filename | src/pvr2/texcache.c |
changeset | 477:9a373f2ff009 |
prev | 462:9add12452876 |
next | 561:533f6b478071 |
author | nkeynes |
date | Wed Oct 31 09:10:23 2007 +0000 (16 years ago) |
permissions | -rw-r--r-- |
last change | Add save/restore of render buffers in save states Gzip memory blocks in save states Move front-buffer management back to pvr2 Add screenshot preview when loading save states Various minor fixes and cleanups |
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nkeynes@103 | 1 | /** |
nkeynes@477 | 2 | * $Id: texcache.c,v 1.29 2007-10-31 09:10:23 nkeynes Exp $ |
nkeynes@103 | 3 | * |
nkeynes@103 | 4 | * Texture cache. Responsible for maintaining a working set of OpenGL |
nkeynes@103 | 5 | * textures. |
nkeynes@103 | 6 | * |
nkeynes@103 | 7 | * |
nkeynes@103 | 8 | * Copyright (c) 2005 Nathan Keynes. |
nkeynes@103 | 9 | * |
nkeynes@103 | 10 | * This program is free software; you can redistribute it and/or modify |
nkeynes@103 | 11 | * it under the terms of the GNU General Public License as published by |
nkeynes@103 | 12 | * the Free Software Foundation; either version 2 of the License, or |
nkeynes@103 | 13 | * (at your option) any later version. |
nkeynes@103 | 14 | * |
nkeynes@103 | 15 | * This program is distributed in the hope that it will be useful, |
nkeynes@103 | 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
nkeynes@103 | 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
nkeynes@103 | 18 | * GNU General Public License for more details. |
nkeynes@103 | 19 | */ |
nkeynes@103 | 20 | |
nkeynes@103 | 21 | #include <assert.h> |
nkeynes@103 | 22 | #include "pvr2/pvr2.h" |
nkeynes@103 | 23 | |
nkeynes@103 | 24 | /** Specifies the maximum number of OpenGL |
nkeynes@103 | 25 | * textures we're willing to have open at a time. If more are |
nkeynes@103 | 26 | * needed, textures will be evicted in LRU order. |
nkeynes@103 | 27 | */ |
nkeynes@349 | 28 | #define MAX_TEXTURES 256 |
nkeynes@103 | 29 | |
nkeynes@103 | 30 | /** |
nkeynes@103 | 31 | * Data structure: |
nkeynes@103 | 32 | * |
nkeynes@103 | 33 | * Main operations: |
nkeynes@103 | 34 | * find entry by texture_addr |
nkeynes@103 | 35 | * add new entry |
nkeynes@103 | 36 | * move entry to tail of lru list |
nkeynes@103 | 37 | * remove entry |
nkeynes@103 | 38 | */ |
nkeynes@103 | 39 | |
nkeynes@103 | 40 | typedef signed short texcache_entry_index; |
nkeynes@462 | 41 | #define EMPTY_ENTRY -1 |
nkeynes@103 | 42 | |
nkeynes@107 | 43 | static texcache_entry_index texcache_free_ptr = 0; |
nkeynes@103 | 44 | static GLuint texcache_free_list[MAX_TEXTURES]; |
nkeynes@103 | 45 | |
nkeynes@103 | 46 | typedef struct texcache_entry { |
nkeynes@103 | 47 | uint32_t texture_addr; |
nkeynes@103 | 48 | int width, height, mode; |
nkeynes@103 | 49 | GLuint texture_id; |
nkeynes@103 | 50 | texcache_entry_index next; |
nkeynes@103 | 51 | uint32_t lru_count; |
nkeynes@103 | 52 | } *texcache_entry_t; |
nkeynes@103 | 53 | |
nkeynes@462 | 54 | static texcache_entry_index texcache_page_lookup[PVR2_RAM_PAGES]; |
nkeynes@103 | 55 | static uint32_t texcache_ref_counter; |
nkeynes@103 | 56 | static struct texcache_entry texcache_active_list[MAX_TEXTURES]; |
nkeynes@103 | 57 | |
nkeynes@103 | 58 | /** |
nkeynes@108 | 59 | * Initialize the texture cache. |
nkeynes@103 | 60 | */ |
nkeynes@103 | 61 | void texcache_init( ) |
nkeynes@103 | 62 | { |
nkeynes@103 | 63 | int i; |
nkeynes@103 | 64 | for( i=0; i<PVR2_RAM_PAGES; i++ ) { |
nkeynes@103 | 65 | texcache_page_lookup[i] = EMPTY_ENTRY; |
nkeynes@103 | 66 | } |
nkeynes@103 | 67 | for( i=0; i<MAX_TEXTURES; i++ ) { |
