nkeynes@103: /**
nkeynes@561:  * $Id$
nkeynes@103:  *
nkeynes@103:  * Texture cache. Responsible for maintaining a working set of OpenGL 
nkeynes@103:  * textures. 
nkeynes@103:  *
nkeynes@103:  *
nkeynes@103:  * Copyright (c) 2005 Nathan Keynes.
nkeynes@103:  *
nkeynes@103:  * This program is free software; you can redistribute it and/or modify
nkeynes@103:  * it under the terms of the GNU General Public License as published by
nkeynes@103:  * the Free Software Foundation; either version 2 of the License, or
nkeynes@103:  * (at your option) any later version.
nkeynes@103:  *
nkeynes@103:  * This program is distributed in the hope that it will be useful,
nkeynes@103:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
nkeynes@103:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
nkeynes@103:  * GNU General Public License for more details.
nkeynes@103:  */
nkeynes@103: 
nkeynes@103: #include <assert.h>
nkeynes@647: #include <string.h>
nkeynes@103: #include "pvr2/pvr2.h"
nkeynes@677: #include "pvr2/pvr2mmio.h"
nkeynes@1140: #include "pvr2/glutil.h"
nkeynes@103: 
nkeynes@103: /** Specifies the maximum number of OpenGL
nkeynes@103:  * textures we're willing to have open at a time. If more are
nkeynes@103:  * needed, textures will be evicted in LRU order.
nkeynes@103:  */
nkeynes@349: #define MAX_TEXTURES 256
nkeynes@103: 
nkeynes@103: /**
nkeynes@103:  * Data structure:
nkeynes@103:  *
nkeynes@103:  * Main operations:
nkeynes@103:  *    find entry by texture_addr
nkeynes@103:  *    add new entry
nkeynes@103:  *    move entry to tail of lru list
nkeynes@103:  *    remove entry
nkeynes@103:  */
nkeynes@103: 
nkeynes@103: typedef signed short texcache_entry_index;
nkeynes@462: #define EMPTY_ENTRY -1
nkeynes@103: 
nkeynes@107: static texcache_entry_index texcache_free_ptr = 0;
nkeynes@103: static GLuint texcache_free_list[MAX_TEXTURES];
nkeynes@103: 
nkeynes@103: typedef struct texcache_entry {
nkeynes@103:     uint32_t texture_addr;
nkeynes@1135:     uint32_t poly2_mode, tex_mode;
nkeynes@103:     GLuint texture_id;
nkeynes@856:     render_buffer_t buffer;
nkeynes@103:     texcache_entry_index next;
nkeynes@103:     uint32_t lru_count;
nkeynes@103: } *texcache_entry_t;
nkeynes@103: 
nkeynes@462: static texcache_entry_index texcache_page_lookup[PVR2_RAM_PAGES];
nkeynes@103: static uint32_t texcache_ref_counter;
nkeynes@103: static struct texcache_entry texcache_active_list[MAX_TEXTURES];
nkeynes@886: static uint32_t texcache_palette_mode;
nkeynes@886: static uint32_t texcache_stride_width;
nkeynes@1140: static gboolean texcache_have_palette_shader;
nkeynes@1140: static gboolean texcache_palette_valid;
nkeynes@1140: static GLuint texcache_palette_texid;
nkeynes@103: 
nkeynes@103: /**
nkeynes@108:  * Initialize the texture cache.
nkeynes@103:  */
nkeynes@103: void texcache_init( )
nkeynes@103: {
nkeynes@103:     int i;
nkeynes@103:     for( i=0; i<PVR2_RAM_PAGES; i++ ) {
nkeynes@736:         texcache_page_lookup[i] = EMPTY_ENTRY;
nkeynes@103:     }
nkeynes@103:     for( i=0; i<MAX_TEXTURES; i++ ) {
nkeynes@736:         texcache_free_list[i] = i;
nkeynes@736:         texcache_active_list[i].texture_addr = -1;
nkeynes@856:         texcache_active_list[i].buffer = NULL;
nkeynes@736:         texcache_active_list[i].next = EMPTY_ENTRY;
nkeynes@103:     }
nkeynes@103:     texcache_free_ptr = 0;
nkeynes@103:     texcache_ref_counter = 0;
nkeynes@1140:     texcache_palette_mode = -1;
nkeynes@886:     texcache_stride_width = 0;
nkeynes@103: }
nkeynes@103: 
nkeynes@103: /**
nkeynes@108:  * Setup the initial texture ids (must be called after the GL context is
nkeynes@108:  * prepared)
nkeynes@108:  */
nkeynes@1233: void texcache_gl_init( gboolean withShaders )
nkeynes@108: {
nkeynes@108:     int i;
nkeynes@108:     GLuint texids[MAX_TEXTURES];
nkeynes@108: 
nkeynes@1233:     if( withShaders ) {
nkeynes@1140:         texcache_have_palette_shader = TRUE;
nkeynes@1140:         texcache_palette_valid = FALSE;
nkeynes@1140:         glGenTextures(1, &texcache_palette_texid );
nkeynes@1140: 
nkeynes@1140:         /* Bind the texture and set the params */
nkeynes@1140:         glActiveTexture(GL_TEXTURE1);
nkeynes@1221:         glBindTexture(GL_TEXTURE_2D, texcache_palette_texid);
nkeynes@1221:         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
nkeynes@1221:         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
nkeynes@1221:         glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE );
nkeynes@1140:         glActiveTexture(GL_TEXTURE0);
nkeynes@1140: 
nkeynes@1140:     } else {
nkeynes@1140:         texcache_have_palette_shader = FALSE;
nkeynes@1140:     }
nkeynes@1140: 
nkeynes@108:     glGenTextures( MAX_TEXTURES, texids );
nkeynes@108:     for( i=0; i<MAX_TEXTURES; i++ ) {
nkeynes@736:         texcache_active_list[i].texture_id = texids[i];
nkeynes@108:     }
nkeynes@108: }
nkeynes@108: 
nkeynes@856: void texcache_release_render_buffer( render_buffer_t buffer )
nkeynes@856: {
nkeynes@856:     if( !buffer->flushed ) 
nkeynes@856:         pvr2_render_buffer_copy_to_sh4(buffer);
nkeynes@856:     pvr2_destroy_render_buffer(buffer);
nkeynes@856: }
nkeynes@856: 
nkeynes@108: /**
nkeynes@103:  * Flush all textures from the cache, returning them to the free list.
