2 * Mesa 3-D graphics library
4 * Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included
14 * in all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
27 * \file mipmap.c mipmap generation and teximage resizing functions.
32 #include "glformats.h"
40 #include "../../gallium/auxiliary/util/u_format_rgb9e5.h"
41 #include "../../gallium/auxiliary/util/u_format_r11g11b10f.h"
46 bytes_per_pixel(GLenum datatype
, GLuint comps
)
50 if (datatype
== GL_UNSIGNED_INT_8_24_REV_MESA
||
51 datatype
== GL_UNSIGNED_INT_24_8_MESA
)
54 b
= _mesa_sizeof_packed_type(datatype
);
57 if (_mesa_type_is_packed(datatype
))
65 * \name Support macros for do_row and do_row_3d
67 * The macro madness is here for two reasons. First, it compacts the code
68 * slightly. Second, it makes it much easier to adjust the specifics of the
69 * filter to tune the rounding characteristics.
72 #define DECLARE_ROW_POINTERS(t, e) \
73 const t(*rowA)[e] = (const t(*)[e]) srcRowA; \
74 const t(*rowB)[e] = (const t(*)[e]) srcRowB; \
75 const t(*rowC)[e] = (const t(*)[e]) srcRowC; \
76 const t(*rowD)[e] = (const t(*)[e]) srcRowD; \
77 t(*dst)[e] = (t(*)[e]) dstRow
79 #define DECLARE_ROW_POINTERS0(t) \
80 const t *rowA = (const t *) srcRowA; \
81 const t *rowB = (const t *) srcRowB; \
82 const t *rowC = (const t *) srcRowC; \
83 const t *rowD = (const t *) srcRowD; \
86 #define FILTER_SUM_3D(Aj, Ak, Bj, Bk, Cj, Ck, Dj, Dk) \
87 ((unsigned) Aj + (unsigned) Ak \
88 + (unsigned) Bj + (unsigned) Bk \
89 + (unsigned) Cj + (unsigned) Ck \
90 + (unsigned) Dj + (unsigned) Dk \
93 #define FILTER_3D(e) \
95 dst[i][e] = FILTER_SUM_3D(rowA[j][e], rowA[k][e], \
96 rowB[j][e], rowB[k][e], \
97 rowC[j][e], rowC[k][e], \
98 rowD[j][e], rowD[k][e]); \
101 #define FILTER_SUM_3D_SIGNED(Aj, Ak, Bj, Bk, Cj, Ck, Dj, Dk) \
108 #define FILTER_3D_SIGNED(e) \
110 dst[i][e] = FILTER_SUM_3D_SIGNED(rowA[j][e], rowA[k][e], \
111 rowB[j][e], rowB[k][e], \
112 rowC[j][e], rowC[k][e], \
113 rowD[j][e], rowD[k][e]); \
116 #define FILTER_F_3D(e) \
118 dst[i][e] = (rowA[j][e] + rowA[k][e] \
119 + rowB[j][e] + rowB[k][e] \
120 + rowC[j][e] + rowC[k][e] \
121 + rowD[j][e] + rowD[k][e]) * 0.125F; \
124 #define FILTER_HF_3D(e) \
126 const GLfloat aj = _mesa_half_to_float(rowA[j][e]); \
127 const GLfloat ak = _mesa_half_to_float(rowA[k][e]); \
128 const GLfloat bj = _mesa_half_to_float(rowB[j][e]); \
129 const GLfloat bk = _mesa_half_to_float(rowB[k][e]); \
130 const GLfloat cj = _mesa_half_to_float(rowC[j][e]); \
131 const GLfloat ck = _mesa_half_to_float(rowC[k][e]); \
132 const GLfloat dj = _mesa_half_to_float(rowD[j][e]); \
133 const GLfloat dk = _mesa_half_to_float(rowD[k][e]); \
134 dst[i][e] = _mesa_float_to_half((aj + ak + bj + bk + cj + ck + dj + dk) \
141 * Average together two rows of a source image to produce a single new
142 * row in the dest image. It's legal for the two source rows to point
143 * to the same data. The source width must be equal to either the
144 * dest width or two times the dest width.
145 * \param datatype GL_UNSIGNED_BYTE, GL_UNSIGNED_SHORT, GL_FLOAT, etc.
146 * \param comps number of components per pixel (1..4)
149 do_row(GLenum datatype
, GLuint comps
, GLint srcWidth
,
150 const GLvoid
*srcRowA
, const GLvoid
*srcRowB
,
151 GLint dstWidth
, GLvoid
*dstRow
)
153 const GLuint k0
= (srcWidth
== dstWidth
) ? 0 : 1;
154 const GLuint colStride
= (srcWidth
== dstWidth
) ? 1 : 2;
159 /* This assertion is no longer valid with non-power-of-2 textures
160 assert(srcWidth == dstWidth || srcWidth == 2 * dstWidth);
163 if (datatype
== GL_UNSIGNED_BYTE
&& comps
== 4) {
165 const GLubyte(*rowA
)[4] = (const GLubyte(*)[4]) srcRowA
;
166 const GLubyte(*rowB
)[4] = (const GLubyte(*)[4]) srcRowB
;
167 GLubyte(*dst
)[4] = (GLubyte(*)[4]) dstRow
;
168 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
169 i
++, j
+= colStride
, k
+= colStride
) {
170 dst
[i
][0] = (rowA
[j
][0] + rowA
[k
][0] + rowB
[j
][0] + rowB
[k
][0]) / 4;
171 dst
[i
][1] = (rowA
[j
][1] + rowA
[k
][1] + rowB
[j
][1] + rowB
[k
][1]) / 4;
172 dst
[i
][2] = (rowA
[j
][2] + rowA
[k
][2] + rowB
[j
][2] + rowB
[k
][2]) / 4;
173 dst
[i
][3] = (rowA
[j
][3] + rowA
[k
][3] + rowB
[j
][3] + rowB
[k
][3]) / 4;
176 else if (datatype
== GL_UNSIGNED_BYTE
&& comps
== 3) {
178 const GLubyte(*rowA
)[3] = (const GLubyte(*)[3]) srcRowA
;
179 const GLubyte(*rowB
)[3] = (const GLubyte(*)[3]) srcRowB
;
180 GLubyte(*dst
)[3] = (GLubyte(*)[3]) dstRow
;
181 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
182 i
++, j
+= colStride
, k
+= colStride
) {
183 dst
[i
][0] = (rowA
[j
][0] + rowA
[k
][0] + rowB
[j
][0] + rowB
[k
][0]) / 4;
184 dst
[i
][1] = (rowA
[j
][1] + rowA
[k
][1] + rowB
[j
][1] + rowB
[k
][1]) / 4;
185 dst
[i
][2] = (rowA
[j
][2] + rowA
[k
][2] + rowB
[j
][2] + rowB
[k
][2]) / 4;
188 else if (datatype
== GL_UNSIGNED_BYTE
&& comps
== 2) {
190 const GLubyte(*rowA
)[2] = (const GLubyte(*)[2]) srcRowA
;
191 const GLubyte(*rowB
)[2] = (const GLubyte(*)[2]) srcRowB
;
192 GLubyte(*dst
)[2] = (GLubyte(*)[2]) dstRow
;
193 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
194 i
++, j
+= colStride
, k
+= colStride
) {
195 dst
[i
][0] = (rowA
[j
][0] + rowA
[k
][0] + rowB
[j
][0] + rowB
[k
][0]) >> 2;
196 dst
[i
][1] = (rowA
[j
][1] + rowA
[k
][1] + rowB
[j
][1] + rowB
[k
][1]) >> 2;
199 else if (datatype
== GL_UNSIGNED_BYTE
&& comps
== 1) {
201 const GLubyte
*rowA
= (const GLubyte
*) srcRowA
;
202 const GLubyte
*rowB
= (const GLubyte
*) srcRowB
;
203 GLubyte
*dst
= (GLubyte
*) dstRow
;
204 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
205 i
++, j
+= colStride
, k
+= colStride
) {
206 dst
[i
] = (rowA
[j
] + rowA
[k
] + rowB
[j
] + rowB
[k
]) >> 2;
210 else if (datatype
== GL_BYTE
&& comps
== 4) {
212 const GLbyte(*rowA
)[4] = (const GLbyte(*)[4]) srcRowA
;
213 const GLbyte(*rowB
)[4] = (const GLbyte(*)[4]) srcRowB
;
214 GLbyte(*dst
)[4] = (GLbyte(*)[4]) dstRow
;
215 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
216 i
++, j
+= colStride
, k
+= colStride
) {
217 dst
[i
][0] = (rowA
[j
][0] + rowA
[k
][0] + rowB
[j
][0] + rowB
[k
][0]) / 4;
218 dst
[i
][1] = (rowA
[j
][1] + rowA
[k
][1] + rowB
[j
][1] + rowB
[k
][1]) / 4;
219 dst
[i
][2] = (rowA
[j
][2] + rowA
[k
][2] + rowB
[j
][2] + rowB
[k
][2]) / 4;
220 dst
[i
][3] = (rowA
[j
][3] + rowA
[k
][3] + rowB
[j
][3] + rowB
[k
][3]) / 4;
223 else if (datatype
== GL_BYTE
&& comps
== 3) {
225 const GLbyte(*rowA
)[3] = (const GLbyte(*)[3]) srcRowA
;
226 const GLbyte(*rowB
)[3] = (const GLbyte(*)[3]) srcRowB
;
227 GLbyte(*dst
)[3] = (GLbyte(*)[3]) dstRow
;
228 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
229 i
++, j
+= colStride
, k
+= colStride
) {
230 dst
[i
][0] = (rowA
[j
][0] + rowA
[k
][0] + rowB
[j
][0] + rowB
[k
][0]) / 4;
231 dst
[i
][1] = (rowA
[j
][1] + rowA
[k
][1] + rowB
[j
][1] + rowB
[k
][1]) / 4;
232 dst
[i
][2] = (rowA
[j
][2] + rowA
[k
][2] + rowB
[j
][2] + rowB
[k
][2]) / 4;
235 else if (datatype
== GL_BYTE
&& comps
== 2) {
237 const GLbyte(*rowA
)[2] = (const GLbyte(*)[2]) srcRowA
;
238 const GLbyte(*rowB
)[2] = (const GLbyte(*)[2]) srcRowB
;
239 GLbyte(*dst
)[2] = (GLbyte(*)[2]) dstRow
;
240 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
241 i
++, j
+= colStride
, k
+= colStride
) {
242 dst
[i
][0] = (rowA
[j
][0] + rowA
[k
][0] + rowB
[j
][0] + rowB
[k
][0]) / 4;
243 dst
[i
][1] = (rowA
[j
][1] + rowA
[k
][1] + rowB
[j
][1] + rowB
[k
][1]) / 4;
246 else if (datatype
== GL_BYTE
&& comps
== 1) {
248 const GLbyte
*rowA
= (const GLbyte
*) srcRowA
;
249 const GLbyte
*rowB
= (const GLbyte
*) srcRowB
;
250 GLbyte
*dst
= (GLbyte
*) dstRow
;
251 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
252 i
++, j
+= colStride
, k
+= colStride
) {
253 dst
[i
] = (rowA
[j
] + rowA
[k
] + rowB
[j
] + rowB
[k
]) / 4;
257 else if (datatype
== GL_UNSIGNED_SHORT
&& comps
== 4) {
259 const GLushort(*rowA
)[4] = (const GLushort(*)[4]) srcRowA
;
260 const GLushort(*rowB
)[4] = (const GLushort(*)[4]) srcRowB
;
261 GLushort(*dst
)[4] = (GLushort(*)[4]) dstRow
;
262 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
263 i
++, j
+= colStride
, k
+= colStride
) {
264 dst
[i
][0] = (rowA
[j
][0] + rowA
[k
][0] + rowB
[j
][0] + rowB
[k
][0]) / 4;
265 dst
[i
][1] = (rowA
[j
][1] + rowA
[k
][1] + rowB
[j
][1] + rowB
[k
][1]) / 4;
266 dst
[i
][2] = (rowA
[j
][2] + rowA
[k
][2] + rowB
[j
][2] + rowB
[k
][2]) / 4;
267 dst
[i
][3] = (rowA
[j
][3] + rowA
[k
][3] + rowB
[j
][3] + rowB
[k
][3]) / 4;
270 else if (datatype
== GL_UNSIGNED_SHORT
&& comps
== 3) {
272 const GLushort(*rowA
)[3] = (const GLushort(*)[3]) srcRowA
;
273 const GLushort(*rowB
)[3] = (const GLushort(*)[3]) srcRowB
;
274 GLushort(*dst
)[3] = (GLushort(*)[3]) dstRow
;
275 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
276 i
++, j
+= colStride
, k
+= colStride
) {
277 dst
[i
][0] = (rowA
[j
][0] + rowA
[k
][0] + rowB
[j
][0] + rowB
[k
][0]) / 4;
278 dst
[i
][1] = (rowA
[j
][1] + rowA
[k
][1] + rowB
[j
][1] + rowB
[k
][1]) / 4;
279 dst
[i
][2] = (rowA
[j
][2] + rowA
[k
][2] + rowB
[j
][2] + rowB
[k
][2]) / 4;
282 else if (datatype
== GL_UNSIGNED_SHORT
&& comps
== 2) {
284 const GLushort(*rowA
)[2] = (const GLushort(*)[2]) srcRowA
;
285 const GLushort(*rowB
)[2] = (const GLushort(*)[2]) srcRowB
;
286 GLushort(*dst
)[2] = (GLushort(*)[2]) dstRow
;
287 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
288 i
++, j
+= colStride
, k
+= colStride
) {
289 dst
[i
][0] = (rowA
[j
][0] + rowA
[k
][0] + rowB
[j
][0] + rowB
[k
][0]) / 4;
290 dst
[i
][1] = (rowA
[j
][1] + rowA
[k
][1] + rowB
[j
][1] + rowB
[k
][1]) / 4;
293 else if (datatype
== GL_UNSIGNED_SHORT
&& comps
== 1) {
295 const GLushort
*rowA
= (const GLushort
*) srcRowA
;
296 const GLushort
*rowB
= (const GLushort
*) srcRowB
;
297 GLushort
*dst
= (GLushort
*) dstRow
;
298 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
299 i
++, j
+= colStride
, k
+= colStride
) {
300 dst
[i
] = (rowA
[j
] + rowA
[k
] + rowB
[j
] + rowB