nkeynes@103 | 68 | texcache_free_list[i] = i; |
nkeynes@337 | 69 | texcache_active_list[i].texture_addr = -1; |
nkeynes@103 | 70 | } |
nkeynes@103 | 71 | texcache_free_ptr = 0; |
nkeynes@103 | 72 | texcache_ref_counter = 0; |
nkeynes@103 | 73 | } |
nkeynes@103 | 74 | |
nkeynes@103 | 75 | /** |
nkeynes@108 | 76 | * Setup the initial texture ids (must be called after the GL context is |
nkeynes@108 | 77 | * prepared) |
nkeynes@108 | 78 | */ |
nkeynes@108 | 79 | void texcache_gl_init( ) |
nkeynes@108 | 80 | { |
nkeynes@108 | 81 | int i; |
nkeynes@108 | 82 | GLuint texids[MAX_TEXTURES]; |
nkeynes@108 | 83 | |
nkeynes@108 | 84 | glGenTextures( MAX_TEXTURES, texids ); |
nkeynes@108 | 85 | for( i=0; i<MAX_TEXTURES; i++ ) { |
nkeynes@108 | 86 | texcache_active_list[i].texture_id = texids[i]; |
nkeynes@108 | 87 | } |
nkeynes@108 | 88 | } |
nkeynes@108 | 89 | |
nkeynes@108 | 90 | /** |
nkeynes@103 | 91 | * Flush all textures from the cache, returning them to the free list. |
nkeynes@103 | 92 | */ |
nkeynes@103 | 93 | void texcache_flush( ) |
nkeynes@103 | 94 | { |
nkeynes@103 | 95 | int i; |
nkeynes@103 | 96 | /* clear structures */ |
nkeynes@103 | 97 | for( i=0; i<PVR2_RAM_PAGES; i++ ) { |
nkeynes@103 | 98 | texcache_page_lookup[i] = EMPTY_ENTRY; |
nkeynes@103 | 99 | } |
nkeynes@103 | 100 | for( i=0; i<MAX_TEXTURES; i++ ) { |
nkeynes@103 | 101 | texcache_free_list[i] = i; |
nkeynes@103 | 102 | } |
nkeynes@103 | 103 | texcache_free_ptr = 0; |
nkeynes@103 | 104 | texcache_ref_counter = 0; |
nkeynes@103 | 105 | } |
nkeynes@103 | 106 | |
nkeynes@103 | 107 | /** |
nkeynes@103 | 108 | * Flush all textures and delete. The cache will be non-functional until |
nkeynes@103 | 109 | * the next call to texcache_init(). This would typically be done if |
nkeynes@103 | 110 | * switching GL targets. |
nkeynes@103 | 111 | */ |
nkeynes@103 | 112 | void texcache_shutdown( ) |
nkeynes@103 | 113 | { |
nkeynes@103 | 114 | GLuint texids[MAX_TEXTURES]; |
nkeynes@103 | 115 | int i; |
nkeynes@103 | 116 | texcache_flush(); |
nkeynes@103 | 117 | |
nkeynes@103 | 118 | for( i=0; i<MAX_TEXTURES; i++ ) { |
nkeynes@103 | 119 | texids[i] = texcache_active_list[i].texture_id; |
nkeynes@103 | 120 | } |
nkeynes@103 | 121 | glDeleteTextures( MAX_TEXTURES, texids ); |
nkeynes@103 | 122 | } |
nkeynes@103 | 123 | |
nkeynes@337 | 124 | static void texcache_evict( int slot ) |
nkeynes@103 | 125 | { |
nkeynes@103 | 126 | /* Remove the selected slot from the lookup table */ |
nkeynes@462 | 127 | assert( texcache_active_list[slot].texture_addr != -1 ); |
nkeynes@270 | 128 | uint32_t evict_page = texcache_active_list[slot].texture_addr >> 12; |
nkeynes@103 | 129 | texcache_entry_index replace_next = texcache_active_list[slot].next; |
nkeynes@337 | 130 | texcache_active_list[slot].texture_addr = -1; |
nkeynes@103 | 131 | texcache_active_list[slot].next = EMPTY_ENTRY; /* Just for safety */ |
nkeynes@103 | 132 | if( texcache_page_lookup[evict_page] == slot ) { |
nkeynes@103 | 133 | texcache_page_lookup[evict_page] = replace_next; |
nkeynes@103 | 134 | } else { |
nkeynes@103 | 135 | texcache_entry_index idx = texcache_page_lookup[evict_page]; |
nkeynes@103 | 136 | texcache_entry_index next; |
nkeynes@103 | 137 | do { |
nkeynes@103 | 138 | next = texcache_active_list[idx].next; |
nkeynes@103 | 139 | if( next == slot ) { |
nkeynes@462 | 140 | assert( idx != replace_next ); |
nkeynes@103 | 141 | texcache_active_list[idx].next = replace_next; |
nkeynes@103 | 142 | break; |
nkeynes@103 | 143 | } |
nkeynes@103 | 144 | idx = next; |
nkeynes@103 | 145 | } while( next != EMPTY_ENTRY ); |
