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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1901 | serge | 1 | /* |
| 2 | * Mesa 3-D graphics library |
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| 3 | * Version: 7.1 |
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| 4 | * |
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| 5 | * Copyright (C) 1999-2007 Brian Paul All Rights Reserved. |
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| 6 | * |
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| 7 | * Permission is hereby granted, free of charge, to any person obtaining a |
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| 8 | * copy of this software and associated documentation files (the "Software"), |
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| 9 | * to deal in the Software without restriction, including without limitation |
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| 10 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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| 11 | * and/or sell copies of the Software, and to permit persons to whom the |
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| 12 | * Software is furnished to do so, subject to the following conditions: |
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| 13 | * |
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| 14 | * The above copyright notice and this permission notice shall be included |
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| 15 | * in all copies or substantial portions of the Software. |
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| 16 | * |
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| 17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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| 18 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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| 20 | * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN |
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| 21 | * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
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| 22 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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| 23 | */ |
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| 24 | |||
| 25 | |||
| 26 | /** |
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| 27 | * \file mipmap.c mipmap generation and teximage resizing functions. |
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| 28 | */ |
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| 29 | |||
| 30 | #include "imports.h" |
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| 31 | #include "formats.h" |
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| 32 | #include "mipmap.h" |
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| 33 | #include "teximage.h" |
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| 34 | #include "texstore.h" |
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| 35 | #include "image.h" |
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| 36 | |||
| 37 | |||
| 38 | |||
| 39 | static GLint |
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| 40 | bytes_per_pixel(GLenum datatype, GLuint comps) |
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| 41 | { |
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| 42 | GLint b = _mesa_sizeof_packed_type(datatype); |
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| 43 | assert(b >= 0); |
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| 44 | |||
| 45 | if (_mesa_type_is_packed(datatype)) |
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| 46 | return b; |
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| 47 | else |
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| 48 | return b * comps; |
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| 49 | } |
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| 50 | |||
| 51 | |||
| 52 | /** |
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| 53 | * \name Support macros for do_row and do_row_3d |
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| 54 | * |
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| 55 | * The macro madness is here for two reasons. First, it compacts the code |
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| 56 | * slightly. Second, it makes it much easier to adjust the specifics of the |
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| 57 | * filter to tune the rounding characteristics. |
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| 58 | */ |
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| 59 | /*@{*/ |
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| 60 | #define DECLARE_ROW_POINTERS(t, e) \ |
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| 61 | const t(*rowA)[e] = (const t(*)[e]) srcRowA; \ |
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| 62 | const t(*rowB)[e] = (const t(*)[e]) srcRowB; \ |
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| 63 | const t(*rowC)[e] = (const t(*)[e]) srcRowC; \ |
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| 64 | const t(*rowD)[e] = (const t(*)[e]) srcRowD; \ |
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| 65 | t(*dst)[e] = (t(*)[e]) dstRow |
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| 66 | |||
| 67 | #define DECLARE_ROW_POINTERS0(t) \ |
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| 68 | const t *rowA = (const t *) srcRowA; \ |
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| 69 | const t *rowB = (const t *) srcRowB; \ |
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| 70 | const t *rowC = (const t *) srcRowC; \ |
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| 71 | const t *rowD = (const t *) srcRowD; \ |
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| 72 | t *dst = (t *) dstRow |
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| 73 | |||
| 74 | #define FILTER_SUM_3D(Aj, Ak, Bj, Bk, Cj, Ck, Dj, Dk) \ |
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| 75 | ((unsigned) Aj + (unsigned) Ak \ |
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| 76 | + (unsigned) Bj + (unsigned) Bk \ |
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| 77 | + (unsigned) Cj + (unsigned) Ck \ |
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| 78 | + (unsigned) Dj + (unsigned) Dk \ |
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| 79 | + 4) >> 3 |
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| 80 | |||
| 81 | #define FILTER_3D(e) \ |
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| 82 | do { \ |
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| 83 | dst[i][e] = FILTER_SUM_3D(rowA[j][e], rowA[k][e], \ |
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| 84 | rowB[j][e], rowB[k][e], \ |
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| 85 | rowC[j][e], rowC[k][e], \ |
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| 86 | rowD[j][e], rowD[k][e]); \ |
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| 87 | } while(0) |
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| 88 | |||
| 89 | #define FILTER_SUM_3D_SIGNED(Aj, Ak, Bj, Bk, Cj, Ck, Dj, Dk) \ |
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| 90 | (Aj + Ak \ |
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| 91 | + Bj + Bk \ |
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| 92 | + Cj + Ck \ |
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| 93 | + Dj + Dk \ |
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| 94 | + 4) / 8 |
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| 95 | |||
| 96 | #define FILTER_3D_SIGNED(e) \ |
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| 97 | do { \ |
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| 98 | dst[i][e] = FILTER_SUM_3D_SIGNED(rowA[j][e], rowA[k][e], \ |
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| 99 | rowB[j][e], rowB[k][e], \ |
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| 100 | rowC[j][e], rowC[k][e], \ |
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| 101 | rowD[j][e], rowD[k][e]); \ |
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| 102 | } while(0) |
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| 103 | |||
| 104 | #define FILTER_F_3D(e) \ |
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| 105 | do { \ |
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| 106 | dst[i][e] = (rowA[j][e] + rowA[k][e] \ |
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| 107 | + rowB[j][e] + rowB[k][e] \ |
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| 108 | + rowC[j][e] + rowC[k][e] \ |
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| 109 | + rowD[j][e] + rowD[k][e]) * 0.125F; \ |
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| 110 | } while(0) |
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| 111 | |||
| 112 | #define FILTER_HF_3D(e) \ |
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| 113 | do { \ |
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| 114 | const GLfloat aj = _mesa_half_to_float(rowA[j][e]); \ |
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| 115 | const GLfloat ak = _mesa_half_to_float(rowA[k][e]); \ |
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| 116 | const GLfloat bj = _mesa_half_to_float(rowB[j][e]); \ |
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| 117 | const GLfloat bk = _mesa_half_to_float(rowB[k][e]); \ |
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| 118 | const GLfloat cj = _mesa_half_to_float(rowC[j][e]); \ |
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| 119 | const GLfloat ck = _mesa_half_to_float(rowC[k][e]); \ |
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| 120 | const GLfloat dj = _mesa_half_to_float(rowD[j][e]); \ |
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| 121 | const GLfloat dk = _mesa_half_to_float(rowD[k][e]); \ |
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| 122 | dst[i][e] = _mesa_float_to_half((aj + ak + bj + bk + cj + ck + dj + dk) \ |
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| 123 | * 0.125F); \ |
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| 124 | } while(0) |
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| 125 | /*@}*/ |
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| 126 | |||
| 127 | |||
| 128 | /** |
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| 129 | * Average together two rows of a source image to produce a single new |
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| 130 | * row in the dest image. It's legal for the two source rows to point |
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| 131 | * to the same data. The source width must be equal to either the |
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| 132 | * dest width or two times the dest width. |
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| 133 | * \param datatype GL_UNSIGNED_BYTE, GL_UNSIGNED_SHORT, GL_FLOAT, etc. |
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| 134 | * \param comps number of components per pixel (1..4) |
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| 135 | */ |
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| 136 | static void |
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| 137 | do_row(GLenum datatype, GLuint comps, GLint srcWidth, |
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| 138 | const GLvoid *srcRowA, const GLvoid *srcRowB, |
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| 139 | GLint dstWidth, GLvoid *dstRow) |
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| 140 | { |
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| 141 | const GLuint k0 = (srcWidth == dstWidth) ? 0 : 1; |
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| 142 | const GLuint colStride = (srcWidth == dstWidth) ? 1 : 2; |
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| 143 | |||
| 144 | ASSERT(comps >= 1); |
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| 145 | ASSERT(comps <= 4); |
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| 146 | |||
| 147 | /* This assertion is no longer valid with non-power-of-2 textures |
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| 148 | assert(srcWidth == dstWidth || srcWidth == 2 * dstWidth); |
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| 149 | */ |
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| 150 | |||
| 151 | if (datatype == GL_UNSIGNED_BYTE && comps == 4) { |
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| 152 | GLuint i, j, k; |
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| 153 | const GLubyte(*rowA)[4] = (const GLubyte(*)[4]) srcRowA; |
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| 154 | const GLubyte(*rowB)[4] = (const GLubyte(*)[4]) srcRowB; |
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| 155 | GLubyte(*dst)[4] = (GLubyte(*)[4]) dstRow; |