[k
]) / 4;
304 else if (datatype
== GL_SHORT
&& comps
== 4) {
306 const GLshort(*rowA
)[4] = (const GLshort(*)[4]) srcRowA
;
307 const GLshort(*rowB
)[4] = (const GLshort(*)[4]) srcRowB
;
308 GLshort(*dst
)[4] = (GLshort(*)[4]) dstRow
;
309 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
310 i
++, j
+= colStride
, k
+= colStride
) {
311 dst
[i
][0] = (rowA
[j
][0] + rowA
[k
][0] + rowB
[j
][0] + rowB
[k
][0]) / 4;
312 dst
[i
][1] = (rowA
[j
][1] + rowA
[k
][1] + rowB
[j
][1] + rowB
[k
][1]) / 4;
313 dst
[i
][2] = (rowA
[j
][2] + rowA
[k
][2] + rowB
[j
][2] + rowB
[k
][2]) / 4;
314 dst
[i
][3] = (rowA
[j
][3] + rowA
[k
][3] + rowB
[j
][3] + rowB
[k
][3]) / 4;
317 else if (datatype
== GL_SHORT
&& comps
== 3) {
319 const GLshort(*rowA
)[3] = (const GLshort(*)[3]) srcRowA
;
320 const GLshort(*rowB
)[3] = (const GLshort(*)[3]) srcRowB
;
321 GLshort(*dst
)[3] = (GLshort(*)[3]) dstRow
;
322 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
323 i
++, j
+= colStride
, k
+= colStride
) {
324 dst
[i
][0] = (rowA
[j
][0] + rowA
[k
][0] + rowB
[j
][0] + rowB
[k
][0]) / 4;
325 dst
[i
][1] = (rowA
[j
][1] + rowA
[k
][1] + rowB
[j
][1] + rowB
[k
][1]) / 4;
326 dst
[i
][2] = (rowA
[j
][2] + rowA
[k
][2] + rowB
[j
][2] + rowB
[k
][2]) / 4;
329 else if (datatype
== GL_SHORT
&& comps
== 2) {
331 const GLshort(*rowA
)[2] = (const GLshort(*)[2]) srcRowA
;
332 const GLshort(*rowB
)[2] = (const GLshort(*)[2]) srcRowB
;
333 GLshort(*dst
)[2] = (GLshort(*)[2]) dstRow
;
334 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
335 i
++, j
+= colStride
, k
+= colStride
) {
336 dst
[i
][0] = (rowA
[j
][0] + rowA
[k
][0] + rowB
[j
][0] + rowB
[k
][0]) / 4;
337 dst
[i
][1] = (rowA
[j
][1] + rowA
[k
][1] + rowB
[j
][1] + rowB
[k
][1]) / 4;
340 else if (datatype
== GL_SHORT
&& comps
== 1) {
342 const GLshort
*rowA
= (const GLshort
*) srcRowA
;
343 const GLshort
*rowB
= (const GLshort
*) srcRowB
;
344 GLshort
*dst
= (GLshort
*) dstRow
;
345 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
346 i
++, j
+= colStride
, k
+= colStride
) {
347 dst
[i
] = (rowA
[j
] + rowA
[k
] + rowB
[j
] + rowB
[k
]) / 4;
351 else if (datatype
== GL_FLOAT
&& comps
== 4) {
353 const GLfloat(*rowA
)[4] = (const GLfloat(*)[4]) srcRowA
;
354 const GLfloat(*rowB
)[4] = (const GLfloat(*)[4]) srcRowB
;
355 GLfloat(*dst
)[4] = (GLfloat(*)[4]) dstRow
;
356 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
357 i
++, j
+= colStride
, k
+= colStride
) {
358 dst
[i
][0] = (rowA
[j
][0] + rowA
[k
][0] +
359 rowB
[j
][0] + rowB
[k
][0]) * 0.25F
;
360 dst
[i
][1] = (rowA
[j
][1] + rowA
[k
][1] +
361 rowB
[j
][1] + rowB
[k
][1]) * 0.25F
;
362 dst
[i
][2] = (rowA
[j
][2] + rowA
[k
][2] +
363 rowB
[j
][2] + rowB
[k
][2]) * 0.25F
;
364 dst
[i
][3] = (rowA
[j
][3] + rowA
[k
][3] +
365 rowB
[j
][3] + rowB
[k
][3]) * 0.25F
;
368 else if (datatype
== GL_FLOAT
&& comps
== 3) {
370 const GLfloat(*rowA
)[3] = (const GLfloat(*)[3]) srcRowA
;
371 const GLfloat(*rowB
)[3] = (const GLfloat(*)[3]) srcRowB
;
372 GLfloat(*dst
)[3] = (GLfloat(*)[3]) dstRow
;
373 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
374 i
++, j
+= colStride
, k
+= colStride
) {
375 dst
[i
][0] = (rowA
[j
][0] + rowA
[k
][0] +
376 rowB
[j
][0] + rowB
[k
][0]) * 0.25F
;
377 dst
[i
][1] = (rowA
[j
][1] + rowA
[k
][1] +
378 rowB
[j
][1] + rowB
[k
][1]) * 0.25F
;
379 dst
[i
][2] = (rowA
[j
][2] + rowA
[k
][2] +
380 rowB
[j
][2] + rowB
[k
][2]) * 0.25F
;
383 else if (datatype
== GL_FLOAT
&& comps
== 2) {
385 const GLfloat(*rowA
)[2] = (const GLfloat(*)[2]) srcRowA
;
386 const GLfloat(*rowB
)[2] = (const GLfloat(*)[2]) srcRowB
;
387 GLfloat(*dst
)[2] = (GLfloat(*)[2]) dstRow
;
388 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
389 i
++, j
+= colStride
, k
+= colStride
) {
390 dst
[i
][0] = (rowA
[j
][0] + rowA
[k
][0] +
391 rowB
[j
][0] + rowB
[k
][0]) * 0.25F
;
392 dst
[i
][1] = (rowA
[j
][1] + rowA
[k
][1] +
393 rowB
[j
][1] + rowB
[k
][1]) * 0.25F
;
396 else if (datatype
== GL_FLOAT
&& comps
== 1) {
398 const GLfloat
*rowA
= (const GLfloat
*) srcRowA
;
399 const GLfloat
*rowB
= (const GLfloat
*) srcRowB
;
400 GLfloat
*dst
= (GLfloat
*) dstRow
;
401 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
402 i
++, j
+= colStride
, k
+= colStride
) {
403 dst
[i
] = (rowA
[j
] + rowA
[k
] + rowB
[j
] + rowB
[k
]) * 0.25F
;
407 else if (datatype
== GL_HALF_FLOAT_ARB
&& comps
== 4) {
408 GLuint i
, j
, k
, comp
;
409 const GLhalfARB(*rowA
)[4] = (const GLhalfARB(*)[4]) srcRowA
;
410 const GLhalfARB(*rowB
)[4] = (const GLhalfARB(*)[4]) srcRowB
;
411 GLhalfARB(*dst
)[4] = (GLhalfARB(*)[4]) dstRow
;
412 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
413 i
++, j
+= colStride
, k
+= colStride
) {
414 for (comp
= 0; comp
< 4; comp
++) {
415 GLfloat aj
, ak
, bj
, bk
;
416 aj
= _mesa_half_to_float(rowA
[j
][comp
]);
417 ak
= _mesa_half_to_float(rowA
[k
][comp
]);
418 bj
= _mesa_half_to_float(rowB
[j
][comp
]);
419 bk
= _mesa_half_to_float(rowB
[k
][comp
]);
420 dst
[i
][comp
] = _mesa_float_to_half((aj
+ ak
+ bj
+ bk
) * 0.25F
);
424 else if (datatype
== GL_HALF_FLOAT_ARB
&& comps
== 3) {
425 GLuint i
, j
, k
, comp
;
426 const GLhalfARB(*rowA
)[3] = (const GLhalfARB(*)[3]) srcRowA
;
427 const GLhalfARB(*rowB
)[3] = (const GLhalfARB(*)[3]) srcRowB
;
428 GLhalfARB(*dst
)[3] = (GLhalfARB(*)[3]) dstRow
;
429 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
430 i
++, j
+= colStride
, k
+= colStride
) {
431 for (comp
= 0; comp
< 3; comp
++) {
432 GLfloat aj
, ak
, bj
, bk
;
433 aj
= _mesa_half_to_float(rowA
[j
][comp
]);
434 ak
= _mesa_half_to_float(rowA
[k
][comp
]);
435 bj
= _mesa_half_to_float(rowB
[j
][comp
]);
436 bk
= _mesa_half_to_float(rowB
[k
][comp
]);
437 dst
[i
][comp
] = _mesa_float_to_half((aj
+ ak
+ bj
+ bk
) * 0.25F
);
441 else if (datatype
== GL_HALF_FLOAT_ARB
&& comps
== 2) {
442 GLuint i
, j
, k
, comp
;
443 const GLhalfARB(*rowA
)[2] = (const GLhalfARB(*)[2]) srcRowA
;
444 const GLhalfARB(*rowB
)[2] = (const GLhalfARB(*)[2]) srcRowB
;
445 GLhalfARB(*dst
)[2] = (GLhalfARB(*)[2]) dstRow
;
446 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
447 i
++, j
+= colStride
, k
+= colStride
) {
448 for (comp
= 0; comp
< 2; comp
++) {
449 GLfloat aj
, ak
, bj
, bk
;
450 aj
= _mesa_half_to_float(rowA
[j
][comp
]);
451 ak
= _mesa_half_to_float(rowA
[k
][comp
]);
452 bj
= _mesa_half_to_float(rowB
[j
][comp
]);
453 bk
= _mesa_half_to_float(rowB
[k
][comp
]);
454 dst
[i
][comp
] = _mesa_float_to_half((aj
+ ak
+ bj
+ bk
) * 0.25F
);
458 else if (datatype
== GL_HALF_FLOAT_ARB
&& comps
== 1) {
460 const GLhalfARB
*rowA
= (const GLhalfARB
*) srcRowA
;
461 const GLhalfARB
*rowB
= (const GLhalfARB
*) srcRowB
;
462 GLhalfARB
*dst
= (GLhalfARB
*) dstRow
;
463 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
464 i
++, j
+= colStride
, k
+= colStride
) {
465 GLfloat aj
, ak
, bj
, bk
;
466 aj
= _mesa_half_to_float(rowA
[j
]);
467 ak
= _mesa_half_to_float(rowA
[k
]);
468 bj
= _mesa_half_to_float(rowB
[j
]);
469 bk
= _mesa_half_to_float(rowB
[k
]);
470 dst
[i
] = _mesa_float_to_half((aj
+ ak
+ bj
+ bk
) * 0.25F
);
474 else if (datatype
== GL_UNSIGNED_INT
&& comps
== 1) {
476 const GLuint
*rowA
= (const GLuint
*) srcRowA
;
477 const GLuint
*rowB
= (const GLuint
*) srcRowB
;
478 GLuint
*dst
= (GLuint
*) dstRow
;
479 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
480 i
++, j
+= colStride
, k
+= colStride
) {
481 dst
[i
] = rowA
[j
] / 4 + rowA
[k
] / 4 + rowB
[j
] / 4 + rowB
[k
] / 4;
485 else if (datatype
== GL_UNSIGNED_SHORT_5_6_5
&& comps
== 3) {
487 const GLushort
*rowA
= (const GLushort
*) srcRowA
;
488 const GLushort
*rowB
= (const GLushort
*) srcRowB
;
489 GLushort
*dst
= (GLushort
*) dstRow
;
490 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
491 i
++, j
+= colStride
, k
+= colStride
) {
492 const GLint rowAr0
= rowA
[j
] & 0x1f;
493 const GLint rowAr1
= rowA
[k
] & 0x1f;
494 const GLint rowBr0
= rowB
[j
] & 0x1f;
495 const GLint rowBr1
= rowB
[k
] & 0x1f;
496 const GLint rowAg0
= (rowA
[j
] >> 5) & 0x3f;
497 const GLint rowAg1
= (rowA
[k
] >> 5) & 0x3f;
498 const GLint rowBg0
= (rowB
[j
] >> 5) & 0x3f;
499 const GLint rowBg1
= (rowB
[k
] >> 5) & 0x3f;
500 const GLint rowAb0
= (rowA
[j
] >> 11) & 0x1f;
501 const GLint rowAb1
= (rowA
[k
] >> 11) & 0x1f;
502 const GLint rowBb0
= (rowB
[j
] >> 11) & 0x1f;
503 const GLint rowBb1
= (rowB
[k
] >> 11) & 0x1f;
504 const GLint red
= (rowAr0
+ rowAr1
+ rowBr0
+ rowBr1
) >> 2;
505 const GLint green
= (rowAg0
+ rowAg1
+ rowBg0
+ rowBg1
) >> 2;
506 const GLint blue
= (rowAb0
+ rowAb1
+ rowBb0
+ rowBb1
) >> 2;
507 dst
[i
] = (blue
<< 11) | (green
<< 5) | red
;
510 else if (datatype
== GL_UNSIGNED_SHORT_4_4_4_4
&& comps
== 4) {
512 const GLushort
*rowA
= (const GLushort
*) srcRowA
;
513 const GLushort
*rowB
= (const GLushort
*) srcRowB
;
514 GLushort
*dst
= (GLushort
*) dstRow
;
515 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
516 i
++, j
+= colStride
, k
+= colStride
) {
517 const GLint rowAr0
= rowA
[j
] & 0xf;
518 const GLint rowAr1
= rowA
[k
] & 0xf;
519 const GLint rowBr0
= rowB
[j
] & 0xf;
520 const GLint rowBr1
= rowB
[k
] & 0xf;
521 const GLint rowAg0
= (rowA
[j
] >> 4) & 0xf;
522 const GLint rowAg1
= (rowA
[k
] >> 4) & 0xf;
523 const GLint rowBg0
= (rowB
[j
] >> 4) & 0xf;
524 const GLint rowBg1
= (rowB
[k
] >> 4) & 0xf;
525 const GLint rowAb0
= (rowA
[j
] >> 8) & 0xf;
526 const GLint rowAb1
= (rowA
[k
] >> 8) & 0xf;
527 const GLint rowBb0
= (rowB
[j
] >> 8) & 0xf;
528 const GLint rowBb1
= (rowB
[k
] >> 8) & 0xf;
529 const GLint rowAa0
= (rowA
[j
] >> 12) & 0xf;
530 const GLint rowAa1
= (rowA
[k
] >> 12) & 0xf;
531 const GLint rowBa0
= (rowB
[j
] >> 12) & 0xf;
532 const GLint rowBa1
= (rowB
[k
] >> 12) & 0xf;
533 const GLint red
= (rowAr0
+ rowAr1
+ rowBr0
+ rowBr1
) >> 2;
534 const GLint green
= (rowAg0
+ rowAg1
+ rowBg0
+ rowBg1
) >> 2;
535 const GLint blue
= (rowAb0
+ rowAb1
+ rowBb0
+ rowBb1
) >> 2;
536 const GLint alpha
