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/****************************************************************************
*
* Mesa bindings for SciTech MGL
*
* Copyright (C) 1996 SciTech Software.
* All rights reserved.
*
* Filename: $Workfile: mmesa8.c $
* Version: $Revision: 1.1 $
*
* Language: ANSI C
* Environment: Any
*
* Description: Optimized 8bpp rendering functions.
*
* 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.
*
* $Date: 06 Apr 1997 14:40:00 $ $Author: KendallB $
*
****************************************************************************/
#include "mmesap.h"
/*------------------------- Implementation --------------------------------*/
#pragma warn -par
#include "mmesai.c"
/**********************************************************************/
/***** Write spans of pixels *****/
/**********************************************************************/
void _mmesa_write_span_ci(GLcontext *ctx,GLuint n, GLint x, GLint y,
GLuint index[],GLubyte mask[])
{
uchar *d = PACKED8_pixelAddr(x,FLIP(y));
while (n >= 8) {
if (mask[0]) d[0] = (uchar)index[0];
if (mask[1]) d[1] = (uchar)index[1];
if (mask[2]) d[2] = (uchar)index[2];
if (mask[3]) d[3] = (uchar)index[3];
if (mask[4]) d[4] = (uchar)index[4];
if (mask[5]) d[5] = (uchar)index[5];
if (mask[6]) d[6] = (uchar)index[6];
if (mask[7]) d[7] = (uchar)index[7];
d += 8; index += 8; mask += 8; n -= 8;
}
while (n--) {
if (mask[0]) d[0] = (uchar)index[0];
d++; index++; mask++;
}
}
void _mmesa_write_span_mono_ci(GLcontext *ctx,GLuint n,GLint x,GLint y,
GLubyte mask[])
{
uchar *d = PACKED8_pixelAddr(x,FLIP(y));
while (n >= 8) {
if (mask[0]) d[0] = (uchar)RC.color;
if (mask[1]) d[1] = (uchar)RC.color;
if (mask[2]) d[2] = (uchar)RC.color;
if (mask[3]) d[3] = (uchar)RC.color;
if (mask[4]) d[4] = (uchar)RC.color;
if (mask[5]) d[5] = (uchar)RC.color;
if (mask[6]) d[6] = (uchar)RC.color;
if (mask[7]) d[7] = (uchar)RC.color;
d += 8; mask += 8; n -= 8;
}
while (n--) {
if (mask[0]) d[0] = (uchar)RC.color;
d++; mask++;
}
}
IMPLEMENT_WRITE_SPAN(8,8,uchar);
IMPLEMENT_WRITE_SPAN_DITHER(8,DITHER8,uchar);
IMPLEMENT_WRITE_SPAN_MONO(8,uchar);
IMPLEMENT_WRITE_SPAN_MONO_DITHER(8,DITHER8,uchar);
/**********************************************************************/
/***** Write arrays of pixels *****/
/**********************************************************************/
void _mmesa_write_pixels_ci(GLcontext *ctx,GLuint n, GLint x[],
GLint y[],GLuint index[], GLubyte mask[])
{
while (n >= 4) {
if (mask[0]) *((uchar*)PACKED8_pixelAddr(x[0],FLIP(y[0]))) = (uchar)index[0];
if (mask[1]) *((uchar*)PACKED8_pixelAddr(x[1],FLIP(y[1]))) = (uchar)index[1];
if (mask[2]) *((uchar*)PACKED8_pixelAddr(x[2],FLIP(y[2]))) = (uchar)index[2];
if (mask[3]) *((uchar*)PACKED8_pixelAddr(x[3],FLIP(y[3]))) = (uchar)index[3];
index += 4; mask += 4; x += 4; y += 4; n -= 4;
}
while (n--) {
if (mask[0]) *((uchar*)PACKED8_pixelAddr(x[0],FLIP(y[0]))) = (uchar)index[0];
index++; mask++; x++; y++;
}
}
void _mmesa_write_pixels_mono_ci(GLcontext *ctx,GLuint n,GLint x[],
GLint y[],GLubyte mask[])
{
while (n >= 4) {
if (mask[0]) *((uchar*)PACKED8_pixelAddr(x[0],FLIP(y[0]))) = (uchar)RC.color;
if (mask[1]) *((uchar*)PACKED8_pixelAddr(x[1],FLIP(y[1]))) = (uchar)RC.color;
if (mask[2]) *((uchar*)PACKED8_pixelAddr(x[2],FLIP(y[2]))) = (uchar)RC.color;
if (mask[3]) *((uchar*)PACKED8_pixelAddr(x[3],FLIP(y[3]))) = (uchar)RC.color;
mask += 4; x += 4; y += 4; n -= 4;
}
while (n--) {
if (mask[0]) *((uchar*)PACKED8_pixelAddr(x[0],FLIP(y[0]))) = (uchar)RC.color;
mask++; x++; y++;
}
}
IMPLEMENT_WRITE_PIXELS(8,8,uchar);
IMPLEMENT_WRITE_PIXELS_DITHER(8,DITHER8,uchar);
IMPLEMENT_WRITE_PIXELS_MONO(8,uchar);
IMPLEMENT_WRITE_PIXELS_MONO_DITHER(8,DITHER8,uchar);
/**********************************************************************/
/***** Read spans of pixels *****/
/**********************************************************************/
void _mmesa_read_span_ci(GLcontext *ctx,GLuint n, GLint x, GLint y,
GLuint index[])
{
uchar *d = PACKED8_pixelAddr(x,FLIP(y));
while (n >= 8) {
index[0] = d[0];
index[1] = d[1];
index[2] = d[2];
index[3] = d[3];
index[4] = d[4];
index[5] = d[5];
index[6] = d[6];
index[7] = d[7];
d += 8; index += 8; n -= 8;
}
while (n--) {
index[0] = d[0];
d++; index++;
}
}
void _mmesa_read_span_8(GLcontext *ctx,GLuint n, GLint x, GLint y,
GLubyte red[], GLubyte green[],GLubyte blue[], GLubyte alpha[])
{
color_t color,*colorTab = RC.dc->colorTab;
uchar *d = PACKED8_pixelAddr(x,FLIP(y));
while (n--) {
color = colorTab[d[0]];
UNPACK_COLOR_RGB(color,red[0],green[0],blue[0]);
red++; green++; blue++; d++;
}
}
/**********************************************************************/
/***** Read arrays of pixels *****/
/**********************************************************************/
void _mmesa_read_pixels_ci(GLcontext *ctx,GLuint n, GLint x[],
GLint y[],GLuint index[], GLubyte mask[])
{
while (n--) {
if (mask[0]) {
uchar *d = PACKED8_pixelAddr(x[0],FLIP(y[0]));
index[0] = d[0];
}
index++; mask++; x++; y++;
}
}
void _mmesa_read_pixels_8(GLcontext *ctx,GLuint n, GLint x[],
GLint y[],GLubyte red[], GLubyte green[],GLubyte blue[],
GLubyte alpha[],GLubyte mask[])
{
color_t *colorTab = RC.dc->colorTab;
while (n--) {
if (mask[0]) {
uchar *d = PACKED8_pixelAddr(x[0],FLIP(y[0]));
color_t color = colorTab[d[0]];
UNPACK_COLOR(color,red[0],green[0],blue[0]);
}
red++; green++; blue++; mask++; x++; y++;
}
}
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