nkeynes@103:  */
nkeynes@103: void texcache_flush( )
nkeynes@103: {
nkeynes@103:     int i;
nkeynes@103:     /* clear structures */
nkeynes@103:     for( i=0; i<PVR2_RAM_PAGES; i++ ) {
nkeynes@736:         texcache_page_lookup[i] = EMPTY_ENTRY;
nkeynes@103:     }
nkeynes@103:     for( i=0; i<MAX_TEXTURES; i++ ) {
nkeynes@736:         texcache_free_list[i] = i;
nkeynes@736:         texcache_active_list[i].next = EMPTY_ENTRY;
nkeynes@886:         texcache_active_list[i].texture_addr = -1;
nkeynes@856:         if( texcache_active_list[i].buffer != NULL ) {
nkeynes@856:             texcache_release_render_buffer(texcache_active_list[i].buffer);
nkeynes@856:             texcache_active_list[i].buffer = NULL;
nkeynes@856:         }
nkeynes@103:     }
nkeynes@103:     texcache_free_ptr = 0;
nkeynes@103:     texcache_ref_counter = 0;
nkeynes@103: }
nkeynes@103: 
nkeynes@103: /**
nkeynes@103:  * Flush all textures and delete. The cache will be non-functional until
nkeynes@103:  * the next call to texcache_init(). This would typically be done if
nkeynes@103:  * switching GL targets.
nkeynes@103:  */    
nkeynes@103: void texcache_shutdown( )
nkeynes@103: {
nkeynes@103:     GLuint texids[MAX_TEXTURES];
nkeynes@103:     int i;
nkeynes@103:     texcache_flush();
nkeynes@736: 
nkeynes@1140:     if( texcache_have_palette_shader )
nkeynes@1140:         glDeleteTextures( 1, &texcache_palette_texid );
nkeynes@1140: 
nkeynes@103:     for( i=0; i<MAX_TEXTURES; i++ ) {
nkeynes@736:         texids[i] = texcache_active_list[i].texture_id;
nkeynes@103:     }
nkeynes@103:     glDeleteTextures( MAX_TEXTURES, texids );
nkeynes@103: }
nkeynes@103: 
nkeynes@337: static void texcache_evict( int slot )
nkeynes@103: {
nkeynes@103:     /* Remove the selected slot from the lookup table */
nkeynes@462:     assert( texcache_active_list[slot].texture_addr != -1 );
nkeynes@270:     uint32_t evict_page = texcache_active_list[slot].texture_addr >> 12;
nkeynes@103:     texcache_entry_index replace_next = texcache_active_list[slot].next;
nkeynes@337:     texcache_active_list[slot].texture_addr = -1;
nkeynes@103:     texcache_active_list[slot].next = EMPTY_ENTRY; /* Just for safety */
nkeynes@856:     if( texcache_active_list[slot].buffer != NULL ) {
nkeynes@856:         texcache_release_render_buffer(texcache_active_list[slot].buffer);
nkeynes@856:         texcache_active_list[slot].buffer = NULL;
nkeynes@856:     }
nkeynes@103:     if( texcache_page_lookup[evict_page] == slot ) {
nkeynes@736:         texcache_page_lookup[evict_page] = replace_next;
nkeynes@103:     } else {
nkeynes@736:         texcache_entry_index idx = texcache_page_lookup[evict_page];
nkeynes@736:         texcache_entry_index next;
nkeynes@736:         do {
nkeynes@736:             next = texcache_active_list[idx].next;
nkeynes@736:             if( next == slot ) {
nkeynes@736:                 assert( idx != replace_next );
nkeynes@736:                 texcache_active_list[idx].next = replace_next;
nkeynes@736:                 break;
nkeynes@736:             }
nkeynes@736:             idx = next;
nkeynes@736:         } while( next != EMPTY_ENTRY );
nkeynes@103:     }
nkeynes@337: }
nkeynes@337: 
nkeynes@337: /**
nkeynes@337:  * Evict a single texture from the cache.
nkeynes@337:  * @return the slot of the evicted texture.
nkeynes@337:  */
nkeynes@337: static texcache_entry_index texcache_evict_lru( void )
nkeynes@337: {
nkeynes@337:     /* Full table scan - take over the entry with the lowest lru value */
nkeynes@337:     texcache_entry_index slot = 0;
nkeynes@337:     int lru_value = texcache_active_list[0].lru_count;
nkeynes@337:     int i;
nkeynes@337:     for( i=1; i<MAX_TEXTURES; i++ ) {
nkeynes@736:         /* FIXME: account for rollover */
nkeynes@736:         if( texcache_active_list[i].lru_count < lru_value ) {
nkeynes@736:             slot = i;
nkeynes@736:             lru_value = texcache_active_list[i].lru_count;
nkeynes@736:         }
nkeynes@337:     }
nkeynes@337:     texcache_evict(slot);
nkeynes@736: 
nkeynes@103:     return slot;
nkeynes@103: }
nkeynes@103: 
nkeynes@337: /**
nkeynes@337:  * Evict all textures contained in the page identified by a texture address.
nkeynes@337:  */
nkeynes@337: void texcache_invalidate_page( uint32_t texture_addr ) {
nkeynes@337:     uint32_t texture_page = texture_addr >> 12;
nkeynes@337:     texcache_entry_index idx = texcache_page_lookup[texture_page];
nkeynes@337:     if( idx == EMPTY_ENTRY )
nkeynes@736:         return;
nkeynes@337:     assert( texcache_free_ptr >= 0 );
nkeynes@337:     do {
nkeynes@736:         texcache_entry_t entry = &texcache_active_list[idx];
nkeynes@736:         entry->texture_addr = -1;
nkeynes@856:         if( entry->buffer != NULL ) {
nkeynes@856:             texcache_release_render_buffer(entry->buffer);
nkeynes@856:             entry->buffer = NULL;
nkeynes@856:         }
nkeynes@736:         /* release entry */
nkeynes@736:         texcache_free_ptr--;
nkeynes@736:         texcache_free_list[texcache_free_ptr] = idx;
nkeynes@736:         idx = entry->next;
nkeynes@736:         entry->next = EMPTY_ENTRY;
nkeynes@337:     } while( idx != EMPTY_ENTRY );
nkeynes@337:     texcache_page_lookup[texture_page] = EMPTY_ENTRY;
nkeynes@337: }
nkeynes@337: 
nkeynes@337: /**
nkeynes@1140:  * Load the palette into 4 textures of 256 entries each. This mirrors the
nkeynes@1140:  * banking done by the PVR2 for 8-bit textures, and also ensures that we
nkeynes@1140:  * can use 8-bit paletted textures ourselves.
