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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 335:fb890e1814c0
prev333:e29561c998f5
next337:cdd757aa8e8c
author nkeynes
date Sat Jan 27 12:03:53 2007 +0000 (13 years ago)
permissions -rw-r--r--
last change Start working towards more thorough interlaced support
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     1 /**
     2  * $Id: pvr2.h,v 1.31 2007-01-27 12:03:53 nkeynes Exp $
     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 #include "dream.h"
    20 #include "mem.h"
    21 #include "display.h"
    22 #include "pvr2/pvr2mmio.h"
    23 #include <GL/gl.h>
    25 typedef unsigned int pvraddr_t;
    26 typedef unsigned int pvr64addr_t;
    28 #define DISPMODE_ENABLE      0x00000001 /* Display enable */
    29 #define DISPMODE_LINEDOUBLE  0x00000002 /* scanline double */
    30 #define DISPMODE_COLFMT      0x0000000C /* Colour mode */
    31 #define DISPMODE_CLOCKDIV    0x08000000 /* Clock divide-by-2 */
    33 #define DISPSIZE_MODULO 0x3FF00000 /* line skip +1 (32-bit words)*/
    34 #define DISPSIZE_LPF    0x000FFC00 /* lines per field */
    35 #define DISPSIZE_PPL    0x000003FF /* pixel words (32 bit) per line */
    37 #define DISPCFG_VP 0x00000001 /* V-sync polarity */
    38 #define DISPCFG_HP 0x00000002 /* H-sync polarity */
    39 #define DISPCFG_I  0x00000010 /* Interlace enable */
    40 #define DISPCFG_BS 0x000000C0 /* Broadcast standard */
    41 #define DISPCFG_VO 0x00000100 /* Video output enable */
    43 #define BS_NTSC 0x00000000
    44 #define BS_PAL  0x00000040
    45 #define BS_PALM 0x00000080 /* ? */
    46 #define BS_PALN 0x000000C0 /* ? */
    48 #define PVR2_RAM_BASE 0x05000000
    49 #define PVR2_RAM_BASE_INT 0x04000000
    50 #define PVR2_RAM_SIZE (8 * 1024 * 1024)
    51 #define PVR2_RAM_PAGES (PVR2_RAM_SIZE>>12)
    52 #define PVR2_RAM_MASK 0x7FFFFF
    54 #define RENDER_ZONLY  0
    55 #define RENDER_NORMAL 1     /* Render non-modified polygons */
    56 #define RENDER_CHEAPMOD 2   /* Render cheap-modified polygons */
    57 #define RENDER_FULLMOD 3    /* Render the fully-modified version of the polygons */
    59 void pvr2_next_frame( void );
    60 void pvr2_set_base_address( uint32_t );
    61 int pvr2_get_frame_count( void );
    62 gboolean pvr2_save_next_scene( const gchar *filename );
    64 #define PVR2_CMD_END_OF_LIST 0x00
    65 #define PVR2_CMD_USER_CLIP   0x20
    66 #define PVR2_CMD_POLY_OPAQUE 0x80
    67 #define PVR2_CMD_MOD_OPAQUE  0x81
    68 #define PVR2_CMD_POLY_TRANS  0x82
    69 #define PVR2_CMD_MOD_TRANS   0x83
    70 #define PVR2_CMD_POLY_PUNCHOUT 0x84
    71 #define PVR2_CMD_VERTEX      0xE0
    72 #define PVR2_CMD_VERTEX_LAST 0xF0
    74 #define PVR2_POLY_TEXTURED 0x00000008
    75 #define PVR2_POLY_SPECULAR 0x00000004
    76 #define PVR2_POLY_SHADED   0x00000002
    77 #define PVR2_POLY_UV_16BIT 0x00000001
    79 #define PVR2_POLY_MODE_CLAMP_RGB 0x00200000
    80 #define PVR2_POLY_MODE_ALPHA    0x00100000
    81 #define PVR2_POLY_MODE_TEXALPHA 0x00080000
    82 #define PVR2_POLY_MODE_FLIP_S   0x00040000
    83 #define PVR2_POLY_MODE_FLIP_T   0x00020000
    84 #define PVR2_POLY_MODE_CLAMP_S  0x00010000
    85 #define PVR2_POLY_MODE_CLAMP_T  0x00008000
    87 #define PVR2_TEX_FORMAT_ARGB1555 0x00000000
