lxdream 0.9.1| filename | src/pvr2/texcache.c |
| changeset | 1256:a9d29fe74bf3 |
| prev | 1236:d93175c36387 |
| next | 1275:83b15705cdde |
| author | nkeynes |
| date | Sun Mar 04 21:28:48 2012 +1000 (12 years ago) |
| permissions | -rw-r--r-- |
| last change | Fix have_shaders in glrender.c Set negative fog for lut when using shaders |
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1 /**
2 * $Id$
3 *
4 * Texture cache. Responsible for maintaining a working set of OpenGL
5 * textures.
6 *
7 *
8 * Copyright (c) 2005 Nathan Keynes.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 */
21 #include <assert.h>
22 #include <string.h>
23 #include "pvr2/pvr2.h"
24 #include "pvr2/pvr2mmio.h"
25 #include "pvr2/glutil.h"
27 /** Specifies the maximum number of OpenGL
28 * textures we're willing to have open at a time. If more are
29 * needed, textures will be evicted in LRU order.
30 */
31 #define MAX_TEXTURES 256
33 /**
34 * Data structure:
35 *
36 * Main operations:
37 * find entry by texture_addr
38 * add new entry
39 * move entry to tail of lru list
40 * remove entry
41 */
43 typedef signed short texcache_entry_index;
44 #define EMPTY_ENTRY -1
46 static texcache_entry_index texcache_free_ptr = 0;
47 static GLuint texcache_free_list[MAX_TEXTURES];
49 typedef struct texcache_entry {
50 uint32_t texture_addr;
51 uint32_t poly2_mode, tex_mode;
52 GLuint texture_id;
53 render_buffer_t buffer;
54 texcache_entry_index next;
55 uint32_t lru_count;
56 } *texcache_entry_t;
58 static texcache_entry_index texcache_page_lookup[PVR2_RAM_PAGES];
59 static uint32_t texcache_ref_counter;
60 static struct texcache_entry texcache_active_list[MAX_TEXTURES];
61 static uint32_t texcache_palette_mode;
62 static uint32_t texcache_stride_width;
63 static gboolean texcache_have_palette_shader;
64 static gboolean texcache_palette_valid;
65 static GLuint texcache_palette_texid;
67 /**
68 * Initialize the texture cache.
69 */
70 void texcache_init( )
71 {
72 int i;
73 for( i=0; i<PVR2_RAM_PAGES; i++ ) {
74 texcache_page_lookup[i] = EMPTY_ENTRY;
75 }
76 for( i=0; i<MAX_TEXTURES; i++ ) {
77 texcache_free_list[i] = i;
78 texcache_active_list[i].texture_addr = -1;
79 texcache_active_list[i].buffer = NULL;
80 texcache_active_list[i].next = EMPTY_ENTRY;
81 }
82 texcache_free_ptr = 0;
83 texcache_ref_counter = 0;
84 texcache_palette_mode = -1;
85 texcache_stride_width = 0;
86 }
88 /**
89 * Setup the initial texture ids (must be called after the GL context is
90 * prepared)
91 */
92 void texcache_gl_init( )
93 {
94 int i;
95 GLuint texids[MAX_TEXTURES];
97 if( display_driver->capabilities.has_sl ) {
98 texcache_have_palette_shader = TRUE;
99 texcache_palette_valid = FALSE;
100 glGenTextures(1, &texcache_palette_texid );
102 /* Bind the texture and set the params */
103 glActiveTexture(GL_TEXTURE1);
104 glBindTexture(GL_TEXTURE_2D, texcache_palette_texid);
105 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
106 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
107 glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE );
108 glActiveTexture(GL_TEXTURE0);
110 } else {
111 texcache_have_palette_shader = FALSE;
112 }
114 glGenTextures( MAX_TEXTURES, texids );
115 for( i=0; i<MAX_TEXTURES; i++ ) {
116 texcache_active_list[i].texture_id = texids[i];
117 }
118 }
120 void texcache_release_render_buffer( render_buffer_t buffer )
121 {
122 if( !buffer->flushed )
123 pvr2_render_buffer_copy_to_sh4(buffer);
124 pvr2_destroy_render_buffer(buffer);
125 }
127 /**
128 * Flush all textures from the cache, returning them to the free list.
