nkeynes@653 | 1 | /**
|
nkeynes@653 | 2 | * $Id$
|
nkeynes@653 | 3 | *
|
nkeynes@653 | 4 | * Manage the internal vertex/polygon buffers and scene data structure.
|
nkeynes@653 | 5 | * Where possible this uses VBOs for the vertex + index data.
|
nkeynes@653 | 6 | *
|
nkeynes@653 | 7 | * Copyright (c) 2005 Nathan Keynes.
|
nkeynes@653 | 8 | *
|
nkeynes@653 | 9 | * This program is free software; you can redistribute it and/or modify
|
nkeynes@653 | 10 | * it under the terms of the GNU General Public License as published by
|
nkeynes@653 | 11 | * the Free Software Foundation; either version 2 of the License, or
|
nkeynes@653 | 12 | * (at your option) any later version.
|
nkeynes@653 | 13 | *
|
nkeynes@653 | 14 | * This program is distributed in the hope that it will be useful,
|
nkeynes@653 | 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
nkeynes@653 | 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
nkeynes@653 | 17 | * GNU General Public License for more details.
|
nkeynes@653 | 18 | */
|
nkeynes@653 | 19 |
|
nkeynes@653 | 20 | #include <assert.h>
|
nkeynes@653 | 21 | #include <string.h>
|
nkeynes@653 | 22 | #include <math.h>
|
nkeynes@653 | 23 | #include "lxdream.h"
|
nkeynes@653 | 24 | #include "display.h"
|
nkeynes@653 | 25 | #include "pvr2/pvr2.h"
|
nkeynes@677 | 26 | #include "pvr2/pvr2mmio.h"
|
nkeynes@653 | 27 | #include "pvr2/glutil.h"
|
nkeynes@653 | 28 | #include "pvr2/scene.h"
|
nkeynes@653 | 29 |
|
nkeynes@687 | 30 | static void unpack_bgra(uint32_t bgra, float *rgba)
|
nkeynes@687 | 31 | {
|
nkeynes@687 | 32 | rgba[0] = ((float)(((bgra&0x00FF0000)>>16) + 1)) / 256.0;
|
nkeynes@687 | 33 | rgba[1] = ((float)(((bgra&0x0000FF00)>>8) + 1)) / 256.0;
|
nkeynes@687 | 34 | rgba[2] = ((float)((bgra&0x000000FF) + 1)) / 256.0;
|
nkeynes@687 | 35 | rgba[3] = ((float)(((bgra&0xFF000000)>>24) + 1)) / 256.0;
|
nkeynes@687 | 36 | }
|
nkeynes@653 | 37 |
|
nkeynes@653 | 38 | static inline uint32_t bgra_to_rgba(uint32_t bgra)
|
nkeynes@653 | 39 | {
|
nkeynes@653 | 40 | return (bgra&0xFF00FF00) | ((bgra&0x00FF0000)>>16) | ((bgra&0x000000FF)<<16);
|
nkeynes@653 | 41 | }
|
nkeynes@653 | 42 |
|
nkeynes@653 | 43 | /**
|
nkeynes@653 | 44 | * Convert a half-float (16-bit) FP number to a regular 32-bit float.
|
nkeynes@653 | 45 | * Source is 1-bit sign, 5-bit exponent, 10-bit mantissa.
|
nkeynes@653 | 46 | * TODO: Check the correctness of this.
|
nkeynes@653 | 47 | */
|
nkeynes@653 | 48 | static float halftofloat( uint16_t half )
|
nkeynes@653 | 49 | {
|
nkeynes@653 | 50 | union {
|
nkeynes@653 | 51 | float f;
|
nkeynes@653 | 52 | uint32_t i;
|
nkeynes@653 | 53 | } temp;
|
nkeynes@653 | 54 | temp.i = ((uint32_t)half)<<16;
|
nkeynes@653 | 55 | return temp.f;
|
nkeynes@653 | 56 | }
|
nkeynes@653 | 57 |
|
nkeynes@653 | 58 |
|
nkeynes@653 | 59 |
|
nkeynes@653 | 60 |
|
nkeynes@653 | 61 |
|
nkeynes@653 | 62 | struct pvr2_scene_struct pvr2_scene;
|
nkeynes@653 | 63 |
|
nkeynes@653 | 64 | static gboolean vbo_init = FALSE;
|
nkeynes@669 | 65 |
|
nkeynes@669 | 66 | #ifdef ENABLE_VERTEX_BUFFER
|
nkeynes@653 | 67 | static gboolean vbo_supported = FALSE;
|
nkeynes@669 | 68 | #endif
|
nkeynes@653 | 69 |
|
nkeynes@653 | 70 | /**
|
nkeynes@653 | 71 | * Test for VBO support, and allocate all the system memory needed for the
|
nkeynes@653 | 72 | * temporary structures. GL context must have been initialized before this
|
nkeynes@653 | 73 | * point.
