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Diffstat (limited to 'src/mesa/drivers/allegro/direct.h')
| -rw-r--r-- | src/mesa/drivers/allegro/direct.h | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/src/mesa/drivers/allegro/direct.h b/src/mesa/drivers/allegro/direct.h new file mode 100644 index 00000000000..bd8b5eb49dd --- /dev/null +++ b/src/mesa/drivers/allegro/direct.h @@ -0,0 +1,189 @@ +/* + * 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++; \ + } \ + } + |