129 */
130 void texcache_flush( )
131 {
132 int i;
133 /* clear structures */
134 for( i=0; i<PVR2_RAM_PAGES; i++ ) {
135 texcache_page_lookup[i] = EMPTY_ENTRY;
136 }
137 for( i=0; i<MAX_TEXTURES; i++ ) {
138 texcache_free_list[i] = i;
139 texcache_active_list[i].next = EMPTY_ENTRY;
140 texcache_active_list[i].texture_addr = -1;
141 if( texcache_active_list[i].buffer != NULL ) {
142 texcache_release_render_buffer(texcache_active_list[i].buffer);
143 texcache_active_list[i].buffer = NULL;
144 }
145 }
146 texcache_free_ptr = 0;
147 texcache_ref_counter = 0;
148 }
150 /**
151 * Flush all textures and delete. The cache will be non-functional until
152 * the next call to texcache_init(). This would typically be done if
153 * switching GL targets.
154 */
155 void texcache_shutdown( )
156 {
157 GLuint texids[MAX_TEXTURES];
158 int i;
159 texcache_flush();
161 if( texcache_have_palette_shader )
162 glDeleteTextures( 1, &texcache_palette_texid );
164 for( i=0; i<MAX_TEXTURES; i++ ) {
165 texids[i] = texcache_active_list[i].texture_id;
166 }
167 glDeleteTextures( MAX_TEXTURES, texids );
168 }
170 static void texcache_evict( int slot )
171 {
172 /* Remove the selected slot from the lookup table */
173 assert( texcache_active_list[slot].texture_addr != -1 );
174 uint32_t evict_page = texcache_active_list[slot].texture_addr >> 12;
175 texcache_entry_index replace_next = texcache_active_list[slot].next;
176 texcache_active_list[slot].texture_addr = -1;
177 texcache_active_list[slot].next = EMPTY_ENTRY; /* Just for safety */
178 if( texcache_active_list[slot].buffer != NULL ) {
179 texcache_release_render_buffer(texcache_active_list[slot].buffer);
180 texcache_active_list[slot].buffer = NULL;
181 }
182 if( texcache_page_lookup[evict_page] == slot ) {
183 texcache_page_lookup[evict_page] = replace_next;
184 } else {
185 texcache_entry_index idx = texcache_page_lookup[evict_page];
186 texcache_entry_index next;
187 do {
188 next = texcache_active_list[idx].next;
189 if( next == slot ) {
190 assert( idx != replace_next );
191 texcache_active_list[idx].next = replace_next;
192 break;
193 }
194 idx = next;
195 } while( next != EMPTY_ENTRY );
196 }
197 }
199 /**
200 * Evict a single texture from the cache.
201 * @return the slot of the evicted texture.
202 */
203 static texcache_entry_index texcache_evict_lru( void )
204 {
205 /* Full table scan - take over the entry with the lowest lru value */
206 texcache_entry_index slot = 0;
207 int lru_value = texcache_active_list[0].lru_count;
208 int i;
209 for( i=1; i<MAX_TEXTURES; i++ ) {
210 /* FIXME: account for rollover */
211 if( texcache_active_list[i].lru_count < lru_value ) {
212 slot = i;
213 lru_value = texcache_active_list[i].lru_count;
214 }
215 }
216 texcache_evict(slot);
218 return slot;
219 }
221 /**
222 * Evict all textures contained in the page identified by a texture address.
223 */
224 void texcache_invalidate_page( uint32_t texture_addr ) {
225 uint32_t texture_page = texture_addr >> 12;
226 texcache_entry_index idx = texcache_page_lookup[texture_page];
227 if( idx == EMPTY_ENTRY )
228 return;
229 assert( texcache_free_ptr >= 0 );
230 do {
231 texcache_entry_t entry = &texcache_active_list[idx];
232 entry->texture_addr = -1;
233 if( entry->buffer != NULL ) {
234 texcache_release_render_buffer(entry->buffer);
235 entry->buffer = NULL;
236 }
237 /* release entry */
238 texcache_free_ptr--;
239 texcache_free_list[texcache_free_ptr] = idx;
240 idx = entry->next;
241 entry->next = EMPTY_ENTRY;
242 } while( idx != EMPTY_ENTRY );
243 texcache_page_lookup[texture_page] = EMPTY_ENTRY;
244 }
246 /**
247 * Load the palette into 4 textures of 256 entries each. This mirrors the
248 * banking done by the PVR2 for 8-bit textures, and also ensures that we
249 * can use 8-bit paletted textures ourselves.