= (rowAa0
+ rowAa1
+ rowBa0
+ rowBa1
) >> 2;
537 dst
[i
] = (alpha
<< 12) | (blue
<< 8) | (green
<< 4) | red
;
540 else if (datatype
== GL_UNSIGNED_SHORT_1_5_5_5_REV
&& comps
== 4) {
542 const GLushort
*rowA
= (const GLushort
*) srcRowA
;
543 const GLushort
*rowB
= (const GLushort
*) srcRowB
;
544 GLushort
*dst
= (GLushort
*) dstRow
;
545 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
546 i
++, j
+= colStride
, k
+= colStride
) {
547 const GLint rowAr0
= rowA
[j
] & 0x1f;
548 const GLint rowAr1
= rowA
[k
] & 0x1f;
549 const GLint rowBr0
= rowB
[j
] & 0x1f;
550 const GLint rowBr1
= rowB
[k
] & 0x1f;
551 const GLint rowAg0
= (rowA
[j
] >> 5) & 0x1f;
552 const GLint rowAg1
= (rowA
[k
] >> 5) & 0x1f;
553 const GLint rowBg0
= (rowB
[j
] >> 5) & 0x1f;
554 const GLint rowBg1
= (rowB
[k
] >> 5) & 0x1f;
555 const GLint rowAb0
= (rowA
[j
] >> 10) & 0x1f;
556 const GLint rowAb1
= (rowA
[k
] >> 10) & 0x1f;
557 const GLint rowBb0
= (rowB
[j
] >> 10) & 0x1f;
558 const GLint rowBb1
= (rowB
[k
] >> 10) & 0x1f;
559 const GLint rowAa0
= (rowA
[j
] >> 15) & 0x1;
560 const GLint rowAa1
= (rowA
[k
] >> 15) & 0x1;
561 const GLint rowBa0
= (rowB
[j
] >> 15) & 0x1;
562 const GLint rowBa1
= (rowB
[k
] >> 15) & 0x1;
563 const GLint red
= (rowAr0
+ rowAr1
+ rowBr0
+ rowBr1
) >> 2;
564 const GLint green
= (rowAg0
+ rowAg1
+ rowBg0
+ rowBg1
) >> 2;
565 const GLint blue
= (rowAb0
+ rowAb1
+ rowBb0
+ rowBb1
) >> 2;
566 const GLint alpha
= (rowAa0
+ rowAa1
+ rowBa0
+ rowBa1
) >> 2;
567 dst
[i
] = (alpha
<< 15) | (blue
<< 10) | (green
<< 5) | red
;
570 else if (datatype
== GL_UNSIGNED_SHORT_5_5_5_1
&& comps
== 4) {
572 const GLushort
*rowA
= (const GLushort
*) srcRowA
;
573 const GLushort
*rowB
= (const GLushort
*) srcRowB
;
574 GLushort
*dst
= (GLushort
*) dstRow
;
575 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
576 i
++, j
+= colStride
, k
+= colStride
) {
577 const GLint rowAr0
= (rowA
[j
] >> 11) & 0x1f;
578 const GLint rowAr1
= (rowA
[k
] >> 11) & 0x1f;
579 const GLint rowBr0
= (rowB
[j
] >> 11) & 0x1f;
580 const GLint rowBr1
= (rowB
[k
] >> 11) & 0x1f;
581 const GLint rowAg0
= (rowA
[j
] >> 6) & 0x1f;
582 const GLint rowAg1
= (rowA
[k
] >> 6) & 0x1f;
583 const GLint rowBg0
= (rowB
[j
] >> 6) & 0x1f;
584 const GLint rowBg1
= (rowB
[k
] >> 6) & 0x1f;
585 const GLint rowAb0
= (rowA
[j
] >> 1) & 0x1f;
586 const GLint rowAb1
= (rowA
[k
] >> 1) & 0x1f;
587 const GLint rowBb0
= (rowB
[j
] >> 1) & 0x1f;
588 const GLint rowBb1
= (rowB
[k
] >> 1) & 0x1f;
589 const GLint rowAa0
= (rowA
[j
] & 0x1);
590 const GLint rowAa1
= (rowA
[k
] & 0x1);
591 const GLint rowBa0
= (rowB
[j
] & 0x1);
592 const GLint rowBa1
= (rowB
[k
] & 0x1);
593 const GLint red
= (rowAr0
+ rowAr1
+ rowBr0
+ rowBr1
) >> 2;
594 const GLint green
= (rowAg0
+ rowAg1
+ rowBg0
+ rowBg1
) >> 2;
595 const GLint blue
= (rowAb0
+ rowAb1
+ rowBb0
+ rowBb1
) >> 2;
596 const GLint alpha
= (rowAa0
+ rowAa1
+ rowBa0
+ rowBa1
) >> 2;
597 dst
[i
] = (red
<< 11) | (green
<< 6) | (blue
<< 1) | alpha
;
601 else if (datatype
== GL_UNSIGNED_BYTE_3_3_2
&& comps
== 3) {
603 const GLubyte
*rowA
= (const GLubyte
*) srcRowA
;
604 const GLubyte
*rowB
= (const GLubyte
*) srcRowB
;
605 GLubyte
*dst
= (GLubyte
*) dstRow
;
606 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
607 i
++, j
+= colStride
, k
+= colStride
) {
608 const GLint rowAr0
= rowA
[j
] & 0x3;
609 const GLint rowAr1
= rowA
[k
] & 0x3;
610 const GLint rowBr0
= rowB
[j
] & 0x3;
611 const GLint rowBr1
= rowB
[k
] & 0x3;
612 const GLint rowAg0
= (rowA
[j
] >> 2) & 0x7;
613 const GLint rowAg1
= (rowA
[k
] >> 2) & 0x7;
614 const GLint rowBg0
= (rowB
[j
] >> 2) & 0x7;
615 const GLint rowBg1
= (rowB
[k
] >> 2) & 0x7;
616 const GLint rowAb0
= (rowA
[j
] >> 5) & 0x7;
617 const GLint rowAb1
= (rowA
[k
] >> 5) & 0x7;
618 const GLint rowBb0
= (rowB
[j
] >> 5) & 0x7;
619 const GLint rowBb1
= (rowB
[k
] >> 5) & 0x7;
620 const GLint red
= (rowAr0
+ rowAr1
+ rowBr0
+ rowBr1
) >> 2;
621 const GLint green
= (rowAg0
+ rowAg1
+ rowBg0
+ rowBg1
) >> 2;
622 const GLint blue
= (rowAb0
+ rowAb1
+ rowBb0
+ rowBb1
) >> 2;
623 dst
[i
] = (blue
<< 5) | (green
<< 2) | red
;
627 else if (datatype
== MESA_UNSIGNED_BYTE_4_4
&& comps
== 2) {
629 const GLubyte
*rowA
= (const GLubyte
*) srcRowA
;
630 const GLubyte
*rowB
= (const GLubyte
*) srcRowB
;
631 GLubyte
*dst
= (GLubyte
*) dstRow
;
632 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
633 i
++, j
+= colStride
, k
+= colStride
) {
634 const GLint rowAr0
= rowA
[j
] & 0xf;
635 const GLint rowAr1
= rowA
[k
] & 0xf;
636 const GLint rowBr0
= rowB
[j
] & 0xf;
637 const GLint rowBr1
= rowB
[k
] & 0xf;
638 const GLint rowAg0
= (rowA
[j
] >> 4) & 0xf;
639 const GLint rowAg1
= (rowA
[k
] >> 4) & 0xf;
640 const GLint rowBg0
= (rowB
[j
] >> 4) & 0xf;
641 const GLint rowBg1
= (rowB
[k
] >> 4) & 0xf;
642 const GLint r
= (rowAr0
+ rowAr1
+ rowBr0
+ rowBr1
) >> 2;
643 const GLint g
= (rowAg0
+ rowAg1
+ rowBg0
+ rowBg1
) >> 2;
644 dst
[i
] = (g
<< 4) | r
;
648 else if (datatype
== GL_UNSIGNED_INT_2_10_10_10_REV
&& comps
== 4) {
650 const GLuint
*rowA
= (const GLuint
*) srcRowA
;
651 const GLuint
*rowB
= (const GLuint
*) srcRowB
;
652 GLuint
*dst
= (GLuint
*) dstRow
;
653 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
654 i
++, j
+= colStride
, k
+= colStride
) {
655 const GLint rowAr0
= rowA
[j
] & 0x3ff;
656 const GLint rowAr1
= rowA
[k
] & 0x3ff;
657 const GLint rowBr0
= rowB
[j
] & 0x3ff;
658 const GLint rowBr1
= rowB
[k
] & 0x3ff;
659 const GLint rowAg0
= (rowA
[j
] >> 10) & 0x3ff;
660 const GLint rowAg1
= (rowA
[k
] >> 10) & 0x3ff;
661 const GLint rowBg0
= (rowB
[j
] >> 10) & 0x3ff;
662 const GLint rowBg1
= (rowB
[k
] >> 10) & 0x3ff;
663 const GLint rowAb0
= (rowA
[j
] >> 20) & 0x3ff;
664 const GLint rowAb1
= (rowA
[k
] >> 20) & 0x3ff;
665 const GLint rowBb0
= (rowB
[j
] >> 20) & 0x3ff;
666 const GLint rowBb1
= (rowB
[k
] >> 20) & 0x3ff;
667 const GLint rowAa0
= (rowA
[j
] >> 30) & 0x3;
668 const GLint rowAa1
= (rowA
[k
] >> 30) & 0x3;
669 const GLint rowBa0
= (rowB
[j
] >> 30) & 0x3;
670 const GLint rowBa1
= (rowB
[k
] >> 30) & 0x3;
671 const GLint red
= (rowAr0
+ rowAr1
+ rowBr0
+ rowBr1
) >> 2;
672 const GLint green
= (rowAg0
+ rowAg1
+ rowBg0
+ rowBg1
) >> 2;
673 const GLint blue
= (rowAb0
+ rowAb1
+ rowBb0
+ rowBb1
) >> 2;
674 const GLint alpha
= (rowAa0
+ rowAa1
+ rowBa0
+ rowBa1
) >> 2;
675 dst
[i
] = (alpha
<< 30) | (blue
<< 20) | (green
<< 10) | red
;
679 else if (datatype
== GL_UNSIGNED_INT_5_9_9_9_REV
&& comps
== 3) {
681 const GLuint
*rowA
= (const GLuint
*) srcRowA
;
682 const GLuint
*rowB
= (const GLuint
*) srcRowB
;
683 GLuint
*dst
= (GLuint
*)dstRow
;
684 GLfloat res
[3], rowAj
[3], rowBj
[3], rowAk
[3], rowBk
[3];
685 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
686 i
++, j
+= colStride
, k
+= colStride
) {
687 rgb9e5_to_float3(rowA
[j
], rowAj
);
688 rgb9e5_to_float3(rowB
[j
], rowBj
);
689 rgb9e5_to_float3(rowA
[k
], rowAk
);
690 rgb9e5_to_float3(rowB
[k
], rowBk
);
691 res
[0] = (rowAj
[0] + rowAk
[0] + rowBj
[0] + rowBk
[0]) * 0.25F
;
692 res
[1] = (rowAj
[1] + rowAk
[1] + rowBj
[1] + rowBk
[1]) * 0.25F
;
693 res
[2] = (rowAj
[2] + rowAk
[2] + rowBj
[2] + rowBk
[2]) * 0.25F
;
694 dst
[i
] = float3_to_rgb9e5(res
);
698 else if (datatype
== GL_UNSIGNED_INT_10F_11F_11F_REV
&& comps
== 3) {
700 const GLuint
*rowA
= (const GLuint
*) srcRowA
;
701 const GLuint
*rowB
= (const GLuint
*) srcRowB
;
702 GLuint
*dst
= (GLuint
*)dstRow
;
703 GLfloat res
[3], rowAj
[3], rowBj
[3], rowAk
[3], rowBk
[3];
704 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
705 i
++, j
+= colStride
, k
+= colStride
) {
706 r11g11b10f_to_float3(rowA
[j
], rowAj
);
707 r11g11b10f_to_float3(rowB
[j
], rowBj
);
708 r11g11b10f_to_float3(rowA
[k
], rowAk
);
709 r11g11b10f_to_float3(rowB
[k
], rowBk
);
710 res
[0] = (rowAj
[0] + rowAk
[0] + rowBj
[0] + rowBk
[0]) * 0.25F
;
711 res
[1] = (rowAj
[1] + rowAk
[1] + rowBj
[1] + rowBk
[1]) * 0.25F
;
712 res
[2] = (rowAj
[2] + rowAk
[2] + rowBj
[2] + rowBk
[2]) * 0.25F
;
713 dst
[i
] = float3_to_r11g11b10f(res
);
717 else if (datatype
== GL_FLOAT_32_UNSIGNED_INT_24_8_REV
&& comps
== 1) {
719 const GLfloat
*rowA
= (const GLfloat
*) srcRowA
;
720 const GLfloat
*rowB
= (const GLfloat
*) srcRowB
;
721 GLfloat
*dst
= (GLfloat
*) dstRow
;
722 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
723 i
++, j
+= colStride
, k
+= colStride
) {
724 dst
[i
*2] = (rowA
[j
*2] + rowA
[k
*2] + rowB
[j
*2] + rowB
[k
*2]) * 0.25F
;
728 else if (datatype
== GL_UNSIGNED_INT_24_8_MESA
&& comps
== 2) {
730 const GLuint
*rowA
= (const GLuint
*) srcRowA
;
731 const GLuint
*rowB
= (const GLuint
*) srcRowB
;
732 GLuint
*dst
= (GLuint
*) dstRow
;
733 /* note: averaging stencil values seems weird, but what else? */
734 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
735 i
++, j
+= colStride
, k
+= colStride
) {
736 GLuint z
= (((rowA
[j
] >> 8) + (rowA
[k
] >> 8) +
737 (rowB
[j
] >> 8) + (rowB
[k
] >> 8)) / 4) << 8;
738 GLuint s
= ((rowA
[j
] & 0xff) + (rowA
[k
] & 0xff) +
739 (rowB
[j
] & 0xff) + (rowB
[k
] & 0xff)) / 4;
743 else if (datatype
== GL_UNSIGNED_INT_8_24_REV_MESA
&& comps
== 2) {
745 const GLuint
*rowA
= (const GLuint
*) srcRowA
;
746 const GLuint
*rowB
= (const GLuint
*) srcRowB
;
747 GLuint
*dst
= (GLuint
*) dstRow
;
748 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
749 i
++, j
+= colStride
, k
+= colStride
) {
750 GLuint z
= ((rowA
[j
] & 0xffffff) + (rowA
[k
] & 0xffffff) +
751 (rowB
[j
] & 0xffffff) + (rowB
[k
] & 0xffffff)) / 4;
752 GLuint s
= (((rowA
[j
] >> 24) + (rowA
[k
] >> 24) +
753 (rowB
[j
] >> 24) + (rowB
[k
] >> 24)) / 4) << 24;
759 _mesa_problem(NULL
, "bad format in do_row()");
765 * Average together four rows of a source image to produce a single new
766 * row in the dest image. It's legal for the two source rows to point
767 * to the same data. The source width must be equal to either the
768 * dest width or two times the dest width.
