.git
synced 2024-12-12 17:21:08 -05:00
146 lines
4.8 KiB
Text
146 lines
4.8 KiB
Text
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float xll_saturate( float x) {
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return clamp( x, 0.0, 1.0);
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}
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vec2 xll_saturate( vec2 x) {
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return clamp( x, 0.0, 1.0);
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}
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vec3 xll_saturate( vec3 x) {
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return clamp( x, 0.0, 1.0);
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}
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vec4 xll_saturate( vec4 x) {
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return clamp( x, 0.0, 1.0);
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}
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mat2 xll_saturate(mat2 m) {
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return mat2( clamp(m[0], 0.0, 1.0), clamp(m[1], 0.0, 1.0));
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}
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mat3 xll_saturate(mat3 m) {
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return mat3( clamp(m[0], 0.0, 1.0), clamp(m[1], 0.0, 1.0), clamp(m[2], 0.0, 1.0));
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}
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mat4 xll_saturate(mat4 m) {
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return mat4( clamp(m[0], 0.0, 1.0), clamp(m[1], 0.0, 1.0), clamp(m[2], 0.0, 1.0), clamp(m[3], 0.0, 1.0));
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}
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vec2 xll_vecTSel (bvec2 a, vec2 b, vec2 c) {
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return vec2 (a.x ? b.x : c.x, a.y ? b.y : c.y);
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}
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vec3 xll_vecTSel (bvec3 a, vec3 b, vec3 c) {
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return vec3 (a.x ? b.x : c.x, a.y ? b.y : c.y, a.z ? b.z : c.z);
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}
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vec4 xll_vecTSel (bvec4 a, vec4 b, vec4 c) {
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return vec4 (a.x ? b.x : c.x, a.y ? b.y : c.y, a.z ? b.z : c.z, a.w ? b.w : c.w);
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}
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struct v2f {
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vec4 pos;
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vec4 uv;
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vec3 ray;
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};
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uniform sampler2D _CameraDepthTexture;
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uniform sampler2D _CameraNormalsTexture;
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uniform mat4 _CameraToWorld;
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uniform vec4 _LightColor;
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uniform mat4 _LightMatrix0;
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uniform vec4 _LightPos;
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uniform vec4 _LightPositionRange;
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uniform vec4 _LightShadowData;
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uniform samplerCube _LightTexture0;
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uniform sampler2D _LightTextureB0;
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uniform vec4 _ProjectionParams;
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uniform samplerCube _ShadowMapTexture;
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uniform vec3 _WorldSpaceCameraPos;
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uniform vec4 _ZBufferParams;
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uniform vec4 unity_LightmapFade;
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float Luminance( in vec3 c );
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float Linear01Depth( in float z );
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float DecodeFloatRGBA( in vec4 enc );
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float SampleCubeDistance( in vec3 vec );
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float unitySampleShadow( in vec3 vec, in float mydist );
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float ComputeShadow( in vec3 vec, in float z, in vec2 uv );
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vec4 xlat_main( in v2f i );
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float Luminance( in vec3 c ) {
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return dot( c, vec3( 0.220000, 0.707000, 0.0710000));
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}
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float Linear01Depth( in float z ) {
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return (1.00000 / ((_ZBufferParams.x * z) + _ZBufferParams.y ));
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}
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float DecodeFloatRGBA( in vec4 enc ) {
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vec4 kDecodeDot = vec4( 1.00000, 0.00392157, 1.53787e-005, 6.22737e-009);
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return dot( enc, kDecodeDot);
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}
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float SampleCubeDistance( in vec3 vec ) {
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vec4 packDist;
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packDist = textureCube( _ShadowMapTexture, vec);
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return DecodeFloatRGBA( packDist);
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}
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float unitySampleShadow( in vec3 vec, in float mydist ) {
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float z = 0.00781250;
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vec4 shadowVals;
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vec4 shadows;
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shadowVals.x = SampleCubeDistance( (vec + vec3( z, z, z)));
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shadowVals.y = SampleCubeDistance( (vec + vec3( ( -z ), ( -z ), z)));
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shadowVals.z = SampleCubeDistance( (vec + vec3( ( -z ), z, ( -z ))));
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shadowVals.w = SampleCubeDistance( (vec + vec3( z, ( -z ), ( -z ))));
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shadows = xll_vecTSel (lessThan( shadowVals, vec4( vec4( mydist) )), vec4( _LightShadowData.xxxx ), vec4( 1.00000));
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return dot( shadows, vec4( 0.250000));
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}
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float ComputeShadow( in vec3 vec, in float z, in vec2 uv ) {
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float fade;
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float mydist;
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fade = ((z * _LightShadowData.z ) + _LightShadowData.w );
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fade = xll_saturate( fade );
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mydist = (length( vec ) * _LightPositionRange.w );
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mydist *= 0.970000;
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return unitySampleShadow( vec, mydist);
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return 1.00000;
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}
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vec4 xlat_main( in v2f i ) {
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vec2 uv;
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vec4 nspec;
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vec3 normal;
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float depth;
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vec4 vpos;
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vec3 wpos;
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vec3 tolight;
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vec3 lightDir;
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float att;
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float atten;
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float diff;
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vec3 h;
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float spec;
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vec4 res;
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float fade;
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i.ray = (i.ray * (_ProjectionParams.z / i.ray.z ));
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uv = (i.uv.xy / i.uv.w );
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nspec = texture2D( _CameraNormalsTexture, uv);
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normal = ((nspec.xyz * 2.00000) - 1.00000);
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normal = normalize( normal );
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depth = texture2D( _CameraDepthTexture, uv).x ;
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depth = Linear01Depth( depth);
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vpos = vec4( (i.ray * depth), 1.00000);
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wpos = ( _CameraToWorld * vpos ).xyz ;
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tolight = (wpos - _LightPos.xyz );
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lightDir = ( -normalize( tolight ) );
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att = (dot( tolight, tolight) * _LightPos.w );
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atten = texture2D( _LightTextureB0, vec2( vec2( att))).w ;
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atten *= ComputeShadow( tolight, vpos.z , uv);
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atten *= textureCube( _LightTexture0, ( _LightMatrix0 * vec4( wpos, 1.00000) ).xyz ).w ;
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diff = max( 0.000000, dot( lightDir, normal));
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h = normalize( (lightDir - normalize( (wpos - _WorldSpaceCameraPos) )) );
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spec = pow( max( 0.000000, dot( h, normal)), (nspec.w * 128.000));
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spec *= xll_saturate( atten );
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res.xyz = (_LightColor.xyz * (diff * atten));
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res.w = (spec * Luminance( _LightColor.xyz ));
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fade = ((vpos.z * unity_LightmapFade.z ) + unity_LightmapFade.w );
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res *= xll_saturate( (1.00000 - fade) );
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return exp2( ( -res ) );
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}
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varying vec4 xlv_TEXCOORD0;
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varying vec3 xlv_TEXCOORD1;
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void main() {
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vec4 xl_retval;
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v2f xlt_i;
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xlt_i.pos = vec4(0.0);
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xlt_i.uv = vec4( xlv_TEXCOORD0);
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xlt_i.ray = vec3( xlv_TEXCOORD1);
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xl_retval = xlat_main( xlt_i);
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gl_FragData[0] = vec4( xl_retval);
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}
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