250 */
251 static void texcache_load_palette_texture( gboolean format_changed )
252 {
253 GLint format, type, intFormat = GL_RGBA;
254 unsigned i;
255 int bpp = 2;
256 uint32_t *palette = (uint32_t *)mmio_region_PVR2PAL.mem;
257 uint16_t packed_palette[1024];
258 char *data = (char *)palette;
260 switch( texcache_palette_mode ) {
261 case 0: /* ARGB1555 */
262 format = GL_BGRA;
263 type = GL_UNSIGNED_SHORT_1_5_5_5_REV;
264 break;
265 case 1: /* RGB565 */
266 intFormat = GL_RGB;
267 format = GL_RGB;
268 type = GL_UNSIGNED_SHORT_5_6_5;
269 break;
270 case 2: /* ARGB4444 */
271 format = GL_BGRA;
272 type = GL_UNSIGNED_SHORT_4_4_4_4_REV;
273 break;
274 case 3: /* ARGB8888 */
275 format = GL_BGRA;
276 type = GL_UNSIGNED_BYTE;
277 bpp = 4;
278 break;
279 default:
280 break; /* Can't happen */
281 }
284 if( bpp == 2 ) {
285 for( i=0; i<1024; i++ ) {
286 packed_palette[i] = (uint16_t)palette[i];
287 }
288 data = (char *)packed_palette;
290 }
292 glActiveTexture(GL_TEXTURE1);
293 if( format_changed )
294 glTexImage2D(GL_TEXTURE_2D, 0, intFormat, 1024, 1, 0, format, type, data );
295 else
296 glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 1024, 1, format, type, data);
297 glActiveTexture(GL_TEXTURE0);
298 texcache_palette_valid = TRUE;
299 }
302 /**
303 * Mark the palette as having changed. If we have palette support (via shaders)
304 * we just flag the palette, otherwise we have to invalidate all palette
305 * textures.
306 */
307 void texcache_invalidate_palette( )
308 {
309 if( texcache_have_palette_shader ) {
310 texcache_palette_valid = FALSE;
311 } else {
312 int i;
313 for( i=0; i<MAX_TEXTURES; i++ ) {
314 if( texcache_active_list[i].texture_addr != -1 &&
315 PVR2_TEX_IS_PALETTE(texcache_active_list[i].tex_mode) ) {
316 texcache_evict( i );
317 texcache_free_ptr--;
318 texcache_free_list[texcache_free_ptr] = i;
319 }
320 }
321 }
322 }
323 /**
324 * Mark all stride textures as needing a re-read (ie when the stride width
325 * is changed).
326 */
327 void texcache_invalidate_stride( )
328 {
329 int i;
330 for( i=0; i<MAX_TEXTURES; i++ ) {
331 if( texcache_active_list[i].texture_addr != -1 &&
332 PVR2_TEX_IS_STRIDE(texcache_active_list[i].tex_mode) ) {
333 texcache_evict( i );
334 texcache_free_ptr--;
335 texcache_free_list[texcache_free_ptr] = i;
336 }
337 }
338 }
340 void texcache_begin_scene( uint32_t palette_mode, uint32_t stride )
341 {
342 gboolean format_changed = FALSE;
343 if( palette_mode != texcache_palette_mode ) {
344 texcache_invalidate_palette();
345 format_changed = TRUE;
346 }
347 if( stride != texcache_stride_width )
348 texcache_invalidate_stride();
350 texcache_palette_mode = palette_mode;
351 texcache_stride_width = stride;
353 if( !texcache_palette_valid && texcache_have_palette_shader )
354 texcache_load_palette_texture(format_changed);
355 }
357 static void decode_pal8_to_32( uint32_t *out, uint8_t *in, int inbytes, uint32_t *pal )
358 {
359 int i;
360 for( i=0; i<inbytes; i++ ) {
361 *out++ = pal[*in++];
362 }
363 }
365 static void decode_pal8_to_16( uint16_t *out, uint8_t *in, int inbytes, uint32_t *pal )
366 {
367 int i;
368 for( i=0; i<inbytes; i++ ) {
369 *out++ = (uint16_t)pal[*in++];
370 }
371 }
373 static void decode_pal4_to_32( uint32_t *out, uint8_t *in, int inbytes, uint32_t *pal )
374 {
375 int i;
376 for( i=0; i<inbytes; i++ ) {
377 *out++ = pal[*in & 0x0F];
378 *out++ = pal[(*in >> 4)];
379 in++;
380 }
381 }
383 static void decode_pal4_to_pal8( uint8_t *out, uint8_t *in, int inbytes )
384 {
385 int i;
386 for( i=0; i<inbytes; i++ ) {
387 *out++ = (uint8_t)(*in & 0x0F);
388 *out++ = (uint8_t)(*in >> 4);
389 in++;
390 }
391 }
