nkeynes@635 | 1 | /**
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nkeynes@636 | 2 | * $Id$
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nkeynes@635 | 3 | *
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nkeynes@827 | 4 | * Manage the internal vertex/polygon buffers and scene data structure.
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nkeynes@635 | 5 | * Where possible this uses VBOs for the vertex + index data.
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nkeynes@635 | 6 | *
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nkeynes@635 | 7 | * Copyright (c) 2005 Nathan Keynes.
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nkeynes@635 | 8 | *
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nkeynes@635 | 9 | * This program is free software; you can redistribute it and/or modify
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nkeynes@635 | 10 | * it under the terms of the GNU General Public License as published by
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nkeynes@635 | 11 | * the Free Software Foundation; either version 2 of the License, or
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nkeynes@635 | 12 | * (at your option) any later version.
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nkeynes@635 | 13 | *
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nkeynes@635 | 14 | * This program is distributed in the hope that it will be useful,
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nkeynes@635 | 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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nkeynes@635 | 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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nkeynes@635 | 17 | * GNU General Public License for more details.
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nkeynes@635 | 18 | */
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nkeynes@635 | 19 |
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nkeynes@635 | 20 | #include <assert.h>
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nkeynes@635 | 21 | #include <string.h>
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nkeynes@645 | 22 | #include <math.h>
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nkeynes@635 | 23 | #include "lxdream.h"
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nkeynes@635 | 24 | #include "display.h"
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nkeynes@635 | 25 | #include "pvr2/pvr2.h"
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nkeynes@677 | 26 | #include "pvr2/pvr2mmio.h"
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nkeynes@635 | 27 | #include "pvr2/glutil.h"
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nkeynes@635 | 28 | #include "pvr2/scene.h"
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nkeynes@635 | 29 |
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nkeynes@863 | 30 | #define U8TOFLOAT(n) (((float)((n)+1))/256.0)
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nkeynes@863 | 31 |
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nkeynes@687 | 32 | static void unpack_bgra(uint32_t bgra, float *rgba)
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nkeynes@687 | 33 | {
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nkeynes@687 | 34 | rgba[0] = ((float)(((bgra&0x00FF0000)>>16) + 1)) / 256.0;
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nkeynes@687 | 35 | rgba[1] = ((float)(((bgra&0x0000FF00)>>8) + 1)) / 256.0;
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nkeynes@687 | 36 | rgba[2] = ((float)((bgra&0x000000FF) + 1)) / 256.0;
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nkeynes@687 | 37 | rgba[3] = ((float)(((bgra&0xFF000000)>>24) + 1)) / 256.0;
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nkeynes@687 | 38 | }
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nkeynes@635 | 39 |
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nkeynes@639 | 40 | static inline uint32_t bgra_to_rgba(uint32_t bgra)
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nkeynes@639 | 41 | {
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nkeynes@639 | 42 | return (bgra&0xFF00FF00) | ((bgra&0x00FF0000)>>16) | ((bgra&0x000000FF)<<16);
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nkeynes@639 | 43 | }
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nkeynes@639 | 44 |
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nkeynes@645 | 45 | /**
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nkeynes@645 | 46 | * Convert a half-float (16-bit) FP number to a regular 32-bit float.
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nkeynes@645 | 47 | * Source is 1-bit sign, 5-bit exponent, 10-bit mantissa.
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nkeynes@645 | 48 | * TODO: Check the correctness of this.
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nkeynes@645 | 49 | */
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nkeynes@645 | 50 | static float halftofloat( uint16_t half )
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nkeynes@645 | 51 | {
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nkeynes@645 | 52 | union {
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nkeynes@645 | 53 | float f;
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nkeynes@645 | 54 | uint32_t i;
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nkeynes@645 | 55 | } temp;
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nkeynes@645 | 56 | temp.i = ((uint32_t)half)<<16;
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nkeynes@645 | 57 | return temp.f;
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nkeynes@645 | 58 | }
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nkeynes@645 | 59 |
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nkeynes@847 | 60 | static float parse_fog_density( uint32_t value )
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nkeynes@847 | 61 | {
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nkeynes@847 | 62 | union {
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nkeynes@847 | 63 | uint32_t i;
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nkeynes@847 | 64 | float f;
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nkeynes@847 | 65 | } u;
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nkeynes@847 | 66 | u.i = (((value+127)&0xFF)<<23)|((value & 0xFF00)<<7);
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nkeynes@847 | 67 | return u.f;
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nkeynes@847 | 68 | }
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nkeynes@645 | 69 |
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nkeynes@635 | 70 | struct pvr2_scene_struct pvr2_scene;
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nkeynes@635 | 71 |
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nkeynes@635 | 72 | static gboolean vbo_init = FALSE;
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nkeynes@863 | 73 | static float scene_shadow_intensity = 0.0;
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nkeynes@669 | 74 |
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nkeynes@669 | 75 | #ifdef ENABLE_VERTEX_BUFFER
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nkeynes@635 | 76 | static gboolean vbo_supported = FALSE;
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nkeynes@669 | 77 | #endif
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nkeynes@635 | 78 |
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nkeynes@635 | 79 | /**
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nkeynes@635 | 80 | * Test for VBO support, and allocate all the system memory needed for the
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nkeynes@635 | 81 | * temporary structures. GL context must have been initialized before this
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nkeynes@635 | 82 | * point.
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nkeynes@635 | 83 | */
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nkeynes@635 | 84 | void pvr2_scene_init()
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nkeynes@635 | 85 | {
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nkeynes@635 | 86 | if( !vbo_init ) {
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nkeynes@645 | 87 | #ifdef ENABLE_VERTEX_BUFFER
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nkeynes@736 | 88 | if( isGLVertexBufferSupported() ) {
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nkeynes@736 | 89 | vbo_supported = TRUE;
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nkeynes@736 | 90 | pvr2_scene.vbo_id = 1;
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nkeynes@736 | 91 | }
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nkeynes@645 | 92 | #endif
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nkeynes@736 | 93 | pvr2_scene.vertex_array = NULL;
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nkeynes@736 | 94 | pvr2_scene.vertex_array_size = 0;
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nkeynes@736 | 95 | pvr2_scene.poly_array = g_malloc( MAX_POLY_BUFFER_SIZE );
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nkeynes@736 | 96 | pvr2_scene.buf_to_poly_map = g_malloc0( BUF_POLY_MAP_SIZE );
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nkeynes@736 | 97 | vbo_init = TRUE;
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nkeynes@635 | 98 | }
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nkeynes@635 | 99 | }
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nkeynes@635 | 100 |
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nkeynes@639 | 101 | /**
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nkeynes@639 | 102 | * Clear the scene data structures in preparation for fresh data
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nkeynes@639 | 103 | */
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nkeynes@639 | 104 | void pvr2_scene_reset()
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nkeynes@639 | 105 | {
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nkeynes@639 | 106 | pvr2_scene.poly_count = 0;
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nkeynes@639 | 107 | pvr2_scene.vertex_count = 0;
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nkeynes@639 | 108 | memset( pvr2_scene.buf_to_poly_map, 0, BUF_POLY_MAP_SIZE );