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| 156 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
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| 157 | i++, j += colStride, k += colStride) { |
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| 158 | dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) / 4; |
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| 159 | dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) / 4; |
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| 160 | dst[i][2] = (rowA[j][2] + rowA[k][2] + rowB[j][2] + rowB[k][2]) / 4; |
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| 161 | dst[i][3] = (rowA[j][3] + rowA[k][3] + rowB[j][3] + rowB[k][3]) / 4; |
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| 162 | } |
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| 163 | } |
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| 164 | else if (datatype == GL_UNSIGNED_BYTE && comps == 3) { |
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| 165 | GLuint i, j, k; |
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| 166 | const GLubyte(*rowA)[3] = (const GLubyte(*)[3]) srcRowA; |
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| 167 | const GLubyte(*rowB)[3] = (const GLubyte(*)[3]) srcRowB; |
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| 168 | GLubyte(*dst)[3] = (GLubyte(*)[3]) dstRow; |
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| 169 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
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| 170 | i++, j += colStride, k += colStride) { |
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| 171 | dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) / 4; |
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| 172 | dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) / 4; |
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| 173 | dst[i][2] = (rowA[j][2] + rowA[k][2] + rowB[j][2] + rowB[k][2]) / 4; |
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| 174 | } |
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| 175 | } |
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| 176 | else if (datatype == GL_UNSIGNED_BYTE && comps == 2) { |
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| 177 | GLuint i, j, k; |
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| 178 | const GLubyte(*rowA)[2] = (const GLubyte(*)[2]) srcRowA; |
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| 179 | const GLubyte(*rowB)[2] = (const GLubyte(*)[2]) srcRowB; |
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| 180 | GLubyte(*dst)[2] = (GLubyte(*)[2]) dstRow; |
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| 181 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
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| 182 | i++, j += colStride, k += colStride) { |
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| 183 | dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) >> 2; |
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| 184 | dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) >> 2; |
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| 185 | } |
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| 186 | } |
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| 187 | else if (datatype == GL_UNSIGNED_BYTE && comps == 1) { |
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| 188 | GLuint i, j, k; |
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| 189 | const GLubyte *rowA = (const GLubyte *) srcRowA; |
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| 190 | const GLubyte *rowB = (const GLubyte *) srcRowB; |
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| 191 | GLubyte *dst = (GLubyte *) dstRow; |
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| 192 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
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| 193 | i++, j += colStride, k += colStride) { |
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| 194 | dst[i] = (rowA[j] + rowA[k] + rowB[j] + rowB[k]) >> 2; |
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| 195 | } |
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| 196 | } |
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| 197 | |||
| 198 | else if (datatype == GL_BYTE && comps == 4) { |
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| 199 | GLuint i, j, k; |
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| 200 | const GLbyte(*rowA)[4] = (const GLbyte(*)[4]) srcRowA; |
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| 201 | const GLbyte(*rowB)[4] = (const GLbyte(*)[4]) srcRowB; |
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| 202 | GLbyte(*dst)[4] = (GLbyte(*)[4]) dstRow; |
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| 203 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
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| 204 | i++, j += colStride, k += colStride) { |
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| 205 | dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) / 4; |
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| 206 | dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) / 4; |
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| 207 | dst[i][2] = (rowA[j][2] + rowA[k][2] + rowB[j][2] + rowB[k][2]) / 4; |
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| 208 | dst[i][3] = (rowA[j][3] + rowA[k][3] + rowB[j][3] + rowB[k][3]) / 4; |
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| 209 | } |
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| 210 | } |
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| 211 | else if (datatype == GL_BYTE && comps == 3) { |
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| 212 | GLuint i, j, k; |
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| 213 | const GLbyte(*rowA)[3] = (const GLbyte(*)[3]) srcRowA; |
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| 214 | const GLbyte(*rowB)[3] = (const GLbyte(*)[3]) srcRowB; |
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| 215 | GLbyte(*dst)[3] = (GLbyte(*)[3]) dstRow; |
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| 216 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
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| 217 | i++, j += colStride, k += colStride) { |
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| 218 | dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) / 4; |
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| 219 | dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) / 4; |
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| 220 | dst[i][2] = (rowA[j][2] + rowA[k][2] + rowB[j][2] + rowB[k][2]) / 4; |
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| 221 | } |
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| 222 | } |
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| 223 | else if (datatype == GL_BYTE && comps == 2) { |
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| 224 | GLuint i, j, k; |
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| 225 | const GLbyte(*rowA)[2] = (const GLbyte(*)[2]) srcRowA; |
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| 226 | const GLbyte(*rowB)[2] = (const GLbyte(*)[2]) srcRowB; |
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| 227 | GLbyte(*dst)[2] = (GLbyte(*)[2]) dstRow; |
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| 228 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
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| 229 | i++, j += colStride, k += colStride) { |
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| 230 | dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) / 4; |
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| 231 | dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) / 4; |
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| 232 | } |
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| 233 | } |
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| 234 | else if (datatype == GL_BYTE && comps == 1) { |
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| 235 | GLuint i, j, k; |
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| 236 | const GLbyte *rowA = (const GLbyte *) srcRowA; |
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| 237 | const GLbyte *rowB = (const GLbyte *) srcRowB; |
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| 238 | GLbyte *dst = (GLbyte *) dstRow; |
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| 239 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
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| 240 | i++, j += colStride, k += colStride) { |
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| 241 | dst[i] = (rowA[j] + rowA[k] + rowB[j] + rowB[k]) / 4; |
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| 242 | } |
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| 243 | } |
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| 244 | |||
| 245 | else if (datatype == GL_UNSIGNED_SHORT && comps == 4) { |
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| 246 | GLuint i, j, k; |
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| 247 | const GLushort(*rowA)[4] = (const GLushort(*)[4]) srcRowA; |
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| 248 | const GLushort(*rowB)[4] = (const GLushort(*)[4]) srcRowB; |
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| 249 | GLushort(*dst)[4] = (GLushort(*)[4]) dstRow; |
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| 250 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
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| 251 | i++, j += colStride, k += colStride) { |
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| 252 | dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) / 4; |
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| 253 | dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) / 4; |
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| 254 | dst[i][2] = (rowA[j][2] + rowA[k][2] + rowB[j][2] + rowB[k][2]) / 4; |
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| 255 | dst[i][3] = (rowA[j][3] + rowA[k][3] + rowB[j][3] + rowB[k][3]) / 4; |
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| 256 | } |
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| 257 | } |
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| 258 | else if (datatype == GL_UNSIGNED_SHORT && comps == 3) { |
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| 259 | GLuint i, j, k; |
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| 260 | const GLushort(*rowA)[3] = (const GLushort(*)[3]) srcRowA; |
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| 261 | const GLushort(*rowB)[3] = (const GLushort(*)[3]) srcRowB; |
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| 262 | GLushort(*dst)[3] = (GLushort(*)[3]) dstRow; |
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| 263 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
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| 264 | i++, j += colStride, k += colStride) { |
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| 265 | dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) / 4; |
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| 266 | dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) / 4; |
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| 267 | dst[i][2] = (rowA[j][2] + rowA[k][2] + rowB[j][2] + rowB[k][2]) / 4; |
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| 268 | } |
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| 269 | } |
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| 270 | else if (datatype == GL_UNSIGNED_SHORT && comps == 2) { |
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| 271 | GLuint i, j, k; |
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| 272 | const GLushort(*rowA)[2] = (const GLushort(*)[2]) srcRowA; |
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| 273 | const GLushort(*rowB)[2] = (const GLushort(*)[2]) srcRowB; |
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| 274 | GLushort(*dst)[2] = (GLushort(*)[2]) dstRow; |
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| 275 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
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| 276 | i++, j += colStride, k += colStride) { |
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| 277 | dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) / 4; |
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| 278 | dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) / 4; |
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| 279 | } |
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| 280 | } |
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| 281 | else if (datatype == GL_UNSIGNED_SHORT && comps == 1) { |
