#ifdef SHADER_MODEL // make safe to include in resource file to enforce dependency #define FMT_32 0 #define FMT_24 1 #define FMT_16 2 #if SHADER_MODEL >= 0x400 #ifndef VS_BPPZ #define VS_BPPZ 0 #define VS_TME 1 #define VS_FST 1 #endif #ifndef GS_IIP #define GS_IIP 0 #define GS_PRIM 3 #define GS_POINT 0 #define GS_LINE 0 #endif #ifndef PS_FST #define PS_FST 0 #define PS_WMS 0 #define PS_WMT 0 #define PS_FMT FMT_32 #define PS_AEM 0 #define PS_TFX 0 #define PS_TCC 1 #define PS_ATST 1 #define PS_FOG 0 #define PS_CLR1 0 #define PS_FBA 0 #define PS_AOUT 0 #define PS_LTF 1 #define PS_COLCLIP 0 #define PS_DATE 0 #define PS_SPRITEHACK 0 #define PS_TCOFFSETHACK 0 #define PS_POINT_SAMPLER 0 #define PS_SHUFFLE 0 #define PS_READ_BA 0 #define PS_DFMT 0 #define PS_DEPTH_FMT 0 #define PS_PAL_FMT 0 #define PS_CHANNEL_FETCH 0 #define PS_TALES_OF_ABYSS_HLE 0 #define PS_URBAN_CHAOS_HLE 0 #endif struct VS_INPUT { float2 st : TEXCOORD0; float4 c : COLOR0; float q : TEXCOORD1; uint2 p : POSITION0; uint z : POSITION1; uint2 uv : TEXCOORD2; float4 f : COLOR1; }; struct VS_OUTPUT { float4 p : SV_Position; float4 t : TEXCOORD0; #if VS_RTCOPY float4 tp : TEXCOORD1; #endif float4 c : COLOR0; }; struct PS_INPUT { float4 p : SV_Position; float4 t : TEXCOORD0; #if PS_DATE > 0 float4 tp : TEXCOORD1; #endif float4 c : COLOR0; }; struct PS_OUTPUT { float4 c0 : SV_Target0; float4 c1 : SV_Target1; }; Texture2D Texture : register(t0); Texture2D Palette : register(t1); Texture2D RTCopy : register(t2); Texture2D RawTexture : register(t4); SamplerState TextureSampler : register(s0); SamplerState PaletteSampler : register(s1); SamplerState RTCopySampler : register(s2); cbuffer cb0 { float4 VertexScale; float4 VertexOffset; float4 Texture_Scale_Offset; }; cbuffer cb1 { float3 FogColor; float AREF; float4 HalfTexel; float4 WH; float4 MinMax; float2 MinF; float2 TA; uint4 MskFix; int4 ChannelShuffle; float4 TC_OffsetHack; }; cbuffer cb2 { float2 PointSize; }; float4 sample_c(float2 uv) { if (PS_POINT_SAMPLER) { // Weird issue with ATI/AMD cards, // it looks like they add 127/128 of a texel to sampling coordinates // occasionally causing point sampling to erroneously round up. // I'm manually adjusting coordinates to the centre of texels here, // though the centre is just paranoia, the top left corner works fine. // As of 2018 this issue is still present. uv = (trunc(uv * WH.zw) + float2(0.5, 0.5)) / WH.zw; } return Texture.Sample(TextureSampler, uv); } float4 sample_p(float u) { return Palette.Sample(PaletteSampler, u); } float4 sample_rt(float2 uv) { return RTCopy.Sample(RTCopySampler, uv); } float4 fetch_raw_color(int2 xy) { return RawTexture.Load(int3(xy, 0)); } int fetch_raw_depth(int2 xy) { float4 col = RawTexture.Load(int3(xy, 0)); return (int)(col.r * exp2(32.0f)); } float4 fetch_red(int2 xy) { float4 rt; if ((PS_DEPTH_FMT == 1) || (PS_DEPTH_FMT == 2)) { int depth = (fetch_raw_depth(xy)) & 0xFF; rt = (float4)(depth) / 255.0f; } else { rt = fetch_raw_color(xy); } return sample_p(rt.r); } float4 fetch_blue(int2 xy) { float4 rt; if ((PS_DEPTH_FMT == 1) || (PS_DEPTH_FMT == 2)) { int depth = (fetch_raw_depth(xy) >> 16) & 0xFF; rt = (float4)(depth) / 255.0f; } else { rt = fetch_raw_color(xy); } return sample_p(rt.b); } float4 fetch_green(int2 xy) { float4 rt = fetch_raw_color(xy); return sample_p(rt.g); } float4 fetch_alpha(int2 xy) { float4 rt = fetch_raw_color(xy); return sample_p(rt.a); } float4 fetch_rgb(int2 xy) { float4 rt = fetch_raw_color(xy); float4 c = float4(sample_p(rt.r).r, sample_p(rt.g).g, sample_p(rt.b).b, 1.0); return c; } float4 fetch_gXbY(int2 xy) { if ((PS_DEPTH_FMT == 1) || (PS_DEPTH_FMT == 2)) { int depth = fetch_raw_depth(xy); int bg = (depth >> (8 + ChannelShuffle.w)) & 0xFF; return (float4)(bg); } else { int4 rt = (int4)(fetch_raw_color(xy) * 255.0); int green = (rt.g >> ChannelShuffle.w) & ChannelShuffle.z; int blue = (rt.b << ChannelShuffle.y) & ChannelShuffle.x; return (float4)(green | blue) / 255.0; } } #elif SHADER_MODEL <= 0x300 #ifndef VS_BPPZ #define VS_BPPZ 0 #define VS_TME 1 #define VS_FST 1 #define VS_LOGZ 1 #endif #ifndef PS_FST #define PS_FST 0 #define PS_WMS 0 #define PS_WMT 0 #define PS_FMT FMT_32 #define PS_AEM 0 #define PS_TFX 0 #define PS_TCC 0 #define PS_ATST 4 #define PS_FOG 0 #define PS_CLR1 0 #define PS_RT 0 #define PS_LTF 0 #define PS_COLCLIP 0 #define PS_DATE 0 #define PS_PAL_FMT 0 #endif struct VS_INPUT { float4 p : POSITION0; float2 t : TEXCOORD0; float4 c : COLOR0; float4 f : COLOR1; }; struct VS_OUTPUT { float4 p : POSITION; float4 t : TEXCOORD0; #if VS_RTCOPY float4 tp : TEXCOORD1; #endif float4 c : COLOR0; }; struct PS_INPUT { float4 t : TEXCOORD0; #if PS_DATE > 0 float4 tp : TEXCOORD1; #endif float4 c : COLOR0; }; sampler Texture : register(s0); sampler Palette : register(s1); sampler RTCopy : register(s2); sampler1D UMSKFIX : register(s3); sampler1D VMSKFIX : register(s4); float4 vs_params[3]; #define VertexScale vs_params[0] #define VertexOffset vs_params[1] #define Texture_Scale_Offset vs_params[2] float4 ps_params[7]; #define FogColor ps_params[0].bgr #define AREF ps_params[0].a #define HalfTexel ps_params[1] #define WH ps_params[2] #define MinMax ps_params[3] #define MinF ps_params[4].xy #define TA ps_params[4].zw #define TC_OffsetHack ps_params[6] float4 sample_c(float2 uv) { return tex2D(Texture, uv); } float4 sample_p(float u) { return tex2D(Palette, u); } float4 sample_rt(float2 uv) { return tex2D(RTCopy, uv); } #endif #define PS_AEM_FMT (PS_FMT & 3) #if SHADER_MODEL >= 0x400 float4 sample_depth(float2 pos) { float4 t = (float4)(0.0f); if (PS_TALES_OF_ABYSS_HLE == 1) { // Warning: UV can't be used in channel effect int depth = fetch_raw_depth(pos); // Convert msb based on the palette t = Palette.Load(int3((depth >> 8) & 0xFF, 0, 0)); } else if (PS_URBAN_CHAOS_HLE == 1) { // Depth buffer is read as a RGB5A1 texture. The game try to extract the green channel. // So it will do a first channel trick to extract lsb, value is right-shifted. // Then a new channel trick to extract msb which will shifted to the left. // OpenGL uses a FLOAT32 format for the depth so it requires