|
nkeynes@653 | 74 | */
|
nkeynes@653 | 75 | void pvr2_scene_init()
|
nkeynes@653 | 76 | {
|
nkeynes@653 | 77 | if( !vbo_init ) {
|
nkeynes@653 | 78 | #ifdef ENABLE_VERTEX_BUFFER
|
nkeynes@736 | 79 | if( isGLVertexBufferSupported() ) {
|
nkeynes@736 | 80 | vbo_supported = TRUE;
|
nkeynes@736 | 81 | pvr2_scene.vbo_id = 1;
|
nkeynes@736 | 82 | }
|
nkeynes@653 | 83 | #endif
|
nkeynes@736 | 84 | pvr2_scene.vertex_array = NULL;
|
nkeynes@736 | 85 | pvr2_scene.vertex_array_size = 0;
|
nkeynes@736 | 86 | pvr2_scene.poly_array = g_malloc( MAX_POLY_BUFFER_SIZE );
|
nkeynes@736 | 87 | pvr2_scene.buf_to_poly_map = g_malloc0( BUF_POLY_MAP_SIZE );
|
nkeynes@736 | 88 | vbo_init = TRUE;
|
nkeynes@653 | 89 | }
|
nkeynes@653 | 90 | }
|
nkeynes@653 | 91 |
|
nkeynes@653 | 92 | /**
|
nkeynes@653 | 93 | * Clear the scene data structures in preparation for fresh data
|
nkeynes@653 | 94 | */
|
nkeynes@653 | 95 | void pvr2_scene_reset()
|
nkeynes@653 | 96 | {
|
nkeynes@653 | 97 | pvr2_scene.poly_count = 0;
|
nkeynes@653 | 98 | pvr2_scene.vertex_count = 0;
|
nkeynes@653 | 99 | memset( pvr2_scene.buf_to_poly_map, 0, BUF_POLY_MAP_SIZE );
|
nkeynes@653 | 100 | }
|
nkeynes@653 | 101 |
|
nkeynes@653 | 102 | void pvr2_scene_shutdown()
|
nkeynes@653 | 103 | {
|
nkeynes@653 | 104 | #ifdef ENABLE_VERTEX_BUFFER
|
nkeynes@653 | 105 | if( vbo_supported ) {
|
nkeynes@736 | 106 | glBindBufferARB( GL_ARRAY_BUFFER_ARB, 0 );
|
nkeynes@736 | 107 | glDeleteBuffersARB( 1, &pvr2_scene.vbo_id );
|
nkeynes@736 | 108 | pvr2_scene.vbo_id = 0;
|
nkeynes@653 | 109 | } else {
|
nkeynes@653 | 110 | #endif
|
nkeynes@736 | 111 | g_free( pvr2_scene.vertex_array );
|
nkeynes@736 | 112 | pvr2_scene.vertex_array = NULL;
|
nkeynes@653 | 113 | #ifdef ENABLE_VERTEX_BUFFER
|
nkeynes@653 | 114 | }
|
nkeynes@653 | 115 | #endif
|
nkeynes@653 | 116 |
|
nkeynes@653 | 117 | g_free( pvr2_scene.poly_array );
|
nkeynes@653 | 118 | pvr2_scene.poly_array = NULL;
|
nkeynes@653 | 119 | g_free( pvr2_scene.buf_to_poly_map );
|
nkeynes@653 | 120 | pvr2_scene.buf_to_poly_map = NULL;
|
nkeynes@653 | 121 | vbo_init = FALSE;
|
nkeynes@653 | 122 | }
|
nkeynes@653 | 123 |
|
nkeynes@653 | 124 | void *vertex_buffer_map()
|
nkeynes@653 | 125 | {
|
nkeynes@687 | 126 | // Allow 8 vertexes for the background (4+4)
|
nkeynes@687 | 127 | uint32_t size = (pvr2_scene.vertex_count + 8) * sizeof(struct vertex_struct);
|
nkeynes@653 | 128 | #ifdef ENABLE_VERTEX_BUFFER
|
nkeynes@653 | 129 | if( vbo_supported ) {
|
nkeynes@690 | 130 | glGetError();
|
nkeynes@736 | 131 | glBindBufferARB( GL_ARRAY_BUFFER_ARB, pvr2_scene.vbo_id );
|
nkeynes@736 | 132 | if( size > pvr2_scene.vertex_array_size ) {
|
nkeynes@736 | 133 | glBufferDataARB( GL_ARRAY_BUFFER_ARB, size, NULL, GL_DYNAMIC_DRAW_ARB );
|
nkeynes@736 | 134 | int status = glGetError();
|
nkeynes@736 | 135 | if( status != 0 ) {
|
nkeynes@736 | 136 | fprintf( stderr, "Error %08X allocating vertex buffer\n", status );
|
nkeynes@736 | 137 | abort();
|
nkeynes@736 | 138 | }
|
nkeynes@736 | 139 | pvr2_scene.vertex_array_size = size;
|
nkeynes@736 | 140 | }
|
nkeynes@736 | 141 | pvr2_scene.vertex_array = glMapBufferARB( GL_ARRAY_BUFFER_ARB, GL_WRITE_ONLY_ARB );
|
nkeynes@736 | 142 | assert(pvr2_scene.vertex_array != NULL );
|
nkeynes@653 | 143 | } else {
|
nkeynes@653 | 144 | #endif
|
nkeynes@736 | 145 | if( size > pvr2_scene.vertex_array_size ) {
|
nkeynes@736 | 146 | pvr2_scene.vertex_array = g_realloc( pvr2_scene.vertex_array, size );
|
nkeynes@736 | 147 | }
|
nkeynes@653 | 148 | #ifdef ENABLE_VERTEX_BUFFER
|
nkeynes@653 | 149 | }
|
nkeynes@653 | 150 | #endif
|
nkeynes@653 | 151 | return pvr2_scene.vertex_array;
|
nkeynes@653 | 152 | }
|
nkeynes@653 | 153 |
|
nkeynes@653 | 154 | gboolean vertex_buffer_unmap()
|
nkeynes@653 | 155 | {
|
nkeynes@653 | 156 | #ifdef ENABLE_VERTEX_BUFFER
|
nkeynes@653 | 157 | if( vbo_supported ) {
|
nkeynes@736 | 158 | pvr2_scene.vertex_array = NULL;
|
nkeynes@736 | 159 | return glUnmapBufferARB( GL_ARRAY_BUFFER_ARB );
|
nkeynes@653 | 160 | } else {
|
nkeynes@736 | 161 | return TRUE;
|
nkeynes@653 | 162 | }
|
nkeynes@653 | 163 | #else
|
nkeynes@653 | 164 | return TRUE;
|
nkeynes@653 | 165 | #endif
|
nkeynes@653 | 166 | }
|
nkeynes@653 | 167 |
|
nkeynes@653 | 168 | static struct polygon_struct *scene_add_polygon( pvraddr_t poly_idx, int vertex_count,
|
nkeynes@687 | 169 | gboolean is_modified )
|
nkeynes@653 | 170 | {
|
nkeynes@653 | 171 | int vert_mul = is_modified ? 2 : 1;
|
nkeynes@653 | 172 |
|
nkeynes@653 | 173 | if( pvr2_scene.buf_to_poly_map[poly_idx] != NULL ) {
|
nkeynes@687 | 174 | if( vertex_count > pvr2_scene.buf_to_poly_map[poly_idx]->vertex_count ) {
|
nkeynes@687 | 175 | pvr2_scene.vertex_count += (vertex_count - pvr2_scene.buf_to_poly_map[poly_idx]->vertex_count) * vert_mul;
|
nkeynes@687 | 176 | pvr2_scene.buf_to_poly_map[poly_idx]->vertex_count = vertex_count;
|
nkeynes@687 | 177 | }
|
nkeynes@687 | 178 | return pvr2_scene.buf_to_poly_map[poly_idx];
|
nkeynes@653 | 179 | } else {
|
nkeynes@687 | 180 | struct polygon_struct *poly = &pvr2_scene.poly_array[pvr2_scene.poly_count++];
|
nkeynes@687 | 181 | poly->context = &pvr2_scene.pvr2_pbuf[poly_idx];
|
nkeynes@687 | 182 | poly->vertex_count = vertex_count;
|
nkeynes@687 | 183 | poly->vertex_index = -1;
|
nkeynes@687 | 184 | poly->mod_vertex_index = -1;
|
nkeynes@687 | 185 | poly->next = NULL;
|
nkeynes@687 | 186 | pvr2_scene.buf_to_poly_map[poly_idx] = poly;
|
nkeynes@687 | 187 | pvr2_scene.vertex_count += (vertex_count * vert_mul);
|
nkeynes@687 | 188 | return poly;
|
nkeynes@653 | 189 | }
|
nkeynes@653 | 190 | }
|
nkeynes@653 | 191 |
|
nkeynes@653 | 192 | /**
|
nkeynes@653 | 193 | * Decode a single PVR2 renderable vertex (opaque/trans/punch-out, but not shadow
|
nkeynes@653 | 194 | * volume)
|
nkeynes@653 | 195 | * @param vert Pointer to output vertex structure
|
nkeynes@653 | 196 | * @param poly1 First word of polygon context (needed to understand vertex)
|
nkeynes@653 | 197 | * @param poly2 Second word of polygon context
|
nkeynes@653 | 198 | * @param pvr2_data Pointer to raw pvr2 vertex data (in VRAM)
|
nkeynes@653 | 199 | * @param modify_offset Offset in 32-bit words to the tex/color data. 0 for
|
nkeynes@653 | 200 | * the normal vertex, half the vertex length for the modified vertex.