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| 282 | GLuint i, j, k; |
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| 283 | const GLushort *rowA = (const GLushort *) srcRowA; |
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| 284 | const GLushort *rowB = (const GLushort *) srcRowB; |
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| 285 | GLushort *dst = (GLushort *) dstRow; |
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| 286 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
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| 287 | i++, j += colStride, k += colStride) { |
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| 288 | dst[i] = (rowA[j] + rowA[k] + rowB[j] + rowB[k]) / 4; |
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| 289 | } |
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| 290 | } |
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| 291 | |||
| 292 | else if (datatype == GL_SHORT && comps == 4) { |
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| 293 | GLuint i, j, k; |
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| 294 | const GLshort(*rowA)[4] = (const GLshort(*)[4]) srcRowA; |
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| 295 | const GLshort(*rowB)[4] = (const GLshort(*)[4]) srcRowB; |
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| 296 | GLshort(*dst)[4] = (GLshort(*)[4]) dstRow; |
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| 297 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
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| 298 | i++, j += colStride, k += colStride) { |
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| 299 | dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) / 4; |
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| 300 | dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) / 4; |
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| 301 | dst[i][2] = (rowA[j][2] + rowA[k][2] + rowB[j][2] + rowB[k][2]) / 4; |
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| 302 | dst[i][3] = (rowA[j][3] + rowA[k][3] + rowB[j][3] + rowB[k][3]) / 4; |
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| 303 | } |
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| 304 | } |
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| 305 | else if (datatype == GL_SHORT && comps == 3) { |
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| 306 | GLuint i, j, k; |
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| 307 | const GLshort(*rowA)[3] = (const GLshort(*)[3]) srcRowA; |
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| 308 | const GLshort(*rowB)[3] = (const GLshort(*)[3]) srcRowB; |
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| 309 | GLshort(*dst)[3] = (GLshort(*)[3]) dstRow; |
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| 310 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
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| 311 | i++, j += colStride, k += colStride) { |
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| 312 | dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) / 4; |
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| 313 | dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) / 4; |
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| 314 | dst[i][2] = (rowA[j][2] + rowA[k][2] + rowB[j][2] + rowB[k][2]) / 4; |
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| 315 | } |
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| 316 | } |
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| 317 | else if (datatype == GL_SHORT && comps == 2) { |
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| 318 | GLuint i, j, k; |
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| 319 | const GLshort(*rowA)[2] = (const GLshort(*)[2]) srcRowA; |
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| 320 | const GLshort(*rowB)[2] = (const GLshort(*)[2]) srcRowB; |
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| 321 | GLshort(*dst)[2] = (GLshort(*)[2]) dstRow; |
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| 322 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
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| 323 | i++, j += colStride, k += colStride) { |
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| 324 | dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) / 4; |
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| 325 | dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) / 4; |
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| 326 | } |
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| 327 | } |
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| 328 | else if (datatype == GL_SHORT && comps == 1) { |
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| 329 | GLuint i, j, k; |
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| 330 | const GLshort *rowA = (const GLshort *) srcRowA; |
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| 331 | const GLshort *rowB = (const GLshort *) srcRowB; |
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| 332 | GLshort *dst = (GLshort *) dstRow; |
||
| 333 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 334 | i++, j += colStride, k += colStride) { |
||
| 335 | dst[i] = (rowA[j] + rowA[k] + rowB[j] + rowB[k]) / 4; |
||
| 336 | } |
||
| 337 | } |
||
| 338 | |||
| 339 | else if (datatype == GL_FLOAT && comps == 4) { |
||
| 340 | GLuint i, j, k; |
||
| 341 | const GLfloat(*rowA)[4] = (const GLfloat(*)[4]) srcRowA; |
||
| 342 | const GLfloat(*rowB)[4] = (const GLfloat(*)[4]) srcRowB; |
||
| 343 | GLfloat(*dst)[4] = (GLfloat(*)[4]) dstRow; |
||
| 344 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 345 | i++, j += colStride, k += colStride) { |
||
| 346 | dst[i][0] = (rowA[j][0] + rowA[k][0] + |
||
| 347 | rowB[j][0] + rowB[k][0]) * 0.25F; |
||
| 348 | dst[i][1] = (rowA[j][1] + rowA[k][1] + |
||
| 349 | rowB[j][1] + rowB[k][1]) * 0.25F; |
||
| 350 | dst[i][2] = (rowA[j][2] + rowA[k][2] + |
||
| 351 | rowB[j][2] + rowB[k][2]) * 0.25F; |
||
| 352 | dst[i][3] = (rowA[j][3] + rowA[k][3] + |
||
| 353 | rowB[j][3] + rowB[k][3]) * 0.25F; |
||
| 354 | } |
||
| 355 | } |
||
| 356 | else if (datatype == GL_FLOAT && comps == 3) { |
||
| 357 | GLuint i, j, k; |
||
| 358 | const GLfloat(*rowA)[3] = (const GLfloat(*)[3]) srcRowA; |
||
| 359 | const GLfloat(*rowB)[3] = (const GLfloat(*)[3]) srcRowB; |
||
| 360 | GLfloat(*dst)[3] = (GLfloat(*)[3]) dstRow; |
||
| 361 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 362 | i++, j += colStride, k += colStride) { |
||
| 363 | dst[i][0] = (rowA[j][0] + rowA[k][0] + |
||
| 364 | rowB[j][0] + rowB[k][0]) * 0.25F; |
||
| 365 | dst[i][1] = (rowA[j][1] + rowA[k][1] + |
||
| 366 | rowB[j][1] + rowB[k][1]) * 0.25F; |
||
| 367 | dst[i][2] = (rowA[j][2] + rowA[k][2] + |
||
| 368 | rowB[j][2] + rowB[k][2]) * 0.25F; |
||
| 369 | } |
||
| 370 | } |
||
| 371 | else if (datatype == GL_FLOAT && comps == 2) { |
||
| 372 | GLuint i, j, k; |
||
| 373 | const GLfloat(*rowA)[2] = (const GLfloat(*)[2]) srcRowA; |
||
| 374 | const GLfloat(*rowB)[2] = (const GLfloat(*)[2]) srcRowB; |
||
| 375 | GLfloat(*dst)[2] = (GLfloat(*)[2]) dstRow; |
||
| 376 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 377 | i++, j += colStride, k += colStride) { |
||
| 378 | dst[i][0] = (rowA[j][0] + rowA[k][0] + |
||
| 379 | rowB[j][0] + rowB[k][0]) * 0.25F; |
||
| 380 | dst[i][1] = (rowA[j][1] + rowA[k][1] + |
||
| 381 | rowB[j][1] + rowB[k][1]) * 0.25F; |
||
| 382 | } |
||
| 383 | } |
||
| 384 | else if (datatype == GL_FLOAT && comps == 1) { |
||
| 385 | GLuint i, j, k; |
||
| 386 | const GLfloat *rowA = (const GLfloat *) srcRowA; |
||
| 387 | const GLfloat *rowB = (const GLfloat *) srcRowB; |
||
| 388 | GLfloat *dst = (GLfloat *) dstRow; |
||
| 389 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 390 | i++, j += colStride, k += colStride) { |
||
| 391 | dst[i] = (rowA[j] + rowA[k] + rowB[j] + rowB[k]) * 0.25F; |
||
| 392 | } |
||
| 393 | } |
||
| 394 | |||
| 395 | else if (datatype == GL_HALF_FLOAT_ARB && comps == 4) { |
||
| 396 | GLuint i, j, k, comp; |
||
| 397 | const GLhalfARB(*rowA)[4] = (const GLhalfARB(*)[4]) srcRowA; |
||
| 398 | const GLhalfARB(*rowB)[4] = (const GLhalfARB(*)[4]) srcRowB; |
||
| 399 | GLhalfARB(*dst)[4] = (GLhalfARB(*)[4]) dstRow; |
||
| 400 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 401 | i++, j += colStride, k += colStride) { |
||
| 402 | for (comp = 0; comp < 4; comp++) { |
||
| 403 | GLfloat aj, ak, bj, bk; |
||
| 404 | aj = _mesa_half_to_float(rowA[j][comp]); |
||
| 405 | ak = _mesa_half_to_float(rowA[k][comp]); |
||
| 406 | bj = _mesa_half_to_float(rowB[j][comp]); |
||
| 407 | bk = _mesa_half_to_float(rowB[k][comp]); |
||
| 408 | dst[i][comp] = _mesa_float_to_half((aj + ak + bj + bk) * 0.25F); |
||
| 409 | } |
||
| 410 | } |
||
| 411 | } |
||
| 412 | else if (datatype == GL_HALF_FLOAT_ARB && comps == 3) { |
||
| 413 | GLuint i, j, k, comp; |
||
| 414 | const GLhalfARB(*rowA)[3] = (const GLhalfARB(*)[3]) srcRowA; |
||
| 415 | const GLhalfARB(*rowB)[3] = (const GLhalfARB(*)[3]) srcRowB; |
||
| 416 | GLhalfARB(*dst)[3] = (GLhalfARB(*)[3]) dstRow; |
||
| 417 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 418 | i++, j += colStride, k += colStride) { |
||
| 419 | for (comp = 0; comp < 3; comp++) { |
||
| 420 | GLfloat aj, ak, bj, bk; |
||
| 421 | aj = _mesa_half_to_float(rowA[j][comp]); |
||
| 422 | ak = _mesa_half_to_float(rowA[k][comp]); |
||
| 423 | bj = _mesa_half_to_float(rowB[j][comp]); |
||
| 424 | bk = _mesa_half_to_float(rowB[k][comp]); |
||
| 425 | dst[i][comp] = _mesa_float_to_half((aj + ak + bj + bk) * 0.25F); |
||
| 426 | } |
||
| 427 | } |
||
| 428 | } |
||
| 429 | else if (datatype == GL_HALF_FLOAT_ARB && comps == 2) { |
||
| 430 | GLuint i, j, k, comp; |
||
| 431 | const GLhalfARB(*rowA)[2] = (const GLhalfARB(*)[2]) srcRowA; |
||
| 432 | const GLhalfARB(*rowB)[2] = (const GLhalfARB(*)[2]) srcRowB; |
||
| 433 | GLhalfARB(*dst)[2] = (GLhalfARB(*)[2]) dstRow; |
||
| 434 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 435 | i++, j += colStride, k += colStride) { |
||
| 436 | for (comp = 0; comp < 2; comp++) { |
||
| 437 | GLfloat aj, ak, bj, bk; |
||
| 438 | aj = _mesa_half_to_float(rowA[j][comp]); |
||
| 439 | ak = _mesa_half_to_float(rowA[k][comp]); |
||
| 440 | bj = _mesa_half_to_float(rowB[j][comp]); |
||
| 441 | bk = _mesa_half_to_float(rowB[k][comp]); |
||
| 442 | dst[i][comp] = _mesa_float_to_half((aj + ak + bj + bk) * 0.25F); |
||
| 443 | } |
||
| 444 | } |
||
| 445 | } |
||
| 446 | else if (datatype == GL_HALF_FLOAT_ARB && comps == 1) { |
||
| 447 | GLuint i, j, k; |
||
| 448 | const GLhalfARB *rowA = (const GLhalfARB *) srcRowA; |
||
| 449 | const GLhalfARB *rowB = (const GLhalfARB *) srcRowB; |
||
| 450 | GLhalfARB *dst = (GLhalfARB *) dstRow; |
||
| 451 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 452 | i++, j += colStride, k += colStride) { |
||
| 453 | GLfloat aj, ak, bj, bk; |
||
| 454 | aj = _mesa_half_to_float(rowA[j]); |
||
| 455 | ak = _mesa_half_to_float(rowA[k]); |
||
| 456 | bj = _mesa_half_to_float(rowB[j]); |
||
| 457 | bk = _mesa_half_to_float(rowB[k]); |
||
| 458 | dst[i] = _mesa_float_to_half((aj + ak + bj + bk) * 0.25F); |
||
| 459 | } |
||
| 460 | } |
||
| 461 | |||
| 462 | else if (datatype == GL_UNSIGNED_INT && comps == 1) { |
||
| 463 | GLuint i, j, k; |
||
| 464 | const GLuint *rowA = (const GLuint *) srcRowA; |
||
| 465 | const GLuint *rowB = (const GLuint *) srcRowB; |
||
| 466 | GLuint *dst = (GLuint *) dstRow; |
||
| 467 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 468 | i++, j += colStride, k += colStride) { |
||
| 469 | dst[i] = (GLfloat)(rowA[j] / 4 + rowA[k] / 4 + rowB[j] / 4 + rowB[k] / 4); |
||
| 470 | } |
||
| 471 | } |
||
| 472 | |||
| 473 | else if (datatype == GL_UNSIGNED_SHORT_5_6_5 && comps == 3) { |
||
| 474 | GLuint i, j, k; |
||
| 475 | const GLushort *rowA = (const GLushort *) srcRowA; |
||
| 476 | const GLushort *rowB = (const GLushort *) srcRowB; |
||
| 477 | GLushort *dst = (GLushort *) dstRow; |
||
| 478 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 479 | i++, j += colStride, k += colStride) { |
||
| 480 | const GLint rowAr0 = rowA[j] & 0x1f; |
||
| 481 | const GLint rowAr1 = rowA[k] & 0x1f; |
||
| 482 | const GLint rowBr0 = rowB[j] & 0x1f; |
||
| 483 | const GLint rowBr1 = rowB[k] & 0x1f; |
||
| 484 | const GLint rowAg0 = (rowA[j] >> 5) & 0x3f; |
||
| 485 | const GLint rowAg1 = (rowA[k] >> 5) & 0x3f; |
||
| 486 | const GLint rowBg0 = (rowB[j] >> 5) & 0x3f; |
||
| 487 | const GLint rowBg1 = (rowB[k] >> 5) & 0x3f; |
||
| 488 | const GLint rowAb0 = (rowA[j] >> 11) & 0x1f; |
||
| 489 | const GLint rowAb1 = (rowA[k] >> 11) & 0x1f; |
||
| 490 | const GLint rowBb0 = (rowB[j] >> 11) & 0x1f; |
||
| 491 | const GLint rowBb1 = (rowB[k] >> 11) & 0x1f; |
||
| 492 | const GLint red = (rowAr0 + rowAr1 + rowBr0 + rowBr1) >> 2; |
||
