diff options
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..3998fc19d7b --- /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++; \
+ } \
+ }
+
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