1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
|
/**************************************************************************
*
* Copyright 2008 VMware, Inc.
* 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, sub license, 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 (including the
* next paragraph) 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 NON-INFRINGEMENT.
* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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.
*
**************************************************************************/
#include "pipe/p_format.h"
#include "pipe/p_defines.h"
#include "pipe/p_screen.h"
#include "util/u_format.h"
#include "util/u_debug.h"
#include "util/u_memory.h"
#include "stw_icd.h"
#include "stw_device.h"
#include "stw_pixelformat.h"
#include "stw_tls.h"
struct stw_pf_color_info
{
enum pipe_format format;
struct {
unsigned char red;
unsigned char green;
unsigned char blue;
unsigned char alpha;
} bits;
struct {
unsigned char red;
unsigned char green;
unsigned char blue;
unsigned char alpha;
} shift;
};
struct stw_pf_depth_info
{
enum pipe_format format;
struct {
unsigned char depth;
unsigned char stencil;
} bits;
};
/* NOTE: order matters, since in otherwise equal circumstances the first
* format listed will get chosen */
static const struct stw_pf_color_info
stw_pf_color[] = {
/* no-alpha */
{ PIPE_FORMAT_B8G8R8X8_UNORM, { 8, 8, 8, 0}, {16, 8, 0, 0} },
{ PIPE_FORMAT_X8R8G8B8_UNORM, { 8, 8, 8, 0}, { 8, 16, 24, 0} },
/* alpha */
{ PIPE_FORMAT_B8G8R8A8_UNORM, { 8, 8, 8, 8}, {16, 8, 0, 24} },
{ PIPE_FORMAT_A8R8G8B8_UNORM, { 8, 8, 8, 8}, { 8, 16, 24, 0} },
/* shallow bit depths */
{ PIPE_FORMAT_B5G6R5_UNORM, { 5, 6, 5, 0}, {11, 5, 0, 0} },
#if 0
{ PIPE_FORMAT_R10G10B10A2_UNORM, {10, 10, 10, 2}, { 0, 10, 20, 30} },
#endif
{ PIPE_FORMAT_B5G5R5A1_UNORM, { 5, 5, 5, 1}, {10, 5, 0, 15} },
{ PIPE_FORMAT_B4G4R4A4_UNORM, { 4, 4, 4, 4}, {16, 4, 0, 12} }
};
static const struct stw_pf_color_info
stw_pf_color_extended[] = {
{ PIPE_FORMAT_R32G32B32A32_FLOAT, {32, 32, 32, 32}, {0, 32, 64, 96} }
};
static const struct stw_pf_depth_info
stw_pf_depth_stencil[] = {
/* pure depth */
{ PIPE_FORMAT_Z32_UNORM, {32, 0} },
{ PIPE_FORMAT_X8Z24_UNORM, {24, 0} },
{ PIPE_FORMAT_Z24X8_UNORM, {24, 0} },
{ PIPE_FORMAT_Z16_UNORM, {16, 0} },
/* combined depth-stencil */
{ PIPE_FORMAT_Z24_UNORM_S8_UINT, {24, 8} },
{ PIPE_FORMAT_S8_UINT_Z24_UNORM, {24, 8} }
};
static const boolean
stw_pf_doublebuffer[] = {
FALSE,
TRUE,
};
const unsigned
stw_pf_multisample[] = {
0,
4,
8,
16
};
static void
stw_pixelformat_add(struct stw_device *stw_dev,
boolean extended,
const struct stw_pf_color_info *color,
const struct stw_pf_depth_info *depth,
unsigned accum,
boolean doublebuffer,
unsigned samples)
{
struct stw_pixelformat_info *pfi;
assert(stw_dev->pixelformat_extended_count < STW_MAX_PIXELFORMATS);
if (stw_dev->pixelformat_extended_count >= STW_MAX_PIXELFORMATS)
return;
assert(util_format_get_component_bits(color->format, UTIL_FORMAT_COLORSPACE_RGB, 0) == color->bits.red);
assert(util_format_get_component_bits(color->format, UTIL_FORMAT_COLORSPACE_RGB, 1) == color->bits.green);
assert(util_format_get_component_bits(color->format, UTIL_FORMAT_COLORSPACE_RGB, 2) == color->bits.blue);
assert(util_format_get_component_bits(color->format, UTIL_FORMAT_COLORSPACE_RGB, 3) == color->bits.alpha);
assert(util_format_get_component_bits(depth->format, UTIL_FORMAT_COLORSPACE_ZS, 0) == depth->bits.depth);
assert(util_format_get_component_bits(depth->format, UTIL_FORMAT_COLORSPACE_ZS, 1) == depth->bits.stencil);
pfi = &stw_dev->pixelformats[stw_dev->pixelformat_extended_count];
