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-rw-r--r--Src/Winamp/plush/PF_TRANS.C263
1 files changed, 263 insertions, 0 deletions
diff --git a/Src/Winamp/plush/PF_TRANS.C b/Src/Winamp/plush/PF_TRANS.C
new file mode 100644
index 00000000..d82365ee
--- /dev/null
+++ b/Src/Winamp/plush/PF_TRANS.C
@@ -0,0 +1,263 @@
+/******************************************************************************
+Plush Version 1.2
+pf_trans.c
+Solid Translucent Rasterizers
+Copyright (c) 1996-2000, Justin Frankel
+******************************************************************************/
+
+#include "plush.h"
+#include "putface.h"
+
+void plPF_TransF(pl_Cam *cam, pl_Face *TriFace) {
+ pl_uChar i0, i1, i2;
+ pl_uChar *gmem = cam->frameBuffer;
+ pl_uChar *remap = TriFace->Material->_ReMapTable;
+ pl_ZBuffer *zbuf = cam->zBuffer;
+ pl_sInt32 X1, X2, dX1=0, dX2=0, XL1, XL2;
+ pl_ZBuffer Z1, ZL, dZ1=0, dZL=0, dZ2=0, Z2;
+ pl_sInt32 Y1, Y2, Y0, dY;
+ pl_uInt16 *lookuptable = TriFace->Material->_AddTable;
+ pl_uChar stat;
+ pl_sInt32 bc = (pl_sInt32) TriFace->fShade*TriFace->Material->_tsfact;
+ pl_Bool zb = (zbuf&&TriFace->Material->zBufferable) ? 1 : 0;
+
+ PUTFACE_SORT();
+
+ if (bc < 0) bc=0;
+ if (bc > (pl_sInt32) TriFace->Material->_tsfact-1) bc=TriFace->Material->_tsfact-1;
+ remap+=bc;
+
+ X2 = X1 = TriFace->Scrx[i0];
+ Z2 = Z1 = TriFace->Scrz[i0];
+ Y0 = (TriFace->Scry[i0]+(1<<19))>>20;
+ Y1 = (TriFace->Scry[i1]+(1<<19))>>20;
+ Y2 = (TriFace->Scry[i2]+(1<<19))>>20;
+
+ dY = Y2 - Y0;
+ if (dY) {
+ dX2 = (TriFace->Scrx[i2] - X1) / dY;
+ dZ2 = (TriFace->Scrz[i2] - Z1) / dY;
+ }
+ dY = Y1-Y0;
+ if (dY) {
+ dX1 = (TriFace->Scrx[i1] - X1) / dY;
+ dZ1 = (TriFace->Scrz[i1] - Z1) / dY;
+ if (dX2 < dX1) {
+ dX2 ^= dX1; dX1 ^= dX2; dX2 ^= dX1;
+ dZL = dZ1; dZ1 = dZ2; dZ2 = dZL;
+ stat = 2;
+ } else stat = 1;
+ } else {
+ if (TriFace->Scrx[i1] > X1) {
+ X2 = TriFace->Scrx[i1];
+ Z2 = TriFace->Scrz[i1];
+ stat= 2|4;
+ } else {
+ X1 = TriFace->Scrx[i1];
+ Z1 = TriFace->Scrz[i1];
+ stat= 1|8;
+ }
+ }
+
+ gmem += (Y0 * cam->ScreenWidth);
+ zbuf += (Y0 * cam->ScreenWidth);
+ if (zb) {
+ XL1 = (((dX1-dX2)*dY+(1<<19))>>20);
+ if (XL1) dZL = ((dZ1-dZ2)*dY)/XL1;
+ else {
+ XL1 = ((X2-X1+(1<<19))>>20);