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nkeynes@639 | 109 | }
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nkeynes@639 | 110 |
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nkeynes@635 | 111 | void pvr2_scene_shutdown()
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nkeynes@635 | 112 | {
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nkeynes@645 | 113 | #ifdef ENABLE_VERTEX_BUFFER
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nkeynes@635 | 114 | if( vbo_supported ) {
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nkeynes@736 | 115 | glBindBufferARB( GL_ARRAY_BUFFER_ARB, 0 );
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nkeynes@736 | 116 | glDeleteBuffersARB( 1, &pvr2_scene.vbo_id );
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nkeynes@736 | 117 | pvr2_scene.vbo_id = 0;
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nkeynes@635 | 118 | } else {
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nkeynes@645 | 119 | #endif
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nkeynes@736 | 120 | g_free( pvr2_scene.vertex_array );
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nkeynes@736 | 121 | pvr2_scene.vertex_array = NULL;
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nkeynes@645 | 122 | #ifdef ENABLE_VERTEX_BUFFER
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nkeynes@635 | 123 | }
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nkeynes@645 | 124 | #endif
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nkeynes@645 | 125 |
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nkeynes@635 | 126 | g_free( pvr2_scene.poly_array );
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nkeynes@645 | 127 | pvr2_scene.poly_array = NULL;
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nkeynes@635 | 128 | g_free( pvr2_scene.buf_to_poly_map );
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nkeynes@645 | 129 | pvr2_scene.buf_to_poly_map = NULL;
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nkeynes@635 | 130 | vbo_init = FALSE;
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nkeynes@635 | 131 | }
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nkeynes@635 | 132 |
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nkeynes@635 | 133 | void *vertex_buffer_map()
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nkeynes@635 | 134 | {
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nkeynes@687 | 135 | // Allow 8 vertexes for the background (4+4)
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nkeynes@687 | 136 | uint32_t size = (pvr2_scene.vertex_count + 8) * sizeof(struct vertex_struct);
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nkeynes@645 | 137 | #ifdef ENABLE_VERTEX_BUFFER
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nkeynes@635 | 138 | if( vbo_supported ) {
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nkeynes@690 | 139 | glGetError();
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nkeynes@736 | 140 | glBindBufferARB( GL_ARRAY_BUFFER_ARB, pvr2_scene.vbo_id );
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nkeynes@736 | 141 | if( size > pvr2_scene.vertex_array_size ) {
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nkeynes@736 | 142 | glBufferDataARB( GL_ARRAY_BUFFER_ARB, size, NULL, GL_DYNAMIC_DRAW_ARB );
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nkeynes@736 | 143 | int status = glGetError();
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nkeynes@736 | 144 | if( status != 0 ) {
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nkeynes@736 | 145 | fprintf( stderr, "Error %08X allocating vertex buffer\n", status );
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nkeynes@736 | 146 | abort();
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nkeynes@736 | 147 | }
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nkeynes@736 | 148 | pvr2_scene.vertex_array_size = size;
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nkeynes@736 | 149 | }
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nkeynes@736 | 150 | pvr2_scene.vertex_array = glMapBufferARB( GL_ARRAY_BUFFER_ARB, GL_WRITE_ONLY_ARB );
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nkeynes@736 | 151 | assert(pvr2_scene.vertex_array != NULL );
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nkeynes@635 | 152 | } else {
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nkeynes@645 | 153 | #endif
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nkeynes@736 | 154 | if( size > pvr2_scene.vertex_array_size ) {
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nkeynes@736 | 155 | pvr2_scene.vertex_array = g_realloc( pvr2_scene.vertex_array, size );
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nkeynes@736 | 156 | }
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nkeynes@645 | 157 | #ifdef ENABLE_VERTEX_BUFFER
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nkeynes@635 | 158 | }
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nkeynes@645 | 159 | #endif
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nkeynes@635 | 160 | return pvr2_scene.vertex_array;
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nkeynes@635 | 161 | }
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nkeynes@635 | 162 |
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nkeynes@635 | 163 | gboolean vertex_buffer_unmap()
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nkeynes@635 | 164 | {
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nkeynes@645 | 165 | #ifdef ENABLE_VERTEX_BUFFER
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nkeynes@635 | 166 | if( vbo_supported ) {
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nkeynes@736 | 167 | pvr2_scene.vertex_array = NULL;
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nkeynes@736 | 168 | return glUnmapBufferARB( GL_ARRAY_BUFFER_ARB );
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nkeynes@635 | 169 | } else {
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nkeynes@736 | 170 | return TRUE;
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nkeynes@635 | 171 | }
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nkeynes@645 | 172 | #else
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nkeynes@645 | 173 | return TRUE;
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nkeynes@645 | 174 | #endif
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nkeynes@635 | 175 | }
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nkeynes@635 | 176 |
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nkeynes@639 | 177 | static struct polygon_struct *scene_add_polygon( pvraddr_t poly_idx, int vertex_count,
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nkeynes@863 | 178 | shadow_mode_t is_modified )
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nkeynes@635 | 179 | {
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nkeynes@863 | 180 | int vert_mul = is_modified != SHADOW_NONE ? 2 : 1;
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nkeynes@635 | 181 |
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nkeynes@635 | 182 | if( pvr2_scene.buf_to_poly_map[poly_idx] != NULL ) {
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nkeynes@687 | 183 | if( vertex_count > pvr2_scene.buf_to_poly_map[poly_idx]->vertex_count ) {
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nkeynes@687 | 184 | pvr2_scene.vertex_count += (vertex_count - pvr2_scene.buf_to_poly_map[poly_idx]->vertex_count) * vert_mul;
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nkeynes@687 | 185 | pvr2_scene.buf_to_poly_map[poly_idx]->vertex_count = vertex_count;
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nkeynes@687 | 186 | }
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nkeynes@687 | 187 | return pvr2_scene.buf_to_poly_map[poly_idx];
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nkeynes@635 | 188 | } else {
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nkeynes@687 | 189 | struct polygon_struct *poly = &pvr2_scene.poly_array[pvr2_scene.poly_count++];
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nkeynes@687 | 190 | poly->context = &pvr2_scene.pvr2_pbuf[poly_idx];
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nkeynes@687 | 191 | poly->vertex_count = vertex_count;
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nkeynes@687 | 192 | poly->vertex_index = -1;
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nkeynes@687 | 193 | poly->mod_vertex_index = -1;
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nkeynes@687 | 194 | poly->next = NULL;
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nkeynes@687 | 195 | pvr2_scene.buf_to_poly_map[poly_idx] = poly;
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nkeynes@687 | 196 | pvr2_scene.vertex_count += (vertex_count * vert_mul);
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nkeynes@687 | 197 | return poly;
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nkeynes@635 | 198 | }
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nkeynes@635 | 199 | }
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nkeynes@635 | 200 |
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nkeynes@635 | 201 | /**
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nkeynes@635 | 202 | * Decode a single PVR2 renderable vertex (opaque/trans/punch-out, but not shadow
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nkeynes@635 | 203 | * volume)
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nkeynes@635 | 204 | * @param vert Pointer to output vertex structure
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nkeynes@635 | 205 | * @param poly1 First word of polygon context (needed to understand vertex)
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nkeynes@639 | 206 | * @param poly2 Second word of polygon context
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nkeynes@635 | 207 | * @param pvr2_data Pointer to raw pvr2 vertex data (in VRAM)
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nkeynes@635 | 208 | * @param modify_offset Offset in 32-bit words to the tex/color data. 0 for
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nkeynes@635 | 209 | * the normal vertex, half the vertex length for the modified vertex.