395 static void decode_pal4_to_16( uint16_t *out, uint8_t *in, int inbytes, uint32_t *pal )
396 {
397 int i;
398 for( i=0; i<inbytes; i++ ) {
399 *out++ = (uint16_t)pal[*in & 0x0F];
400 *out++ = (uint16_t)pal[(*in >> 4)];
401 in++;
402 }
403 }
405 #define VQ_CODEBOOK_SIZE 2048 /* 256 entries * 4 pixels per quad * 2 byte pixels */
407 struct vq_codebook {
408 uint16_t quad[256][4];
409 };
411 static void vq_get_codebook( struct vq_codebook *codebook,
412 uint16_t *input )
413 {
414 /* Detwiddle the codebook, for the sake of my own sanity if nothing else */
415 uint16_t *p = (uint16_t *)input;
416 int i;
417 for( i=0; i<256; i++ ) {
418 codebook->quad[i][0] = *p++;
419 codebook->quad[i][2] = *p++;
420 codebook->quad[i][1] = *p++;
421 codebook->quad[i][3] = *p++;
422 }
423 }
425 static void vq_decode( uint16_t *output, unsigned char *input, int width, int height,
426 struct vq_codebook *codebook ) {
427 int i,j;
429 uint8_t *c = (uint8_t *)input;
430 for( j=0; j<height; j+=2 ) {
431 for( i=0; i<width; i+=2 ) {
432 uint8_t code = *c++;
433 output[i + j*width] = codebook->quad[code][0];
434 output[i + 1 + j*width] = codebook->quad[code][1];
435 output[i + (j+1)*width] = codebook->quad[code][2];
436 output[i + 1 + (j+1)*width] = codebook->quad[code][3];
437 }
438 }
439 }
441 static inline uint32_t yuv_to_rgb32( float y, float u, float v )
442 {
443 u -= 128;
444 v -= 128;
445 int r = (int)(y + v*1.375);
446 int g = (int)(y - u*0.34375 - v*0.6875);
447 int b = (int)(y + u*1.71875);
448 if( r > 255 ) { r = 255; } else if( r < 0 ) { r = 0; }
449 if( g > 255 ) { g = 255; } else if( g < 0 ) { g = 0; }
450 if( b > 255 ) { b = 255; } else if( b < 0 ) { b = 0; }
451 return 0xFF000000 | (r<<16) | (g<<8) | (b);
452 }
455 /**
456 * Convert raster YUV texture data into RGB32 data - most GL implementations don't
457 * directly support this format unfortunately. The input data is formatted as
458 * 32 bits = 2 horizontal pixels, UYVY. This is currently done rather inefficiently
459 * in floating point.
460 */
461 static void yuv_decode( uint32_t *output, uint32_t *input, int width, int height )
462 {
463 int x, y;
464 uint32_t *p = input;
465 for( y=0; y<height; y++ ) {
466 for( x=0; x<width; x+=2 ) {
467 float u = (float)(*p & 0xFF);
468 float y0 = (float)( (*p>>8)&0xFF );
469 float v = (float)( (*p>>16)&0xFF );
470 float y1 = (float)( (*p>>24)&0xFF );
471 *output++ = yuv_to_rgb32( y0, u, v );
472 *output++ = yuv_to_rgb32( y1, u, v );
473 p++;
474 }
475 }
476 }
478 static gboolean is_npot_texture( int width )
479 {
480 while( width != 0 ) {
481 if( width & 1 )
482 return width != 1;
483 width >>= 1;
484 }
485 return TRUE;
486 }
488 /**
489 * Load texture data from the given address and parameters into the currently
490 * bound OpenGL texture.
491 */
492 static void texcache_load_texture( uint32_t texture_addr, int width, int height,
493 int mode ) {
494 int bpp_shift = 1; /* bytes per (output) pixel as a power of 2 */
495 GLint intFormat = GL_RGBA, format, type;
496 int tex_format = mode & PVR2_TEX_FORMAT_MASK;
497 struct vq_codebook codebook;
498 GLint min_filter = GL_LINEAR;
499 GLint max_filter = GL_LINEAR;
500 GLint mipmapfilter = GL_LINEAR_MIPMAP_LINEAR;
502 /* Decode the format parameters */
503 switch( tex_format ) {
504 case PVR2_TEX_FORMAT_IDX4:
505 case PVR2_TEX_FORMAT_IDX8:
506 if( texcache_have_palette_shader ) {
507 intFormat = GL_ALPHA;
508 format = GL_ALPHA;
509 type = GL_UNSIGNED_BYTE;
510 bpp_shift = 0;
511 min_filter = max_filter = GL_NEAREST;
512 mipmapfilter = GL_NEAREST_MIPMAP_NEAREST;
513 } else {
514 /* For indexed-colour modes, we need to lookup the palette control
515 * word to determine the de-indexed texture format.
