94 lines
3.0 KiB
C
94 lines
3.0 KiB
C
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/*
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* Mesa 3-D graphics library
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* Version: 6.3
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*
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* Copyright (C) 1999-2004 Brian Paul All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/* Copyright (C) 2007 Hiroshi Morii <koolsmoky(at)users.sourceforge.net>
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* _mesa_upscale_teximage2d speedup
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*/
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#include <assert.h>
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#include "types.h"
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#include "internal.h"
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void
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_mesa_upscale_teximage2d (unsigned int inWidth, unsigned int inHeight,
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unsigned int outWidth, unsigned int outHeight,
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unsigned int comps,
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const byte *src, int srcRowStride,
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byte *dest)
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{
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unsigned int i, j, k;
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assert(outWidth >= inWidth);
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assert(outHeight >= inHeight);
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#if 1 /* H.Morii - faster loops */
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for (i = 0; i < inHeight; i++) {
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for (j = 0; j < inWidth; j++) {
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const int aa = (i * outWidth + j) * comps;
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const int bb = i * srcRowStride + j * comps;
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for (k = 0; k < comps; k++) {
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dest[aa + k] = src[bb + k];
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}
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}
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for (; j < outWidth; j++) {
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const int aa = (i * outWidth + j) * comps;
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const int bb = i * srcRowStride + (j - inWidth) * comps;
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for (k = 0; k < comps; k++) {
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dest[aa + k] = src[bb + k];
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}
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}
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}
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for (; i < outHeight; i++) {
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for (j = 0; j < inWidth; j++) {
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const int aa = (i * outWidth + j) * comps;
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const int bb = (i - inHeight) * srcRowStride + j * comps;
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for (k = 0; k < comps; k++) {
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dest[aa + k] = src[bb + k];
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}
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}
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for (; j < outWidth; j++) {
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const int aa = (i * outWidth + j) * comps;
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const int bb = (i - inHeight) * srcRowStride + (j - inWidth) * comps;
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for (k = 0; k < comps; k++) {
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dest[aa + k] = src[bb + k];
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}
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}
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}
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#else
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for (i = 0; i < outHeight; i++) {
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const int ii = i % inHeight;
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for (j = 0; j < outWidth; j++) {
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const int jj = j % inWidth;
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const int aa = (i * outWidth + j) * comps;
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const int bb = ii * srcRowStride + jj * comps;
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for (k = 0; k < comps; k++) {
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dest[aa + k] = src[bb + k];
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}
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}
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}
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#endif
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}
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