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nkeynes@635 | 210 | */
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nkeynes@827 | 211 | static void pvr2_decode_render_vertex( struct vertex_struct *vert, uint32_t poly1,
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nkeynes@827 | 212 | uint32_t poly2, uint32_t *pvr2_data,
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nkeynes@736 | 213 | int modify_offset )
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nkeynes@635 | 214 | {
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nkeynes@639 | 215 | gboolean force_alpha = !POLY2_ALPHA_ENABLE(poly2);
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nkeynes@635 | 216 | union pvr2_data_type {
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nkeynes@687 | 217 | uint32_t *ival;
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nkeynes@687 | 218 | float *fval;
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nkeynes@635 | 219 | } data;
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nkeynes@635 | 220 |
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nkeynes@635 | 221 | data.ival = pvr2_data;
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nkeynes@687 | 222 |
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nkeynes@635 | 223 | vert->x = *data.fval++;
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nkeynes@635 | 224 | vert->y = *data.fval++;
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nkeynes@635 | 225 |
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nkeynes@635 | 226 | float z = *data.fval++;
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nkeynes@645 | 227 | if( !isfinite(z) ) {
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nkeynes@687 | 228 | z = 0;
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nkeynes@648 | 229 | } else if( z != 0 ) {
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nkeynes@687 | 230 | z = 1/z;
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nkeynes@645 | 231 | }
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nkeynes@635 | 232 | if( z > pvr2_scene.bounds[5] ) {
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nkeynes@687 | 233 | pvr2_scene.bounds[5] = z;
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nkeynes@635 | 234 | } else if( z < pvr2_scene.bounds[4] && z != 0 ) {
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nkeynes@687 | 235 | pvr2_scene.bounds[4] = z;
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nkeynes@635 | 236 | }
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nkeynes@635 | 237 | vert->z = z;
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nkeynes@635 | 238 | data.ival += modify_offset;
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nkeynes@635 | 239 |
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nkeynes@687 | 240 |
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nkeynes@635 | 241 | if( POLY1_TEXTURED(poly1) ) {
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nkeynes@687 | 242 | if( POLY1_UV16(poly1) ) {
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nkeynes@687 | 243 | vert->u = halftofloat( *data.ival>>16 );
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nkeynes@687 | 244 | vert->v = halftofloat( *data.ival );
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nkeynes@687 | 245 | data.ival++;
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nkeynes@687 | 246 | } else {
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nkeynes@687 | 247 | vert->u = *data.fval++;
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nkeynes@687 | 248 | vert->v = *data.fval++;
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nkeynes@687 | 249 | }
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nkeynes@687 | 250 | if( POLY2_TEX_BLEND(poly2) == 1 ) {
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nkeynes@687 | 251 | force_alpha = TRUE;
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nkeynes@687 | 252 | }
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nkeynes@635 | 253 | }
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nkeynes@687 | 254 | unpack_bgra(*data.ival++, vert->rgba);
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nkeynes@687 | 255 | if( POLY1_SPECULAR(poly1) ) {
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nkeynes@687 | 256 | unpack_bgra(*data.ival++, vert->offset_rgba);
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nkeynes@687 | 257 | } else {
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nkeynes@687 | 258 | vert->offset_rgba[0] = 0.0;
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nkeynes@687 | 259 | vert->offset_rgba[1] = 0.0;
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nkeynes@687 | 260 | vert->offset_rgba[2] = 0.0;
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nkeynes@827 | 261 | vert->offset_rgba[3] = 0.0;
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nkeynes@687 | 262 | }
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nkeynes@687 | 263 |
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nkeynes@639 | 264 | if( force_alpha ) {
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nkeynes@687 | 265 | vert->rgba[3] = 1.0;
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nkeynes@635 | 266 | }
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nkeynes@635 | 267 | }
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nkeynes@635 | 268 |
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nkeynes@635 | 269 | /**
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nkeynes@687 | 270 | * Compute texture, colour, and z values for 1 or more result points by interpolating from
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nkeynes@687 | 271 | * a set of 3 input points. The result point(s) must define their x,y.
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nkeynes@635 | 272 | */
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nkeynes@827 | 273 | static void scene_compute_vertexes( struct vertex_struct *result,
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nkeynes@687 | 274 | int result_count,
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nkeynes@736 | 275 | struct vertex_struct *input,
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nkeynes@736 | 276 | gboolean is_solid_shaded )
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nkeynes@635 | 277 | {
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nkeynes@687 | 278 | int i,j;
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nkeynes@635 | 279 | float sx = input[2].x - input[1].x;
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nkeynes@635 | 280 | float sy = input[2].y - input[1].y;
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nkeynes@635 | 281 | float tx = input[0].x - input[1].x;
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nkeynes@635 | 282 | float ty = input[0].y - input[1].y;
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nkeynes@635 | 283 |
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nkeynes@635 | 284 | float detxy = ((sy) * (tx)) - ((ty) * (sx));
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nkeynes@635 | 285 | if( detxy == 0 ) {
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nkeynes@827 | 286 | // If the input points fall on a line, they don't define a usable
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nkeynes@687 | 287 | // polygon - the PVR2 takes the last input point as the result in
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nkeynes@687 | 288 | // this case.
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nkeynes@687 | 289 | for( i=0; i<result_count; i++ ) {
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nkeynes@687 | 290 | float x = result[i].x;
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nkeynes@687 | 291 | float y = result[i].y;
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nkeynes@687 | 292 | memcpy( &result[i], &input[2], sizeof(struct vertex_struct) );
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nkeynes@687 | 293 | result[i].x = x;
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nkeynes@687 | 294 | result[i].y = y;
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nkeynes@687 | 295 | }
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nkeynes@687 | 296 | return;
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nkeynes@635 | 297 | }
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nkeynes@635 | 298 | float sz = input[2].z - input[1].z;
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nkeynes@635 | 299 | float tz = input[0].z - input[1].z;
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nkeynes@635 | 300 | float su = input[2].u - input[1].u;
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nkeynes@635 | 301 | float tu = input[0].u - input[1].u;
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nkeynes@635 | 302 | float sv = input[2].v - input[1].v;
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nkeynes@635 | 303 | float tv = input[0].v - input[1].v;
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nkeynes@635 | 304 |
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nkeynes@687 | 305 | for( i=0; i<result_count; i++ ) {
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nkeynes@687 | 306 | float t = ((result[i].x - input[1].x) * sy -
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nkeynes@687 | 307 | (result[i].y - input[1].y) * sx) / detxy;
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nkeynes@687 | 308 | float s = ((result[i].y - input[1].y) * tx -
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nkeynes@687 | 309 | (result[i].x - input[1].x) * ty) / detxy;
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nkeynes@687 | 310 |
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nkeynes@687 | 311 | float rz = input[1].z + (t*tz) + (s*sz);
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nkeynes@687 | 312 | if( rz > pvr2_scene.bounds[5] ) {
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nkeynes@687 | 313 | pvr2_scene.bounds[5] = rz;
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nkeynes@687 | 314 | } else if( rz < pvr2_scene.bounds[4] ) {
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nkeynes@827 | 315 | pvr2_scene.bounds[4] = rz;
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nkeynes@687 | 316 | }
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nkeynes@687 | 317 | result[i].z = rz;
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nkeynes@687 | 318 | result[i].u = input[1].u + (t*tu) + (s*su);
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nkeynes@687 | 319 | result[i].v = input[1].v + (t*tv) + (s*sv);
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nkeynes@687 | 320 |
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nkeynes@687 | 321 | if( is_solid_shaded ) {
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nkeynes@687 | 322 | memcpy( result->rgba, input[2].rgba, sizeof(result->rgba) );
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nkeynes@687 | 323 | memcpy( result->offset_rgba, input[2].offset_rgba, sizeof(result->offset_rgba) );
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nkeynes@687 | 324 | } else {
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nkeynes@687 | 325 | float *rgba0 = input[0].rgba;
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nkeynes@687 | 326 | float *rgba1 = input[1].rgba;
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nkeynes@687 | 327 | float *rgba2 = input[2].rgba;
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nkeynes@687 | 328 | float *rgba3 = result[i].rgba;
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nkeynes@687 | 329 | for( j=0; j<8; j++ ) {
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nkeynes@687 | 330 | float tc = *rgba0++ - *rgba1;
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nkeynes@687 | 331 | float sc = *rgba2++ - *rgba1;
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nkeynes@687 | 332 | float rc = *rgba1++ + (t*tc) + (s*sc);
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nkeynes@687 | 333 | *rgba3++ = rc;
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nkeynes@687 | 334 | }
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nkeynes@687 | 335 | }
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nkeynes@635 | 336 | }
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nkeynes@653 | 337 | }
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nkeynes@635 | 338 |
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nkeynes@847 | 339 | static float scene_compute_lut_fog_vertex( float z, float fog_density, float fog_table[][2] )
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nkeynes@847 | 340 | {
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nkeynes@847 | 341 | union {
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nkeynes@847 | 342 | uint32_t i;
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nkeynes@847 | 343 | float f;
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nkeynes@847 | 344 | } v;
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nkeynes@847 | 345 | v.f = z * fog_density;
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nkeynes@847 | 346 | if( v.f < 1.0 ) v.f = 1.0;
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nkeynes@847 | 347 | else if( v.f > 255.9999 ) v.f = 255.9999;
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nkeynes@847 | 348 |
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nkeynes@847 | 349 | uint32_t index = ((v.i >> 18) & 0x0F)|((v.i>>19)&0x70);
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nkeynes@847 | 350 | return fog_table[index][0];
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nkeynes@847 | 351 | }
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nkeynes@847 | 352 |
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nkeynes@847 | 353 | /**
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nkeynes@847 | 354 | * Compute the fog coefficients for all polygons using lookup-table fog. It's
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nkeynes@847 | 355 | * a little more convenient to do this as a separate pass, since we don't have
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nkeynes@847 | 356 | * to worry about computed vertexes.