nkeynes@1140:  */
nkeynes@1140: static void texcache_load_palette_texture( gboolean format_changed )
nkeynes@1140: {
nkeynes@1140:     GLint format, type, intFormat = GL_RGBA;
nkeynes@1140:     unsigned i;
nkeynes@1140:     int bpp = 2;
nkeynes@1140:     uint32_t *palette = (uint32_t *)mmio_region_PVR2PAL.mem;
nkeynes@1140:     uint16_t packed_palette[1024];
nkeynes@1140:     char *data = (char *)palette;
nkeynes@1140: 
nkeynes@1140:     switch( texcache_palette_mode ) {
nkeynes@1140:     case 0: /* ARGB1555 */
nkeynes@1140:         format = GL_BGRA;
nkeynes@1140:         type = GL_UNSIGNED_SHORT_1_5_5_5_REV;
nkeynes@1140:         break;
nkeynes@1140:     case 1:  /* RGB565 */
nkeynes@1140:         intFormat = GL_RGB;
nkeynes@1140:         format = GL_RGB;
nkeynes@1140:         type = GL_UNSIGNED_SHORT_5_6_5;
nkeynes@1140:         break;
nkeynes@1140:     case 2: /* ARGB4444 */
nkeynes@1140:         format = GL_BGRA;
nkeynes@1140:         type = GL_UNSIGNED_SHORT_4_4_4_4_REV;
nkeynes@1140:         break;
nkeynes@1140:     case 3: /* ARGB8888 */
nkeynes@1140:         format = GL_BGRA;
nkeynes@1140:         type = GL_UNSIGNED_BYTE;
nkeynes@1140:         bpp = 4;
nkeynes@1140:         break;
nkeynes@1140:     default:
nkeynes@1140:         break; /* Can't happen */
nkeynes@1140:     }
nkeynes@1140: 
nkeynes@1140: 
nkeynes@1140:     if( bpp == 2 ) {
nkeynes@1140:         for( i=0; i<1024; i++ ) {
nkeynes@1140:             packed_palette[i] = (uint16_t)palette[i];
nkeynes@1140:         }
nkeynes@1140:         data = (char *)packed_palette;
nkeynes@1140: 
nkeynes@1140:     }
nkeynes@1140: 
nkeynes@1140:     glActiveTexture(GL_TEXTURE1);
nkeynes@1140:     if( format_changed )
nkeynes@1221:         glTexImage2D(GL_TEXTURE_2D, 0, intFormat, 1024, 1, 0, format, type, data );
nkeynes@1140:     else
nkeynes@1221:         glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 1024, 1, format, type, data);
nkeynes@1140:     glActiveTexture(GL_TEXTURE0);
nkeynes@1140:     texcache_palette_valid = TRUE;
nkeynes@1140: }
nkeynes@1140: 
nkeynes@1140: 
nkeynes@1140: /**
nkeynes@1140:  * Mark the palette as having changed. If we have palette support (via shaders)
nkeynes@1140:  * we just flag the palette, otherwise we have to invalidate all palette
nkeynes@1140:  * textures.
nkeynes@337:  */
nkeynes@337: void texcache_invalidate_palette( )
nkeynes@337: {
nkeynes@1140:     if( texcache_have_palette_shader ) {
nkeynes@1140:         texcache_palette_valid = FALSE;
nkeynes@1140:     } else {
nkeynes@1140:         int i;
nkeynes@1140:         for( i=0; i<MAX_TEXTURES; i++ ) {
nkeynes@1140:             if( texcache_active_list[i].texture_addr != -1 &&
nkeynes@1140:                     PVR2_TEX_IS_PALETTE(texcache_active_list[i].tex_mode) ) {
nkeynes@1140:                 texcache_evict( i );
nkeynes@1140:                 texcache_free_ptr--;
nkeynes@1140:                 texcache_free_list[texcache_free_ptr] = i;
nkeynes@1140:             }
nkeynes@736:         }
nkeynes@337:     }
nkeynes@337: }
nkeynes@886: /**
nkeynes@886:  * Mark all stride textures as needing a re-read (ie when the stride width
nkeynes@886:  * is changed).
nkeynes@886:  */
nkeynes@886: void texcache_invalidate_stride( )
nkeynes@886: {
nkeynes@886:     int i;
nkeynes@886:     for( i=0; i<MAX_TEXTURES; i++ ) {
nkeynes@886:         if( texcache_active_list[i].texture_addr != -1 &&
nkeynes@1135:                 PVR2_TEX_IS_STRIDE(texcache_active_list[i].tex_mode) ) {
nkeynes@886:             texcache_evict( i );
nkeynes@886:             texcache_free_ptr--;
nkeynes@886:             texcache_free_list[texcache_free_ptr] = i;
nkeynes@886:         }
nkeynes@886:     }
nkeynes@886: }
nkeynes@886: 
nkeynes@1135: void texcache_begin_scene( uint32_t palette_mode, uint32_t stride )
nkeynes@886: {
nkeynes@1140:     gboolean format_changed = FALSE;
nkeynes@1140:     if( palette_mode != texcache_palette_mode ) {
nkeynes@886:         texcache_invalidate_palette();
nkeynes@1140:         format_changed = TRUE;
nkeynes@1140:     }
nkeynes@886:     if( stride != texcache_stride_width )
nkeynes@886:         texcache_invalidate_stride();
nkeynes@886:     
nkeynes@886:     texcache_palette_mode = palette_mode;
nkeynes@886:     texcache_stride_width = stride;
nkeynes@1140: 
nkeynes@1140:     if( !texcache_palette_valid && texcache_have_palette_shader )
nkeynes@1140:         texcache_load_palette_texture(format_changed);
nkeynes@886: }
nkeynes@337: 
nkeynes@311: static void decode_pal8_to_32( uint32_t *out, uint8_t *in, int inbytes, uint32_t *pal )
nkeynes@311: {
nkeynes@311:     int i;
nkeynes@311:     for( i=0; i<inbytes; i++ ) {
nkeynes@736:         *out++ = pal[*in++];
nkeynes@129:     }
nkeynes@129: }
nkeynes@129: 
nkeynes@321: static void decode_pal8_to_16( uint16_t *out, uint8_t *in, int inbytes, uint32_t *pal )
nkeynes@311: {
nkeynes@311:     int i;
nkeynes@311:     for( i=0; i<inbytes; i++ ) {
nkeynes@736:         *out++ = (uint16_t)pal[*in++];
