filename | src/pvr2/pvr2.h |
changeset | 352:f0df7a6d4703 |
prev | 348:15b2de02558d |
next | 429:e581b90c3fb3 |
author | nkeynes |
date | Sun Feb 11 10:09:32 2007 +0000 (17 years ago) |
permissions | -rw-r--r-- |
last change | Bug 27: Implement opengl framebuffer objects Rewrite much of the final video output stage. Now uses generic "render buffers", implemented on GL using framebuffer objects + textures. |
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1 /**
2 * $Id: pvr2.h,v 1.35 2007-02-11 10:09:32 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_POLY_FOG_LOOKUP 0x00000000
88 #define PVR2_POLY_FOG_VERTEX 0x00400000
89 #define PVR2_POLY_FOG_DISABLED 0x00800000
90 #define PVR2_POLY_FOG_LOOKUP2 0x00C00000
93 #define PVR2_TEX_FORMAT_ARGB1555 0x00000000
94 #define PVR2_TEX_FORMAT_RGB565 0x08000000
95 #define PVR2_TEX_FORMAT_ARGB4444 0x10000000
96 #define PVR2_TEX_FORMAT_YUV422 0x18000000
97 #define PVR2_TEX_FORMAT_BUMPMAP 0x20000000
98 #define PVR2_TEX_FORMAT_IDX4 0x28000000
99 #define PVR2_TEX_FORMAT_IDX8 0x30000000
101 #define PVR2_TEX_MIPMAP 0x80000000
102 #define PVR2_TEX_COMPRESSED 0x40000000
103 #define PVR2_TEX_FORMAT_MASK 0x38000000
104 #define PVR2_TEX_UNTWIDDLED 0x04000000
105 #define PVR2_TEX_STRIDE 0x02000000
106 #define PVR2_TEX_IS_PALETTE(mode) ( (mode & PVR2_TEX_FORMAT_MASK) == PVR2_TEX_FORMAT_IDX4 || (mode&PVR2_TEX_FORMAT_MASK) == PVR2_TEX_FORMAT_IDX8 )
109 #define PVR2_TEX_ADDR(x) ( ((x)&0x01FFFFF)<<3 );
110 #define PVR2_TEX_IS_MIPMAPPED(x) ( ((x) & 0x84000000) == 0x80000000 )
111 #define PVR2_TEX_IS_COMPRESSED(x) ( (x) & PVR2_TEX_COMPRESSED )
112 #define PVR2_TEX_IS_TWIDDLED(x) (((x) & PVR2_TEX_UNTWIDDLED) == 0)
113 #define PVR2_TEX_IS_STRIDE(x) (((x) & 0x06000000) == 0x06000000)
115 /****************************** Frame Buffer *****************************/
117 /**
118 * Write a block of data to an address in the DMA range (0x10000000 -
119 * 0x13FFFFFF), ie TA, YUV, or texture ram.
120 */
121 void pvr2_dma_write( sh4addr_t dest, char *src, uint32_t length );
123 /**
124 * Write to the interleaved memory address space (aka 64-bit address space).
125 */
126 void pvr2_vram64_write( sh4addr_t dest, char *src, uint32_t length );
128 /**
129 * Write to the interleaved memory address space (aka 64-bit address space),
130 * using a line length and stride.
131 */
132 void pvr2_vram64_write_stride( sh4addr_t dest, char *src, uint32_t line_bytes,
133 uint32_t line_stride_bytes, uint32_t line_count );
135 /**
136 * Read from the interleaved memory address space (aka 64-bit address space)
137 */
138 void pvr2_vram64_read( char *dest, sh4addr_t src, uint32_t length );
140 /**
141 * Read a twiddled image from interleaved memory address space (aka 64-bit address
142 * space), writing the image to the destination buffer in detwiddled format.
143 * Width and height must be powers of 2
144 * This version reads 4-bit pixels.
145 */
146 void pvr2_vram64_read_twiddled_4( 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
153 * This version reads 8-bit pixels.