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nkeynes@847 | 357 | */
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nkeynes@847 | 358 | static void scene_compute_lut_fog( )
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nkeynes@847 | 359 | {
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nkeynes@847 | 360 | int i,j;
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nkeynes@847 | 361 |
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nkeynes@847 | 362 | float fog_density = parse_fog_density(MMIO_READ( PVR2, RENDER_FOGCOEFF ));
|
nkeynes@847 | 363 | float fog_table[128][2];
|
nkeynes@847 | 364 |
|
nkeynes@847 | 365 | /* Parse fog table out into floating-point format */
|
nkeynes@847 | 366 | for( i=0; i<128; i++ ) {
|
nkeynes@847 | 367 | uint32_t ent = MMIO_READ( PVR2, RENDER_FOGTABLE + (i<<2) );
|
nkeynes@847 | 368 | fog_table[i][0] = ((float)(((ent&0x0000FF00)>>8) + 1)) / 256.0;
|
nkeynes@847 | 369 | fog_table[i][1] = ((float)((ent&0x000000FF) + 1)) / 256.0;
|
nkeynes@847 | 370 | }
|
nkeynes@847 | 371 |
|
nkeynes@847 | 372 |
|
nkeynes@847 | 373 | for( i=0; i<pvr2_scene.poly_count; i++ ) {
|
nkeynes@847 | 374 | int mode = POLY2_FOG_MODE(pvr2_scene.poly_array[i].context[1]);
|
nkeynes@1132 | 375 | uint32_t index = pvr2_scene.poly_array[i].vertex_index;
|
nkeynes@847 | 376 | if( mode == PVR2_POLY_FOG_LOOKUP ) {
|
nkeynes@1132 | 377 | for( j=0; j<pvr2_scene.poly_array[i].vertex_count; j++ ) {
|
nkeynes@847 | 378 | pvr2_scene.vertex_array[index+j].offset_rgba[3] =
|
nkeynes@847 | 379 | scene_compute_lut_fog_vertex( pvr2_scene.vertex_array[index+j].z, fog_density, fog_table );
|
nkeynes@847 | 380 | }
|
nkeynes@847 | 381 | } else if( mode == PVR2_POLY_FOG_LOOKUP2 ) {
|
nkeynes@1132 | 382 | for( j=0; j<pvr2_scene.poly_array[i].vertex_count; j++ ) {
|
nkeynes@847 | 383 | pvr2_scene.vertex_array[index+j].rgba[0] = pvr2_scene.fog_lut_colour[0];
|
nkeynes@847 | 384 | pvr2_scene.vertex_array[index+j].rgba[1] = pvr2_scene.fog_lut_colour[1];
|
nkeynes@847 | 385 | pvr2_scene.vertex_array[index+j].rgba[2] = pvr2_scene.fog_lut_colour[2];
|
nkeynes@847 | 386 | pvr2_scene.vertex_array[index+j].rgba[3] =
|
nkeynes@847 | 387 | scene_compute_lut_fog_vertex( pvr2_scene.vertex_array[index+j].z, fog_density, fog_table );
|
nkeynes@1132 | 388 | pvr2_scene.vertex_array[index+j].offset_rgba[3] = 0;
|
nkeynes@1132 | 389 | }
|
nkeynes@1132 | 390 | } else if( mode == PVR2_POLY_FOG_DISABLED ) {
|
nkeynes@1132 | 391 | for( j=0; j<pvr2_scene.poly_array[i].vertex_count; j++ ) {
|
nkeynes@1132 | 392 | pvr2_scene.vertex_array[index+j].offset_rgba[3] = 0;
|
nkeynes@847 | 393 | }
|
nkeynes@847 | 394 | }
|
nkeynes@635 | 395 | }
|
nkeynes@847 | 396 | }
|
nkeynes@635 | 397 |
|
nkeynes@863 | 398 | static void scene_add_cheap_shadow_vertexes( struct vertex_struct *src, struct vertex_struct *dest, int count )
|
nkeynes@863 | 399 | {
|
nkeynes@863 | 400 | unsigned int i, j;
|
nkeynes@863 | 401 |
|
nkeynes@863 | 402 | for( i=0; i<count; i++ ) {
|
nkeynes@863 | 403 | dest->x = src->x;
|
nkeynes@863 | 404 | dest->y = src->y;
|
nkeynes@863 | 405 | dest->z = src->z;
|
nkeynes@863 | 406 | dest->u = src->u;
|
nkeynes@863 | 407 | dest->v = src->v;
|
nkeynes@863 | 408 | dest->rgba[0] = src->rgba[0] * scene_shadow_intensity;
|
nkeynes@863 | 409 | dest->rgba[1] = src->rgba[1] * scene_shadow_intensity;
|
nkeynes@863 | 410 | dest->rgba[2] = src->rgba[2] * scene_shadow_intensity;
|
nkeynes@863 | 411 | dest->rgba[3] = src->rgba[3] * scene_shadow_intensity;
|
nkeynes@863 | 412 | dest->offset_rgba[0] = src->offset_rgba[0] * scene_shadow_intensity;
|
nkeynes@863 | 413 | dest->offset_rgba[1] = src->offset_rgba[1] * scene_shadow_intensity;
|
nkeynes@863 | 414 | dest->offset_rgba[2] = src->offset_rgba[2] * scene_shadow_intensity;
|
nkeynes@863 | 415 | dest->offset_rgba[3] = src->offset_rgba[3];
|
nkeynes@863 | 416 | dest++;
|
nkeynes@863 | 417 | src++;
|
nkeynes@863 | 418 | }
|
nkeynes@635 | 419 | }
|
nkeynes@635 | 420 |
|
nkeynes@639 | 421 | static void scene_add_vertexes( pvraddr_t poly_idx, int vertex_length,
|
nkeynes@863 | 422 | shadow_mode_t is_modified )
|
nkeynes@635 | 423 | {
|
nkeynes@635 | 424 | struct polygon_struct *poly = pvr2_scene.buf_to_poly_map[poly_idx];
|
nkeynes@635 | 425 | uint32_t *ptr = &pvr2_scene.pvr2_pbuf[poly_idx];
|
nkeynes@635 | 426 | uint32_t *context = ptr;
|
nkeynes@635 | 427 | unsigned int i;
|
nkeynes@635 | 428 |
|
nkeynes@635 | 429 | if( poly->vertex_index == -1 ) {
|
nkeynes@863 | 430 | ptr += (is_modified == SHADOW_FULL ? 5 : 3 );
|
nkeynes@687 | 431 | poly->vertex_index = pvr2_scene.vertex_index;
|
nkeynes@687 | 432 |
|
nkeynes@687 | 433 | assert( poly != NULL );
|
nkeynes@687 | 434 | assert( pvr2_scene.vertex_index + poly->vertex_count <= pvr2_scene.vertex_count );
|
nkeynes@687 | 435 | for( i=0; i<poly->vertex_count; i++ ) {
|
nkeynes@687 | 436 | pvr2_decode_render_vertex( &pvr2_scene.vertex_array[pvr2_scene.vertex_index++], context[0], context[1], ptr, 0 );
|
nkeynes@687 | 437 | ptr += vertex_length;
|
nkeynes@687 | 438 | }
|
nkeynes@687 | 439 | if( is_modified ) {
|
nkeynes@687 | 440 | assert( pvr2_scene.vertex_index + poly->vertex_count <= pvr2_scene.vertex_count );
|
nkeynes@687 | 441 | poly->mod_vertex_index = pvr2_scene.vertex_index;
|
nkeynes@863 | 442 | if( is_modified == SHADOW_FULL ) {
|
nkeynes@863 | 443 | int mod_offset = (vertex_length - 3)>>1;
|
nkeynes@863 | 444 | ptr = &pvr2_scene.pvr2_pbuf[poly_idx] + 5;
|
nkeynes@863 | 445 | for( i=0; i<poly->vertex_count; i++ ) {
|
nkeynes@863 | 446 | pvr2_decode_render_vertex( &pvr2_scene.vertex_array[pvr2_scene.vertex_index++], context[0], context[3], ptr, mod_offset );
|
nkeynes@863 | 447 | ptr += vertex_length;
|
nkeynes@863 | 448 | }
|
nkeynes@863 | 449 | } else {
|
nkeynes@863 | 450 | scene_add_cheap_shadow_vertexes( &pvr2_scene.vertex_array[poly->vertex_index],
|
nkeynes@863 | 451 | &pvr2_scene.vertex_array[poly->mod_vertex_index], poly->vertex_count );
|
nkeynes@863 | 452 | pvr2_scene.vertex_index += poly->vertex_count;
|
nkeynes@687 | 453 | }
|
nkeynes@687 | 454 | }
|
nkeynes@635 | 455 | }
|
nkeynes@635 | 456 | }
|
nkeynes@635 | 457 |
|
nkeynes@827 | 458 | static void scene_add_quad_vertexes( pvraddr_t poly_idx, int vertex_length,
|
nkeynes@863 | 459 | shadow_mode_t is_modified )
|
nkeynes@635 | 460 | {
|
nkeynes@635 | 461 | struct polygon_struct *poly = pvr2_scene.buf_to_poly_map[poly_idx];
|
nkeynes@635 | 462 | uint32_t *ptr = &pvr2_scene.pvr2_pbuf[poly_idx];
|
nkeynes@635 | 463 | uint32_t *context = ptr;
|
nkeynes@635 | 464 | unsigned int i;
|
nkeynes@635 | 465 |
|
nkeynes@635 | 466 | if( poly->vertex_index == -1 ) {
|
nkeynes@827 | 467 | // Construct it locally and copy to the vertex buffer, as the VBO is
|
nkeynes@736 | 468 | // allowed to be horribly slow for reads (ie it could be direct-mapped
|
nkeynes@736 | 469 | // vram).