nkeynes@103 | 146 | } |
nkeynes@337 | 147 | } |
nkeynes@337 | 148 | |
nkeynes@337 | 149 | /** |
nkeynes@337 | 150 | * Evict a single texture from the cache. |
nkeynes@337 | 151 | * @return the slot of the evicted texture. |
nkeynes@337 | 152 | */ |
nkeynes@337 | 153 | static texcache_entry_index texcache_evict_lru( void ) |
nkeynes@337 | 154 | { |
nkeynes@337 | 155 | /* Full table scan - take over the entry with the lowest lru value */ |
nkeynes@337 | 156 | texcache_entry_index slot = 0; |
nkeynes@337 | 157 | int lru_value = texcache_active_list[0].lru_count; |
nkeynes@337 | 158 | int i; |
nkeynes@337 | 159 | for( i=1; i<MAX_TEXTURES; i++ ) { |
nkeynes@337 | 160 | /* FIXME: account for rollover */ |
nkeynes@337 | 161 | if( texcache_active_list[i].lru_count < lru_value ) { |
nkeynes@337 | 162 | slot = i; |
nkeynes@337 | 163 | lru_value = texcache_active_list[i].lru_count; |
nkeynes@337 | 164 | } |
nkeynes@337 | 165 | } |
nkeynes@337 | 166 | texcache_evict(slot); |
nkeynes@337 | 167 | |
nkeynes@103 | 168 | return slot; |
nkeynes@103 | 169 | } |
nkeynes@103 | 170 | |
nkeynes@337 | 171 | /** |
nkeynes@337 | 172 | * Evict all textures contained in the page identified by a texture address. |
nkeynes@337 | 173 | */ |
nkeynes@337 | 174 | void texcache_invalidate_page( uint32_t texture_addr ) { |
nkeynes@337 | 175 | uint32_t texture_page = texture_addr >> 12; |
nkeynes@337 | 176 | texcache_entry_index idx = texcache_page_lookup[texture_page]; |
nkeynes@337 | 177 | if( idx == EMPTY_ENTRY ) |
nkeynes@337 | 178 | return; |
nkeynes@337 | 179 | assert( texcache_free_ptr >= 0 ); |
nkeynes@337 | 180 | do { |
nkeynes@337 | 181 | texcache_entry_t entry = &texcache_active_list[idx]; |
nkeynes@337 | 182 | entry->texture_addr = -1; |
nkeynes@337 | 183 | /* release entry */ |
nkeynes@337 | 184 | texcache_free_ptr--; |
nkeynes@337 | 185 | texcache_free_list[texcache_free_ptr] = idx; |
nkeynes@337 | 186 | idx = entry->next; |
nkeynes@337 | 187 | entry->next = EMPTY_ENTRY; |
nkeynes@337 | 188 | } while( idx != EMPTY_ENTRY ); |
nkeynes@337 | 189 | texcache_page_lookup[texture_page] = EMPTY_ENTRY; |
nkeynes@337 | 190 | } |
nkeynes@337 | 191 | |
nkeynes@337 | 192 | /** |
nkeynes@337 | 193 | * Mark all textures that use the palette table as needing a re-read (ie |
nkeynes@337 | 194 | * for when the palette is changed. We could track exactly which ones are |
nkeynes@337 | 195 | * affected, but it's not clear that the extra maintanence overhead is |
nkeynes@337 | 196 | * worthwhile. |
nkeynes@337 | 197 | */ |
nkeynes@337 | 198 | void texcache_invalidate_palette( ) |
nkeynes@337 | 199 | { |
nkeynes@337 | 200 | int i; |
nkeynes@337 | 201 | for( i=0; i<MAX_TEXTURES; i++ ) { |
nkeynes@337 | 202 | if( texcache_active_list[i].texture_addr != -1 && |
nkeynes@337 | 203 | PVR2_TEX_IS_PALETTE(texcache_active_list[i].mode) ) { |
nkeynes@337 | 204 | texcache_evict( i ); |
nkeynes@462 | 205 | texcache_free_ptr--; |
nkeynes@462 | 206 | texcache_free_list[texcache_free_ptr] = i; |
nkeynes@337 | 207 | } |
nkeynes@337 | 208 | } |
nkeynes@337 | 209 | } |
nkeynes@337 | 210 | |
nkeynes@311 | 211 | static void decode_pal8_to_32( uint32_t *out, uint8_t *in, int inbytes, uint32_t *pal ) |
nkeynes@311 | 212 | { |
nkeynes@311 | 213 | int i; |
nkeynes@311 | 214 | for( i=0; i<inbytes; i++ ) { |
nkeynes@311 | 215 | *out++ = pal[*in++]; |
nkeynes@129 | 216 | } |
nkeynes@129 | 217 | } |
nkeynes@129 | 218 | |
nkeynes@321 | 219 | static void decode_pal8_to_16( uint16_t *out, uint8_t *in, int inbytes, uint32_t *pal ) |
nkeynes@311 | 220 | { |
nkeynes@311 | 221 | int i; |