nkeynes@113:     }
nkeynes@113: }
nkeynes@113: 
nkeynes@315: static void decode_pal4_to_32( uint32_t *out, uint8_t *in, int inbytes, uint32_t *pal )
nkeynes@315: {
nkeynes@315:     int i;
nkeynes@315:     for( i=0; i<inbytes; i++ ) {
nkeynes@736:         *out++ = pal[*in & 0x0F];
nkeynes@736:         *out++ = pal[(*in >> 4)];
nkeynes@736:         in++;
nkeynes@315:     }
nkeynes@315: }
nkeynes@315: 
nkeynes@1140: static void decode_pal4_to_pal8( uint8_t *out, uint8_t *in, int inbytes )
nkeynes@1140: {
nkeynes@1140:     int i;
nkeynes@1140:     for( i=0; i<inbytes; i++ ) {
nkeynes@1140:         *out++ = (uint8_t)(*in & 0x0F);
nkeynes@1140:         *out++ = (uint8_t)(*in >> 4);
nkeynes@1140:         in++;
nkeynes@1140:     }
nkeynes@1140: }
nkeynes@1140: 
nkeynes@1140: 
nkeynes@315: 
nkeynes@321: static void decode_pal4_to_16( uint16_t *out, uint8_t *in, int inbytes, uint32_t *pal )
nkeynes@315: {
nkeynes@315:     int i;
nkeynes@315:     for( i=0; i<inbytes; i++ ) {
nkeynes@736:         *out++ = (uint16_t)pal[*in & 0x0F];
nkeynes@736:         *out++ = (uint16_t)pal[(*in >> 4)];
nkeynes@736:         in++;
nkeynes@315:     }
nkeynes@315: }
nkeynes@315: 
nkeynes@224: #define VQ_CODEBOOK_SIZE 2048 /* 256 entries * 4 pixels per quad * 2 byte pixels */
nkeynes@224: 
nkeynes@224: struct vq_codebook {
nkeynes@224:     uint16_t quad[256][4];
nkeynes@224: };
nkeynes@224: 
nkeynes@270: static void vq_get_codebook( struct vq_codebook *codebook, 
nkeynes@736:                              uint16_t *input )
nkeynes@270: {
nkeynes@270:     /* Detwiddle the codebook, for the sake of my own sanity if nothing else */
nkeynes@270:     uint16_t *p = (uint16_t *)input;
nkeynes@270:     int i;
nkeynes@270:     for( i=0; i<256; i++ ) {
nkeynes@736:         codebook->quad[i][0] = *p++;
nkeynes@736:         codebook->quad[i][2] = *p++;
nkeynes@736:         codebook->quad[i][1] = *p++;
nkeynes@736:         codebook->quad[i][3] = *p++;
nkeynes@270:     }
nkeynes@270: }    
nkeynes@270: 
nkeynes@429: static void vq_decode( uint16_t *output, unsigned char *input, int width, int height, 
nkeynes@736:                        struct vq_codebook *codebook ) {
nkeynes@224:     int i,j;
nkeynes@736: 
nkeynes@270:     uint8_t *c = (uint8_t *)input;
nkeynes@311:     for( j=0; j<height; j+=2 ) {
nkeynes@736:         for( i=0; i<width; i+=2 ) {
nkeynes@736:             uint8_t code = *c++;
nkeynes@736:             output[i + j*width] = codebook->quad[code][0];
nkeynes@736:             output[i + 1 + j*width] = codebook->quad[code][1];
nkeynes@736:             output[i + (j+1)*width] = codebook->quad[code][2];
nkeynes@736:             output[i + 1 + (j+1)*width] = codebook->quad[code][3];
nkeynes@736:         }
nkeynes@224:     }
nkeynes@224: }
nkeynes@113: 
nkeynes@282: static inline uint32_t yuv_to_rgb32( float y, float u, float v )
nkeynes@282: {
nkeynes@282:     u -= 128;
nkeynes@282:     v -= 128;
nkeynes@282:     int r = (int)(y + v*1.375);
nkeynes@282:     int g = (int)(y - u*0.34375 - v*0.6875);
nkeynes@282:     int b = (int)(y + u*1.71875);
nkeynes@282:     if( r > 255 ) { r = 255; } else if( r < 0 ) { r = 0; }
nkeynes@282:     if( g > 255 ) { g = 255; } else if( g < 0 ) { g = 0; }
nkeynes@282:     if( b > 255 ) { b = 255; } else if( b < 0 ) { b = 0; }
nkeynes@289:     return 0xFF000000 | (r<<16) | (g<<8) | (b);
nkeynes@282: }
nkeynes@282: 
nkeynes@282: 
nkeynes@282: /**
nkeynes@311:  * Convert raster YUV texture data into RGB32 data - most GL implementations don't
nkeynes@282:  * directly support this format unfortunately. The input data is formatted as
nkeynes@282:  * 32 bits = 2 horizontal pixels, UYVY. This is currently done rather inefficiently
nkeynes@282:  * in floating point.
nkeynes@282:  */
nkeynes@311: static void yuv_decode( uint32_t *output, uint32_t *input, int width, int height )
nkeynes@282: {
nkeynes@282:     int x, y;
nkeynes@282:     uint32_t *p = input;
nkeynes@282:     for( y=0; y<height; y++ ) {
nkeynes@736:         for( x=0; x<width; x+=2 ) {
nkeynes@736:             float u = (float)(*p & 0xFF);
nkeynes@736:             float y0 = (float)( (*p>>8)&0xFF );
nkeynes@736:             float v = (float)( (*p>>16)&0xFF );
nkeynes@736:             float y1 = (float)( (*p>>24)&0xFF );
nkeynes@736:             *output++ = yuv_to_rgb32( y0, u, v ); 
nkeynes@736:             *output++ = yuv_to_rgb32( y1, u, v );
nkeynes@736:             p++;
nkeynes@736:         }
nkeynes@282:     }
nkeynes@282: }
nkeynes@282: 
nkeynes@856: static gboolean is_npot_texture( int width )
nkeynes@856: {
nkeynes@856:     while( width != 0 ) {
nkeynes@856:         if( width & 1 ) 
nkeynes@856:             return width != 1;
nkeynes@856:         width >>= 1;
nkeynes@856:     }
nkeynes@856:     return TRUE;
nkeynes@856: }
nkeynes@856: 
nkeynes@103: /**
nkeynes@103:  * Load texture data from the given address and parameters into the currently
nkeynes@103:  * bound OpenGL texture.