a couple of conversion. // To be faster both steps (msb&lsb) are done in a single pass. // Warning: UV can't be used in channel effect int depth = fetch_raw_depth(pos); // Convert lsb based on the palette t = Palette.Load(int3(depth & 0xFF, 0, 0)); // Msb is easier float green = (float)((depth >> 8) & 0xFF) * 36.0f; green = min(green, 255.0f); t.g += green / 255.0f; } return t; } #endif float4 clamp_wrap_uv(float4 uv) { if(PS_WMS == PS_WMT) { /* if(PS_WMS == 0) { uv = frac(uv); } else if(PS_WMS == 1) { uv = saturate(uv); } else */ if(PS_WMS == 2) { uv = clamp(uv, MinMax.xyxy, MinMax.zwzw); } else if(PS_WMS == 3) { #if SHADER_MODEL >= 0x400 #if PS_FST == 0 // wrap negative uv coords to avoid an off by one error that shifted // textures. Fixes Xenosaga's hair issue. uv = frac(uv); #endif uv = (float4)(((uint4)(uv * WH.xyxy) & MskFix.xyxy) | MskFix.zwzw) / WH.xyxy; #elif SHADER_MODEL <= 0x300 uv.x = tex1D(UMSKFIX, uv.x); uv.y = tex1D(VMSKFIX, uv.y); uv.z = tex1D(UMSKFIX, uv.z); uv.w = tex1D(VMSKFIX, uv.w); #endif } } else { /* if(PS_WMS == 0) { uv.xz = frac(uv.xz); } else if(PS_WMS == 1) { uv.xz = saturate(uv.xz); } else */ if(PS_WMS == 2) { uv.xz = clamp(uv.xz, MinMax.xx, MinMax.zz); } else if(PS_WMS == 3) { #if SHADER_MODEL >= 0x400 #if PS_FST == 0 uv.xz = frac(uv.xz); #endif uv.xz = (float2)(((uint2)(uv.xz * WH.xx) & MskFix.xx) | MskFix.zz) / WH.xx; #elif SHADER_MODEL <= 0x300 uv.x = tex1D(UMSKFIX, uv.x); uv.z = tex1D(UMSKFIX, uv.z); #endif } /* if(PS_WMT == 0) { uv.yw = frac(uv.yw); } else if(PS_WMT == 1) { uv.yw = saturate(uv.yw); } else */ if(PS_WMT == 2) { uv.yw = clamp(uv.yw, MinMax.yy, MinMax.ww); } else if(PS_WMT == 3) { #if SHADER_MODEL >= 0x400 #if PS_FST == 0 uv.yw = frac(uv.yw); #endif uv.yw = (float2)(((uint2)(uv.yw * WH.yy) & MskFix.yy) | MskFix.ww) / WH.yy; #elif SHADER_MODEL <= 0x300 uv.y = tex1D(VMSKFIX, uv.y); uv.w = tex1D(VMSKFIX, uv.w); #endif } } return uv; } float4x4 sample_4c(float4 uv) { float4x4 c; c[0] = sample_c(uv.xy); c[1] = sample_c(uv.zy); c[2] = sample_c(uv.xw); c[3] = sample_c(uv.zw); return c; } float4 sample_4_index(float4 uv) { float4 c; c.x = sample_c(uv.xy).a; c.y = sample_c(uv.zy).a; c.z = sample_c(uv.xw).a; c.w = sample_c(uv.zw).a; #if SHADER_MODEL <= 0x300 if (PS_RT) c *= 128.0f / 255; // D3D9 doesn't support integer operations #else // Denormalize value uint4 i = uint4(c * 255.0f + 0.5f); if (PS_PAL_FMT == 1) { // 4HL c = float4(i & 0xFu) / 255.0f; } else if (PS_PAL_FMT == 2) { // 4HH c = float4(i >> 4u) / 255.0f; } #endif // Most of texture will hit this code so keep normalized float value // 8 bits return c * 255./256 + 0.5/256; } float4x4 sample_4p(float4 u) { float4x4 c; c[0] = sample_p(u.x); c[1] = sample_p(u.y); c[2] = sample_p(u.z); c[3] = sample_p(u.w); return c; } float4 sample_color(float2 st, float q) { if(!PS_FST) st /= q; #if PS_TCOFFSETHACK st += TC_OffsetHack.xy; #endif float4 t; float4x4 c; float2 dd; if (PS_LTF == 0 && PS_AEM_FMT == FMT_32 && PS_PAL_FMT == 0 && PS_WMS < 2 && PS_WMT < 2) { c[0] = sample_c(st); } else { float4 