memset(pfi, 0, sizeof *pfi);
pfi->pfd.nSize = sizeof pfi->pfd;
pfi->pfd.nVersion = 1;
pfi->pfd.dwFlags = PFD_SUPPORT_OPENGL;
/* TODO: also support non-native pixel formats */
if (!extended) {
pfi->pfd.dwFlags |= PFD_DRAW_TO_WINDOW;
}
/* See http://www.opengl.org/pipeline/article/vol003_7/ */
pfi->pfd.dwFlags |= PFD_SUPPORT_COMPOSITION;
if (doublebuffer)
pfi->pfd.dwFlags |= PFD_DOUBLEBUFFER | PFD_SWAP_EXCHANGE;
pfi->pfd.iPixelType = PFD_TYPE_RGBA;
pfi->pfd.cColorBits =
color->bits.red + color->bits.green + color->bits.blue + color->bits.alpha;
pfi->pfd.cRedBits = color->bits.red;
pfi->pfd.cRedShift = color->shift.red;
pfi->pfd.cGreenBits = color->bits.green;
pfi->pfd.cGreenShift = color->shift.green;
pfi->pfd.cBlueBits = color->bits.blue;
pfi->pfd.cBlueShift = color->shift.blue;
pfi->pfd.cAlphaBits = color->bits.alpha;
pfi->pfd.cAlphaShift = color->shift.alpha;
pfi->pfd.cAccumBits = 4*accum;
pfi->pfd.cAccumRedBits = accum;
pfi->pfd.cAccumGreenBits = accum;
pfi->pfd.cAccumBlueBits = accum;
pfi->pfd.cAccumAlphaBits = accum;
pfi->pfd.cDepthBits = depth->bits.depth;
pfi->pfd.cStencilBits = depth->bits.stencil;
pfi->pfd.cAuxBuffers = 0;
pfi->pfd.iLayerType = 0;
pfi->pfd.bReserved = 0;
pfi->pfd.dwLayerMask = 0;
pfi->pfd.dwVisibleMask = 0;
pfi->pfd.dwDamageMask = 0;
/*
* since state trackers can allocate depth/stencil/accum buffers, we provide
* only color buffers here
*/
pfi->stvis.buffer_mask = ST_ATTACHMENT_FRONT_LEFT_MASK;
if (doublebuffer)
pfi->stvis.buffer_mask |= ST_ATTACHMENT_BACK_LEFT_MASK;
pfi->stvis.color_format = color->format;
pfi->stvis.depth_stencil_format = depth->format;
pfi->stvis.accum_format = (accum) ?
PIPE_FORMAT_R16G16B16A16_SNORM : PIPE_FORMAT_NONE;
pfi->stvis.samples = samples;
pfi->stvis.render_buffer = ST_ATTACHMENT_INVALID;
/* WGL_ARB_render_texture */
if (color->bits.alpha)
pfi->bindToTextureRGBA = TRUE;
pfi->bindToTextureRGB = TRUE;
++stw_dev->pixelformat_extended_count;
if (!extended) {
++stw_dev->pixelformat_count;
assert(stw_dev->pixelformat_count == stw_dev->pixelformat_extended_count);
}
}
/**
* Add the depth/stencil/accum/ms variants for a list of color formats.
*/
static unsigned
add_color_format_variants(const struct stw_pf_color_info *color_formats,
unsigned num_color_formats, boolean extended)
{
struct pipe_screen *screen = stw_dev->screen;
unsigned cfmt, ms, db, ds, acc;
unsigned bind_flags = PIPE_BIND_RENDER_TARGET;
unsigned num_added = 0;
int force_samples = 0;
/* Since GLUT for Windows doesn't support MSAA we have an env var
* to force all pixel formats to have a particular number of samples.
*/
{
const char *samples= getenv("SVGA_FORCE_MSAA");
if (samples)
force_samples = atoi(samples);
}
if (!extended) {
bind_flags |= PIPE_BIND_DISPLAY_TARGET;
}
for (ms = 0; ms < ARRAY_SIZE(stw_pf_multisample); ms++) {
unsigned samples = stw_pf_multisample[ms];
if (force_samples && samples != force_samples)
continue;
for (cfmt = 0; cfmt < num_color_formats; cfmt++) {
if (!screen->is_format_supported(screen, color_formats[cfmt].format,
PIPE_TEXTURE_2D, samples, samples,
bind_flags)) {
continue;
}
for (db = 0; db < ARRAY_SIZE(stw_pf_doublebuffer); db++) {
unsigned doublebuffer = stw_pf_doublebuffer[db];
for (ds = 0; ds < ARRAY_SIZE(stw_pf_depth_stencil); ds++) {
const struct stw_pf_depth_info *depth = &stw_pf_depth_stencil[ds];
if (!screen->is_format_supported(screen, depth->format,
PIPE_TEXTURE_2D, samples,
samples,
PIPE_BIND_DEPTH_STENCIL)) {
continue;
}
for (acc = 0; acc < 2; acc++) {
stw_pixelformat_add(stw_dev, extended, &color_formats[cfmt],
depth,
acc * 16, doublebuffer, samples);
num_added++;
}
}
}
}
}
return num_added;
}
void
stw_pixelformat_init(void)
{
unsigned num_formats;
