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/****************************************************************************
*
* Mesa bindings for SciTech MGL
*
* Copyright (C) 1996 SciTech Software.
* All rights reserved.
*
* Filename: $Workfile: mmesai.c $
* Version: $Revision: 1.1 $
*
* Language: ANSI C
* Environment: Any
*
* Description: Include file defining macros to implement many of the
* optimized rendering functions for the MGL Mesa driver.
*
* 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 $
*
****************************************************************************/
/**********************************************************************/
/***** Write spans of pixels *****/
/**********************************************************************/
#define IMPLEMENT_WRITE_SPAN(DEPTH,FMT,TYPE) \
void _mmesa_write_span_##DEPTH##_##FMT (GLcontext *ctx,GLuint n, GLint x, \
GLint y,GLubyte red[], GLubyte green[],GLubyte blue[],GLubyte alpha[], \
GLubyte mask[]) \
{ \
TYPE *d = PACKED##DEPTH##_pixelAddr(x,FLIP(y)); \
if (mask) { \
while (n >= 8) { \
if (mask[0]) d[0] = PACK_COLOR_##FMT(red[0],green[0],blue[0]); \
if (mask[1]) d[1] = PACK_COLOR_##FMT(red[1],green[1],blue[1]); \
if (mask[2]) d[2] = PACK_COLOR_##FMT(red[2],green[2],blue[2]); \
if (mask[3]) d[3] = PACK_COLOR_##FMT(red[3],green[3],blue[3]); \
if (mask[4]) d[4] = PACK_COLOR_##FMT(red[4],green[4],blue[4]); \
if (mask[5]) d[5] = PACK_COLOR_##FMT(red[5],green[5],blue[5]); \
if (mask[6]) d[6] = PACK_COLOR_##FMT(red[6],green[6],blue[6]); \
if (mask[7]) d[7] = PACK_COLOR_##FMT(red[7],green[7],blue[7]); \
d += 8; red += 8; green += 8; blue += 8; mask += 8; n -= 8; \
} \
while (n--) { \
if (mask[0]) d[0] = PACK_COLOR_##FMT(red[0],green[0],blue[0]); \
d++; red++; green++; blue++; mask++; \
} \
} \
else { \
while (n >= 8) { \
d[0] = PACK_COLOR_##FMT(red[0],green[0],blue[0]); \
d[1] = PACK_COLOR_##FMT(red[1],green[1],blue[1]); \
d[2] = PACK_COLOR_##FMT(red[2],green[2],blue[2]); \
d[3] = PACK_COLOR_##FMT(red[3],green[3],blue[3]); \
d[4] = PACK_COLOR_##FMT(red[4],green[4],blue[4]); \
d[5] = PACK_COLOR_##FMT(red[5],green[5],blue[5]); \
d[6] = PACK_COLOR_##FMT(red[6],green[6],blue[6]); \
d[7] = PACK_COLOR_##FMT(red[7],green[7],blue[7]); \
d += 8; red += 8; green += 8; blue += 8; n -= 8; \
} \
while (n--) { \
d[0] = PACK_COLOR_##FMT(red[0],green[0],blue[0]); \
d++; red++; green++; blue++; \
} \
} \
}
#define IMPLEMENT_WRITE_SPAN_DITHER(DEPTH,FMT,TYPE) \
void _mmesa_write_span_##DEPTH##_##FMT(GLcontext *ctx,GLuint n, GLint x, \
GLint y,GLubyte red[], GLubyte green[],GLubyte blue[],GLubyte alpha[], \
GLubyte mask[]) \
{ \
TYPE *d; \
y = FLIP(y); \
d = PACKED##DEPTH##_pixelAddr(x,y); \
if (mask) { \
while (n >= 4) { \
if (mask[0]) PACK_COLOR_##FMT(d[0],x,y,red[0],green[0],blue[0]); \
if (mask[1]) PACK_COLOR_##FMT(d[1],x+1,y,red[1],green[1],blue[1]); \
if (mask[2]) PACK_COLOR_##FMT(d[2],x+2,y,red[2],green[2],blue[2]); \
if (mask[3]) PACK_COLOR_##FMT(d[3],x+3,y,red[3],green[3],blue[3]); \
d += 4; red += 4; green += 4; blue += 4; mask += 4; x += 4; n -= 4; \
} \
while (n--) { \
if (mask[0]) PACK_COLOR_##FMT(d[0],x,y,red[0],green[0],blue[0]); \
d++; red++; green++; blue++; mask++; x++; \
} \
} \
else { \
while (n >= 4) { \