nkeynes@311 | 222 | for( i=0; i<inbytes; i++ ) { |
nkeynes@321 | 223 | *out++ = (uint16_t)pal[*in++]; |
nkeynes@113 | 224 | } |
nkeynes@113 | 225 | } |
nkeynes@113 | 226 | |
nkeynes@315 | 227 | static void decode_pal4_to_32( uint32_t *out, uint8_t *in, int inbytes, uint32_t *pal ) |
nkeynes@315 | 228 | { |
nkeynes@315 | 229 | int i; |
nkeynes@315 | 230 | for( i=0; i<inbytes; i++ ) { |
nkeynes@315 | 231 | *out++ = pal[*in & 0x0F]; |
nkeynes@315 | 232 | *out++ = pal[(*in >> 4)]; |
nkeynes@315 | 233 | in++; |
nkeynes@315 | 234 | } |
nkeynes@315 | 235 | } |
nkeynes@315 | 236 | |
nkeynes@315 | 237 | |
nkeynes@321 | 238 | static void decode_pal4_to_16( uint16_t *out, uint8_t *in, int inbytes, uint32_t *pal ) |
nkeynes@315 | 239 | { |
nkeynes@315 | 240 | int i; |
nkeynes@315 | 241 | for( i=0; i<inbytes; i++ ) { |
nkeynes@321 | 242 | *out++ = (uint16_t)pal[*in & 0x0F]; |
nkeynes@321 | 243 | *out++ = (uint16_t)pal[(*in >> 4)]; |
nkeynes@315 | 244 | in++; |
nkeynes@315 | 245 | } |
nkeynes@315 | 246 | } |
nkeynes@315 | 247 | |
nkeynes@224 | 248 | #define VQ_CODEBOOK_SIZE 2048 /* 256 entries * 4 pixels per quad * 2 byte pixels */ |
nkeynes@224 | 249 | |
nkeynes@224 | 250 | struct vq_codebook { |
nkeynes@224 | 251 | uint16_t quad[256][4]; |
nkeynes@224 | 252 | }; |
nkeynes@224 | 253 | |
nkeynes@270 | 254 | static void vq_get_codebook( struct vq_codebook *codebook, |
nkeynes@270 | 255 | uint16_t *input ) |
nkeynes@270 | 256 | { |
nkeynes@270 | 257 | /* Detwiddle the codebook, for the sake of my own sanity if nothing else */ |
nkeynes@270 | 258 | uint16_t *p = (uint16_t *)input; |
nkeynes@270 | 259 | int i; |
nkeynes@270 | 260 | for( i=0; i<256; i++ ) { |
nkeynes@270 | 261 | codebook->quad[i][0] = *p++; |
nkeynes@270 | 262 | codebook->quad[i][2] = *p++; |
nkeynes@270 | 263 | codebook->quad[i][1] = *p++; |
nkeynes@270 | 264 | codebook->quad[i][3] = *p++; |
nkeynes@270 | 265 | } |
nkeynes@270 | 266 | } |
nkeynes@270 | 267 | |
nkeynes@429 | 268 | static void vq_decode( uint16_t *output, unsigned char *input, int width, int height, |
nkeynes@311 | 269 | struct vq_codebook *codebook ) { |
nkeynes@224 | 270 | int i,j; |
nkeynes@224 | 271 | |
nkeynes@270 | 272 | uint8_t *c = (uint8_t *)input; |
nkeynes@311 | 273 | for( j=0; j<height; j+=2 ) { |
nkeynes@311 | 274 | for( i=0; i<width; i+=2 ) { |
nkeynes@313 | 275 | uint8_t code = *c++; |
nkeynes@311 | 276 | output[i + j*width] = codebook->quad[code][0]; |
nkeynes@311 | 277 | output[i + 1 + j*width] = codebook->quad[code][1]; |
nkeynes@311 | 278 | output[i + (j+1)*width] = codebook->quad[code][2]; |
nkeynes@311 | 279 | output[i + 1 + (j+1)*width] = codebook->quad[code][3]; |
nkeynes@224 | 280 | } |
nkeynes@224 | 281 | } |
nkeynes@224 | 282 | } |
nkeynes@113 | 283 | |
nkeynes@282 | 284 | static inline uint32_t yuv_to_rgb32( float y, float u, float v ) |
nkeynes@282 | 285 | { |
nkeynes@282 | 286 | u -= 128; |
nkeynes@282 | 287 | v -= 128; |
nkeynes@282 | 288 | int r = (int)(y + v*1.375); |
nkeynes@282 | 289 | int g = (int)(y - u*0.34375 - v*0.6875); |
nkeynes@282 | 290 | int b = (int)(y + u*1.71875); |
nkeynes@282 | 291 | if( r > 255 ) { r = 255; } else if( r < 0 ) { r = 0; } |
nkeynes@282 | 292 | if( g > 255 ) { g = 255; } else if( g < 0 ) { g = 0; } |
nkeynes@282 | 293 | if( b > 255 ) { b = 255; } else if( b < 0 ) { b = 0; } |
nkeynes@289 | 294 | return 0xFF000000 | (r<<16) | (g<<8) | (b); |
nkeynes@282 | 295 | } |
nkeynes@282 | 296 | |
nkeynes@282 | 297 | |
nkeynes@282 | 298 | /** |
nkeynes@311 | 299 | * Convert raster YUV texture data into RGB32 data - most GL implementations don't |