+ if (XL1) dZL = (Z2-Z1)/XL1;
+ }
+ }
+
+ while (Y0 < Y2) {
+ if (Y0 == Y1) {
+ dY = Y2 - ((TriFace->Scry[i1]+(1<<19))>>20);
+ if (dY) {
+ if (stat & 1) {
+ X1 = TriFace->Scrx[i1];
+ dX1 = (TriFace->Scrx[i2]-TriFace->Scrx[i1])/dY;
+ }
+ if (stat & 2) {
+ X2 = TriFace->Scrx[i1];
+ dX2 = (TriFace->Scrx[i2]-TriFace->Scrx[i1])/dY;
+ }
+ if (stat & 4) {
+ X1 = TriFace->Scrx[i0];
+ dX1 = (TriFace->Scrx[i2]-TriFace->Scrx[i0])/dY;
+ }
+ if (stat & 8) {
+ X2 = TriFace->Scrx[i0];
+ dX2 = (TriFace->Scrx[i2]-TriFace->Scrx[i0])/dY;
+ }
+ dZ1 = (TriFace->Scrz[i2]- Z1)/dY;
+ }
+ }
+ XL1 = (X1+(1<<19))>>20;
+ XL2 = (X2+(1<<19))>>20;
+ ZL = Z1;
+ if ((XL2-XL1) > 0) {
+ XL2 -= XL1;
+ zbuf += XL1;
+ gmem += XL1;
+ XL1 += XL2;
+ if (zb) do {
+ if (*zbuf < ZL) {
+ *zbuf = ZL;
+ *gmem = remap[lookuptable[*gmem]];
+ }
+ gmem++;
+ zbuf++;
+ ZL += dZL;
+ } while (--XL2);
+ else do *gmem++ = remap[lookuptable[*gmem]]; while (--XL2);
+ gmem -= XL1;
+ zbuf -= XL1;
+ }
+ gmem += cam->ScreenWidth;
+ zbuf += cam->ScreenWidth;
+ Z1 += dZ1;
+ X1 += dX1;
+ X2 += dX2;
+ Y0 ++;
+ }
+}
+
+void plPF_TransG(pl_Cam *cam, pl_Face *TriFace) {
+ pl_uChar i0, i1, i2;
+ pl_uChar *gmem = cam->frameBuffer;
+ pl_uChar *remap = TriFace->Material->_ReMapTable;
+ pl_ZBuffer *zbuf = cam->zBuffer;
+ pl_sInt32 X1, X2, dX1=0, dX2=0, XL1, XL2;
+ pl_ZBuffer Z1, ZL, dZ1=0, dZL=0, dZ2=0, Z2;
+ pl_sInt32 dC1=0, dCL=0, CL, C1, C2, dC2=0;
+ pl_sInt32 Y1, Y2, Y0, dY;
+ pl_Float nc = (TriFace->Material->_tsfact*65536.0f);
+ pl_uInt16 *lookuptable = TriFace->Material->_AddTable;
+ pl_Bool zb = (zbuf&&TriFace->Material->zBufferable) ? 1 : 0;
+ pl_uChar stat;
+
+ pl_sInt32 maxColor=((TriFace->Material->_tsfact-1)<<16);
+ pl_sInt32 maxColorNonShift=TriFace->Material->_tsfact-1;
+
+ PUTFACE_SORT();
+
+ C1 = C2 = (pl_sInt32) (TriFace->Shades[i0]*nc);
+ X2 = X1 = TriFace->Scrx[i0];
+ Z2 = Z1 = TriFace->Scrz[i0];
+ Y0 = (TriFace->Scry[i0]+(1<<19))>>20;
+ Y1 = (TriFace->Scry[i1]+(1<<19))>>20;
+ Y2 = (TriFace->Scry[i2]+(1<<19))>>20;
+
+ dY = Y2 - Y0;
+ if (dY) {
+ dX2 = (TriFace->Scrx[i2] - X1) / dY;
+ dC2 = (pl_sInt32) ((TriFace->Shades[i2]*nc - C1) / dY);
+ dZ2 = (TriFace->Scrz[i2] - Z1) / dY;
+ }
+ dY = Y1-Y0;
+ if (dY) {
+ dX1 = (TriFace->Scrx[i1] - X1) / dY;