|
nkeynes@653 | 201 | */
|
nkeynes@653 | 202 | static void pvr2_decode_render_vertex( struct vertex_struct *vert, uint32_t poly1,
|
nkeynes@736 | 203 | uint32_t poly2, uint32_t *pvr2_data,
|
nkeynes@736 | 204 | int modify_offset )
|
nkeynes@653 | 205 | {
|
nkeynes@653 | 206 | gboolean force_alpha = !POLY2_ALPHA_ENABLE(poly2);
|
nkeynes@653 | 207 | union pvr2_data_type {
|
nkeynes@687 | 208 | uint32_t *ival;
|
nkeynes@687 | 209 | float *fval;
|
nkeynes@653 | 210 | } data;
|
nkeynes@653 | 211 |
|
nkeynes@653 | 212 | data.ival = pvr2_data;
|
nkeynes@687 | 213 |
|
nkeynes@653 | 214 | vert->x = *data.fval++;
|
nkeynes@653 | 215 | vert->y = *data.fval++;
|
nkeynes@653 | 216 |
|
nkeynes@653 | 217 | float z = *data.fval++;
|
nkeynes@653 | 218 | if( !isfinite(z) ) {
|
nkeynes@687 | 219 | z = 0;
|
nkeynes@653 | 220 | } else if( z != 0 ) {
|
nkeynes@687 | 221 | z = 1/z;
|
nkeynes@653 | 222 | }
|
nkeynes@653 | 223 | if( z > pvr2_scene.bounds[5] ) {
|
nkeynes@687 | 224 | pvr2_scene.bounds[5] = z;
|
nkeynes@653 | 225 | } else if( z < pvr2_scene.bounds[4] && z != 0 ) {
|
nkeynes@687 | 226 | pvr2_scene.bounds[4] = z;
|
nkeynes@653 | 227 | }
|
nkeynes@653 | 228 | vert->z = z;
|
nkeynes@653 | 229 | data.ival += modify_offset;
|
nkeynes@653 | 230 |
|
nkeynes@687 | 231 |
|
nkeynes@653 | 232 | if( POLY1_TEXTURED(poly1) ) {
|
nkeynes@687 | 233 | if( POLY1_UV16(poly1) ) {
|
nkeynes@687 | 234 | vert->u = halftofloat( *data.ival>>16 );
|
nkeynes@687 | 235 | vert->v = halftofloat( *data.ival );
|
nkeynes@687 | 236 | data.ival++;
|
nkeynes@687 | 237 | } else {
|
nkeynes@687 | 238 | vert->u = *data.fval++;
|
nkeynes@687 | 239 | vert->v = *data.fval++;
|
nkeynes@687 | 240 | }
|
nkeynes@687 | 241 | if( POLY2_TEX_BLEND(poly2) == 1 ) {
|
nkeynes@687 | 242 | force_alpha = TRUE;
|
nkeynes@687 | 243 | }
|
nkeynes@653 | 244 | }
|
nkeynes@687 | 245 | unpack_bgra(*data.ival++, vert->rgba);
|
nkeynes@687 | 246 | if( POLY1_SPECULAR(poly1) ) {
|
nkeynes@687 | 247 | unpack_bgra(*data.ival++, vert->offset_rgba);
|
nkeynes@687 | 248 | vert->offset_rgba[3] = 1.0;
|
nkeynes@687 | 249 | } else {
|
nkeynes@687 | 250 | vert->offset_rgba[0] = 0.0;
|
nkeynes@687 | 251 | vert->offset_rgba[1] = 0.0;
|
nkeynes@687 | 252 | vert->offset_rgba[2] = 0.0;
|
nkeynes@687 | 253 | vert->offset_rgba[3] = 0.0;
|
nkeynes@687 | 254 | }
|
nkeynes@687 | 255 |
|
nkeynes@653 | 256 | if( force_alpha ) {
|
nkeynes@687 | 257 | vert->rgba[3] = 1.0;
|
nkeynes@687 | 258 | vert->offset_rgba[3] = 1.0;
|
nkeynes@653 | 259 | }
|
nkeynes@653 | 260 | }
|
nkeynes@653 | 261 |
|
nkeynes@653 | 262 | /**
|
nkeynes@687 | 263 | * Compute texture, colour, and z values for 1 or more result points by interpolating from
|
nkeynes@687 | 264 | * a set of 3 input points. The result point(s) must define their x,y.
|
nkeynes@653 | 265 | */
|
nkeynes@687 | 266 | static void scene_compute_vertexes( struct vertex_struct *result,
|
nkeynes@687 | 267 | int result_count,
|
nkeynes@736 | 268 | struct vertex_struct *input,
|
nkeynes@736 | 269 | gboolean is_solid_shaded )
|
nkeynes@653 | 270 | {
|
nkeynes@687 | 271 | int i,j;
|
nkeynes@653 | 272 | float sx = input[2].x - input[1].x;
|
nkeynes@653 | 273 | float sy = input[2].y - input[1].y;
|
nkeynes@653 | 274 | float tx = input[0].x - input[1].x;
|
nkeynes@653 | 275 | float ty = input[0].y - input[1].y;
|
nkeynes@653 | 276 |
|
nkeynes@653 | 277 | float detxy = ((sy) * (tx)) - ((ty) * (sx));
|
nkeynes@653 | 278 | if( detxy == 0 ) {
|
nkeynes@687 | 279 | // If the input points fall on a line, they don't define a usable
|
nkeynes@687 | 280 | // polygon - the PVR2 takes the last input point as the result in
|
nkeynes@687 | 281 | // this case.
