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Diffstat (limited to 'src/mesa/main/mipmap.c')
| -rw-r--r-- | src/mesa/main/mipmap.c | 1966 |
1 files changed, 0 insertions, 1966 deletions
diff --git a/src/mesa/main/mipmap.c b/src/mesa/main/mipmap.c deleted file mode 100644 index ad63b17..0000000 --- a/src/mesa/main/mipmap.c +++ /dev/null @@ -1,1966 +0,0 @@ -/* - * Mesa 3-D graphics library - * Version: 7.1 - * - * Copyright (C) 1999-2007 Brian Paul All Rights Reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included - * in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS - * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN - * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - */ - - -/** - * \file mipmap.c mipmap generation and teximage resizing functions. - */ - -#include "imports.h" -#include "formats.h" -#include "mipmap.h" -#include "teximage.h" -#include "texstore.h" -#include "image.h" - - - -static GLint -bytes_per_pixel(GLenum datatype, GLuint comps) -{ - GLint b = _mesa_sizeof_packed_type(datatype); - assert(b >= 0); - - if (_mesa_type_is_packed(datatype)) - return b; - else - return b * comps; -} - - -/** - * \name Support macros for do_row and do_row_3d - * - * The macro madness is here for two reasons. First, it compacts the code - * slightly. Second, it makes it much easier to adjust the specifics of the - * filter to tune the rounding characteristics. - */ -/*@{*/ -#define DECLARE_ROW_POINTERS(t, e) \ - const t(*rowA)[e] = (const t(*)[e]) srcRowA; \ - const t(*rowB)[e] = (const t(*)[e]) srcRowB; \ - const t(*rowC)[e] = (const t(*)[e]) srcRowC; \ - const t(*rowD)[e] = (const t(*)[e]) srcRowD; \ - t(*dst)[e] = (t(*)[e]) dstRow - -#define DECLARE_ROW_POINTERS0(t) \ - const t *rowA = (const t *) srcRowA; \ - const t *rowB = (const t *) srcRowB; \ - const t *rowC = (const t *) srcRowC; \ - const t *rowD = (const t *) srcRowD; \ - t *dst = (t *) dstRow - -#define FILTER_SUM_3D(Aj, Ak, Bj, Bk, Cj, Ck, Dj, Dk) \ - ((unsigned) Aj + (unsigned) Ak \ - + (unsigned) Bj + (unsigned) Bk \ - + (unsigned) Cj + (unsigned) Ck \ - + (unsigned) Dj + (unsigned) Dk \ - + 4) >> 3 - -#define FILTER_3D(e) \ - do { \ - dst[i][e] = FILTER_SUM_3D(rowA[j][e], rowA[k][e], \ - rowB[j][e], rowB[k][e], \ - rowC[j][e], rowC[k][e], \ - rowD[j][e], rowD[k][e]); \ - } while(0) - -#define FILTER_SUM_3D_SIGNED(Aj, Ak, Bj, Bk, Cj, Ck, Dj, Dk) \ - (Aj + Ak \ - + Bj + Bk \ - + Cj + Ck \ - + Dj + Dk \ - + 4) / 8 - -#define FILTER_3D_SIGNED(e) \ - do { \ - dst[i][e] = FILTER_SUM_3D_SIGNED(rowA[j][e], rowA[k][e], \ - rowB[j][e], rowB[k][e], \ - rowC[j][e], rowC[k][e], \ - rowD[j][e], rowD[k][e]); \ - } while(0) - -#define FILTER_F_3D(e) \ - do { \ - dst[i][e] = (rowA[j][e] + rowA[k][e] \ - + rowB[j][e] + rowB[k][e] \ - + rowC[j][e] + rowC[k][e] \ - + rowD[j][e] + rowD[k][e]) * 0.125F; \ - } while(0) - -#define FILTER_HF_3D(e) \ - do { \ - const GLfloat aj = _mesa_half_to_float(rowA[j][e]); \ - const GLfloat ak = _mesa_half_to_float(rowA[k][e]); \ - const GLfloat bj = _mesa_half_to_float(rowB[j][e]); \ - const GLfloat bk = _mesa_half_to_float(rowB[k][e]); \ - const GLfloat cj = _mesa_half_to_float(rowC[j][e]); \ - const GLfloat ck = _mesa_half_to_float(rowC[k][e]); \ - const GLfloat dj = _mesa_half_to_float(rowD[j][e]); \ - const GLfloat dk = _mesa_half_to_float(rowD[k][e]); \ - dst[i][e] = _mesa_float_to_half((aj + ak + bj + bk + cj + ck + dj + dk) \ - * 0.125F); \ - } while(0) -/*@}*/ - - -/** - * Average together two rows of a source image to produce a single new - * row in the dest image. It's legal for the two source rows to point - * to the same data. The source width must be equal to either the - * dest width or two times the dest width. - * \param datatype GL_UNSIGNED_BYTE, GL_UNSIGNED_SHORT, GL_FLOAT, etc. - * \param comps number of components per pixel (1..4) - */ -static void -do_row(GLenum datatype, GLuint comps, GLint srcWidth, - const GLvoid *srcRowA, const GLvoid *srcRowB, - GLint dstWidth, GLvoid *dstRow) -{ - const GLuint k0 = (srcWidth == dstWidth) ? 0 : 1; - const GLuint colStride = (srcWidth == dstWidth) ? 1 : 2; - - ASSERT(comps >= 1); - ASSERT(comps <= 4); - - /* This assertion is no longer valid with non-power-of-2 textures - assert(srcWidth == dstWidth || srcWidth == 2 * dstWidth); - */ - - if (datatype == GL_UNSIGNED_BYTE && comps == 4) { - GLuint i, j, k; - const GLubyte(*rowA)[4] = (const GLubyte(*)[4]) srcRowA; - const GLubyte(*rowB)[4] = (const GLubyte(*)[4]) srcRowB; - GLubyte(*dst)[4] = (GLubyte(*)[4]) dstRow; - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) / 4; - dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) / 4; - dst[i][2] = (rowA[j][2] + rowA[k][2] + rowB[j][2] + rowB[k][2]) / 4; - dst[i][3] = (rowA[j][3] + rowA[k][3] + rowB[j][3] + rowB[k][3]) / 4; - } - } - else if (datatype == GL_UNSIGNED_BYTE && comps == 3) { - GLuint i, j, k; - const GLubyte(*rowA)[3] = (const GLubyte(*)[3]) srcRowA; - const GLubyte(*rowB)[3] = (const GLubyte(*)[3]) srcRowB; - GLubyte(*dst)[3] = (GLubyte(*)[3]) dstRow; - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) / 4; - dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) / 4; - dst[i][2] = (rowA[j][2] + rowA[k][2] + rowB[j][2] + rowB[k][2]) / 4; - } - } - else if (datatype == GL_UNSIGNED_BYTE && comps == 2) { - GLuint i, j, k; - const GLubyte(*rowA)[2] = (const GLubyte(*)[2]) srcRowA; - const GLubyte(*rowB)[2] = (const GLubyte(*)[2]) srcRowB; - GLubyte(*dst)[2] = (GLubyte(*)[2]) dstRow; - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) >> 2; - dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) >> 2; - } - } - else if (datatype == GL_UNSIGNED_BYTE && comps == 1) { - GLuint i, j, k; - const GLubyte *rowA = (const GLubyte *) srcRowA; - const GLubyte *rowB = (const GLubyte *) srcRowB; - GLubyte *dst = (GLubyte *) dstRow; - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - dst[i] = (rowA[j] + rowA[k] + rowB[j] + rowB[k]) >> 2; - } - } - - else if (datatype == GL_BYTE && comps == 4) { - GLuint i, j, k; - const GLbyte(*rowA)[4] = (const GLbyte(*)[4]) srcRowA; - const GLbyte(*rowB)[4] = (const GLbyte(*)[4]) srcRowB; - GLbyte(*dst)[4] = (GLbyte(*)[4]) dstRow; - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) / 4; - dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) / 4; - dst[i][2] = (rowA[j][2] + rowA[k][2] + rowB[j][2] + rowB[k][2]) / 4; - dst[i][3] = (rowA[j][3] + rowA[k][3] + rowB[j][3] + rowB[k][3]) / 4; - } - } - else if (datatype == GL_BYTE && comps == 3) { - GLuint i, j, k; - const GLbyte(*rowA)[3] = (const GLbyte(*)[3]) srcRowA; - const GLbyte(*rowB)[3] = (const GLbyte(*)[3]) srcRowB; - GLbyte(*dst)[3] = (GLbyte(*)[3]) dstRow; - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) / 4; - dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) / 4; - dst[i][2] = (rowA[j][2] + rowA[k][2] + rowB[j][2] + rowB[k][2]) / 4; - } - } - else if (datatype == GL_BYTE && comps == 2) { - GLuint i, j, k; - const GLbyte(*rowA)[2] = (const GLbyte(*)[2]) srcRowA; - const GLbyte(*rowB)[2] = (const GLbyte(*)[2]) srcRowB; - GLbyte(*dst)[2] = (GLbyte(*)[2]) dstRow; - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) / 4; - dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) / 4; - } - } - else if (datatype == GL_BYTE && comps == 1) { - GLuint i, j, k; - const GLbyte *rowA = (const GLbyte *) srcRowA; - const GLbyte *rowB = (const GLbyte *) srcRowB; - GLbyte *dst = (GLbyte *) dstRow; - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - dst[i] = (rowA[j] + rowA[k] + rowB[j] + rowB[k]) / 4; - } - } - - else if (datatype == GL_UNSIGNED_SHORT && comps == 4) { - GLuint i, j, k; - const GLushort(*rowA)[4] = (const GLushort(*)[4]) srcRowA; - const GLushort(*rowB)[4] = (const GLushort(*)[4]) srcRowB; - GLushort(*dst)[4] = (GLushort(*)[4]) dstRow; - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) / 4; - dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) / 