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- /*
- * $Id: $
- */
-
- /*
- * Mesa 3-D graphics library
- * Version: 3.1
- * Copyright (C) 1995 Brian Paul (brianp@ssec.wisc.edu)
- *
- * 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.
- */
-
- /**********************************************************************/
- /***** write spans of RGBA pixels *****/
- /**********************************************************************/
-
- void natDWriteRGBASpan(const GLcontext * ctx, GLuint n, GLint x, GLint y,
- CONST GLubyte rgba[][4], const GLubyte mask[])
- {
- amigaMesaContext amesa;
- GLubyte *il;
- struct RastPort *rp;
-
- amesa = (amigaMesaContext) ctx->DriverCtx;
- rp = amesa->rp;
- il = amesa->imageline; /* if imageline allocated then use fastversion */
-
- y = FIXy(y);
- x = FIXx(x);
- DEBUGOUT(1, "natDWriteRGBASpan(%d, %d, %d): ", n, x, y);
-
- if (!mask) {
- GLshort s, xx;
-
- DEBUGOUT(1, "nomask\n");
- for (s = n - 1, xx = x; s >= 0; s--, xx++, RGBAi++) /* draw pixel (x[i],y[i]) */
- *il++ = PLD_RGBA(amesa, *RGBAb0, *RGBAb1, *RGBAb2, xx, y); /* clear rgb? */
- DEBUGOUT(8, " MyWritePixelLine8(%d, %d, %d)\n", n, x, y);
- MyWritePixelLine8(rp, x, y, n, il = amesa->imageline, amesa->temprp);
- }
- else {
- GLshort i, ant = 0, xx;
-
- DEBUGOUT(1, "mask\n");
- for (i = 0, xx = x; i < n; i++, xx++) { /* draw pixel (x[i],y[i]) */
- if (*mask++) {
- ant++;
- *il++ = PLD_RGBA(amesa, *iRGBAb0, *iRGBAb1, *iRGBAb2, xx, y); /* clear rgb? */
- }
- else {
- if (ant) {
- DEBUGOUT(9, " MyWritePixelLine8(%d, %d, %d)\n", ant, x, y);
- MyWritePixelLine8(rp, x, y, ant, il = amesa->imageline, amesa->temprp);
- x += ant;
- ant = 0;
- }
- else
- x++;
- }
- }
-
- if (ant) {
- DEBUGOUT(9, " MyWritePixelLine8(%d, %d, %d)\n", ant, x, y);
- MyWritePixelLine8(rp, x, y, ant, amesa->imageline, amesa->temprp);
- }
- }
- }
-
- void natDWriteRGBSpan(const GLcontext * ctx, GLuint n, GLint x, GLint y,
- CONST GLubyte rgb[][3], const GLubyte mask[])
- {
- amigaMesaContext amesa;
- GLubyte *il;
- struct RastPort *rp;
-
- amesa = (amigaMesaContext) ctx->DriverCtx;
- rp = amesa->rp;
- il = amesa->imageline; /* if imageline allocated then use fastversion */
-
- y = FIXy(y);
- x = FIXx(x);
- DEBUGOUT(1, "natDWriteRGBSpan(%d, %d, %d): ", n, x, y);
-
- if (!mask) {
- GLshort s, xx;
-
- DEBUGOUT(1, "nomask\n");
- for (s = n - 1, xx = x; s >= 0; s--, xx++, RGBb += 3)
- *il++ = PLD_RGBA(amesa, *RGBb0, *RGBb1, *RGBb2, xx, y); /* clear rgb? */
- DEBUGOUT(8, " MyWritePixelLine8(%d, %d, %d)\n", n, x, y);
- MyWritePixelLine8(rp, x, y, n, il = amesa->imageline, amesa->temprp);
- }
- else {
- GLshort i, ant = 0, xx;
-
- DEBUGOUT(1, "mask\n");
- for (i = 0, xx = x; i < n; i++, xx++) { /* draw pixel (x[i],y[i]) */
- if (*mask++) {
- ant++;
- *il++ = PLD_RGBA(amesa, *iRGBb0, *iRGBb1, *iRGBb2, xx, y); /* clear rgb? */
- }
- else {
- if (ant) {
- DEBUGOUT(9, " MyWritePixelLine8(%d, %d, %d)\n", ant, x, y);
- MyWritePixelLine8(rp, x, y, ant, il = amesa->imageline, amesa->temprp);
- x += ant;
- ant = 0;
- }
- else
- x++;
- }
- }
-
- if (ant) {
- DEBUGOUT(9, " MyWritePixelLine8(%d, %d, %d)\n", ant, x, y);
- MyWritePixelLine8(rp, x, y, ant, amesa->imageline, amesa->temprp);
- }
- }
- }
-
