/* $Id: svgamesa8.c,v 1.9.10.1 2006/11/02 12:02:17 alanh Exp $ */ /* * Mesa 3-D graphics library * Version: 3.3 * Copyright (C) 1995-2000 Brian Paul * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the Free * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* * SVGA driver for Mesa. * Original author: Brian Paul * Additional authors: Slawomir Szczyrba (Mesa 3.2) */ #ifdef HAVE_CONFIG_H #include "conf.h" #endif #ifdef SVGA #include "svgapix.h" #include "svgamesa8.h" #include "swrast/swrast.h" static void __svga_drawpixel8(int x, int y, unsigned long c) { unsigned long offset; y = SVGAInfo->height-y-1; offset = y * SVGAInfo->linewidth + x; SVGABuffer.DrawBuffer[offset]=c; } static unsigned long __svga_getpixel8(int x, int y) { unsigned long offset; y = SVGAInfo->height-y-1; offset = y * SVGAInfo->linewidth + x; return SVGABuffer.ReadBuffer[offset]; } void __clear_index8( GLcontext *ctx, GLuint index ) { SVGAMesa->clear_index = index; } void __clear8( GLcontext *ctx, GLbitfield mask ) { int i,j; int x = ctx->DrawBuffer->_Xmin; int y = ctx->DrawBuffer->_Ymin; int width = ctx->DrawBuffer->_Xmax - x; int height = ctx->DrawBuffer->_Ymax - y; GLboolean all = (width == ctx->DrawBuffer->Width && height == ctx->DrawBuffer->height) if (mask & DD_FRONT_LEFT_BIT) { if (all) { memset(SVGABuffer.FrontBuffer, SVGAMesa->clear_index, SVGABuffer.BufferSize); } else { GLubyte *tmp = SVGABuffer.DrawBuffer; SVGABuffer.DrawBuffer = SVGABuffer.FrontBuffer; for (i=x;iclear_index); SVGABuffer.DrawBuffer = tmp; } mask &= ~DD_FRONT_LEFT_BIT; } if (mask & DD_BACK_LEFT_BIT) { if (all) { memset(SVGABuffer.BackBuffer, SVGAMesa->clear_index, SVGABuffer.BufferSize); } else { GLubyte *tmp = SVGABuffer.DrawBuffer; SVGABuffer.DrawBuffer = SVGABuffer.BackBuffer; for (i=x;iclear_index); SVGABuffer.DrawBuffer = tmp; } mask &= ~DD_BACK_LEFT_BIT; } if (mask) _swrast_Clear( ctx, mask ); } void __write_ci32_span8( const GLcontext *ctx, struct gl_renderbuffer *rb, GLuint n, GLint x, GLint y, const GLuint index[], const GLubyte mask[] ) { int i; for (i=0;i