|
nkeynes@736 | 470 | struct vertex_struct quad[4];
|
nkeynes@736 | 471 |
|
nkeynes@736 | 472 | assert( poly != NULL );
|
nkeynes@736 | 473 | assert( pvr2_scene.vertex_index + poly->vertex_count <= pvr2_scene.vertex_count );
|
nkeynes@863 | 474 | ptr += (is_modified == SHADOW_FULL ? 5 : 3 );
|
nkeynes@736 | 475 | poly->vertex_index = pvr2_scene.vertex_index;
|
nkeynes@736 | 476 | for( i=0; i<4; i++ ) {
|
nkeynes@736 | 477 | pvr2_decode_render_vertex( &quad[i], context[0], context[1], ptr, 0 );
|
nkeynes@736 | 478 | ptr += vertex_length;
|
nkeynes@736 | 479 | }
|
nkeynes@687 | 480 | scene_compute_vertexes( &quad[3], 1, &quad[0], !POLY1_GOURAUD_SHADED(context[0]) );
|
nkeynes@736 | 481 | // Swap last two vertexes (quad arrangement => tri strip arrangement)
|
nkeynes@736 | 482 | memcpy( &pvr2_scene.vertex_array[pvr2_scene.vertex_index], quad, sizeof(struct vertex_struct)*2 );
|
nkeynes@736 | 483 | memcpy( &pvr2_scene.vertex_array[pvr2_scene.vertex_index+2], &quad[3], sizeof(struct vertex_struct) );
|
nkeynes@736 | 484 | memcpy( &pvr2_scene.vertex_array[pvr2_scene.vertex_index+3], &quad[2], sizeof(struct vertex_struct) );
|
nkeynes@736 | 485 | pvr2_scene.vertex_index += 4;
|
nkeynes@736 | 486 |
|
nkeynes@736 | 487 | if( is_modified ) {
|
nkeynes@736 | 488 | assert( pvr2_scene.vertex_index + poly->vertex_count <= pvr2_scene.vertex_count );
|
nkeynes@736 | 489 | poly->mod_vertex_index = pvr2_scene.vertex_index;
|
nkeynes@863 | 490 | if( is_modified == SHADOW_FULL ) {
|
nkeynes@863 | 491 | int mod_offset = (vertex_length - 3)>>1;
|
nkeynes@863 | 492 | ptr = &pvr2_scene.pvr2_pbuf[poly_idx] + 5;
|
nkeynes@863 | 493 | for( i=0; i<4; i++ ) {
|
nkeynes@863 | 494 | pvr2_decode_render_vertex( &quad[4], context[0], context[3], ptr, mod_offset );
|
nkeynes@863 | 495 | ptr += vertex_length;
|
nkeynes@863 | 496 | }
|
nkeynes@863 | 497 | scene_compute_vertexes( &quad[3], 1, &quad[0], !POLY1_GOURAUD_SHADED(context[0]) );
|
nkeynes@863 | 498 | memcpy( &pvr2_scene.vertex_array[pvr2_scene.vertex_index], quad, sizeof(struct vertex_struct)*2 );
|
nkeynes@863 | 499 | memcpy( &pvr2_scene.vertex_array[pvr2_scene.vertex_index+2], &quad[3], sizeof(struct vertex_struct) );
|
nkeynes@863 | 500 | memcpy( &pvr2_scene.vertex_array[pvr2_scene.vertex_index+3], &quad[2], sizeof(struct vertex_struct) );
|
nkeynes@863 | 501 | } else {
|
nkeynes@863 | 502 | scene_add_cheap_shadow_vertexes( &pvr2_scene.vertex_array[poly->vertex_index],
|
nkeynes@863 | 503 | &pvr2_scene.vertex_array[poly->mod_vertex_index], poly->vertex_count );
|
nkeynes@863 | 504 | pvr2_scene.vertex_index += poly->vertex_count;
|
nkeynes@736 | 505 | }
|
nkeynes@736 | 506 | pvr2_scene.vertex_index += 4;
|
nkeynes@736 | 507 | }
|
nkeynes@635 | 508 | }
|
nkeynes@635 | 509 | }
|
nkeynes@635 | 510 |
|
nkeynes@639 | 511 | static void scene_extract_polygons( pvraddr_t tile_entry )
|
nkeynes@635 | 512 | {
|
nkeynes@934 | 513 | uint32_t *tile_list = (uint32_t *)(pvr2_main_ram+tile_entry);
|
nkeynes@635 | 514 | do {
|
nkeynes@687 | 515 | uint32_t entry = *tile_list++;
|
nkeynes@687 | 516 | if( entry >> 28 == 0x0F ) {
|
nkeynes@687 | 517 | break;
|
nkeynes@687 | 518 | } else if( entry >> 28 == 0x0E ) {
|
nkeynes@934 | 519 | tile_list = (uint32_t *)(pvr2_main_ram + (entry&0x007FFFFF));
|
nkeynes@687 | 520 | } else {
|
nkeynes@687 | 521 | pvraddr_t polyaddr = entry&0x000FFFFF;
|
nkeynes@863 | 522 | shadow_mode_t is_modified = (entry & 0x01000000) ? pvr2_scene.shadow_mode : SHADOW_NONE;
|
nkeynes@687 | 523 | int vertex_length = (entry >> 21) & 0x07;
|
nkeynes@687 | 524 | int context_length = 3;
|
nkeynes@863 | 525 | if( is_modified == SHADOW_FULL ) {
|
nkeynes@687 | 526 | context_length = 5;
|
nkeynes@687 | 527 | vertex_length <<= 1 ;
|
nkeynes@687 | 528 | }
|
nkeynes@687 | 529 | vertex_length += 3;
|
nkeynes@687 | 530 |
|
nkeynes@687 | 531 | if( (entry & 0xE0000000) == 0x80000000 ) {
|
nkeynes@687 | 532 | /* Triangle(s) */
|
nkeynes@687 | 533 | int strip_count = ((entry >> 25) & 0x0F)+1;
|
nkeynes@687 | 534 | int polygon_length = 3 * vertex_length + context_length;
|
nkeynes@687 | 535 | int i;
|
nkeynes@687 | 536 | struct polygon_struct *last_poly = NULL;
|
nkeynes@687 | 537 | for( i=0; i<strip_count; i++ ) {
|
nkeynes@687 | 538 | struct polygon_struct *poly = scene_add_polygon( polyaddr, 3, is_modified );
|
nkeynes@687 | 539 | polyaddr += polygon_length;
|
nkeynes@687 | 540 | if( last_poly != NULL && last_poly->next == NULL ) {
|
nkeynes@687 | 541 | last_poly->next = poly;
|
nkeynes@687 | 542 | }
|
nkeynes@687 | 543 | last_poly = poly;
|
nkeynes@687 | 544 | }
|
nkeynes@687 | 545 | } else if( (entry & 0xE0000000) == 0xA0000000 ) {
|
nkeynes@687 | 546 | /* Sprite(s) */
|
nkeynes@687 | 547 | int strip_count = ((entry >> 25) & 0x0F)+1;
|
nkeynes@687 | 548 | int polygon_length = 4 * vertex_length + context_length;
|
nkeynes@687 | 549 | int i;
|
nkeynes@687 | 550 | struct polygon_struct *last_poly = NULL;