nkeynes@103:  */
nkeynes@429: static void texcache_load_texture( uint32_t texture_addr, int width, int height,
nkeynes@736:                                    int mode ) {
nkeynes@284:     int bpp_shift = 1; /* bytes per (output) pixel as a power of 2 */
nkeynes@349:     GLint intFormat = GL_RGBA, format, type;
nkeynes@108:     int tex_format = mode & PVR2_TEX_FORMAT_MASK;
nkeynes@270:     struct vq_codebook codebook;
nkeynes@1140:     GLint min_filter = GL_LINEAR;
nkeynes@1140:     GLint max_filter = GL_LINEAR;
nkeynes@1140:     GLint mipmapfilter = GL_LINEAR_MIPMAP_LINEAR;
nkeynes@108: 
nkeynes@270:     /* Decode the format parameters */
nkeynes@270:     switch( tex_format ) {
nkeynes@270:     case PVR2_TEX_FORMAT_IDX4:
nkeynes@270:     case PVR2_TEX_FORMAT_IDX8:
nkeynes@1140:         if( texcache_have_palette_shader ) {
nkeynes@1221:             intFormat = GL_ALPHA;
nkeynes@1140:             format = GL_ALPHA;
nkeynes@736:             type = GL_UNSIGNED_BYTE;
nkeynes@1140:             bpp_shift = 0;
nkeynes@1140:             min_filter = max_filter = GL_NEAREST;
nkeynes@1140:             mipmapfilter = GL_NEAREST_MIPMAP_NEAREST;
nkeynes@1140:         } else {
nkeynes@1140:             /* For indexed-colour modes, we need to lookup the palette control
nkeynes@1140:              * word to determine the de-indexed texture format.
nkeynes@1140:              */
nkeynes@1140:             switch( texcache_palette_mode ) {
nkeynes@1140:             case 0: /* ARGB1555 */
nkeynes@1140:                 format = GL_BGRA;
nkeynes@1140:                 type = GL_UNSIGNED_SHORT_1_5_5_5_REV;
nkeynes@1140:                 break;
nkeynes@1140:             case 1:  /* RGB565 */
nkeynes@1140:                 intFormat = GL_RGB;
nkeynes@1140:                 format = GL_RGB;
nkeynes@1140:                 type = GL_UNSIGNED_SHORT_5_6_5;
nkeynes@1140:                 break;
nkeynes@1140:             case 2: /* ARGB4444 */
nkeynes@1140:                 format = GL_BGRA;
nkeynes@1140:                 type = GL_UNSIGNED_SHORT_4_4_4_4_REV;
nkeynes@1140:                 break;
nkeynes@1140:             case 3: /* ARGB8888 */
nkeynes@1140:                 format = GL_BGRA;
nkeynes@1140:                 type = GL_UNSIGNED_BYTE;
nkeynes@1140:                 bpp_shift = 2;
nkeynes@1140:                 break;
nkeynes@1140:             default:
nkeynes@1140:                 return; /* Can't happen, but it makes gcc stop complaining */
nkeynes@1140:             }
nkeynes@736:         }
nkeynes@736:         break;
nkeynes@736: 
nkeynes@860:         default:
nkeynes@736:         case PVR2_TEX_FORMAT_ARGB1555:
nkeynes@736:             format = GL_BGRA;
nkeynes@736:             type = GL_UNSIGNED_SHORT_1_5_5_5_REV;
nkeynes@736:             break;
nkeynes@736:         case PVR2_TEX_FORMAT_RGB565:
nkeynes@736:             intFormat = GL_RGB;
nkeynes@736:             format = GL_RGB;
nkeynes@736:             type = GL_UNSIGNED_SHORT_5_6_5;
nkeynes@736:             break;
nkeynes@736:         case PVR2_TEX_FORMAT_ARGB4444:
nkeynes@736:             format = GL_BGRA;
nkeynes@736:             type = GL_UNSIGNED_SHORT_4_4_4_4_REV;
nkeynes@736:             break;
nkeynes@736:         case PVR2_TEX_FORMAT_YUV422:
nkeynes@736:             /* YUV422 isn't directly supported by most implementations, so decode
nkeynes@736:              * it to a (reasonably) standard ARGB32.
nkeynes@736:              */
nkeynes@736:             bpp_shift = 2;
nkeynes@736:             format = GL_BGRA;
nkeynes@736:             type = GL_UNSIGNED_BYTE;
nkeynes@736:             break;
nkeynes@736:         case PVR2_TEX_FORMAT_BUMPMAP:
nkeynes@860:             WARN( "Bumpmap not supported" );
nkeynes@736:             return;
nkeynes@270:     }
nkeynes@736: 
nkeynes@321:     if( PVR2_TEX_IS_STRIDE(mode) && tex_format != PVR2_TEX_FORMAT_IDX4 &&
nkeynes@736:             tex_format != PVR2_TEX_FORMAT_IDX8 ) {
nkeynes@736:         /* Stride textures cannot be mip-mapped, compressed, indexed or twiddled */
nkeynes@736:         unsigned char data[(width*height) << bpp_shift];
nkeynes@736:         if( tex_format == PVR2_TEX_FORMAT_YUV422 ) {
nkeynes@736:             unsigned char tmp[(width*height)<<1];
nkeynes@886:             pvr2_vram64_read_stride( tmp, width<<1, texture_addr, texcache_stride_width<<1, height );
nkeynes@736:             yuv_decode( (uint32_t *)data, (uint32_t *)tmp, width, height );
nkeynes@736:         } else {
nkeynes@886:             pvr2_vram64_read_stride( data, width<<bpp_shift, texture_addr, texcache_stride_width<<bpp_shift, height );
nkeynes@736:         }
nkeynes@736:         glTexImage2D( GL_TEXTURE_2D, 0, intFormat, width, height, 0, format, type, data );
nkeynes@1140:         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, min_filter);
nkeynes@1140:         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, max_filter);
nkeynes@736:         return;
nkeynes@284:     } 
nkeynes@284: 
nkeynes@270:     if( PVR2_TEX_IS_COMPRESSED(mode) ) {
nkeynes@736:         uint16_t tmp[VQ_CODEBOOK_SIZE];
nkeynes@736:         pvr2_vram64_read( (unsigned char *)tmp, texture_addr, VQ_CODEBOOK_SIZE );
nkeynes@736:         texture_addr += VQ_CODEBOOK_SIZE;
nkeynes@736:         vq_get_codebook( &codebook, tmp );
nkeynes@270:     }
nkeynes@270: 
nkeynes@349:     int level=0, last_level = 0, mip_width = width, mip_height = height, src_bytes, dest_bytes;
nkeynes@270:     if( PVR2_TEX_IS_MIPMAPPED(mode) ) {
nkeynes@736:         uint32_t src_offset = 0;
nkeynes@1140:         min_filter = mipmapfilter;
