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don't apply scissor box in read_fast_rgba_pixels()

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Brian Paul 2002-01-12 16:12:52 +00:00
parent 3e276d43a2
commit 21cb88911a
1 changed files with 15 additions and 15 deletions
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30
src/mesa/swrast/s_readpix.c
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@ -1,10 +1,10 @@
/* $Id: s_readpix.c,v 1.12 2001/05/16 20:27:12 brianp Exp $ */
/* $Id: s_readpix.c,v 1.13 2002/01/12 16:12:52 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"),
@ -246,24 +246,24 @@ read_fast_rgba_pixels( GLcontext *ctx,
rowLength = width;
/* horizontal clipping */
if (srcX < ctx->ReadBuffer->_Xmin) {
skipPixels += (ctx->ReadBuffer->_Xmin - srcX);
readWidth -= (ctx->ReadBuffer->_Xmin - srcX);
srcX = ctx->ReadBuffer->_Xmin;
if (srcX < 0) {
skipPixels -= srcX;
readWidth += srcX;
srcX = 0;
}
if (srcX + readWidth > ctx->ReadBuffer->_Xmax)
readWidth -= (srcX + readWidth - ctx->ReadBuffer->_Xmax);
if (srcX + readWidth > ctx->ReadBuffer->Width)
readWidth -= (srcX + readWidth - ctx->ReadBuffer->Width);
if (readWidth <= 0)
return GL_TRUE;
/* vertical clipping */
if (srcY < ctx->ReadBuffer->_Ymin) {
skipRows += (ctx->ReadBuffer->_Ymin - srcY);
readHeight -= (ctx->ReadBuffer->_Ymin - srcY);
srcY = ctx->ReadBuffer->_Ymin;
if (srcY < 0) {
skipRows -= srcY;
readHeight += srcY;
srcY = 0;
}
if (srcY + readHeight > ctx->ReadBuffer->_Ymax)
readHeight -= (srcY + readHeight - ctx->ReadBuffer->_Ymax);
if (srcY + readHeight > ctx->ReadBuffer->Height)
readHeight -= (srcY + readHeight - ctx->ReadBuffer->Height);
if (readHeight <= 0)
return GL_TRUE;