mirror of
https://github.com/reactos/reactos.git
synced 2024-08-26 05:08:39 +00:00
![Jérôme Gardou](/assets/img/avatar_default.png)
With this commit, we now use a forked version of MESA which only supports OpenGL 1.1, like the windows implementation does. It exposes : - The same pixel formats - The same set of extensions - Nothing more All of this without taking 10% of your build time. If you need a more modern option, look at the MESA package from Rapps, which is (and must be) maintained outside of this code tree. CORE-7499
201 lines
5.1 KiB
C
201 lines
5.1 KiB
C
/* $Id: masking.c,v 1.5 1997/07/24 01:23:16 brianp Exp $ */
|
|
|
|
/*
|
|
* Mesa 3-D graphics library
|
|
* Version: 2.4
|
|
* Copyright (C) 1995-1997 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.
|
|
*/
|
|
|
|
|
|
/*
|
|
* $Log: masking.c,v $
|
|
* Revision 1.5 1997/07/24 01:23:16 brianp
|
|
* changed precompiled header symbol from PCH to PC_HEADER
|
|
*
|
|
* Revision 1.4 1997/05/28 03:25:43 brianp
|
|
* added precompiled header (PCH) support
|
|
*
|
|
* Revision 1.3 1996/11/06 04:19:40 brianp
|
|
* now call gl_read_color/index_span() instead of device driver function
|
|
*
|
|
* Revision 1.2 1996/10/25 00:07:46 brianp
|
|
* changed MAX_WIDTH to PB_SIZE in gl_mask_index_pixels()
|
|
*
|
|
* Revision 1.1 1996/09/13 01:38:16 brianp
|
|
* Initial revision
|
|
*
|
|
*/
|
|
|
|
|
|
/*
|
|
* Implement the effect of glColorMask and glIndexMask in software.
|
|
*/
|
|
|
|
|
|
#ifdef PC_HEADER
|
|
#include "all.h"
|
|
#else
|
|
#include <string.h>
|
|
#include "alphabuf.h"
|
|
#include "context.h"
|
|
#include "macros.h"
|
|
#include "masking.h"
|
|
#include "pb.h"
|
|
#include "span.h"
|
|
#include "types.h"
|
|
#endif
|
|
|
|
|
|
|
|
void gl_IndexMask( GLcontext *ctx, GLuint mask )
|
|
{
|
|
if (INSIDE_BEGIN_END(ctx)) {
|
|
gl_error( ctx, GL_INVALID_OPERATION, "glIndexMask" );
|
|
return;
|
|
}
|
|
ctx->Color.IndexMask = mask;
|
|
ctx->NewState |= NEW_RASTER_OPS;
|
|
}
|
|
|
|
|
|
|
|
void gl_ColorMask( GLcontext *ctx, GLboolean red, GLboolean green,
|
|
GLboolean blue, GLboolean alpha )
|
|
{
|
|
if (INSIDE_BEGIN_END(ctx)) {
|
|
gl_error( ctx, GL_INVALID_OPERATION, "glColorMask" );
|
|
return;
|
|
}
|
|
ctx->Color.ColorMask = (red << 3) | (green << 2) | (blue << 1) | alpha;
|
|
ctx->NewState |= NEW_RASTER_OPS;
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
* Apply glColorMask to a span of RGBA pixels.
|
|
*/
|
|
void gl_mask_color_span( GLcontext *ctx,
|
|
GLuint n, GLint x, GLint y,
|
|
GLubyte red[], GLubyte green[],
|
|
GLubyte blue[], GLubyte alpha[] )
|
|
{
|
|
GLubyte r[MAX_WIDTH], g[MAX_WIDTH], b[MAX_WIDTH], a[MAX_WIDTH];
|
|
|
|
gl_read_color_span( ctx, n, x, y, r, g, b, a );
|
|
|
|
if ((ctx->Color.ColorMask & 8) == 0) {
|
|
/* replace source reds with frame buffer reds */
|
|
MEMCPY( red, r, n );
|
|
}
|
|
if ((ctx->Color.ColorMask & 4) == 0) {
|
|
/* replace source greens with frame buffer greens */
|
|
MEMCPY( green, g, n );
|
|
}
|
|
if ((ctx->Color.ColorMask & 2) == 0) {
|
|
/* replace source blues with frame buffer blues */
|
|
MEMCPY( blue, b, n );
|
|
}
|
|
if ((ctx->Color.ColorMask & 1) == 0) {
|
|
/* replace source alphas with frame buffer alphas */
|
|
MEMCPY( alpha, a, n );
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* Apply glColorMask to an array of RGBA pixels.
|
|
*/
|
|
void gl_mask_color_pixels( GLcontext *ctx,
|
|
GLuint n, const GLint x[], const GLint y[],
|
|
GLubyte red[], GLubyte green[],
|
|
GLubyte blue[], GLubyte alpha[],
|
|
const GLubyte mask[] )
|
|
{
|
|
GLubyte r[PB_SIZE], g[PB_SIZE], b[PB_SIZE], a[PB_SIZE];
|
|
|
|
(*ctx->Driver.ReadColorPixels)( ctx, n, x, y, r, g, b, a, mask );
|
|
if (ctx->RasterMask & ALPHABUF_BIT) {
|
|
gl_read_alpha_pixels( ctx, n, x, y, a, mask );
|
|
}
|
|
|
|
if ((ctx->Color.ColorMask & 8) == 0) {
|
|
/* replace source reds with frame buffer reds */
|
|
MEMCPY( red, r, n );
|
|
}
|
|
if ((ctx->Color.ColorMask & 4) == 0) {
|
|
/* replace source greens with frame buffer greens */
|
|
MEMCPY( green, g, n );
|
|
}
|
|
if ((ctx->Color.ColorMask & 2) == 0) {
|
|
/* replace source blues with frame buffer blues */
|
|
MEMCPY( blue, b, n );
|
|
}
|
|
if ((ctx->Color.ColorMask & 1) == 0) {
|
|
/* replace source alphas with frame buffer alphas */
|
|
MEMCPY( alpha, a, n );
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* Apply glIndexMask to a span of CI pixels.
|
|
*/
|
|
void gl_mask_index_span( GLcontext *ctx,
|
|
GLuint n, GLint x, GLint y, GLuint index[] )
|
|
{
|
|
GLuint i;
|
|
GLuint fbindexes[MAX_WIDTH];
|
|
GLuint msrc, mdest;
|
|
|
|
gl_read_index_span( ctx, n, x, y, fbindexes );
|
|
|
|
msrc = ctx->Color.IndexMask;
|
|
mdest = ~msrc;
|
|
|
|
for (i=0;i<n;i++) {
|
|
index[i] = (index[i] & msrc) | (fbindexes[i] & mdest);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* Apply glIndexMask to an array of CI pixels.
|
|
*/
|
|
void gl_mask_index_pixels( GLcontext *ctx,
|
|
GLuint n, const GLint x[], const GLint y[],
|
|
GLuint index[], const GLubyte mask[] )
|
|
{
|
|
GLuint i;
|
|
GLuint fbindexes[PB_SIZE];
|
|
GLuint msrc, mdest;
|
|
|
|
(*ctx->Driver.ReadIndexPixels)( ctx, n, x, y, fbindexes, mask );
|
|
|
|
msrc = ctx->Color.IndexMask;
|
|
mdest = ~msrc;
|
|
|
|
for (i=0;i<n;i++) {
|
|
index[i] = (index[i] & msrc) | (fbindexes[i] & mdest);
|
|
}
|
|
}
|
|
|