154 */
155 void pvr2_vram64_read_twiddled_8( char *dest, sh4addr_t src, uint32_t width, uint32_t height );
157 /**
158 * Read a twiddled image from interleaved memory address space (aka 64-bit address
159 * space), writing the image to the destination buffer in detwiddled format.
160 * Width and height must be powers of 2, and src must be 16-bit aligned.
161 * This version reads 16-bit pixels.
162 */
163 void pvr2_vram64_read_twiddled_16( char *dest, sh4addr_t src, uint32_t width, uint32_t height );
165 /**
166 * Read an image from the interleaved memory address space (aka 64-bit address space)
167 * where the source and destination line sizes may differ. Note that both byte
168 * counts must be a multiple of 4, and the src address must be 32-bit aligned.
169 */
170 void pvr2_vram64_read_stride( char *dest, uint32_t dest_line_bytes, sh4addr_t srcaddr,
171 uint32_t src_line_bytes, uint32_t line_count );
172 /**
173 * Dump a portion of vram to a stream from the interleaved memory address
174 * space.
175 */
176 void pvr2_vram64_dump( sh4addr_t addr, uint32_t length, FILE *f );
178 /**
179 * Flush the indicated render buffer back to PVR. Caller is responsible for
180 * tracking whether there is actually anything in the buffer.
181 *
182 * @param buffer A render buffer indicating the address to store to, and the
183 * format the data needs to be in.
184 * @param backBuffer TRUE to flush the back buffer, FALSE for
185 * the front buffer.
186 */
187 void pvr2_render_buffer_copy_to_sh4( render_buffer_t buffer );
189 /**
190 * Invalidate any caching on the supplied SH4 address
191 */
192 gboolean pvr2_render_buffer_invalidate( sh4addr_t addr, gboolean isWrite );
195 /**************************** Tile Accelerator ***************************/
196 /**
197 * Process the data in the supplied buffer as an array of TA command lists.
198 * Any excess bytes are held pending until a complete list is sent
199 */
200 void pvr2_ta_write( char *buf, uint32_t length );
203 /**
204 * (Re)initialize the tile accelerator in preparation for the next scene.
205 * Normally called immediately before commencing polygon transmission.
206 */
207 void pvr2_ta_init( void );
210 /****************************** YUV Converter ****************************/
212 /**
213 * Process a block of YUV data.
214 */
215 void pvr2_yuv_write( char *buf, uint32_t length );
217 /**
218 * Initialize the YUV converter.
219 */
220 void pvr2_yuv_init( uint32_t target_addr );
222 void pvr2_yuv_set_config( uint32_t config );
224 /********************************* Renderer ******************************/
226 /**
227 * Render the current scene stored in PVR ram to the GL back buffer.
228 */
229 void pvr2_render_scene( render_buffer_t buffer );
231 /**
232 * Display the scene rendered to the supplied address.
233 * @return TRUE if there was an available render that was displayed,
234 * otherwise FALSE (and no action was taken)
235 */
236 gboolean pvr2_render_display_frame( uint32_t address );
239 void render_backplane( uint32_t *polygon, uint32_t width, uint32_t height, uint32_t mode );
241 void render_set_context( uint32_t *context, int render_mode );
243 void pvr2_render_tilebuffer( int width, int height, int clipx1, int clipy1,
244 int clipx2, int clipy2 );
246 float pvr2_render_find_maximum_z();
247 /**
248 * Structure to hold a complete unpacked vertex (excluding modifier
249 * volume parameters - generate separate vertexes in that case).
250 */
251 struct vertex_unpacked {
252 float x,y,z;
253 float u,v; /* Texture coordinates */
254 float rgba[4]; /* Fragment colour (RGBA order) */
255 float offset_rgba[4]; /* Offset color (RGBA order) */
256 };
258 void render_unpacked_vertex_array( uint32_t poly1, struct vertex_unpacked *vertexes[],
259 int num_vertexes );
261 void render_vertex_array( uint32_t poly1, uint32_t *vertexes[], int num_vertexes,
262 int vertex_size, int render_mode );
264 /****************************** Texture Cache ****************************/
266 /**
267 * Initialize the texture cache.
