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lxdream.org :: lxdream/src/pvr2/pvr2.h
lxdream 0.9.1
released Jun 29
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filename src/pvr2/pvr2.h
changeset 1233:06923d1020de
prev1219:3966d3e55351
next1256:a9d29fe74bf3
author nkeynes
date Thu Feb 23 22:40:50 2012 +1000 (7 years ago)
permissions -rw-r--r--
last change Fix non-shader rendering
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     1 /**
     2  * $Id$
     3  *
     4  * PVR2 (video chip) functions and macros.
     5  *
     6  * Copyright (c) 2005 Nathan Keynes.
     7  *
     8  * This program is free software; you can redistribute it and/or modify
     9  * it under the terms of the GNU General Public License as published by
    10  * the Free Software Foundation; either version 2 of the License, or
    11  * (at your option) any later version.
    12  *
    13  * This program is distributed in the hope that it will be useful,
    14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    16  * GNU General Public License for more details.
    17  */
    19 #ifndef lxdream_pvr2_H
    20 #define lxdream_pvr2_H 1
    22 #include <stdio.h>
    23 #include "lxdream.h"
    24 #include "display.h"
    26 #ifdef __cplusplus
    27 extern "C" {
    28 #endif
    30 typedef unsigned int pvraddr_t;
    31 typedef unsigned int pvr64addr_t;
    33 #define DISPMODE_ENABLE      0x00000001 /* Display enable */
    34 #define DISPMODE_LINEDOUBLE  0x00000002 /* scanline double */
    35 #define DISPMODE_COLFMT      0x0000000C /* Colour mode */
    36 #define DISPMODE_CLOCKDIV    0x08000000 /* Clock divide-by-2 */
    38 #define DISPSIZE_MODULO 0x3FF00000 /* line skip +1 (32-bit words)*/
    39 #define DISPSIZE_LPF    0x000FFC00 /* lines per field */
    40 #define DISPSIZE_PPL    0x000003FF /* pixel words (32 bit) per line */
    42 #define DISPCFG_VP 0x00000001 /* V-sync polarity */
    43 #define DISPCFG_HP 0x00000002 /* H-sync polarity */
    44 #define DISPCFG_I  0x00000010 /* Interlace enable */
    45 #define DISPCFG_BS 0x000000C0 /* Broadcast standard */
    46 #define DISPCFG_VO 0x00000100 /* Video output enable */
    48 #define DISPSYNC_LINE_MASK  0x000003FF
    49 #define DISPSYNC_EVEN_FIELD 0x00000000
    50 #define DISPSYNC_ODD_FIELD  0x00000400
    51 #define DISPSYNC_ACTIVE     0x00000800
    52 #define DISPSYNC_HSYNC      0x00001000
    53 #define DISPSYNC_VSYNC      0x00002000
    55 #define BS_NTSC 0x00000000
    56 #define BS_PAL  0x00000040
    57 #define BS_PALM 0x00000080 /* ? */
    58 #define BS_PALN 0x000000C0 /* ? */
    60 #define SCALER_HSCALE 0x00010000
    62 #define PVR2_RAM_BASE 0x05000000
    63 #define PVR2_RAM_BASE_INT 0x04000000
    64 #define PVR2_RAM_SIZE (8 * 1024 * 1024)
    65 #define PVR2_RAM_PAGES (PVR2_RAM_SIZE>>12)
    66 #define PVR2_RAM_MASK 0x7FFFFF
    68 #define RENDER_ZONLY  0
    69 #define RENDER_NORMAL 1     /* Render non-modified polygons */
    70 #define RENDER_CHEAPMOD 2   /* Render cheap-modified polygons */
    71 #define RENDER_FULLMOD 3    /* Render the fully-modified version of the polygons */
    73 /**
    74  * Advance to the next frame
    75  */
    76 void pvr2_next_frame( void );
    78 /**
    79  * Draw the current frame on the output window.
