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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.
- */
-
- /**********************************************************************/
- /***** read arrays of RGBA pixels *****/
- /**********************************************************************/
-
- void cybGReadCI32Pixel(const GLcontext * ctx, GLuint n, const GLint x[], const GLint y[],
- GLuint index[], const GLubyte mask[])
- {
- amigaMesaContext amesa;
- struct RastPort *rp;
- GLuint *PtoI;
- GLuint col;
-
- amesa = (amigaMesaContext) ctx->DriverCtx;
- rp = amesa->rp;
- PtoI = amesa->PtoI;
-
- DEBUGOUT(1, "cybReadCI32Pixel(%d)\n", n);
-
- for (--(GLshort)n; (GLshort)n >= 0; (GLshort)n--, INDEXi++, Xx++, Yy++) {
- if (*mask++) {
- /* index[i] = read_pixel x[i], y[i] */
- col = ReadRGBPixel(rp, FIXx(*Xx), FIXy(*Yy));
- DEBUGOUT(9, " ReadRGBPixel(%d, %d)\n", FIXx(*Xx), FIXy(*Yy));
-
- /* this means:
- * -make a quick match and get a pen (color-quantization!)
- * -convert the pen to index
- */
- *INDEXi = GetIndexLocal(PLG_RGBA(amesa, (GLubyte) (col >> 24),
- (GLubyte) (col >> 16),
- (GLubyte) (col >> 8))) & 0xFF;
- }
- }
- }
-
- /**********************************************************************/
- /***** read arrays of RGBA pixels doublebuffered *****/
- /**********************************************************************/
-
- void cybGReadCI32PixelDB(const GLcontext * ctx, GLuint n, const GLint x[], const GLint y[],
- GLuint index[], const GLubyte mask[])
- {
- amigaMesaContext amesa;
- GLuint *db;
- GLuint *PtoI;
- GLuint col;
-
- amesa = (amigaMesaContext) ctx->DriverCtx;
- db = dbRGBAGet(amesa);
- PtoI = amesa->PtoI;
-
- DEBUGOUT(1, "cybReadCI32PixelDB(%d)\n", n);
-
- for (--(GLshort)n; (GLshort)n >= 0; (GLshort)n--, INDEXi++, Xx++, Yy++) {
- if (*mask++) {
- /* index[i] = read_pixel x[i], y[i] */
- col = *(dbRGBA(db, *Xx, *Yy));
-
- /* this means:
- * -make a quick match and get a pen (color-quantization!)
- * -convert the pen to index
- */
- *INDEXi = GetIndexLocal(PLG_RGBA(amesa, (GLubyte) (col >> 24),
- (GLubyte) (col >> 16),
- (GLubyte) (col >> 8))) & 0xFF;
- }
- }
- }
-