770 * \param datatype GL pixel type \c GL_UNSIGNED_BYTE, \c GL_UNSIGNED_SHORT,
772 * \param comps number of components per pixel (1..4)
773 * \param srcWidth Width of a row in the source data
774 * \param srcRowA Pointer to one of the rows of source data
775 * \param srcRowB Pointer to one of the rows of source data
776 * \param srcRowC Pointer to one of the rows of source data
777 * \param srcRowD Pointer to one of the rows of source data
778 * \param dstWidth Width of a row in the destination data
779 * \param srcRowA Pointer to the row of destination data
782 do_row_3D(GLenum datatype
, GLuint comps
, GLint srcWidth
,
783 const GLvoid
*srcRowA
, const GLvoid
*srcRowB
,
784 const GLvoid
*srcRowC
, const GLvoid
*srcRowD
,
785 GLint dstWidth
, GLvoid
*dstRow
)
787 const GLuint k0
= (srcWidth
== dstWidth
) ? 0 : 1;
788 const GLuint colStride
= (srcWidth
== dstWidth
) ? 1 : 2;
794 if ((datatype
== GL_UNSIGNED_BYTE
) && (comps
== 4)) {
795 DECLARE_ROW_POINTERS(GLubyte
, 4);
797 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
798 i
++, j
+= colStride
, k
+= colStride
) {
805 else if ((datatype
== GL_UNSIGNED_BYTE
) && (comps
== 3)) {
806 DECLARE_ROW_POINTERS(GLubyte
, 3);
808 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
809 i
++, j
+= colStride
, k
+= colStride
) {
815 else if ((datatype
== GL_UNSIGNED_BYTE
) && (comps
== 2)) {
816 DECLARE_ROW_POINTERS(GLubyte
, 2);
818 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
819 i
++, j
+= colStride
, k
+= colStride
) {
824 else if ((datatype
== GL_UNSIGNED_BYTE
) && (comps
== 1)) {
825 DECLARE_ROW_POINTERS(GLubyte
, 1);
827 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
828 i
++, j
+= colStride
, k
+= colStride
) {
832 else if ((datatype
== GL_BYTE
) && (comps
== 4)) {
833 DECLARE_ROW_POINTERS(GLbyte
, 4);
835 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
836 i
++, j
+= colStride
, k
+= colStride
) {
843 else if ((datatype
== GL_BYTE
) && (comps
== 3)) {
844 DECLARE_ROW_POINTERS(GLbyte
, 3);
846 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
847 i
++, j
+= colStride
, k
+= colStride
) {
853 else if ((datatype
== GL_BYTE
) && (comps
== 2)) {
854 DECLARE_ROW_POINTERS(GLbyte
, 2);
856 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
857 i
++, j
+= colStride
, k
+= colStride
) {
862 else if ((datatype
== GL_BYTE
) && (comps
== 1)) {
863 DECLARE_ROW_POINTERS(GLbyte
, 1);
865 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
866 i
++, j
+= colStride
, k
+= colStride
) {
870 else if ((datatype
== GL_UNSIGNED_SHORT
) && (comps
== 4)) {
871 DECLARE_ROW_POINTERS(GLushort
, 4);
873 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
874 i
++, j
+= colStride
, k
+= colStride
) {
881 else if ((datatype
== GL_UNSIGNED_SHORT
) && (comps
== 3)) {
882 DECLARE_ROW_POINTERS(GLushort
, 3);
884 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
885 i
++, j
+= colStride
, k
+= colStride
) {
891 else if ((datatype
== GL_UNSIGNED_SHORT
) && (comps
== 2)) {
892 DECLARE_ROW_POINTERS(GLushort
, 2);
894 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
895 i
++, j
+= colStride
, k
+= colStride
) {
900 else if ((datatype
== GL_UNSIGNED_SHORT
) && (comps
== 1)) {
901 DECLARE_ROW_POINTERS(GLushort
, 1);
903 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
904 i
++, j
+= colStride
, k
+= colStride
) {
908 else if ((datatype
== GL_SHORT
) && (comps
== 4)) {
909 DECLARE_ROW_POINTERS(GLshort
, 4);
911 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
912 i
++, j
+= colStride
, k
+= colStride
) {
919 else if ((datatype
== GL_SHORT
) && (comps
== 3)) {
920 DECLARE_ROW_POINTERS(GLshort
, 3);
922 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
923 i
++, j
+= colStride
, k
+= colStride
) {
929 else if ((datatype
== GL_SHORT
) && (comps
== 2)) {
930 DECLARE_ROW_POINTERS(GLshort
, 2);
932 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
933 i
++, j
+= colStride
, k
+= colStride
) {
938 else if ((datatype
== GL_SHORT
) && (comps
== 1)) {
939 DECLARE_ROW_POINTERS(GLshort
, 1);
941 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
942 i
++, j
+= colStride
, k
+= colStride
) {
946 else if ((datatype
== GL_FLOAT
) && (comps
== 4)) {
947 DECLARE_ROW_POINTERS(GLfloat
, 4);
949 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
950 i
++, j
+= colStride
, k
+= colStride
) {
957 else if ((datatype
== GL_FLOAT
) && (comps
== 3)) {
958 DECLARE_ROW_POINTERS(GLfloat
, 3);
960 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
961 i
++, j
+= colStride
, k
+= colStride
) {
967 else if ((datatype
== GL_FLOAT
) && (comps
== 2)) {
968 DECLARE_ROW_POINTERS(GLfloat
, 2);
970 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
971 i
++, j
+= colStride
, k
+= colStride
) {
976 else if ((datatype
== GL_FLOAT
) && (comps
== 1)) {
977 DECLARE_ROW_POINTERS(GLfloat
, 1);
979 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
980 i
++, j
+= colStride
, k
+= colStride
) {
984 else if ((datatype
== GL_HALF_FLOAT_ARB
) && (comps
== 4)) {
985 DECLARE_ROW_POINTERS(GLhalfARB
, 4);
987 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
988 i
++, j
+= colStride
, k
+= colStride
) {
995 else if ((datatype
== GL_HALF_FLOAT_ARB
) && (comps
== 3)) {
996 DECLARE_ROW_POINTERS(GLhalfARB
, 3);
998 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
999 i
++, j
+= colStride
, k
+= colStride
) {
1005 else if ((datatype
== GL_HALF_FLOAT_ARB
) && (comps
== 2)) {
1006 DECLARE_ROW_POINTERS(GLhalfARB
, 2);
1008 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
1009 i
++, j
+= colStride
, k
+= colStride
) {
1014 else if ((datatype
== GL_HALF_FLOAT_ARB
) && (comps
== 1)) {
1015 DECLARE_ROW_POINTERS(GLhalfARB
, 1);
1017 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
1018 i
++, j
+= colStride
, k
+= colStride
) {
1022 else if ((datatype
== GL_UNSIGNED_INT
) && (comps
== 1)) {
1023 const GLuint
*rowA
= (const GLuint
*) srcRowA
;
1024 const GLuint
*rowB
= (const GLuint
*) srcRowB
;
1025 const GLuint
*rowC
= (const GLuint
*) srcRowC
;
1026 const GLuint
*rowD
= (const GLuint
*) srcRowD
;
1027 GLfloat
*dst
= (GLfloat
*) dstRow
;
1029 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
1030 i
++, j
+= colStride
, k
+= colStride
) {
1031 const uint64_t tmp
= (((uint64_t) rowA
[j
] + (uint64_t) rowA
[k
])
1032 + ((uint64_t) rowB
[j
] + (uint64_t) rowB
[k
])
1033 + ((uint64_t) rowC
[j
] + (uint64_t) rowC
[k
])
1034 + ((uint64_t) rowD
[j
] + (uint64_t) rowD
[k
]));
1035 dst
[i
] = (GLfloat
)((double) tmp
* 0.125);
1038 else if ((datatype
== GL_UNSIGNED_SHORT_5_6_5
) && (comps
== 3)) {
1039 DECLARE_ROW_POINTERS0(GLushort
);
1041 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
1042 i
++, j
+= colStride
, k
+= colStride
) {
1043 const GLint rowAr0
= rowA
[j
] & 0x1f;
1044 const GLint rowAr1
= rowA
[k
] & 0x1f;
1045 const GLint rowBr0
= rowB
[j
] & 0x1f;
1046 const GLint rowBr1
= rowB
[k
] & 0x1f;
1047 const GLint rowCr0
= rowC
[j
] & 0x1f;
1048 const GLint rowCr1
= rowC
[k
] & 0x1f;
1049 const GLint rowDr0
= rowD
[j
] & 0x1f;
1050 const GLint rowDr1
= rowD
[k
] & 0x1f;
1051 const GLint rowAg0
= (rowA
[j
] >> 5) & 0x3f;
1052 const GLint rowAg1
= (rowA
[k
] >> 5) & 0x3f;
1053 const GLint rowBg0
= (rowB
[j
] >> 5) & 0x3f;
1054 const GLint rowBg1
= (rowB
[k
] >> 5) & 0x3f;
1055 const GLint rowCg0
= (rowC
[j
] >> 5) & 0x3f;
1056 const GLint rowCg1
= (rowC
[k
] >> 5) & 0x3f;
1057 const GLint rowDg0
= (rowD
[j
] >> 5) & 0x3f;
1058 const GLint rowDg1
= (rowD
[k
] >> 5) & 0x3f;
1059 const GLint rowAb0
= (rowA
[j
] >> 11) & 0x1f;
1060 const GLint rowAb1
= (rowA
[k
] >> 11) & 0x1f;
1061 const GLint rowBb0
= (rowB
[j
] >> 11) & 0x1f;
1062 const GLint rowBb1
= (rowB
[k
] >> 11) & 0x1f;
1063 const GLint rowCb0
= (rowC
[j
] >> 11) & 0x1f;
1064 const GLint rowCb1
= (rowC
[k
] >> 11) & 0x1f;
1065 const GLint rowDb0
= (rowD
[j
] >> 11) & 0x1f;
1066 const GLint rowDb1
= (rowD
[k
] >> 11) & 0x1f;
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 dst
[i
] = (b
<< 11) | (g
<< 5) | r
;
1076 else if ((datatype
== GL_UNSIGNED_SHORT_4_4_4_4
) && (comps
== 4)) {
1077 DECLARE_ROW_POINTERS0(GLushort
);
1079 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
1080 i
++, j
+= colStride
, k
+= colStride
) {
1081 const GLint rowAr0
= rowA
[j
] & 0xf;
1082 const GLint rowAr1
= rowA
[k
] & 0xf;
1083 const GLint rowBr0
= rowB
[j
] & 0xf;
1084 const GLint rowBr1
= rowB
[k
] & 0xf;
1085 const GLint rowCr0
= rowC
[j
] & 0xf;
1086 const GLint rowCr1
= rowC
[k
] & 0xf;
1087 const GLint rowDr0
= rowD
[j
] & 0xf;
1088 const GLint rowDr1
= rowD
[k
] & 0xf;
1089 const GLint rowAg0
= (rowA
[j
] >> 4) & 0xf;
1090 const GLint rowAg1
= (rowA
[k
] >> 4) & 0xf;
1091 const GLint rowBg0
= (rowB
[j
] >> 4) & 0xf;
1092 const GLint rowBg1
= (rowB
[k
] >> 4) & 0xf;
1093 const GLint rowCg0
= (rowC
[j
] >> 4) & 0xf;
1094 const GLint rowCg1
= (rowC
[k
] >> 4) & 0xf;
1095 const GLint rowDg0
= (rowD
[j
] >> 4) & 0xf;
1096 const GLint rowDg1
= (rowD
[k
] >> 4) & 0xf;
1097 const GLint rowAb0
= (rowA
[j
] >> 8) & 0xf;
1098 const GLint rowAb1
= (rowA
[k
] >> 8) & 0xf;
1099 const GLint rowBb0
= (rowB
[j
] >> 8) & 0xf;
1100 const GLint rowBb1
= (rowB
[k
] >> 8) & 0xf;
1101 const GLint rowCb0
= (rowC
[j
] >> 8) & 0xf;
1102 const GLint rowCb1
= (rowC