    80  */
    81 void pvr2_draw_frame();
    82 void pvr2_set_base_address( uint32_t );
    83 int pvr2_get_frame_count( void );
    84 gboolean pvr2_save_next_scene( const gchar *filename );
    86 #define PVR2_CMD_END_OF_LIST 0x00
    87 #define PVR2_CMD_USER_CLIP   0x20
    88 #define PVR2_CMD_POLY_OPAQUE 0x80
    89 #define PVR2_CMD_MOD_OPAQUE  0x81
    90 #define PVR2_CMD_POLY_TRANS  0x82
    91 #define PVR2_CMD_MOD_TRANS   0x83
    92 #define PVR2_CMD_POLY_PUNCHOUT 0x84
    93 #define PVR2_CMD_VERTEX      0xE0
    94 #define PVR2_CMD_VERTEX_LAST 0xF0
    96 #define PVR2_VOLUME_NORMAL 0x00000000
    97 #define PVR2_VOLUME_REGION1 0x20000000
    98 #define PVR2_VOLUME_REGION0 0x40000000
   100 #define PVR2_POLY_TEXTURED 0x00000008
   101 #define PVR2_POLY_SPECULAR 0x00000004
   102 #define PVR2_POLY_SHADED   0x00000002
   103 #define PVR2_POLY_UV_16BIT 0x00000001
   105 #define PVR2_POLY_MODE_CLAMP_RGB 0x00200000
   106 #define PVR2_POLY_MODE_ALPHA    0x00100000
   107 #define PVR2_POLY_MODE_TEXALPHA 0x00080000
   108 #define PVR2_POLY_MODE_FLIP_S   0x00040000
   109 #define PVR2_POLY_MODE_FLIP_T   0x00020000
   110 #define PVR2_POLY_MODE_CLAMP_S  0x00010000
   111 #define PVR2_POLY_MODE_CLAMP_T  0x00008000
   113 #define PVR2_POLY_FOG_LOOKUP    0x00000000
   114 #define PVR2_POLY_FOG_VERTEX    0x00400000
   115 #define PVR2_POLY_FOG_DISABLED  0x00800000
   116 #define PVR2_POLY_FOG_LOOKUP2   0x00C00000
   119 #define PVR2_TEX_FORMAT_ARGB1555 0x00000000
   120 #define PVR2_TEX_FORMAT_RGB565   0x08000000
   121 #define PVR2_TEX_FORMAT_ARGB4444 0x10000000
   122 #define PVR2_TEX_FORMAT_YUV422   0x18000000
   123 #define PVR2_TEX_FORMAT_BUMPMAP  0x20000000
   124 #define PVR2_TEX_FORMAT_IDX4     0x28000000
   125 #define PVR2_TEX_FORMAT_IDX8     0x30000000
   127 #define PVR2_TEX_MIPMAP      0x80000000
   128 #define PVR2_TEX_COMPRESSED  0x40000000
   129 #define PVR2_TEX_FORMAT_MASK 0x38000000
   130 #define PVR2_TEX_UNTWIDDLED  0x04000000
   131 #define PVR2_TEX_STRIDE      0x02000000
   132 #define PVR2_TEX_IS_PALETTE(mode) ( (mode & PVR2_TEX_FORMAT_MASK) == PVR2_TEX_FORMAT_IDX4 || (mode&PVR2_TEX_FORMAT_MASK) == PVR2_TEX_FORMAT_IDX8 )
   135 #define PVR2_TEX_ADDR(x) ( ((x)&0x01FFFFF)<<3 );
   136 #define PVR2_TEX_IS_MIPMAPPED(x) ( ((x) & 0x84000000) == 0x80000000 )
   137 #define PVR2_TEX_IS_COMPRESSED(x) ( (x) & PVR2_TEX_COMPRESSED )
   138 #define PVR2_TEX_IS_TWIDDLED(x) (((x) & PVR2_TEX_UNTWIDDLED) == 0)
   139 #define PVR2_TEX_IS_STRIDE(x) (((x) & 0x06000000) == 0x06000000)
   141 /****************************** Frame Buffer *****************************/
   143 extern unsigned char pvr2_main_ram[];
   145 /**
   146  * Write a block of data to an address in the DMA range (0x10000000 -
   147  * 0x13FFFFFF), ie TA, YUV, or texture ram.
   148  */
   149 void pvr2_dma_write( sh4addr_t dest, unsigned char *src, uint32_t length );
   151 /**
   152  * Write to the interleaved memory address space (aka 64-bit address space).
   153  */
   154 void pvr2_vram64_write( sh4addr_t dest, unsigned char *src, uint32_t length );
   156 /**
   157  * Write to the interleaved memory address space (aka 64-bit address space),
   158  * using a line length and stride.