|
nkeynes@687 | 282 | for( i=0; i<result_count; i++ ) {
|
nkeynes@687 | 283 | float x = result[i].x;
|
nkeynes@687 | 284 | float y = result[i].y;
|
nkeynes@687 | 285 | memcpy( &result[i], &input[2], sizeof(struct vertex_struct) );
|
nkeynes@687 | 286 | result[i].x = x;
|
nkeynes@687 | 287 | result[i].y = y;
|
nkeynes@687 | 288 | }
|
nkeynes@687 | 289 | return;
|
nkeynes@653 | 290 | }
|
nkeynes@653 | 291 | float sz = input[2].z - input[1].z;
|
nkeynes@653 | 292 | float tz = input[0].z - input[1].z;
|
nkeynes@653 | 293 | float su = input[2].u - input[1].u;
|
nkeynes@653 | 294 | float tu = input[0].u - input[1].u;
|
nkeynes@653 | 295 | float sv = input[2].v - input[1].v;
|
nkeynes@653 | 296 | float tv = input[0].v - input[1].v;
|
nkeynes@653 | 297 |
|
nkeynes@687 | 298 | for( i=0; i<result_count; i++ ) {
|
nkeynes@687 | 299 | float t = ((result[i].x - input[1].x) * sy -
|
nkeynes@687 | 300 | (result[i].y - input[1].y) * sx) / detxy;
|
nkeynes@687 | 301 | float s = ((result[i].y - input[1].y) * tx -
|
nkeynes@687 | 302 | (result[i].x - input[1].x) * ty) / detxy;
|
nkeynes@687 | 303 |
|
nkeynes@687 | 304 | float rz = input[1].z + (t*tz) + (s*sz);
|
nkeynes@687 | 305 | if( rz > pvr2_scene.bounds[5] ) {
|
nkeynes@687 | 306 | pvr2_scene.bounds[5] = rz;
|
nkeynes@687 | 307 | } else if( rz < pvr2_scene.bounds[4] ) {
|
nkeynes@687 | 308 | pvr2_scene.bounds[4] = rz;
|
nkeynes@687 | 309 | }
|
nkeynes@687 | 310 | result[i].z = rz;
|
nkeynes@687 | 311 | result[i].u = input[1].u + (t*tu) + (s*su);
|
nkeynes@687 | 312 | result[i].v = input[1].v + (t*tv) + (s*sv);
|
nkeynes@687 | 313 |
|
nkeynes@687 | 314 | if( is_solid_shaded ) {
|
nkeynes@687 | 315 | memcpy( result->rgba, input[2].rgba, sizeof(result->rgba) );
|
nkeynes@687 | 316 | memcpy( result->offset_rgba, input[2].offset_rgba, sizeof(result->offset_rgba) );
|
nkeynes@687 | 317 | } else {
|
nkeynes@687 | 318 | float *rgba0 = input[0].rgba;
|
nkeynes@687 | 319 | float *rgba1 = input[1].rgba;
|
nkeynes@687 | 320 | float *rgba2 = input[2].rgba;
|
nkeynes@687 | 321 | float *rgba3 = result[i].rgba;
|
nkeynes@687 | 322 | for( j=0; j<8; j++ ) {
|
nkeynes@687 | 323 | float tc = *rgba0++ - *rgba1;
|
nkeynes@687 | 324 | float sc = *rgba2++ - *rgba1;
|
nkeynes@687 | 325 | float rc = *rgba1++ + (t*tc) + (s*sc);
|
nkeynes@687 | 326 | *rgba3++ = rc;
|
nkeynes@687 | 327 | }
|
nkeynes@687 | 328 | }
|
nkeynes@653 | 329 | }
|
nkeynes@653 | 330 | }
|
nkeynes@653 | 331 |
|
nkeynes@653 | 332 | static void scene_add_vertexes( pvraddr_t poly_idx, int vertex_length,
|
nkeynes@736 | 333 | gboolean is_modified )
|
nkeynes@653 | 334 | {
|
nkeynes@653 | 335 | struct polygon_struct *poly = pvr2_scene.buf_to_poly_map[poly_idx];
|
nkeynes@653 | 336 | uint32_t *ptr = &pvr2_scene.pvr2_pbuf[poly_idx];
|
nkeynes@653 | 337 | uint32_t *context = ptr;
|
nkeynes@653 | 338 | unsigned int i;
|
nkeynes@653 | 339 |
|
nkeynes@653 | 340 | if( poly->vertex_index == -1 ) {
|
nkeynes@687 | 341 | ptr += (is_modified ? 5 : 3 );
|
nkeynes@687 | 342 | poly->vertex_index = pvr2_scene.vertex_index;
|
nkeynes@687 | 343 |
|
nkeynes@687 | 344 | assert( poly != NULL );
|
nkeynes@687 | 345 | assert( pvr2_scene.vertex_index + poly->vertex_count <= pvr2_scene.vertex_count );
|
nkeynes@687 | 346 | for( i=0; i<poly->vertex_count; i++ ) {
|
nkeynes@687 | 347 | pvr2_decode_render_vertex( &pvr2_scene.vertex_array[pvr2_scene.vertex_index++], context[0], context[1], ptr, 0 );
|
nkeynes@687 | 348 | ptr += vertex_length;
|
nkeynes@687 | 349 | }
|
nkeynes@687 | 350 | if( is_modified ) {
|
nkeynes@687 | 351 | int mod_offset = (vertex_length - 3)>>1;
|
nkeynes@687 | 352 | assert( pvr2_scene.vertex_index + poly->vertex_count <= pvr2_scene.vertex_count );
|
nkeynes@687 | 353 | ptr = &pvr2_scene.pvr2_pbuf[poly_idx] + 5;
|
nkeynes@687 | 354 | poly->mod_vertex_index = pvr2_scene.vertex_index;
|
nkeynes@687 | 355 | for( i=0; i<poly->vertex_count; i++ ) {
|
nkeynes@687 | 356 | pvr2_decode_render_vertex( &pvr2_scene.vertex_array[pvr2_scene.vertex_index++], context[0], context[3], ptr, mod_offset );
|
nkeynes@687 | 357 | ptr += vertex_length;
|
nkeynes@687 | 358 | }
|
nkeynes@687 | 359 | }
|
nkeynes@653 | 360 | }
|
nkeynes@653 | 361 | }
|
nkeynes@653 | 362 |
|
nkeynes@653 | 363 | static void scene_add_quad_vertexes( pvraddr_t poly_idx, int vertex_length,
|
nkeynes@736 | 364 | gboolean is_modified )
|
nkeynes@653 | 365 | {
|
nkeynes@653 | 366 | struct polygon_struct *poly = pvr2_scene.buf_to_poly_map[poly_idx];
|
nkeynes@653 | 367 | uint32_t *ptr = &pvr2_scene.pvr2_pbuf[poly_idx];
|
nkeynes@653 | 368 | uint32_t *context = ptr;
|
nkeynes@653 | 369 | unsigned int i;
|
nkeynes@653 | 370 |
|
nkeynes@653 | 371 | if( poly->vertex_index == -1 ) {
|
nkeynes@736 | 372 | // Construct it locally and copy to the vertex buffer, as the VBO is
|
nkeynes@736 | 373 | // allowed to be horribly slow for reads (ie it could be direct-mapped
|
nkeynes@736 | 374 | // vram).
