From f4092abdf94af6a99aff944d6264bc1284e8bdd4 Mon Sep 17 00:00:00 2001 From: Reinhard Tartler Date: Mon, 10 Oct 2011 17:43:39 +0200 Subject: Imported nx-X11-3.1.0-1.tar.gz Summary: Imported nx-X11-3.1.0-1.tar.gz Keywords: Imported nx-X11-3.1.0-1.tar.gz into Git repository --- nx-X11/extras/Mesa/src/mesa/swrast/s_masking.c | 172 +++++++++++++++++++++++++ 1 file changed, 172 insertions(+) create mode 100644 nx-X11/extras/Mesa/src/mesa/swrast/s_masking.c (limited to 'nx-X11/extras/Mesa/src/mesa/swrast/s_masking.c') diff --git a/nx-X11/extras/Mesa/src/mesa/swrast/s_masking.c b/nx-X11/extras/Mesa/src/mesa/swrast/s_masking.c new file mode 100644 index 000000000..65c4e7d01 --- /dev/null +++ b/nx-X11/extras/Mesa/src/mesa/swrast/s_masking.c @@ -0,0 +1,172 @@ +/* + * Mesa 3-D graphics library + * Version: 6.3 + * + * Copyright (C) 1999-2005 Brian Paul All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN + * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + + +/* + * Implement the effect of glColorMask and glIndexMask in software. + */ + + +#include "glheader.h" +#include "enums.h" +#include "macros.h" + +#include "s_context.h" +#include "s_masking.h" +#include "s_span.h" + + + +void +_swrast_mask_rgba_span(GLcontext *ctx, struct gl_renderbuffer *rb, + const struct sw_span *span, GLchan rgba[][4]) +{ + GLchan dest[MAX_WIDTH][4]; +#if CHAN_BITS == 8 + GLuint srcMask = *((GLuint*)ctx->Color.ColorMask); + GLuint dstMask = ~srcMask; + GLuint *rgba32 = (GLuint *) rgba; + GLuint *dest32 = (GLuint *) dest; +#else + const GLboolean rMask = ctx->Color.ColorMask[RCOMP]; + const GLboolean gMask = ctx->Color.ColorMask[GCOMP]; + const GLboolean bMask = ctx->Color.ColorMask[BCOMP]; + const GLboolean aMask = ctx->Color.ColorMask[ACOMP]; +#endif + const GLuint n = span->end; + GLuint i; + + ASSERT(n < MAX_WIDTH); + ASSERT(span->arrayMask & SPAN_RGBA); + + if (span->arrayMask & SPAN_XY) { + _swrast_get_values(ctx, rb, n, span->array->x, span->array->y, + dest, 4 * sizeof(GLchan)); + } + else { + _swrast_read_rgba_span(ctx, rb, n, span->x, span->y, dest); + } + +#if CHAN_BITS == 8 + for (i = 0; i < n; i++) { + rgba32[i] = (rgba32[i] & srcMask) | (dest32[i] & dstMask); + } +#else + for (i = 0; i < n; i++) { + if (!rMask) rgba[i][RCOMP] = dest[i][RCOMP]; + if (!gMask) rgba[i][GCOMP] = dest[i][GCOMP]; + if (!bMask) rgba[i][BCOMP] = dest[i][BCOMP]; + if (!aMask) rgba[i][ACOMP] = dest[i][ACOMP]; + } +#endif +} + + +/* + * Apply glColorMask to a span of RGBA pixels. + */ +void +_swrast_mask_rgba_array(GLcontext *ctx, struct gl_renderbuffer *rb, + GLuint n, GLint x, GLint y, GLchan rgba[][4]) +{ + GLchan dest[MAX_WIDTH][4]; + GLuint i; + +#if CHAN_BITS == 8 + + GLuint srcMask = *((GLuint*)ctx->Color.ColorMask); + GLuint dstMask = ~srcMask; + GLuint *rgba32 = (GLuint *) rgba; + GLuint *dest32 = (GLuint *) dest; + + _swrast_read_rgba_span( ctx, rb, n, x, y, dest ); + for (i = 0; i < n; i++) { + rgba32[i] = (rgba32[i] & srcMask) | (dest32[i] & dstMask); + } + +#else + + const GLint rMask = ctx->Color.ColorMask[RCOMP]; + const GLint gMask = ctx->Color.ColorMask[GCOMP]; + const GLint bMask = ctx->Color.ColorMask[BCOMP]; + const GLint aMask = ctx->Color.ColorMask[ACOMP]; + + _swrast_read_rgba_span( ctx, rb, n, x, y, dest ); + for (i = 0; i < n; i++) { + if (!rMask) rgba[i][RCOMP] = dest[i][RCOMP]; + if (!gMask) rgba[i][GCOMP] = dest[i][GCOMP]; + if (!bMask) rgba[i][BCOMP] = dest[i][BCOMP]; + if (!aMask) rgba[i][ACOMP] = dest[i][ACOMP]; + } + +#endif +} + + + +void +_swrast_mask_ci_span(GLcontext *ctx, struct gl_renderbuffer *rb, + const struct sw_span *span, GLuint index[]) +{ + const GLuint srcMask = ctx->Color.IndexMask; + const GLuint dstMask = ~srcMask; + GLuint dest[MAX_WIDTH]; + GLuint i; + + ASSERT(span->arrayMask & SPAN_INDEX); + ASSERT(span->end <= MAX_WIDTH); + ASSERT(rb->DataType == GL_UNSIGNED_INT); + + if (span->arrayMask & SPAN_XY) { + _swrast_get_values(ctx, rb, span->end, span->array->x, span->array->y, + dest, sizeof(GLuint)); + } + else { + _swrast_read_index_span(ctx, rb, span->end, span->x, span->y, dest); + } + + for (i = 0; i < span->end; i++) { + index[i] = (index[i] & srcMask) | (dest[i] & dstMask); + } +} + + +/* + * Apply glIndexMask to an array of CI pixels. + */ +void +_swrast_mask_ci_array(GLcontext *ctx, struct gl_renderbuffer *rb, + GLuint n, GLint x, GLint y, GLuint index[]) +{ + const GLuint srcMask = ctx->Color.IndexMask; + const GLuint dstMask = ~srcMask; + GLuint dest[MAX_WIDTH]; + GLuint i; + + _swrast_read_index_span(ctx, rb, n, x, y, dest); + + for (i=0;i