| 1 | /* |
| 2 | * Mesa 3-D graphics library |
| 3 | * Version: 6.3 |
| 4 | * |
| 5 | * Copyright (C) 1999-2004 Brian Paul All Rights Reserved. |
| 6 | * |
| 7 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 8 | * copy of this software and associated documentation files (the "Software"), |
| 9 | * to deal in the Software without restriction, including without limitation |
| 10 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 11 | * and/or sell copies of the Software, and to permit persons to whom the |
| 12 | * Software is furnished to do so, subject to the following conditions: |
| 13 | * |
| 14 | * The above copyright notice and this permission notice shall be included |
| 15 | * in all copies or substantial portions of the Software. |
| 16 | * |
| 17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| 18 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 20 | * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN |
| 21 | * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 22 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 23 | */ |
| 24 | |
| 25 | /* Copyright (C) 2007 Hiroshi Morii <koolsmoky(at)users.sourceforge.net> |
| 26 | * _mesa_upscale_teximage2d speedup |
| 27 | */ |
| 28 | |
| 29 | #include <assert.h> |
| 30 | |
| 31 | #include "types.h" |
| 32 | #include "internal.h" |
| 33 | |
| 34 | |
| 35 | void |
| 36 | _mesa_upscale_teximage2d (unsigned int inWidth, unsigned int inHeight, |
| 37 | unsigned int outWidth, unsigned int outHeight, |
| 38 | unsigned int comps, |
| 39 | const byte *src, int srcRowStride, |
| 40 | byte *dest) |
| 41 | { |
| 42 | unsigned int i, j, k; |
| 43 | |
| 44 | assert(outWidth >= inWidth); |
| 45 | assert(outHeight >= inHeight); |
| 46 | |
| 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]; |
| 54 | } |
| 55 | } |
| 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]; |
| 61 | } |
| 62 | } |
| 63 | } |
| 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]; |
| 70 | } |
| 71 | } |
| 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]; |
| 77 | } |
| 78 | } |
| 79 | } |
| 80 | #else |
| 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]; |
| 89 | } |
| 90 | } |
| 91 | } |
| 92 | #endif |
| 93 | } |