516 */
517 switch( texcache_palette_mode ) {
518 case 0: /* ARGB1555 */
519 format = GL_BGRA;
520 type = GL_UNSIGNED_SHORT_1_5_5_5_REV;
521 break;
522 case 1: /* RGB565 */
523 intFormat = GL_RGB;
524 format = GL_RGB;
525 type = GL_UNSIGNED_SHORT_5_6_5;
526 break;
527 case 2: /* ARGB4444 */
528 format = GL_BGRA;
529 type = GL_UNSIGNED_SHORT_4_4_4_4_REV;
530 break;
531 case 3: /* ARGB8888 */
532 format = GL_BGRA;
533 type = GL_UNSIGNED_BYTE;
534 bpp_shift = 2;
535 break;
536 default:
537 return; /* Can't happen, but it makes gcc stop complaining */
538 }
539 }
540 break;
542 default:
543 case PVR2_TEX_FORMAT_ARGB1555:
544 format = GL_BGRA;
545 type = GL_UNSIGNED_SHORT_1_5_5_5_REV;
546 break;
547 case PVR2_TEX_FORMAT_RGB565:
548 intFormat = GL_RGB;
549 format = GL_RGB;
550 type = GL_UNSIGNED_SHORT_5_6_5;
551 break;
552 case PVR2_TEX_FORMAT_ARGB4444:
553 format = GL_BGRA;
554 type = GL_UNSIGNED_SHORT_4_4_4_4_REV;
555 break;
556 case PVR2_TEX_FORMAT_YUV422:
557 /* YUV422 isn't directly supported by most implementations, so decode
558 * it to a (reasonably) standard ARGB32.
559 */
560 bpp_shift = 2;
561 format = GL_BGRA;
562 type = GL_UNSIGNED_BYTE;
563 break;
564 case PVR2_TEX_FORMAT_BUMPMAP:
565 WARN( "Bumpmap not supported" );
566 return;
567 }
569 if( PVR2_TEX_IS_STRIDE(mode) && tex_format != PVR2_TEX_FORMAT_IDX4 &&
570 tex_format != PVR2_TEX_FORMAT_IDX8 ) {
571 /* Stride textures cannot be mip-mapped, compressed, indexed or twiddled */
572 unsigned char data[(width*height) << bpp_shift];
573 if( tex_format == PVR2_TEX_FORMAT_YUV422 ) {
574 unsigned char tmp[(width*height)<<1];
575 pvr2_vram64_read_stride( tmp, width<<1, texture_addr, texcache_stride_width<<1, height );
576 yuv_decode( (uint32_t *)data, (uint32_t *)tmp, width, height );
577 } else {
578 pvr2_vram64_read_stride( data, width<<bpp_shift, texture_addr, texcache_stride_width<<bpp_shift, height );
579 }
580 glTexImage2D( GL_TEXTURE_2D, 0, intFormat, width, height, 0, format, type, data );
581 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, min_filter);
582 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, max_filter);
583 return;
584 }
586 if( PVR2_TEX_IS_COMPRESSED(mode) ) {
587 uint16_t tmp[VQ_CODEBOOK_SIZE];
588 pvr2_vram64_read( (unsigned char *)tmp, texture_addr, VQ_CODEBOOK_SIZE );
589 texture_addr += VQ_CODEBOOK_SIZE;
590 vq_get_codebook( &codebook, tmp );
591 }
593 int level=0, last_level = 0, mip_width = width, mip_height = height, src_bytes, dest_bytes;
594 if( PVR2_TEX_IS_MIPMAPPED(mode) ) {
595 uint32_t src_offset = 0;
596 min_filter = mipmapfilter;
597 mip_height = height = width;
598 while( (1<<last_level) < width ) {
599 last_level++;
600 src_offset += ((width>>last_level)*(width>>last_level));
601 }
602 if( width != 1 ) {
603 src_offset += 3;
604 }
605 if( PVR2_TEX_IS_COMPRESSED(mode) ) {
606 src_offset >>= 2;
607 } else if( tex_format == PVR2_TEX_FORMAT_IDX4 ) {
608 src_offset >>= 1;
609 } else if( tex_format == PVR2_TEX_FORMAT_YUV422 ) {
610 src_offset <<= 1;
611 } else if( tex_format != PVR2_TEX_FORMAT_IDX8 ) {
612 src_offset <<= bpp_shift;
613 }
614 texture_addr += src_offset;
615 }
618 dest_bytes = (mip_width * mip_height) << bpp_shift;
619 src_bytes = dest_bytes; // Modes will change this (below)
621 for( level=0; level<= last_level; level++ ) {
622 unsigned char data[dest_bytes];
623 /* load data from image, detwiddling/uncompressing as required */
624 if( tex_format == PVR2_TEX_FORMAT_IDX8 ) {
625 if( texcache_have_palette_shader ) {