4; - dst[i][2] = (rowA[j][2] + rowA[k][2] + rowB[j][2] + rowB[k][2]) / 4; - dst[i][3] = (rowA[j][3] + rowA[k][3] + rowB[j][3] + rowB[k][3]) / 4; - } - } - else if (datatype == GL_UNSIGNED_SHORT && comps == 3) { - GLuint i, j, k; - const GLushort(*rowA)[3] = (const GLushort(*)[3]) srcRowA; - const GLushort(*rowB)[3] = (const GLushort(*)[3]) srcRowB; - GLushort(*dst)[3] = (GLushort(*)[3]) dstRow; - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) / 4; - dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) / 4; - dst[i][2] = (rowA[j][2] + rowA[k][2] + rowB[j][2] + rowB[k][2]) / 4; - } - } - else if (datatype == GL_UNSIGNED_SHORT && comps == 2) { - GLuint i, j, k; - const GLushort(*rowA)[2] = (const GLushort(*)[2]) srcRowA; - const GLushort(*rowB)[2] = (const GLushort(*)[2]) srcRowB; - GLushort(*dst)[2] = (GLushort(*)[2]) dstRow; - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) / 4; - dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) / 4; - } - } - else if (datatype == GL_UNSIGNED_SHORT && comps == 1) { - GLuint i, j, k; - const GLushort *rowA = (const GLushort *) srcRowA; - const GLushort *rowB = (const GLushort *) srcRowB; - GLushort *dst = (GLushort *) dstRow; - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - dst[i] = (rowA[j] + rowA[k] + rowB[j] + rowB[k]) / 4; - } - } - - else if (datatype == GL_SHORT && comps == 4) { - GLuint i, j, k; - const GLshort(*rowA)[4] = (const GLshort(*)[4]) srcRowA; - const GLshort(*rowB)[4] = (const GLshort(*)[4]) srcRowB; - GLshort(*dst)[4] = (GLshort(*)[4]) dstRow; - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) / 4; - dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) / 4; - dst[i][2] = (rowA[j][2] + rowA[k][2] + rowB[j][2] + rowB[k][2]) / 4; - dst[i][3] = (rowA[j][3] + rowA[k][3] + rowB[j][3] + rowB[k][3]) / 4; - } - } - else if (datatype == GL_SHORT && comps == 3) { - GLuint i, j, k; - const GLshort(*rowA)[3] = (const GLshort(*)[3]) srcRowA; - const GLshort(*rowB)[3] = (const GLshort(*)[3]) srcRowB; - GLshort(*dst)[3] = (GLshort(*)[3]) dstRow; - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) / 4; - dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) / 4; - dst[i][2] = (rowA[j][2] + rowA[k][2] + rowB[j][2] + rowB[k][2]) / 4; - } - } - else if (datatype == GL_SHORT && comps == 2) { - GLuint i, j, k; - const GLshort(*rowA)[2] = (const GLshort(*)[2]) srcRowA; - const GLshort(*rowB)[2] = (const GLshort(*)[2]) srcRowB; - GLshort(*dst)[2] = (GLshort(*)[2]) dstRow; - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - dst[i][0] = (rowA[j][0] + rowA[k][0] + rowB[j][0] + rowB[k][0]) / 4; - dst[i][1] = (rowA[j][1] + rowA[k][1] + rowB[j][1] + rowB[k][1]) / 4; - } - } - else if (datatype == GL_SHORT && comps == 1) { - GLuint i, j, k; - const GLshort *rowA = (const GLshort *) srcRowA; - const GLshort *rowB = (const GLshort *) srcRowB; - GLshort *dst = (GLshort *) dstRow; - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - dst[i] = (rowA[j] + rowA[k] + rowB[j] + rowB[k]) / 4; - } - } - - else if (datatype == GL_FLOAT && comps == 4) { - GLuint i, j, k; - const GLfloat(*rowA)[4] = (const GLfloat(*)[4]) srcRowA; - const GLfloat(*rowB)[4] = (const GLfloat(*)[4]) srcRowB; - GLfloat(*dst)[4] = (GLfloat(*)[4]) dstRow; - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - dst[i][0] = (rowA[j][0] + rowA[k][0] + - rowB[j][0] + rowB[k][0]) * 0.25F; - dst[i][1] = (rowA[j][1] + rowA[k][1] + - rowB[j][1] + rowB[k][1]) * 0.25F; - dst[i][2] = (rowA[j][2] + rowA[k][2] + - rowB[j][2] + rowB[k][2]) * 0.25F; - dst[i][3] = (rowA[j][3] + rowA[k][3] + - rowB[j][3] + rowB[k][3]) * 0.25F; - } - } - else if (datatype == GL_FLOAT && comps == 3) { - GLuint i, j, k; - const GLfloat(*rowA)[3] = (const GLfloat(*)[3]) srcRowA; - const GLfloat(*rowB)[3] = (const GLfloat(*)[3]) srcRowB; - GLfloat(*dst)[3] = (GLfloat(*)[3]) dstRow; - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - dst[i][0] = (rowA[j][0] + rowA[k][0] + - rowB[j][0] + rowB[k][0]) * 0.25F; - dst[i][1] = (rowA[j][1] + rowA[k][1] + - rowB[j][1] + rowB[k][1]) * 0.25F; - dst[i][2] = (rowA[j][2] + rowA[k][2] + - rowB[j][2] + rowB[k][2]) * 0.25F; - } - } - else if (datatype == GL_FLOAT && comps == 2) { - GLuint i, j, k; - const GLfloat(*rowA)[2] = (const GLfloat(*)[2]) srcRowA; - const GLfloat(*rowB)[2] = (const GLfloat(*)[2]) srcRowB; - GLfloat(*dst)[2] = (GLfloat(*)[2]) dstRow; - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - dst[i][0] = (rowA[j][0] + rowA[k][0] + - rowB[j][0] + rowB[k][0]) * 0.25F; - dst[i][1] = (rowA[j][1] + rowA[k][1] + - rowB[j][1] + rowB[k][1]) * 0.25F; - } - } - else if (datatype == GL_FLOAT && comps == 1) { - GLuint i, j, k; - const GLfloat *rowA = (const GLfloat *) srcRowA; - const GLfloat *rowB = (const GLfloat *) srcRowB; - GLfloat *dst = (GLfloat *) dstRow; - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - dst[i] = (rowA[j] + rowA[k] + rowB[j] + rowB[k]) * 0.25F; - } - } - - else if (datatype == GL_HALF_FLOAT_ARB && comps == 4) { - GLuint i, j, k, comp; - const GLhalfARB(*rowA)[4] = (const GLhalfARB(*)[4]) srcRowA; - const GLhalfARB(*rowB)[4] = (const GLhalfARB(*)[4]) srcRowB; - GLhalfARB(*dst)[4] = (GLhalfARB(*)[4]) dstRow; - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - for (comp = 0; comp < 4; comp++) { - GLfloat aj, ak, bj, bk; - aj = _mesa_half_to_float(rowA[j][comp]); - ak = _mesa_half_to_float(rowA[k][comp]); - bj = _mesa_half_to_float(rowB[j][comp]); - bk = _mesa_half_to_float(rowB[k][comp]); - dst[i][comp] = _mesa_float_to_half((aj + ak + bj + bk) * 0.25F); - } - } - } - else if (datatype == GL_HALF_FLOAT_ARB && comps == 3) { - GLuint i, j, k, comp; - const GLhalfARB(*rowA)[3] = (const GLhalfARB(*)[3]) srcRowA; - const GLhalfARB(*rowB)[3] = (const GLhalfARB(*)[3]) srcRowB; - GLhalfARB(*dst)[3] = (GLhalfARB(*)[3]) dstRow; - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - for (comp = 0; comp < 3; comp++) { - GLfloat aj, ak, bj, bk; - aj = _mesa_half_to_float(rowA[j][comp]); - ak = _mesa_half_to_float(rowA[k][comp]); - bj = _mesa_half_to_float(rowB[j][comp]); - bk = _mesa_half_to_float(rowB[k][comp]); - dst[i][comp] = _mesa_float_to_half((aj + ak + bj + bk) * 0.25F); - } - } - } - else if (datatype == GL_HALF_FLOAT_ARB && comps == 2) { - GLuint i, j, k, comp; - const GLhalfARB(*rowA)[2] = (const GLhalfARB(*)[2]) srcRowA; - const GLhalfARB(*rowB)[2] = (const GLhalfARB(*)[2]) srcRowB; - GLhalfARB(*dst)[2] = (GLhalfARB(*)[2]) dstRow; - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - for (comp = 0; comp < 2; comp++) { - GLfloat aj, ak, bj, bk; - aj = _mesa_half_to_float(rowA[j][comp]); - ak = _mesa_half_to_float(rowA[k][comp]); - bj = _mesa_half_to_float(rowB[j][comp]); - bk = _mesa_half_to_float(rowB[k][comp]); - dst[i][comp] = _mesa_float_to_half((aj + ak + bj + bk) * 0.25F); - } - } - } - else if (datatype == GL_HALF_FLOAT_ARB && comps == 1) { - GLuint i, j, k; - const GLhalfARB *rowA = (const GLhalfARB *) srcRowA; - const GLhalfARB *rowB = (const GLhalfARB *) srcRowB; - GLhalfARB *dst = (GLhalfARB *) dstRow; - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - GLfloat aj, ak, bj, bk; - aj = _mesa_half_to_float(rowA[j]); - ak = _mesa_half_to_float(rowA[k]); - bj = _mesa_half_to_float(rowB[j]); - bk = _mesa_half_to_float(rowB[k]); - dst[i] = _mesa_float_to_half((aj + ak + bj + bk) * 0.25F); - } - } - - else if (datatype == GL_UNSIGNED_INT && comps == 1) { - GLuint i, j, k; - const GLuint *rowA = (const GLuint *) srcRowA; - const GLuint *rowB = (const GLuint *) srcRowB; - GLuint *dst = (GLuint *) dstRow; - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - dst[i] = (GLfloat)(rowA[j] / 4 + rowA[k] / 4 + rowB[j] / 4 + rowB[k] / 4); - } - } - - else if (datatype == GL_UNSIGNED_SHORT_5_6_5 && comps == 3) { - GLuint i, j, k; - const GLushort *rowA = (const GLushort *) srcRowA; - const GLushort *rowB = (const GLushort *) srcRowB; - GLushort *dst = (GLushort *) dstRow; - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - const GLint rowAr0 = rowA[j] & 0x1f; - const GLint rowAr1 = rowA[k] & 0x1f; - const GLint rowBr0 = rowB[j] & 0x1f; - const GLint rowBr1 = rowB[k] & 0x1f; - const GLint rowAg0 = (rowA[j] >> 5) & 0x3f; - const GLint rowAg1 = (rowA[k] >> 5) & 0x3f; - const GLint rowBg0 = (rowB[j] >> 5) & 0x3f; - const GLint rowBg1 = (rowB[k] >> 5) & 0x3f; - const GLint rowAb0 = (rowA[j] >> 11) & 0x1f; - const GLint rowAb1 = (rowA[k] >> 11) & 0x1f; - const GLint rowBb0 = (rowB[j] >> 11) & 0x1f; - const GLint rowBb1 = (rowB[k] >> 11) & 0x1f; - const GLint red = (rowAr0 + rowAr1 + rowBr0 + rowBr1) >> 2; - const GLint green = (rowAg0 + rowAg1 + rowBg0 + rowBg1) >> 2; - const GLint blue = (rowAb0 + rowAb1 + rowBb0 + rowBb1) >> 2; - dst[i] = (blue << 11) | (green << 5) | red; - } - } - else if (datatype == GL_UNSIGNED_SHORT_4_4_4_4 && comps == 4) { - GLuint i, j, k; - const GLushort *rowA = (const GLushort *) srcRowA; - const GLushort *rowB = (const GLushort *) srcRowB; - GLushort *dst = (GLushort *) dstRow; - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - const GLint rowAr0 = rowA[j] & 0xf; - const GLint rowAr1 = rowA[k] & 0xf; - const GLint rowBr0 = rowB[j] & 0xf; - const GLint rowBr1 = rowB[k] & 0xf; - const GLint rowAg0 = (rowA[j] >> 4) & 0xf; - const GLint rowAg1 = (rowA[k] >> 4) & 0xf; - const GLint rowBg0 = (rowB[j] >> 4) & 0xf; - const GLint rowBg1 = (rowB[k] >> 4) & 0xf; - const GLint rowAb0 = (rowA[j] >> 8) & 0xf; - const GLint rowAb1 = (rowA[k] >> 8) & 0xf; - const GLint rowBb0 = (rowB[j] >> 8) & 0xf; - const GLint rowBb1 = (rowB[k] >> 8) & 0xf; - const GLint rowAa0 = (rowA[j] >> 12) & 0xf; - const GLint rowAa1 = (rowA[k] >> 12) & 0xf; - const GLint rowBa0 = (rowB[j] >> 12) & 0xf; - const GLint rowBa1 = (rowB[k] >> 12) & 0xf; - const GLint red = (rowAr0 + rowAr1 + rowBr0 + rowBr1) >> 2; - const GLint green = (rowAg0 + rowAg1 + rowBg0 + rowBg1) >> 2; - const GLint blue = (rowAb0 + rowAb1 + rowBb0 + rowBb1) >> 2; - const GLint alpha = (rowAa0 + rowAa1 + rowBa0 + rowBa1) >> 2; - dst[i] = (alpha << 12) | (blue << 8) | (green << 4) | red; - } - } - else if (datatype == GL_UNSIGNED_SHORT_1_5_5_5_REV && comps == 4) { - GLuint i, j, k; - const GLushort *rowA = (const GLushort *) srcRowA; - const GLushort *rowB = (const GLushort *) srcRowB; - GLushort *dst = (GLushort *) dstRow; - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - const GLint rowAr0 = rowA[j] & 0x1f; - const GLint rowAr1 = rowA[k] & 0x1f; - const GLint rowBr0 = rowB[j] & 0x1f; - const GLint rowBr1 = rowB[k] & 0x1f; - const GLint rowAg0 = (rowA[j] >> 5) & 0x1f; - const GLint rowAg1 = (rowA[k] >> 5) & 0x1f; - const GLint rowBg0 = (rowB[j] >> 5) & 0x1f; - const GLint rowBg1 = (rowB[k] >> 5) & 0x1f; - const GLint rowAb0 = (rowA[j] >> 10) & 0x1f; - const GLint rowAb1 = (rowA[k] >> 10) & 0x1f; - const GLint rowBb0 = (rowB[j] >> 10) & 0x1f; - const GLint rowBb1 = (rowB[k] >> 10) & 0x1f; - const GLint rowAa0 = (rowA[j] >> 15) & 0x1; - const GLint rowAa1 = (rowA[k] >> 15) & 0x1; - const GLint rowBa0 = (rowB[j] >> 15) & 0x1; - const GLint rowBa1 = (rowB[k] >> 15) & 0x1; - const GLint red = (rowAr0 + rowAr1 + rowBr0 + rowBr1) >> 2; - const GLint green = (rowAg0 + rowAg1 + rowBg0 + rowBg1) >> 2; - const GLint blue = (rowAb0 + rowAb1 + rowBb0 + rowBb1) >> 2; - const GLint alpha = (rowAa0 + rowAa1 + rowBa0 + rowBa1) >> 2; - dst[i] = (alpha << 15) | (blue << 10) | (green << 5) | red; - } - } - else if (datatype == GL_UNSIGNED_SHORT_5_5_5_1 && comps == 4) { - GLuint i, j, k; - const GLushort *rowA = (const GLushort *) srcRowA; - const GLushort *rowB = (const GLushort *) srcRowB; - GLushort *dst = (GLushort *) dstRow; - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - const GLint rowAr0 = (rowA[j] >> 11) & 0x1f; - const GLint rowAr1 = (rowA[k] >> 11) & 0x1f; - const GLint rowBr0 = (rowB[j] >> 11) & 0x1f; - const GLint rowBr1 = (rowB[k] >> 11) & 0x1f; - const GLint rowAg0 = (rowA[j] >> 6) & 0x1f; - const GLint rowAg1 = (rowA[k] >> 6) & 0x1f; - const GLint rowBg0 = (rowB[j] >> 6) & 0x1f; - const GLint rowBg1 = (rowB[k] >> 6) & 0x1f; - const GLint rowAb0 = (rowA[j] >> 1) & 0x1f; - const GLint rowAb1 = (rowA[k] >> 1) & 0x1f; - const GLint rowBb0 = (rowB[j] >> 1) & 0x1f; - const GLint rowBb1 = (rowB[k] >> 1) & 0x1f; - const GLint rowAa0 = (rowA[j] & 0x1); - const GLint rowAa1 = (rowA[k] & 0x1); - const GLint rowBa0 = (rowB[j] & 0x1); - const GLint rowBa1 = (rowB[k] & 0x1); - const GLint red = (rowAr0 + rowAr1 + rowBr0 + rowBr1) >> 2; - const GLint green = (rowAg0 + rowAg1 + rowBg0 + rowBg1) >> 2; - const GLint blue = (rowAb0 + rowAb1 + rowBb0 + rowBb1) >> 2; - const GLint alpha = (rowAa0 + rowAa1 + rowBa0 + rowBa1) >> 2; - dst[i] = (red << 11) | (green << 6) | (blue << 1) | alpha; - } - } - - else if (datatype == GL_UNSIGNED_BYTE_3_3_2 && comps == 3) { - GLuint i, j, k; - const GLubyte *rowA = (const GLubyte *) srcRowA; - const GLubyte *rowB = (const GLubyte *) srcRowB; - GLubyte *dst = (GLubyte *) dstRow; - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - const GLint rowAr0 = rowA[j] & 0x3; - const GLint rowAr1 = rowA[k] & 0x3; - const GLint rowBr0 = rowB[j] & 0x3; - const GLint rowBr1 = rowB[k] & 0x3; - const GLint rowAg0 = (rowA[j] >> 2) & 0x7; - const GLint rowAg1 = (rowA[k] >> 2) & 0x7; - const GLint rowBg0 = (rowB[j] >> 2) & 0x7; - const GLint rowBg1 = (rowB[k] >> 2) & 0x7; - const GLint rowAb0 = (rowA[j] >> 5) & 0x7; - const GLint rowAb1 = (rowA[k] >> 5) & 0x7; - const GLint rowBb0 = (rowB[j] >> 5) & 0x7; - const GLint rowBb1 = (rowB[k] >> 5) & 0x7; - const GLint red = (rowAr0 + rowAr1 + rowBr0 + rowBr1) >> 2; - const GLint green = (rowAg0 + rowAg1 + rowBg0 + rowBg1) >> 2; - const GLint blue = (rowAb0 + rowAb1 + rowBb0 + rowBb1) >> 2; - dst[i] = (blue << 5) | (green << 2) | red; - } - } - else { - _mesa_problem(NULL, "bad format in do_row()"); - } -} - - -/** - * Average together four rows of a source image to produce a single new - * row in the dest image. It's legal for the two source rows to point - * to the same data. The source width must be equal to either the - * dest width or two times the dest width. - * - * \param datatype GL pixel type \c GL_UNSIGNED_BYTE, \c GL_UNSIGNED_SHORT, - * \c GL_FLOAT, etc. - * \param comps number of components per pixel (1..4) - * \param srcWidth Width of a row in the source data - * \param srcRowA Pointer to one of the rows of source data - * \param srcRowB Pointer to one of the rows of source data - * \param srcRowC Pointer to one of the rows of source data - * \param srcRowD Pointer to one of the rows of source data - * \param dstWidth Width of a row in the destination data - * \param srcRowA Pointer to the row of destination data - */ -static void -do_row_3D(GLenum datatype, GLuint comps, GLint srcWidth, - const GLvoid *srcRowA, const GLvoid *srcRowB, - const GLvoid *srcRowC, const GLvoid *srcRowD, - GLint dstWidth, GLvoid *dstRow) -{ - const GLuint k0 = (srcWidth == dstWidth) ? 0 : 1; - const GLuint colStride = (srcWidth == dstWidth) ? 