| 493 | const GLint green = (rowAg0 + rowAg1 + rowBg0 + rowBg1) >> 2; |
||
| 494 | const GLint blue = (rowAb0 + rowAb1 + rowBb0 + rowBb1) >> 2; |
||
| 495 | dst[i] = (blue << 11) | (green << 5) | red; |
||
| 496 | } |
||
| 497 | } |
||
| 498 | else if (datatype == GL_UNSIGNED_SHORT_4_4_4_4 && comps == 4) { |
||
| 499 | GLuint i, j, k; |
||
| 500 | const GLushort *rowA = (const GLushort *) srcRowA; |
||
| 501 | const GLushort *rowB = (const GLushort *) srcRowB; |
||
| 502 | GLushort *dst = (GLushort *) dstRow; |
||
| 503 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 504 | i++, j += colStride, k += colStride) { |
||
| 505 | const GLint rowAr0 = rowA[j] & 0xf; |
||
| 506 | const GLint rowAr1 = rowA[k] & 0xf; |
||
| 507 | const GLint rowBr0 = rowB[j] & 0xf; |
||
| 508 | const GLint rowBr1 = rowB[k] & 0xf; |
||
| 509 | const GLint rowAg0 = (rowA[j] >> 4) & 0xf; |
||
| 510 | const GLint rowAg1 = (rowA[k] >> 4) & 0xf; |
||
| 511 | const GLint rowBg0 = (rowB[j] >> 4) & 0xf; |
||
| 512 | const GLint rowBg1 = (rowB[k] >> 4) & 0xf; |
||
| 513 | const GLint rowAb0 = (rowA[j] >> 8) & 0xf; |
||
| 514 | const GLint rowAb1 = (rowA[k] >> 8) & 0xf; |
||
| 515 | const GLint rowBb0 = (rowB[j] >> 8) & 0xf; |
||
| 516 | const GLint rowBb1 = (rowB[k] >> 8) & 0xf; |
||
| 517 | const GLint rowAa0 = (rowA[j] >> 12) & 0xf; |
||
| 518 | const GLint rowAa1 = (rowA[k] >> 12) & 0xf; |
||
| 519 | const GLint rowBa0 = (rowB[j] >> 12) & 0xf; |
||
| 520 | const GLint rowBa1 = (rowB[k] >> 12) & 0xf; |
||
| 521 | const GLint red = (rowAr0 + rowAr1 + rowBr0 + rowBr1) >> 2; |
||
| 522 | const GLint green = (rowAg0 + rowAg1 + rowBg0 + rowBg1) >> 2; |
||
| 523 | const GLint blue = (rowAb0 + rowAb1 + rowBb0 + rowBb1) >> 2; |
||
| 524 | const GLint alpha = (rowAa0 + rowAa1 + rowBa0 + rowBa1) >> 2; |
||
| 525 | dst[i] = (alpha << 12) | (blue << 8) | (green << 4) | red; |
||
| 526 | } |
||
| 527 | } |
||
| 528 | else if (datatype == GL_UNSIGNED_SHORT_1_5_5_5_REV && comps == 4) { |
||
| 529 | GLuint i, j, k; |
||
| 530 | const GLushort *rowA = (const GLushort *) srcRowA; |
||
| 531 | const GLushort *rowB = (const GLushort *) srcRowB; |
||
| 532 | GLushort *dst = (GLushort *) dstRow; |
||
| 533 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 534 | i++, j += colStride, k += colStride) { |
||
| 535 | const GLint rowAr0 = rowA[j] & 0x1f; |
||
| 536 | const GLint rowAr1 = rowA[k] & 0x1f; |
||
| 537 | const GLint rowBr0 = rowB[j] & 0x1f; |
||
| 538 | const GLint rowBr1 = rowB[k] & 0x1f; |
||
| 539 | const GLint rowAg0 = (rowA[j] >> 5) & 0x1f; |
||
| 540 | const GLint rowAg1 = (rowA[k] >> 5) & 0x1f; |
||
| 541 | const GLint rowBg0 = (rowB[j] >> 5) & 0x1f; |
||
| 542 | const GLint rowBg1 = (rowB[k] >> 5) & 0x1f; |
||
| 543 | const GLint rowAb0 = (rowA[j] >> 10) & 0x1f; |
||
| 544 | const GLint rowAb1 = (rowA[k] >> 10) & 0x1f; |
||
| 545 | const GLint rowBb0 = (rowB[j] >> 10) & 0x1f; |
||
| 546 | const GLint rowBb1 = (rowB[k] >> 10) & 0x1f; |
||
| 547 | const GLint rowAa0 = (rowA[j] >> 15) & 0x1; |
||
| 548 | const GLint rowAa1 = (rowA[k] >> 15) & 0x1; |
||
| 549 | const GLint rowBa0 = (rowB[j] >> 15) & 0x1; |
||
| 550 | const GLint rowBa1 = (rowB[k] >> 15) & 0x1; |
||
| 551 | const GLint red = (rowAr0 + rowAr1 + rowBr0 + rowBr1) >> 2; |
||
| 552 | const GLint green = (rowAg0 + rowAg1 + rowBg0 + rowBg1) >> 2; |
||
| 553 | const GLint blue = (rowAb0 + rowAb1 + rowBb0 + rowBb1) >> 2; |
||
| 554 | const GLint alpha = (rowAa0 + rowAa1 + rowBa0 + rowBa1) >> 2; |
||
| 555 | dst[i] = (alpha << 15) | (blue << 10) | (green << 5) | red; |
||
| 556 | } |
||
| 557 | } |
||
| 558 | else if (datatype == GL_UNSIGNED_SHORT_5_5_5_1 && comps == 4) { |
||
| 559 | GLuint i, j, k; |
||
| 560 | const GLushort *rowA = (const GLushort *) srcRowA; |
||
| 561 | const GLushort *rowB = (const GLushort *) srcRowB; |
||
| 562 | GLushort *dst = (GLushort *) dstRow; |
||
| 563 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 564 | i++, j += colStride, k += colStride) { |
||
| 565 | const GLint rowAr0 = (rowA[j] >> 11) & 0x1f; |
||
| 566 | const GLint rowAr1 = (rowA[k] >> 11) & 0x1f; |
||
| 567 | const GLint rowBr0 = (rowB[j] >> 11) & 0x1f; |
||
| 568 | const GLint rowBr1 = (rowB[k] >> 11) & 0x1f; |
||
| 569 | const GLint rowAg0 = (rowA[j] >> 6) & 0x1f; |
||
| 570 | const GLint rowAg1 = (rowA[k] >> 6) & 0x1f; |
||
| 571 | const GLint rowBg0 = (rowB[j] >> 6) & 0x1f; |
||
| 572 | const GLint rowBg1 = (rowB[k] >> 6) & 0x1f; |
||
| 573 | const GLint rowAb0 = (rowA[j] >> 1) & 0x1f; |
||
| 574 | const GLint rowAb1 = (rowA[k] >> 1) & 0x1f; |
||
| 575 | const GLint rowBb0 = (rowB[j] >> 1) & 0x1f; |
||
| 576 | const GLint rowBb1 = (rowB[k] >> 1) & 0x1f; |
||
| 577 | const GLint rowAa0 = (rowA[j] & 0x1); |
||
| 578 | const GLint rowAa1 = (rowA[k] & 0x1); |
||
| 579 | const GLint rowBa0 = (rowB[j] & 0x1); |
||
| 580 | const GLint rowBa1 = (rowB[k] & 0x1); |
||
| 581 | const GLint red = (rowAr0 + rowAr1 + rowBr0 + rowBr1) >> 2; |
||
| 582 | const GLint green = (rowAg0 + rowAg1 + rowBg0 + rowBg1) >> 2; |
||
| 583 | const GLint blue = (rowAb0 + rowAb1 + rowBb0 + rowBb1) >> 2; |
||
| 584 | const GLint alpha = (rowAa0 + rowAa1 + rowBa0 + rowBa1) >> 2; |
||
| 585 | dst[i] = (red << 11) | (green << 6) | (blue << 1) | alpha; |
||
| 586 | } |
||
| 587 | } |
||
| 588 | |||
| 589 | else if (datatype == GL_UNSIGNED_BYTE_3_3_2 && comps == 3) { |
||
| 590 | GLuint i, j, k; |
||
| 591 | const GLubyte *rowA = (const GLubyte *) srcRowA; |
||
| 592 | const GLubyte *rowB = (const GLubyte *) srcRowB; |
||
| 593 | GLubyte *dst = (GLubyte *) dstRow; |
||
| 594 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 595 | i++, j += colStride, k += colStride) { |
||
| 596 | const GLint rowAr0 = rowA[j] & 0x3; |
||
| 597 | const GLint rowAr1 = rowA[k] & 0x3; |
||
| 598 | const GLint rowBr0 = rowB[j] & 0x3; |
||
| 599 | const GLint rowBr1 = rowB[k] & 0x3; |
||
| 600 | const GLint rowAg0 = (rowA[j] >> 2) & 0x7; |
||
| 601 | const GLint rowAg1 = (rowA[k] >> 2) & 0x7; |
||
| 602 | const GLint rowBg0 = (rowB[j] >> 2) & 0x7; |
||
| 603 | const GLint rowBg1 = (rowB[k] >> 2) & 0x7; |
||
| 604 | const GLint rowAb0 = (rowA[j] >> 5) & 0x7; |
||
| 605 | const GLint rowAb1 = (rowA[k] >> 5) & 0x7; |
||
| 606 | const GLint rowBb0 = (rowB[j] >> 5) & 0x7; |
||
| 607 | const GLint rowBb1 = (rowB[k] >> 5) & 0x7; |
||
| 608 | const GLint red = (rowAr0 + rowAr1 + rowBr0 + rowBr1) >> 2; |
||
| 609 | const GLint green = (rowAg0 + rowAg1 + rowBg0 + rowBg1) >> 2; |
||
| 610 | const GLint blue = (rowAb0 + rowAb1 + rowBb0 + rowBb1) >> 2; |
||
| 611 | dst[i] = (blue << 5) | (green << 2) | red; |
||
| 612 | } |
||
| 613 | } |
||
| 614 | else { |
||
| 615 | _mesa_problem(NULL, "bad format in do_row()"); |
||
| 616 | } |
||
| 617 | } |
||
| 618 | |||
| 619 | |||
| 620 | /** |
||
| 621 | * Average together four rows of a source image to produce a single new |
||
| 622 | * row in the dest image. It's legal for the two source rows to point |
||
| 623 | * to the same data. The source width must be equal to either the |
||
| 624 | * dest width or two times the dest width. |
||
| 625 | * |
||
| 626 | * \param datatype GL pixel type \c GL_UNSIGNED_BYTE, \c GL_UNSIGNED_SHORT, |
||
| 627 | * \c GL_FLOAT, etc. |
||
| 628 | * \param comps number of components per pixel (1..4) |
||
| 629 | * \param srcWidth Width of a row in the source data |
||
| 630 | * \param srcRowA Pointer to one of the rows of source data |
||
| 631 | * \param srcRowB Pointer to one of the rows of source data |
||
| 632 | * \param srcRowC Pointer to one of the rows of source data |
||
| 633 | * \param srcRowD Pointer to one of the rows of source data |
||
| 634 | * \param dstWidth Width of a row in the destination data |
||
| 635 | * \param srcRowA Pointer to the row of destination data |
||
| 636 | */ |
||
| 637 | static void |
||
| 638 | do_row_3D(GLenum datatype, GLuint comps, GLint srcWidth, |
||
| 639 | const GLvoid *srcRowA, const GLvoid *srcRowB, |
||
| 640 | const GLvoid *srcRowC, const GLvoid *srcRowD, |
||
| 641 | GLint dstWidth, GLvoid *dstRow) |
||
| 642 | { |
||
| 643 | const GLuint k0 = (srcWidth == dstWidth) ? 0 : 1; |
||
| 644 | const GLuint colStride = (srcWidth == dstWidth) ? 1 : 2; |
||
| 645 | GLuint i, j, k; |
||
| 646 | |||
| 647 | ASSERT(comps >= 1); |
||
| 648 | ASSERT(comps <= 4); |
||
| 649 | |||
| 650 | if ((datatype == GL_UNSIGNED_BYTE) && (comps == 4)) { |
||
| 651 | DECLARE_ROW_POINTERS(GLubyte, 4); |
||
| 652 | |||
| 653 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 654 | i++, j += colStride, k += colStride) { |
||
| 655 | FILTER_3D(0); |
||
| 656 | FILTER_3D(1); |
||
| 657 | FILTER_3D(2); |
||
| 658 | FILTER_3D(3); |
||
| 659 | } |
||
| 660 | } |
||
| 661 | else if ((datatype == GL_UNSIGNED_BYTE) && (comps == 3)) { |
||
| 662 | DECLARE_ROW_POINTERS(GLubyte, 3); |
||
| 663 | |||
| 664 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 665 | i++, j += colStride, k += colStride) { |
||
| 666 | FILTER_3D(0); |
||
| 667 | FILTER_3D(1); |
||
| 668 | FILTER_3D(2); |
||
| 669 | } |
||
| 670 | } |
||
| 671 | else if ((datatype == GL_UNSIGNED_BYTE) && (comps == 2)) { |
||
| 672 | DECLARE_ROW_POINTERS(GLubyte, 2); |
||
| 673 | |||
| 674 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 675 | i++, j += colStride, k += colStride) { |
||
| 676 | FILTER_3D(0); |
||
| 677 | FILTER_3D(1); |
||
| 678 | } |
||
| 679 | } |
||
| 680 | else if ((datatype == GL_UNSIGNED_BYTE) && (comps == 1)) { |
||
| 681 | DECLARE_ROW_POINTERS(GLubyte, 1); |
||
| 682 | |||
| 683 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 684 | i++, j += colStride, k += colStride) { |
||
| 685 | FILTER_3D(0); |
||
| 686 | } |
||
| 687 | } |
||
| 688 | else if ((datatype == GL_BYTE) && (comps == 4)) { |
||
| 689 | DECLARE_ROW_POINTERS(GLbyte, 4); |
||
| 690 | |||
| 691 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 692 | i++, j += colStride, k += colStride) { |
||
| 693 | FILTER_3D_SIGNED(0); |
||
| 694 | FILTER_3D_SIGNED(1); |
||
| 695 | FILTER_3D_SIGNED(2); |
||
| 696 | FILTER_3D_SIGNED(3); |
||
| 697 | } |
||
| 698 | } |
||
| 699 | else if ((datatype == GL_BYTE) && (comps == 3)) { |
||
| 700 | DECLARE_ROW_POINTERS(GLbyte, 3); |
||
| 701 | |||
| 702 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 703 | i++, j += colStride, k += colStride) { |
||
| 704 | FILTER_3D_SIGNED(0); |
||
| 705 | FILTER_3D_SIGNED(1); |
||
| 706 | FILTER_3D_SIGNED(2); |
||
| 707 | } |
||
| 708 | } |
||
| 709 | else if ((datatype == GL_BYTE) && (comps == 2)) { |
||
| 710 | DECLARE_ROW_POINTERS(GLbyte, 2); |
||
| 711 | |||
| 712 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 713 | i++, j += colStride, k += colStride) { |
||
| 714 | FILTER_3D_SIGNED(0); |
||
| 715 | FILTER_3D_SIGNED(1); |
||
| 716 | } |
||
| 717 | } |
||
| 718 | else if ((datatype == GL_BYTE) && (comps == 1)) { |
||
| 719 | DECLARE_ROW_POINTERS(GLbyte, 1); |
||
| 720 | |||
| 721 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 722 | i++, j += colStride, k += colStride) { |
||
| 723 | FILTER_3D_SIGNED(0); |
||
| 724 | } |
||
| 725 | } |
||
| 726 | else if ((datatype == GL_UNSIGNED_SHORT) && (comps == 4)) { |
||
| 727 | DECLARE_ROW_POINTERS(GLushort, 4); |
||
| 728 | |||
| 729 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 730 | i++, j += colStride, k += colStride) { |
||
| 731 | FILTER_3D(0); |
||
| 732 | FILTER_3D(1); |
||
| 733 | FILTER_3D(2); |
||
| 734 | FILTER_3D(3); |
||
| 735 | } |
||
| 736 | } |
||
| 737 | else if ((datatype == GL_UNSIGNED_SHORT) && (comps == 3)) { |
||
| 738 | DECLARE_ROW_POINTERS(GLushort, 3); |
||
| 739 | |||
| 740 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 741 | i++, j += colStride, k += colStride) { |
||
| 742 | FILTER_3D(0); |
||
| 743 | FILTER_3D(1); |
||
| 744 | FILTER_3D(2); |
||
| 745 | } |
||
| 746 | } |
||
| 747 | else if ((datatype == GL_UNSIGNED_SHORT) && (comps == 2)) { |
||
| 748 | DECLARE_ROW_POINTERS(GLushort, 2); |
||
| 749 | |||
| 750 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 751 | i++, j += colStride, k += colStride) { |
||
| 752 | FILTER_3D(0); |
||
| 753 | FILTER_3D(1); |
||
| 754 | } |
||
| 755 | } |
||
| 756 | else if ((datatype == GL_UNSIGNED_SHORT) && (comps == 1)) { |
||
| 757 | DECLARE_ROW_POINTERS(GLushort, 1); |
||
| 758 | |||
| 759 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 760 | i++, j += colStride, k += colStride) { |
||
| 761 | FILTER_3D(0); |
||
| 762 | } |
||
| 763 | } |
||
| 764 | else if ((datatype == GL_SHORT) && (comps == 4)) { |
||
| 765 | DECLARE_ROW_POINTERS(GLshort, 4); |
||
| 766 | |||
| 767 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 768 | i++, j += colStride, k += colStride) { |
||
| 769 | FILTER_3D(0); |
||
| 770 | FILTER_3D(1); |
||
| 771 | FILTER_3D(2); |
||
| 772 | FILTER_3D(3); |
||
| 773 | } |
||
| 774 | } |
||
| 775 | else if ((datatype == GL_SHORT) && (comps == 3)) { |
||
| 776 | DECLARE_ROW_POINTERS(GLshort, 3); |
||
| 777 | |||
| 778 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 779 | i++, j += colStride, k += colStride) { |