+ dZ1 = (TriFace->Scrz[i1] - Z1) / dY;
+ dC1 = (pl_sInt32) ((TriFace->Shades[i1]*nc - C1) / dY);
+ if (dX2 < dX1) {
+ dX2 ^= dX1; dX1 ^= dX2; dX2 ^= dX1;
+ dC2 ^= dC1; dC1 ^= dC2; dC2 ^= dC1;
+ dZL = dZ1; dZ1 = dZ2; dZ2 = dZL;
+ stat = 2;
+ } else stat = 1;
+ } else {
+ if (TriFace->Scrx[i1] > X1) {
+ X2 = TriFace->Scrx[i1];
+ Z2 = TriFace->Scrz[i1];
+ C2 = (pl_sInt32) (TriFace->Shades[i1]*nc);
+ stat = 2|4;
+ } else {
+ X1 = TriFace->Scrx[i1];
+ Z1 = TriFace->Scrz[i1];
+ C1 = (pl_sInt32) (TriFace->Shades[i1]*nc);
+ stat = 1|8;
+ }
+ }
+
+ gmem += (Y0 * cam->ScreenWidth);
+ zbuf += (Y0 * cam->ScreenWidth);
+ XL1 = (((dX1-dX2)*dY+(1<<19))>>20);
+ if (XL1) {
+ dCL = ((dC1-dC2)*dY)/XL1;
+ dZL = ((dZ1-dZ2)*dY)/XL1;
+ } else {
+ XL1 = ((X2-X1+(1<<19))>>20);
+ if (XL1) {
+ dCL = (C2-C1)/XL1;
+ dZL = (Z2-Z1)/XL1;
+ }
+ }
+
+ while (Y0 < Y2) {
+ if (Y0 == Y1) {
+ dY = Y2 - ((TriFace->Scry[i1]+(1<<19))>>20);
+ if (dY) {
+ if (stat & 1) {
+ X1 = TriFace->Scrx[i1];
+ dX1 = (TriFace->Scrx[i2]-TriFace->Scrx[i1])/dY;
+ }
+ if (stat & 2) {
+ X2 = TriFace->Scrx[i1];
+ dX2 = (TriFace->Scrx[i2]-TriFace->Scrx[i1])/dY;
+ }
+ if (stat & 4) {
+ X1 = TriFace->Scrx[i0];
+ dX1 = (TriFace->Scrx[i2]-TriFace->Scrx[i0])/dY;
+ }
+ if (stat & 8) {
+ X2 = TriFace->Scrx[i0];
+ dX2 = (TriFace->Scrx[i2]-TriFace->Scrx[i0])/dY;
+ }
+ dZ1 = (TriFace->Scrz[i2]-Z1)/dY;
+ dC1 = (pl_sInt32) ((TriFace->Shades[i2]*nc - C1) / dY);
+ }
+ }
+ CL = C1;
+ XL1 = (X1+(1<<19))>>20;
+ XL2 = (X2+(1<<19))>>20;
+ ZL = Z1;
+ if ((XL2-XL1) > 0) {
+ XL2 -= XL1;
+ zbuf += XL1;
+ gmem += XL1;
+ XL1 += XL2;
+ if (zb) do {
+ if (*zbuf < ZL) {
+ int av;
+ if (CL >= maxColor) av=maxColorNonShift;
+ else if (CL > 0) av=CL>>16;
+ else av=0;
+ *zbuf = ZL;
+ *gmem = remap[av + lookuptable[*gmem]];
+ }
+ gmem++;
+ CL += dCL;
+ zbuf++;
+ ZL += dZL;
+ } while (--XL2);
+ else do {
+ int av;
+ if (CL >= maxColor) av=maxColorNonShift;
+ else if (CL > 0) av=CL>>16;
+ else av=0;
+ *gmem++ = remap[av + lookuptable[*gmem]];
+ CL += dCL;
+ } while (--XL2);
+ gmem -= XL1;
+ zbuf -= XL1;
+ }
+ gmem += cam->ScreenWidth;
+ zbuf += cam->ScreenWidth;
+ Z1 += dZ1;
+ X1 += dX1;
+ X2 += dX2;
+ C1 += dC1;
+ Y0++;
+ }
+}
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