nkeynes@282 | 300 | * directly support this format unfortunately. The input data is formatted as |
nkeynes@282 | 301 | * 32 bits = 2 horizontal pixels, UYVY. This is currently done rather inefficiently |
nkeynes@282 | 302 | * in floating point. |
nkeynes@282 | 303 | */ |
nkeynes@311 | 304 | static void yuv_decode( uint32_t *output, uint32_t *input, int width, int height ) |
nkeynes@282 | 305 | { |
nkeynes@282 | 306 | int x, y; |
nkeynes@282 | 307 | uint32_t *p = input; |
nkeynes@282 | 308 | for( y=0; y<height; y++ ) { |
nkeynes@282 | 309 | for( x=0; x<width; x+=2 ) { |
nkeynes@282 | 310 | float u = (float)(*p & 0xFF); |
nkeynes@282 | 311 | float y0 = (float)( (*p>>8)&0xFF ); |
nkeynes@282 | 312 | float v = (float)( (*p>>16)&0xFF ); |
nkeynes@282 | 313 | float y1 = (float)( (*p>>24)&0xFF ); |
nkeynes@282 | 314 | *output++ = yuv_to_rgb32( y0, u, v ); |
nkeynes@282 | 315 | *output++ = yuv_to_rgb32( y1, u, v ); |
nkeynes@287 | 316 | p++; |
nkeynes@282 | 317 | } |
nkeynes@282 | 318 | } |
nkeynes@282 | 319 | } |
nkeynes@282 | 320 | |
nkeynes@103 | 321 | /** |
nkeynes@103 | 322 | * Load texture data from the given address and parameters into the currently |
nkeynes@103 | 323 | * bound OpenGL texture. |
nkeynes@103 | 324 | */ |
nkeynes@429 | 325 | static void texcache_load_texture( uint32_t texture_addr, int width, int height, |
nkeynes@103 | 326 | int mode ) { |
nkeynes@284 | 327 | int bpp_shift = 1; /* bytes per (output) pixel as a power of 2 */ |
nkeynes@349 | 328 | GLint intFormat = GL_RGBA, format, type; |
nkeynes@108 | 329 | int tex_format = mode & PVR2_TEX_FORMAT_MASK; |
nkeynes@270 | 330 | struct vq_codebook codebook; |
nkeynes@270 | 331 | GLint filter = GL_LINEAR; |
nkeynes@108 | 332 | |
nkeynes@352 | 333 | glPixelStorei( GL_UNPACK_ROW_LENGTH, 0 ); |
nkeynes@270 | 334 | /* Decode the format parameters */ |
nkeynes@270 | 335 | switch( tex_format ) { |
nkeynes@270 | 336 | case PVR2_TEX_FORMAT_IDX4: |
nkeynes@270 | 337 | case PVR2_TEX_FORMAT_IDX8: |
nkeynes@284 | 338 | /* For indexed-colour modes, we need to lookup the palette control |
nkeynes@284 | 339 | * word to determine the de-indexed texture format. |
nkeynes@284 | 340 | */ |
nkeynes@191 | 341 | switch( MMIO_READ( PVR2, RENDER_PALETTE ) & 0x03 ) { |
nkeynes@108 | 342 | case 0: /* ARGB1555 */ |
nkeynes@329 | 343 | format = GL_BGRA; |
nkeynes@129 | 344 | type = GL_UNSIGNED_SHORT_1_5_5_5_REV; |
nkeynes@108 | 345 | break; |
nkeynes@284 | 346 | case 1: /* RGB565 */ |
nkeynes@349 | 347 | intFormat = GL_RGB; |
nkeynes@108 | 348 | format = GL_RGB; |
nkeynes@300 | 349 | type = GL_UNSIGNED_SHORT_5_6_5; |
nkeynes@108 | 350 | break; |
nkeynes@284 | 351 | case 2: /* ARGB4444 */ |
nkeynes@129 | 352 | format = GL_BGRA; |
nkeynes@129 | 353 | type = GL_UNSIGNED_SHORT_4_4_4_4_REV; |
nkeynes@108 | 354 | break; |
nkeynes@284 | 355 | case 3: /* ARGB8888 */ |
nkeynes@113 | 356 | format = GL_BGRA; |
nkeynes@477 | 357 | type = GL_UNSIGNED_BYTE; |
nkeynes@284 | 358 | bpp_shift = 2; |
nkeynes@108 | 359 | break; |
nkeynes@429 | 360 | default: |
nkeynes@429 | 361 | return; /* Can't happen, but it makes gcc stop complaining */ |
nkeynes@108 | 362 | } |
nkeynes@270 | 363 | break; |
nkeynes@270 | 364 | |
nkeynes@270 | 365 | case PVR2_TEX_FORMAT_ARGB1555: |
nkeynes@329 | 366 | format = GL_BGRA; |
nkeynes@270 | 367 | type = GL_UNSIGNED_SHORT_1_5_5_5_REV; |
nkeynes@270 | 368 | break; |
nkeynes@270 | 369 | case PVR2_TEX_FORMAT_RGB565: |
nkeynes@349 | 370 | intFormat = GL_RGB; |
nkeynes@270 | 371 | format = GL_RGB; |
nkeynes@300 | 372 | type = GL_UNSIGNED_SHORT_5_6_5; |
nkeynes@270 | 373 | break; |