- void natDWriteMonoCISpan(const GLcontext * ctx, GLuint n, GLint x, GLint y, const GLubyte mask[])
- {
- amigaMesaContext amesa;
- struct RastPort *rp;
- GLshort s;
- GLubyte r, g, b;
-
- amesa = (amigaMesaContext) ctx->DriverCtx;
- rp = amesa->rp;
-
- y = FIXy(y);
- x = FIXx(x);
- DEBUGOUT(1, "natWriteMonoCISpan(%d, %d, %d): \n", n, x, y);
-
- s = 0;
- r = amesa->pixel >> 24;
- g = amesa->pixel >> 16;
- b = amesa->pixel >> 8;
-
- while (s < n) {
- while (!*mask++ && s < n) {
- s++;
- x++;
- } mask--;
-
- if (s < n) {
- while (*mask++ && s < n) {
- SetAPen(rp, PLD_RGBA(amesa, r, g, b, x, y));
- WritePixel(rp, x, y);
- s++;
- x++;
- } mask--;
- SetAPen(rp, PLD_RGBA(amesa, r, g, b, x, y));
- WritePixel(rp, x, y);
- }
- }
- }
-
- /**********************************************************************/
- /***** write spans of RGBA pixels doublebuffered *****/
- /**********************************************************************/
-
- void natDWriteRGBASpanDB(const GLcontext * ctx, GLuint n, GLint x, GLint y,
- CONST GLubyte rgba[][4], const GLubyte mask[])
- {
- amigaMesaContext amesa;
- GLubyte *db;
-
- amesa = (amigaMesaContext) ctx->DriverCtx;
- db = dbPen(dbPenGet(amesa), x, y);
-
- DEBUGOUT(1, "natDWriteRGBASpanDB(%d, %d, %d)\n", n, FIXx(x), FIXy(y));
-
- /* Slower */
- if (!mask) {
- /* draw pixel (x[i],y[i]) */
- for (--(GLshort)n; (GLshort)n >= 0; (GLshort)n--, x++, RGBAi++)
- *db++ = PLD_RGBA(amesa, *RGBAb0, *RGBAb1, *RGBAb2, x, y); /* clear rgb? */
- }
- else
- /* draw pixel (x[i],y[i]) using index[i] */
- for (--(GLshort)n; (GLshort)n >= 0; (GLshort)n--, x++, RGBAi++, db++)
- if (*mask++)
- *db = PLD_RGBA(amesa, *RGBAb0, *RGBAb1, *RGBAb2, x, y); /* clear rgb? */
- }
-
- void natDWriteRGBSpanDB(const GLcontext * ctx, GLuint n, GLint x, GLint y,
- CONST GLubyte rgb[][3], const GLubyte mask[])
- {
- amigaMesaContext amesa;
- GLubyte *db;
-
- amesa = (amigaMesaContext) ctx->DriverCtx;
- db = dbPen(dbPenGet(amesa), x, y);
-
- DEBUGOUT(1, "natDWriteRGBSpanDB(%d, %d, %d)\n", n, FIXx(x), FIXy(y));
-
- /* Slower */
- if (!mask) {
- /* draw pixel (x[i],y[i]) */
- for (--(GLshort)n; (GLshort)n >= 0; (GLshort)n--, x++, RGBb += 3)
- *db++ = PLD_RGBA(amesa, *RGBb0, *RGBb1, *RGBb2, x, y); /* clear rgb? */
- }
- else
- /* draw pixel (x[i],y[i]) using index[i] */
- for (--(GLshort)n; (GLshort)n >= 0; (GLshort)n--, x++, RGBb += 3, db++)
- if (*mask++)
- *db = PLD_RGBA(amesa, *RGBb0, *RGBb1, *RGBb2, x, y); /* clear rgb? */
- }
-
- void natDWriteMonoCISpanDB(const GLcontext * ctx, GLuint n, GLint x, GLint y,
- const GLubyte mask[])
- {
- amigaMesaContext amesa;
- GLubyte *db;
- GLubyte r, g, b;
-
- amesa = (amigaMesaContext) ctx->DriverCtx;
- db = dbPen(dbPenGet(amesa), x, y);
-
- DEBUGOUT(1, "natWriteMonoCISpanDB(%d, %d, %d)\n", n, FIXx(x), FIXy(y));
-
- r = amesa->pixel >> 24;
- g = amesa->pixel >> 16;
- b = amesa->pixel >> 8;
-
- if (!mask) {
- /* draw pixel (x[i],y[i]) using index[i] */
- for (--(GLshort)n; (GLshort)n >= 0; (GLshort)n--, x++) /* Slower */
- *db++ = PLD_RGBA(amesa, r, g, b, x, y);
- }
- else
- /* draw pixel (x[i],y[i]) using index[i] */
- for (--(GLshort)n; (GLshort)n >= 0; (GLshort)n--, x++, db++)
- if (*mask++)
- *db = PLD_RGBA(amesa, r, g, b, x, y);
- }
-