PACK_COLOR_##FMT(d[0],x,y,red[0],green[0],blue[0]); \
PACK_COLOR_##FMT(d[1],x+1,y,red[1],green[1],blue[1]); \
PACK_COLOR_##FMT(d[2],x+2,y,red[2],green[2],blue[2]); \
PACK_COLOR_##FMT(d[3],x+3,y,red[3],green[3],blue[3]); \
d += 4; red += 4; green += 4; blue += 4; x += 4; n -= 4; \
} \
while (n--) { \
PACK_COLOR_##FMT(d[0],x,y,red[0],green[0],blue[0]); \
d++; red++; green++; blue++; x++; \
} \
} \
}
#define IMPLEMENT_WRITE_SPAN_MONO(DEPTH,TYPE) \
void _mmesa_write_span_mono_##DEPTH (GLcontext *ctx,GLuint n,GLint x, \
GLint y,GLubyte mask[]) \
{ \
TYPE *d = PACKED##DEPTH##_pixelAddr(x,FLIP(y)); \
while (n >= 8) { \
if (mask[0]) d[0] = (TYPE)RC.color; \
if (mask[1]) d[1] = (TYPE)RC.color; \
if (mask[2]) d[2] = (TYPE)RC.color; \
if (mask[3]) d[3] = (TYPE)RC.color; \
if (mask[4]) d[4] = (TYPE)RC.color; \
if (mask[5]) d[5] = (TYPE)RC.color; \
if (mask[6]) d[6] = (TYPE)RC.color; \
if (mask[7]) d[7] = (TYPE)RC.color; \
d += 8; mask += 8; n -= 8; \
} \
while (n--) { \
if (mask[0]) d[0] = (TYPE)RC.color; \
d++; mask++; \
} \
}
#define IMPLEMENT_WRITE_SPAN_MONO_DITHER(DEPTH,FMT,TYPE) \
void _mmesa_write_span_mono_##DEPTH##_##FMT (GLcontext *ctx,GLuint n,GLint x, \
GLint y,GLubyte mask[]) \
{ \
HALFTONE_VARS_##DEPTH; \
TYPE *d; \
y = FLIP(y); \
d = PACKED##DEPTH##_pixelAddr(x,y); \
SETUP_##FMT(y,RC.red,RC.green,RC.blue); \
while (n >= 4) { \
if (mask[0]) PACK_COLOR2_##FMT(d[0],x); \
if (mask[1]) PACK_COLOR2_##FMT(d[1],x+1); \
if (mask[2]) PACK_COLOR2_##FMT(d[2],x+2); \
if (mask[3]) PACK_COLOR2_##FMT(d[3],x+3); \
d += 4; mask += 4; x += 4; n -= 4; \
} \
while (n--) { \
if (mask[0]) PACK_COLOR2_##FMT(d[0],x); \
d++; mask++; x++; \
} \
}
/**********************************************************************/
/***** Write arrays of pixels *****/
/**********************************************************************/
#define IMPLEMENT_WRITE_PIXELS(DEPTH,FMT,TYPE) \
void _mmesa_write_pixels_##DEPTH##_##FMT (GLcontext *ctx,GLuint n, GLint x[], \
GLint y[],GLubyte r[], GLubyte g[],GLubyte b[], \
GLubyte a[],GLubyte mask[]) \
{ \
while (n >= 4) { \
if (mask[0]) *((TYPE*)PACKED##DEPTH##_pixelAddr(x[0],FLIP(y[0]))) = PACK_COLOR_##FMT(r[0],g[0],b[0]); \
if (mask[1]) *((TYPE*)PACKED##DEPTH##_pixelAddr(x[1],FLIP(y[1]))) = PACK_COLOR_##FMT(r[1],g[1],b[1]); \
if (mask[2]) *((TYPE*)PACKED##DEPTH##_pixelAddr(x[2],FLIP(y[2]))) = PACK_COLOR_##FMT(r[2],g[2],b[2]); \
if (mask[3]) *((TYPE*)PACKED##DEPTH##_pixelAddr(x[3],FLIP(y[3]))) = PACK_COLOR_##FMT(r[3],g[3],b[3]); \
r += 4; g += 4; b += 4; mask += 4; x+= 4; y += 4; n -= 4; \
} \
while (n--) { \
if (mask[0]) *((TYPE*)PACKED##DEPTH##_pixelAddr(x[0],FLIP(y[0]))) = PACK_COLOR_##FMT(r[0],g[0],b[0]); \
r++; g++; b++; mask++; x++; y++; \
} \
}
#define IMPLEMENT_WRITE_PIXELS_DITHER(DEPTH,FMT,TYPE) \
void _mmesa_write_pixels_##DEPTH##_##FMT(GLcontext *ctx,GLuint n, GLint x[], \
GLint y[],GLubyte r[], GLubyte g[],GLubyte b[], \
GLubyte a[],GLubyte mask[]) \
{ \
while (n--) { \
if (mask[0]) { \
TYPE *d = PACKED##DEPTH##_pixelAddr(x[0],FLIP(y[0])); \
PACK_COLOR_##FMT(d[0],x[0],FLIP(y[0]),r[0],g[0],b[0]); \
} \
r++; g++; b++; mask++; x++; y++; \
} \
}
#define IMPLEMENT_WRITE_PIXELS_MONO(DEPTH,TYPE) \
void _mmesa_write_pixels_mono_##DEPTH (GLcontext *ctx,GLuint n,GLint x[], \