nkeynes@270 | 374 | case PVR2_TEX_FORMAT_ARGB4444: |
nkeynes@270 | 375 | format = GL_BGRA; |
nkeynes@270 | 376 | type = GL_UNSIGNED_SHORT_4_4_4_4_REV; |
nkeynes@270 | 377 | break; |
nkeynes@270 | 378 | case PVR2_TEX_FORMAT_YUV422: |
nkeynes@284 | 379 | /* YUV422 isn't directly supported by most implementations, so decode |
nkeynes@284 | 380 | * it to a (reasonably) standard ARGB32. |
nkeynes@284 | 381 | */ |
nkeynes@284 | 382 | bpp_shift = 2; |
nkeynes@282 | 383 | format = GL_BGRA; |
nkeynes@477 | 384 | type = GL_UNSIGNED_BYTE; |
nkeynes@270 | 385 | break; |
nkeynes@270 | 386 | case PVR2_TEX_FORMAT_BUMPMAP: |
nkeynes@270 | 387 | ERROR( "Bumpmap not supported" ); |
nkeynes@429 | 388 | return; |
nkeynes@429 | 389 | default: |
nkeynes@429 | 390 | ERROR( "Undefined texture format" ); |
nkeynes@429 | 391 | return; |
nkeynes@270 | 392 | } |
nkeynes@270 | 393 | |
nkeynes@321 | 394 | if( PVR2_TEX_IS_STRIDE(mode) && tex_format != PVR2_TEX_FORMAT_IDX4 && |
nkeynes@321 | 395 | tex_format != PVR2_TEX_FORMAT_IDX8 ) { |
nkeynes@284 | 396 | /* Stride textures cannot be mip-mapped, compressed, indexed or twiddled */ |
nkeynes@284 | 397 | uint32_t stride = (MMIO_READ( PVR2, RENDER_TEXSIZE ) & 0x003F) << 5; |
nkeynes@429 | 398 | unsigned char data[(width*height) << bpp_shift]; |
nkeynes@284 | 399 | if( tex_format == PVR2_TEX_FORMAT_YUV422 ) { |
nkeynes@429 | 400 | unsigned char tmp[(width*height)<<1]; |
nkeynes@291 | 401 | pvr2_vram64_read_stride( tmp, width<<1, texture_addr, stride<<1, height ); |
nkeynes@311 | 402 | yuv_decode( (uint32_t *)data, (uint32_t *)tmp, width, height ); |
nkeynes@284 | 403 | } else { |
nkeynes@291 | 404 | pvr2_vram64_read_stride( data, width<<bpp_shift, texture_addr, stride<<bpp_shift, height ); |
nkeynes@284 | 405 | } |
nkeynes@284 | 406 | glTexImage2D( GL_TEXTURE_2D, 0, intFormat, width, height, 0, format, type, data ); |
nkeynes@284 | 407 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filter); |
nkeynes@284 | 408 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); |
nkeynes@284 | 409 | return; |
nkeynes@284 | 410 | } |
nkeynes@284 | 411 | |
nkeynes@349 | 412 | int level=0, last_level = 0, mip_width = width, mip_height = height, src_bytes, dest_bytes; |
nkeynes@270 | 413 | if( PVR2_TEX_IS_MIPMAPPED(mode) ) { |
nkeynes@270 | 414 | int i; |
nkeynes@311 | 415 | for( i=0; 1<<i < width; i++ ); |
nkeynes@270 | 416 | last_level = i; |
nkeynes@313 | 417 | mip_width = 2; |
nkeynes@313 | 418 | mip_height= 2; |
nkeynes@270 | 419 | filter = GL_LINEAR_MIPMAP_LINEAR; |
nkeynes@270 | 420 | } |
nkeynes@349 | 421 | dest_bytes = (mip_width * mip_height) << bpp_shift; |
nkeynes@349 | 422 | src_bytes = dest_bytes; // Modes will change this (below) |
nkeynes@108 | 423 | |
nkeynes@270 | 424 | if( PVR2_TEX_IS_COMPRESSED(mode) ) { |
nkeynes@270 | 425 | uint16_t tmp[VQ_CODEBOOK_SIZE]; |
nkeynes@429 | 426 | pvr2_vram64_read( (unsigned char *)tmp, texture_addr, VQ_CODEBOOK_SIZE ); |
nkeynes@270 | 427 | texture_addr += VQ_CODEBOOK_SIZE; |
nkeynes@270 | 428 | vq_get_codebook( &codebook, tmp ); |
nkeynes@270 | 429 | } |
nkeynes@270 | 430 | |
nkeynes@270 | 431 | for( level=last_level; level>= 0; level-- ) { |
nkeynes@429 | 432 | unsigned char data[dest_bytes]; |
nkeynes@270 | 433 | /* load data from image, detwiddling/uncompressing as required */ |
nkeynes@108 | 434 | if( tex_format == PVR2_TEX_FORMAT_IDX8 ) { |
nkeynes@349 | 435 | src_bytes = (mip_width * mip_height); |
nkeynes@108 | 436 | int bank = (mode >> 25) &0x03; |
nkeynes@324 | 437 | uint32_t *palette = ((uint32_t *)mmio_region_PVR2PAL.mem) + (bank<<8); |