[k
] >> 8) & 0xf;
1103 const GLint rowDb0
= (rowD
[j
] >> 8) & 0xf;
1104 const GLint rowDb1
= (rowD
[k
] >> 8) & 0xf;
1105 const GLint rowAa0
= (rowA
[j
] >> 12) & 0xf;
1106 const GLint rowAa1
= (rowA
[k
] >> 12) & 0xf;
1107 const GLint rowBa0
= (rowB
[j
] >> 12) & 0xf;
1108 const GLint rowBa1
= (rowB
[k
] >> 12) & 0xf;
1109 const GLint rowCa0
= (rowC
[j
] >> 12) & 0xf;
1110 const GLint rowCa1
= (rowC
[k
] >> 12) & 0xf;
1111 const GLint rowDa0
= (rowD
[j
] >> 12) & 0xf;
1112 const GLint rowDa1
= (rowD
[k
] >> 12) & 0xf;
1113 const GLint r
= FILTER_SUM_3D(rowAr0
, rowAr1
, rowBr0
, rowBr1
,
1114 rowCr0
, rowCr1
, rowDr0
, rowDr1
);
1115 const GLint g
= FILTER_SUM_3D(rowAg0
, rowAg1
, rowBg0
, rowBg1
,
1116 rowCg0
, rowCg1
, rowDg0
, rowDg1
);
1117 const GLint b
= FILTER_SUM_3D(rowAb0
, rowAb1
, rowBb0
, rowBb1
,
1118 rowCb0
, rowCb1
, rowDb0
, rowDb1
);
1119 const GLint a
= FILTER_SUM_3D(rowAa0
, rowAa1
, rowBa0
, rowBa1
,
1120 rowCa0
, rowCa1
, rowDa0
, rowDa1
);
1122 dst
[i
] = (a
<< 12) | (b
<< 8) | (g
<< 4) | r
;
1125 else if ((datatype
== GL_UNSIGNED_SHORT_1_5_5_5_REV
) && (comps
== 4)) {
1126 DECLARE_ROW_POINTERS0(GLushort
);
1128 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
1129 i
++, j
+= colStride
, k
+= colStride
) {
1130 const GLint rowAr0
= rowA
[j
] & 0x1f;
1131 const GLint rowAr1
= rowA
[k
] & 0x1f;
1132 const GLint rowBr0
= rowB
[j
] & 0x1f;
1133 const GLint rowBr1
= rowB
[k
] & 0x1f;
1134 const GLint rowCr0
= rowC
[j
] & 0x1f;
1135 const GLint rowCr1
= rowC
[k
] & 0x1f;
1136 const GLint rowDr0
= rowD
[j
] & 0x1f;
1137 const GLint rowDr1
= rowD
[k
] & 0x1f;
1138 const GLint rowAg0
= (rowA
[j
] >> 5) & 0x1f;
1139 const GLint rowAg1
= (rowA
[k
] >> 5) & 0x1f;
1140 const GLint rowBg0
= (rowB
[j
] >> 5) & 0x1f;
1141 const GLint rowBg1
= (rowB
[k
] >> 5) & 0x1f;
1142 const GLint rowCg0
= (rowC
[j
] >> 5) & 0x1f;
1143 const GLint rowCg1
= (rowC
[k
] >> 5) & 0x1f;
1144 const GLint rowDg0
= (rowD
[j
] >> 5) & 0x1f;
1145 const GLint rowDg1
= (rowD
[k
] >> 5) & 0x1f;
1146 const GLint rowAb0
= (rowA
[j
] >> 10) & 0x1f;
1147 const GLint rowAb1
= (rowA
[k
] >> 10) & 0x1f;
1148 const GLint rowBb0
= (rowB
[j
] >> 10) & 0x1f;
1149 const GLint rowBb1
= (rowB
[k
] >> 10) & 0x1f;
1150 const GLint rowCb0
= (rowC
[j
] >> 10) & 0x1f;
1151 const GLint rowCb1
= (rowC
[k
] >> 10) & 0x1f;
1152 const GLint rowDb0
= (rowD
[j
] >> 10) & 0x1f;
1153 const GLint rowDb1
= (rowD
[k
] >> 10) & 0x1f;
1154 const GLint rowAa0
= (rowA
[j
] >> 15) & 0x1;
1155 const GLint rowAa1
= (rowA
[k
] >> 15) & 0x1;
1156 const GLint rowBa0
= (rowB
[j
] >> 15) & 0x1;
1157 const GLint rowBa1
= (rowB
[k
] >> 15) & 0x1;
1158 const GLint rowCa0
= (rowC
[j
] >> 15) & 0x1;
1159 const GLint rowCa1
= (rowC
[k
] >> 15) & 0x1;
1160 const GLint rowDa0
= (rowD
[j
] >> 15) & 0x1;
1161 const GLint rowDa1
= (rowD
[k
] >> 15) & 0x1;
1162 const GLint r
= FILTER_SUM_3D(rowAr0
, rowAr1
, rowBr0
, rowBr1
,
1163 rowCr0
, rowCr1
, rowDr0
, rowDr1
);
1164 const GLint g
= FILTER_SUM_3D(rowAg0
, rowAg1
, rowBg0
, rowBg1
,
1165 rowCg0
, rowCg1
, rowDg0
, rowDg1
);
1166 const GLint b
= FILTER_SUM_3D(rowAb0
, rowAb1
, rowBb0
, rowBb1
,
1167 rowCb0
, rowCb1
, rowDb0
, rowDb1
);
1168 const GLint a
= FILTER_SUM_3D(rowAa0
, rowAa1
, rowBa0
, rowBa1
,
1169 rowCa0
, rowCa1
, rowDa0
, rowDa1
);
1171 dst
[i
] = (a
<< 15) | (b
<< 10) | (g
<< 5) | r
;
1174 else if ((datatype
== GL_UNSIGNED_SHORT_5_5_5_1
) && (comps
== 4)) {
1175 DECLARE_ROW_POINTERS0(GLushort
);
1177 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
1178 i
++, j
+= colStride
, k
+= colStride
) {
1179 const GLint rowAr0
= (rowA
[j
] >> 11) & 0x1f;
1180 const GLint rowAr1
= (rowA
[k
] >> 11) & 0x1f;
1181 const GLint rowBr0
= (rowB
[j
] >> 11) & 0x1f;
1182 const GLint rowBr1
= (rowB
[k
] >> 11) & 0x1f;
1183 const GLint rowCr0
= (rowC
[j
] >> 11) & 0x1f;
1184 const GLint rowCr1
= (rowC
[k
] >> 11) & 0x1f;
1185 const GLint rowDr0
= (rowD
[j
] >> 11) & 0x1f;
1186 const GLint rowDr1
= (rowD
[k
] >> 11) & 0x1f;
1187 const GLint rowAg0
= (rowA
[j
] >> 6) & 0x1f;
1188 const GLint rowAg1
= (rowA
[k
] >> 6) & 0x1f;
1189 const GLint rowBg0
= (rowB
[j
] >> 6) & 0x1f;
1190 const GLint rowBg1
= (rowB
[k
] >> 6) & 0x1f;
1191 const GLint rowCg0
= (rowC
[j
] >> 6) & 0x1f;
1192 const GLint rowCg1
= (rowC
[k
] >> 6) & 0x1f;
1193 const GLint rowDg0
= (rowD
[j
] >> 6) & 0x1f;
1194 const GLint rowDg1
= (rowD
[k
] >> 6) & 0x1f;
1195 const GLint rowAb0
= (rowA
[j
] >> 1) & 0x1f;
1196 const GLint rowAb1
= (rowA
[k
] >> 1) & 0x1f;
1197 const GLint rowBb0
= (rowB
[j
] >> 1) & 0x1f;
1198 const GLint rowBb1
= (rowB
[k
] >> 1) & 0x1f;
1199 const GLint rowCb0
= (rowC
[j
] >> 1) & 0x1f;
1200 const GLint rowCb1
= (rowC
[k
] >> 1) & 0x1f;
1201 const GLint rowDb0
= (rowD
[j
] >> 1) & 0x1f;
1202 const GLint rowDb1
= (rowD
[k
] >> 1) & 0x1f;
1203 const GLint rowAa0
= (rowA
[j
] & 0x1);
1204 const GLint rowAa1
= (rowA
[k
] & 0x1);
1205 const GLint rowBa0
= (rowB
[j
] & 0x1);
1206 const GLint rowBa1
= (rowB
[k
] & 0x1);
1207 const GLint rowCa0
= (rowC
[j
] & 0x1);
1208 const GLint rowCa1
= (rowC
[k
] & 0x1);
1209 const GLint rowDa0
= (rowD
[j
] & 0x1);
1210 const GLint rowDa1
= (rowD
[k
] & 0x1);
1211 const GLint r
= FILTER_SUM_3D(rowAr0
, rowAr1
, rowBr0
, rowBr1
,
1212 rowCr0
, rowCr1
, rowDr0
, rowDr1
);
1213 const GLint g
= FILTER_SUM_3D(rowAg0
, rowAg1
, rowBg0
, rowBg1
,
1214 rowCg0
, rowCg1
, rowDg0
, rowDg1
);
1215 const GLint b
= FILTER_SUM_3D(rowAb0
, rowAb1
, rowBb0
, rowBb1
,
1216 rowCb0
, rowCb1
, rowDb0
, rowDb1
);
1217 const GLint a
= FILTER_SUM_3D(rowAa0
, rowAa1
, rowBa0
, rowBa1
,
1218 rowCa0
, rowCa1
, rowDa0
, rowDa1
);
1220 dst
[i
] = (r
<< 11) | (g
<< 6) | (b
<< 1) | a
;
1223 else if ((datatype
== GL_UNSIGNED_BYTE_3_3_2
) && (comps
== 3)) {
1224 DECLARE_ROW_POINTERS0(GLubyte
);
1226 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
1227 i
++, j
+= colStride
, k
+= colStride
) {
1228 const GLint rowAr0
= rowA
[j
] & 0x3;
1229 const GLint rowAr1
= rowA
[k
] & 0x3;
1230 const GLint rowBr0
= rowB
[j
] & 0x3;
1231 const GLint rowBr1
= rowB
[k
] & 0x3;
1232 const GLint rowCr0
= rowC
[j
] & 0x3;
1233 const GLint rowCr1
= rowC
[k
] & 0x3;
1234 const GLint rowDr0
= rowD
[j
] & 0x3;
1235 const GLint rowDr1
= rowD
[k
] & 0x3;
1236 const GLint rowAg0
= (rowA
[j
] >> 2) & 0x7;
1237 const GLint rowAg1
= (rowA
[k
] >> 2) & 0x7;
1238 const GLint rowBg0
= (rowB
[j
] >> 2) & 0x7;
1239 const GLint rowBg1
= (rowB
[k
] >> 2) & 0x7;
1240 const GLint rowCg0
= (rowC
[j
] >> 2) & 0x7;
1241 const GLint rowCg1
= (rowC
[k
] >> 2) & 0x7;
1242 const GLint rowDg0
= (rowD
[j
] >> 2) & 0x7;
1243 const GLint rowDg1
= (rowD
[k
] >> 2) & 0x7;
1244 const GLint rowAb0
= (rowA
[j
] >> 5) & 0x7;
1245 const GLint rowAb1
= (rowA
[k
] >> 5) & 0x7;
1246 const GLint rowBb0
= (rowB
[j
] >> 5) & 0x7;
1247 const GLint rowBb1
= (rowB
[k
] >> 5) & 0x7;
1248 const GLint rowCb0
= (rowC
[j
] >> 5) & 0x7;
1249 const GLint rowCb1
= (rowC
[k
] >> 5) & 0x7;
1250 const GLint rowDb0
= (rowD
[j
] >> 5) & 0x7;
1251 const GLint rowDb1
= (rowD
[k
] >> 5) & 0x7;
1252 const GLint r
= FILTER_SUM_3D(rowAr0
, rowAr1
, rowBr0
, rowBr1
,
1253 rowCr0
, rowCr1
, rowDr0
, rowDr1
);
1254 const GLint g
= FILTER_SUM_3D(rowAg0
, rowAg1
, rowBg0
, rowBg1
,
1255 rowCg0
, rowCg1
, rowDg0
, rowDg1
);
1256 const GLint b
= FILTER_SUM_3D(rowAb0
, rowAb1
, rowBb0
, rowBb1
,
1257 rowCb0
, rowCb1
, rowDb0
, rowDb1
);
1258 dst
[i
] = (b
<< 5) | (g
<< 2) | r
;
1261 else if (datatype
== MESA_UNSIGNED_BYTE_4_4
&& comps
== 2) {
1262 DECLARE_ROW_POINTERS0(GLubyte
);
1264 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
1265 i
++, j
+= colStride
, k
+= colStride
) {
1266 const GLint rowAr0
= rowA
[j
] & 0xf;
1267 const GLint rowAr1
= rowA
[k
] & 0xf;
1268 const GLint rowBr0
= rowB
[j
] & 0xf;
1269 const GLint rowBr1
= rowB
[k
] & 0xf;
1270 const GLint rowCr0
= rowC
[j
] & 0xf;
1271 const GLint rowCr1
= rowC
[k
] & 0xf;
1272 const GLint rowDr0
= rowD
[j
] & 0xf;
1273 const GLint rowDr1
= rowD
[k
] & 0xf;
1274 const GLint rowAg0
= (rowA
[j
] >> 4) & 0xf;
1275 const GLint rowAg1
= (rowA
[k
] >> 4) & 0xf;
1276 const GLint rowBg0
= (rowB
[j
] >> 4) & 0xf;
1277 const GLint rowBg1
= (rowB
[k
] >> 4) & 0xf;
1278 const GLint rowCg0
= (rowC
[j
] >> 4) & 0xf;
1279 const GLint rowCg1
= (rowC
[k
] >> 4) & 0xf;
1280 const GLint rowDg0
= (rowD
[j
] >> 4) & 0xf;
1281 const GLint rowDg1
= (rowD
[k
] >> 4) & 0xf;
1282 const GLint r
= FILTER_SUM_3D(rowAr0
, rowAr1
, rowBr0
, rowBr1
,
1283 rowCr0
, rowCr1
, rowDr0
, rowDr1
);
1284 const GLint g
= FILTER_SUM_3D(rowAg0
, rowAg1
, rowBg0
, rowBg1
,
1285 rowCg0
, rowCg1
, rowDg0
, rowDg1
);
1286 dst
[i
] = (g
<< 4) | r
;
1289 else if ((datatype
== GL_UNSIGNED_INT_2_10_10_10_REV
) && (comps
== 4)) {
1290 DECLARE_ROW_POINTERS0(GLuint
);
1292 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
1293 i
++, j
+= colStride
, k
+= colStride
) {
1294 const GLint rowAr0
= rowA
[j
] & 0x3ff;
1295 const GLint rowAr1
= rowA
[k
] & 0x3ff;
1296 const GLint rowBr0
= rowB
[j
] & 0x3ff;
1297 const GLint rowBr1
= rowB
[k
] & 0x3ff;
1298 const GLint rowCr0
= rowC
[j
] & 0x3ff;
1299 const GLint rowCr1
= rowC
[k
] & 0x3ff;
1300 const GLint rowDr0
= rowD
[j
] & 0x3ff;
1301 const GLint rowDr1
= rowD
[k
] & 0x3ff;
1302 const GLint rowAg0