    88 #define PVR2_TEX_FORMAT_RGB565   0x08000000
    89 #define PVR2_TEX_FORMAT_ARGB4444 0x10000000
    90 #define PVR2_TEX_FORMAT_YUV422   0x18000000
    91 #define PVR2_TEX_FORMAT_BUMPMAP  0x20000000
    92 #define PVR2_TEX_FORMAT_IDX4     0x28000000
    93 #define PVR2_TEX_FORMAT_IDX8     0x30000000
    95 #define PVR2_TEX_MIPMAP      0x80000000
    96 #define PVR2_TEX_COMPRESSED  0x40000000
    97 #define PVR2_TEX_FORMAT_MASK 0x38000000
    98 #define PVR2_TEX_UNTWIDDLED  0x04000000
    99 #define PVR2_TEX_STRIDE      0x02000000
   101 #define PVR2_TEX_ADDR(x) ( ((x)&0x01FFFFF)<<3 );
   102 #define PVR2_TEX_IS_MIPMAPPED(x) ( (x) & PVR2_TEX_MIPMAP )
   103 #define PVR2_TEX_IS_COMPRESSED(x) ( (x) & PVR2_TEX_COMPRESSED )
   104 #define PVR2_TEX_IS_TWIDDLED(x) (((x) & PVR2_TEX_UNTWIDDLED) == 0)
   105 #define PVR2_TEX_IS_STRIDE(x) (((x) & 0x06000000) == 0x06000000)
   107 /****************************** Frame Buffer *****************************/
   109 /**
   110  * Write a block of data to an address in the DMA range (0x10000000 - 
   111  * 0x13FFFFFF), ie TA, YUV, or texture ram.
   112  */
   113 void pvr2_dma_write( sh4addr_t dest, char *src, uint32_t length );
   115 /**
   116  * Write to the interleaved memory address space (aka 64-bit address space).
   117  */
   118 void pvr2_vram64_write( sh4addr_t dest, char *src, uint32_t length );
   120 /**
   121  * Write to the interleaved memory address space (aka 64-bit address space),
   122  * using a line length and stride.
   123  */
   124 void pvr2_vram64_write_stride( sh4addr_t dest, char *src, uint32_t line_bytes,
   125 			       uint32_t line_stride_bytes, uint32_t line_count );
   127 /**
   128  * Read from the interleaved memory address space (aka 64-bit address space)
   129  */
   130 void pvr2_vram64_read( char *dest, sh4addr_t src, uint32_t length );
   132 /**
   133  * Read a twiddled image from interleaved memory address space (aka 64-bit address
   134  * space), writing the image to the destination buffer in detwiddled format. 
   135  * Width and height must be powers of 2
   136  * This version reads 4-bit pixels.
   137  */
   138 void pvr2_vram64_read_twiddled_4( char *dest, sh4addr_t src, uint32_t width, uint32_t height );
   141 /**
   142  * Read a twiddled image from interleaved memory address space (aka 64-bit address
   143  * space), writing the image to the destination buffer in detwiddled format. 
   144  * Width and height must be powers of 2
   145  * This version reads 8-bit pixels.
   146  */
   147 void pvr2_vram64_read_twiddled_8( char *dest, sh4addr_t src, uint32_t width, uint32_t height );
   149 /**
   150  * Read a twiddled image from interleaved memory address space (aka 64-bit address
   151  * space), writing the image to the destination buffer in detwiddled format. 
   152  * Width and height must be powers of 2, and src must be 16-bit aligned.
   153  * This version reads 16-bit pixels.
   154  */
   155 void pvr2_vram64_read_twiddled_16( char *dest, sh4addr_t src, uint32_t width, uint32_t height );
   157 /**
   158  * Read an image from the interleaved memory address space (aka 64-bit address space) 
   159  * where the source and destination line sizes may differ. Note that both byte
   160  * counts must be a multiple of 4, and the src address must be 32-bit aligned.