||
| 780 | FILTER_3D(0); |
||
| 781 | FILTER_3D(1); |
||
| 782 | FILTER_3D(2); |
||
| 783 | } |
||
| 784 | } |
||
| 785 | else if ((datatype == GL_SHORT) && (comps == 2)) { |
||
| 786 | DECLARE_ROW_POINTERS(GLshort, 2); |
||
| 787 | |||
| 788 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 789 | i++, j += colStride, k += colStride) { |
||
| 790 | FILTER_3D(0); |
||
| 791 | FILTER_3D(1); |
||
| 792 | } |
||
| 793 | } |
||
| 794 | else if ((datatype == GL_SHORT) && (comps == 1)) { |
||
| 795 | DECLARE_ROW_POINTERS(GLshort, 1); |
||
| 796 | |||
| 797 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 798 | i++, j += colStride, k += colStride) { |
||
| 799 | FILTER_3D(0); |
||
| 800 | } |
||
| 801 | } |
||
| 802 | else if ((datatype == GL_FLOAT) && (comps == 4)) { |
||
| 803 | DECLARE_ROW_POINTERS(GLfloat, 4); |
||
| 804 | |||
| 805 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 806 | i++, j += colStride, k += colStride) { |
||
| 807 | FILTER_F_3D(0); |
||
| 808 | FILTER_F_3D(1); |
||
| 809 | FILTER_F_3D(2); |
||
| 810 | FILTER_F_3D(3); |
||
| 811 | } |
||
| 812 | } |
||
| 813 | else if ((datatype == GL_FLOAT) && (comps == 3)) { |
||
| 814 | DECLARE_ROW_POINTERS(GLfloat, 3); |
||
| 815 | |||
| 816 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 817 | i++, j += colStride, k += colStride) { |
||
| 818 | FILTER_F_3D(0); |
||
| 819 | FILTER_F_3D(1); |
||
| 820 | FILTER_F_3D(2); |
||
| 821 | } |
||
| 822 | } |
||
| 823 | else if ((datatype == GL_FLOAT) && (comps == 2)) { |
||
| 824 | DECLARE_ROW_POINTERS(GLfloat, 2); |
||
| 825 | |||
| 826 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 827 | i++, j += colStride, k += colStride) { |
||
| 828 | FILTER_F_3D(0); |
||
| 829 | FILTER_F_3D(1); |
||
| 830 | } |
||
| 831 | } |
||
| 832 | else if ((datatype == GL_FLOAT) && (comps == 1)) { |
||
| 833 | DECLARE_ROW_POINTERS(GLfloat, 1); |
||
| 834 | |||
| 835 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 836 | i++, j += colStride, k += colStride) { |
||
| 837 | FILTER_F_3D(0); |
||
| 838 | } |
||
| 839 | } |
||
| 840 | else if ((datatype == GL_HALF_FLOAT_ARB) && (comps == 4)) { |
||
| 841 | DECLARE_ROW_POINTERS(GLhalfARB, 4); |
||
| 842 | |||
| 843 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 844 | i++, j += colStride, k += colStride) { |
||
| 845 | FILTER_HF_3D(0); |
||
| 846 | FILTER_HF_3D(1); |
||
| 847 | FILTER_HF_3D(2); |
||
| 848 | FILTER_HF_3D(3); |
||
| 849 | } |
||
| 850 | } |
||
| 851 | else if ((datatype == GL_HALF_FLOAT_ARB) && (comps == 3)) { |
||
| 852 | DECLARE_ROW_POINTERS(GLhalfARB, 4); |
||
| 853 | |||
| 854 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 855 | i++, j += colStride, k += colStride) { |
||
| 856 | FILTER_HF_3D(0); |
||
| 857 | FILTER_HF_3D(1); |
||
| 858 | FILTER_HF_3D(2); |
||
| 859 | } |
||
| 860 | } |
||
| 861 | else if ((datatype == GL_HALF_FLOAT_ARB) && (comps == 2)) { |
||
| 862 | DECLARE_ROW_POINTERS(GLhalfARB, 4); |
||
| 863 | |||
| 864 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 865 | i++, j += colStride, k += colStride) { |
||
| 866 | FILTER_HF_3D(0); |
||
| 867 | FILTER_HF_3D(1); |
||
| 868 | } |
||
| 869 | } |
||
| 870 | else if ((datatype == GL_HALF_FLOAT_ARB) && (comps == 1)) { |
||
| 871 | DECLARE_ROW_POINTERS(GLhalfARB, 4); |
||
| 872 | |||
| 873 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 874 | i++, j += colStride, k += colStride) { |
||
| 875 | FILTER_HF_3D(0); |
||
| 876 | } |
||
| 877 | } |
||
| 878 | else if ((datatype == GL_UNSIGNED_INT) && (comps == 1)) { |
||
| 879 | const GLuint *rowA = (const GLuint *) srcRowA; |
||
| 880 | const GLuint *rowB = (const GLuint *) srcRowB; |
||
| 881 | const GLuint *rowC = (const GLuint *) srcRowC; |
||
| 882 | const GLuint *rowD = (const GLuint *) srcRowD; |
||
| 883 | GLfloat *dst = (GLfloat *) dstRow; |
||
| 884 | |||
| 885 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 886 | i++, j += colStride, k += colStride) { |
||
| 887 | const uint64_t tmp = (((uint64_t) rowA[j] + (uint64_t) rowA[k]) |
||
| 888 | + ((uint64_t) rowB[j] + (uint64_t) rowB[k]) |
||
| 889 | + ((uint64_t) rowC[j] + (uint64_t) rowC[k]) |
||
| 890 | + ((uint64_t) rowD[j] + (uint64_t) rowD[k])); |
||
| 891 | dst[i] = (GLfloat)((double) tmp * 0.125); |
||
| 892 | } |
||
| 893 | } |
||
| 894 | else if ((datatype == GL_UNSIGNED_SHORT_5_6_5) && (comps == 3)) { |
||
| 895 | DECLARE_ROW_POINTERS0(GLushort); |
||
| 896 | |||
| 897 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 898 | i++, j += colStride, k += colStride) { |
||
| 899 | const GLint rowAr0 = rowA[j] & 0x1f; |
||
| 900 | const GLint rowAr1 = rowA[k] & 0x1f; |
||
| 901 | const GLint rowBr0 = rowB[j] & 0x1f; |
||
| 902 | const GLint rowBr1 = rowB[k] & 0x1f; |
||
| 903 | const GLint rowCr0 = rowC[j] & 0x1f; |
||
| 904 | const GLint rowCr1 = rowC[k] & 0x1f; |
||
| 905 | const GLint rowDr0 = rowD[j] & 0x1f; |
||
| 906 | const GLint rowDr1 = rowD[k] & 0x1f; |
||
| 907 | const GLint rowAg0 = (rowA[j] >> 5) & 0x3f; |
||
| 908 | const GLint rowAg1 = (rowA[k] >> 5) & 0x3f; |
||
| 909 | const GLint rowBg0 = (rowB[j] >> 5) & 0x3f; |
||
| 910 | const GLint rowBg1 = (rowB[k] >> 5) & 0x3f; |
||
| 911 | const GLint rowCg0 = (rowC[j] >> 5) & 0x3f; |
||
| 912 | const GLint rowCg1 = (rowC[k] >> 5) & 0x3f; |
||
| 913 | const GLint rowDg0 = (rowD[j] >> 5) & 0x3f; |
||
| 914 | const GLint rowDg1 = (rowD[k] >> 5) & 0x3f; |
||
| 915 | const GLint rowAb0 = (rowA[j] >> 11) & 0x1f; |
||
| 916 | const GLint rowAb1 = (rowA[k] >> 11) & 0x1f; |
||
| 917 | const GLint rowBb0 = (rowB[j] >> 11) & 0x1f; |
||
| 918 | const GLint rowBb1 = (rowB[k] >> 11) & 0x1f; |
||
| 919 | const GLint rowCb0 = (rowC[j] >> 11) & 0x1f; |
||
| 920 | const GLint rowCb1 = (rowC[k] >> 11) & 0x1f; |
||
| 921 | const GLint rowDb0 = (rowD[j] >> 11) & 0x1f; |
||
| 922 | const GLint rowDb1 = (rowD[k] >> 11) & 0x1f; |
||
| 923 | const GLint r = FILTER_SUM_3D(rowAr0, rowAr1, rowBr0, rowBr1, |
||
| 924 | rowCr0, rowCr1, rowDr0, rowDr1); |
||
| 925 | const GLint g = FILTER_SUM_3D(rowAg0, rowAg1, rowBg0, rowBg1, |
||
| 926 | rowCg0, rowCg1, rowDg0, rowDg1); |
||
| 927 | const GLint b = FILTER_SUM_3D(rowAb0, rowAb1, rowBb0, rowBb1, |
||
| 928 | rowCb0, rowCb1, rowDb0, rowDb1); |
||
| 929 | dst[i] = (b << 11) | (g << 5) | r; |
||
| 930 | } |
||
| 931 | } |
||
| 932 | else if ((datatype == GL_UNSIGNED_SHORT_4_4_4_4) && (comps == 4)) { |
||
| 933 | DECLARE_ROW_POINTERS0(GLushort); |
||
| 934 | |||
| 935 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 936 | i++, j += colStride, k += colStride) { |
||
| 937 | const GLint rowAr0 = rowA[j] & 0xf; |
||
| 938 | const GLint rowAr1 = rowA[k] & 0xf; |
||
| 939 | const GLint rowBr0 = rowB[j] & 0xf; |
||
| 940 | const GLint rowBr1 = rowB[k] & 0xf; |
||
| 941 | const GLint rowCr0 = rowC[j] & 0xf; |
||
| 942 | const GLint rowCr1 = rowC[k] & 0xf; |
||
| 943 | const GLint rowDr0 = rowD[j] & 0xf; |
||
| 944 | const GLint rowDr1 = rowD[k] & 0xf; |
||
| 945 | const GLint rowAg0 = (rowA[j] >> 4) & 0xf; |
||
| 946 | const GLint rowAg1 = (rowA[k] >> 4) & 0xf; |
||
| 947 | const GLint rowBg0 = (rowB[j] >> 4) & 0xf; |
||
| 948 | const GLint rowBg1 = (rowB[k] >> 4) & 0xf; |
||
| 949 | const GLint rowCg0 = (rowC[j] >> 4) & 0xf; |
||
| 950 | const GLint rowCg1 = (rowC[k] >> 4) & 0xf; |
||
| 951 | const GLint rowDg0 = (rowD[j] >> 4) & 0xf; |
||
| 952 | const GLint rowDg1 = (rowD[k] >> 4) & 0xf; |
||
| 953 | const GLint rowAb0 = (rowA[j] >> 8) & 0xf; |
||
| 954 | const GLint rowAb1 = (rowA[k] >> 8) & 0xf; |
||
| 955 | const GLint rowBb0 = (rowB[j] >> 8) & 0xf; |
||
| 956 | const GLint rowBb1 = (rowB[k] >> 8) & 0xf; |
||
| 957 | const GLint rowCb0 = (rowC[j] >> 8) & 0xf; |
||
| 958 | const GLint rowCb1 = (rowC[k] >> 8) & 0xf; |
||
| 959 | const GLint rowDb0 = (rowD[j] >> 8) & 0xf; |
||
| 960 | const GLint rowDb1 = (rowD[k] >> 8) & 0xf; |
||
| 961 | const GLint rowAa0 = (rowA[j] >> 12) & 0xf; |
||
| 962 | const GLint rowAa1 = (rowA[k] >> 12) & 0xf; |
||
| 963 | const GLint rowBa0 = (rowB[j] >> 12) & 0xf; |
||
| 964 | const GLint rowBa1 = (rowB[k] >> 12) & 0xf; |
||
| 965 | const GLint rowCa0 = (rowC[j] >> 12) & 0xf; |
||
| 966 | const GLint rowCa1 = (rowC[k] >> 12) & 0xf; |
||
| 967 | const GLint rowDa0 = (rowD[j] >> 12) & 0xf; |
||
| 968 | const GLint rowDa1 = (rowD[k] >> 12) & 0xf; |
||
| 969 | const GLint r = FILTER_SUM_3D(rowAr0, rowAr1, rowBr0, rowBr1, |
||
| 970 | rowCr0, rowCr1, rowDr0, rowDr1); |
||
| 971 | const GLint g = FILTER_SUM_3D(rowAg0, rowAg1, rowBg0, rowBg1, |
||
| 972 | rowCg0, rowCg1, rowDg0, rowDg1); |
||
| 973 | const GLint b = FILTER_SUM_3D(rowAb0, rowAb1, rowBb0, rowBb1, |
||
| 974 | rowCb0, rowCb1, rowDb0, rowDb1); |
||
| 975 | const GLint a = FILTER_SUM_3D(rowAa0, rowAa1, rowBa0, rowBa1, |
||
| 976 | rowCa0, rowCa1, rowDa0, rowDa1); |
||
| 977 | |||
| 978 | dst[i] = (a << 12) | (b << 8) | (g << 4) | r; |
||
| 979 | } |
||
| 980 | } |
||
| 981 | else if ((datatype == GL_UNSIGNED_SHORT_1_5_5_5_REV) && (comps == 4)) { |
||
| 982 | DECLARE_ROW_POINTERS0(GLushort); |
||
| 983 | |||
| 984 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 985 | i++, j += colStride, k += colStride) { |
||
| 986 | const GLint rowAr0 = rowA[j] & 0x1f; |
||
| 987 | const GLint rowAr1 = rowA[k] & 0x1f; |
||
| 988 | const GLint rowBr0 = rowB[j] & 0x1f; |
||
| 989 | const GLint rowBr1 = rowB[k] & 0x1f; |
||
| 990 | const GLint rowCr0 = rowC[j] & 0x1f; |
||
| 991 | const GLint rowCr1 = rowC[k] & 0x1f; |
||
| 992 | const GLint rowDr0 = rowD[j] & 0x1f; |
||
| 993 | const GLint rowDr1 = rowD[k] & 0x1f; |
||
| 994 | const GLint rowAg0 = (rowA[j] >> 5) & 0x1f; |
||
| 995 | const GLint rowAg1 = (rowA[k] >> 5) & 0x1f; |
||
| 996 | const GLint rowBg0 = (rowB[j] >> 5) & 0x1f; |
||
| 997 | const GLint rowBg1 = (rowB[k] >> 5) & 0x1f; |
||
| 998 | const GLint rowCg0 = (rowC[j] >> 5) & 0x1f; |
||
| 999 | const GLint rowCg1 = (rowC[k] >> 5) & 0x1f; |
||
| 1000 | const GLint rowDg0 = (rowD[j] >> 5) & 0x1f; |
||
| 1001 | const GLint rowDg1 = (rowD[k] >> 5) & 0x1f; |
||
| 1002 | const GLint rowAb0 = (rowA[j] >> 10) & 0x1f; |
||
| 1003 | const GLint rowAb1 = (rowA[k] >> 10) & 0x1f; |
||
| 1004 | const GLint rowBb0 = (rowB[j] >> 10) & 0x1f; |
||
| 1005 | const GLint rowBb1 = (rowB[k] >> 10) & 0x1f; |
||
| 1006 | const GLint rowCb0 = (rowC[j] >> 10) & 0x1f; |
||
| 1007 | const GLint rowCb1 = (rowC[k] >> 10) & 0x1f; |
||
| 1008 | const GLint rowDb0 = (rowD[j] >> 10) & 0x1f; |
||
| 1009 | const GLint rowDb1 = (rowD[k] >> 10) & 0x1f; |
||
| 1010 | const GLint rowAa0 = (rowA[j] >> 15) & 0x1; |
||
| 1011 | const GLint rowAa1 = (rowA[k] >> 15) & 0x1; |
||
| 1012 | const GLint rowBa0 = (rowB[j] >> 15) & 0x1; |
||
| 1013 | const GLint rowBa1 = (rowB[k] >> 15) & 0x1; |
||
| 1014 | const GLint rowCa0 = (rowC[j] >> 15) & 0x1; |
||
| 1015 | const GLint rowCa1 = (rowC[k] >> 15) & 0x1; |
||
| 1016 | const GLint rowDa0 = (rowD[j] >> 15) & 0x1; |
||
| 1017 | const GLint rowDa1 = (rowD[k] >> 15) & 0x1; |
||
| 1018 | const GLint r = FILTER_SUM_3D(rowAr0, rowAr1, rowBr0, rowBr1, |
||
| 1019 | rowCr0, rowCr1, rowDr0, rowDr1); |
||
| 1020 | const GLint g = FILTER_SUM_3D(rowAg0, rowAg1, rowBg0, rowBg1, |
||
| 1021 | rowCg0, rowCg1, rowDg0, rowDg1); |
||
| 1022 | const GLint b = FILTER_SUM_3D(rowAb0, rowAb1, rowBb0, rowBb1, |
||
| 1023 | rowCb0, rowCb1, rowDb0, rowDb1); |
||
| 1024 | const GLint a = FILTER_SUM_3D(rowAa0, rowAa1, rowBa0, rowBa1, |
||
| 1025 | rowCa0, rowCa1, rowDa0, rowDa1); |
||
| 1026 | |||
| 1027 | dst[i] = (a << 15) | (b << 10) | (g << 5) | r; |
||
| 1028 | } |
||
| 1029 | } |
||
| 1030 | else if ((datatype == GL_UNSIGNED_SHORT_5_5_5_1) && (comps == 4)) { |
||
| 1031 | DECLARE_ROW_POINTERS0(GLushort); |
||
| 1032 | |||
| 1033 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 1034 | i++, j += colStride, k += colStride) { |
||
| 1035 | const GLint rowAr0 = (rowA[j] >> 11) & 0x1f; |
||
| 1036 | const GLint rowAr1 = (rowA[k] >> 11) & 0x1f; |
||
| 1037 | const GLint rowBr0 = (rowB[j] >> 11) & 0x1f; |
||
| 1038 | const GLint rowBr1 = (rowB[k] >> 11) & 0x1f; |
||
| 1039 | const GLint rowCr0 = (rowC[j] >> 11) & 0x1f; |
||
| 1040 | const GLint rowCr1 = (rowC[k] >> 11) & 0x1f; |
||
| 1041 | const GLint rowDr0 = (rowD[j] >> 11) & 0x1f; |
||
| 1042 | const GLint rowDr1 = (rowD[k] >> 11) & 0x1f; |
||
| 1043 | const GLint rowAg0 = (rowA[j] >> 6) & 0x1f; |
||
| 1044 | const GLint rowAg1 = (rowA[k] >> 6) & 0x1f; |
||
| 1045 | const GLint rowBg0 = (rowB[j] >> 6) & 0x1f; |
||
| 1046 | const GLint rowBg1 = (rowB[k] >> 6) & 0x1f; |
||
| 1047 | const GLint rowCg0 = (rowC[j] >> 6) & 0x1f; |
||
| 1048 | const GLint rowCg1 = (rowC[k] >> 6) & 0x1f; |
||
| 1049 | const GLint rowDg0 = (rowD[j] >> 6) & 0x1f; |
||
| 1050 | const GLint rowDg1 = (rowD[k] >> 6) & 0x1f; |
||
| 1051 | const GLint rowAb0 = (rowA[j] >> 1) & 0x1f; |
||
| 1052 | const GLint rowAb1 = (rowA[k] >> 1) & 0x1f; |
||
| 1053 | const GLint rowBb0 = (rowB[j] >> 1) & 0x1f; |
||
| 1054 | const GLint rowBb1 = (rowB[k] >> 1) & 0x1f; |
||
| 1055 | const GLint rowCb0 = (rowC[j] >> 1) & 0x1f; |