= (rowA
[j
] >> 10) & 0x3ff;
1303 const GLint rowAg1
= (rowA
[k
] >> 10) & 0x3ff;
1304 const GLint rowBg0
= (rowB
[j
] >> 10) & 0x3ff;
1305 const GLint rowBg1
= (rowB
[k
] >> 10) & 0x3ff;
1306 const GLint rowCg0
= (rowC
[j
] >> 10) & 0x3ff;
1307 const GLint rowCg1
= (rowC
[k
] >> 10) & 0x3ff;
1308 const GLint rowDg0
= (rowD
[j
] >> 10) & 0x3ff;
1309 const GLint rowDg1
= (rowD
[k
] >> 10) & 0x3ff;
1310 const GLint rowAb0
= (rowA
[j
] >> 20) & 0x3ff;
1311 const GLint rowAb1
= (rowA
[k
] >> 20) & 0x3ff;
1312 const GLint rowBb0
= (rowB
[j
] >> 20) & 0x3ff;
1313 const GLint rowBb1
= (rowB
[k
] >> 20) & 0x3ff;
1314 const GLint rowCb0
= (rowC
[j
] >> 20) & 0x3ff;
1315 const GLint rowCb1
= (rowC
[k
] >> 20) & 0x3ff;
1316 const GLint rowDb0
= (rowD
[j
] >> 20) & 0x3ff;
1317 const GLint rowDb1
= (rowD
[k
] >> 20) & 0x3ff;
1318 const GLint rowAa0
= (rowA
[j
] >> 30) & 0x3;
1319 const GLint rowAa1
= (rowA
[k
] >> 30) & 0x3;
1320 const GLint rowBa0
= (rowB
[j
] >> 30) & 0x3;
1321 const GLint rowBa1
= (rowB
[k
] >> 30) & 0x3;
1322 const GLint rowCa0
= (rowC
[j
] >> 30) & 0x3;
1323 const GLint rowCa1
= (rowC
[k
] >> 30) & 0x3;
1324 const GLint rowDa0
= (rowD
[j
] >> 30) & 0x3;
1325 const GLint rowDa1
= (rowD
[k
] >> 30) & 0x3;
1326 const GLint r
= FILTER_SUM_3D(rowAr0
, rowAr1
, rowBr0
, rowBr1
,
1327 rowCr0
, rowCr1
, rowDr0
, rowDr1
);
1328 const GLint g
= FILTER_SUM_3D(rowAg0
, rowAg1
, rowBg0
, rowBg1
,
1329 rowCg0
, rowCg1
, rowDg0
, rowDg1
);
1330 const GLint b
= FILTER_SUM_3D(rowAb0
, rowAb1
, rowBb0
, rowBb1
,
1331 rowCb0
, rowCb1
, rowDb0
, rowDb1
);
1332 const GLint a
= FILTER_SUM_3D(rowAa0
, rowAa1
, rowBa0
, rowBa1
,
1333 rowCa0
, rowCa1
, rowDa0
, rowDa1
);
1335 dst
[i
] = (a
<< 30) | (b
<< 20) | (g
<< 10) | r
;
1339 else if (datatype
== GL_UNSIGNED_INT_5_9_9_9_REV
&& comps
== 3) {
1340 DECLARE_ROW_POINTERS0(GLuint
);
1343 GLfloat rowAj
[3], rowBj
[3], rowCj
[3], rowDj
[3];
1344 GLfloat rowAk
[3], rowBk
[3], rowCk
[3], rowDk
[3];
1346 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
1347 i
++, j
+= colStride
, k
+= colStride
) {
1348 rgb9e5_to_float3(rowA
[j
], rowAj
);
1349 rgb9e5_to_float3(rowB
[j
], rowBj
);
1350 rgb9e5_to_float3(rowC
[j
], rowCj
);
1351 rgb9e5_to_float3(rowD
[j
], rowDj
);
1352 rgb9e5_to_float3(rowA
[k
], rowAk
);
1353 rgb9e5_to_float3(rowB
[k
], rowBk
);
1354 rgb9e5_to_float3(rowC
[k
], rowCk
);
1355 rgb9e5_to_float3(rowD
[k
], rowDk
);
1356 res
[0] = (rowAj
[0] + rowAk
[0] + rowBj
[0] + rowBk
[0] +
1357 rowCj
[0] + rowCk
[0] + rowDj
[0] + rowDk
[0]) * 0.125F
;
1358 res
[1] = (rowAj
[1] + rowAk
[1] + rowBj
[1] + rowBk
[1] +
1359 rowCj
[1] + rowCk
[1] + rowDj
[1] + rowDk
[1]) * 0.125F
;
1360 res
[2] = (rowAj
[2] + rowAk
[2] + rowBj
[2] + rowBk
[2] +
1361 rowCj
[2] + rowCk
[2] + rowDj
[2] + rowDk
[2]) * 0.125F
;
1362 dst
[i
] = float3_to_rgb9e5(res
);
1366 else if (datatype
== GL_UNSIGNED_INT_10F_11F_11F_REV
&& comps
== 3) {
1367 DECLARE_ROW_POINTERS0(GLuint
);
1370 GLfloat rowAj
[3], rowBj
[3], rowCj
[3], rowDj
[3];
1371 GLfloat rowAk
[3], rowBk
[3], rowCk
[3], rowDk
[3];
1373 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
1374 i
++, j
+= colStride
, k
+= colStride
) {
1375 r11g11b10f_to_float3(rowA
[j
], rowAj
);
1376 r11g11b10f_to_float3(rowB
[j
], rowBj
);
1377 r11g11b10f_to_float3(rowC
[j
], rowCj
);
1378 r11g11b10f_to_float3(rowD
[j
], rowDj
);
1379 r11g11b10f_to_float3(rowA
[k
], rowAk
);
1380 r11g11b10f_to_float3(rowB
[k
], rowBk
);
1381 r11g11b10f_to_float3(rowC
[k
], rowCk
);
1382 r11g11b10f_to_float3(rowD
[k
], rowDk
);
1383 res
[0] = (rowAj
[0] + rowAk
[0] + rowBj
[0] + rowBk
[0] +
1384 rowCj
[0] + rowCk
[0] + rowDj
[0] + rowDk
[0]) * 0.125F
;
1385 res
[1] = (rowAj
[1] + rowAk
[1] + rowBj
[1] + rowBk
[1] +
1386 rowCj
[1] + rowCk
[1] + rowDj
[1] + rowDk
[1]) * 0.125F
;
1387 res
[2] = (rowAj
[2] + rowAk
[2] + rowBj
[2] + rowBk
[2] +
1388 rowCj
[2] + rowCk
[2] + rowDj
[2] + rowDk
[2]) * 0.125F
;
1389 dst
[i
] = float3_to_r11g11b10f(res
);
1393 else if (datatype
== GL_FLOAT_32_UNSIGNED_INT_24_8_REV
&& comps
== 1) {
1394 DECLARE_ROW_POINTERS(GLfloat
, 2);
1396 for (i
= j
= 0, k
= k0
; i
< (GLuint
) dstWidth
;
1397 i
++, j
+= colStride
, k
+= colStride
) {
1403 _mesa_problem(NULL
, "bad format in do_row()");
1409 * These functions generate a 1/2-size mipmap image from a source image.
1410 * Texture borders are handled by copying or averaging the source image's
1411 * border texels, depending on the scale-down factor.
1415 make_1d_mipmap(GLenum datatype
, GLuint comps
, GLint border
,
1416 GLint srcWidth
, const GLubyte
*srcPtr
,
1417 GLint dstWidth
, GLubyte
*dstPtr
)
1419 const GLint bpt
= bytes_per_pixel(datatype
, comps
);
1423 /* skip the border pixel, if any */
1424 src
= srcPtr
+ border
* bpt
;
1425 dst
= dstPtr
+ border
* bpt
;
1427 /* we just duplicate the input row, kind of hack, saves code */
1428 do_row(datatype
, comps
, srcWidth
- 2 * border
, src
, src
,
1429 dstWidth
- 2 * border
, dst
);
1432 /* copy left-most pixel from source */
1435 memcpy(dstPtr
, srcPtr
, bpt
);
1436 /* copy right-most pixel from source */
1437 memcpy(dstPtr
+ (dstWidth
- 1) * bpt
,
1438 srcPtr
+ (srcWidth
- 1) * bpt
,
1445 make_2d_mipmap(GLenum datatype
, GLuint comps
, GLint border
,
1446 GLint srcWidth
, GLint srcHeight
,
1447 const GLubyte
*srcPtr
, GLint srcRowStride
,
1448 GLint dstWidth
, GLint dstHeight
,
1449 GLubyte
*dstPtr
, GLint dstRowStride
)
1451 const GLint bpt
= bytes_per_pixel(datatype
, comps
);
1452 const GLint srcWidthNB
= srcWidth
- 2 * border
; /* sizes w/out border */
1453 const GLint dstWidthNB
= dstWidth
- 2 * border
;
1454 const GLint dstHeightNB
= dstHeight
- 2 * border
;
1455 const GLubyte
*srcA
, *srcB
;
1457 GLint row
, srcRowStep
;
1459 /* Compute src and dst pointers, skipping any border */
1460 srcA
= srcPtr
+ border
* ((srcWidth
+ 1) * bpt
);
1461 if (srcHeight
> 1 && srcHeight
> dstHeight
) {
1462 /* sample from two source rows */
1463 srcB
= srcA
+ srcRowStride
;
1467 /* sample from one source row */
1472 dst
= dstPtr
+ border
* ((dstWidth
+ 1) * bpt
);
1474 for (row
= 0; row
< dstHeightNB
; row
++) {
1475 do_row(datatype
, comps
, srcWidthNB
, srcA
, srcB
,
1477 srcA
+= srcRowStep
* srcRowStride
;
1478 srcB
+= srcRowStep
* srcRowStride
;
1479 dst
+= dstRowStride
;
1482 /* This is ugly but probably won't be used much */
1484 /* fill in dest border */
1485 /* lower-left border pixel */
1488 memcpy(dstPtr
, srcPtr
, bpt
);
1489 /* lower-right border pixel */
1490 memcpy(dstPtr
+ (dstWidth
- 1) * bpt
,
1491 srcPtr
+ (srcWidth
- 1) * bpt
, bpt
);
1492 /* upper-left border pixel */
1493 memcpy(dstPtr
+ dstWidth
* (dstHeight
- 1) * bpt
,
1494 srcPtr
+ srcWidth
* (srcHeight
- 1) * bpt
, bpt
);
1495 /* upper-right border pixel */
1496 memcpy(dstPtr
+ (dstWidth
* dstHeight
- 1) * bpt
,
1497 srcPtr
+ (srcWidth
* srcHeight
- 1) * bpt
, bpt
);
1499 do_row(datatype
, comps
, srcWidthNB
,
1502 dstWidthNB
, dstPtr
+ bpt
);
1504 do_row(datatype
, comps
, srcWidthNB
,
1505 srcPtr
+ (srcWidth
* (srcHeight
- 1) + 1) * bpt
,
1506 srcPtr
+ (srcWidth
* (srcHeight
- 1) + 1) * bpt
,
1508 dstPtr
+ (dstWidth
* (dstHeight
- 1) + 1) * bpt
);
1509 /* left and right borders */
1510 if (srcHeight
== dstHeight
) {
1511 /* copy border pixel from src to dst */
1512 for (row
= 1; row
< srcHeight
; row
++) {
1513 memcpy(dstPtr
+ dstWidth
* row
* bpt
,
1514 srcPtr
+ srcWidth
* row
* bpt
, bpt
);
1515 memcpy(dstPtr
+ (dstWidth
* row
+ dstWidth
- 1) * bpt
,
1516 srcPtr
+ (srcWidth
* row
+ srcWidth
- 1) * bpt
, bpt
);
1520 /* average two src pixels each dest pixel */
1521 for (row
= 0; row
< dstHeightNB
; row
+= 2) {
1522 do_row(datatype
, comps
, 1,
1523 srcPtr
+ (srcWidth
* (row
* 2 + 1)) * bpt
,
1524 srcPtr
+ (srcWidth
* (row
* 2 + 2)) * bpt
,
1525 1, dstPtr
+ (dstWidth
* row
+ 1) * bpt
);
1526 do_row(datatype
, comps
, 1,
1527 srcPtr
+ (srcWidth
* (row
* 2 + 1) + srcWidth
- 1) * bpt
,
1528 srcPtr
+ (srcWidth
* (row
* 2 + 2) + srcWidth
- 1) * bpt
,
1529 1, dstPtr
+ (dstWidth
* row
+ 1 + dstWidth
- 1) * bpt
);
1537 make_3d_mipmap(GLenum datatype
, GLuint comps
, GLint border
,
1538 GLint srcWidth
, GLint srcHeight
, GLint srcDepth
,
1539 const GLubyte
**srcPtr
, GLint srcRowStride
,
1540 GLint dstWidth
, GLint dstHeight
, GLint dstDepth
,
1541 GLubyte
**dstPtr
, GLint dstRowStride
)
1543 const GLint bpt
= bytes_per_pixel(datatype
, comps
);
1544 const GLint srcWidthNB
= srcWidth
- 2 * border
; /* sizes w/out border */
1545 const GLint srcDepthNB
= srcDepth
- 2 * border
;
1546 const GLint dstWidthNB
= dstWidth
- 2 * border
;
1547 const GLint dstHeightNB
= dstHeight
- 2 * border
;
1548 const GLint dstDepthNB
= dstDepth
- 2 * border
;
1550 GLint bytesPerSrcImage
, bytesPerDstImage
;
1551 GLint srcImageOffset
, srcRowOffset
;
1553 (void) srcDepthNB
; /* silence warnings */
1555 bytesPerSrcImage
= srcRowStride
* srcHeight
* bpt
;
1556 bytesPerDstImage
= dstRowStride
* dstHeight
* bpt
;
1558 /* Offset between adjacent src images to be averaged together */
1559 srcImageOffset
= (srcDepth
== dstDepth
) ? 0 : 1;
1561 /* Offset between adjacent src rows to be averaged together */
1562 srcRowOffset
= (srcHeight
== dstHeight
) ? 0 : srcRowStride
;
1565 * Need to average together up to 8 src pixels for each dest pixel.