268 */
269 void texcache_init( void );
271 /**
272 * Initialize the GL side of the texture cache (texture ids and such).
273 */
274 void texcache_gl_init( void );
276 /**
277 * Flush all textures and delete. The cache will be non-functional until
278 * the next call to texcache_init(). This would typically be done if
279 * switching GL targets.
280 */
281 void texcache_shutdown( void );
283 /**
284 * Evict all textures contained in the page identified by a texture address.
285 */
286 void texcache_invalidate_page( uint32_t texture_addr );
288 /**
289 * Return a texture ID for the texture specified at the supplied address
290 * and given parameters (the same sequence of bytes could in theory have
291 * multiple interpretations). We use the texture address as the primary
292 * index, but allow for multiple instances at each address. The texture
293 * will be bound to the GL_TEXTURE_2D target before being returned.
294 *
295 * If the texture has already been bound, return the ID to which it was
296 * bound. Otherwise obtain an unused texture ID and set it up appropriately.
297 */
298 GLuint texcache_get_texture( uint32_t texture_addr, int width, int height,
299 int mode );
301 /************************* Rendering support macros **************************/
302 #define POLY1_DEPTH_MODE(poly1) ( pvr2_poly_depthmode[(poly1)>>29] )
303 #define POLY1_DEPTH_ENABLE(poly1) (((poly1)&0x04000000) == 0 )
304 #define POLY1_CULL_MODE(poly1) (((poly1)>>27)&0x03)
305 #define POLY1_TEXTURED(poly1) (((poly1)&0x02000000))
306 #define POLY1_SPECULAR(poly1) (((poly1)&0x01000000))
307 #define POLY1_GOURAUD_SHADED(poly1) ((poly1)&0x00800000)
308 #define POLY1_SHADE_MODEL(poly1) (((poly1)&0x00800000) ? GL_SMOOTH : GL_FLAT)
309 #define POLY1_UV16(poly1) (((poly1)&0x00400000))
310 #define POLY1_SINGLE_TILE(poly1) (((poly1)&0x00200000))
312 #define POLY2_SRC_BLEND(poly2) ( pvr2_poly_srcblend[(poly2) >> 29] )
313 #define POLY2_DEST_BLEND(poly2) ( pvr2_poly_dstblend[((poly2)>>26)&0x07] )
314 #define POLY2_SRC_BLEND_TARGET(poly2) ((poly2)&0x02000000)
315 #define POLY2_DEST_BLEND_TARGET(poly2) ((poly2)&0x01000000)
316 #define POLY2_FOG_MODE(poly2) ((poly2)&0x00C00000)
317 #define POLY2_COLOUR_CLAMP_ENABLE(poly2) ((poly2)&0x00200000)
318 #define POLY2_ALPHA_ENABLE(poly2) ((poly2)&0x00100000)
319 #define POLY2_TEX_ALPHA_ENABLE(poly2) (((poly2)&0x00080000) == 0 )
320 #define POLY2_TEX_CLAMP_U(poly2) ((poly2)&0x00010000)
321 #define POLY2_TEX_CLAMP_V(poly2) ((poly2)&0x00008000)
322 #define POLY2_TEX_WIDTH(poly2) ( 1<< ((((poly2) >> 3) & 0x07 ) + 3) )
323 #define POLY2_TEX_HEIGHT(poly2) ( 1<< (((poly2) & 0x07 ) + 3) )
324 #define POLY2_TEX_BLEND(poly2) (((poly2) >> 6)&0x03)
325 extern int pvr2_poly_depthmode[8];
326 extern int pvr2_poly_srcblend[8];
327 extern int pvr2_poly_dstblend[8];
328 extern int pvr2_poly_texblend[4];
329 extern int pvr2_render_colour_format[8];
331 float halftofloat(uint16_t half);
.