   159  */
   160 void pvr2_vram64_write_stride( sh4addr_t dest, unsigned char *src, uint32_t line_bytes,
   161                                uint32_t line_stride_bytes, uint32_t line_count );
   163 /**
   164  * Read from the interleaved memory address space (aka 64-bit address space)
   165  */
   166 void pvr2_vram64_read( unsigned char *dest, sh4addr_t src, uint32_t length );
   168 /**
   169  * Read a twiddled image from interleaved memory address space (aka 64-bit address
   170  * space), writing the image to the destination buffer in detwiddled format.
   171  * Width and height must be powers of 2
   172  * This version reads 4-bit pixels.
   173  */
   174 void pvr2_vram64_read_twiddled_4( unsigned char *dest, sh4addr_t src, uint32_t width, uint32_t height );
   177 /**
   178  * Read a twiddled image from interleaved memory address space (aka 64-bit address
   179  * space), writing the image to the destination buffer in detwiddled format.
   180  * Width and height must be powers of 2
   181  * This version reads 8-bit pixels.
   182  */
   183 void pvr2_vram64_read_twiddled_8( unsigned char *dest, sh4addr_t src, uint32_t width, uint32_t height );
   185 /**
   186  * Read a twiddled image from interleaved memory address space (aka 64-bit address
   187  * space), writing the image to the destination buffer in detwiddled format.
   188  * Width and height must be powers of 2, and src must be 16-bit aligned.
   189  * This version reads 16-bit pixels.
   190  */
   191 void pvr2_vram64_read_twiddled_16( unsigned char *dest, sh4addr_t src, uint32_t width, uint32_t height );
   193 /**
   194  * Read an image from the interleaved memory address space (aka 64-bit address space)
   195  * where the source and destination line sizes may differ. Note that both byte
   196  * counts must be a multiple of 4, and the src address must be 32-bit aligned.
   197  */
   198 void pvr2_vram64_read_stride( unsigned char *dest, uint32_t dest_line_bytes, sh4addr_t srcaddr,
   199                               uint32_t src_line_bytes, uint32_t line_count );
   200 /**
   201  * Dump a portion of vram to a stream from the interleaved memory address
   202  * space.
   203  */
   204 void pvr2_vram64_dump( sh4addr_t addr, uint32_t length, FILE *f );
   206 /**
   207  * Flush the indicated render buffer back to PVR. Caller is responsible for
   208  * tracking whether there is actually anything in the buffer.
   209  *
   210  * @param buffer A render buffer indicating the address to store to, and the
   211  * format the data needs to be in.
   212  * @param backBuffer TRUE to flush the back buffer, FALSE for
   213  * the front buffer.
   214  */
   215 void pvr2_render_buffer_copy_to_sh4( render_buffer_t buffer );
   217 /**
   218  * Invalidate any caching on the supplied SH4 address
   219  */
   220 gboolean pvr2_render_buffer_invalidate( sh4addr_t addr, gboolean isWrite );
   223 /**************************** Tile Accelerator ***************************/
   224 /**
   225  * Process the data in the supplied buffer as an array of TA command lists.
   226  * Any excess bytes are held pending until a complete list is sent
   227  */
   228 void pvr2_ta_write( unsigned char *buf, uint32_t length );
   230 void FASTCALL pvr2_ta_write_burst( sh4addr_t addr, unsigned char *buf );
   232 /**
   233  * Find the first polygon or sprite context in the supplied buffer of TA
   234  * data.
   235  * @return A pointer to the context, or NULL if it cannot be found
   236  */
   237 uint32_t *pvr2_ta_find_polygon_context( uint32_t *buf, uint32_t length );
   239 /**
   240  * (Re)initialize the tile accelerator in preparation for the next scene.
   241  * Normally called immediately before commencing polygon transmission.
   242  */
   243 void pvr2_ta_init( void );
   245 void pvr2_ta_reset( void );
   247 void pvr2_ta_save_state( FILE *f );
   249 int pvr2_ta_load_state( FILE *f );
   251 /****************************** YUV Converter ****************************/
   253 /**
   254  * Process a block of YUV data.