1566 * Break that down into 3 operations:
1567 * 1. take two rows from source image and average them together.
1568 * 2. take two rows from next source image and average them together.
1569 * 3. take the two averaged rows and average them for the final dst row.
1573 printf("mip3d %d x %d x %d -> %d x %d x %d\n",
1574 srcWidth, srcHeight, srcDepth, dstWidth, dstHeight, dstDepth);
1577 for (img
= 0; img
< dstDepthNB
; img
++) {
1578 /* first source image pointer, skipping border */
1579 const GLubyte
*imgSrcA
= srcPtr
[img
* 2 + border
]
1580 + srcRowStride
* border
+ bpt
* border
;
1581 /* second source image pointer, skipping border */
1582 const GLubyte
*imgSrcB
= srcPtr
[img
* 2 + srcImageOffset
+ border
]
1583 + srcRowStride
* border
+ bpt
* border
;
1585 /* address of the dest image, skipping border */
1586 GLubyte
*imgDst
= dstPtr
[img
+ border
]
1587 + dstRowStride
* border
+ bpt
* border
;
1589 /* setup the four source row pointers and the dest row pointer */
1590 const GLubyte
*srcImgARowA
= imgSrcA
;
1591 const GLubyte
*srcImgARowB
= imgSrcA
+ srcRowOffset
;
1592 const GLubyte
*srcImgBRowA
= imgSrcB
;
1593 const GLubyte
*srcImgBRowB
= imgSrcB
+ srcRowOffset
;
1594 GLubyte
*dstImgRow
= imgDst
;
1596 for (row
= 0; row
< dstHeightNB
; row
++) {
1597 do_row_3D(datatype
, comps
, srcWidthNB
,
1598 srcImgARowA
, srcImgARowB
,
1599 srcImgBRowA
, srcImgBRowB
,
1600 dstWidthNB
, dstImgRow
);
1602 /* advance to next rows */
1603 srcImgARowA
+= srcRowStride
+ srcRowOffset
;
1604 srcImgARowB
+= srcRowStride
+ srcRowOffset
;
1605 srcImgBRowA
+= srcRowStride
+ srcRowOffset
;
1606 srcImgBRowB
+= srcRowStride
+ srcRowOffset
;
1607 dstImgRow
+= dstRowStride
;
1612 /* Luckily we can leverage the make_2d_mipmap() function here! */
1614 /* do front border image */
1615 make_2d_mipmap(datatype
, comps
, 1,
1616 srcWidth
, srcHeight
, srcPtr
[0], srcRowStride
,
1617 dstWidth
, dstHeight
, dstPtr
[0], dstRowStride
);
1618 /* do back border image */
1619 make_2d_mipmap(datatype
, comps
, 1,
1620 srcWidth
, srcHeight
, srcPtr
[srcDepth
- 1], srcRowStride
,
1621 dstWidth
, dstHeight
, dstPtr
[dstDepth
- 1], dstRowStride
);
1623 /* do four remaining border edges that span the image slices */
1624 if (srcDepth
== dstDepth
) {
1625 /* just copy border pixels from src to dst */
1626 for (img
= 0; img
< dstDepthNB
; img
++) {
1630 /* do border along [img][row=0][col=0] */
1631 src
= srcPtr
[img
* 2];
1633 memcpy(dst
, src
, bpt
);
1635 /* do border along [img][row=dstHeight-1][col=0] */
1636 src
= srcPtr
[img
* 2] + (srcHeight
- 1) * srcRowStride
;
1637 dst
= dstPtr
[img
] + (dstHeight
- 1) * dstRowStride
;
1638 memcpy(dst
, src
, bpt
);
1640 /* do border along [img][row=0][col=dstWidth-1] */
1641 src
= srcPtr
[img
* 2] + (srcWidth
- 1) * bpt
;
1642 dst
= dstPtr
[img
] + (dstWidth
- 1) * bpt
;
1643 memcpy(dst
, src
, bpt
);
1645 /* do border along [img][row=dstHeight-1][col=dstWidth-1] */
1646 src
= srcPtr
[img
* 2] + (bytesPerSrcImage
- bpt
);
1647 dst
= dstPtr
[img
] + (bytesPerDstImage
- bpt
);
1648 memcpy(dst
, src
, bpt
);
1652 /* average border pixels from adjacent src image pairs */
1653 assert(srcDepthNB
== 2 * dstDepthNB
);
1654 for (img
= 0; img
< dstDepthNB
; img
++) {
1655 const GLubyte
*srcA
, *srcB
;
1658 /* do border along [img][row=0][col=0] */
1659 srcA
= srcPtr
[img
* 2 + 0];
1660 srcB
= srcPtr
[img
* 2 + srcImageOffset
];
1662 do_row(datatype
, comps
, 1, srcA
, srcB
, 1, dst
);
1664 /* do border along [img][row=dstHeight-1][col=0] */
1665 srcA
= srcPtr
[img
* 2 + 0]
1666 + (srcHeight
- 1) * srcRowStride
;
1667 srcB
= srcPtr
[img
* 2 + srcImageOffset
]
1668 + (srcHeight
- 1) * srcRowStride
;
1669 dst
= dstPtr
[img
] + (dstHeight
- 1) * dstRowStride
;
1670 do_row(datatype
, comps
, 1, srcA
, srcB
, 1, dst
);
1672 /* do border along [img][row=0][col=dstWidth-1] */
1673 srcA
= srcPtr
[img
* 2 + 0] + (srcWidth
- 1) * bpt
;
1674 srcB
= srcPtr
[img
* 2 + srcImageOffset
] + (srcWidth
- 1) * bpt
;
1675 dst
= dstPtr
[img
] + (dstWidth
- 1) * bpt
;
1676 do_row(datatype
, comps
, 1, srcA
, srcB
, 1, dst
);
1678 /* do border along [img][row=dstHeight-1][col=dstWidth-1] */
1679 srcA
= srcPtr
[img
* 2 + 0] + (bytesPerSrcImage
- bpt
);
1680 srcB
= srcPtr
[img
* 2 + srcImageOffset
] + (bytesPerSrcImage
- bpt
);
1681 dst
= dstPtr
[img
] + (bytesPerDstImage
- bpt
);
1682 do_row(datatype
, comps
, 1, srcA
, srcB
, 1, dst
);
1690 * Down-sample a texture image to produce the next lower mipmap level.
1691 * \param comps components per texel (1, 2, 3 or 4)
1692 * \param srcData array[slice] of pointers to source image slices
1693 * \param dstData array[slice] of pointers to dest image slices
1694 * \param srcRowStride stride between source rows, in bytes
1695 * \param dstRowStride stride between destination rows, in bytes
1698 _mesa_generate_mipmap_level(GLenum target
,
1699 GLenum datatype
, GLuint comps
,
1701 GLint srcWidth
, GLint srcHeight
, GLint srcDepth
,
1702 const GLubyte
**srcData
,
1704 GLint dstWidth
, GLint dstHeight
, GLint dstDepth
,
1712 make_1d_mipmap(datatype
, comps
, border
,
1713 srcWidth
, srcData
[0],
1714 dstWidth
, dstData
[0]);
1717 case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB
:
1718 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB
:
1719 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB
:
1720 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB
:
1721 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB
:
1722 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB
:
1723 make_2d_mipmap(datatype
, comps
, border
,
1724 srcWidth
, srcHeight
, srcData
[0], srcRowStride
,
1725 dstWidth
, dstHeight
, dstData
[0], dstRowStride
);
1728 make_3d_mipmap(datatype
, comps
, border
,
1729 srcWidth
, srcHeight
, srcDepth
,
1730 srcData
, srcRowStride
,
1731 dstWidth
, dstHeight
, dstDepth
,
1732 dstData
, dstRowStride
);
1734 case GL_TEXTURE_1D_ARRAY_EXT
:
1735 assert(srcHeight
== 1);
1736 assert(dstHeight
== 1);
1737 for (i
= 0; i
< dstDepth
; i
++) {
1738 make_1d_mipmap(datatype
, comps
, border
,
1739 srcWidth
, srcData
[i
],
1740 dstWidth
, dstData
[i
]);
1743 case GL_TEXTURE_2D_ARRAY_EXT
:
1744 case GL_TEXTURE_CUBE_MAP_ARRAY
:
1745 for (i
= 0; i
< dstDepth
; i
++) {
1746 make_2d_mipmap(datatype
, comps
, border
,
1747 srcWidth
, srcHeight
, srcData
[i
], srcRowStride
,
1748 dstWidth
, dstHeight
, dstData
[i
], dstRowStride
);
1751 case GL_TEXTURE_RECTANGLE_NV
:
1752 case GL_TEXTURE_EXTERNAL_OES
:
1753 /* no mipmaps, do nothing */
1756 _mesa_problem(NULL
, "bad tex target in _mesa_generate_mipmaps");
1763 * compute next (level+1) image size
1764 * \return GL_FALSE if no smaller size can be generated (eg. src is 1x1x1 size)
1767 _mesa_next_mipmap_level_size(GLenum target
, GLint border
,
1768 GLint srcWidth
, GLint srcHeight
, GLint srcDepth
,
1769 GLint
*dstWidth
, GLint
*dstHeight
, GLint
*dstDepth
)
1771 if (srcWidth
- 2 * border
> 1) {
1772 *dstWidth
= (srcWidth
- 2 * border
) / 2 + 2 * border
;
1775 *dstWidth
= srcWidth
; /* can't go smaller */
1778 if ((srcHeight
- 2 * border
> 1) &&
1779 (target
!= GL_TEXTURE_1D_ARRAY_EXT
)) {
1780 *dstHeight
= (srcHeight
- 2 * border
) / 2 + 2 * border
;
1783 *dstHeight
= srcHeight
; /* can't go smaller */
1786 if ((srcDepth
- 2 * border
> 1) &&
1787 (target
!= GL_TEXTURE_2D_ARRAY_EXT
&&
1788 target
!= GL_TEXTURE_CUBE_MAP_ARRAY
)) {
1789 *dstDepth
= (srcDepth
- 2 * border
) / 2 + 2 * border
;
1792 *dstDepth
= srcDepth
; /* can't go smaller */
1795 if (*dstWidth
== srcWidth
&&
1796 *dstHeight
== srcHeight
&&
1797 *dstDepth
== srcDepth
) {
1807 * Helper function for mipmap generation.
1808 * Make sure the specified destination mipmap level is the right size/format
1809 * for mipmap generation. If not, (re) allocate it.
