diff options
Diffstat (limited to 'nx-X11/extras/Mesa_6.4.2/src/mesa/drivers/svga/svgamesa8.c')
| -rw-r--r-- | nx-X11/extras/Mesa_6.4.2/src/mesa/drivers/svga/svgamesa8.c | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/nx-X11/extras/Mesa_6.4.2/src/mesa/drivers/svga/svgamesa8.c b/nx-X11/extras/Mesa_6.4.2/src/mesa/drivers/svga/svgamesa8.c new file mode 100644 index 000000000..fd880ef85 --- /dev/null +++ b/nx-X11/extras/Mesa_6.4.2/src/mesa/drivers/svga/svgamesa8.c @@ -0,0 +1,193 @@ +/* $Id: svgamesa8.c,v 1.9 2005/05/04 20:11:39 brianp 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 <steev@hot.pl> (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, GLboolean all, + GLint x, GLint y, GLint width, GLint height ) +{ + int i,j; + + 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;i<width;i++) + for (j=y;j<height;j++) + __svga_drawpixel8(i,j,SVGAMesa->clear_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;i<width;i++) + for (j=y;j<height;j++) + __svga_drawpixel8(i,j,SVGAMesa->clear_index); + SVGABuffer.DrawBuffer = tmp; + } + mask &= ~DD_BACK_LEFT_BIT; + } + + if (mask) + _swrast_Clear( ctx, mask, all, x, y, width, height ); +} + +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<n;i++,x++) { + if (mask[i]) { + __svga_drawpixel8( x, y, index[i]); + } + } +} + +void __write_ci8_span8( const GLcontext *ctx, struct gl_renderbuffer *rb, + GLuint n, GLint x, GLint y, + const GLubyte index[], const GLubyte mask[] ) +{ + int i; + + for (i=0;i<n;i++,x++) { + if (mask[i]) { + __svga_drawpixel8( x, y, index[i]); + } + } +} + +void __write_mono_ci_span8( const GLcontext *ctx, struct gl_renderbuffer *rb, + GLuint n, GLint x, GLint y, + GLuint colorIndex, const GLubyte mask[] ) +{ + int i; + for (i=0;i<n;i++,x++) { + if (mask[i]) { + __svga_drawpixel8( x, y, colorIndex); + } + } +} + +void __read_ci32_span8( const GLcontext *ctx, struct gl_renderbuffer *rb, + GLuint n, GLint x, GLint y, GLuint index[]) +{ + int i; + for (i=0; i<n; i++,x++) { + index[i] = __svga_getpixel8( x, y); + } +} + +void __write_ci32_pixels8( const GLcontext *ctx, struct gl_renderbuffer *rb, + GLuint n, const GLint x[], const GLint y[], + const GLuint index[], const GLubyte mask[] ) +{ + int i; + for (i=0; i<n; i++) { + if (mask[i]) { + __svga_drawpixel8( x[i], y[i], index[i]); + } + } +} + + +void __write_mono_ci_pixels8( const GLcontext *ctx, struct gl_renderbuffer *rb, + GLuint n, const GLint x[], const GLint y[], + GLuint colorIndex, const GLubyte mask[] ) +{ + int i; + for (i=0; i<n; i++) { + if (mask[i]) { + __svga_drawpixel8( x[i], y[i], colorIndex); + } + } +} + +void __read_ci32_pixels8( const GLcontext *ctx, struct gl_renderbuffer *rb, + GLuint n, const GLint x[], const GLint y[], + GLuint index[], const GLubyte mask[] ) +{ + int i; + for (i=0; i<n; i++,x++) { + index[i] = __svga_getpixel8( x[i], y[i]); + } +} + + +#else + + +/* silence compiler warning */ +extern void _mesa_svga8_dummy_function(void); +void _mesa_svga8_dummy_function(void) +{ +} + + +#endif |