nkeynes@736:         mip_height = height = width;
nkeynes@736:         while( (1<<last_level) < width ) {
nkeynes@736:             last_level++;
nkeynes@736:             src_offset += ((width>>last_level)*(width>>last_level));
nkeynes@736:         }
nkeynes@736:         if( width != 1 ) {
nkeynes@736:             src_offset += 3;
nkeynes@736:         }
nkeynes@736:         if( PVR2_TEX_IS_COMPRESSED(mode) ) {
nkeynes@736:             src_offset >>= 2;
nkeynes@736:         } else if( tex_format == PVR2_TEX_FORMAT_IDX4 ) {
nkeynes@736:             src_offset >>= 1;
nkeynes@736:         } else if( tex_format == PVR2_TEX_FORMAT_YUV422 ) {
nkeynes@736:             src_offset <<= 1;
nkeynes@736:         } else if( tex_format != PVR2_TEX_FORMAT_IDX8 ) {
nkeynes@736:             src_offset <<= bpp_shift;
nkeynes@736:         }
nkeynes@736:         texture_addr += src_offset;
nkeynes@270:     }
nkeynes@736: 
nkeynes@654: 
nkeynes@349:     dest_bytes = (mip_width * mip_height) << bpp_shift;
nkeynes@349:     src_bytes = dest_bytes; // Modes will change this (below)
nkeynes@108: 
nkeynes@654:     for( level=0; level<= last_level; level++ ) {
nkeynes@736:         unsigned char data[dest_bytes];
nkeynes@736:         /* load data from image, detwiddling/uncompressing as required */
nkeynes@736:         if( tex_format == PVR2_TEX_FORMAT_IDX8 ) {
nkeynes@1140:             if( texcache_have_palette_shader ) {
nkeynes@1140:                 pvr2_vram64_read_twiddled_8( data, texture_addr, mip_width, mip_height );
nkeynes@736:             } else {
nkeynes@1140:                 src_bytes = (mip_width * mip_height);
nkeynes@1140:                 int bank = (mode >> 25) &0x03;
nkeynes@1140:                 uint32_t *palette = ((uint32_t *)mmio_region_PVR2PAL.mem) + (bank<<8);
nkeynes@1140:                 unsigned char tmp[src_bytes];
nkeynes@1140:                 pvr2_vram64_read_twiddled_8( tmp, texture_addr, mip_width, mip_height );
nkeynes@1140:                 if( bpp_shift == 2 ) {
nkeynes@1140:                     decode_pal8_to_32( (uint32_t *)data, tmp, src_bytes, palette );
nkeynes@1140:                 } else {
nkeynes@1140:                     decode_pal8_to_16( (uint16_t *)data, tmp, src_bytes, palette );
nkeynes@1140:                 }
nkeynes@736:             }
nkeynes@736:         } else if( tex_format == PVR2_TEX_FORMAT_IDX4 ) {
nkeynes@736:             src_bytes = (mip_width * mip_height) >> 1;
nkeynes@736:             unsigned char tmp[src_bytes];
nkeynes@1140:             if( texcache_have_palette_shader ) {
nkeynes@1140:                 pvr2_vram64_read_twiddled_4( tmp, texture_addr, mip_width, mip_height );
nkeynes@1140:                 decode_pal4_to_pal8( data, tmp, src_bytes );
nkeynes@736:             } else {
nkeynes@1140:                 int bank = (mode >>21 ) & 0x3F;
nkeynes@1140:                 uint32_t *palette = ((uint32_t *)mmio_region_PVR2PAL.mem) + (bank<<4);
nkeynes@1140:                 pvr2_vram64_read_twiddled_4( tmp, texture_addr, mip_width, mip_height );
nkeynes@1140:                 if( bpp_shift == 2 ) {
nkeynes@1140:                     decode_pal4_to_32( (uint32_t *)data, tmp, src_bytes, palette );
nkeynes@1140:                 } else {
nkeynes@1140:                     decode_pal4_to_16( (uint16_t *)data, tmp, src_bytes, palette );
nkeynes@1140:                 }
nkeynes@736:             }
nkeynes@736:         } else if( tex_format == PVR2_TEX_FORMAT_YUV422 ) {
nkeynes@736:             src_bytes = ((mip_width*mip_height)<<1);
nkeynes@736:             unsigned char tmp[src_bytes];
nkeynes@736:             if( PVR2_TEX_IS_TWIDDLED(mode) ) {
nkeynes@736:                 pvr2_vram64_read_twiddled_16( tmp, texture_addr, mip_width, mip_height );
nkeynes@736:             } else {
nkeynes@736:                 pvr2_vram64_read( tmp, texture_addr, src_bytes );
nkeynes@736:             }
nkeynes@736:             yuv_decode( (uint32_t *)data, (uint32_t *)tmp, mip_width, mip_height );
nkeynes@736:         } else if( PVR2_TEX_IS_COMPRESSED(mode) ) {
nkeynes@736:             src_bytes = ((mip_width*mip_height) >> 2);
nkeynes@736:             unsigned char tmp[src_bytes];
nkeynes@736:             if( PVR2_TEX_IS_TWIDDLED(mode) ) {
nkeynes@736:                 pvr2_vram64_read_twiddled_8( tmp, texture_addr, mip_width>>1, mip_height>>1 );
nkeynes@736:             } else {
nkeynes@736:                 pvr2_vram64_read( tmp, texture_addr, src_bytes );
nkeynes@736:             }
nkeynes@736:             vq_decode( (uint16_t *)data, tmp, mip_width, mip_height, &codebook );
nkeynes@736:         } else if( PVR2_TEX_IS_TWIDDLED(mode) ) {
nkeynes@736:             pvr2_vram64_read_twiddled_16( data, texture_addr, mip_width, mip_height );
nkeynes@736:         } else {
nkeynes@736:             pvr2_vram64_read( data, texture_addr, src_bytes );
nkeynes@736:         }
nkeynes@270: 
nkeynes@736:         /* Pass to GL */
nkeynes@736:         if( level == last_level && level != 0 ) { /* 1x1 stored within a 2x2 */
nkeynes@736:             glTexImage2D( GL_TEXTURE_2D, level, intFormat, 1, 1, 0, format, type,
nkeynes@736:                     data + (3 << bpp_shift) );
nkeynes@736:         } else {
nkeynes@736:             glTexImage2D( GL_TEXTURE_2D, level, intFormat, mip_width, mip_height, 0, format, type,
nkeynes@736:                     data );
nkeynes@736:             if( mip_width > 2 ) {
nkeynes@736:                 mip_width >>= 1;
nkeynes@736:                 mip_height >>= 1;
nkeynes@736:                 dest_bytes >>= 2;
nkeynes@736:                 src_bytes >>= 2;
nkeynes@736:             }