||
| 1056 | const GLint rowCb1 = (rowC[k] >> 1) & 0x1f; |
||
| 1057 | const GLint rowDb0 = (rowD[j] >> 1) & 0x1f; |
||
| 1058 | const GLint rowDb1 = (rowD[k] >> 1) & 0x1f; |
||
| 1059 | const GLint rowAa0 = (rowA[j] & 0x1); |
||
| 1060 | const GLint rowAa1 = (rowA[k] & 0x1); |
||
| 1061 | const GLint rowBa0 = (rowB[j] & 0x1); |
||
| 1062 | const GLint rowBa1 = (rowB[k] & 0x1); |
||
| 1063 | const GLint rowCa0 = (rowC[j] & 0x1); |
||
| 1064 | const GLint rowCa1 = (rowC[k] & 0x1); |
||
| 1065 | const GLint rowDa0 = (rowD[j] & 0x1); |
||
| 1066 | const GLint rowDa1 = (rowD[k] & 0x1); |
||
| 1067 | const GLint r = FILTER_SUM_3D(rowAr0, rowAr1, rowBr0, rowBr1, |
||
| 1068 | rowCr0, rowCr1, rowDr0, rowDr1); |
||
| 1069 | const GLint g = FILTER_SUM_3D(rowAg0, rowAg1, rowBg0, rowBg1, |
||
| 1070 | rowCg0, rowCg1, rowDg0, rowDg1); |
||
| 1071 | const GLint b = FILTER_SUM_3D(rowAb0, rowAb1, rowBb0, rowBb1, |
||
| 1072 | rowCb0, rowCb1, rowDb0, rowDb1); |
||
| 1073 | const GLint a = FILTER_SUM_3D(rowAa0, rowAa1, rowBa0, rowBa1, |
||
| 1074 | rowCa0, rowCa1, rowDa0, rowDa1); |
||
| 1075 | |||
| 1076 | dst[i] = (r << 11) | (g << 6) | (b << 1) | a; |
||
| 1077 | } |
||
| 1078 | } |
||
| 1079 | else if ((datatype == GL_UNSIGNED_BYTE_3_3_2) && (comps == 3)) { |
||
| 1080 | DECLARE_ROW_POINTERS0(GLubyte); |
||
| 1081 | |||
| 1082 | for (i = j = 0, k = k0; i < (GLuint) dstWidth; |
||
| 1083 | i++, j += colStride, k += colStride) { |
||
| 1084 | const GLint rowAr0 = rowA[j] & 0x3; |
||
| 1085 | const GLint rowAr1 = rowA[k] & 0x3; |
||
| 1086 | const GLint rowBr0 = rowB[j] & 0x3; |
||
| 1087 | const GLint rowBr1 = rowB[k] & 0x3; |
||
| 1088 | const GLint rowCr0 = rowC[j] & 0x3; |
||
| 1089 | const GLint rowCr1 = rowC[k] & 0x3; |
||
| 1090 | const GLint rowDr0 = rowD[j] & 0x3; |
||
| 1091 | const GLint rowDr1 = rowD[k] & 0x3; |
||
| 1092 | const GLint rowAg0 = (rowA[j] >> 2) & 0x7; |
||
| 1093 | const GLint rowAg1 = (rowA[k] >> 2) & 0x7; |
||
| 1094 | const GLint rowBg0 = (rowB[j] >> 2) & 0x7; |
||
| 1095 | const GLint rowBg1 = (rowB[k] >> 2) & 0x7; |
||
| 1096 | const GLint rowCg0 = (rowC[j] >> 2) & 0x7; |
||
| 1097 | const GLint rowCg1 = (rowC[k] >> 2) & 0x7; |
||
| 1098 | const GLint rowDg0 = (rowD[j] >> 2) & 0x7; |
||
| 1099 | const GLint rowDg1 = (rowD[k] >> 2) & 0x7; |
||
| 1100 | const GLint rowAb0 = (rowA[j] >> 5) & 0x7; |
||
| 1101 | const GLint rowAb1 = (rowA[k] >> 5) & 0x7; |
||
| 1102 | const GLint rowBb0 = (rowB[j] >> 5) & 0x7; |
||
| 1103 | const GLint rowBb1 = (rowB[k] >> 5) & 0x7; |
||
| 1104 | const GLint rowCb0 = (rowC[j] >> 5) & 0x7; |
||
| 1105 | const GLint rowCb1 = (rowC[k] >> 5) & 0x7; |
||
| 1106 | const GLint rowDb0 = (rowD[j] >> 5) & 0x7; |
||
| 1107 | const GLint rowDb1 = (rowD[k] >> 5) & 0x7; |
||
| 1108 | const GLint r = FILTER_SUM_3D(rowAr0, rowAr1, rowBr0, rowBr1, |
||
| 1109 | rowCr0, rowCr1, rowDr0, rowDr1); |
||
| 1110 | const GLint g = FILTER_SUM_3D(rowAg0, rowAg1, rowBg0, rowBg1, |
||
| 1111 | rowCg0, rowCg1, rowDg0, rowDg1); |
||
| 1112 | const GLint b = FILTER_SUM_3D(rowAb0, rowAb1, rowBb0, rowBb1, |
||
| 1113 | rowCb0, rowCb1, rowDb0, rowDb1); |
||
| 1114 | dst[i] = (b << 5) | (g << 2) | r; |
||
| 1115 | } |
||
| 1116 | } |
||
| 1117 | else { |
||
| 1118 | _mesa_problem(NULL, "bad format in do_row()"); |
||
| 1119 | } |
||
| 1120 | } |
||
| 1121 | |||
| 1122 | |||
| 1123 | /* |
||
| 1124 | * These functions generate a 1/2-size mipmap image from a source image. |
||
| 1125 | * Texture borders are handled by copying or averaging the source image's |
||
| 1126 | * border texels, depending on the scale-down factor. |
||
| 1127 | */ |
||
| 1128 | |||
| 1129 | static void |
||
| 1130 | make_1d_mipmap(GLenum datatype, GLuint comps, GLint border, |
||
| 1131 | GLint srcWidth, const GLubyte *srcPtr, |
||
| 1132 | GLint dstWidth, GLubyte *dstPtr) |
||
| 1133 | { |
||
| 1134 | const GLint bpt = bytes_per_pixel(datatype, comps); |
||
| 1135 | const GLubyte *src; |
||
| 1136 | GLubyte *dst; |
||
| 1137 | |||
| 1138 | /* skip the border pixel, if any */ |
||
| 1139 | src = srcPtr + border * bpt; |
||
| 1140 | dst = dstPtr + border * bpt; |
||
| 1141 | |||
| 1142 | /* we just duplicate the input row, kind of hack, saves code */ |
||
| 1143 | do_row(datatype, comps, srcWidth - 2 * border, src, src, |
||
| 1144 | dstWidth - 2 * border, dst); |
||
| 1145 | |||
| 1146 | if (border) { |
||
| 1147 | /* copy left-most pixel from source */ |
||
| 1148 | assert(dstPtr); |
||
| 1149 | assert(srcPtr); |
||
| 1150 | memcpy(dstPtr, srcPtr, bpt); |
||
| 1151 | /* copy right-most pixel from source */ |
||
| 1152 | memcpy(dstPtr + (dstWidth - 1) * bpt, |
||
| 1153 | srcPtr + (srcWidth - 1) * bpt, |
||
| 1154 | bpt); |
||
| 1155 | } |
||
| 1156 | } |
||
| 1157 | |||
| 1158 | |||
| 1159 | static void |
||
| 1160 | make_2d_mipmap(GLenum datatype, GLuint comps, GLint border, |
||
| 1161 | GLint srcWidth, GLint srcHeight, |
||
| 1162 | const GLubyte *srcPtr, GLint srcRowStride, |
||
| 1163 | GLint dstWidth, GLint dstHeight, |
||
| 1164 | GLubyte *dstPtr, GLint dstRowStride) |
||
| 1165 | { |
||
| 1166 | const GLint bpt = bytes_per_pixel(datatype, comps); |
||
| 1167 | const GLint srcWidthNB = srcWidth - 2 * border; /* sizes w/out border */ |
||
| 1168 | const GLint dstWidthNB = dstWidth - 2 * border; |
||
| 1169 | const GLint dstHeightNB = dstHeight - 2 * border; |
||
| 1170 | const GLint srcRowBytes = bpt * srcRowStride; |
||
| 1171 | const GLint dstRowBytes = bpt * dstRowStride; |
||
| 1172 | const GLubyte *srcA, *srcB; |
||
| 1173 | GLubyte *dst; |
||
| 1174 | GLint row, srcRowStep; |
||
| 1175 | |||
| 1176 | /* Compute src and dst pointers, skipping any border */ |
||
| 1177 | srcA = srcPtr + border * ((srcWidth + 1) * bpt); |
||
| 1178 | if (srcHeight > 1 && srcHeight > dstHeight) { |
||
| 1179 | /* sample from two source rows */ |
||
| 1180 | srcB = srcA + srcRowBytes; |
||
| 1181 | srcRowStep = 2; |
||
| 1182 | } |
||
| 1183 | else { |
||
| 1184 | /* sample from one source row */ |
||
| 1185 | srcB = srcA; |
||
| 1186 | srcRowStep = 1; |
||
| 1187 | } |
||
| 1188 | |||
| 1189 | dst = dstPtr + border * ((dstWidth + 1) * bpt); |
||
| 1190 | |||
| 1191 | for (row = 0; row < dstHeightNB; row++) { |
||
| 1192 | do_row(datatype, comps, srcWidthNB, srcA, srcB, |
||
| 1193 | dstWidthNB, dst); |
||
| 1194 | srcA += srcRowStep * srcRowBytes; |
||
| 1195 | srcB += srcRowStep * srcRowBytes; |
||
| 1196 | dst += dstRowBytes; |
||
| 1197 | } |
||
| 1198 | |||
| 1199 | /* This is ugly but probably won't be used much */ |
||
| 1200 | if (border > 0) { |
||
| 1201 | /* fill in dest border */ |
||
| 1202 | /* lower-left border pixel */ |
||
| 1203 | assert(dstPtr); |
||
| 1204 | assert(srcPtr); |
||
| 1205 | memcpy(dstPtr, srcPtr, bpt); |
||
| 1206 | /* lower-right border pixel */ |
||
| 1207 | memcpy(dstPtr + (dstWidth - 1) * bpt, |
||
| 1208 | srcPtr + (srcWidth - 1) * bpt, bpt); |
||
| 1209 | /* upper-left border pixel */ |
||
| 1210 | memcpy(dstPtr + dstWidth * (dstHeight - 1) * bpt, |
||
| 1211 | srcPtr + srcWidth * (srcHeight - 1) * bpt, bpt); |
||
| 1212 | /* upper-right border pixel */ |
||
| 1213 | memcpy(dstPtr + (dstWidth * dstHeight - 1) * bpt, |
||
| 1214 | srcPtr + (srcWidth * srcHeight - 1) * bpt, bpt); |
||
| 1215 | /* lower border */ |
||
| 1216 | do_row(datatype, comps, srcWidthNB, |
||
| 1217 | srcPtr + bpt, |
||
| 1218 | srcPtr + bpt, |
||
| 1219 | dstWidthNB, dstPtr + bpt); |
||
| 1220 | /* upper border */ |
||
| 1221 | do_row(datatype, comps, srcWidthNB, |
||
| 1222 | srcPtr + (srcWidth * (srcHeight - 1) + 1) * bpt, |
||
| 1223 | srcPtr + (srcWidth * (srcHeight - 1) + 1) * bpt, |
||
| 1224 | dstWidthNB, |
||
| 1225 | dstPtr + (dstWidth * (dstHeight - 1) + 1) * bpt); |
||
| 1226 | /* left and right borders */ |
||
| 1227 | if (srcHeight == dstHeight) { |
||
| 1228 | /* copy border pixel from src to dst */ |
||
| 1229 | for (row = 1; row < srcHeight; row++) { |
||
| 1230 | memcpy(dstPtr + dstWidth * row * bpt, |
||
| 1231 | srcPtr + srcWidth * row * bpt, bpt); |
||
| 1232 | memcpy(dstPtr + (dstWidth * row + dstWidth - 1) * bpt, |
||
| 1233 | srcPtr + (srcWidth * row + srcWidth - 1) * bpt, bpt); |
||
| 1234 | } |
||
| 1235 | } |
||
| 1236 | else { |
||
| 1237 | /* average two src pixels each dest pixel */ |
||
| 1238 | for (row = 0; row < dstHeightNB; row += 2) { |
||
| 1239 | do_row(datatype, comps, 1, |
||
| 1240 | srcPtr + (srcWidth * (row * 2 + 1)) * bpt, |
||
| 1241 | srcPtr + (srcWidth * (row * 2 + 2)) * bpt, |
||
| 1242 | 1, dstPtr + (dstWidth * row + 1) * bpt); |
||
| 1243 | do_row(datatype, comps, 1, |
||
| 1244 | srcPtr + (srcWidth * (row * 2 + 1) + srcWidth - 1) * bpt, |
||
| 1245 | srcPtr + (srcWidth * (row * 2 + 2) + srcWidth - 1) * bpt, |
||
| 1246 | 1, dstPtr + (dstWidth * row + 1 + dstWidth - 1) * bpt); |
||
| 1247 | } |
||
| 1248 | } |
||
| 1249 | } |
||
| 1250 | } |
||
| 1251 | |||
| 1252 | |||
| 1253 | static void |
||
| 1254 | make_3d_mipmap(GLenum datatype, GLuint comps, GLint border, |
||
| 1255 | GLint srcWidth, GLint srcHeight, GLint srcDepth, |
||
| 1256 | const GLubyte *srcPtr, GLint srcRowStride, |
||
| 1257 | GLint dstWidth, GLint dstHeight, GLint dstDepth, |
||
| 1258 | GLubyte *dstPtr, GLint dstRowStride) |
||
| 1259 | { |
||
| 1260 | const GLint bpt = bytes_per_pixel(datatype, comps); |
||
| 1261 | const GLint srcWidthNB = srcWidth - 2 * border; /* sizes w/out border */ |
||
| 1262 | const GLint srcDepthNB = srcDepth - 2 * border; |
||
| 1263 | const GLint dstWidthNB = dstWidth - 2 * border; |
||
| 1264 | const GLint dstHeightNB = dstHeight - 2 * border; |
||
| 1265 | const GLint dstDepthNB = dstDepth - 2 * border; |
||
| 1266 | GLint img, row; |
||
| 1267 | GLint bytesPerSrcImage, bytesPerDstImage; |
||
| 1268 | GLint bytesPerSrcRow, bytesPerDstRow; |
||
| 1269 | GLint srcImageOffset, srcRowOffset; |
||
| 1270 | |||
| 1271 | (void) srcDepthNB; /* silence warnings */ |
||
| 1272 | |||
| 1273 | |||
| 1274 | bytesPerSrcImage = srcWidth * srcHeight * bpt; |
||
| 1275 | bytesPerDstImage = dstWidth * dstHeight * bpt; |
||
| 1276 | |||
| 1277 | bytesPerSrcRow = srcWidth * bpt; |
||
| 1278 | bytesPerDstRow = dstWidth * bpt; |
||
| 1279 | |||
| 1280 | /* Offset between adjacent src images to be averaged together */ |
||
| 1281 | srcImageOffset = (srcDepth == dstDepth) ? 0 : bytesPerSrcImage; |
||
| 1282 | |||
| 1283 | /* Offset between adjacent src rows to be averaged together */ |
||
| 1284 | srcRowOffset = (srcHeight == dstHeight) ? 0 : srcWidth * bpt; |
||
| 1285 | |||
| 1286 | /* |
||
| 1287 | * Need to average together up to 8 src pixels for each dest pixel. |
||
| 1288 | * Break that down into 3 operations: |
||
| 1289 | * 1. take two rows from source image and average them together. |
||
| 1290 | * 2. take two rows from next source image and average them together. |
||
| 1291 | * 3. take the two averaged rows and average them for the final dst row. |
||
| 1292 | */ |
||
| 1293 | |||
| 1294 | /* |
||
| 1295 | printf("mip3d %d x %d x %d -> %d x %d x %d\n", |
||
| 1296 | srcWidth, srcHeight, srcDepth, dstWidth, dstHeight, dstDepth); |
||
| 1297 | */ |
||
| 1298 | |||
| 1299 | for (img = 0; img < dstDepthNB; img++) { |
||
| 1300 | /* first source image pointer, skipping border */ |
||
| 1301 | const GLubyte *imgSrcA = srcPtr |
||
| 1302 | + (bytesPerSrcImage + bytesPerSrcRow + border) * bpt * border |
||
| 1303 | + img * (bytesPerSrcImage + srcImageOffset); |
||
| 1304 | /* second source image pointer, skipping border */ |
||
| 1305 | const GLubyte *imgSrcB = imgSrcA + srcImageOffset; |
||
| 1306 | /* address of the dest image, skipping border */ |
||
| 1307 | GLubyte *imgDst = dstPtr |
||
| 1308 | + (bytesPerDstImage + bytesPerDstRow + border) * bpt * border |
||
| 1309 | + img * bytesPerDstImage; |
||
| 1310 | |||
| 1311 | /* setup the four source row pointers and the dest row pointer */ |
||
| 1312 | const GLubyte *srcImgARowA = imgSrcA; |
||
| 1313 | const GLubyte *srcImgARowB = imgSrcA + srcRowOffset; |
||
| 1314 | const GLubyte *srcImgBRowA = imgSrcB; |
||
| 1315 | const GLubyte *srcImgBRowB = imgSrcB + srcRowOffset; |
||
| 1316 | GLubyte *dstImgRow = imgDst; |
||
| 1317 | |||
| 1318 | for (row = 0; row < dstHeightNB; row++) { |
||
| 1319 | do_row_3D(datatype, comps, srcWidthNB, |
||
| 1320 | srcImgARowA, srcImgARowB, |
||
| 1321 | srcImgBRowA, srcImgBRowB, |
||
| 1322 | dstWidthNB, dstImgRow); |
||
| 1323 | |||
| 1324 | /* advance to next rows */ |
||
| 1325 | srcImgARowA += bytesPerSrcRow + srcRowOffset; |
||
| 1326 | srcImgARowB += bytesPerSrcRow + srcRowOffset; |
||
| 1327 | srcImgBRowA += bytesPerSrcRow + srcRowOffset; |
||
| 1328 | srcImgBRowB += bytesPerSrcRow + srcRowOffset; |
||
| 1329 | dstImgRow += bytesPerDstRow; |
||
| 1330 | } |
||
| 1331 | } |
||
| 1332 | |||
| 1333 | |||
| 1334 | /* Luckily we can leverage the make_2d_mipmap() function here! */ |
||
| 1335 | if (border > 0) { |
||
| 1336 | /* do front border image */ |
||