1810 * \return GL_TRUE if successful, GL_FALSE if mipmap generation should stop
1813 _mesa_prepare_mipmap_level(struct gl_context
*ctx
,
1814 struct gl_texture_object
*texObj
, GLuint level
,
1815 GLsizei width
, GLsizei height
, GLsizei depth
,
1816 GLsizei border
, GLenum intFormat
, mesa_format format
)
1818 const GLuint numFaces
= _mesa_num_tex_faces(texObj
->Target
);
1821 if (texObj
->Immutable
) {
1822 /* The texture was created with glTexStorage() so the number/size of
1823 * mipmap levels is fixed and the storage for all images is already
1826 if (!texObj
->Image
[0][level
]) {
1827 /* No more levels to create - we're done */
1831 /* Nothing to do - the texture memory must have already been
1832 * allocated to the right size so we're all set.
1838 for (face
= 0; face
< numFaces
; face
++) {
1839 struct gl_texture_image
*dstImage
;
1843 target
= texObj
->Target
;
1845 target
= GL_TEXTURE_CUBE_MAP_POSITIVE_X
+ face
;
1847 dstImage
= _mesa_get_tex_image(ctx
, texObj
, target
, level
);
1853 if (dstImage
->Width
!= width
||
1854 dstImage
->Height
!= height
||
1855 dstImage
->Depth
!= depth
||
1856 dstImage
->Border
!= border
||
1857 dstImage
->InternalFormat
!= intFormat
||
1858 dstImage
->TexFormat
!= format
) {
1859 /* need to (re)allocate image */
1860 ctx
->Driver
.FreeTextureImageBuffer(ctx
, dstImage
);
1862 _mesa_init_teximage_fields(ctx
, dstImage
,
1863 width
, height
, depth
,
1864 border
, intFormat
, format
);
1866 ctx
->Driver
.AllocTextureImageBuffer(ctx
, dstImage
);
1868 /* in case the mipmap level is part of an FBO: */
1869 _mesa_update_fbo_texture(ctx
, texObj
, face
, level
);
1871 ctx
->NewState
|= _NEW_TEXTURE
;
1880 generate_mipmap_uncompressed(struct gl_context
*ctx
, GLenum target
,
1881 struct gl_texture_object
*texObj
,
1882 const struct gl_texture_image
*srcImage
,
1889 _mesa_format_to_type_and_comps(srcImage
->TexFormat
, &datatype
, &comps
);
1891 for (level
= texObj
->BaseLevel
; level
< maxLevel
; level
++) {
1892 /* generate image[level+1] from image[level] */
1893 struct gl_texture_image
*srcImage
, *dstImage
;
1894 GLint srcRowStride
, dstRowStride
;
1895 GLint srcWidth
, srcHeight
, srcDepth
;
1896 GLint dstWidth
, dstHeight
, dstDepth
;
1899 GLboolean nextLevel
;
1900 GLubyte
**srcMaps
, **dstMaps
;
1901 GLboolean success
= GL_TRUE
;
1903 /* get src image parameters */
1904 srcImage
= _mesa_select_tex_image(texObj
, target
, level
);
1906 srcWidth
= srcImage
->Width
;
1907 srcHeight
= srcImage
->Height
;
1908 srcDepth
= srcImage
->Depth
;
1909 border
= srcImage
->Border
;
1911 nextLevel
= _mesa_next_mipmap_level_size(target
, border
,
1912 srcWidth
, srcHeight
, srcDepth
,
1913 &dstWidth
, &dstHeight
, &dstDepth
);
1917 if (!_mesa_prepare_mipmap_level(ctx
, texObj
, level
+ 1,
1918 dstWidth
, dstHeight
, dstDepth
,
1919 border
, srcImage
->InternalFormat
,
1920 srcImage
->TexFormat
)) {
1924 /* get dest gl_texture_image */
1925 dstImage
= _mesa_get_tex_image(ctx
, texObj
, target
, level
+ 1);
1927 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "generating mipmaps");
1931 if (target
== GL_TEXTURE_1D_ARRAY
) {
1932 srcDepth
= srcHeight
;
1933 dstDepth
= dstHeight
;
1938 /* Map src texture image slices */
1939 srcMaps
= calloc(srcDepth
, sizeof(GLubyte
*));
1941 for (slice
= 0; slice
< srcDepth
; slice
++) {
1942 ctx
->Driver
.MapTextureImage(ctx
, srcImage
, slice
,
1943 0, 0, srcWidth
, srcHeight
,
1945 &srcMaps
[slice
], &srcRowStride
);
1946 if (!srcMaps
[slice
]) {
1956 /* Map dst texture image slices */
1957 dstMaps
= calloc(dstDepth
, sizeof(GLubyte
*));
1959 for (slice
= 0; slice
< dstDepth
; slice
++) {
1960 ctx
->Driver
.MapTextureImage(ctx
, dstImage
, slice
,
1961 0, 0, dstWidth
, dstHeight
,
1963 &dstMaps
[slice
], &dstRowStride
);
1964 if (!dstMaps
[slice
]) {
1975 /* generate one mipmap level (for 1D/2D/3D/array/etc texture) */
1976 _mesa_generate_mipmap_level(target
, datatype
, comps
, border
,
1977 srcWidth
, srcHeight
, srcDepth
,
1978 (const GLubyte
**) srcMaps
, srcRowStride
,
1979 dstWidth
, dstHeight
, dstDepth
,
1980 dstMaps
, dstRowStride
);
1983 /* Unmap src image slices */
1985 for (slice
= 0; slice
< srcDepth
; slice
++) {
1986 if (srcMaps
[slice
]) {
1987 ctx
->Driver
.UnmapTextureImage(ctx
, srcImage
, slice
);
1993 /* Unmap dst image slices */
1995 for (slice
= 0; slice
< dstDepth
; slice
++) {
1996 if (dstMaps
[slice
]) {
1997 ctx
->Driver
.UnmapTextureImage(ctx
, dstImage
, slice
);
2004 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "mipmap generation");
2007 } /* loop over mipmap levels */
2012 generate_mipmap_compressed(struct gl_context
*ctx
, GLenum target
,
2013 struct gl_texture_object
*texObj
,
2014 struct gl_texture_image
*srcImage
,
2018 mesa_format temp_format
;
2020 GLuint temp_src_row_stride
, temp_src_img_stride
; /* in bytes */
2021 GLubyte
*temp_src
= NULL
, *temp_dst
= NULL
;
2022 GLenum temp_datatype
;
2023 GLenum temp_base_format
;
2024 GLubyte
**temp_src_slices
= NULL
, **temp_dst_slices
= NULL
;
2026 /* only two types of compressed textures at this time */
2027 assert(texObj
->Target
== GL_TEXTURE_2D
||
2028 texObj
->Target
== GL_TEXTURE_2D_ARRAY
||
2029 texObj
->Target
== GL_TEXTURE_CUBE_MAP_ARB
||
2030 texObj
->Target
== GL_TEXTURE_CUBE_MAP_ARRAY
);
2033 * Choose a format for the temporary, uncompressed base image.
2034 * Then, get number of components, choose temporary image datatype,
2035 * and get base format.
2037 temp_format
= _mesa_get_uncompressed_format(srcImage
->TexFormat
);
2039 components
= _mesa_format_num_components(temp_format
);
2041 switch (_mesa_get_format_datatype(srcImage
->TexFormat
)) {
2043 temp_datatype
= GL_FLOAT
;
2045 case GL_SIGNED_NORMALIZED
:
2046 /* Revisit this if we get compressed formats with >8 bits per component */
2047 temp_datatype
= GL_BYTE
;
2050 temp_datatype
= GL_UNSIGNED_BYTE
;
2053 temp_base_format
= _mesa_get_format_base_format(temp_format
);
2056 /* allocate storage for the temporary, uncompressed image */
2057 temp_src_row_stride
= _mesa_format_row_stride(temp_format
, srcImage
->Width
);
2058 temp_src_img_stride
= _mesa_format_image_size(temp_format
, srcImage
->Width
,
2059 srcImage
->Height
, 1);
2060 temp_src
= malloc(temp_src_img_stride
* srcImage
->Depth
);
2062 /* Allocate storage for arrays of slice pointers */
2063 temp_src_slices
= malloc(srcImage
->Depth
* sizeof(GLubyte
*));
2064 temp_dst_slices
= malloc(srcImage
->Depth
* sizeof(GLubyte
*));
2066 if (!temp_src
|| !temp_src_slices
|| !temp_dst_slices
) {
2067 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "generate mipmaps");
2071 /* decompress base image to the temporary src buffer */
2073 /* save pixel packing mode */
2074 struct gl_pixelstore_attrib save
= ctx
->Pack
;
2075 /* use default/tight packing parameters */
2076 ctx
->Pack
= ctx
->DefaultPacking
;
2078 /* Get the uncompressed image */
2079 assert(srcImage
->Level
== texObj
->BaseLevel
);
2080 ctx
->Driver
.GetTexImage(ctx
,
2081 temp_base_format
, temp_datatype
,
2082 temp_src
, srcImage
);
2083 /* restore packing mode */
2087 for (level
= texObj
->BaseLevel
; level
< maxLevel
; level
++) {
2088 /* generate image[level+1] from image[level] */
2089 const struct gl_texture_image
*srcImage
;
2090 struct gl_texture_image
*dstImage
;
2091 GLint srcWidth
, srcHeight
, srcDepth
;
2092 GLint dstWidth
, dstHeight
, dstDepth
;
2094 GLboolean nextLevel
;
2095 GLuint temp_dst_row_stride
, temp_dst_img_stride
; /* in bytes */
2098 /* get src image parameters */
2099 srcImage
= _mesa_select_tex_image(texObj
, target
, level
);
2101 srcWidth
= srcImage
->Width
;
2102 srcHeight
= srcImage
->Height
;
2103 srcDepth
= srcImage
->Depth
;
2104 border
= srcImage
->Border
;
2106 nextLevel
= _mesa_next_mipmap_level_size(target
, border
,
2107 srcWidth
, srcHeight
, srcDepth
,
2108 &dstWidth
, &dstHeight
, &dstDepth
);
2112 /* Compute dst image strides and alloc memory on first iteration */
2113 temp_dst_row_stride
= _mesa_format_row_stride(temp_format
, dstWidth
);
2114 temp_dst_img_stride
= _mesa_format_image_size(temp_format
, dstWidth
,
2117 temp_dst
= malloc(temp_dst_img_stride
* dstDepth
);
2119 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "generate mipmaps");
2124 /* get dest gl_texture_image */
2125 dstImage
= _mesa_get_tex_image(ctx
, texObj
, target
, level
+ 1);
2127 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "generating mipmaps");
2131 /* for 2D arrays, setup array[depth] of slice pointers */
2132 for (i
= 0; i
< srcDepth
; i
++) {
2133 temp_src_slices
[i
] = temp_src
+ temp_src_img_stride
* i
;
2135 for (i
= 0; i
< dstDepth
; i
++) {
2136 temp_dst_slices
[i
] = temp_dst
+ temp_dst_img_stride
* i
;
2139 /* Rescale src image to dest image.
2140 * This will loop over the slices of a 2D array.
2142 _mesa_generate_mipmap_level(target
, temp_datatype
, components
, border
,
2143 srcWidth
, srcHeight
, srcDepth
,
2144 (const GLubyte
**) temp_src_slices
,
2145 temp_src_row_stride
,
2146 dstWidth
, dstHeight
, dstDepth
,
2147 temp_dst_slices
, temp_dst_row_stride
);
2149 if (!_mesa_prepare_mipmap_level(ctx
, texObj
, level
+ 1,
2150 dstWidth
, dstHeight
, dstDepth
,
2151 border
, srcImage
->InternalFormat
,
2152 srcImage
->TexFormat
)) {
2157 /* The image space was allocated above so use glTexSubImage now */
2158 ctx
->Driver
.TexSubImage(ctx
, 2, dstImage
,
2159 0, 0, 0, dstWidth
, dstHeight
, dstDepth
,
2160 temp_base_format
, temp_datatype
,
2161 temp_dst
, &ctx
->DefaultPacking
);
2163 /* swap src and dest pointers */
2165 GLubyte
*temp
= temp_src
;
2166 temp_src
= temp_dst
;
2168 temp_src_row_stride
= temp_dst_row_stride
;
2169 temp_src_img_stride
= temp_dst_img_stride
;
2171 } /* loop over mipmap levels */
2176 free(temp_src_slices
);
2177 free(temp_dst_slices
);
2181 * Automatic mipmap generation.
2182 * This is the fallback/default function for ctx->Driver.GenerateMipmap().
2183 * Generate a complete set of mipmaps from texObj's BaseLevel image.
2184 * Stop at texObj's MaxLevel or when we get to the 1x1 texture.
2185 * For cube maps, target will be one of
2186 * GL_TEXTURE_CUBE_MAP_POSITIVE/NEGATIVE_X/Y/Z; never GL_TEXTURE_CUBE_MAP.
2189 _mesa_generate_mipmap(struct gl_context
*ctx
, GLenum target
,
2190 struct gl_texture_object
*texObj
)
2192 struct gl_texture_image
*srcImage
;
2196 srcImage
= _mesa_select_tex_image(texObj
, target
, texObj
->BaseLevel
);
2199 maxLevel
= _mesa_max_texture_levels(ctx
, texObj
->Target
) - 1;
2200 assert(maxLevel
>= 0); /* bad target */
2202 maxLevel
= MIN2(maxLevel
, texObj
->MaxLevel
);
2204 if (_mesa_is_format_compressed(srcImage
->TexFormat
)) {
2205 generate_mipmap_compressed(ctx
, target
, texObj
, srcImage
, maxLevel
);
2207 generate_mipmap_uncompressed(ctx
, target
, texObj
, srcImage
, maxLevel
);