2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2004 Brian Paul All Rights Reserved.
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25 /* Copyright (C) 2007 Hiroshi Morii <koolsmoky(at)users.sourceforge.net>
26 * _mesa_upscale_teximage2d speedup
36 _mesa_upscale_teximage2d (unsigned int inWidth, unsigned int inHeight,
37 unsigned int outWidth, unsigned int outHeight,
39 const byte *src, int srcRowStride,
44 assert(outWidth >= inWidth);
45 assert(outHeight >= inHeight);
47 #if 1 /* H.Morii - faster loops */
48 for (i = 0; i < inHeight; i++) {
49 for (j = 0; j < inWidth; j++) {
50 const int aa = (i * outWidth + j) * comps;
51 const int bb = i * srcRowStride + j * comps;
52 for (k = 0; k < comps; k++) {
53 dest[aa + k] = src[bb + k];
56 for (; j < outWidth; j++) {
57 const int aa = (i * outWidth + j) * comps;
58 const int bb = i * srcRowStride + (j - inWidth) * comps;
59 for (k = 0; k < comps; k++) {
60 dest[aa + k] = src[bb + k];
64 for (; i < outHeight; i++) {
65 for (j = 0; j < inWidth; j++) {
66 const int aa = (i * outWidth + j) * comps;
67 const int bb = (i - inHeight) * srcRowStride + j * comps;
68 for (k = 0; k < comps; k++) {
69 dest[aa + k] = src[bb + k];
72 for (; j < outWidth; j++) {
73 const int aa = (i * outWidth + j) * comps;
74 const int bb = (i - inHeight) * srcRowStride + (j - inWidth) * comps;
75 for (k = 0; k < comps; k++) {
76 dest[aa + k] = src[bb + k];
81 for (i = 0; i < outHeight; i++) {
82 const int ii = i % inHeight;
83 for (j = 0; j < outWidth; j++) {
84 const int jj = j % inWidth;
85 const int aa = (i * outWidth + j) * comps;
86 const int bb = ii * srcRowStride + jj * comps;
87 for (k = 0; k < comps; k++) {
88 dest[aa + k] = src[bb + k];