diff options
Diffstat (limited to 'xc/extras/Mesa/src/tritemp.h')
| -rw-r--r-- | xc/extras/Mesa/src/tritemp.h | 31 |
1 files changed, 15 insertions, 16 deletions
diff --git a/xc/extras/Mesa/src/tritemp.h b/xc/extras/Mesa/src/tritemp.h index 03a38852c..71e62a31a 100644 --- a/xc/extras/Mesa/src/tritemp.h +++ b/xc/extras/Mesa/src/tritemp.h @@ -1,21 +1,20 @@ -/* $Id: tritemp.h,v 1.15 2001/02/12 20:42:42 brianp Exp $ */ /* * Mesa 3-D graphics library * Version: 3.4.1 - * + * * Copyright (C) 1999-2001 Brian Paul All Rights Reserved. - * + * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: - * + * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. - * + * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL @@ -57,7 +56,7 @@ * * Optionally, one may provide one-time setup code per triangle: * SETUP_CODE - code which is to be executed once per triangle - * + * * The following macro MUST be defined: * INNER_LOOP(LEFT,RIGHT,Y) - code to write a span of pixels. * Something like: @@ -227,7 +226,7 @@ * By stepping rasterization parameters along the major edge, * we can avoid recomputing them at the discontinuity where * the top and bottom edges meet. However, this forces us to - * be able to scan both left-to-right and right-to-left. + * be able to scan both left-to-right and right-to-left. * Also, we must determine whether the major edge is at the * left or right side of the triangle. We do this by * computing the magnitude of the cross-product of the major @@ -445,7 +444,7 @@ dtdy = oneOverArea * (eMaj.dx * eBot_dt - eMaj_dt * eBot.dx); } else { dtdx = 0; - dtdy = 0; + dtdy = 0; } if (VB->TexCoordPtr[0]->size > 2) @@ -553,7 +552,7 @@ * inside the triangle. * * Next we creep down the major edge until we reach that y, - * and compute the corresponding x coordinate on the edge. + * and compute the corresponding x coordinate on the edge. * Then we find the half-integral x that lies on or just * inside the edge. This is the first pixel that might lie in * the interior of the triangle. (We won't know for sure @@ -784,7 +783,7 @@ t0 = VB->TexCoordPtr[0]->data[vLower][1] * T_SCALE; ft = (GLfixed)(t0 * FIXED_SCALE + dtdx * adjx + dtdy * adjy) + FIXED_HALF; fdtOuter = SignedFloatToFixed(dtdy + dxOuter * dtdx); - } + } else { t0 = 0; @@ -801,7 +800,7 @@ sLeft = s0 + (dsdx * adjx + dsdy * adjy) * (1.0F/FIXED_SCALE); dsOuter = dsdy + dxOuter * dsdx; if (VB->TexCoordPtr[0]->size > 1) - { + { t0 = VB->TexCoordPtr[0]->data[vLower][1] * invW; tLeft = t0 + (dtdx * adjx + dtdy * adjy) * (1.0F/FIXED_SCALE); dtOuter = dtdy + dxOuter * dtdx; @@ -809,7 +808,7 @@ tLeft = dtOuter = 0; } if (VB->TexCoordPtr[0]->size > 2) - { + { u0 = VB->TexCoordPtr[0]->data[vLower][2] * invW; uLeft = u0 + (dudx * adjx + dudy * adjy) * (1.0F/FIXED_SCALE); duOuter = dudy + dxOuter * dudx; @@ -817,7 +816,7 @@ uLeft = duOuter = 0; } if (VB->TexCoordPtr[0]->size > 3) - { + { v0 = VB->TexCoordPtr[0]->data[vLower][3] * invW; } else { v0 = invW; @@ -834,7 +833,7 @@ s1Left = s0 + (ds1dx * adjx + ds1dy * adjy) * (1.0F/FIXED_SCALE); ds1Outer = ds1dy + dxOuter * ds1dx; if (VB->TexCoordPtr[0]->size > 1) - { + { t0 = VB->TexCoordPtr[1]->data[vLower][1] * invW; t1Left = t0 + (dt1dx * adjx + dt1dy * adjy) * (1.0F/FIXED_SCALE); dt1Outer = dt1dy + dxOuter * dt1dx; @@ -842,7 +841,7 @@ t1Left = dt1Outer = 0; } if (VB->TexCoordPtr[0]->size > 2) - { + { u0 = VB->TexCoordPtr[1]->data[vLower][2] * invW; u1Left = u0 + (du1dx * adjx + du1dy * adjy) * (1.0F/FIXED_SCALE); du1Outer = du1dy + dxOuter * du1dx; @@ -850,7 +849,7 @@ u1Left = du1Outer = 0; } if (VB->TexCoordPtr[0]->size > 3) - { + { v0 = VB->TexCoordPtr[1]->data[vLower][3] * invW; } else { v0 = invW; |