nkeynes@736:             texture_addr -= src_bytes;
nkeynes@736:         }
nkeynes@103:     }
nkeynes@270: 
nkeynes@1140:     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, min_filter);
nkeynes@1140:     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, max_filter);
nkeynes@103: }
nkeynes@103: 
nkeynes@1135: static int texcache_find_texture_slot( uint32_t poly2_masked_word, uint32_t texture_word )
nkeynes@103: {
nkeynes@653:     uint32_t texture_addr = (texture_word & 0x000FFFFF)<<3;
nkeynes@103:     uint32_t texture_page = texture_addr >> 12;
nkeynes@462:     texcache_entry_index next;
nkeynes@103:     texcache_entry_index idx = texcache_page_lookup[texture_page];
nkeynes@103:     while( idx != EMPTY_ENTRY ) {
nkeynes@736:         texcache_entry_t entry = &texcache_active_list[idx];
nkeynes@1135:         if( entry->tex_mode == texture_word &&
nkeynes@1135:                 entry->poly2_mode == poly2_masked_word ) {
nkeynes@736:             entry->lru_count = texcache_ref_counter++;
nkeynes@856:             return idx;
nkeynes@736:         }
nkeynes@103:         idx = entry->next;
nkeynes@103:     }
nkeynes@856:     return -1;
nkeynes@856: }
nkeynes@103: 
nkeynes@1135: static int texcache_alloc_texture_slot( uint32_t poly2_word, uint32_t texture_word )
nkeynes@856: {
nkeynes@856:     uint32_t texture_addr = (texture_word & 0x000FFFFF)<<3;
nkeynes@856:     uint32_t texture_page = texture_addr >> 12;
nkeynes@462:     texcache_entry_index slot = 0;
nkeynes@103: 
nkeynes@103:     if( texcache_free_ptr < MAX_TEXTURES ) {
nkeynes@736:         slot = texcache_free_list[texcache_free_ptr++];
nkeynes@103:     } else {
nkeynes@736:         slot = texcache_evict_lru();
nkeynes@103:     }
nkeynes@103: 
nkeynes@103:     /* Construct new entry */
nkeynes@886:     assert( texcache_active_list[slot].texture_addr == -1 );
nkeynes@103:     texcache_active_list[slot].texture_addr = texture_addr;
nkeynes@1135:     texcache_active_list[slot].tex_mode = texture_word;
nkeynes@1135:     texcache_active_list[slot].poly2_mode = poly2_word;
nkeynes@103:     texcache_active_list[slot].lru_count = texcache_ref_counter++;
nkeynes@103: 
nkeynes@103:     /* Add entry to the lookup table */
nkeynes@856:     int next = texcache_page_lookup[texture_page];
nkeynes@462:     if( next == slot ) {
nkeynes@736:         int i;
nkeynes@736:         fprintf( stderr, "Active list: " );
nkeynes@736:         for( i=0; i<MAX_TEXTURES; i++ ) {
nkeynes@736:             fprintf( stderr, "%d, ", texcache_active_list[i].next );
nkeynes@736:         }
nkeynes@736:         fprintf( stderr, "\n" );
nkeynes@736:         assert( next != slot );
nkeynes@736: 
nkeynes@462:     }
nkeynes@462:     texcache_active_list[slot].next = next;
nkeynes@103:     texcache_page_lookup[texture_page] = slot;
nkeynes@856:     return slot;
nkeynes@856: }
nkeynes@103: 
nkeynes@103: /**
nkeynes@103:  * Return a texture ID for the texture specified at the supplied address
nkeynes@103:  * and given parameters (the same sequence of bytes could in theory have
nkeynes@103:  * multiple interpretations). We use the texture address as the primary
nkeynes@1135:  * index, but allow for multiple instances at each address.
nkeynes@103:  * 
nkeynes@103:  * If the texture has already been bound, return the ID to which it was
nkeynes@103:  * bound. Otherwise obtain an unused texture ID and set it up appropriately.
nkeynes@1135:  * The current GL_TEXTURE_2D binding will be changed in this case.
nkeynes@103:  */
nkeynes@1135: GLuint texcache_get_texture( uint32_t poly2_word, uint32_t texture_word )
nkeynes@103: {
nkeynes@1135:     poly2_word &= 0x000F803F; /* Get just the texture-relevant bits */
nkeynes@1140:     uint32_t texture_lookup = texture_word;
nkeynes@1140:     if( PVR2_TEX_IS_PALETTE(texture_lookup) ) {
nkeynes@1140:         texture_lookup &= 0xF81FFFFF; /* Mask out the bank bits */
nkeynes@1140:     }
nkeynes@1140:     int slot = texcache_find_texture_slot( poly2_word, texture_lookup );
nkeynes@856: 
nkeynes@856:     if( slot == -1 ) {
nkeynes@856:         /* Not found - check the free list */
nkeynes@1140:         slot = texcache_alloc_texture_slot( poly2_word, texture_lookup );
nkeynes@856:         
nkeynes@856:         /* Construct the GL texture */
nkeynes@856:         uint32_t texture_addr = (texture_word & 0x000FFFFF)<<3;
nkeynes@1135:         unsigned width = POLY2_TEX_WIDTH(poly2_word);
nkeynes@1135:         unsigned height = POLY2_TEX_HEIGHT(poly2_word);
nkeynes@1135: 
nkeynes@856:         glBindTexture( GL_TEXTURE_2D, texcache_active_list[slot].texture_id );
nkeynes@856:         texcache_load_texture( texture_addr, width, height, texture_word );
nkeynes@1135: 
nkeynes@1135:         /* Set texture parameters from the poly2 word */
nkeynes@1135:         if( POLY2_TEX_CLAMP_U(poly2_word) ) {
nkeynes@1210:             glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE );
nkeynes@1135:         } else if( POLY2_TEX_MIRROR_U(poly2_word) ) {
nkeynes@1210:             glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_MIRRORED_REPEAT );
nkeynes@1135:         } else {
nkeynes@1135:             glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT );
nkeynes@1135:         }
nkeynes@1135:         if( POLY2_TEX_CLAMP_V(poly2_word) ) {
nkeynes@1210:             glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );
nkeynes@1135:         } else if( POLY2_TEX_MIRROR_V(poly2_word) ) {
nkeynes@1210:             glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_MIRRORED_REPEAT );
nkeynes@1135:         } else {
