/* | |
* Mesa 3-D graphics library | |
* Version: 3.0 | |
* Copyright (C) 1995-1998 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. | |
*/ | |
#define DESTINATION(BMP, X, Y, TYPE) \ | |
({ \ | |
BITMAP *_bmp = BMP; \ | |
\ | |
(TYPE*)(_bmp->line[_bmp->h - (Y) - 1]) + (X); \ | |
}) | |
#define IMPLEMENT_WRITE_RGBA_SPAN(DEPTH, TYPE) \ | |
static void write_rgba_span_##DEPTH (const GLcontext *ctx, \ | |
GLuint n, GLint x, GLint y, \ | |
const GLubyte rgba[][4], \ | |
const GLubyte mask[]) \ | |
{ \ | |
AMesaContext context = (AMesaContext)(ctx->DriverCtx); \ | |
TYPE *d = DESTINATION(context->Buffer->Active, x, y, TYPE); \ | |
\ | |
if (mask) \ | |
{ \ | |
while (n--) \ | |
{ \ | |
if (mask[0]) d[0] = makecol##DEPTH(rgba[0][RCOMP], rgba[0][GCOMP], rgba[0][BCOMP]); \ | |
d++; rgba++; mask++; \ | |
} \ | |
} \ | |
else \ | |
{ \ | |
while (n--) \ | |
{ \ | |
d[0] = makecol##DEPTH(rgba[0][RCOMP], rgba[0][GCOMP], rgba[0][BCOMP]); \ | |
d++; rgba++; \ | |
} \ | |
} \ | |
} | |
#define IMPLEMENT_WRITE_RGB_SPAN(DEPTH, TYPE) \ | |
static void write_rgb_span_##DEPTH (const GLcontext *ctx, \ | |
GLuint n, GLint x, GLint y, \ | |
const GLubyte rgb[][3], \ | |
const GLubyte mask[]) \ | |
{ \ | |
AMesaContext context = (AMesaContext)(ctx->DriverCtx); \ | |
TYPE *d = DESTINATION(context->Buffer->Active, x, y, TYPE); \ | |
\ | |
if (mask) \ | |
{ \ | |
while (n--) \ | |
{ \ | |
if (mask[0]) d[0] = makecol##DEPTH(rgb[0][RCOMP], rgb[0][GCOMP], rgb[0][BCOMP]); \ | |
d++; rgb++; mask++; \ | |
} \ | |
} \ | |
else \ | |
{ \ | |
while (n--) \ | |
{ \ | |
d[0] = makecol##DEPTH(rgb[0][RCOMP], rgb[0][GCOMP], rgb[0][BCOMP]); \ | |
d++; rgb++; \ | |
} \ | |
} \ | |
} | |
#define IMPLEMENT_WRITE_MONO_RGBA_SPAN(DEPTH, TYPE) \ | |
static void write_mono_rgba_span_##DEPTH (const GLcontext *ctx, \ | |
GLuint n, GLint x, GLint y, \ | |
const GLubyte mask[]) \ | |
{ \ | |
AMesaContext context = (AMesaContext)(ctx->DriverCtx); \ | |
TYPE color = context->CurrentColor; \ | |
TYPE *d = DESTINATION(context->Buffer->Active, x, y, TYPE); \ | |
\ | |
while (n--) \ | |
{ \ | |
if (mask[0]) d[0] = color; \ | |
d++; mask++; \ | |
} \ | |
} | |
#define IMPLEMENT_READ_RGBA_SPAN(DEPTH, TYPE) \ | |
static void read_rgba_span_##DEPTH (const GLcontext *ctx, \ | |
GLuint n, GLint x, GLint y, \ | |
GLubyte rgba[][4]) \ | |
{ \ | |
AMesaContext context = (AMesaContext)(ctx->DriverCtx); \ | |
BITMAP *bmp = context->Buffer->Active; \ | |
TYPE *d = DESTINATION(bmp, x, y, TYPE); \ | |
\ | |
while (n--) \ | |
{ \ | |
rgba[0][RCOMP] = getr##DEPTH(d[0]); \ | |
rgba[0][GCOMP] = getg##DEPTH(d[0]); \ | |
rgba[0][BCOMP] = getb##DEPTH(d[0]); \ | |
rgba[0][ACOMP] = 255; \ | |
\ | |
d++; rgba++; \ | |
} \ | |
} | |
#define IMPLEMENT_WRITE_RGBA_PIXELS(DEPTH, TYPE) \ | |
static void write_rgba_pixels_##DEPTH (const GLcontext *ctx, \ | |
GLuint n, \ | |
const GLint x[], \ | |
const GLint y[], \ | |
const GLubyte rgba[][4], \ | |
const GLubyte mask[]) \ | |
{ \ | |
AMesaContext context = (AMesaContext)(ctx->DriverCtx); \ | |
BITMAP *bmp = context->Buffer->Active; \ | |
\ | |
while (n--) \ | |
{ \ | |
if (mask[0]) *DESTINATION(bmp, x[0], y[0], TYPE) = makecol##DEPTH(rgba[0][RCOMP], rgba[0][GCOMP], rgba[0][BCOMP]); \ | |
rgba++; x++; y++; mask++; \ | |
} \ | |
} | |
#define IMPLEMENT_WRITE_MONO_RGBA_PIXELS(DEPTH, TYPE) \ | |
static void write_mono_rgba_pixels_##DEPTH (const GLcontext *ctx, \ | |
GLuint n, \ | |
const GLint x[], \ | |
const GLint y[], \ | |
const GLubyte mask[]) \ | |
{ \ | |
AMesaContext context = (AMesaContext)(ctx->DriverCtx); \ | |
TYPE color = context->CurrentColor; \ | |
BITMAP *bmp = context->Buffer->Active; \ | |
\ | |
while (n--) \ | |
{ \ | |
if (mask[0]) *DESTINATION(bmp, x[0], y[0], TYPE) = color; \ | |
x++; y++; mask++; \ | |
} \ | |
} | |
#define IMPLEMENT_READ_RGBA_PIXELS(DEPTH, TYPE) \ | |
static void read_rgba_pixels_##DEPTH (const GLcontext *ctx, \ | |
GLuint n, \ | |
const GLint x[], \ | |
const GLint y[], \ | |
GLubyte rgba[][4], \ | |
const GLubyte mask[]) \ | |
{ \ | |
AMesaContext context = (AMesaContext)(ctx->DriverCtx); \ | |
BITMAP *bmp = context->Buffer->Active; \ | |
\ | |
while (n--) \ | |
{ \ | |
if (mask[0]) \ | |
{ \ | |
int color = *DESTINATION(bmp, x[0], y[0], TYPE); \ | |
\ | |
rgba[0][RCOMP] = getr##DEPTH(color); \ | |
rgba[0][GCOMP] = getg##DEPTH(color); \ | |
rgba[0][BCOMP] = getb##DEPTH(color); \ | |
rgba[0][ACOMP] = 255; \ | |
} \ | |
\ | |
x++; y++; rgba++; mask++; \ | |
} \ | |
} | |