diff options
| -rw-r--r-- | src/mesa/swrast/s_stencil.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/src/mesa/swrast/s_stencil.c b/src/mesa/swrast/s_stencil.c index 488ccc0559f..a28721bbc12 100644 --- a/src/mesa/swrast/s_stencil.c +++ b/src/mesa/swrast/s_stencil.c @@ -1,10 +1,10 @@ -/* $Id: s_stencil.c,v 1.13 2001/12/17 04:54:35 brianp Exp $ */ +/* $Id: s_stencil.c,v 1.14 2002/01/08 14:56:51 brianp Exp $ */ /* * Mesa 3-D graphics library - * Version: 3.5 + * Version: 4.1 * - * Copyright (C) 1999-2001 Brian Paul All Rights Reserved. + * Copyright (C) 1999-2002 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"), @@ -1120,6 +1120,8 @@ _mesa_write_stencil_span( GLcontext *ctx, GLint n, GLint x, GLint y, const GLstencil stencil[] ) { SWcontext *swrast = SWRAST_CONTEXT(ctx); + const GLstencil *ssrc = stencil; + if (y < 0 || y >= ctx->DrawBuffer->Height || x + n <= 0 || x >= ctx->DrawBuffer->Width) { /* span is completely outside framebuffer */ @@ -1130,7 +1132,7 @@ _mesa_write_stencil_span( GLcontext *ctx, GLint n, GLint x, GLint y, GLint dx = -x; x = 0; n -= dx; - stencil += dx; + ssrc += dx; } if (x + n > ctx->DrawBuffer->Width) { GLint dx = x + n - ctx->DrawBuffer->Width; @@ -1141,16 +1143,16 @@ _mesa_write_stencil_span( GLcontext *ctx, GLint n, GLint x, GLint y, } if (swrast->Driver.WriteStencilSpan) { - (*swrast->Driver.WriteStencilSpan)( ctx, n, x, y, stencil, NULL ); + (*swrast->Driver.WriteStencilSpan)( ctx, n, x, y, ssrc, NULL ); } else if (ctx->DrawBuffer->Stencil) { GLstencil *s = STENCIL_ADDRESS( x, y ); #if STENCIL_BITS == 8 - MEMCPY( s, stencil, n * sizeof(GLstencil) ); + MEMCPY( s, ssrc, n * sizeof(GLstencil) ); #else GLuint i; for (i=0;i<n;i++) - s[i] = stencil[i]; + s[i] = ssrc[i]; #endif } } |