1 : 2; - GLuint i, j, k; - - ASSERT(comps >= 1); - ASSERT(comps <= 4); - - if ((datatype == GL_UNSIGNED_BYTE) && (comps == 4)) { - DECLARE_ROW_POINTERS(GLubyte, 4); - - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - FILTER_3D(0); - FILTER_3D(1); - FILTER_3D(2); - FILTER_3D(3); - } - } - else if ((datatype == GL_UNSIGNED_BYTE) && (comps == 3)) { - DECLARE_ROW_POINTERS(GLubyte, 3); - - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - FILTER_3D(0); - FILTER_3D(1); - FILTER_3D(2); - } - } - else if ((datatype == GL_UNSIGNED_BYTE) && (comps == 2)) { - DECLARE_ROW_POINTERS(GLubyte, 2); - - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - FILTER_3D(0); - FILTER_3D(1); - } - } - else if ((datatype == GL_UNSIGNED_BYTE) && (comps == 1)) { - DECLARE_ROW_POINTERS(GLubyte, 1); - - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - FILTER_3D(0); - } - } - else if ((datatype == GL_BYTE) && (comps == 4)) { - DECLARE_ROW_POINTERS(GLbyte, 4); - - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - FILTER_3D_SIGNED(0); - FILTER_3D_SIGNED(1); - FILTER_3D_SIGNED(2); - FILTER_3D_SIGNED(3); - } - } - else if ((datatype == GL_BYTE) && (comps == 3)) { - DECLARE_ROW_POINTERS(GLbyte, 3); - - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - FILTER_3D_SIGNED(0); - FILTER_3D_SIGNED(1); - FILTER_3D_SIGNED(2); - } - } - else if ((datatype == GL_BYTE) && (comps == 2)) { - DECLARE_ROW_POINTERS(GLbyte, 2); - - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - FILTER_3D_SIGNED(0); - FILTER_3D_SIGNED(1); - } - } - else if ((datatype == GL_BYTE) && (comps == 1)) { - DECLARE_ROW_POINTERS(GLbyte, 1); - - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - FILTER_3D_SIGNED(0); - } - } - else if ((datatype == GL_UNSIGNED_SHORT) && (comps == 4)) { - DECLARE_ROW_POINTERS(GLushort, 4); - - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - FILTER_3D(0); - FILTER_3D(1); - FILTER_3D(2); - FILTER_3D(3); - } - } - else if ((datatype == GL_UNSIGNED_SHORT) && (comps == 3)) { - DECLARE_ROW_POINTERS(GLushort, 3); - - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - FILTER_3D(0); - FILTER_3D(1); - FILTER_3D(2); - } - } - else if ((datatype == GL_UNSIGNED_SHORT) && (comps == 2)) { - DECLARE_ROW_POINTERS(GLushort, 2); - - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - FILTER_3D(0); - FILTER_3D(1); - } - } - else if ((datatype == GL_UNSIGNED_SHORT) && (comps == 1)) { - DECLARE_ROW_POINTERS(GLushort, 1); - - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - FILTER_3D(0); - } - } - else if ((datatype == GL_SHORT) && (comps == 4)) { - DECLARE_ROW_POINTERS(GLshort, 4); - - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - FILTER_3D(0); - FILTER_3D(1); - FILTER_3D(2); - FILTER_3D(3); - } - } - else if ((datatype == GL_SHORT) && (comps == 3)) { - DECLARE_ROW_POINTERS(GLshort, 3); - - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - FILTER_3D(0); - FILTER_3D(1); - FILTER_3D(2); - } - } - else if ((datatype == GL_SHORT) && (comps == 2)) { - DECLARE_ROW_POINTERS(GLshort, 2); - - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - FILTER_3D(0); - FILTER_3D(1); - } - } - else if ((datatype == GL_SHORT) && (comps == 1)) { - DECLARE_ROW_POINTERS(GLshort, 1); - - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - FILTER_3D(0); - } - } - else if ((datatype == GL_FLOAT) && (comps == 4)) { - DECLARE_ROW_POINTERS(GLfloat, 4); - - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - FILTER_F_3D(0); - FILTER_F_3D(1); - FILTER_F_3D(2); - FILTER_F_3D(3); - } - } - else if ((datatype == GL_FLOAT) && (comps == 3)) { - DECLARE_ROW_POINTERS(GLfloat, 3); - - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - FILTER_F_3D(0); - FILTER_F_3D(1); - FILTER_F_3D(2); - } - } - else if ((datatype == GL_FLOAT) && (comps == 2)) { - DECLARE_ROW_POINTERS(GLfloat, 2); - - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - FILTER_F_3D(0); - FILTER_F_3D(1); - } - } - else if ((datatype == GL_FLOAT) && (comps == 1)) { - DECLARE_ROW_POINTERS(GLfloat, 1); - - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - FILTER_F_3D(0); - } - } - else if ((datatype == GL_HALF_FLOAT_ARB) && (comps == 4)) { - DECLARE_ROW_POINTERS(GLhalfARB, 4); - - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - FILTER_HF_3D(0); - FILTER_HF_3D(1); - FILTER_HF_3D(2); - FILTER_HF_3D(3); - } - } - else if ((datatype == GL_HALF_FLOAT_ARB) && (comps == 3)) { - DECLARE_ROW_POINTERS(GLhalfARB, 4); - - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - FILTER_HF_3D(0); - FILTER_HF_3D(1); - FILTER_HF_3D(2); - } - } - else if ((datatype == GL_HALF_FLOAT_ARB) && (comps == 2)) { - DECLARE_ROW_POINTERS(GLhalfARB, 4); - - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - FILTER_HF_3D(0); - FILTER_HF_3D(1); - } - } - else if ((datatype == GL_HALF_FLOAT_ARB) && (comps == 1)) { - DECLARE_ROW_POINTERS(GLhalfARB, 4); - - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - FILTER_HF_3D(0); - } - } - else if ((datatype == GL_UNSIGNED_INT) && (comps == 1)) { - const GLuint *rowA = (const GLuint *) srcRowA; - const GLuint *rowB = (const GLuint *) srcRowB; - const GLuint *rowC = (const GLuint *) srcRowC; - const GLuint *rowD = (const GLuint *) srcRowD; - GLfloat *dst = (GLfloat *) dstRow; - - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - const uint64_t tmp = (((uint64_t) rowA[j] + (uint64_t) rowA[k]) - + ((uint64_t) rowB[j] + (uint64_t) rowB[k]) - + ((uint64_t) rowC[j] + (uint64_t) rowC[k]) - + ((uint64_t) rowD[j] + (uint64_t) rowD[k])); - dst[i] = (GLfloat)((double) tmp * 0.125); - } - } - else if ((datatype == GL_UNSIGNED_SHORT_5_6_5) && (comps == 3)) { - DECLARE_ROW_POINTERS0(GLushort); - - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - const GLint rowAr0 = rowA[j] & 0x1f; - const GLint rowAr1 = rowA[k] & 0x1f; - const GLint rowBr0 = rowB[j] & 0x1f; - const GLint rowBr1 = rowB[k] & 0x1f; - const GLint rowCr0 = rowC[j] & 0x1f; - const GLint rowCr1 = rowC[k] & 0x1f; - const GLint rowDr0 = rowD[j] & 0x1f; - const GLint rowDr1 = rowD[k] & 0x1f; - const GLint rowAg0 = (rowA[j] >> 5) & 0x3f; - const GLint rowAg1 = (rowA[k] >> 5) & 0x3f; - const GLint rowBg0 = (rowB[j] >> 5) & 0x3f; - const GLint rowBg1 = (rowB[k] >> 5) & 0x3f; - const GLint rowCg0 = (rowC[j] >> 5) & 0x3f; - const GLint rowCg1 = (rowC[k] >> 5) & 0x3f; - const GLint rowDg0 = (rowD[j] >> 5) & 0x3f; - const GLint rowDg1 = (rowD[k] >> 5) & 0x3f; - const GLint rowAb0 = (rowA[j] >> 11) & 0x1f; - const GLint rowAb1 = (rowA[k] >> 11) & 0x1f; - const GLint rowBb0 = (rowB[j] >> 11) & 0x1f; - const GLint rowBb1 = (rowB[k] >> 11) & 0x1f; - const GLint rowCb0 = (rowC[j] >> 11) & 0x1f; - const GLint rowCb1 = (rowC[k] >> 11) & 0x1f; - const GLint rowDb0 = (rowD[j] >> 11) & 0x1f; - const GLint rowDb1 = (rowD[k] >> 11) & 0x1f; - const GLint r = FILTER_SUM_3D(rowAr0, rowAr1, rowBr0, rowBr1, - rowCr0, rowCr1, rowDr0, rowDr1); - const GLint g = FILTER_SUM_3D(rowAg0, rowAg1, rowBg0, rowBg1, - rowCg0, rowCg1, rowDg0, rowDg1); - const GLint b = FILTER_SUM_3D(rowAb0, rowAb1, rowBb0, rowBb1, - rowCb0, rowCb1, rowDb0, rowDb1); - dst[i] = (b << 11) | (g << 5) | r; - } - } - else if ((datatype == GL_UNSIGNED_SHORT_4_4_4_4) && (comps == 4)) { - DECLARE_ROW_POINTERS0(GLushort); - - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - const GLint rowAr0 = rowA[j] & 0xf; - const GLint rowAr1 = rowA[k] & 0xf; - const GLint rowBr0 = rowB[j] & 0xf; - const GLint rowBr1 = rowB[k] & 0xf; - const GLint rowCr0 = rowC[j] & 0xf; - const GLint rowCr1 = rowC[k] & 0xf; - const GLint rowDr0 = rowD[j] & 0xf; - const GLint rowDr1 = rowD[k] & 0xf; - const GLint rowAg0 = (rowA[j] >> 4) & 0xf; - const GLint rowAg1 = (rowA[k] >> 4) & 0xf; - const GLint rowBg0 = (rowB[j] >> 4) & 0xf; - const GLint rowBg1 = (rowB[k] >> 4) & 0xf; - const GLint rowCg0 = (rowC[j] >> 4) & 0xf; - const GLint rowCg1 = (rowC[k] >> 4) & 0xf; - const GLint rowDg0 = (rowD[j] >> 4) & 0xf; - const GLint rowDg1 = (rowD[k] >> 4) & 0xf; - const GLint rowAb0 = (rowA[j] >> 8) & 0xf; - const GLint rowAb1 = (rowA[k] >> 8) & 0xf; - const GLint rowBb0 = (rowB[j] >> 8) & 0xf; - const GLint rowBb1 = (rowB[k] >> 8) & 0xf; - const GLint rowCb0 = (rowC[j] >> 8) & 0xf; - const GLint rowCb1 = (rowC[k] >> 8) & 0xf; - const GLint rowDb0 = (rowD[j] >> 8) & 0xf; - const GLint rowDb1 = (rowD[k] >> 8) & 0xf; - const GLint rowAa0 = (rowA[j] >> 12) & 0xf; - const GLint rowAa1 = (rowA[k] >> 12) & 0xf; - const GLint rowBa0 = (rowB[j] >> 12) & 0xf; - const GLint rowBa1 = (rowB[k] >> 12) & 0xf; - const GLint rowCa0 = (rowC[j] >> 12) & 0xf; - const GLint rowCa1 = (rowC[k] >> 12) & 0xf; - const GLint rowDa0 = (rowD[j] >> 12) & 0xf; - const GLint rowDa1 = (rowD[k] >> 12) & 0xf; - const GLint r = FILTER_SUM_3D(rowAr0, rowAr1, rowBr0, rowBr1, - rowCr0, rowCr1, rowDr0, rowDr1); - const