diff options
Diffstat (limited to 'src/mesa/swrast/s_alphabuf.c')
| -rw-r--r-- | src/mesa/swrast/s_alphabuf.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/src/mesa/swrast/s_alphabuf.c b/src/mesa/swrast/s_alphabuf.c index 9d88c60920..8c324a4588 100644 --- a/src/mesa/swrast/s_alphabuf.c +++ b/src/mesa/swrast/s_alphabuf.c @@ -1,4 +1,4 @@ -/* $Id: s_alphabuf.c,v 1.6 2001/03/12 00:48:41 gareth Exp $ */ +/* $Id: s_alphabuf.c,v 1.7 2001/05/11 18:58:32 brianp Exp $ */ /* * Mesa 3-D graphics library @@ -164,6 +164,7 @@ _mesa_clear_alpha_buffers( GLcontext *ctx ) GLint j; GLint rowLen = ctx->DrawBuffer->_Xmax - ctx->DrawBuffer->_Xmin + 1; GLint rows = ctx->DrawBuffer->_Ymax - ctx->DrawBuffer->_Ymin + 1; + GLint width = ctx->DrawBuffer->Width; GLchan *aptr = buffer + ctx->DrawBuffer->_Ymin * ctx->DrawBuffer->Width + ctx->DrawBuffer->_Xmin; @@ -175,13 +176,19 @@ _mesa_clear_alpha_buffers( GLcontext *ctx ) #else #error unexpected CHAN_BITS value #endif - aptr += rowLen; + aptr += width; } } else { /* clear whole buffer */ - GLuint bytes = ctx->DrawBuffer->Width * ctx->DrawBuffer->Height; - MEMSET( buffer, aclear, bytes ); + GLuint pixels = ctx->DrawBuffer->Width * ctx->DrawBuffer->Height; +#if CHAN_BITS == 8 + MEMSET(buffer, aclear, pixels); +#elif CHAN_BITS == 16 + MEMSET16(buffer, aclear, pixels); +#else +#error unexpected CHAN_BITS value +#endif } } } |