nkeynes@429 | 438 | unsigned char tmp[src_bytes]; |
nkeynes@311 | 439 | pvr2_vram64_read_twiddled_8( tmp, texture_addr, mip_width, mip_height ); |
nkeynes@284 | 440 | if( bpp_shift == 2 ) { |
nkeynes@349 | 441 | decode_pal8_to_32( (uint32_t *)data, tmp, src_bytes, palette ); |
nkeynes@113 | 442 | } else { |
nkeynes@349 | 443 | decode_pal8_to_16( (uint16_t *)data, tmp, src_bytes, palette ); |
nkeynes@108 | 444 | } |
nkeynes@315 | 445 | } else if( tex_format == PVR2_TEX_FORMAT_IDX4 ) { |
nkeynes@349 | 446 | src_bytes = (mip_width * mip_height) >> 1; |
nkeynes@315 | 447 | int bank = (mode >>21 ) & 0x3F; |
nkeynes@324 | 448 | uint32_t *palette = ((uint32_t *)mmio_region_PVR2PAL.mem) + (bank<<4); |
nkeynes@429 | 449 | unsigned char tmp[src_bytes]; |
nkeynes@315 | 450 | pvr2_vram64_read_twiddled_4( tmp, texture_addr, mip_width, mip_height ); |
nkeynes@315 | 451 | if( bpp_shift == 2 ) { |
nkeynes@349 | 452 | decode_pal4_to_32( (uint32_t *)data, tmp, src_bytes, palette ); |
nkeynes@315 | 453 | } else { |
nkeynes@349 | 454 | decode_pal4_to_16( (uint16_t *)data, tmp, src_bytes, palette ); |
nkeynes@315 | 455 | } |
nkeynes@282 | 456 | } else if( tex_format == PVR2_TEX_FORMAT_YUV422 ) { |
nkeynes@349 | 457 | src_bytes = ((mip_width*mip_height)<<1); |
nkeynes@429 | 458 | unsigned char tmp[src_bytes]; |
nkeynes@314 | 459 | if( PVR2_TEX_IS_TWIDDLED(mode) ) { |
nkeynes@314 | 460 | pvr2_vram64_read_twiddled_16( tmp, texture_addr, mip_width, mip_height ); |
nkeynes@314 | 461 | } else { |
nkeynes@349 | 462 | pvr2_vram64_read( tmp, texture_addr, src_bytes ); |
nkeynes@314 | 463 | } |
nkeynes@311 | 464 | yuv_decode( (uint32_t *)data, (uint32_t *)tmp, mip_width, mip_height ); |
nkeynes@270 | 465 | } else if( PVR2_TEX_IS_COMPRESSED(mode) ) { |
nkeynes@349 | 466 | src_bytes = ((mip_width*mip_height) >> 2); |
nkeynes@429 | 467 | unsigned char tmp[src_bytes]; |
nkeynes@311 | 468 | if( PVR2_TEX_IS_TWIDDLED(mode) ) { |
nkeynes@313 | 469 | pvr2_vram64_read_twiddled_8( tmp, texture_addr, mip_width>>1, mip_height>>1 ); |
nkeynes@311 | 470 | } else { |
nkeynes@349 | 471 | pvr2_vram64_read( tmp, texture_addr, src_bytes ); |
nkeynes@311 | 472 | } |
nkeynes@311 | 473 | vq_decode( (uint16_t *)data, tmp, mip_width, mip_height, &codebook ); |
nkeynes@270 | 474 | } else if( PVR2_TEX_IS_TWIDDLED(mode) ) { |
nkeynes@311 | 475 | pvr2_vram64_read_twiddled_16( data, texture_addr, mip_width, mip_height ); |
nkeynes@270 | 476 | } else { |
nkeynes@349 | 477 | pvr2_vram64_read( data, texture_addr, src_bytes ); |
nkeynes@108 | 478 | } |
nkeynes@313 | 479 | |
nkeynes@108 | 480 | /* Pass to GL */ |
nkeynes@313 | 481 | if( level == last_level && level != 0 ) { /* 1x1 stored within a 2x2 */ |
nkeynes@313 | 482 | glTexImage2D( GL_TEXTURE_2D, level, intFormat, 1, 1, 0, format, type, |
nkeynes@313 | 483 | data + (3 << bpp_shift) ); |
nkeynes@349 | 484 | texture_addr += src_bytes; |
nkeynes@313 | 485 | } else { |
nkeynes@313 | 486 | glTexImage2D( GL_TEXTURE_2D, level, intFormat, mip_width, mip_height, 0, format, type, |
nkeynes@313 | 487 | data ); |
nkeynes@349 | 488 | texture_addr += src_bytes; |
nkeynes@313 | 489 | mip_width <<= 1; |
nkeynes@313 | 490 | mip_height <<= 1; |
nkeynes@349 | 491 | dest_bytes <<= 2; |
nkeynes@349 | 492 | src_bytes <<= 2; |
nkeynes@313 | 493 | } |
nkeynes@103 | 494 | } |
nkeynes@270 | 495 | |
nkeynes@270 | 496 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filter); |
nkeynes@108 | 497 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); |
nkeynes@103 | 498 | } |
nkeynes@103 | 499 | |
nkeynes@103 | 500 | /** |