GLint g = FILTER_SUM_3D(rowAg0, rowAg1, rowBg0, rowBg1, - rowCg0, rowCg1, rowDg0, rowDg1); - const GLint b = FILTER_SUM_3D(rowAb0, rowAb1, rowBb0, rowBb1, - rowCb0, rowCb1, rowDb0, rowDb1); - const GLint a = FILTER_SUM_3D(rowAa0, rowAa1, rowBa0, rowBa1, - rowCa0, rowCa1, rowDa0, rowDa1); - - dst[i] = (a << 12) | (b << 8) | (g << 4) | r; - } - } - else if ((datatype == GL_UNSIGNED_SHORT_1_5_5_5_REV) && (comps == 4)) { - DECLARE_ROW_POINTERS0(GLushort); - - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - const GLint rowAr0 = rowA[j] & 0x1f; - const GLint rowAr1 = rowA[k] & 0x1f; - const GLint rowBr0 = rowB[j] & 0x1f; - const GLint rowBr1 = rowB[k] & 0x1f; - const GLint rowCr0 = rowC[j] & 0x1f; - const GLint rowCr1 = rowC[k] & 0x1f; - const GLint rowDr0 = rowD[j] & 0x1f; - const GLint rowDr1 = rowD[k] & 0x1f; - const GLint rowAg0 = (rowA[j] >> 5) & 0x1f; - const GLint rowAg1 = (rowA[k] >> 5) & 0x1f; - const GLint rowBg0 = (rowB[j] >> 5) & 0x1f; - const GLint rowBg1 = (rowB[k] >> 5) & 0x1f; - const GLint rowCg0 = (rowC[j] >> 5) & 0x1f; - const GLint rowCg1 = (rowC[k] >> 5) & 0x1f; - const GLint rowDg0 = (rowD[j] >> 5) & 0x1f; - const GLint rowDg1 = (rowD[k] >> 5) & 0x1f; - const GLint rowAb0 = (rowA[j] >> 10) & 0x1f; - const GLint rowAb1 = (rowA[k] >> 10) & 0x1f; - const GLint rowBb0 = (rowB[j] >> 10) & 0x1f; - const GLint rowBb1 = (rowB[k] >> 10) & 0x1f; - const GLint rowCb0 = (rowC[j] >> 10) & 0x1f; - const GLint rowCb1 = (rowC[k] >> 10) & 0x1f; - const GLint rowDb0 = (rowD[j] >> 10) & 0x1f; - const GLint rowDb1 = (rowD[k] >> 10) & 0x1f; - const GLint rowAa0 = (rowA[j] >> 15) & 0x1; - const GLint rowAa1 = (rowA[k] >> 15) & 0x1; - const GLint rowBa0 = (rowB[j] >> 15) & 0x1; - const GLint rowBa1 = (rowB[k] >> 15) & 0x1; - const GLint rowCa0 = (rowC[j] >> 15) & 0x1; - const GLint rowCa1 = (rowC[k] >> 15) & 0x1; - const GLint rowDa0 = (rowD[j] >> 15) & 0x1; - const GLint rowDa1 = (rowD[k] >> 15) & 0x1; - const GLint r = FILTER_SUM_3D(rowAr0, rowAr1, rowBr0, rowBr1, - rowCr0, rowCr1, rowDr0, rowDr1); - const GLint g = FILTER_SUM_3D(rowAg0, rowAg1, rowBg0, rowBg1, - rowCg0, rowCg1, rowDg0, rowDg1); - const GLint b = FILTER_SUM_3D(rowAb0, rowAb1, rowBb0, rowBb1, - rowCb0, rowCb1, rowDb0, rowDb1); - const GLint a = FILTER_SUM_3D(rowAa0, rowAa1, rowBa0, rowBa1, - rowCa0, rowCa1, rowDa0, rowDa1); - - dst[i] = (a << 15) | (b << 10) | (g << 5) | r; - } - } - else if ((datatype == GL_UNSIGNED_SHORT_5_5_5_1) && (comps == 4)) { - DECLARE_ROW_POINTERS0(GLushort); - - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - const GLint rowAr0 = (rowA[j] >> 11) & 0x1f; - const GLint rowAr1 = (rowA[k] >> 11) & 0x1f; - const GLint rowBr0 = (rowB[j] >> 11) & 0x1f; - const GLint rowBr1 = (rowB[k] >> 11) & 0x1f; - const GLint rowCr0 = (rowC[j] >> 11) & 0x1f; - const GLint rowCr1 = (rowC[k] >> 11) & 0x1f; - const GLint rowDr0 = (rowD[j] >> 11) & 0x1f; - const GLint rowDr1 = (rowD[k] >> 11) & 0x1f; - const GLint rowAg0 = (rowA[j] >> 6) & 0x1f; - const GLint rowAg1 = (rowA[k] >> 6) & 0x1f; - const GLint rowBg0 = (rowB[j] >> 6) & 0x1f; - const GLint rowBg1 = (rowB[k] >> 6) & 0x1f; - const GLint rowCg0 = (rowC[j] >> 6) & 0x1f; - const GLint rowCg1 = (rowC[k] >> 6) & 0x1f; - const GLint rowDg0 = (rowD[j] >> 6) & 0x1f; - const GLint rowDg1 = (rowD[k] >> 6) & 0x1f; - const GLint rowAb0 = (rowA[j] >> 1) & 0x1f; - const GLint rowAb1 = (rowA[k] >> 1) & 0x1f; - const GLint rowBb0 = (rowB[j] >> 1) & 0x1f; - const GLint rowBb1 = (rowB[k] >> 1) & 0x1f; - const GLint rowCb0 = (rowC[j] >> 1) & 0x1f; - const GLint rowCb1 = (rowC[k] >> 1) & 0x1f; - const GLint rowDb0 = (rowD[j] >> 1) & 0x1f; - const GLint rowDb1 = (rowD[k] >> 1) & 0x1f; - const GLint rowAa0 = (rowA[j] & 0x1); - const GLint rowAa1 = (rowA[k] & 0x1); - const GLint rowBa0 = (rowB[j] & 0x1); - const GLint rowBa1 = (rowB[k] & 0x1); - const GLint rowCa0 = (rowC[j] & 0x1); - const GLint rowCa1 = (rowC[k] & 0x1); - const GLint rowDa0 = (rowD[j] & 0x1); - const GLint rowDa1 = (rowD[k] & 0x1); - const GLint r = FILTER_SUM_3D(rowAr0, rowAr1, rowBr0, rowBr1, - rowCr0, rowCr1, rowDr0, rowDr1); - const GLint g = FILTER_SUM_3D(rowAg0, rowAg1, rowBg0, rowBg1, - rowCg0, rowCg1, rowDg0, rowDg1); - const GLint b = FILTER_SUM_3D(rowAb0, rowAb1, rowBb0, rowBb1, - rowCb0, rowCb1, rowDb0, rowDb1); - const GLint a = FILTER_SUM_3D(rowAa0, rowAa1, rowBa0, rowBa1, - rowCa0, rowCa1, rowDa0, rowDa1); - - dst[i] = (r << 11) | (g << 6) | (b << 1) | a; - } - } - else if ((datatype == GL_UNSIGNED_BYTE_3_3_2) && (comps == 3)) { - DECLARE_ROW_POINTERS0(GLushort); - - for (i = j = 0, k = k0; i < (GLuint) dstWidth; - i++, j += colStride, k += colStride) { - const GLint rowAr0 = rowA[j] & 0x3; - const GLint rowAr1 = rowA[k] & 0x3; - const GLint rowBr0 = rowB[j] & 0x3; - const GLint rowBr1 = rowB[k] & 0x3; - const GLint rowCr0 = rowC[j] & 0x3; - const GLint rowCr1 = rowC[k] & 0x3; - const GLint rowDr0 = rowD[j] & 0x3; - const GLint rowDr1 = rowD[k] & 0x3; - const GLint rowAg0 = (rowA[j] >> 2) & 0x7; - const GLint rowAg1 = (rowA[k] >> 2) & 0x7; - const GLint rowBg0 = (rowB[j] >> 2) & 0x7; - const GLint rowBg1 = (rowB[k] >> 2) & 0x7; - const GLint rowCg0 = (rowC[j] >> 2) & 0x7; - const GLint rowCg1 = (rowC[k] >> 2) & 0x7; - const GLint rowDg0 = (rowD[j] >> 2) & 0x7; - const GLint rowDg1 = (rowD[k] >> 2) & 0x7; - const GLint rowAb0 = (rowA[j] >> 5) & 0x7; - const GLint rowAb1 = (rowA[k] >> 5) & 0x7; - const GLint rowBb0 = (rowB[j] >> 5) & 0x7; - const GLint rowBb1 = (rowB[k] >> 5) & 0x7; - const GLint rowCb0 = (rowC[j] >> 5) & 0x7; - const GLint rowCb1 = (rowC[k] >> 5) & 0x7; - const GLint rowDb0 = (rowD[j] >> 5) & 0x7; - const GLint rowDb1 = (rowD[k] >> 5) & 0x7; - const GLint r = FILTER_SUM_3D(rowAr0, rowAr1, rowBr0, rowBr1, - rowCr0, rowCr1, rowDr0, rowDr1); - const GLint g = FILTER_SUM_3D(rowAg0, rowAg1, rowBg0, rowBg1, - rowCg0, rowCg1, rowDg0, rowDg1); - const GLint b = FILTER_SUM_3D(rowAb0, rowAb1, rowBb0, rowBb1, - rowCb0, rowCb1, rowDb0, rowDb1); - dst[i] = (b << 5) | (g << 2) | r; - } - } - else { - _mesa_problem(NULL, "bad format in do_row()"); - } -} - - -/* - * These functions generate a 1/2-size mipmap image from a source image. - * Texture borders are handled by copying or averaging the source image's - * border texels, depending on the scale-down factor. - */ - -static void -make_1d_mipmap(GLenum datatype, GLuint comps, GLint border, - GLint srcWidth, const GLubyte *srcPtr, - GLint dstWidth, GLubyte *dstPtr) -{ - const GLint bpt = bytes_per_pixel(datatype, comps); - const GLubyte *src; - GLubyte *dst; - - /* skip the border pixel, if any */ - src = srcPtr + border * bpt; - dst = dstPtr + border * bpt; - - /* we just duplicate the input row, kind of hack, saves code */ - do_row(datatype, comps, srcWidth - 2 * border, src, src, - dstWidth - 2 * border, dst); - - if (border) { - /* copy left-most pixel from source */ - assert(dstPtr); - assert(srcPtr); - memcpy(dstPtr, srcPtr, bpt); - /* copy right-most pixel from source */ - memcpy(dstPtr + (dstWidth - 1) * bpt, - srcPtr + (srcWidth - 1) * bpt, - bpt); - } -} - - -static void -make_2d_mipmap(GLenum datatype, GLuint comps, GLint border, - GLint srcWidth, GLint srcHeight, - const GLubyte *srcPtr, GLint srcRowStride, - GLint dstWidth, GLint dstHeight, - GLubyte *dstPtr, GLint dstRowStride) -{ - const GLint bpt = bytes_per_pixel(datatype, comps); - const GLint srcWidthNB = srcWidth - 2 * border; /* sizes w/out border */ - const GLint dstWidthNB = dstWidth - 2 * border; - const GLint dstHeightNB = dstHeight - 2 * border; - const GLint srcRowBytes = bpt * srcRowStride; - const GLint dstRowBytes = bpt * dstRowStride; - const GLubyte *srcA, *srcB; - GLubyte *dst; - GLint row, srcRowStep; - - /* Compute src and dst pointers, skipping any border */ - srcA = srcPtr + border * ((srcWidth + 1) * bpt); - if (srcHeight > 1 && srcHeight > dstHeight) { - /* sample from two source rows */ - srcB = srcA + srcRowBytes; - srcRowStep = 2; - } - else { - /* sample from one source row */ - srcB = srcA; - srcRowStep = 1; - } - - dst = dstPtr + border * ((dstWidth + 1) * bpt); - - for (row = 0; row < dstHeightNB; row++) { - do_row(datatype, comps, srcWidthNB, srcA, srcB, - dstWidthNB, dst); - srcA += srcRowStep * srcRowBytes; - srcB += srcRowStep * srcRowBytes; - dst += dstRowBytes; - } - - /* This is ugly but probably won't be used much */ - if (border > 0) { - /* fill in dest border */ - /* lower-left border pixel */ - assert(dstPtr); - assert(srcPtr); - memcpy(dstPtr, srcPtr, bpt); - /* lower-right border pixel */ - memcpy(dstPtr + (dstWidth - 1) * bpt, - srcPtr + (srcWidth - 1) * bpt, bpt); - /* upper-left border pixel */ - memcpy(dstPtr + dstWidth * (dstHeight - 1) * bpt, - srcPtr + srcWidth * (srcHeight - 1) * bpt, bpt); - /* upper-right border pixel */ - memcpy(dstPtr + (dstWidth * dstHeight - 1) * bpt, - srcPtr + (srcWidth * srcHeight - 1) * bpt, bpt); - /* lower border */ - do_row(datatype, comps, srcWidthNB, - srcPtr + bpt, - srcPtr + bpt, - dstWidthNB, dstPtr + bpt); - /* upper border */ - do_row(datatype, comps, srcWidthNB, - srcPtr + (srcWidth * (srcHeight - 1) + 1) * bpt, - srcPtr + (srcWidth * (srcHeight - 1) + 1) * bpt, - dstWidthNB, - dstPtr + (dstWidth * (dstHeight - 1) + 1) * bpt); - /* left and right borders */ - if (srcHeight == dstHeight) { - /* copy border pixel from src to dst */ - for (row = 1; row < srcHeight; row++) { - memcpy(dstPtr + dstWidth * row * bpt, - srcPtr + srcWidth * row * bpt, bpt); - memcpy(dstPtr + (dstWidth * row + dstWidth - 1) * bpt, - srcPtr + (srcWidth * row + srcWidth - 1) * bpt, bpt); - } - } - else { - /* average two src pixels each dest pixel */ - for (row = 0; row < dstHeightNB; row += 2) { - do_row(datatype, comps, 1, - srcPtr + (srcWidth * (row * 2 + 1)) * bpt, - srcPtr + (srcWidth * (row * 2 + 2)) * bpt, - 1, dstPtr + (dstWidth * row + 1) * bpt); - do_row(datatype, comps, 1, - srcPtr + (srcWidth * (row * 2 + 1) + srcWidth - 1) * bpt, - srcPtr + (srcWidth * (row * 2 + 2) + srcWidth - 1) * bpt, - 1, dstPtr + (dstWidth * row + 1 + dstWidth - 1) * bpt); - } - } - } -} - - -static void -make_3d_mipmap(GLenum datatype, GLuint comps, GLint border, - GLint srcWidth, GLint srcHeight, GLint srcDepth, - const GLubyte *srcPtr, GLint srcRowStride, - GLint dstWidth, GLint dstHeight, GLint dstDepth, - GLubyte *dstPtr, GLint dstRowStride) -{ - const GLint bpt = bytes_per_pixel(datatype, comps); - const GLint srcWidthNB = srcWidth - 2 * border; /* sizes w/out border */ - const GLint srcDepthNB = srcDepth - 2 * border; - const GLint dstWidthNB = dstWidth - 2 * border; - const GLint dstHeightNB = dstHeight - 2 * border; - const GLint dstDepthNB = dstDepth - 2 * border; - GLint img, row; - GLint bytesPerSrcImage, bytesPerDstImage; - GLint bytesPerSrcRow, bytesPerDstRow; - GLint srcImageOffset, srcRowOffset; - - (void) srcDepthNB; /* silence warnings */ - - - bytesPerSrcImage = srcWidth * srcHeight * bpt; - bytesPerDstImage = dstWidth * dstHeight * bpt; - - bytesPerSrcRow = srcWidth * bpt; - bytesPerDstRow = dstWidth * bpt; - - /* Offset between adjacent src images to be averaged together */ - srcImageOffset = (srcDepth == dstDepth) ? 0 : bytesPerSrcImage; - - /* Offset between adjacent src rows to be averaged together */ - srcRowOffset = (srcHeight == dstHeight) ? 0 : srcWidth * bpt; - - /* - * Need to average together up to 8 src pixels for each dest pixel. - * Break that down into 3 operations: - * 1. take two rows from source image and average them together. - * 2. take two rows from next source image and average them together. - * 3. take the two averaged rows and average them for the final dst row. - */ - - /* - printf("mip3d %d x %d x %d -> %d x %d x %d\n", - srcWidth, srcHeight, srcDepth, dstWidth, dstHeight, dstDepth); - */ - - for (img = 0; img < dstDepthNB; img++) { - /* first source image pointer, skipping border */ - const GLubyte *imgSrcA = srcPtr - + (bytesPerSrcImage + bytesPerSrcRow + border) * bpt * border - + img * (bytesPerSrcImage + srcImageOffset); - /* second source image pointer, skipping border */ - const GLubyte *imgSrcB = imgSrcA + srcImageOffset; - /* address of the dest image, skipping border */ - GLubyte *imgDst = dstPtr - + (bytesPerDstImage + bytesPerDstRow + border) * bpt * border - + img * bytesPerDstImage; - - /* setup the four source row pointers and the dest row pointer */ - const GLubyte *srcImgARowA = imgSrcA; - const GLubyte *srcImgARowB = imgSrcA + srcRowOffset; - const GLubyte *srcImgBRowA = imgSrcB; - const GLubyte *srcImgBRowB = imgSrcB + srcRowOffset; - GLubyte *dstImgRow = imgDst; - - for (row = 0; row < dstHeightNB; row++) { - do_row_3D(datatype, comps, srcWidthNB, - srcImgARowA, srcImgARowB, - srcImgBRowA, srcImgBRowB, - dstWidthNB, dstImgRow); - - /* advance to next rows */ - srcImgARowA += bytesPerSrcRow + srcRowOffset; - srcImgARowB += bytesPerSrcRow + srcRowOffset; - srcImgBRowA += bytesPerSrcRow + srcRowOffset; - srcImgBRowB += bytesPerSrcRow + srcRowOffset; - dstImgRow += bytesPerDstRow; - } - } - - - /* Luckily we can leverage the make_2d_mipmap() function here! */ - if (border > 0) { - /* do front border image */ - make_2d_mipmap(datatype, comps, 1, srcWidth, srcHeight, srcPtr, srcRowStride, - dstWidth, dstHeight, dstPtr, dstRowStride); - /* do back border image */ - make_2d_mipmap(datatype, comps, 1, srcWidth, srcHeight, - srcPtr + bytesPerSrcImage * (srcDepth - 1), srcRowStride, - dstWidth, dstHeight, - dstPtr + bytesPerDstImage * (dstDepth - 1), dstRowStride); - /* do four remaining border edges that span the image slices */ - if (srcDepth == dstDepth) { - /* just copy border pixels from src to dst */ - for (img = 0; img < dstDepthNB; img++) { - const GLubyte *src; - GLubyte *dst; - - /* do border along [img][row=0][col=0] */ - src = srcPtr + (img + 1) * bytesPerSrcImage; - dst = dstPtr + (img + 1) * bytesPerDstImage; - memcpy(dst, src, bpt); - - /* do border along [img][row=dstHeight-1][col=0] */ - src = srcPtr + (img * 2 + 1) * bytesPerSrcImage - + (srcHeight - 1) * bytesPerSrcRow; - dst = dstPtr + (img + 1) * bytesPerDstImage - + (dstHeight - 1) * bytesPerDstRow; - memcpy(dst, src, bpt); - - /* do border along [img][row=0][col=dstWidth-1] */ - src = srcPtr + (img * 2 + 1) * bytesPerSrcImage - + (srcWidth - 1) * bpt; - dst = dstPtr + (img + 1) * bytesPerDstImage - + (dstWidth - 1) * bpt; - memcpy(dst, src, bpt); - - /* do border along [img][row=dstHeight-1][col=dstWidth-1] */ - src = srcPtr + (img * 2 + 1) * bytesPerSrcImage - + (bytesPerSrcImage - bpt); - dst = dstPtr + (img + 1) * bytesPerDstImage - + (bytesPerDstImage - bpt); - memcpy(dst, src, bpt); - } - } - else { - /* average border pixels from adjacent src image pairs */ - ASSERT(srcDepthNB == 2 * dstDepthNB); - for (img = 0; img < dstDepthNB; img++) { - const GLubyte *src; - GLubyte *dst; - - /* do border along [img][row=0][col=0] */ - src = srcPtr + (img * 2 + 1) * bytesPerSrcImage; - dst = dstPtr + (img + 1) * bytesPerDstImage; - do_row(datatype, comps, 1, src, src + srcImageOffset, 1, dst); - - /* do border along [img][row=dstHeight-1][col=0] */ - src = srcPtr + (img * 2 + 1) * bytesPerSrcImage - + (srcHeight - 1) * bytesPerSrcRow; - dst = dstPtr + (img + 1) * bytesPerDstImage - + (dstHeight - 1) * bytesPerDstRow; - do_row(datatype, comps, 1, src, src + srcImageOffset, 1, dst); - - /* do border along [img][row=0][col=dstWidth-1] */ - src = srcPtr + (img * 2 + 1) * bytesPerSrcImage - + (srcWidth - 1) * bpt; - dst = dstPtr + (img + 1) * bytesPerDstImage - + (dstWidth - 1) * bpt; - do_row(datatype, comps, 1, src, src + srcImageOffset, 1, dst); - - /* do border along [img][row=dstHeight-1][col=dstWidth-1] */ - src = srcPtr + (img * 2 + 1) * bytesPerSrcImage - + (bytesPerSrcImage - bpt); - dst = dstPtr + (img + 1) * bytesPerDstImage - + (bytesPerDstImage - bpt); - do_row(datatype, comps, 