|
nkeynes@736 | 375 | struct vertex_struct quad[4];
|
nkeynes@736 | 376 |
|
nkeynes@736 | 377 | assert( poly != NULL );
|
nkeynes@736 | 378 | assert( pvr2_scene.vertex_index + poly->vertex_count <= pvr2_scene.vertex_count );
|
nkeynes@736 | 379 | ptr += (is_modified ? 5 : 3 );
|
nkeynes@736 | 380 | poly->vertex_index = pvr2_scene.vertex_index;
|
nkeynes@736 | 381 | for( i=0; i<4; i++ ) {
|
nkeynes@736 | 382 | pvr2_decode_render_vertex( &quad[i], context[0], context[1], ptr, 0 );
|
nkeynes@736 | 383 | ptr += vertex_length;
|
nkeynes@736 | 384 | }
|
nkeynes@687 | 385 | scene_compute_vertexes( &quad[3], 1, &quad[0], !POLY1_GOURAUD_SHADED(context[0]) );
|
nkeynes@736 | 386 | // Swap last two vertexes (quad arrangement => tri strip arrangement)
|
nkeynes@736 | 387 | memcpy( &pvr2_scene.vertex_array[pvr2_scene.vertex_index], quad, sizeof(struct vertex_struct)*2 );
|
nkeynes@736 | 388 | memcpy( &pvr2_scene.vertex_array[pvr2_scene.vertex_index+2], &quad[3], sizeof(struct vertex_struct) );
|
nkeynes@736 | 389 | memcpy( &pvr2_scene.vertex_array[pvr2_scene.vertex_index+3], &quad[2], sizeof(struct vertex_struct) );
|
nkeynes@736 | 390 | pvr2_scene.vertex_index += 4;
|
nkeynes@736 | 391 |
|
nkeynes@736 | 392 | if( is_modified ) {
|
nkeynes@736 | 393 | int mod_offset = (vertex_length - 3)>>1;
|
nkeynes@736 | 394 | assert( pvr2_scene.vertex_index + poly->vertex_count <= pvr2_scene.vertex_count );
|
nkeynes@736 | 395 | ptr = &pvr2_scene.pvr2_pbuf[poly_idx] + 5;
|
nkeynes@736 | 396 | poly->mod_vertex_index = pvr2_scene.vertex_index;
|
nkeynes@736 | 397 | for( i=0; i<4; i++ ) {
|
nkeynes@736 | 398 | pvr2_decode_render_vertex( &quad[4], context[0], context[3], ptr, mod_offset );
|
nkeynes@736 | 399 | ptr += vertex_length;
|
nkeynes@736 | 400 | }
|
nkeynes@736 | 401 | scene_compute_vertexes( &quad[3], 1, &quad[0], !POLY1_GOURAUD_SHADED(context[0]) );
|
nkeynes@736 | 402 | memcpy( &pvr2_scene.vertex_array[pvr2_scene.vertex_index], quad, sizeof(struct vertex_struct)*2 );
|
nkeynes@736 | 403 | memcpy( &pvr2_scene.vertex_array[pvr2_scene.vertex_index+2], &quad[3], sizeof(struct vertex_struct) );
|
nkeynes@736 | 404 | memcpy( &pvr2_scene.vertex_array[pvr2_scene.vertex_index+3], &quad[2], sizeof(struct vertex_struct) );
|
nkeynes@736 | 405 | pvr2_scene.vertex_index += 4;
|
nkeynes@736 | 406 | }
|
nkeynes@653 | 407 | }
|
nkeynes@653 | 408 | }
|
nkeynes@653 | 409 |
|
nkeynes@653 | 410 | static void scene_extract_polygons( pvraddr_t tile_entry )
|
nkeynes@653 | 411 | {
|
nkeynes@653 | 412 | uint32_t *tile_list = (uint32_t *)(video_base+tile_entry);
|
nkeynes@653 | 413 | do {
|
nkeynes@687 | 414 | uint32_t entry = *tile_list++;
|
nkeynes@687 | 415 | if( entry >> 28 == 0x0F ) {
|
nkeynes@687 | 416 | break;
|
nkeynes@687 | 417 | } else if( entry >> 28 == 0x0E ) {
|
nkeynes@687 | 418 | tile_list = (uint32_t *)(video_base + (entry&0x007FFFFF));
|
nkeynes@687 | 419 | } else {
|
nkeynes@687 | 420 | pvraddr_t polyaddr = entry&0x000FFFFF;
|
nkeynes@687 | 421 | int is_modified = (entry & 0x01000000) && pvr2_scene.full_shadow;
|
nkeynes@687 | 422 | int vertex_length = (entry >> 21) & 0x07;
|
nkeynes@687 | 423 | int context_length = 3;
|
nkeynes@687 | 424 | if( is_modified ) {
|
nkeynes@687 | 425 | context_length = 5;
|
nkeynes@687 | 426 | vertex_length <<= 1 ;
|
nkeynes@687 | 427 | }
|
nkeynes@687 | 428 | vertex_length += 3;
|
nkeynes@687 | 429 |
|
nkeynes@687 | 430 | if( (entry & 0xE0000000) == 0x80000000 ) {
|
nkeynes@687 | 431 | /* Triangle(s) */
|
nkeynes@687 | 432 | int strip_count = ((entry >> 25) & 0x0F)+1;
|
nkeynes@687 | 433 | int polygon_length = 3 * vertex_length + context_length;
|
nkeynes@687 | 434 | int i;
|
nkeynes@687 | 435 | struct polygon_struct *last_poly = NULL;
|
nkeynes@687 | 436 | for( i=0; i<strip_count; i++ ) {
|
nkeynes@687 | 437 | struct polygon_struct *poly = scene_add_polygon( polyaddr, 3, is_modified );
|
nkeynes@687 | 438 | polyaddr += polygon_length;
|
nkeynes@687 | 439 | if( last_poly != NULL && last_poly->next == NULL ) {
|
nkeynes@687 | 440 | last_poly->next = poly;
|
nkeynes@687 | 441 | }
|
nkeynes@687 | 442 | last_poly = poly;
|
nkeynes@687 | 443 | }
|
nkeynes@687 | 444 | } else if( (entry & 0xE0000000) == 0xA0000000 ) {
|
nkeynes@687 | 445 | /* Sprite(s) */
|
nkeynes@687 | 446 | int strip_count = ((entry >> 25) & 0x0F)+1;
|
nkeynes@687 | 447 | int polygon_length = 4 * vertex_length + context_length;
|
nkeynes@687 | 448 | int i;
|
nkeynes@687 | 449 | struct polygon_struct *last_poly = NULL;
|
nkeynes@687 | 450 | for( i=0; i<strip_count; i++ ) {
|