uv; if(PS_LTF) { uv = st.xyxy + HalfTexel; dd = frac(uv.xy * WH.zw); #if SHADER_MODEL >= 0x400 if(PS_FST == 0) { dd = clamp(dd, (float2)0.0, (float2)0.9999999); } #endif } else { uv = st.xyxy; } uv = clamp_wrap_uv(uv); #if PS_PAL_FMT != 0 c = sample_4p(sample_4_index(uv)); #else c = sample_4c(uv); #endif } [unroll] for (uint i = 0; i < 4; i++) { if(PS_AEM_FMT == FMT_32) { #if SHADER_MODEL <= 0x300 if(PS_RT) c[i].a *= 128.0f / 255; #endif } else if(PS_AEM_FMT == FMT_24) { c[i].a = !PS_AEM || any(c[i].rgb) ? TA.x : 0; } else if(PS_AEM_FMT == FMT_16) { c[i].a = c[i].a >= 0.5 ? TA.y : !PS_AEM || any(c[i].rgb) ? TA.x : 0; } } if(PS_LTF) { t = lerp(lerp(c[0], c[1], dd.x), lerp(c[2], c[3], dd.x), dd.y); } else { t = c[0]; } return t; } float4 tfx(float4 t, float4 c) { if(PS_TFX == 0) { if(PS_TCC) { c = c * t * 255.0f / 128; } else { c.rgb = c.rgb * t.rgb * 255.0f / 128; } } else if(PS_TFX == 1) { if(PS_TCC) { c = t; } else { c.rgb = t.rgb; } } else if(PS_TFX == 2) { c.rgb = c.rgb * t.rgb * 255.0f / 128 + c.a; if(PS_TCC) { c.a += t.a; } } else if(PS_TFX == 3) { c.rgb = c.rgb * t.rgb * 255.0f / 128 + c.a; if(PS_TCC) { c.a = t.a; } } return saturate(c); } void datst(PS_INPUT input) { #if PS_DATE > 0 float alpha = sample_rt(input.tp.xy).a; #if SHADER_MODEL >= 0x400 float alpha0x80 = 128. / 255; #else float alpha0x80 = 1; #endif if (PS_DATE == 1 && alpha >= alpha0x80) discard; else if (PS_DATE == 2 && alpha < alpha0x80) discard; #endif } void atst(float4 c) { float a = trunc(c.a * 255 + 0.01); #if 0 switch(Uber_ATST) { case 0: break; case 1: if (a > AREF) discard; break; case 2: if (a < AREF) discard; break; case 3: if (abs(a - AREF) > 0.5f) discard; break; case 4: if (abs(a - AREF) < 0.5f) discard; break; } #endif #if 1 if(PS_ATST == 0) { // nothing to do } else if(PS_ATST == 1) { #if PS_SPRITEHACK == 0 if (a > AREF) discard; #endif } else if(PS_ATST == 2) { if (a < AREF) discard; } else if(PS_ATST == 3) { if (abs(a - AREF) > 0.5f) discard; } else if(PS_ATST == 4) { if (abs(a - AREF) < 0.5f) discard; } #endif } float4 fog(float4 c, float f) { if(PS_FOG) { c.rgb = lerp(FogColor, c.rgb, f); } return c; } float4 ps_color(PS_INPUT input) { datst(input); #if PS_CHANNEL_FETCH == 1 float4 t = fetch_red(int2(input.p.xy)); #elif PS_CHANNEL_FETCH == 2 float4 t = fetch_green(int2(input.p.xy)); #elif PS_CHANNEL_FETCH == 3 float4 t = fetch_blue(int2(input.p.xy)); #elif PS_CHANNEL_FETCH == 4 float4 t = fetch_alpha(int2(input.p.xy)); #elif PS_CHANNEL_FETCH == 5 float4 t = fetch_rgb(int2(input.p.xy)); #elif PS_CHANNEL_FETCH == 6 float4 t = fetch_gXbY(int2(input.p.xy)); #elif PS_DEPTH_FMT > 0 float4 t = sample_depth(input.p.xy); #else float4 t = sample_color(input.t.xy, input.t.w); #endif float4 c = tfx(t, input.c); atst(c); c = fog(c, input.t.z); if (PS_COLCLIP == 2) { c.rgb = 256./255. - c.rgb; } if (PS_COLCLIP > 0) { c.rgb *= c.rgb < 128./255; } if(PS_CLR1) // needed for Cd * (As/Ad/F + 1) blending modes { c.rgb = 1; } return c; } #if SHADER_MODEL >= 0x400 VS_OUTPUT vs_main(VS_INPUT input) { if(VS_BPPZ == 1) // 24 { input.z = input.z & 0xffffff; } else if(VS_BPPZ == 2) // 16 { input.z = input.z & 0xffff; } VS_OUTPUT output; // pos -= 0.05 (1/320 pixel) helps avoiding rounding problems (integral part of pos is usually 5 digits, 0.05 is about as low as we can go) // example: ceil(afterseveralvertextransformations(y = 133)) => 134 => line 133 stays empty // input granularity is 1/16 pixel, anything smaller than that won't step drawing up/left by one pixel // example: 133.0625 (133 + 1/16) should start from line 134, ceil(133.0625 - 0.05) still above 133 float4 p = float4(input.p, input.z, 0) - float4(0.05f, 0.05f, 0, 0); output.p = p * VertexScale - VertexOffset; #if VS_RTCOPY output.tp = (p * VertexScale - VertexOffset) * float4(0.5, -0.5, 0, 0) + 0.5; #endif if(VS_TME) { if(VS_FST) { float2 uv = input.uv - Texture_Scale_Offset.zw; output.t.xy = uv * Texture_Scale_Offset.xy; output.t.zw = uv; } else { output.t.xy = input.st - Texture_Scale_Offset.zw; output.t.w = input.q; } } else { output.t.xy = 0; output.t.w = 1.0f; } output.c = input.c; output.t.z = input.f.r; return output; } #if GS_PRIM == 0 && GS_POINT == 0 [maxvertexcount(1)] void gs_main(point VS_OUTPUT input[1], inout PointStream stream) { stream.Append(input[0]); } #elif GS_PRIM == 0 && GS_POINT == 1 [maxvertexcount(6)] void gs_main(point VS_OUTPUT input[1], inout TriangleStream stream) { // Transform a point to a NxN sprite VS_OUTPUT Point = input[0]; // Get new position float4 lt_p = input[0].p; float4 rb_p = input[0].p + float4(PointSize.x, PointSize.y, 0.0f, 0.0f); float4 lb_p = rb_p; float4 rt_p = rb_p; lb_p.x = lt_p.x; rt_p.y = lt_p.y; // Triangle 1 Point.p = lt_p; stream.Append(Point); Point.p = lb_p; stream.Append(Point); Point.p = rt_p; stream.Append(Point); // Triangle 2 Point.p = lb_p; stream.Append(Point); Point.p = rt_p; stream.Append(Point); Point.p = rb_p; stream.Append(Point); } #elif GS_PRIM == 1 && GS_LINE == 0 [maxvertexcount(2)] void gs_main(line VS_OUTPUT input[2], inout LineStream stream) { #if GS_IIP == 0 input[0].c = input[1].c; #endif stream.Append(input[0]); stream.Append(input[1]); } #elif GS_PRIM == 1 && GS_LINE == 1 [maxvertexcount(6)] void gs_main(line VS_OUTPUT input[2], inout TriangleStream stream) { // Transform a line to a thick line-sprite VS_OUTPUT left = input[0]; VS_OUTPUT right = input[1]; float2 lt_p = input[0].p.xy; float2 rt_p = input[1].p.xy; // Potentially there is faster math float2 line_vector = normalize(rt_p.xy - lt_p.xy); float2 line_normal = float2(line_vector.y, -line_vector.x); float2 line_width = (line_normal * PointSize) / 2; lt_p -= line_width; rt_p -= line_width; float2 lb_p = input[0].p.xy + line_width; float2 rb_p = input[1].p.xy + line_width; #if GS_IIP == 0 left.c = right.c; #endif // Triangle 1 left.p.xy = lt_p; stream.Append(left); left.p.xy = lb_p; stream.Append(left); right.p.xy = rt_p; stream.Append(right); stream.RestartStrip(); // Triangle 2 left.p.xy = lb_p; stream.Append(left); right.p.xy = rt_p; stream.Append(right); right.p.xy = rb_p; stream.Append(right); stream.RestartStrip(); } #elif GS_PRIM == 2 [maxvertexcount(3)] void gs_main(triangle VS_OUTPUT input[3], inout TriangleStream stream) { #if GS_IIP == 0 input[0].c = input[2].c; input[1].c = input[2].c; #endif stream.Append(input[0]); stream.Append(input[1]); stream.Append(input[2]); } #elif GS_PRIM == 3 [maxvertexcount(4)] void gs_main(line VS_OUTPUT input[2], inout TriangleStream stream) { VS_OUTPUT lt = input[0]; VS_OUTPUT rb = input[1]; // flat depth lt.p.z = rb.p.z; // flat fog and texture perspective lt.t.zw = rb.t.zw; // flat color lt.c = rb.c; // Swap texture and position coordinate VS_OUTPUT lb = rb; lb.p.x = lt.p.x; lb.t.x = lt.t.x; VS_OUTPUT rt = rb; rt.p.y = lt.p.y; rt.t.y = lt.t.y; stream.Append(lt); stream.Append(lb); stream.Append(rt); stream.Append(rb); } #endif PS_OUTPUT ps_main(PS_INPUT input) { float4 c = ps_color(input); PS_OUTPUT output; if (PS_SHUFFLE) { uint4 denorm_c = uint4(c * 255.0f + 0.5f); uint2 denorm_TA = uint2(float2(TA.xy) * 255.0f + 0.5f); // Mask will take care of the correct destination if (PS_READ_BA) c.rb = c.bb; else c.rb = c.rr; if (PS_READ_BA) { if (denorm_c.a & 0x80u) c.ga = (float2)(float((denorm_c.a & 0x7Fu) | (denorm_TA.y & 0x80u)) / 255.0f); else c.ga = (float2)(float((denorm_c.a & 0x7Fu) | (denorm_TA.x & 0x80u)) / 255.0f); } else { if (denorm_c.g & 0x80u) c.ga = (float2)(float((denorm_c.g & 0x7Fu) | (denorm_TA.y & 0x80u)) / 255.0f); else c.ga = (float2)(float((denorm_c.g & 0x7Fu) | (denorm_TA.x & 0x80u)) / 255.0f); } } output.c1 = c.a * 2; // used for alpha blending if((PS_DFMT == FMT_16) || PS_AOUT) // 16 bit output { float a = 128.0f / 255; // alpha output will be 0x80 c.a = PS_FBA ? a : step(0.5, c.a) * a; } else if((PS_DFMT == FMT_32) && PS_FBA) { if(c.a < 0.5) c.a += 0.5; } output.c0 = c; return output; } #elif SHADER_MODEL <= 0x300 VS_OUTPUT vs_main(VS_INPUT input) { if(VS_BPPZ == 1) // 24 { input.p.z = fmod(input.p.z, 0x1000000); } else if(VS_BPPZ == 2) // 16 { input.p.z = fmod(input.p.z, 0x10000); } VS_OUTPUT output; // pos -= 0.05 (1/320 pixel) helps avoiding rounding problems (integral part of pos is usually 5 digits, 0.05 is about as low as we can go) // example: ceil(afterseveralvertextransformations(y = 133)) => 134 => line 133 stays empty // input granularity is 1/16 pixel, anything smaller than that won't step drawing up/left by one pixel // example: 133.0625 (133 + 1/16) should start from line 134, ceil(133.0625 - 0.05) still above 133 float4 p = input.p - float4(0.05f, 0.05f, 0, 0); output.p = p * VertexScale - VertexOffset; #if VS_RTCOPY output.tp = (p * VertexScale - VertexOffset) * float4(0.5, -0.5, 0, 0) + 0.5; #endif if(VS_LOGZ) { output.p.z = log2(1.0f + input.p.z) / 32; } if(VS_TME) { float2 t = input.t - Texture_Scale_Offset.zw; if(VS_FST) { output.t.xy = t * Texture_Scale_Offset.xy; output.t.zw = t; } else { output.t.xy = t; output.t.w = input.p.w; } } else { output.t.xy = 0; output.t.w = 1.0f; } output.c = input.c; output.t.z = input.f.b; return output; } float4 ps_main(PS_INPUT input) : COLOR { float4 c = ps_color(input); c.a *= 2; return c; } #endif #endif