1, src, src + srcImageOffset, 1, dst); - } - } - } -} - - -static void -make_1d_stack_mipmap(GLenum datatype, GLuint comps, GLint border, - GLint srcWidth, const GLubyte *srcPtr, GLuint srcRowStride, - GLint dstWidth, GLint dstHeight, - GLubyte *dstPtr, GLuint dstRowStride ) -{ - const GLint bpt = bytes_per_pixel(datatype, comps); - const GLint srcWidthNB = srcWidth - 2 * border; /* sizes w/out border */ - const GLint dstWidthNB = dstWidth - 2 * border; - const GLint dstHeightNB = dstHeight - 2 * border; - const GLint srcRowBytes = bpt * srcRowStride; - const GLint dstRowBytes = bpt * dstRowStride; - const GLubyte *src; - GLubyte *dst; - GLint row; - - /* Compute src and dst pointers, skipping any border */ - src = srcPtr + border * ((srcWidth + 1) * bpt); - dst = dstPtr + border * ((dstWidth + 1) * bpt); - - for (row = 0; row < dstHeightNB; row++) { - do_row(datatype, comps, srcWidthNB, src, src, - dstWidthNB, dst); - src += srcRowBytes; - dst += dstRowBytes; - } - - if (border) { - /* copy left-most pixel from source */ - assert(dstPtr); - assert(srcPtr); - memcpy(dstPtr, srcPtr, bpt); - /* copy right-most pixel from source */ - memcpy(dstPtr + (dstWidth - 1) * bpt, - srcPtr + (srcWidth - 1) * bpt, - bpt); - } -} - - -/** - * \bug - * There is quite a bit of refactoring that could be done with this function - * and \c make_2d_mipmap. - */ -static void -make_2d_stack_mipmap(GLenum datatype, GLuint comps, GLint border, - GLint srcWidth, GLint srcHeight, - const GLubyte *srcPtr, GLint srcRowStride, - GLint dstWidth, GLint dstHeight, GLint dstDepth, - GLubyte *dstPtr, GLint dstRowStride) -{ - const GLint bpt = bytes_per_pixel(datatype, comps); - const GLint srcWidthNB = srcWidth - 2 * border; /* sizes w/out border */ - const GLint dstWidthNB = dstWidth - 2 * border; - const GLint dstHeightNB = dstHeight - 2 * border; - const GLint dstDepthNB = dstDepth - 2 * border; - const GLint srcRowBytes = bpt * srcRowStride; - const GLint dstRowBytes = bpt * dstRowStride; - const GLubyte *srcA, *srcB; - GLubyte *dst; - GLint layer; - GLint row; - - /* Compute src and dst pointers, skipping any border */ - srcA = srcPtr + border * ((srcWidth + 1) * bpt); - if (srcHeight > 1) - srcB = srcA + srcRowBytes; - else - srcB = srcA; - dst = dstPtr + border * ((dstWidth + 1) * bpt); - - for (layer = 0; layer < dstDepthNB; layer++) { - for (row = 0; row < dstHeightNB; row++) { - do_row(datatype, comps, srcWidthNB, srcA, srcB, - dstWidthNB, dst); - srcA += 2 * srcRowBytes; - srcB += 2 * srcRowBytes; - dst += dstRowBytes; - } - - /* This is ugly but probably won't be used much */ - if (border > 0) { - /* fill in dest border */ - /* lower-left border pixel */ - assert(dstPtr); - assert(srcPtr); - memcpy(dstPtr, srcPtr, bpt); - /* lower-right border pixel */ - memcpy(dstPtr + (dstWidth - 1) * bpt, - srcPtr + (srcWidth - 1) * bpt, bpt); - /* upper-left border pixel */ - memcpy(dstPtr + dstWidth * (dstHeight - 1) * bpt, - srcPtr + srcWidth * (srcHeight - 1) * bpt, bpt); - /* upper-right border pixel */ - memcpy(dstPtr + (dstWidth * dstHeight - 1) * bpt, - srcPtr + (srcWidth * srcHeight - 1) * bpt, bpt); - /* lower border */ - do_row(datatype, comps, srcWidthNB, - srcPtr + bpt, - srcPtr + bpt, - dstWidthNB, dstPtr + bpt); - /* upper border */ - do_row(datatype, comps, srcWidthNB, - srcPtr + (srcWidth * (srcHeight - 1) + 1) * bpt, - srcPtr + (srcWidth * (srcHeight - 1) + 1) * bpt, - dstWidthNB, - dstPtr + (dstWidth * (dstHeight - 1) + 1) * bpt); - /* left and right borders */ - if (srcHeight == dstHeight) { - /* copy border pixel from src to dst */ - for (row = 1; row < srcHeight; row++) { - memcpy(dstPtr + dstWidth * row * bpt, - srcPtr + srcWidth * row * bpt, bpt); - memcpy(dstPtr + (dstWidth * row + dstWidth - 1) * bpt, - srcPtr + (srcWidth * row + srcWidth - 1) * bpt, bpt); - } - } - else { - /* average two src pixels each dest pixel */ - for (row = 0; row < dstHeightNB; row += 2) { - do_row(datatype, comps, 1, - srcPtr + (srcWidth * (row * 2 + 1)) * bpt, - srcPtr + (srcWidth * (row * 2 + 2)) * bpt, - 1, dstPtr + (dstWidth * row + 1) * bpt); - do_row(datatype, comps, 1, - srcPtr + (srcWidth * (row * 2 + 1) + srcWidth - 1) * bpt, - srcPtr + (srcWidth * (row * 2 + 2) + srcWidth - 1) * bpt, - 1, dstPtr + (dstWidth * row + 1 + dstWidth - 1) * bpt); - } - } - } - } -} - - -/** - * Down-sample a texture image to produce the next lower mipmap level. - * \param comps components per texel (1, 2, 3 or 4) - * \param srcRowStride stride between source rows, in texels - * \param dstRowStride stride between destination rows, in texels - */ -void -_mesa_generate_mipmap_level(GLenum target, - GLenum datatype, GLuint comps, - GLint border, - GLint srcWidth, GLint srcHeight, GLint srcDepth, - const GLubyte *srcData, - GLint srcRowStride, - GLint dstWidth, GLint dstHeight, GLint dstDepth, - GLubyte *dstData, - GLint dstRowStride) -{ - /* - * We use simple 2x2 averaging to compute the next mipmap level. - */ - switch (target) { - case GL_TEXTURE_1D: - make_1d_mipmap(datatype, comps, border, - srcWidth, srcData, - dstWidth, dstData); - break; - case GL_TEXTURE_2D: - case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB: - case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB: - case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB: - case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB: - case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB: - case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB: - make_2d_mipmap(datatype, comps, border, - srcWidth, srcHeight, srcData, srcRowStride, - dstWidth, dstHeight, dstData, dstRowStride); - break; - case GL_TEXTURE_3D: - make_3d_mipmap(datatype, comps, border, - srcWidth, srcHeight, srcDepth, - srcData, srcRowStride, - dstWidth, dstHeight, dstDepth, - dstData, dstRowStride); - break; - case GL_TEXTURE_1D_ARRAY_EXT: - make_1d_stack_mipmap(datatype, comps, border, - srcWidth, srcData, srcRowStride, - dstWidth, dstHeight, - dstData, dstRowStride); - break; - case GL_TEXTURE_2D_ARRAY_EXT: - make_2d_stack_mipmap(datatype, comps, border, - srcWidth, srcHeight, - srcData, srcRowStride, - dstWidth, dstHeight, - dstDepth, dstData, dstRowStride); - break; - case GL_TEXTURE_RECTANGLE_NV: - /* no mipmaps, do nothing */ - break; - default: - _mesa_problem(NULL, "bad dimensions in _mesa_generate_mipmaps"); - return; - } -} - - -/** - * compute next (level+1) image size - * \return GL_FALSE if no smaller size can be generated (eg. src is 1x1x1 size) - */ -static GLboolean -next_mipmap_level_size(GLenum target, GLint border, - GLint srcWidth, GLint srcHeight, GLint srcDepth, - GLint *dstWidth, GLint *dstHeight, GLint *dstDepth) -{ - if (srcWidth - 2 * border > 1) { - *dstWidth = (srcWidth - 2 * border) / 2 + 2 * border; - } - else { - *dstWidth = srcWidth; /* can't go smaller */ - } - - if ((srcHeight - 2 * border > 1) && - (target != GL_TEXTURE_1D_ARRAY_EXT)) { - *dstHeight = (srcHeight - 2 * border) / 2 + 2 * border; - } - else { - *dstHeight = srcHeight; /* can't go smaller */ - } - - if ((srcDepth - 2 * border > 1) && - (target != GL_TEXTURE_2D_ARRAY_EXT)) { - *dstDepth = (srcDepth - 2 * border) / 2 + 2 * border; - } - else { - *dstDepth = srcDepth; /* can't go smaller */ - } - - if (*dstWidth == srcWidth && - *dstHeight == srcHeight && - *dstDepth == srcDepth) { - return GL_FALSE; - } - else { - return GL_TRUE; - } -} - - - - -/** - * Automatic mipmap generation. - * This is the fallback/default function for ctx->Driver.GenerateMipmap(). - * Generate a complete set of mipmaps from texObj's BaseLevel image. - * Stop at texObj's MaxLevel or when we get to the 1x1 texture. - * For cube maps, target will be one of - * GL_TEXTURE_CUBE_MAP_POSITIVE/NEGATIVE_X/Y/Z; never GL_TEXTURE_CUBE_MAP. - */ -void -_mesa_generate_mipmap(struct gl_context *ctx, GLenum target, - struct gl_texture_object *texObj) -{ - const struct gl_texture_image *srcImage; - gl_format convertFormat; - const GLubyte *srcData = NULL; - GLubyte *dstData = NULL; - GLint level, maxLevels; - GLenum datatype; - GLuint comps; - - ASSERT(texObj); - srcImage = _mesa_select_tex_image(ctx, texObj, target, texObj->BaseLevel); - ASSERT(srcImage); - - maxLevels = _mesa_max_texture_levels(ctx, texObj->Target); - ASSERT(maxLevels > 0); /* bad target */ - - /* Find convertFormat - the format that do_row() will process */ - - if (_mesa_is_format_compressed(srcImage->TexFormat)) { - /* setup for compressed textures - need to allocate temporary - * image buffers to hold uncompressed images. - */ - GLuint row; - GLint components, size; - GLchan *dst; - - assert(texObj->Target == GL_TEXTURE_2D || - texObj->Target == GL_TEXTURE_CUBE_MAP_ARB); - - if (srcImage->_BaseFormat == GL_RGB) { - convertFormat = MESA_FORMAT_RGB888; - components = 3; - } - else if (srcImage->_BaseFormat == GL_RGBA) { - convertFormat = MESA_FORMAT_RGBA8888; - components = 4; - } - else { - _mesa_problem(ctx, "bad srcImage->_BaseFormat in _mesa_generate_mipmaps"); - return; - } - - /* allocate storage for uncompressed GL_RGB or GL_RGBA images */ - size = _mesa_bytes_per_pixel(srcImage->_BaseFormat, CHAN_TYPE) - * srcImage->Width * srcImage->Height * srcImage->Depth + 20; - /* 20 extra bytes, just be safe when calling last FetchTexel */ - srcData = (GLubyte *) malloc(size); - if (!srcData) { - _mesa_error(ctx, GL_OUT_OF_MEMORY, "generate mipmaps"); - return; - } - dstData = (GLubyte *) malloc(size / 2); /* 1/4 would probably be OK */ - if (!dstData) { - _mesa_error(ctx, GL_OUT_OF_MEMORY, "generate mipmaps"); - free((void *) srcData); - return; - } - - /* decompress base image here */ - dst = (GLchan *) srcData; - for (row = 0; row < srcImage->Height; row++) { - GLuint col; - for (col = 0; col < srcImage->Width; col++) { - srcImage->FetchTexelc(srcImage, col, row, 0, dst); - dst += components; - } - } - } - else { - /* uncompressed */ - convertFormat = srcImage->TexFormat; - } - - _mesa_format_to_type_and_comps(convertFormat, &datatype, &comps); - - for (level = texObj->BaseLevel; level < texObj->MaxLevel - && level < maxLevels - 1; level++) { - /* generate image[level+1] from image[level] */ - const struct gl_texture_image *srcImage; - struct gl_texture_image *dstImage; - GLint srcWidth, srcHeight, srcDepth; - GLint dstWidth, dstHeight, dstDepth; - GLint border; - GLboolean nextLevel; - - /* get src image parameters */ - srcImage = _mesa_select_tex_image(ctx, texObj, target, level); - ASSERT(srcImage); - srcWidth = srcImage->Width; - srcHeight = srcImage->Height; - srcDepth = srcImage->Depth; - border = srcImage->Border; - - nextLevel = next_mipmap_level_size(target, border, - srcWidth, srcHeight, srcDepth, - &dstWidth, &dstHeight, &dstDepth); - if (!nextLevel) { - /* all done */ - if (_mesa_is_format_compressed(srcImage->TexFormat)) { - free((void *) srcData); - free(dstData); - } - return; - } - - /* get dest gl_texture_image */ - dstImage = _mesa_get_tex_image(ctx, texObj, target, level + 1); - if (!dstImage) { - _mesa_error(ctx, GL_OUT_OF_MEMORY, "generating mipmaps"); - return; - } - - /* Free old image data */ - if (dstImage->Data) - ctx->Driver.FreeTexImageData(ctx, dstImage); - - /* initialize new image */ - _mesa_init_teximage_fields(ctx, target, dstImage, dstWidth, dstHeight, - dstDepth, border, srcImage->InternalFormat, - srcImage->TexFormat); - dstImage->DriverData = NULL; - dstImage->FetchTexelc = srcImage->FetchTexelc; - dstImage->FetchTexelf = srcImage->FetchTexelf; - - /* Alloc new teximage data buffer */ - { - GLuint size = _mesa_format_image_size(dstImage->TexFormat, - dstWidth, dstHeight, dstDepth); - dstImage->Data = _mesa_alloc_texmemory(size); - if (!dstImage->Data) { - _mesa_error(ctx, GL_OUT_OF_MEMORY, "generating mipmaps"); - return; - } - } - - /* Setup src and dest data pointers */ - if (_mesa_is_format_compressed(dstImage->TexFormat)) { - /* srcData and dstData are already set */ - ASSERT(srcData); - ASSERT(dstData); - } - else { - srcData = (const GLubyte *) srcImage->Data; - dstData = (GLubyte *) dstImage->Data; - } - - ASSERT(dstImage->TexFormat); - ASSERT(dstImage->FetchTexelc); - ASSERT(dstImage->FetchTexelf); - - _mesa_generate_mipmap_level(target, datatype, comps, border, - srcWidth, srcHeight, srcDepth, - srcData, srcImage->RowStride, - dstWidth, dstHeight, dstDepth, - dstData, dstImage->RowStride); - - - if (_mesa_is_format_compressed(dstImage->TexFormat)) { - GLubyte *temp; - /* compress image from dstData into dstImage->Data */ - const GLenum srcFormat = _mesa_get_format_base_format(convertFormat); - GLint dstRowStride - = _mesa_format_row_stride(dstImage->TexFormat, dstWidth); - ASSERT(srcFormat == GL_RGB || srcFormat == GL_RGBA); - - _mesa_texstore(ctx, 2, dstImage->_BaseFormat, - dstImage->TexFormat, - dstImage->Data, - 0, 0, 0, /* dstX/Y/Zoffset */ - dstRowStride, 0, /* strides */ - dstWidth, dstHeight, 1, /* size */ - srcFormat, CHAN_TYPE, - dstData, /* src data, actually */ - &ctx->DefaultPacking); - - /* swap src and dest pointers */ - temp = (GLubyte *) srcData; - srcData = dstData; - dstData = temp; - } - - } /* loop over mipmap levels */ -} - - -/** - * Helper function for drivers which need to rescale texture images to - * certain aspect ratios. - * Nearest filtering only (for broken hardware that can't support - * all aspect ratios). This can be made a lot faster, but I don't - * really care enough... - */ -void -_mesa_rescale_teximage2d(GLuint bytesPerPixel, - GLuint srcStrideInPixels, - GLuint dstRowStride, - GLint srcWidth, GLint srcHeight, - GLint dstWidth, GLint dstHeight, - const GLvoid *srcImage, GLvoid *dstImage) -{ - GLint row, col; - -#define INNER_LOOP( TYPE, HOP, WOP ) \ - for ( row = 0 ; row < dstHeight ; row++ ) { \ - GLint srcRow = row HOP hScale; \ - for ( col = 0 ; col < dstWidth ; col++ ) { \ - GLint srcCol = col WOP wScale; \ - dst[col] = src[srcRow * srcStrideInPixels + srcCol]; \ - } \ - dst = (TYPE *) ((GLubyte *) dst + dstRowStride); \ - } \ - -#define RESCALE_IMAGE( TYPE ) \ -do { \ - const TYPE *src = (const TYPE *)srcImage; \ - TYPE *dst = (TYPE *)dstImage; \ - \ - if ( srcHeight < dstHeight ) { \ - const GLint hScale = dstHeight / srcHeight; \ - if ( srcWidth < dstWidth ) { \ - const GLint wScale = dstWidth / srcWidth; \ - INNER_LOOP( TYPE, /, / ); \ - } \ - else { \ - const GLint wScale = srcWidth / dstWidth; \ - INNER_LOOP( TYPE, /, * ); \ - } \ - } \ - else { \ - const GLint hScale = srcHeight / dstHeight; \ - if ( srcWidth < dstWidth ) { \ - const GLint wScale = dstWidth / srcWidth; \ - INNER_LOOP( TYPE, *, / ); \ - } \ - else { \ - const GLint wScale = srcWidth / dstWidth; \ - INNER_LOOP( TYPE, *, * ); \ - } \ - } \ -} while (0) - - switch ( bytesPerPixel ) { - case 4: - RESCALE_IMAGE( GLuint ); - break; - - case 2: - RESCALE_IMAGE( GLushort ); - break; - - case 1: - RESCALE_IMAGE( GLubyte ); - break; - default: - _mesa_problem(NULL,"unexpected bytes/pixel in _mesa_rescale_teximage2d"); - } -} - - -/** - * Upscale an image by replication, not (typical) stretching. - * We use this when the image width or height is less than a - * certain size (4, 8) and we need to upscale an image. - */ -void -_mesa_upscale_teximage2d(GLsizei inWidth, GLsizei inHeight, - GLsizei outWidth, GLsizei outHeight, - GLint comps, const GLchan *src, GLint srcRowStride, - GLchan *dest ) -{ - GLint i, j, k; - - ASSERT(outWidth >= inWidth); - ASSERT(outHeight >= inHeight); -#if 0 - ASSERT(inWidth == 1 || inWidth == 2 || inHeight == 1 || inHeight == 2); - ASSERT((outWidth & 3) == 0); - ASSERT((outHeight & 3) == 0); -#endif - - for (i = 0; i < outHeight; i++) { - const GLint ii = i % inHeight; - for (j = 0; j < outWidth; j++) { - const GLint jj = j % inWidth; - for (k = 0; k < comps; k++) { - dest[(i * outWidth + j) * comps + k] - = src[ii * srcRowStride + jj * comps + k]; - } - } - } -} - |