626 pvr2_vram64_read_twiddled_8( data, texture_addr, mip_width, mip_height );
627 } else {
628 src_bytes = (mip_width * mip_height);
629 int bank = (mode >> 25) &0x03;
630 uint32_t *palette = ((uint32_t *)mmio_region_PVR2PAL.mem) + (bank<<8);
631 unsigned char tmp[src_bytes];
632 pvr2_vram64_read_twiddled_8( tmp, texture_addr, mip_width, mip_height );
633 if( bpp_shift == 2 ) {
634 decode_pal8_to_32( (uint32_t *)data, tmp, src_bytes, palette );
635 } else {
636 decode_pal8_to_16( (uint16_t *)data, tmp, src_bytes, palette );
637 }
638 }
639 } else if( tex_format == PVR2_TEX_FORMAT_IDX4 ) {
640 src_bytes = (mip_width * mip_height) >> 1;
641 unsigned char tmp[src_bytes];
642 if( texcache_have_palette_shader ) {
643 pvr2_vram64_read_twiddled_4( tmp, texture_addr, mip_width, mip_height );
644 decode_pal4_to_pal8( data, tmp, src_bytes );
645 } else {
646 int bank = (mode >>21 ) & 0x3F;
647 uint32_t *palette = ((uint32_t *)mmio_region_PVR2PAL.mem) + (bank<<4);
648 pvr2_vram64_read_twiddled_4( tmp, texture_addr, mip_width, mip_height );
649 if( bpp_shift == 2 ) {
650 decode_pal4_to_32( (uint32_t *)data, tmp, src_bytes, palette );
651 } else {
652 decode_pal4_to_16( (uint16_t *)data, tmp, src_bytes, palette );
653 }
654 }
655 } else if( tex_format == PVR2_TEX_FORMAT_YUV422 ) {
656 src_bytes = ((mip_width*mip_height)<<1);
657 unsigned char tmp[src_bytes];
658 if( PVR2_TEX_IS_TWIDDLED(mode) ) {
659 pvr2_vram64_read_twiddled_16( tmp, texture_addr, mip_width, mip_height );
660 } else {
661 pvr2_vram64_read( tmp, texture_addr, src_bytes );
662 }
663 yuv_decode( (uint32_t *)data, (uint32_t *)tmp, mip_width, mip_height );
664 } else if( PVR2_TEX_IS_COMPRESSED(mode) ) {
665 src_bytes = ((mip_width*mip_height) >> 2);
666 unsigned char tmp[src_bytes];
667 if( PVR2_TEX_IS_TWIDDLED(mode) ) {
668 pvr2_vram64_read_twiddled_8( tmp, texture_addr, mip_width>>1, mip_height>>1 );
669 } else {
670 pvr2_vram64_read( tmp, texture_addr, src_bytes );
671 }
672 vq_decode( (uint16_t *)data, tmp, mip_width, mip_height, &codebook );
673 } else if( PVR2_TEX_IS_TWIDDLED(mode) ) {
674 pvr2_vram64_read_twiddled_16( data, texture_addr, mip_width, mip_height );
675 } else {
676 pvr2_vram64_read( data, texture_addr, src_bytes );
677 }
679 /* Pass to GL */
680 if( level == last_level && level != 0 ) { /* 1x1 stored within a 2x2 */
681 glTexImage2D( GL_TEXTURE_2D, level, intFormat, 1, 1, 0, format, type,
682 data + (3 << bpp_shift) );
683 } else {
684 glTexImage2D( GL_TEXTURE_2D, level, intFormat, mip_width, mip_height, 0, format, type,
685 data );
686 if( mip_width > 2 ) {
687 mip_width >>= 1;
688 mip_height >>= 1;
689 dest_bytes >>= 2;
690 src_bytes >>= 2;
691 }
692 texture_addr -= src_bytes;
693 }
694 }
696 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, min_filter);
697 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, max_filter);
698 }
700 static int texcache_find_texture_slot( uint32_t poly2_masked_word, uint32_t texture_word )
701 {
702 uint32_t texture_addr = (texture_word & 0x000FFFFF)<<3;
703 uint32_t texture_page = texture_addr >> 12;
704 texcache_entry_index next;
705 texcache_entry_index idx = texcache_page_lookup[texture_page];
706 while( idx != EMPTY_ENTRY ) {
707 texcache_entry_t entry = &texcache_active_list[idx];
708 if( entry->tex_mode == texture_word &&
709 entry->poly2_mode == poly2_masked_word ) {
710 entry->lru_count = texcache_ref_counter++;
711 return idx;
712 }
713 idx = entry->next;
714 }
715 return -1;