|
nkeynes@687 | 551 | for( i=0; i<strip_count; i++ ) {
|
nkeynes@687 | 552 | struct polygon_struct *poly = scene_add_polygon( polyaddr, 4, is_modified );
|
nkeynes@687 | 553 | polyaddr += polygon_length;
|
nkeynes@687 | 554 | if( last_poly != NULL && last_poly->next == NULL ) {
|
nkeynes@687 | 555 | last_poly->next = poly;
|
nkeynes@687 | 556 | }
|
nkeynes@687 | 557 | last_poly = poly;
|
nkeynes@687 | 558 | }
|
nkeynes@687 | 559 | } else {
|
nkeynes@687 | 560 | /* Polygon */
|
nkeynes@687 | 561 | int i, last = -1;
|
nkeynes@687 | 562 | for( i=5; i>=0; i-- ) {
|
nkeynes@687 | 563 | if( entry & (0x40000000>>i) ) {
|
nkeynes@687 | 564 | last = i;
|
nkeynes@687 | 565 | break;
|
nkeynes@687 | 566 | }
|
nkeynes@687 | 567 | }
|
nkeynes@687 | 568 | if( last != -1 ) {
|
nkeynes@687 | 569 | scene_add_polygon( polyaddr, last+3, is_modified );
|
nkeynes@687 | 570 | }
|
nkeynes@687 | 571 | }
|
nkeynes@687 | 572 | }
|
nkeynes@635 | 573 | } while( 1 );
|
nkeynes@635 | 574 | }
|
nkeynes@635 | 575 |
|
nkeynes@639 | 576 | static void scene_extract_vertexes( pvraddr_t tile_entry )
|
nkeynes@635 | 577 | {
|
nkeynes@934 | 578 | uint32_t *tile_list = (uint32_t *)(pvr2_main_ram+tile_entry);
|
nkeynes@635 | 579 | do {
|
nkeynes@736 | 580 | uint32_t entry = *tile_list++;
|
nkeynes@736 | 581 | if( entry >> 28 == 0x0F ) {
|
nkeynes@736 | 582 | break;
|
nkeynes@736 | 583 | } else if( entry >> 28 == 0x0E ) {
|
nkeynes@934 | 584 | tile_list = (uint32_t *)(pvr2_main_ram + (entry&0x007FFFFF));
|
nkeynes@736 | 585 | } else {
|
nkeynes@736 | 586 | pvraddr_t polyaddr = entry&0x000FFFFF;
|
nkeynes@863 | 587 | shadow_mode_t is_modified = (entry & 0x01000000) ? pvr2_scene.shadow_mode : SHADOW_NONE;
|
nkeynes@736 | 588 | int vertex_length = (entry >> 21) & 0x07;
|
nkeynes@736 | 589 | int context_length = 3;
|
nkeynes@863 | 590 | if( is_modified == SHADOW_FULL ) {
|
nkeynes@736 | 591 | context_length = 5;
|
nkeynes@736 | 592 | vertex_length <<=1 ;
|
nkeynes@736 | 593 | }
|
nkeynes@736 | 594 | vertex_length += 3;
|
nkeynes@736 | 595 |
|
nkeynes@736 | 596 | if( (entry & 0xE0000000) == 0x80000000 ) {
|
nkeynes@736 | 597 | /* Triangle(s) */
|
nkeynes@736 | 598 | int strip_count = ((entry >> 25) & 0x0F)+1;
|
nkeynes@736 | 599 | int polygon_length = 3 * vertex_length + context_length;
|
nkeynes@736 | 600 | int i;
|
nkeynes@736 | 601 | for( i=0; i<strip_count; i++ ) {
|
nkeynes@736 | 602 | scene_add_vertexes( polyaddr, vertex_length, is_modified );
|
nkeynes@736 | 603 | polyaddr += polygon_length;
|
nkeynes@736 | 604 | }
|
nkeynes@736 | 605 | } else if( (entry & 0xE0000000) == 0xA0000000 ) {
|
nkeynes@736 | 606 | /* Sprite(s) */
|
nkeynes@736 | 607 | int strip_count = ((entry >> 25) & 0x0F)+1;
|
nkeynes@736 | 608 | int polygon_length = 4 * vertex_length + context_length;
|
nkeynes@736 | 609 | int i;
|
nkeynes@736 | 610 | for( i=0; i<strip_count; i++ ) {
|
nkeynes@736 | 611 | scene_add_quad_vertexes( polyaddr, vertex_length, is_modified );
|
nkeynes@736 | 612 | polyaddr += polygon_length;
|
nkeynes@736 | 613 | }
|
nkeynes@736 | 614 | } else {
|
nkeynes@736 | 615 | /* Polygon */
|
nkeynes@736 | 616 | int i, last = -1;
|
nkeynes@736 | 617 | for( i=5; i>=0; i-- ) {
|
nkeynes@736 | 618 | if( entry & (0x40000000>>i) ) {
|
nkeynes@736 | 619 | last = i;
|
nkeynes@736 | 620 | break;
|
nkeynes@736 | 621 | }
|
nkeynes@736 | 622 | }
|
nkeynes@736 | 623 | if( last != -1 ) {
|
nkeynes@736 | 624 | scene_add_vertexes( polyaddr, vertex_length, is_modified );
|
nkeynes@736 | 625 | }
|
nkeynes@736 | 626 | }
|
nkeynes@736 | 627 | }
|
nkeynes@827 | 628 | } while( 1 );
|
nkeynes@635 | 629 | }
|
nkeynes@635 | 630 |
|
nkeynes@687 | 631 | static void scene_extract_background( void )
|
nkeynes@687 | 632 | {
|
nkeynes@687 | 633 | uint32_t bgplane = MMIO_READ(PVR2, RENDER_BGPLANE);
|
nkeynes@687 | 634 | int vertex_length = (bgplane >> 24) & 0x07;
|
nkeynes@687 | 635 | int context_length = 3, i;
|
nkeynes@863 | 636 | shadow_mode_t is_modified = (bgplane & 0x08000000) ? pvr2_scene.shadow_mode : SHADOW_NONE;
|
nkeynes@687 | 637 |
|
nkeynes@687 | 638 | struct polygon_struct *poly = &pvr2_scene.poly_array[pvr2_scene.poly_count++];
|
nkeynes@687 | 639 | uint32_t *context = &pvr2_scene.pvr2_pbuf[(bgplane & 0x00FFFFFF)>>3];
|
nkeynes@687 | 640 | poly->context = context;
|
nkeynes@687 | 641 | poly->vertex_count = 4;
|
nkeynes@687 | 642 | poly->vertex_index = pvr2_scene.vertex_count;
|
nkeynes@863 | 643 | if( is_modified == SHADOW_FULL ) {
|
nkeynes@687 | 644 | context_length = 5;
|
nkeynes@687 | 645 | vertex_length <<= 1;
|
nkeynes@863 | 646 | }
|
nkeynes@863 | 647 | if( is_modified != SHADOW_NONE ) {
|
nkeynes@687 | 648 | poly->mod_vertex_index = pvr2_scene.vertex_count + 4;
|
nkeynes@827 | 649 | pvr2_scene.vertex_count += 8;
|
nkeynes@687 | 650 | } else {
|
nkeynes@687 | 651 | poly->mod_vertex_index = -1;
|
nkeynes@687 | 652 | pvr2_scene.vertex_count += 4;