GLint y[],GLubyte mask[]) \
{ \
while (n >= 4) { \
if (mask[0]) *((TYPE*)PACKED##DEPTH##_pixelAddr(x[0],FLIP(y[0]))) = (TYPE)RC.color; \
if (mask[1]) *((TYPE*)PACKED##DEPTH##_pixelAddr(x[1],FLIP(y[1]))) = (TYPE)RC.color; \
if (mask[2]) *((TYPE*)PACKED##DEPTH##_pixelAddr(x[2],FLIP(y[2]))) = (TYPE)RC.color; \
if (mask[3]) *((TYPE*)PACKED##DEPTH##_pixelAddr(x[3],FLIP(y[3]))) = (TYPE)RC.color; \
mask += 4; x+= 4; y += 4; n -= 4; \
} \
while (n--) { \
if (mask[0]) *((TYPE*)PACKED##DEPTH##_pixelAddr(x[0],FLIP(y[0]))) = (TYPE)RC.color; \
mask++; x++; y++; \
} \
}
#define IMPLEMENT_WRITE_PIXELS_MONO_DITHER(DEPTH,FMT,TYPE) \
void _mmesa_write_pixels_mono_##DEPTH##_##FMT(GLcontext *ctx,GLuint n,GLint x[], \
GLint y[],GLubyte mask[]) \
{ \
while (n--) { \
if (mask[0]) { \
TYPE *d = PACKED##DEPTH##_pixelAddr(x[0],FLIP(y[0])); \
PACK_COLOR_##FMT(d[0],x[0],FLIP(y[0]),RC.red,RC.green,RC.blue); \
} \
mask++; x++; y++; \
} \
}
/**********************************************************************/
/***** Read spans of pixels *****/
/**********************************************************************/
#define IMPLEMENT_READ_SPAN(DEPTH,FMT,TYPE) \
void _mmesa_read_span_##DEPTH##_##FMT(GLcontext *ctx,GLuint n, GLint x, GLint y, \
GLubyte red[], GLubyte green[],GLubyte blue[], GLubyte alpha[]) \
{ \
TYPE *d = PACKED##DEPTH##_pixelAddr(x,FLIP(y)); \
while (n >= 8) { \
UNPACK_COLOR_##FMT(d[0],red[0],green[0],blue[0]); \
UNPACK_COLOR_##FMT(d[1],red[1],green[1],blue[1]); \
UNPACK_COLOR_##FMT(d[2],red[2],green[2],blue[2]); \
UNPACK_COLOR_##FMT(d[3],red[3],green[3],blue[3]); \
UNPACK_COLOR_##FMT(d[4],red[4],green[4],blue[4]); \
UNPACK_COLOR_##FMT(d[5],red[5],green[5],blue[5]); \
UNPACK_COLOR_##FMT(d[6],red[6],green[6],blue[6]); \
UNPACK_COLOR_##FMT(d[7],red[7],green[7],blue[7]); \
d += 8; red += 8; green += 8; blue += 8; n -= 8; \
} \
while (n--) { \
UNPACK_COLOR_##FMT(d[0],red[0],green[0],blue[0]); \
d++; red++; green++; blue++; \
} \
}
/**********************************************************************/
/***** Read arrays of pixels *****/
/**********************************************************************/
#define IMPLEMENT_READ_PIXELS(DEPTH,FMT,TYPE) \
void _mmesa_read_pixels_##DEPTH##_##FMT (GLcontext *ctx,GLuint n, GLint x[], \
GLint y[],GLubyte red[], GLubyte green[],GLubyte blue[], \
GLubyte alpha[],GLubyte mask[]) \
{ \
while (n >= 4) { \
if (mask[0]) { \
TYPE *d = PACKED##DEPTH##_pixelAddr(x[0],FLIP(y[0])); \
UNPACK_COLOR_##FMT(d[0],red[0],green[0],blue[0]); \
} \
if (mask[1]) { \
TYPE *d = PACKED##DEPTH##_pixelAddr(x[1],FLIP(y[1])); \
UNPACK_COLOR_##FMT(d[1],red[1],green[1],blue[1]); \
} \
if (mask[2]) { \
TYPE *d = PACKED##DEPTH##_pixelAddr(x[2],FLIP(y[2])); \
UNPACK_COLOR_##FMT(d[2],red[2],green[2],blue[2]); \
} \
if (mask[3]) { \
TYPE *d = PACKED##DEPTH##_pixelAddr(x[3],FLIP(y[3])); \
UNPACK_COLOR_##FMT(d[3],red[3],green[3],blue[3]); \
} \
red += 4; green += 4; blue += 4; mask += 4; x += 4; y += 4; n -= 4; \
} \
while (n--) { \
if (mask[0]) { \
TYPE *d = PACKED##DEPTH##_pixelAddr(x[0],FLIP(y[0])); \
UNPACK_COLOR_##FMT(d[0],red[0],green[0],blue[0]); \
} \
red++; green++; blue++; mask++; x++; y++; \
} \
}
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