nkeynes@687 | 451 | struct polygon_struct *poly = scene_add_polygon( polyaddr, 4, is_modified );
|
nkeynes@687 | 452 | polyaddr += polygon_length;
|
nkeynes@687 | 453 | if( last_poly != NULL && last_poly->next == NULL ) {
|
nkeynes@687 | 454 | last_poly->next = poly;
|
nkeynes@687 | 455 | }
|
nkeynes@687 | 456 | last_poly = poly;
|
nkeynes@687 | 457 | }
|
nkeynes@687 | 458 | } else {
|
nkeynes@687 | 459 | /* Polygon */
|
nkeynes@687 | 460 | int i, last = -1;
|
nkeynes@687 | 461 | for( i=5; i>=0; i-- ) {
|
nkeynes@687 | 462 | if( entry & (0x40000000>>i) ) {
|
nkeynes@687 | 463 | last = i;
|
nkeynes@687 | 464 | break;
|
nkeynes@687 | 465 | }
|
nkeynes@687 | 466 | }
|
nkeynes@687 | 467 | if( last != -1 ) {
|
nkeynes@687 | 468 | scene_add_polygon( polyaddr, last+3, is_modified );
|
nkeynes@687 | 469 | }
|
nkeynes@687 | 470 | }
|
nkeynes@687 | 471 | }
|
nkeynes@653 | 472 | } while( 1 );
|
nkeynes@653 | 473 | }
|
nkeynes@653 | 474 |
|
nkeynes@653 | 475 | static void scene_extract_vertexes( pvraddr_t tile_entry )
|
nkeynes@653 | 476 | {
|
nkeynes@653 | 477 | uint32_t *tile_list = (uint32_t *)(video_base+tile_entry);
|
nkeynes@653 | 478 | do {
|
nkeynes@736 | 479 | uint32_t entry = *tile_list++;
|
nkeynes@736 | 480 | if( entry >> 28 == 0x0F ) {
|
nkeynes@736 | 481 | break;
|
nkeynes@736 | 482 | } else if( entry >> 28 == 0x0E ) {
|
nkeynes@736 | 483 | tile_list = (uint32_t *)(video_base + (entry&0x007FFFFF));
|
nkeynes@736 | 484 | } else {
|
nkeynes@736 | 485 | pvraddr_t polyaddr = entry&0x000FFFFF;
|
nkeynes@736 | 486 | int is_modified = (entry & 0x01000000) && pvr2_scene.full_shadow;
|
nkeynes@736 | 487 | int vertex_length = (entry >> 21) & 0x07;
|
nkeynes@736 | 488 | int context_length = 3;
|
nkeynes@736 | 489 | if( is_modified ) {
|
nkeynes@736 | 490 | context_length = 5;
|
nkeynes@736 | 491 | vertex_length <<=1 ;
|
nkeynes@736 | 492 | }
|
nkeynes@736 | 493 | vertex_length += 3;
|
nkeynes@736 | 494 |
|
nkeynes@736 | 495 | if( (entry & 0xE0000000) == 0x80000000 ) {
|
nkeynes@736 | 496 | /* Triangle(s) */
|
nkeynes@736 | 497 | int strip_count = ((entry >> 25) & 0x0F)+1;
|
nkeynes@736 | 498 | int polygon_length = 3 * vertex_length + context_length;
|
nkeynes@736 | 499 | int i;
|
nkeynes@736 | 500 | for( i=0; i<strip_count; i++ ) {
|
nkeynes@736 | 501 | scene_add_vertexes( polyaddr, vertex_length, is_modified );
|
nkeynes@736 | 502 | polyaddr += polygon_length;
|
nkeynes@736 | 503 | }
|
nkeynes@736 | 504 | } else if( (entry & 0xE0000000) == 0xA0000000 ) {
|
nkeynes@736 | 505 | /* Sprite(s) */
|
nkeynes@736 | 506 | int strip_count = ((entry >> 25) & 0x0F)+1;
|
nkeynes@736 | 507 | int polygon_length = 4 * vertex_length + context_length;
|
nkeynes@736 | 508 | int i;
|
nkeynes@736 | 509 | for( i=0; i<strip_count; i++ ) {
|
nkeynes@736 | 510 | scene_add_quad_vertexes( polyaddr, vertex_length, is_modified );
|
nkeynes@736 | 511 | polyaddr += polygon_length;
|
nkeynes@736 | 512 | }
|
nkeynes@736 | 513 | } else {
|
nkeynes@736 | 514 | /* Polygon */
|
nkeynes@736 | 515 | int i, last = -1;
|
nkeynes@736 | 516 | for( i=5; i>=0; i-- ) {
|
nkeynes@736 | 517 | if( entry & (0x40000000>>i) ) {
|
nkeynes@736 | 518 | last = i;
|
nkeynes@736 | 519 | break;
|
nkeynes@736 | 520 | }
|
nkeynes@736 | 521 | }
|
nkeynes@736 | 522 | if( last != -1 ) {
|
nkeynes@736 | 523 | scene_add_vertexes( polyaddr, vertex_length, is_modified );
|
nkeynes@736 | 524 | }
|
nkeynes@736 | 525 | }
|
nkeynes@736 | 526 | }
|
nkeynes@653 | 527 | } while( 1 );
|
nkeynes@653 | 528 | }
|
nkeynes@653 | 529 |
|
nkeynes@687 | 530 | static void scene_extract_background( void )
|
nkeynes@687 | 531 | {
|
nkeynes@687 | 532 | uint32_t bgplane = MMIO_READ(PVR2, RENDER_BGPLANE);
|
nkeynes@687 | 533 | int vertex_length = (bgplane >> 24) & 0x07;
|
nkeynes@687 | 534 | int context_length = 3, i;
|
nkeynes@687 | 535 | int is_modified = (bgplane & 0x08000000) && pvr2_scene.full_shadow;
|
nkeynes@687 | 536 |
|
nkeynes@687 | 537 | struct polygon_struct *poly = &pvr2_scene.poly_array[pvr2_scene.poly_count++];
|
nkeynes@687 | 538 | uint32_t *context = &pvr2_scene.pvr2_pbuf[(bgplane & 0x00FFFFFF)>>3];
|
nkeynes@687 | 539 | poly->context = context;
|
nkeynes@687 | 540 | poly->vertex_count = 4;
|
nkeynes@687 | 541 | poly->vertex_index = pvr2_scene.vertex_count;
|
nkeynes@687 | 542 | if( is_modified ) {
|
nkeynes@687 | 543 | context_length = 5;
|
nkeynes@687 | 544 | vertex_length <<= 1;
|
nkeynes@687 | 545 | poly->mod_vertex_index = pvr2_scene.vertex_count + 4;
|
nkeynes@687 | 546 | pvr2_scene.vertex_count += 8;
|
nkeynes@687 | 547 | } else {
|
nkeynes@687 | 548 | poly->mod_vertex_index = -1;
|