|
nkeynes@687 | 653 | }
|
nkeynes@687 | 654 | vertex_length += 3;
|
nkeynes@687 | 655 | context_length += (bgplane & 0x07) * vertex_length;
|
nkeynes@687 | 656 |
|
nkeynes@687 | 657 | poly->next = NULL;
|
nkeynes@687 | 658 | pvr2_scene.bkgnd_poly = poly;
|
nkeynes@736 | 659 |
|
nkeynes@687 | 660 | struct vertex_struct base_vertexes[3];
|
nkeynes@827 | 661 | uint32_t *ptr = context + context_length;
|
nkeynes@687 | 662 | for( i=0; i<3; i++ ) {
|
nkeynes@687 | 663 | pvr2_decode_render_vertex( &base_vertexes[i], context[0], context[1],
|
nkeynes@736 | 664 | ptr, 0 );
|
nkeynes@687 | 665 | ptr += vertex_length;
|
nkeynes@687 | 666 | }
|
nkeynes@687 | 667 | struct vertex_struct *result_vertexes = &pvr2_scene.vertex_array[poly->vertex_index];
|
nkeynes@687 | 668 | result_vertexes[0].x = result_vertexes[0].y = 0;
|
nkeynes@687 | 669 | result_vertexes[1].x = result_vertexes[3].x = pvr2_scene.buffer_width;
|
nkeynes@687 | 670 | result_vertexes[1].y = result_vertexes[2].x = 0;
|
nkeynes@687 | 671 | result_vertexes[2].y = result_vertexes[3].y = pvr2_scene.buffer_height;
|
nkeynes@687 | 672 | scene_compute_vertexes( result_vertexes, 4, base_vertexes, !POLY1_GOURAUD_SHADED(context[0]) );
|
nkeynes@687 | 673 |
|
nkeynes@863 | 674 | if( is_modified == SHADOW_FULL ) {
|
nkeynes@687 | 675 | int mod_offset = (vertex_length - 3)>>1;
|
nkeynes@687 | 676 | ptr = context + context_length;
|
nkeynes@687 | 677 | for( i=0; i<3; i++ ) {
|
nkeynes@687 | 678 | pvr2_decode_render_vertex( &base_vertexes[i], context[0], context[3],
|
nkeynes@736 | 679 | ptr, mod_offset );
|
nkeynes@687 | 680 | ptr += vertex_length;
|
nkeynes@687 | 681 | }
|
nkeynes@687 | 682 | result_vertexes = &pvr2_scene.vertex_array[poly->mod_vertex_index];
|
nkeynes@687 | 683 | result_vertexes[0].x = result_vertexes[0].y = 0;
|
nkeynes@687 | 684 | result_vertexes[1].x = result_vertexes[3].x = pvr2_scene.buffer_width;
|
nkeynes@687 | 685 | result_vertexes[1].y = result_vertexes[2].x = 0;
|
nkeynes@687 | 686 | result_vertexes[2].y = result_vertexes[3].y = pvr2_scene.buffer_height;
|
nkeynes@687 | 687 | scene_compute_vertexes( result_vertexes, 4, base_vertexes, !POLY1_GOURAUD_SHADED(context[0]) );
|
nkeynes@863 | 688 | } else if( is_modified == SHADOW_CHEAP ) {
|
nkeynes@863 | 689 | scene_add_cheap_shadow_vertexes( &pvr2_scene.vertex_array[poly->vertex_index],
|
nkeynes@863 | 690 | &pvr2_scene.vertex_array[poly->mod_vertex_index], poly->vertex_count );
|
nkeynes@863 | 691 | pvr2_scene.vertex_index += poly->vertex_count;
|
nkeynes@687 | 692 | }
|
nkeynes@736 | 693 |
|
nkeynes@687 | 694 | }
|
nkeynes@687 | 695 |
|
nkeynes@687 | 696 |
|
nkeynes@639 | 697 | uint32_t pvr2_scene_buffer_width()
|
nkeynes@639 | 698 | {
|
nkeynes@639 | 699 | return pvr2_scene.buffer_width;
|
nkeynes@639 | 700 | }
|
nkeynes@639 | 701 |
|
nkeynes@639 | 702 | uint32_t pvr2_scene_buffer_height()
|
nkeynes@639 | 703 | {
|
nkeynes@639 | 704 | return pvr2_scene.buffer_height;
|
nkeynes@639 | 705 | }
|
nkeynes@639 | 706 |
|
nkeynes@635 | 707 | /**
|
nkeynes@635 | 708 | * Extract the current scene into the rendering structures. We run two passes
|
nkeynes@827 | 709 | * - first pass extracts the polygons into pvr2_scene.poly_array (finding vertex counts),
|
nkeynes@635 | 710 | * second pass extracts the vertex data into the VBO/vertex array.
|
nkeynes@635 | 711 | *
|
nkeynes@827 | 712 | * Difficult to do in single pass as we don't generally know the size of a
|
nkeynes@635 | 713 | * polygon for certain until we've seen all tiles containing it. It also means we
|
nkeynes@635 | 714 | * can count the vertexes and allocate the appropriate size VBO.
|
nkeynes@635 | 715 | *
|
nkeynes@635 | 716 | * FIXME: accesses into VRAM need to be bounds-checked properly
|
nkeynes@635 | 717 | */
|
nkeynes@635 | 718 | void pvr2_scene_read( void )
|
nkeynes@635 | 719 | {
|
nkeynes@635 | 720 | pvr2_scene_init();
|
nkeynes@639 | 721 | pvr2_scene_reset();
|
nkeynes@635 | 722 |
|
nkeynes@635 | 723 | pvr2_scene.bounds[0] = MMIO_READ( PVR2, RENDER_HCLIP ) & 0x03FF;
|
nkeynes@635 | 724 | pvr2_scene.bounds[1] = ((MMIO_READ( PVR2, RENDER_HCLIP ) >> 16) & 0x03FF) + 1;
|
nkeynes@635 | 725 | pvr2_scene.bounds[2] = MMIO_READ( PVR2, RENDER_VCLIP ) & 0x03FF;
|
nkeynes@635 | 726 | pvr2_scene.bounds[3] = ((MMIO_READ( PVR2, RENDER_VCLIP ) >> 16) & 0x03FF) + 1;
|
nkeynes@635 | 727 | pvr2_scene.bounds[4] = pvr2_scene.bounds[5] = MMIO_READF( PVR2, RENDER_FARCLIP );
|
nkeynes@635 | 728 |
|
nkeynes@827 | 729 | uint32_t scaler = MMIO_READ( PVR2, RENDER_SCALER );
|
nkeynes@827 | 730 | if( scaler & SCALER_HSCALE ) {
|
nkeynes@827 | 731 | /* If the horizontal scaler is in use, we're (in principle) supposed to
|
nkeynes@827 | 732 | * divide everything by 2. However in the interests of display quality,
|
nkeynes@827 | 733 | * instead we want to render to the unscaled resolution and downsample
|
nkeynes@827 | 734 | * only if/when required.