   255  */
   256 void pvr2_yuv_write( unsigned char *buf, uint32_t length );
   258 /**
   259  * Initialize the YUV converter.
   260  */
   261 void pvr2_yuv_init( uint32_t target_addr );
   263 void pvr2_yuv_set_config( uint32_t config );
   265 void pvr2_yuv_save_state( FILE *f );
   267 int pvr2_yuv_load_state( FILE *f );
   269 /********************************* Renderer ******************************/
   271 /**
   272  * Render the current scene stored in PVR ram to the GL back buffer.
   273  */
   274 void pvr2_scene_render( render_buffer_t buffer );
   276 /**
   277  * Perform the initial once-off GL setup, usually immediately after the GL
   278  * context is first bound.
   279  */
   280 void pvr2_setup_gl_context();
   282 void render_backplane( uint32_t *polygon, uint32_t width, uint32_t height, uint32_t mode );
   284 void render_autosort_tile( pvraddr_t tile_entry, int render_mode );
   286 struct polygon_struct;
   287 void gl_render_triangle( struct polygon_struct *poly, int index );
   289 void gl_render_tilelist( pvraddr_t tile_entry, gboolean set_depth );
   291 render_buffer_t pvr2_create_render_buffer( sh4addr_t addr, int width, int height, GLuint tex_id );
   293 void pvr2_finish_render_buffer( render_buffer_t buffer );
   295 void pvr2_destroy_render_buffer( render_buffer_t buffer );
   298 /**
   299  * Structure to hold a complete unpacked vertex (excluding modifier
   300  * volume parameters - generate separate vertexes in that case).
   301  */
   302 struct vertex_unpacked {
   303     float x,y,z;
   304     float u,v;            /* Texture coordinates */
   305     float rgba[4];        /* Fragment colour (RGBA order) */
   306     float offset_rgba[4]; /* Offset color (RGBA order) */
   307 };
   309 /****************************** Texture Cache ****************************/
   311 /**
   312  * Initialize the texture cache.
   313  */
   314 void texcache_init( void );
   316 /**
   317  * Initialize the GL side of the texture cache (texture ids and such).
   318  */
   319 void texcache_gl_init( gboolean withShaders );
   321 /**
   322  * Flush all textures and delete. The cache will be non-functional until
   323  * the next call to texcache_init(). This would typically be done if
   324  * switching GL targets.
   325  */
   326 void texcache_shutdown( void );
   328 /**
   329  * Flush (ie free) all textures.
   330  */
   331 void texcache_flush( void );
   333 /**
   334  * Flush all palette-based textures (if any)
   335  */
   336 void texcache_invalidate_palette(void);
   338 /**
   339  * Evict all textures contained in the page identified by a texture address.
   340  */
   341 void texcache_invalidate_page( uint32_t texture_addr );
   343 /**
   344  * Set the global texture parameters for the scene (possibly invalidating
   345  * some existing textures)
   346  */
   347 void texcache_begin_scene( uint32_t palette_mode, uint32_t stride_width );
   349 /**
   350  * Return a texture ID for the texture specified at the supplied address
   351  * and given parameters (the same sequence of bytes could in theory have
   352  * multiple interpretations). We use the texture address as the primary
   353  * index, but allow for multiple instances at each address. The texture
   354  * will be bound to the GL_TEXTURE_2D target before being returned.
   355  *
   356  * If the texture has already been bound, return the ID to which it was
   357  * bound. Otherwise obtain an unused texture ID and set it up appropriately.
   358  */
   359 GLuint texcache_get_texture( uint32_t poly2_word, uint32_t texture_word );
   361 render_buffer_t texcache_get_render_buffer( uint32_t texture_addr, int mode, int width, int height );
   363 void pvr2_check_palette_changed(void);
   365 int pvr2_render_save_scene( const gchar *filename );
   367 /**
   368  * Queue a gun position event to occur at the specified position. Unless
   369  * cancelled, when the display reaches the position:
   370  *   GUNPOS is updated with the position, and
   371  *   EVENT_MAPLE_DMA is fired.