   161  */
   162 void pvr2_vram64_read_stride( char *dest, uint32_t dest_line_bytes, sh4addr_t srcaddr,
   163 			       uint32_t src_line_bytes, uint32_t line_count );
   164 /**
   165  * Dump a portion of vram to a stream from the interleaved memory address 
   166  * space.
   167  */
   168 void pvr2_vram64_dump( sh4addr_t addr, uint32_t length, FILE *f );
   171 /**
   172  * Describes a rendering buffer that's actually held in GL, for when we need
   173  * to fetch the bits back to vram.
   174  */
   175 typedef struct pvr2_render_buffer {
   176     sh4addr_t render_addr; /* The actual address rendered to in pvr ram */
   177     uint32_t size; /* Length of rendering region in bytes */
   178     int width, height;
   179     int colour_format;
   180     int scale;
   181 } *pvr2_render_buffer_t;
   183 /**
   184  * Flush the indicated render buffer back to PVR. Caller is responsible for
   185  * tracking whether there is actually anything in the buffer.
   186  *
   187  * @param buffer A render buffer indicating the address to store to, and the
   188  * format the data needs to be in.
   189  * @param backBuffer TRUE to flush the back buffer, FALSE for 
   190  * the front buffer.
   191  */
   192 void pvr2_render_buffer_copy_to_sh4( pvr2_render_buffer_t buffer, 
   193 				     gboolean backBuffer );
   195 /**
   196  * Copy data from PVR ram into the GL render buffer. 
   197  *
   198  * @param buffer A render buffer indicating the address to read from, and the
   199  * format the data is in.
   200  * @param backBuffer TRUE to write the back buffer, FALSE for 
   201  * the front buffer.
   202  */
   203 void pvr2_render_buffer_copy_from_sh4( pvr2_render_buffer_t buffer, 
   204 				       gboolean backBuffer );
   207 /**
   208  * Invalidate any caching on the supplied SH4 address
   209  */
   210 gboolean pvr2_render_buffer_invalidate( sh4addr_t addr );
   213 /**************************** Tile Accelerator ***************************/
   214 /**
   215  * Process the data in the supplied buffer as an array of TA command lists.
   216  * Any excess bytes are held pending until a complete list is sent
   217  */
   218 void pvr2_ta_write( char *buf, uint32_t length );
   221 /**
   222  * (Re)initialize the tile accelerator in preparation for the next scene.
   223  * Normally called immediately before commencing polygon transmission.
   224  */
   225 void pvr2_ta_init( void );
   228 /****************************** YUV Converter ****************************/
   230 /**
   231  * Process a block of YUV data.
   232  */
   233 void pvr2_yuv_write( char *buf, uint32_t length );
   235 /**
   236  * Initialize the YUV converter.
   237  */
   238 void pvr2_yuv_init( uint32_t target_addr );
   240 void pvr2_yuv_set_config( uint32_t config );
   242 /********************************* Renderer ******************************/
   244 /**
   245  * Initialize the rendering pipeline.
   246  * @return TRUE on success, FALSE on failure.
   247  */
   248 gboolean pvr2_render_init( void );
   250 /**
   251  * Render the current scene stored in PVR ram to the GL back buffer.
   252  */
   253 void pvr2_render_scene( void );
   255 /**
   256  * Display the scene rendered to the supplied address.
   257  * @return TRUE if there was an available render that was displayed,
   258  * otherwise FALSE (and no action was taken)
   259  */
   260 gboolean pvr2_render_display_frame( uint32_t address );
   263 void render_backplane( uint32_t *polygon, uint32_t width, uint32_t height, uint32_t mode );
   265 void render_set_context( uint32_t *context, int render_mode );
   267 void pvr2_render_tilebuffer( int width, int height, int clipx1, int clipy1, 
   268 			     int clipx2, int clipy2 );
   270 float pvr2_render_find_maximum_z();
   271 /**
   272  * Structure to hold a complete unpacked vertex (excluding modifier
   273  * volume parameters - generate separate vertexes in that case).
   274  */
   275 struct vertex_unpacked {
   276     float x,y,z;
   277     float u,v;            /* Texture coordinates */
   278     float rgba[4];        /* Fragment colour (RGBA order) */
   279     float offset_rgba[4]; /* Offset color (RGBA order) */
   280 };
   282 void render_unpacked_vertex_array( uint32_t poly1, struct vertex_unpacked *vertexes[], 
   283 				   int num_vertexes );
   285 void render_vertex_array( uint32_t poly1, uint32_t *vertexes[], int num_vertexes, 
   286 			  int vertex_size, int render_mode );
   288 /****************************** Texture Cache ****************************/
   290 /**
   291  * Initialize the texture cache.
