4 & 8 bit texture issue - Githubissues

conker64 / libdragon

N64 Libdragon with extended features

The Unlicense

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4 & 8 bit texture issue #1

Open conker64 opened 7 years ago

conker64 commented 7 years ago

When the texture is 2KB size (64x64x4bit) or (64x32x8bit) won't be displayed or properly loaded.

Functions involved (rdp.c):

rdp_load_tlut(uint8_t _pal_bp, uint8_t _pal_num, uint16_t *_palette)
__rdp_load_texpal(sprite_t *sprite, int sh, int th )
rdp_draw_textured_rectangle_scaled( int tx, int ty, int bx, int by, double x_scale, double y_scale, int flags )

It could be the way the data is loaded to the RDP (rdp.c):

__rdp_ringbuffer_send( void )
__rdp_ringbuffer_queue( uint32_t data )

Needs research to find the issue.

conker64 commented 6 years ago

Work around, 64x64x4bit can be used now, however they bug palettes 0 and 1.

While the problem is fixed, could be safe to set:

rdp_select_palette( 2 );
rdp_load_palette( 2 , 15, palette ); // TMEM second palette, 16 colors upload (0-15), palette struct