|
nkeynes@827 | 735 | */
|
nkeynes@827 | 736 | pvr2_scene.bounds[1] *= 2;
|
nkeynes@827 | 737 | }
|
nkeynes@847 | 738 |
|
nkeynes@847 | 739 | uint32_t fog_col = MMIO_READ( PVR2, RENDER_FOGTBLCOL );
|
nkeynes@847 | 740 | unpack_bgra( fog_col, pvr2_scene.fog_lut_colour );
|
nkeynes@847 | 741 | fog_col = MMIO_READ( PVR2, RENDER_FOGVRTCOL );
|
nkeynes@847 | 742 | unpack_bgra( fog_col, pvr2_scene.fog_vert_colour );
|
nkeynes@847 | 743 |
|
nkeynes@934 | 744 | uint32_t *tilebuffer = (uint32_t *)(pvr2_main_ram + MMIO_READ( PVR2, RENDER_TILEBASE ));
|
nkeynes@635 | 745 | uint32_t *segment = tilebuffer;
|
nkeynes@863 | 746 | uint32_t shadow = MMIO_READ(PVR2,RENDER_SHADOW);
|
nkeynes@635 | 747 | pvr2_scene.segment_list = (struct tile_segment *)tilebuffer;
|
nkeynes@934 | 748 | pvr2_scene.pvr2_pbuf = (uint32_t *)(pvr2_main_ram + MMIO_READ(PVR2,RENDER_POLYBASE));
|
nkeynes@863 | 749 | pvr2_scene.shadow_mode = shadow & 0x100 ? SHADOW_CHEAP : SHADOW_FULL;
|
nkeynes@863 | 750 | scene_shadow_intensity = U8TOFLOAT(shadow&0xFF);
|
nkeynes@687 | 751 |
|
nkeynes@635 | 752 | int max_tile_x = 0;
|
nkeynes@635 | 753 | int max_tile_y = 0;
|
nkeynes@635 | 754 | int obj_config = MMIO_READ( PVR2, RENDER_OBJCFG );
|
nkeynes@635 | 755 | int isp_config = MMIO_READ( PVR2, RENDER_ISPCFG );
|
nkeynes@635 | 756 |
|
nkeynes@635 | 757 | if( (obj_config & 0x00200000) == 0 ) {
|
nkeynes@687 | 758 | if( isp_config & 1 ) {
|
nkeynes@687 | 759 | pvr2_scene.sort_mode = SORT_NEVER;
|
nkeynes@687 | 760 | } else {
|
nkeynes@687 | 761 | pvr2_scene.sort_mode = SORT_ALWAYS;
|
nkeynes@687 | 762 | }
|
nkeynes@635 | 763 | } else {
|
nkeynes@687 | 764 | pvr2_scene.sort_mode = SORT_TILEFLAG;
|
nkeynes@635 | 765 | }
|
nkeynes@635 | 766 |
|
nkeynes@827 | 767 | // Pass 1: Extract polygon list
|
nkeynes@635 | 768 | uint32_t control;
|
nkeynes@635 | 769 | int i;
|
nkeynes@635 | 770 | do {
|
nkeynes@687 | 771 | control = *segment++;
|
nkeynes@687 | 772 | int tile_x = SEGMENT_X(control);
|
nkeynes@687 | 773 | int tile_y = SEGMENT_Y(control);
|
nkeynes@687 | 774 | if( tile_x > max_tile_x ) {
|
nkeynes@687 | 775 | max_tile_x = tile_x;
|
nkeynes@827 | 776 | }
|
nkeynes@687 | 777 | if( tile_y > max_tile_y ) {
|
nkeynes@687 | 778 | max_tile_y = tile_y;
|
nkeynes@687 | 779 | }
|
nkeynes@687 | 780 | for( i=0; i<5; i++ ) {
|
nkeynes@687 | 781 | if( (*segment & NO_POINTER) == 0 ) {
|
nkeynes@687 | 782 | scene_extract_polygons( *segment );
|
nkeynes@687 | 783 | }
|
nkeynes@687 | 784 | segment++;
|
nkeynes@687 | 785 | }
|
nkeynes@635 | 786 | } while( (control & SEGMENT_END) == 0 );
|
nkeynes@635 | 787 |
|
nkeynes@635 | 788 | pvr2_scene.buffer_width = (max_tile_x+1)<<5;
|
nkeynes@635 | 789 | pvr2_scene.buffer_height = (max_tile_y+1)<<5;
|
nkeynes@635 | 790 |
|
nkeynes@687 | 791 | // Pass 2: Extract vertex data
|
nkeynes@687 | 792 | vertex_buffer_map();
|
nkeynes@687 | 793 | pvr2_scene.vertex_index = 0;
|
nkeynes@687 | 794 | segment = tilebuffer;
|
nkeynes@687 | 795 | do {
|
nkeynes@687 | 796 | control = *segment++;
|
nkeynes@687 | 797 | for( i=0; i<5; i++ ) {
|
nkeynes@687 | 798 | if( (*segment & NO_POINTER) == 0 ) {
|
nkeynes@687 | 799 | scene_extract_vertexes( *segment );
|
nkeynes@687 | 800 | }
|
nkeynes@687 | 801 | segment++;
|
nkeynes@687 | 802 | }
|
nkeynes@687 | 803 | } while( (control & SEGMENT_END) == 0 );
|
nkeynes@736 | 804 |
|
nkeynes@687 | 805 | scene_extract_background();
|
nkeynes@847 | 806 | scene_compute_lut_fog();
|
nkeynes@736 | 807 |
|
nkeynes@687 | 808 | vertex_buffer_unmap();
|
nkeynes@635 | 809 | }
|
nkeynes@645 | 810 |
|
nkeynes@645 | 811 | /**
|
nkeynes@645 | 812 | * Dump the current scene to file in a (mostly) human readable form
|
nkeynes@645 | 813 | */
|
nkeynes@645 | 814 | void pvr2_scene_dump( FILE *f )
|
nkeynes@645 | 815 | {
|
nkeynes@645 | 816 | int i,j;
|
nkeynes@645 | 817 |
|
nkeynes@645 | 818 | fprintf( f, "Polygons: %d\n", pvr2_scene.poly_count );
|
nkeynes@645 | 819 | for( i=0; i<pvr2_scene.poly_count; i++ ) {
|
nkeynes@736 | 820 | struct polygon_struct *poly = &pvr2_scene.poly_array[i];
|
nkeynes@1074 | 821 | fprintf( f, " %08X ", (uint32_t)(((unsigned char *)poly->context) - pvr2_main_ram) );
|
nkeynes@736 | 822 | switch( poly->vertex_count ) {
|
nkeynes@736 | 823 | case 3: fprintf( f, "Tri " ); break;
|
nkeynes@736 | 824 | case 4: fprintf( f, "Quad " ); break;
|
nkeynes@736 | 825 | default: fprintf( f,"%d-Strip ", poly->vertex_count-2 ); break;
|
nkeynes@736 | 826 | }
|
nkeynes@736 | 827 | fprintf( f, "%08X %08X %08X ", poly->context[0], poly->context[1], poly->context[2] );
|
nkeynes@736 | 828 | if( poly->mod_vertex_index != -1 ) {
|
nkeynes@736 | 829 | fprintf( f, "%08X %08X\n", poly->context[3], poly->context[5] );
|
nkeynes@736 | 830 | } else {
|
nkeynes@736 | 831 | fprintf( f, "\n" );
|
nkeynes@736 | 832 | }
|
nkeynes@736 | 833 |
|
nkeynes@736 | 834 | for( j=0; j<poly->vertex_count; j++ ) {
|
nkeynes@736 | 835 | struct vertex_struct *v = &pvr2_scene.vertex_array[poly->vertex_index+j];
|
nkeynes@784 | 836 | fprintf( f, " %.5f %.5f %.5f, (%.5f,%.5f) %.5f,%.5f,%.5f,%.5f %.5f %.5f %.5f %.5f\n", v->x, v->y, v->z, v->u, v->v,
|
nkeynes@827 | 837 | v->rgba[0], v->rgba[1], v->rgba[2], v->rgba[3],
|
nkeynes@784 | 838 | v->offset_rgba[0], v->offset_rgba[1], v->offset_rgba[2], v->offset_rgba[3] );
|
nkeynes@736 | 839 | }
|
nkeynes@736 | 840 | if( poly->mod_vertex_index != -1 ) {
|
nkeynes@736 | 841 | fprintf( f, " ---\n" );
|
nkeynes@736 | 842 | for( j=0; j<poly->vertex_count; j++ ) {
|
nkeynes@736 | 843 | struct vertex_struct *v = &pvr2_scene.vertex_array[poly->mod_vertex_index+j];
|
nkeynes@784 | 844 | fprintf( f, " %.5f %.5f %.5f, (%.5f,%.5f) %.5f,%.5f,%.5f,%.5f %.5f %.5f %.5f %.5f\n", v->x, v->y, v->z, v->u, v->v,
|
nkeynes@827 | 845 | v->rgba[0], v->rgba[1], v->rgba[2], v->rgba[3],
|
nkeynes@784 | 846 | v->offset_rgba[0], v->offset_rgba[1], v->offset_rgba[2], v->offset_rgba[3] );
|
nkeynes@736 | 847 | }
|
nkeynes@736 | 848 | }
|
nkeynes@645 | 849 | }
|
nkeynes@645 | 850 |
|
nkeynes@645 | 851 | }
|