nkeynes@1135:             glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT );
nkeynes@1135:         }
nkeynes@103:     }
nkeynes@103: 
nkeynes@103:     return texcache_active_list[slot].texture_id;
nkeynes@103: }
nkeynes@653: 
nkeynes@1135: #if 0
nkeynes@856: render_buffer_t texcache_get_render_buffer( uint32_t texture_addr, int mode, int width, int height )
nkeynes@856: {
nkeynes@856:     uint32_t texture_word = ((texture_addr >> 3) & 0x000FFFFF) | PVR2_TEX_UNTWIDDLED;
nkeynes@856:     switch( mode ) {
nkeynes@856:     case COLFMT_BGRA1555: texture_word |= PVR2_TEX_FORMAT_ARGB1555; break;
nkeynes@856:     case COLFMT_RGB565:   texture_word |= PVR2_TEX_FORMAT_RGB565; break;
nkeynes@856:     case COLFMT_BGRA4444: texture_word |= PVR2_TEX_FORMAT_ARGB4444; break;
nkeynes@856:     default:
nkeynes@856:         WARN( "Rendering to non-texture colour format" );
nkeynes@856:     }
nkeynes@856:     if( is_npot_texture(width) )
nkeynes@856:         texture_word |= PVR2_TEX_STRIDE;
nkeynes@635:     
nkeynes@856:     
nkeynes@856:     int slot = texcache_find_texture_slot( texture_word, width, height );
nkeynes@856:     if( slot == -1 ) {
nkeynes@856:         slot = texcache_alloc_texture_slot( texture_word, width, height );
nkeynes@856:     }
nkeynes@856:     
nkeynes@856:     texcache_entry_t entry = &texcache_active_list[slot];
nkeynes@103: 
nkeynes@870:     if( entry->buffer == NULL ) {
nkeynes@856:         entry->buffer = pvr2_create_render_buffer( texture_addr, width, height, entry->texture_id );
nkeynes@870:     } else if( entry->buffer->width != width || entry->buffer->height != height ) {        
nkeynes@870:         texcache_release_render_buffer(entry->buffer);
nkeynes@870:         entry->buffer = pvr2_create_render_buffer( texture_addr, width, height, entry->texture_id );
nkeynes@103:     }
nkeynes@103: 
nkeynes@856:     return entry->buffer;
nkeynes@103: }
nkeynes@1135: #endif
nkeynes@635: 
nkeynes@635: /**
nkeynes@635:  * Check the integrity of the texcache. Verifies that every cache slot
nkeynes@635:  * appears exactly once on either the free list or one page list. For 
nkeynes@635:  * active slots, the texture address must also match the page it appears on.
nkeynes@635:  * 
nkeynes@635:  */
nkeynes@635: void texcache_integrity_check()
nkeynes@635: {
nkeynes@635:     int i;
nkeynes@635:     int slot_found[MAX_TEXTURES];
nkeynes@736: 
nkeynes@635:     memset( slot_found, 0, sizeof(slot_found) );
nkeynes@635: 
nkeynes@635:     /* Check entries on the free list */
nkeynes@635:     for( i= texcache_free_ptr; i< MAX_TEXTURES; i++ ) {
nkeynes@736:         int slot = texcache_free_list[i];
nkeynes@736:         assert( slot_found[slot] == 0 );
nkeynes@736:         assert( texcache_active_list[slot].next == EMPTY_ENTRY );
nkeynes@736:         slot_found[slot] = 1;
nkeynes@635:     }
nkeynes@635: 
nkeynes@635:     /* Check entries on the active lists */
nkeynes@635:     for( i=0; i< PVR2_RAM_PAGES; i++ ) {
nkeynes@736:         int slot = texcache_page_lookup[i];
nkeynes@736:         while( slot != EMPTY_ENTRY ) {
nkeynes@736:             assert( slot_found[slot] == 0 );
nkeynes@736:             assert( (texcache_active_list[slot].texture_addr >> 12) == i );
nkeynes@736:             slot_found[slot] = 2;
nkeynes@736:             slot = texcache_active_list[slot].next;
nkeynes@736:         }
nkeynes@635:     }
nkeynes@635: 
nkeynes@635:     /* Make sure we didn't miss any entries */
nkeynes@635:     for( i=0; i<MAX_TEXTURES; i++ ) {
nkeynes@736:         assert( slot_found[i] != 0 );
nkeynes@635:     }
nkeynes@635: }
nkeynes@1140: 
nkeynes@1140: /**
nkeynes@1140:  * Dump the contents of the texture cache
nkeynes@1140:  */
nkeynes@1140: void texcache_dump()
nkeynes@1140: {
nkeynes@1140:     unsigned i;
nkeynes@1165:     GLboolean boolresult;
nkeynes@1140:     for( i=0; i< PVR2_RAM_PAGES; i++ ) {
nkeynes@1140:         int slot = texcache_page_lookup[i];
nkeynes@1140:         while( slot != EMPTY_ENTRY ) {
nkeynes@1165:             fprintf( stderr, "%-3d: %08X %dx%d (%08X %08X) %s\n", slot,
nkeynes@1140:                     texcache_active_list[slot].texture_addr,
nkeynes@1140:                     POLY2_TEX_WIDTH(texcache_active_list[slot].poly2_mode),
nkeynes@1140:                     POLY2_TEX_HEIGHT(texcache_active_list[slot].poly2_mode),
nkeynes@1140:                     texcache_active_list[slot].poly2_mode,
nkeynes@1165:                     texcache_active_list[slot].tex_mode,
nkeynes@1221: #ifdef HAVE_OPENGL_TEX_RESIDENT
nkeynes@1221:                     (glAreTexturesResident(1, &texcache_active_list[slot].texture_id, &boolresult) ? "[RESIDENT]" : "[NOT RESIDENT]")
nkeynes@1221: #else
nkeynes@1221:                     ""
nkeynes@1221: #endif
nkeynes@1221:                     );
nkeynes@1140:             slot = texcache_active_list[slot].next;
nkeynes@1140:         }
nkeynes@1140:     }
nkeynes@1140: }
nkeynes@1142: 
nkeynes@1142: void texcache_print_idx4( uint32_t texture_addr, int width )
nkeynes@1142: {
nkeynes@1142:     unsigned x,y;
nkeynes@1142:     int src_bytes = (width*width>>1);
nkeynes@1142:     char tmp[src_bytes];
nkeynes@1142:     char data[width*width];
nkeynes@1142:     pvr2_vram64_read_twiddled_4( tmp, texture_addr, width, width );
nkeynes@1142:     decode_pal4_to_pal8( data, tmp, src_bytes );
nkeynes@1142:     for( y=0; y<width; y++ ) {
nkeynes@1142:         for( x=0; x<width; x++ ) {
nkeynes@1142:             printf( "%1x", data[y*width+x] );
nkeynes@1142:         }
nkeynes@1142:         printf( "\n" );
nkeynes@1142:     }
nkeynes@1142: }