nkeynes@687 | 549 | pvr2_scene.vertex_count += 4;
|
nkeynes@687 | 550 | }
|
nkeynes@687 | 551 | vertex_length += 3;
|
nkeynes@687 | 552 | context_length += (bgplane & 0x07) * vertex_length;
|
nkeynes@687 | 553 |
|
nkeynes@687 | 554 | poly->next = NULL;
|
nkeynes@687 | 555 | pvr2_scene.bkgnd_poly = poly;
|
nkeynes@736 | 556 |
|
nkeynes@687 | 557 | struct vertex_struct base_vertexes[3];
|
nkeynes@687 | 558 | uint32_t *ptr = context + context_length;
|
nkeynes@687 | 559 | for( i=0; i<3; i++ ) {
|
nkeynes@687 | 560 | pvr2_decode_render_vertex( &base_vertexes[i], context[0], context[1],
|
nkeynes@736 | 561 | ptr, 0 );
|
nkeynes@687 | 562 | ptr += vertex_length;
|
nkeynes@687 | 563 | }
|
nkeynes@687 | 564 | struct vertex_struct *result_vertexes = &pvr2_scene.vertex_array[poly->vertex_index];
|
nkeynes@687 | 565 | result_vertexes[0].x = result_vertexes[0].y = 0;
|
nkeynes@687 | 566 | result_vertexes[1].x = result_vertexes[3].x = pvr2_scene.buffer_width;
|
nkeynes@687 | 567 | result_vertexes[1].y = result_vertexes[2].x = 0;
|
nkeynes@687 | 568 | result_vertexes[2].y = result_vertexes[3].y = pvr2_scene.buffer_height;
|
nkeynes@687 | 569 | scene_compute_vertexes( result_vertexes, 4, base_vertexes, !POLY1_GOURAUD_SHADED(context[0]) );
|
nkeynes@687 | 570 |
|
nkeynes@687 | 571 | if( is_modified ) {
|
nkeynes@687 | 572 | int mod_offset = (vertex_length - 3)>>1;
|
nkeynes@687 | 573 | ptr = context + context_length;
|
nkeynes@687 | 574 | for( i=0; i<3; i++ ) {
|
nkeynes@687 | 575 | pvr2_decode_render_vertex( &base_vertexes[i], context[0], context[3],
|
nkeynes@736 | 576 | ptr, mod_offset );
|
nkeynes@687 | 577 | ptr += vertex_length;
|
nkeynes@687 | 578 | }
|
nkeynes@687 | 579 | result_vertexes = &pvr2_scene.vertex_array[poly->mod_vertex_index];
|
nkeynes@687 | 580 | result_vertexes[0].x = result_vertexes[0].y = 0;
|
nkeynes@687 | 581 | result_vertexes[1].x = result_vertexes[3].x = pvr2_scene.buffer_width;
|
nkeynes@687 | 582 | result_vertexes[1].y = result_vertexes[2].x = 0;
|
nkeynes@687 | 583 | result_vertexes[2].y = result_vertexes[3].y = pvr2_scene.buffer_height;
|
nkeynes@687 | 584 | scene_compute_vertexes( result_vertexes, 4, base_vertexes, !POLY1_GOURAUD_SHADED(context[0]) );
|
nkeynes@687 | 585 | }
|
nkeynes@736 | 586 |
|
nkeynes@687 | 587 | }
|
nkeynes@687 | 588 |
|
nkeynes@687 | 589 |
|
nkeynes@653 | 590 | uint32_t pvr2_scene_buffer_width()
|
nkeynes@653 | 591 | {
|
nkeynes@653 | 592 | return pvr2_scene.buffer_width;
|
nkeynes@653 | 593 | }
|
nkeynes@653 | 594 |
|
nkeynes@653 | 595 | uint32_t pvr2_scene_buffer_height()
|
nkeynes@653 | 596 | {
|
nkeynes@653 | 597 | return pvr2_scene.buffer_height;
|
nkeynes@653 | 598 | }
|
nkeynes@653 | 599 |
|
nkeynes@653 | 600 | /**
|
nkeynes@653 | 601 | * Extract the current scene into the rendering structures. We run two passes
|
nkeynes@653 | 602 | * - first pass extracts the polygons into pvr2_scene.poly_array (finding vertex counts),
|
nkeynes@653 | 603 | * second pass extracts the vertex data into the VBO/vertex array.
|
nkeynes@653 | 604 | *
|
nkeynes@653 | 605 | * Difficult to do in single pass as we don't generally know the size of a
|
nkeynes@653 | 606 | * polygon for certain until we've seen all tiles containing it. It also means we
|
nkeynes@653 | 607 | * can count the vertexes and allocate the appropriate size VBO.
|
nkeynes@653 | 608 | *
|
nkeynes@653 | 609 | * FIXME: accesses into VRAM need to be bounds-checked properly
|
nkeynes@653 | 610 | */
|
nkeynes@653 | 611 | void pvr2_scene_read( void )
|
nkeynes@653 | 612 | {
|
nkeynes@653 | 613 | pvr2_scene_init();
|
nkeynes@653 | 614 | pvr2_scene_reset();
|
nkeynes@653 | 615 |
|
nkeynes@653 | 616 | pvr2_scene.bounds[0] = MMIO_READ( PVR2, RENDER_HCLIP ) & 0x03FF;
|
nkeynes@653 | 617 | pvr2_scene.bounds[1] = ((MMIO_READ( PVR2, RENDER_HCLIP ) >> 16) & 0x03FF) + 1;
|
nkeynes@653 | 618 | pvr2_scene.bounds[2] = MMIO_READ( PVR2, RENDER_VCLIP ) & 0x03FF;
|
nkeynes@653 | 619 | pvr2_scene.bounds[3] = ((MMIO_READ( PVR2, RENDER_VCLIP ) >> 16) & 0x03FF) + 1;
|
nkeynes@653 | 620 | pvr2_scene.bounds[4] = pvr2_scene.bounds[5] = MMIO_READF( PVR2, RENDER_FARCLIP );
|
nkeynes@653 | 621 |
|
nkeynes@653 | 622 | uint32_t *tilebuffer = (uint32_t *)(video_base + MMIO_READ( PVR2, RENDER_TILEBASE ));
|
nkeynes@653 | 623 | uint32_t *segment = tilebuffer;
|
nkeynes@653 | 624 | pvr2_scene.segment_list = (struct tile_segment *)tilebuffer;
|
nkeynes@653 | 625 | pvr2_scene.pvr2_pbuf = (uint32_t *)(video_base + MMIO_READ(PVR2,RENDER_POLYBASE));
|
nkeynes@653 | 626 | pvr2_scene.full_shadow = MMIO_READ( PVR2, RENDER_SHADOW ) & 0x100 ? FALSE : TRUE;
|