nkeynes@103 | 501 | * Return a texture ID for the texture specified at the supplied address |
nkeynes@103 | 502 | * and given parameters (the same sequence of bytes could in theory have |
nkeynes@103 | 503 | * multiple interpretations). We use the texture address as the primary |
nkeynes@103 | 504 | * index, but allow for multiple instances at each address. The texture |
nkeynes@103 | 505 | * will be bound to the GL_TEXTURE_2D target before being returned. |
nkeynes@103 | 506 | * |
nkeynes@103 | 507 | * If the texture has already been bound, return the ID to which it was |
nkeynes@103 | 508 | * bound. Otherwise obtain an unused texture ID and set it up appropriately. |
nkeynes@103 | 509 | */ |
nkeynes@103 | 510 | GLuint texcache_get_texture( uint32_t texture_addr, int width, int height, |
nkeynes@103 | 511 | int mode ) |
nkeynes@103 | 512 | { |
nkeynes@103 | 513 | uint32_t texture_page = texture_addr >> 12; |
nkeynes@462 | 514 | texcache_entry_index next; |
nkeynes@103 | 515 | texcache_entry_index idx = texcache_page_lookup[texture_page]; |
nkeynes@103 | 516 | while( idx != EMPTY_ENTRY ) { |
nkeynes@103 | 517 | texcache_entry_t entry = &texcache_active_list[idx]; |
nkeynes@103 | 518 | if( entry->texture_addr == texture_addr && |
nkeynes@103 | 519 | entry->mode == mode && |
nkeynes@103 | 520 | entry->width == width && |
nkeynes@103 | 521 | entry->height == height ) { |
nkeynes@103 | 522 | entry->lru_count = texcache_ref_counter++; |
nkeynes@103 | 523 | glBindTexture( GL_TEXTURE_2D, entry->texture_id ); |
nkeynes@103 | 524 | return entry->texture_id; |
nkeynes@103 | 525 | } |
nkeynes@103 | 526 | idx = entry->next; |
nkeynes@103 | 527 | } |
nkeynes@103 | 528 | |
nkeynes@103 | 529 | /* Not found - check the free list */ |
nkeynes@462 | 530 | texcache_entry_index slot = 0; |
nkeynes@103 | 531 | |
nkeynes@103 | 532 | if( texcache_free_ptr < MAX_TEXTURES ) { |
nkeynes@103 | 533 | slot = texcache_free_list[texcache_free_ptr++]; |
nkeynes@103 | 534 | } else { |
nkeynes@337 | 535 | slot = texcache_evict_lru(); |
nkeynes@103 | 536 | } |
nkeynes@103 | 537 | |
nkeynes@103 | 538 | /* Construct new entry */ |
nkeynes@103 | 539 | texcache_active_list[slot].texture_addr = texture_addr; |
nkeynes@103 | 540 | texcache_active_list[slot].width = width; |
nkeynes@103 | 541 | texcache_active_list[slot].height = height; |
nkeynes@103 | 542 | texcache_active_list[slot].mode = mode; |
nkeynes@103 | 543 | texcache_active_list[slot].lru_count = texcache_ref_counter++; |
nkeynes@103 | 544 | |
nkeynes@103 | 545 | /* Add entry to the lookup table */ |
nkeynes@462 | 546 | next = texcache_page_lookup[texture_page]; |
nkeynes@462 | 547 | if( next == slot ) { |
nkeynes@462 | 548 | int i; |
nkeynes@462 | 549 | fprintf( stderr, "Active list: " ); |
nkeynes@462 | 550 | for( i=0; i<MAX_TEXTURES; i++ ) { |
nkeynes@462 | 551 | fprintf( stderr, "%d, ", texcache_active_list[i].next ); |
nkeynes@462 | 552 | } |
nkeynes@462 | 553 | fprintf( stderr, "\n" ); |
nkeynes@462 | 554 | assert( next != slot ); |
nkeynes@462 | 555 | |
nkeynes@462 | 556 | } |
nkeynes@462 | 557 | assert( next != slot ); |
nkeynes@462 | 558 | texcache_active_list[slot].next = next; |
nkeynes@103 | 559 | texcache_page_lookup[texture_page] = slot; |
nkeynes@103 | 560 | |
nkeynes@103 | 561 | /* Construct the GL texture */ |
nkeynes@108 | 562 | glBindTexture( GL_TEXTURE_2D, texcache_active_list[slot].texture_id ); |
nkeynes@103 | 563 | texcache_load_texture( texture_addr, width, height, mode ); |
nkeynes@103 | 564 | |
nkeynes@103 | 565 | return texcache_active_list[slot].texture_id; |
nkeynes@103 | 566 | } |
.