| 1337 | make_2d_mipmap(datatype, comps, 1, srcWidth, srcHeight, srcPtr, srcRowStride, |
||
| 1338 | dstWidth, dstHeight, dstPtr, dstRowStride); |
||
| 1339 | /* do back border image */ |
||
| 1340 | make_2d_mipmap(datatype, comps, 1, srcWidth, srcHeight, |
||
| 1341 | srcPtr + bytesPerSrcImage * (srcDepth - 1), srcRowStride, |
||
| 1342 | dstWidth, dstHeight, |
||
| 1343 | dstPtr + bytesPerDstImage * (dstDepth - 1), dstRowStride); |
||
| 1344 | /* do four remaining border edges that span the image slices */ |
||
| 1345 | if (srcDepth == dstDepth) { |
||
| 1346 | /* just copy border pixels from src to dst */ |
||
| 1347 | for (img = 0; img < dstDepthNB; img++) { |
||
| 1348 | const GLubyte *src; |
||
| 1349 | GLubyte *dst; |
||
| 1350 | |||
| 1351 | /* do border along [img][row=0][col=0] */ |
||
| 1352 | src = srcPtr + (img + 1) * bytesPerSrcImage; |
||
| 1353 | dst = dstPtr + (img + 1) * bytesPerDstImage; |
||
| 1354 | memcpy(dst, src, bpt); |
||
| 1355 | |||
| 1356 | /* do border along [img][row=dstHeight-1][col=0] */ |
||
| 1357 | src = srcPtr + (img * 2 + 1) * bytesPerSrcImage |
||
| 1358 | + (srcHeight - 1) * bytesPerSrcRow; |
||
| 1359 | dst = dstPtr + (img + 1) * bytesPerDstImage |
||
| 1360 | + (dstHeight - 1) * bytesPerDstRow; |
||
| 1361 | memcpy(dst, src, bpt); |
||
| 1362 | |||
| 1363 | /* do border along [img][row=0][col=dstWidth-1] */ |
||
| 1364 | src = srcPtr + (img * 2 + 1) * bytesPerSrcImage |
||
| 1365 | + (srcWidth - 1) * bpt; |
||
| 1366 | dst = dstPtr + (img + 1) * bytesPerDstImage |
||
| 1367 | + (dstWidth - 1) * bpt; |
||
| 1368 | memcpy(dst, src, bpt); |
||
| 1369 | |||
| 1370 | /* do border along [img][row=dstHeight-1][col=dstWidth-1] */ |
||
| 1371 | src = srcPtr + (img * 2 + 1) * bytesPerSrcImage |
||
| 1372 | + (bytesPerSrcImage - bpt); |
||
| 1373 | dst = dstPtr + (img + 1) * bytesPerDstImage |
||
| 1374 | + (bytesPerDstImage - bpt); |
||
| 1375 | memcpy(dst, src, bpt); |
||
| 1376 | } |
||
| 1377 | } |
||
| 1378 | else { |
||
| 1379 | /* average border pixels from adjacent src image pairs */ |
||
| 1380 | ASSERT(srcDepthNB == 2 * dstDepthNB); |
||
| 1381 | for (img = 0; img < dstDepthNB; img++) { |
||
| 1382 | const GLubyte *src; |
||
| 1383 | GLubyte *dst; |
||
| 1384 | |||
| 1385 | /* do border along [img][row=0][col=0] */ |
||
| 1386 | src = srcPtr + (img * 2 + 1) * bytesPerSrcImage; |
||
| 1387 | dst = dstPtr + (img + 1) * bytesPerDstImage; |
||
| 1388 | do_row(datatype, comps, 1, src, src + srcImageOffset, 1, dst); |
||
| 1389 | |||
| 1390 | /* do border along [img][row=dstHeight-1][col=0] */ |
||
| 1391 | src = srcPtr + (img * 2 + 1) * bytesPerSrcImage |
||
| 1392 | + (srcHeight - 1) * bytesPerSrcRow; |
||
| 1393 | dst = dstPtr + (img + 1) * bytesPerDstImage |
||
| 1394 | + (dstHeight - 1) * bytesPerDstRow; |
||
| 1395 | do_row(datatype, comps, 1, src, src + srcImageOffset, 1, dst); |
||
| 1396 | |||
| 1397 | /* do border along [img][row=0][col=dstWidth-1] */ |
||
| 1398 | src = srcPtr + (img * 2 + 1) * bytesPerSrcImage |
||
| 1399 | + (srcWidth - 1) * bpt; |
||
| 1400 | dst = dstPtr + (img + 1) * bytesPerDstImage |
||
| 1401 | + (dstWidth - 1) * bpt; |
||
| 1402 | do_row(datatype, comps, 1, src, src + srcImageOffset, 1, dst); |
||
| 1403 | |||
| 1404 | /* do border along [img][row=dstHeight-1][col=dstWidth-1] */ |
||
| 1405 | src = srcPtr + (img * 2 + 1) * bytesPerSrcImage |
||
| 1406 | + (bytesPerSrcImage - bpt); |
||
| 1407 | dst = dstPtr + (img + 1) * bytesPerDstImage |
||
| 1408 | + (bytesPerDstImage - bpt); |
||
| 1409 | do_row(datatype, comps, 1, src, src + srcImageOffset, 1, dst); |
||
| 1410 | } |
||
| 1411 | } |
||
| 1412 | } |
||
| 1413 | } |
||
| 1414 | |||
| 1415 | |||
| 1416 | static void |
||
| 1417 | make_1d_stack_mipmap(GLenum datatype, GLuint comps, GLint border, |
||
| 1418 | GLint srcWidth, const GLubyte *srcPtr, GLuint srcRowStride, |
||
| 1419 | GLint dstWidth, GLint dstHeight, |
||
| 1420 | GLubyte *dstPtr, GLuint dstRowStride ) |
||
| 1421 | { |
||
| 1422 | const GLint bpt = bytes_per_pixel(datatype, comps); |
||
| 1423 | const GLint srcWidthNB = srcWidth - 2 * border; /* sizes w/out border */ |
||
| 1424 | const GLint dstWidthNB = dstWidth - 2 * border; |
||
| 1425 | const GLint dstHeightNB = dstHeight - 2 * border; |
||
| 1426 | const GLint srcRowBytes = bpt * srcRowStride; |
||
| 1427 | const GLint dstRowBytes = bpt * dstRowStride; |
||
| 1428 | const GLubyte *src; |
||
| 1429 | GLubyte *dst; |
||
| 1430 | GLint row; |
||
| 1431 | |||
| 1432 | /* Compute src and dst pointers, skipping any border */ |
||
| 1433 | src = srcPtr + border * ((srcWidth + 1) * bpt); |
||
| 1434 | dst = dstPtr + border * ((dstWidth + 1) * bpt); |
||
| 1435 | |||
| 1436 | for (row = 0; row < dstHeightNB; row++) { |
||
| 1437 | do_row(datatype, comps, srcWidthNB, src, src, |
||
| 1438 | dstWidthNB, dst); |
||
| 1439 | src += srcRowBytes; |
||
| 1440 | dst += dstRowBytes; |
||
| 1441 | } |
||
| 1442 | |||
| 1443 | if (border) { |
||
| 1444 | /* copy left-most pixel from source */ |
||
| 1445 | assert(dstPtr); |
||
| 1446 | assert(srcPtr); |
||
| 1447 | memcpy(dstPtr, srcPtr, bpt); |
||
| 1448 | /* copy right-most pixel from source */ |
||
| 1449 | memcpy(dstPtr + (dstWidth - 1) * bpt, |
||
| 1450 | srcPtr + (srcWidth - 1) * bpt, |
||
| 1451 | bpt); |
||
| 1452 | } |
||
| 1453 | } |
||
| 1454 | |||
| 1455 | |||
| 1456 | /** |
||
| 1457 | * \bug |
||
| 1458 | * There is quite a bit of refactoring that could be done with this function |
||
| 1459 | * and \c make_2d_mipmap. |
||
| 1460 | */ |
||
| 1461 | static void |
||
| 1462 | make_2d_stack_mipmap(GLenum datatype, GLuint comps, GLint border, |
||
| 1463 | GLint srcWidth, GLint srcHeight, |
||
| 1464 | const GLubyte *srcPtr, GLint srcRowStride, |
||
| 1465 | GLint dstWidth, GLint dstHeight, GLint dstDepth, |
||
| 1466 | GLubyte *dstPtr, GLint dstRowStride) |
||
| 1467 | { |
||
| 1468 | const GLint bpt = bytes_per_pixel(datatype, comps); |
||
| 1469 | const GLint srcWidthNB = srcWidth - 2 * border; /* sizes w/out border */ |
||
| 1470 | const GLint dstWidthNB = dstWidth - 2 * border; |
||
| 1471 | const GLint dstHeightNB = dstHeight - 2 * border; |
||
| 1472 | const GLint dstDepthNB = dstDepth - 2 * border; |
||
| 1473 | const GLint srcRowBytes = bpt * srcRowStride; |
||
| 1474 | const GLint dstRowBytes = bpt * dstRowStride; |
||
| 1475 | const GLubyte *srcA, *srcB; |
||
| 1476 | GLubyte *dst; |
||
| 1477 | GLint layer; |
||
| 1478 | GLint row; |
||
| 1479 | |||
| 1480 | /* Compute src and dst pointers, skipping any border */ |
||
| 1481 | srcA = srcPtr + border * ((srcWidth + 1) * bpt); |
||
| 1482 | if (srcHeight > 1) |
||
| 1483 | srcB = srcA + srcRowBytes; |
||
| 1484 | else |
||
| 1485 | srcB = srcA; |
||
| 1486 | dst = dstPtr + border * ((dstWidth + 1) * bpt); |
||
| 1487 | |||
| 1488 | for (layer = 0; layer < dstDepthNB; layer++) { |
||
| 1489 | for (row = 0; row < dstHeightNB; row++) { |
||
| 1490 | do_row(datatype, comps, srcWidthNB, srcA, srcB, |
||
| 1491 | dstWidthNB, dst); |
||
| 1492 | srcA += 2 * srcRowBytes; |
||
| 1493 | srcB += 2 * srcRowBytes; |
||
| 1494 | dst += dstRowBytes; |
||
| 1495 | } |
||
| 1496 | |||
| 1497 | /* This is ugly but probably won't be used much */ |
||
| 1498 | if (border > 0) { |
||
| 1499 | /* fill in dest border */ |
||
| 1500 | /* lower-left border pixel */ |
||
| 1501 | assert(dstPtr); |
||
| 1502 | assert(srcPtr); |
||
| 1503 | memcpy(dstPtr, srcPtr, bpt); |
||
| 1504 | /* lower-right border pixel */ |
||
| 1505 | memcpy(dstPtr + (dstWidth - 1) * bpt, |
||
| 1506 | srcPtr + (srcWidth - 1) * bpt, bpt); |
||
| 1507 | /* upper-left border pixel */ |
||
| 1508 | memcpy(dstPtr + dstWidth * (dstHeight - 1) * bpt, |
||
| 1509 | srcPtr + srcWidth * (srcHeight - 1) * bpt, bpt); |
||
| 1510 | /* upper-right border pixel */ |
||
| 1511 | memcpy(dstPtr + (dstWidth * dstHeight - 1) * bpt, |
||
| 1512 | srcPtr + (srcWidth * srcHeight - 1) * bpt, bpt); |
||
| 1513 | /* lower border */ |
||
| 1514 | do_row(datatype, comps, srcWidthNB, |
||
| 1515 | srcPtr + bpt, |
||
| 1516 | srcPtr + bpt, |
||
| 1517 | dstWidthNB, dstPtr + bpt); |
||
| 1518 | /* upper border */ |
||
| 1519 | do_row(datatype, comps, srcWidthNB, |
||
| 1520 | srcPtr + (srcWidth * (srcHeight - 1) + 1) * bpt, |
||
| 1521 | srcPtr + (srcWidth * (srcHeight - 1) + 1) * bpt, |
||
| 1522 | dstWidthNB, |
||
| 1523 | dstPtr + (dstWidth * (dstHeight - 1) + 1) * bpt); |
||
| 1524 | /* left and right borders */ |
||
| 1525 | if (srcHeight == dstHeight) { |
||
| 1526 | /* copy border pixel from src to dst */ |
||
| 1527 | for (row = 1; row < srcHeight; row++) { |
||
| 1528 | memcpy(dstPtr + dstWidth * row * bpt, |
||
| 1529 | srcPtr + srcWidth * row * bpt, bpt); |
||
| 1530 | memcpy(dstPtr + (dstWidth * row + dstWidth - 1) * bpt, |
||
| 1531 | srcPtr + (srcWidth * row + srcWidth - 1) * bpt, bpt); |
||
| 1532 | } |
||
| 1533 | } |
||
| 1534 | else { |
||
| 1535 | /* average two src pixels each dest pixel */ |
||
| 1536 | for (row = 0; row < dstHeightNB; row += 2) { |
||
| 1537 | do_row(datatype, comps, 1, |
||
| 1538 | srcPtr + (srcWidth * (row * 2 + 1)) * bpt, |
||
| 1539 | srcPtr + (srcWidth * (row * 2 + 2)) * bpt, |
||
| 1540 | 1, dstPtr + (dstWidth * row + 1) * bpt); |
||
| 1541 | do_row(datatype, comps, 1, |
||
| 1542 | srcPtr + (srcWidth * (row * 2 + 1) + srcWidth - 1) * bpt, |
||
| 1543 | srcPtr + (srcWidth * (row * 2 + 2) + srcWidth - 1) * bpt, |
||
| 1544 | 1, dstPtr + (dstWidth * row + 1 + dstWidth - 1) * bpt); |
||
| 1545 | } |
||
| 1546 | } |
||
| 1547 | } |
||
| 1548 | } |
||
| 1549 | } |
||
| 1550 | |||
| 1551 | |||
| 1552 | /** |
||
| 1553 | * Down-sample a texture image to produce the next lower mipmap level. |
||
| 1554 | * \param comps components per texel (1, 2, 3 or 4) |
||
| 1555 | * \param srcRowStride stride between source rows, in texels |
||
| 1556 | * \param dstRowStride stride between destination rows, in texels |
||
| 1557 | */ |
||
| 1558 | void |
||
| 1559 | _mesa_generate_mipmap_level(GLenum target, |
||
| 1560 | GLenum datatype, GLuint comps, |
||
| 1561 | GLint border, |
||
| 1562 | GLint srcWidth, GLint srcHeight, GLint srcDepth, |
||
| 1563 | const GLubyte *srcData, |
||
| 1564 | GLint srcRowStride, |
||
| 1565 | GLint dstWidth, GLint dstHeight, GLint dstDepth, |
||
| 1566 | GLubyte *dstData, |
||
| 1567 | GLint dstRowStride) |
||
| 1568 | { |
||
| 1569 | /* |
||
| 1570 | * We use simple 2x2 averaging to compute the next mipmap level. |
||
| 1571 | */ |
||
| 1572 | switch (target) { |
||
| 1573 | case GL_TEXTURE_1D: |
||
| 1574 | make_1d_mipmap(datatype, comps, border, |
||
| 1575 | srcWidth, srcData, |
||
| 1576 | dstWidth, dstData); |
||
| 1577 | break; |
||
| 1578 | case GL_TEXTURE_2D: |
||
| 1579 | case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB: |
||
| 1580 | case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB: |
||
| 1581 | case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB: |
||
| 1582 | case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB: |
||
| 1583 | case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB: |
||
| 1584 | case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB: |
||
| 1585 | make_2d_mipmap(datatype, comps, border, |
||
| 1586 | srcWidth, srcHeight, srcData, srcRowStride, |
||
| 1587 | dstWidth, dstHeight, dstData, dstRowStride); |
||
| 1588 | break; |
||
| 1589 | case GL_TEXTURE_3D: |
||
| 1590 | make_3d_mipmap(datatype, comps, border, |
||
| 1591 | srcWidth, srcHeight, srcDepth, |
||
| 1592 | srcData, srcRowStride, |
||
| 1593 | dstWidth, dstHeight, dstDepth, |
||
| 1594 | dstData, dstRowStride); |
||
| 1595 | break; |
||
| 1596 | case GL_TEXTURE_1D_ARRAY_EXT: |
||
| 1597 | make_1d_stack_mipmap(datatype, comps, border, |
||
| 1598 | srcWidth, srcData, srcRowStride, |
||
| 1599 | dstWidth, dstHeight, |
||
| 1600 | dstData, dstRowStride); |
||
| 1601 | break; |
||
| 1602 | case GL_TEXTURE_2D_ARRAY_EXT: |
||
| 1603 | make_2d_stack_mipmap(datatype, comps, border, |
||
| 1604 | srcWidth, srcHeight, |
||
| 1605 | srcData, srcRowStride, |
||
| 1606 | dstWidth, dstHeight, |
||
| 1607 | dstDepth, dstData, dstRowStride); |
||
| 1608 | break; |
||
| 1609 | case GL_TEXTURE_RECTANGLE_NV: |
||
| 1610 | /* no mipmaps, do nothing */ |
||
| 1611 | break; |
||
| 1612 | default: |
||
| 1613 | _mesa_problem(NULL, "bad dimensions in _mesa_generate_mipmaps"); |
||
| 1614 | return; |
||
| 1615 | } |
||
| 1616 | } |
||
| 1617 | |||
| 1618 | |||
| 1619 | /** |
||
| 1620 | * compute next (level+1) image size |
||
| 1621 | * \return GL_FALSE if no smaller size can be generated (eg. src is 1x1x1 size) |
||
| 1622 | */ |
||
| 1623 | static GLboolean |
||
| 1624 | next_mipmap_level_size(GLenum target, GLint border, |
||
| 1625 | GLint srcWidth, GLint srcHeight, GLint srcDepth, |
||
| 1626 | GLint *dstWidth, GLint *dstHeight, GLint *dstDepth) |
||
| 1627 | { |
||
| 1628 | if (srcWidth - 2 * border > 1) { |
||
| 1629 | *dstWidth = (srcWidth - 2 * border) / 2 + 2 * border; |
||
| 1630 | } |
||
| 1631 | else { |
||