nkeynes@687 | 627 |
|
nkeynes@653 | 628 | int max_tile_x = 0;
|
nkeynes@653 | 629 | int max_tile_y = 0;
|
nkeynes@653 | 630 | int obj_config = MMIO_READ( PVR2, RENDER_OBJCFG );
|
nkeynes@653 | 631 | int isp_config = MMIO_READ( PVR2, RENDER_ISPCFG );
|
nkeynes@653 | 632 |
|
nkeynes@653 | 633 | if( (obj_config & 0x00200000) == 0 ) {
|
nkeynes@687 | 634 | if( isp_config & 1 ) {
|
nkeynes@687 | 635 | pvr2_scene.sort_mode = SORT_NEVER;
|
nkeynes@687 | 636 | } else {
|
nkeynes@687 | 637 | pvr2_scene.sort_mode = SORT_ALWAYS;
|
nkeynes@687 | 638 | }
|
nkeynes@653 | 639 | } else {
|
nkeynes@687 | 640 | pvr2_scene.sort_mode = SORT_TILEFLAG;
|
nkeynes@653 | 641 | }
|
nkeynes@653 | 642 |
|
nkeynes@653 | 643 | // Pass 1: Extract polygon list
|
nkeynes@653 | 644 | uint32_t control;
|
nkeynes@653 | 645 | int i;
|
nkeynes@653 | 646 | do {
|
nkeynes@687 | 647 | control = *segment++;
|
nkeynes@687 | 648 | int tile_x = SEGMENT_X(control);
|
nkeynes@687 | 649 | int tile_y = SEGMENT_Y(control);
|
nkeynes@687 | 650 | if( tile_x > max_tile_x ) {
|
nkeynes@687 | 651 | max_tile_x = tile_x;
|
nkeynes@687 | 652 | }
|
nkeynes@687 | 653 | if( tile_y > max_tile_y ) {
|
nkeynes@687 | 654 | max_tile_y = tile_y;
|
nkeynes@687 | 655 | }
|
nkeynes@687 | 656 | for( i=0; i<5; i++ ) {
|
nkeynes@687 | 657 | if( (*segment & NO_POINTER) == 0 ) {
|
nkeynes@687 | 658 | scene_extract_polygons( *segment );
|
nkeynes@687 | 659 | }
|
nkeynes@687 | 660 | segment++;
|
nkeynes@687 | 661 | }
|
nkeynes@653 | 662 | } while( (control & SEGMENT_END) == 0 );
|
nkeynes@653 | 663 |
|
nkeynes@653 | 664 | pvr2_scene.buffer_width = (max_tile_x+1)<<5;
|
nkeynes@653 | 665 | pvr2_scene.buffer_height = (max_tile_y+1)<<5;
|
nkeynes@653 | 666 |
|
nkeynes@687 | 667 | // Pass 2: Extract vertex data
|
nkeynes@687 | 668 | vertex_buffer_map();
|
nkeynes@687 | 669 | pvr2_scene.vertex_index = 0;
|
nkeynes@687 | 670 | segment = tilebuffer;
|
nkeynes@687 | 671 | do {
|
nkeynes@687 | 672 | control = *segment++;
|
nkeynes@687 | 673 | for( i=0; i<5; i++ ) {
|
nkeynes@687 | 674 | if( (*segment & NO_POINTER) == 0 ) {
|
nkeynes@687 | 675 | scene_extract_vertexes( *segment );
|
nkeynes@687 | 676 | }
|
nkeynes@687 | 677 | segment++;
|
nkeynes@687 | 678 | }
|
nkeynes@687 | 679 | } while( (control & SEGMENT_END) == 0 );
|
nkeynes@736 | 680 |
|
nkeynes@687 | 681 | scene_extract_background();
|
nkeynes@736 | 682 |
|
nkeynes@687 | 683 | vertex_buffer_unmap();
|
nkeynes@653 | 684 | }
|
nkeynes@653 | 685 |
|
nkeynes@653 | 686 | /**
|
nkeynes@653 | 687 | * Dump the current scene to file in a (mostly) human readable form
|
nkeynes@653 | 688 | */
|
nkeynes@653 | 689 | void pvr2_scene_dump( FILE *f )
|
nkeynes@653 | 690 | {
|
nkeynes@653 | 691 | int i,j;
|
nkeynes@653 | 692 |
|
nkeynes@653 | 693 | fprintf( f, "Polygons: %d\n", pvr2_scene.poly_count );
|
nkeynes@653 | 694 | for( i=0; i<pvr2_scene.poly_count; i++ ) {
|
nkeynes@736 | 695 | struct polygon_struct *poly = &pvr2_scene.poly_array[i];
|
nkeynes@736 | 696 | fprintf( f, " %08X ", ((unsigned char *)poly->context) - video_base );
|
nkeynes@736 | 697 | switch( poly->vertex_count ) {
|
nkeynes@736 | 698 | case 3: fprintf( f, "Tri " ); break;
|
nkeynes@736 | 699 | case 4: fprintf( f, "Quad " ); break;
|
nkeynes@736 | 700 | default: fprintf( f,"%d-Strip ", poly->vertex_count-2 ); break;
|
nkeynes@736 | 701 | }
|
nkeynes@736 | 702 | fprintf( f, "%08X %08X %08X ", poly->context[0], poly->context[1], poly->context[2] );
|
nkeynes@736 | 703 | if( poly->mod_vertex_index != -1 ) {
|
nkeynes@736 | 704 | fprintf( f, "%08X %08X\n", poly->context[3], poly->context[5] );
|
nkeynes@736 | 705 | } else {
|
nkeynes@736 | 706 | fprintf( f, "\n" );
|
nkeynes@736 | 707 | }
|
nkeynes@736 | 708 |
|
nkeynes@736 | 709 | for( j=0; j<poly->vertex_count; j++ ) {
|
nkeynes@736 | 710 | struct vertex_struct *v = &pvr2_scene.vertex_array[poly->vertex_index+j];
|
nkeynes@736 | 711 | fprintf( f, " %.5f %.5f %.5f, (%.5f,%.5f) %08X %08X\n", v->x, v->y, v->z, v->u, v->v,
|
nkeynes@736 | 712 | v->rgba, v->offset_rgba );
|
nkeynes@736 | 713 | }
|
nkeynes@736 | 714 | if( poly->mod_vertex_index != -1 ) {
|
nkeynes@736 | 715 | fprintf( f, " ---\n" );
|
nkeynes@736 | 716 | for( j=0; j<poly->vertex_count; j++ ) {
|
nkeynes@736 | 717 | struct vertex_struct *v = &pvr2_scene.vertex_array[poly->mod_vertex_index+j];
|
nkeynes@736 | 718 | fprintf( f, " %.5f %.5f %.5f, (%.5f,%.5f) %08X %08X\n", v->x, v->y, v->z, v->u, v->v,
|
nkeynes@736 | 719 | v->rgba, v->offset_rgba );
|
nkeynes@736 | 720 | }
|
nkeynes@736 | 721 | }
|
nkeynes@653 | 722 | }
|
nkeynes@653 | 723 |
|
nkeynes@653 | 724 | }
|