assert(!stw_dev->pixelformat_count);
assert(!stw_dev->pixelformat_extended_count);
/* normal, displayable formats */
num_formats = add_color_format_variants(stw_pf_color,
ARRAY_SIZE(stw_pf_color), FALSE);
assert(num_formats > 0);
/* extended, pbuffer-only formats */
add_color_format_variants(stw_pf_color_extended,
ARRAY_SIZE(stw_pf_color_extended), TRUE);
assert(stw_dev->pixelformat_count <= stw_dev->pixelformat_extended_count);
assert(stw_dev->pixelformat_extended_count <= STW_MAX_PIXELFORMATS);
}
uint
stw_pixelformat_get_count(void)
{
return stw_dev->pixelformat_count;
}
uint
stw_pixelformat_get_extended_count(void)
{
return stw_dev->pixelformat_extended_count;
}
const struct stw_pixelformat_info *
stw_pixelformat_get_info(int iPixelFormat)
{
unsigned index;
if (iPixelFormat <= 0) {
return NULL;
}
index = iPixelFormat - 1;
if (index >= stw_dev->pixelformat_extended_count) {
return NULL;
}
return &stw_dev->pixelformats[index];
}
LONG APIENTRY
DrvDescribePixelFormat(HDC hdc, INT iPixelFormat, ULONG cjpfd,
PIXELFORMATDESCRIPTOR *ppfd)
{
uint count;
const struct stw_pixelformat_info *pfi;
(void) hdc;
if (!stw_dev)
return 0;
count = stw_pixelformat_get_count();
if (ppfd == NULL)
return count;
if (cjpfd != sizeof(PIXELFORMATDESCRIPTOR))
return 0;
pfi = stw_pixelformat_get_info(iPixelFormat);
if (!pfi) {
return 0;
}
memcpy(ppfd, &pfi->pfd, sizeof(PIXELFORMATDESCRIPTOR));
return count;
}
BOOL APIENTRY
DrvDescribeLayerPlane(HDC hdc, INT iPixelFormat, INT iLayerPlane,
UINT nBytes, LPLAYERPLANEDESCRIPTOR plpd)
{
assert(0);
return FALSE;
}
int APIENTRY
DrvGetLayerPaletteEntries(HDC hdc, INT iLayerPlane, INT iStart,
INT cEntries, COLORREF *pcr)
{
assert(0);
return 0;
}
int APIENTRY
DrvSetLayerPaletteEntries(HDC hdc, INT iLayerPlane, INT iStart,
INT cEntries, CONST COLORREF *pcr)
{
assert(0);
return 0;
}
BOOL APIENTRY
DrvRealizeLayerPalette(HDC hdc, INT iLayerPlane, BOOL bRealize)
{
assert(0);
return FALSE;
}
/* Only used by the wgl code, but have it here to avoid exporting the
* pixelformat.h functionality.
*/
int
stw_pixelformat_choose(HDC hdc, CONST PIXELFORMATDESCRIPTOR *ppfd)
{
uint count;
uint index;
uint bestindex;
uint bestdelta;
(void) hdc;
count = stw_pixelformat_get_extended_count();
bestindex = 0;
bestdelta = ~0U;
for (index = 1; index <= count; index++) {
uint delta = 0;
const struct stw_pixelformat_info *pfi = stw_pixelformat_get_info(index);
if (!(ppfd->dwFlags & PFD_DOUBLEBUFFER_DONTCARE) &&
!!(ppfd->dwFlags & PFD_DOUBLEBUFFER) !=
!!(pfi->pfd.dwFlags & PFD_DOUBLEBUFFER))
continue;
/* Selection logic:
* - Enabling a feature (depth, stencil...) is given highest priority.
* - Giving as many bits as requested is given medium priority.
* - Giving no more bits than requested is given lowest priority.
*/
/* FIXME: Take in account individual channel bits */
if (ppfd->cColorBits && !pfi->pfd.cColorBits)
delta += 10000;
else if (ppfd->cColorBits > pfi->pfd.cColorBits)
delta += 100;
else if (ppfd->cColorBits < pfi->pfd.cColorBits)
delta++;
if (ppfd->cDepthBits && !pfi->pfd.cDepthBits)
delta += 10000;
else if (ppfd->cDepthBits > pfi->pfd.cDepthBits)
delta += 200;
else if (ppfd->cDepthBits < pfi->pfd.cDepthBits)
delta += 2;
if (ppfd->cStencilBits && !pfi->pfd.cStencilBits)
delta += 10000;
else if (ppfd->cStencilBits > pfi->pfd.cStencilBits)
delta += 400;
else if (ppfd->cStencilBits < pfi->pfd.cStencilBits)
delta++;
if (ppfd->cAlphaBits && !pfi->pfd.cAlphaBits)
delta += 10000;
else if (ppfd->cAlphaBits > pfi->pfd.cAlphaBits)
delta += 100;
else if (ppfd->cAlphaBits < pfi->pfd.cAlphaBits)
delta++;
if (delta < bestdelta) {
bestindex = index;
bestdelta = delta;
if (bestdelta == 0)
break;
}
}
return bestindex;
}
|