| 1632 | *dstWidth = srcWidth; /* can't go smaller */ |
||
| 1633 | } |
||
| 1634 | |||
| 1635 | if ((srcHeight - 2 * border > 1) && |
||
| 1636 | (target != GL_TEXTURE_1D_ARRAY_EXT)) { |
||
| 1637 | *dstHeight = (srcHeight - 2 * border) / 2 + 2 * border; |
||
| 1638 | } |
||
| 1639 | else { |
||
| 1640 | *dstHeight = srcHeight; /* can't go smaller */ |
||
| 1641 | } |
||
| 1642 | |||
| 1643 | if ((srcDepth - 2 * border > 1) && |
||
| 1644 | (target != GL_TEXTURE_2D_ARRAY_EXT)) { |
||
| 1645 | *dstDepth = (srcDepth - 2 * border) / 2 + 2 * border; |
||
| 1646 | } |
||
| 1647 | else { |
||
| 1648 | *dstDepth = srcDepth; /* can't go smaller */ |
||
| 1649 | } |
||
| 1650 | |||
| 1651 | if (*dstWidth == srcWidth && |
||
| 1652 | *dstHeight == srcHeight && |
||
| 1653 | *dstDepth == srcDepth) { |
||
| 1654 | return GL_FALSE; |
||
| 1655 | } |
||
| 1656 | else { |
||
| 1657 | return GL_TRUE; |
||
| 1658 | } |
||
| 1659 | } |
||
| 1660 | |||
| 1661 | |||
| 1662 | |||
| 1663 | |||
| 1664 | /** |
||
| 1665 | * Automatic mipmap generation. |
||
| 1666 | * This is the fallback/default function for ctx->Driver.GenerateMipmap(). |
||
| 1667 | * Generate a complete set of mipmaps from texObj's BaseLevel image. |
||
| 1668 | * Stop at texObj's MaxLevel or when we get to the 1x1 texture. |
||
| 1669 | * For cube maps, target will be one of |
||
| 1670 | * GL_TEXTURE_CUBE_MAP_POSITIVE/NEGATIVE_X/Y/Z; never GL_TEXTURE_CUBE_MAP. |
||
| 1671 | */ |
||
| 1672 | void |
||
| 1673 | _mesa_generate_mipmap(struct gl_context *ctx, GLenum target, |
||
| 1674 | struct gl_texture_object *texObj) |
||
| 1675 | { |
||
| 1676 | const struct gl_texture_image *srcImage; |
||
| 1677 | gl_format convertFormat; |
||
| 1678 | const GLubyte *srcData = NULL; |
||
| 1679 | GLubyte *dstData = NULL; |
||
| 1680 | GLint level, maxLevels; |
||
| 1681 | GLenum datatype; |
||
| 1682 | GLuint comps; |
||
| 1683 | |||
| 1684 | ASSERT(texObj); |
||
| 1685 | srcImage = _mesa_select_tex_image(ctx, texObj, target, texObj->BaseLevel); |
||
| 1686 | ASSERT(srcImage); |
||
| 1687 | |||
| 1688 | maxLevels = _mesa_max_texture_levels(ctx, texObj->Target); |
||
| 1689 | ASSERT(maxLevels > 0); /* bad target */ |
||
| 1690 | |||
| 1691 | /* Find convertFormat - the format that do_row() will process */ |
||
| 1692 | |||
| 1693 | if (_mesa_is_format_compressed(srcImage->TexFormat)) { |
||
| 1694 | /* setup for compressed textures - need to allocate temporary |
||
| 1695 | * image buffers to hold uncompressed images. |
||
| 1696 | */ |
||
| 1697 | GLuint row; |
||
| 1698 | GLint components, size; |
||
| 1699 | GLchan *dst; |
||
| 1700 | |||
| 1701 | assert(texObj->Target == GL_TEXTURE_2D || |
||
| 1702 | texObj->Target == GL_TEXTURE_CUBE_MAP_ARB); |
||
| 1703 | |||
| 1704 | if (srcImage->_BaseFormat == GL_RGB) { |
||
| 1705 | convertFormat = MESA_FORMAT_RGB888; |
||
| 1706 | components = 3; |
||
| 1707 | } |
||
| 1708 | else if (srcImage->_BaseFormat == GL_RGBA) { |
||
| 1709 | convertFormat = MESA_FORMAT_RGBA8888; |
||
| 1710 | components = 4; |
||
| 1711 | } |
||
| 1712 | else { |
||
| 1713 | _mesa_problem(ctx, "bad srcImage->_BaseFormat in _mesa_generate_mipmaps"); |
||
| 1714 | return; |
||
| 1715 | } |
||
| 1716 | |||
| 1717 | /* allocate storage for uncompressed GL_RGB or GL_RGBA images */ |
||
| 1718 | size = _mesa_bytes_per_pixel(srcImage->_BaseFormat, CHAN_TYPE) |
||
| 1719 | * srcImage->Width * srcImage->Height * srcImage->Depth + 20; |
||
| 1720 | /* 20 extra bytes, just be safe when calling last FetchTexel */ |
||
| 1721 | srcData = (GLubyte *) malloc(size); |
||
| 1722 | if (!srcData) { |
||
| 1723 | _mesa_error(ctx, GL_OUT_OF_MEMORY, "generate mipmaps"); |
||
| 1724 | return; |
||
| 1725 | } |
||
| 1726 | dstData = (GLubyte *) malloc(size / 2); /* 1/4 would probably be OK */ |
||
| 1727 | if (!dstData) { |
||
| 1728 | _mesa_error(ctx, GL_OUT_OF_MEMORY, "generate mipmaps"); |
||
| 1729 | free((void *) srcData); |
||
| 1730 | return; |
||
| 1731 | } |
||
| 1732 | |||
| 1733 | /* decompress base image here */ |
||
| 1734 | dst = (GLchan *) srcData; |
||
| 1735 | for (row = 0; row < srcImage->Height; row++) { |
||
| 1736 | GLuint col; |
||
| 1737 | for (col = 0; col < srcImage->Width; col++) { |
||
| 1738 | srcImage->FetchTexelc(srcImage, col, row, 0, dst); |
||
| 1739 | dst += components; |
||
| 1740 | } |
||
| 1741 | } |
||
| 1742 | } |
||
| 1743 | else { |
||
| 1744 | /* uncompressed */ |
||
| 1745 | convertFormat = srcImage->TexFormat; |
||
| 1746 | } |
||
| 1747 | |||
| 1748 | _mesa_format_to_type_and_comps(convertFormat, &datatype, &comps); |
||
| 1749 | |||
| 1750 | for (level = texObj->BaseLevel; level < texObj->MaxLevel |
||
| 1751 | && level < maxLevels - 1; level++) { |
||
| 1752 | /* generate image[level+1] from image[level] */ |
||
| 1753 | const struct gl_texture_image *srcImage; |
||
| 1754 | struct gl_texture_image *dstImage; |
||
| 1755 | GLint srcWidth, srcHeight, srcDepth; |
||
| 1756 | GLint dstWidth, dstHeight, dstDepth; |
||
| 1757 | GLint border; |
||
| 1758 | GLboolean nextLevel; |
||
| 1759 | |||
| 1760 | /* get src image parameters */ |
||
| 1761 | srcImage = _mesa_select_tex_image(ctx, texObj, target, level); |
||
| 1762 | ASSERT(srcImage); |
||
| 1763 | srcWidth = srcImage->Width; |
||
| 1764 | srcHeight = srcImage->Height; |
||
| 1765 | srcDepth = srcImage->Depth; |
||
| 1766 | border = srcImage->Border; |
||
| 1767 | |||
| 1768 | nextLevel = next_mipmap_level_size(target, border, |
||
| 1769 | srcWidth, srcHeight, srcDepth, |
||
| 1770 | &dstWidth, &dstHeight, &dstDepth); |
||
| 1771 | if (!nextLevel) { |
||
| 1772 | /* all done */ |
||
| 1773 | if (_mesa_is_format_compressed(srcImage->TexFormat)) { |
||
| 1774 | free((void *) srcData); |
||
| 1775 | free(dstData); |
||
| 1776 | } |
||
| 1777 | return; |
||
| 1778 | } |
||
| 1779 | |||
| 1780 | /* get dest gl_texture_image */ |
||
| 1781 | dstImage = _mesa_get_tex_image(ctx, texObj, target, level + 1); |
||
| 1782 | if (!dstImage) { |
||
| 1783 | _mesa_error(ctx, GL_OUT_OF_MEMORY, "generating mipmaps"); |
||
| 1784 | return; |
||
| 1785 | } |
||
| 1786 | |||
| 1787 | /* Free old image data */ |
||
| 1788 | if (dstImage->Data) |
||
| 1789 | ctx->Driver.FreeTexImageData(ctx, dstImage); |
||
| 1790 | |||
| 1791 | /* initialize new image */ |
||
| 1792 | _mesa_init_teximage_fields(ctx, target, dstImage, dstWidth, dstHeight, |
||
| 1793 | dstDepth, border, srcImage->InternalFormat, |
||
| 1794 | srcImage->TexFormat); |
||
| 1795 | dstImage->DriverData = NULL; |
||
| 1796 | dstImage->FetchTexelc = srcImage->FetchTexelc; |
||
| 1797 | dstImage->FetchTexelf = srcImage->FetchTexelf; |
||
| 1798 | |||
| 1799 | /* Alloc new teximage data buffer */ |
||
| 1800 | { |
||
| 1801 | GLuint size = _mesa_format_image_size(dstImage->TexFormat, |
||
| 1802 | dstWidth, dstHeight, dstDepth); |
||
| 1803 | dstImage->Data = _mesa_alloc_texmemory(size); |
||
| 1804 | if (!dstImage->Data) { |
||
| 1805 | _mesa_error(ctx, GL_OUT_OF_MEMORY, "generating mipmaps"); |
||
| 1806 | return; |
||
| 1807 | } |
||
| 1808 | } |
||
| 1809 | |||
| 1810 | /* Setup src and dest data pointers */ |
||
| 1811 | if (_mesa_is_format_compressed(dstImage->TexFormat)) { |
||
| 1812 | /* srcData and dstData are already set */ |
||
| 1813 | ASSERT(srcData); |
||
| 1814 | ASSERT(dstData); |
||
| 1815 | } |
||
| 1816 | else { |
||
| 1817 | srcData = (const GLubyte *) srcImage->Data; |
||
| 1818 | dstData = (GLubyte *) dstImage->Data; |
||
| 1819 | } |
||
| 1820 | |||
| 1821 | ASSERT(dstImage->TexFormat); |
||
| 1822 | ASSERT(dstImage->FetchTexelc); |
||
| 1823 | ASSERT(dstImage->FetchTexelf); |
||
| 1824 | |||
| 1825 | _mesa_generate_mipmap_level(target, datatype, comps, border, |
||
| 1826 | srcWidth, srcHeight, srcDepth, |
||
| 1827 | srcData, srcImage->RowStride, |
||
| 1828 | dstWidth, dstHeight, dstDepth, |
||
| 1829 | dstData, dstImage->RowStride); |
||
| 1830 | |||
| 1831 | |||
| 1832 | if (_mesa_is_format_compressed(dstImage->TexFormat)) { |
||
| 1833 | GLubyte *temp; |
||
| 1834 | /* compress image from dstData into dstImage->Data */ |
||
| 1835 | const GLenum srcFormat = _mesa_get_format_base_format(convertFormat); |
||
| 1836 | GLint dstRowStride |
||
| 1837 | = _mesa_format_row_stride(dstImage->TexFormat, dstWidth); |
||
| 1838 | ASSERT(srcFormat == GL_RGB || srcFormat == GL_RGBA); |
||
| 1839 | |||
| 1840 | _mesa_texstore(ctx, 2, dstImage->_BaseFormat, |
||
| 1841 | dstImage->TexFormat, |
||
| 1842 | dstImage->Data, |
||
| 1843 | 0, 0, 0, /* dstX/Y/Zoffset */ |
||
| 1844 | dstRowStride, 0, /* strides */ |
||
| 1845 | dstWidth, dstHeight, 1, /* size */ |
||
| 1846 | srcFormat, CHAN_TYPE, |
||
| 1847 | dstData, /* src data, actually */ |
||
| 1848 | &ctx->DefaultPacking); |
||
| 1849 | |||
| 1850 | /* swap src and dest pointers */ |
||
| 1851 | temp = (GLubyte *) srcData; |
||
| 1852 | srcData = dstData; |
||
| 1853 | dstData = temp; |
||
| 1854 | } |
||
| 1855 | |||
| 1856 | } /* loop over mipmap levels */ |
||
| 1857 | } |
||
| 1858 | |||
| 1859 | |||
| 1860 | /** |
||
| 1861 | * Helper function for drivers which need to rescale texture images to |
||
| 1862 | * certain aspect ratios. |
||
| 1863 | * Nearest filtering only (for broken hardware that can't support |
||
| 1864 | * all aspect ratios). This can be made a lot faster, but I don't |
||
| 1865 | * really care enough... |
||
| 1866 | */ |
||
| 1867 | void |
||
| 1868 | _mesa_rescale_teximage2d(GLuint bytesPerPixel, |
||
| 1869 | GLuint srcStrideInPixels, |
||
| 1870 | GLuint dstRowStride, |
||
| 1871 | GLint srcWidth, GLint srcHeight, |
||
| 1872 | GLint dstWidth, GLint dstHeight, |
||
| 1873 | const GLvoid *srcImage, GLvoid *dstImage) |
||
| 1874 | { |
||
| 1875 | GLint row, col; |
||
| 1876 | |||
| 1877 | #define INNER_LOOP( TYPE, HOP, WOP ) \ |
||
| 1878 | for ( row = 0 ; row < dstHeight ; row++ ) { \ |
||
| 1879 | GLint srcRow = row HOP hScale; \ |
||
| 1880 | for ( col = 0 ; col < dstWidth ; col++ ) { \ |
||
| 1881 | GLint srcCol = col WOP wScale; \ |
||
| 1882 | dst[col] = src[srcRow * srcStrideInPixels + srcCol]; \ |
||
| 1883 | } \ |
||
| 1884 | dst = (TYPE *) ((GLubyte *) dst + dstRowStride); \ |
||
| 1885 | } \ |
||
| 1886 | |||
| 1887 | #define RESCALE_IMAGE( TYPE ) \ |
||
| 1888 | do { \ |
||
| 1889 | const TYPE *src = (const TYPE *)srcImage; \ |
||
| 1890 | TYPE *dst = (TYPE *)dstImage; \ |
||
| 1891 | \ |
||
| 1892 | if ( srcHeight < dstHeight ) { \ |
||
| 1893 | const GLint hScale = dstHeight / srcHeight; \ |
||
| 1894 | if ( srcWidth < dstWidth ) { \ |
||
| 1895 | const GLint wScale = dstWidth / srcWidth; \ |
||
| 1896 | INNER_LOOP( TYPE, /, / ); \ |
||
| 1897 | } \ |
||
| 1898 | else { \ |
||
| 1899 | const GLint wScale = srcWidth / dstWidth; \ |
||
| 1900 | INNER_LOOP( TYPE, /, * ); \ |
||
| 1901 | } \ |
||
| 1902 | } \ |
||
| 1903 | else { \ |
||
| 1904 | const GLint hScale = srcHeight / dstHeight; \ |
||
| 1905 | if ( srcWidth < dstWidth ) { \ |
||
| 1906 | const GLint wScale = dstWidth / srcWidth; \ |
||
| 1907 | INNER_LOOP( TYPE, *, / ); \ |
||
| 1908 | } \ |
||
| 1909 | else { \ |
||
| 1910 | const GLint wScale = srcWidth / dstWidth; \ |
||
| 1911 | INNER_LOOP( TYPE, *, * ); \ |
||
| 1912 | } \ |
||
| 1913 | } \ |
||
| 1914 | } while (0) |
||
| 1915 | |||
| 1916 | switch ( bytesPerPixel ) { |
||
| 1917 | case 4: |
||
| 1918 | RESCALE_IMAGE( GLuint ); |
||
| 1919 | break; |
||
| 1920 | |||
| 1921 | case 2: |
||
| 1922 | RESCALE_IMAGE( GLushort ); |
||
| 1923 | break; |
||
| 1924 | |||
| 1925 | case 1: |
||
| 1926 | RESCALE_IMAGE( GLubyte ); |
||
| 1927 | break; |
||
| 1928 | default: |
||
| 1929 | _mesa_problem(NULL,"unexpected bytes/pixel in _mesa_rescale_teximage2d"); |
||
| 1930 | } |
||
| 1931 | } |
||
| 1932 | |||
| 1933 | |||
| 1934 | /** |
||
| 1935 | * Upscale an image by replication, not (typical) stretching. |
||
| 1936 | * We use this when the image width or height is less than a |
||
| 1937 | * certain size (4, 8) and we need to upscale an image. |
||
| 1938 | */ |
||
| 1939 | void |
||
| 1940 | _mesa_upscale_teximage2d(GLsizei inWidth, GLsizei inHeight, |
||
| 1941 | GLsizei outWidth, GLsizei outHeight, |
||
| 1942 | GLint comps, const GLchan *src, GLint srcRowStride, |
||
| 1943 | GLchan *dest ) |
||
| 1944 | { |
||
| 1945 | GLint i, j, k; |
||
| 1946 | |||
| 1947 | ASSERT(outWidth >= inWidth); |
||
| 1948 | ASSERT(outHeight >= inHeight); |
||
| 1949 | #if 0 |
||
| 1950 | ASSERT(inWidth == 1 || inWidth == 2 || inHeight == 1 || inHeight == 2); |
||
| 1951 | ASSERT((outWidth & 3) == 0); |
||
| 1952 | ASSERT((outHeight & 3) == 0); |
||
| 1953 | #endif |
||
| 1954 | |||
| 1955 | for (i = 0; i < outHeight; i++) { |
||
| 1956 | const GLint ii = i % inHeight; |
||
| 1957 | for (j = 0; j < outWidth; j++) { |
||
| 1958 | const GLint jj = j % inWidth; |
||
| 1959 | for (k = 0; k < comps; k++) { |
||
| 1960 | dest[(i * outWidth + j) * comps + k] |
||
| 1961 | = src[ii * srcRowStride + jj * comps + k]; |
||
| 1962 | } |
||
| 1963 | } |
||
| 1964 | } |
||
| 1965 | } |
||
| 1966 |