   292  */
   293 void texcache_init( void );
   295 /**
   296  * Initialize the GL side of the texture cache (texture ids and such).
   297  */
   298 void texcache_gl_init( void );
   300 /**
   301  * Flush all textures and delete. The cache will be non-functional until
   302  * the next call to texcache_init(). This would typically be done if
   303  * switching GL targets.
   304  */    
   305 void texcache_shutdown( void );
   307 /**
   308  * Evict all textures contained in the page identified by a texture address.
   309  */
   310 void texcache_invalidate_page( uint32_t texture_addr );
   312 /**
   313  * Return a texture ID for the texture specified at the supplied address
   314  * and given parameters (the same sequence of bytes could in theory have
   315  * multiple interpretations). We use the texture address as the primary
   316  * index, but allow for multiple instances at each address. The texture
   317  * will be bound to the GL_TEXTURE_2D target before being returned.
   318  * 
   319  * If the texture has already been bound, return the ID to which it was
   320  * bound. Otherwise obtain an unused texture ID and set it up appropriately.
   321  */
   322 GLuint texcache_get_texture( uint32_t texture_addr, int width, int height,
   323 			     int mode );
   325 /************************* Rendering support macros **************************/
   326 #define POLY1_DEPTH_MODE(poly1) ( pvr2_poly_depthmode[(poly1)>>29] )
   327 #define POLY1_DEPTH_ENABLE(poly1) (((poly1)&0x04000000) == 0 )
   328 #define POLY1_CULL_MODE(poly1) (((poly1)>>27)&0x03)
   329 #define POLY1_TEXTURED(poly1) (((poly1)&0x02000000))
   330 #define POLY1_SPECULAR(poly1) (((poly1)&0x01000000))
   331 #define POLY1_GOURAUD_SHADED(poly1) ((poly1)&0x00800000)
   332 #define POLY1_SHADE_MODEL(poly1) (((poly1)&0x00800000) ? GL_SMOOTH : GL_FLAT)
   333 #define POLY1_UV16(poly1)   (((poly1)&0x00400000))
   334 #define POLY1_SINGLE_TILE(poly1) (((poly1)&0x00200000))
   336 #define POLY2_SRC_BLEND(poly2) ( pvr2_poly_srcblend[(poly2) >> 29] )
   337 #define POLY2_DEST_BLEND(poly2) ( pvr2_poly_dstblend[((poly2)>>26)&0x07] )
   338 #define POLY2_SRC_BLEND_TARGET(poly2)    ((poly2)&0x02000000)
   339 #define POLY2_DEST_BLEND_TARGET(poly2)   ((poly2)&0x01000000)
   340 #define POLY2_COLOUR_CLAMP_ENABLE(poly2) ((poly2)&0x00200000)
   341 #define POLY2_ALPHA_ENABLE(poly2)        ((poly2)&0x00100000)
   342 #define POLY2_TEX_ALPHA_ENABLE(poly2)   (((poly2)&0x00080000) == 0 )
   343 #define POLY2_TEX_CLAMP_U(poly2)         ((poly2)&0x00010000)
   344 #define POLY2_TEX_CLAMP_V(poly2)         ((poly2)&0x00008000)
   345 #define POLY2_TEX_WIDTH(poly2) ( 1<< ((((poly2) >> 3) & 0x07 ) + 3) )
   346 #define POLY2_TEX_HEIGHT(poly2) ( 1<< (((poly2) & 0x07 ) + 3) )
   347 #define POLY2_TEX_BLEND(poly2) ( pvr2_poly_texblend[((poly2) >> 6)&0x03] )
   348 extern int pvr2_poly_depthmode[8];
   349 extern int pvr2_poly_srcblend[8];
   350 extern int pvr2_poly_dstblend[8];
   351 extern int pvr2_poly_texblend[4];
   352 extern int pvr2_render_colour_format[8];
   354 float halftofloat(uint16_t half);
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