716 }
718 static int texcache_alloc_texture_slot( uint32_t poly2_word, uint32_t texture_word )
719 {
720 uint32_t texture_addr = (texture_word & 0x000FFFFF)<<3;
721 uint32_t texture_page = texture_addr >> 12;
722 texcache_entry_index slot = 0;
724 if( texcache_free_ptr < MAX_TEXTURES ) {
725 slot = texcache_free_list[texcache_free_ptr++];
726 } else {
727 slot = texcache_evict_lru();
728 }
730 /* Construct new entry */
731 assert( texcache_active_list[slot].texture_addr == -1 );
732 texcache_active_list[slot].texture_addr = texture_addr;
733 texcache_active_list[slot].tex_mode = texture_word;
734 texcache_active_list[slot].poly2_mode = poly2_word;
735 texcache_active_list[slot].lru_count = texcache_ref_counter++;
737 /* Add entry to the lookup table */
738 int next = texcache_page_lookup[texture_page];
739 if( next == slot ) {
740 int i;
741 fprintf( stderr, "Active list: " );
742 for( i=0; i<MAX_TEXTURES; i++ ) {
743 fprintf( stderr, "%d, ", texcache_active_list[i].next );
744 }
745 fprintf( stderr, "\n" );
746 assert( next != slot );
748 }
749 texcache_active_list[slot].next = next;
750 texcache_page_lookup[texture_page] = slot;
751 return slot;
752 }
754 /**
755 * Return a texture ID for the texture specified at the supplied address
756 * and given parameters (the same sequence of bytes could in theory have
757 * multiple interpretations). We use the texture address as the primary
758 * index, but allow for multiple instances at each address.
759 *
760 * If the texture has already been bound, return the ID to which it was
761 * bound. Otherwise obtain an unused texture ID and set it up appropriately.
762 * The current GL_TEXTURE_2D binding will be changed in this case.
763 */
764 GLuint texcache_get_texture( uint32_t poly2_word, uint32_t texture_word )
765 {
766 poly2_word &= 0x000F803F; /* Get just the texture-relevant bits */
767 uint32_t texture_lookup = texture_word;
768 if( PVR2_TEX_IS_PALETTE(texture_lookup) ) {
769 texture_lookup &= 0xF81FFFFF; /* Mask out the bank bits */
770 }
771 int slot = texcache_find_texture_slot( poly2_word, texture_lookup );
773 if( slot == -1 ) {
774 /* Not found - check the free list */
775 slot = texcache_alloc_texture_slot( poly2_word, texture_lookup );
777 /* Construct the GL texture */
778 uint32_t texture_addr = (texture_word & 0x000FFFFF)<<3;
779 unsigned width = POLY2_TEX_WIDTH(poly2_word);
780 unsigned height = POLY2_TEX_HEIGHT(poly2_word);
782 glBindTexture( GL_TEXTURE_2D, texcache_active_list[slot].texture_id );
783 texcache_load_texture( texture_addr, width, height, texture_word );
785 /* Set texture parameters from the poly2 word */
786 if( POLY2_TEX_CLAMP_U(poly2_word) ) {
787 glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE );
788 } else if( POLY2_TEX_MIRROR_U(poly2_word) ) {
789 glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_MIRRORED_REPEAT );
790 } else {
791 glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT );
792 }
793 if( POLY2_TEX_CLAMP_V(poly2_word) ) {
794 glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );
795 } else if( POLY2_TEX_MIRROR_V(poly2_word) ) {
796 glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_MIRRORED_REPEAT );
797 } else {
798 glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT );
799 }
800 }
802 return texcache_active_list[slot].texture_id;
803 }
805 #if 0
806 render_buffer_t texcache_get_render_buffer( uint32_t texture_addr, int mode, int width, int height )
807 {
