diff options
Diffstat (limited to 'src/mesa/swrast/s_linetemp.h')
| -rw-r--r-- | src/mesa/swrast/s_linetemp.h | 48 |
1 files changed, 26 insertions, 22 deletions
diff --git a/src/mesa/swrast/s_linetemp.h b/src/mesa/swrast/s_linetemp.h index 61c338ac69a..b7b434771ee 100644 --- a/src/mesa/swrast/s_linetemp.h +++ b/src/mesa/swrast/s_linetemp.h @@ -1,8 +1,8 @@ /* * Mesa 3-D graphics library - * Version: 6.5 + * Version: 6.5.3 * - * Copyright (C) 1999-2005 Brian Paul All Rights Reserved. + * Copyright (C) 1999-2007 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"), @@ -336,29 +336,33 @@ NAME( GLcontext *ctx, const SWvertex *vert0, const SWvertex *vert1 ) #endif #ifdef INTERP_VARYING interpFlags |= SPAN_VARYING; - { /* XXX review this */ + { const GLfloat invLen = 1.0F / numPixels; + const GLbitfield inputsUsed = ctx->FragmentProgram._Current ? + ctx->FragmentProgram._Current->Base.InputsRead : 0x0; + const GLfloat invw0 = vert0->win[3]; + const GLfloat invw1 = vert1->win[3]; GLuint v; for (v = 0; v < MAX_VARYING; v++) { - const GLfloat invw0 = vert0->win[3]; - const GLfloat invw1 = vert1->win[3]; - GLfloat ds, dt, dr, dq; - span.var[v][0] = invw0 * vert0->varying[v][0]; - span.var[v][1] = invw0 * vert0->varying[v][1]; - span.var[v][2] = invw0 * vert0->varying[v][2]; - span.var[v][3] = invw0 * vert0->varying[v][3]; - ds = (invw1 * vert1->varying[v][0]) - span.var[v][0]; - dt = (invw1 * vert1->varying[v][1]) - span.var[v][1]; - dr = (invw1 * vert1->varying[v][2]) - span.var[v][2]; - dq = (invw1 * vert1->varying[v][3]) - span.var[v][3]; - span.varStepX[v][0] = ds * invLen; - span.varStepX[v][1] = dt * invLen; - span.varStepX[v][2] = dr * invLen; - span.varStepX[v][3] = dq * invLen; - span.varStepY[v][0] = 0.0F; - span.varStepY[v][1] = 0.0F; - span.varStepY[v][2] = 0.0F; - span.varStepY[v][3] = 0.0F; + if (inputsUsed & FRAG_BIT_VAR(v)) { + GLfloat ds, dt, dr, dq; + span.var[v][0] = invw0 * vert0->varying[v][0]; + span.var[v][1] = invw0 * vert0->varying[v][1]; + span.var[v][2] = invw0 * vert0->varying[v][2]; + span.var[v][3] = invw0 * vert0->varying[v][3]; + ds = (invw1 * vert1->varying[v][0]) - span.var[v][0]; + dt = (invw1 * vert1->varying[v][1]) - span.var[v][1]; + dr = (invw1 * vert1->varying[v][2]) - span.var[v][2]; + dq = (invw1 * vert1->varying[v][3]) - span.var[v][3]; + span.varStepX[v][0] = ds * invLen; + span.varStepX[v][1] = dt * invLen; + span.varStepX[v][2] = dr * invLen; + span.varStepX[v][3] = dq * invLen; + span.varStepY[v][0] = 0.0F; + span.varStepY[v][1] = 0.0F; + span.varStepY[v][2] = 0.0F; + span.varStepY[v][3] = 0.0F; + } } } #endif |