   372  */
   373 void pvr2_queue_gun_event( int xpos, int ypos );
   375 /************************* Rendering support macros **************************/
   376 #define POLY1_VOLUME_MODE(poly1) ((poly1)&0xE0000000)
   377 #define POLY1_DEPTH_MODE(poly1) ( pvr2_poly_depthmode[(poly1)>>29] )
   378 #define POLY1_DEPTH_WRITE(poly1) (((poly1)&0x04000000) == 0 )
   379 #define POLY1_CULL_MODE(poly1) (((poly1)>>27)&0x03)
   380 #define POLY1_CULL_ENABLE(poly1) (((poly1)>>28)&0x01)
   381 #define POLY1_TEXTURED(poly1) (((poly1)&0x02000000))
   382 #define POLY1_SPECULAR(poly1) (((poly1)&0x01000000))
   383 #define POLY1_GOURAUD_SHADED(poly1) ((poly1)&0x00800000)
   384 #define POLY1_SHADE_MODEL(poly1) (((poly1)&0x00800000) ? GL_SMOOTH : GL_FLAT)
   385 #define POLY1_UV16(poly1)   (((poly1)&0x00400000))
   386 #define POLY1_SINGLE_TILE(poly1) (((poly1)&0x00200000))
   388 #define POLY2_SRC_BLEND(poly2) ( pvr2_poly_srcblend[(poly2) >> 29] )
   389 #define POLY2_DEST_BLEND(poly2) ( pvr2_poly_dstblend[((poly2)>>26)&0x07] )
   390 #define POLY2_SRC_BLEND_TARGET(poly2)    ((poly2)&0x02000000)
   391 #define POLY2_DEST_BLEND_TARGET(poly2)   ((poly2)&0x01000000)
   392 #define POLY2_FOG_MODE(poly2)            ((poly2)&0x00C00000)
   393 #define POLY2_COLOUR_CLAMP_ENABLE(poly2) ((poly2)&0x00200000)
   394 #define POLY2_ALPHA_ENABLE(poly2)        ((poly2)&0x00100000)
   395 #define POLY2_TEX_ALPHA_ENABLE(poly2)   (((poly2)&0x00080000) == 0 )
   396 #define POLY2_TEX_MIRROR_U(poly2)        ((poly2)&0x00040000)
   397 #define POLY2_TEX_MIRROR_V(poly2)        ((poly2)&0x00020000)
   398 #define POLY2_TEX_CLAMP_U(poly2)         ((poly2)&0x00010000)
   399 #define POLY2_TEX_CLAMP_V(poly2)         ((poly2)&0x00008000)
   400 #define POLY2_TEX_WIDTH(poly2) ( 1<< ((((poly2) >> 3) & 0x07 ) + 3) )
   401 #define POLY2_TEX_HEIGHT(poly2) ( 1<< (((poly2) & 0x07 ) + 3) )
   402 #define POLY2_TEX_BLEND(poly2) (((poly2) >> 6)&0x03)
   403 extern int pvr2_poly_depthmode[8];
   404 extern int pvr2_poly_srcblend[8];
   405 extern int pvr2_poly_dstblend[8];
   406 extern int pvr2_render_colour_format[8];
   408 #define CULL_NONE 0
   409 #define CULL_SMALL 1
   410 #define CULL_CCW 2
   411 #define CULL_CW 3
   413 #define SEGMENT_END         0x80000000
   414 #define SEGMENT_ZCLEAR      0x40000000
   415 #define SEGMENT_SORT_TRANS  0x20000000
   416 #define SEGMENT_START       0x10000000
   417 #define SEGMENT_X(c)        (((c) >> 2) & 0x3F)
   418 #define SEGMENT_Y(c)        (((c) >> 8) & 0x3F)
   419 #define NO_POINTER          0x80000000
   420 #define IS_TILE_PTR(p)      ( ((p)&NO_POINTER) == 0 )
   421 #define IS_LAST_SEGMENT(s)  (((s)->control) & SEGMENT_END)
   423 struct tile_segment {
   424     uint32_t control;
   425     pvraddr_t opaque_ptr;
   426     pvraddr_t opaquemod_ptr;
   427     pvraddr_t trans_ptr;
   428     pvraddr_t transmod_ptr;
   429     pvraddr_t punchout_ptr;
   430 };
   433 struct tile_bounds {
   434     int32_t x1, y1, x2, y2;
   435 };
   437 #ifdef __cplusplus
   438 }
   439 #endif
   441 #endif /* !lxdream_pvr2_H */
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