808 uint32_t texture_word = ((texture_addr >> 3) & 0x000FFFFF) | PVR2_TEX_UNTWIDDLED;
809 switch( mode ) {
810 case COLFMT_BGRA1555: texture_word |= PVR2_TEX_FORMAT_ARGB1555; break;
811 case COLFMT_RGB565: texture_word |= PVR2_TEX_FORMAT_RGB565; break;
812 case COLFMT_BGRA4444: texture_word |= PVR2_TEX_FORMAT_ARGB4444; break;
813 default:
814 WARN( "Rendering to non-texture colour format" );
815 }
816 if( is_npot_texture(width) )
817 texture_word |= PVR2_TEX_STRIDE;
820 int slot = texcache_find_texture_slot( texture_word, width, height );
821 if( slot == -1 ) {
822 slot = texcache_alloc_texture_slot( texture_word, width, height );
823 }
825 texcache_entry_t entry = &texcache_active_list[slot];
827 if( entry->buffer == NULL ) {
828 entry->buffer = pvr2_create_render_buffer( texture_addr, width, height, entry->texture_id );
829 } else if( entry->buffer->width != width || entry->buffer->height != height ) {
830 texcache_release_render_buffer(entry->buffer);
831 entry->buffer = pvr2_create_render_buffer( texture_addr, width, height, entry->texture_id );
832 }
834 return entry->buffer;
835 }
836 #endif
838 /**
839 * Check the integrity of the texcache. Verifies that every cache slot
840 * appears exactly once on either the free list or one page list. For
841 * active slots, the texture address must also match the page it appears on.
842 *
843 */
844 void texcache_integrity_check()
845 {
846 int i;
847 int slot_found[MAX_TEXTURES];
849 memset( slot_found, 0, sizeof(slot_found) );
851 /* Check entries on the free list */
852 for( i= texcache_free_ptr; i< MAX_TEXTURES; i++ ) {
853 int slot = texcache_free_list[i];
854 assert( slot_found[slot] == 0 );
855 assert( texcache_active_list[slot].next == EMPTY_ENTRY );
856 slot_found[slot] = 1;
857 }
859 /* Check entries on the active lists */
860 for( i=0; i< PVR2_RAM_PAGES; i++ ) {
861 int slot = texcache_page_lookup[i];
862 while( slot != EMPTY_ENTRY ) {
863 assert( slot_found[slot] == 0 );
864 assert( (texcache_active_list[slot].texture_addr >> 12) == i );
865 slot_found[slot] = 2;
866 slot = texcache_active_list[slot].next;
867 }
868 }
870 /* Make sure we didn't miss any entries */
871 for( i=0; i<MAX_TEXTURES; i++ ) {
872 assert( slot_found[i] != 0 );
873 }
874 }
876 /**
877 * Dump the contents of the texture cache
878 */
879 void texcache_dump()
880 {
881 unsigned i;
882 GLboolean boolresult;
883 for( i=0; i< PVR2_RAM_PAGES; i++ ) {
884 int slot = texcache_page_lookup[i];
885 while( slot != EMPTY_ENTRY ) {
886 fprintf( stderr, "%-3d: %08X %dx%d (%08X %08X) %s\n", slot,
887 texcache_active_list[slot].texture_addr,
888 POLY2_TEX_WIDTH(texcache_active_list[slot].poly2_mode),
889 POLY2_TEX_HEIGHT(texcache_active_list[slot].poly2_mode),
890 texcache_active_list[slot].poly2_mode,
891 texcache_active_list[slot].tex_mode,
892 #ifdef HAVE_OPENGL_TEX_RESIDENT
893 (glAreTexturesResident(1, &texcache_active_list[slot].texture_id, &boolresult) ? "[RESIDENT]" : "[NOT RESIDENT]")
894 #else
895 ""
896 #endif
897 );
898 slot = texcache_active_list[slot].next;
899 }
900 }
901 }
903 void texcache_print_idx4( uint32_t texture_addr, int width )
904 {
905 unsigned x,y;
906 int src_bytes = (width*width>>1);
907 char tmp[src_bytes];
908 char data[width*width];
909 pvr2_vram64_read_twiddled_4( tmp, texture_addr, width, width );
910 decode_pal4_to_pal8( data, tmp, src_bytes );
911 for( y=0; y<width; y++ ) {
912 for( x=0; x<width; x++ ) {
913 printf( "%1x", data[y*width+x] );
914 }
915 printf( "\n" );
916 }
917 }
.