nkeynes@100 | 1 | /**
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nkeynes@191 | 2 | * $Id: render.c,v 1.12 2006-08-02 06:24:08 nkeynes Exp $
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nkeynes@100 | 3 | *
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nkeynes@189 | 4 | * PVR2 Renderer support. This part is primarily
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nkeynes@100 | 5 | *
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nkeynes@100 | 6 | * Copyright (c) 2005 Nathan Keynes.
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nkeynes@100 | 7 | *
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nkeynes@100 | 8 | * This program is free software; you can redistribute it and/or modify
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nkeynes@100 | 9 | * it under the terms of the GNU General Public License as published by
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nkeynes@100 | 10 | * the Free Software Foundation; either version 2 of the License, or
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nkeynes@100 | 11 | * (at your option) any later version.
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nkeynes@100 | 12 | *
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nkeynes@100 | 13 | * This program is distributed in the hope that it will be useful,
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nkeynes@100 | 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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nkeynes@100 | 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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nkeynes@100 | 16 | * GNU General Public License for more details.
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nkeynes@100 | 17 | */
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nkeynes@100 | 18 |
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nkeynes@100 | 19 | #include "pvr2/pvr2.h"
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nkeynes@100 | 20 | #include "asic.h"
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nkeynes@103 | 21 |
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nkeynes@103 | 22 | static int pvr2_render_colour_format[8] = {
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nkeynes@103 | 23 | COLFMT_ARGB1555, COLFMT_RGB565, COLFMT_ARGB4444, COLFMT_ARGB1555,
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nkeynes@103 | 24 | COLFMT_RGB888, COLFMT_ARGB8888, COLFMT_ARGB8888, COLFMT_ARGB4444 };
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nkeynes@103 | 25 |
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nkeynes@100 | 26 |
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nkeynes@100 | 27 | /**
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nkeynes@103 | 28 | * Describes a rendering buffer that's actually held in GL, for when we need
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nkeynes@103 | 29 | * to fetch the bits back to vram.
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nkeynes@103 | 30 | */
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nkeynes@103 | 31 | typedef struct pvr2_render_buffer {
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nkeynes@161 | 32 | sh4addr_t render_addr; /* The actual address rendered to in pvr ram */
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nkeynes@161 | 33 | uint32_t size; /* Length of rendering region in bytes */
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nkeynes@103 | 34 | int width, height;
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nkeynes@103 | 35 | int colour_format;
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nkeynes@103 | 36 | } *pvr2_render_buffer_t;
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nkeynes@103 | 37 |
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nkeynes@103 | 38 | struct pvr2_render_buffer front_buffer;
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nkeynes@103 | 39 | struct pvr2_render_buffer back_buffer;
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nkeynes@103 | 40 |
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nkeynes@128 | 41 | typedef struct pvr2_bgplane_packed {
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nkeynes@128 | 42 | uint32_t poly_cfg, poly_mode;
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nkeynes@128 | 43 | uint32_t texture_mode;
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nkeynes@128 | 44 | float x1, y1, z1;
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nkeynes@128 | 45 | uint32_t colour1;
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nkeynes@128 | 46 | float x2, y2, z2;
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nkeynes@128 | 47 | uint32_t colour2;
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nkeynes@128 | 48 | float x3, y3, z3;
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nkeynes@128 | 49 | uint32_t colour3;
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nkeynes@128 | 50 | } *pvr2_bgplane_packed_t;
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nkeynes@128 | 51 |
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nkeynes@128 | 52 |
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nkeynes@103 | 53 |
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nkeynes@103 | 54 | void pvr2_render_copy_to_sh4( pvr2_render_buffer_t buffer,
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nkeynes@103 | 55 | gboolean backBuffer );
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nkeynes@103 | 56 |
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nkeynes@108 | 57 | int pvr2_render_font_list = -1;
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nkeynes@132 | 58 | int pvr2_render_trace = 0;
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nkeynes@108 | 59 |
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nkeynes@132 | 60 | int glPrintf( int x, int y, const char *fmt, ... )
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nkeynes@108 | 61 | {
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nkeynes@108 | 62 | va_list ap; /* our argument pointer */
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nkeynes@108 | 63 | char buf[256];
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nkeynes@108 | 64 | int len;
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nkeynes@108 | 65 | if (fmt == NULL) /* if there is no string to draw do nothing */
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nkeynes@108 | 66 | return;
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nkeynes@108 | 67 | va_start(ap, fmt);
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nkeynes@108 | 68 | len = vsnprintf(buf, sizeof(buf), fmt, ap);
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nkeynes@108 | 69 | va_end(ap);
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nkeynes@108 | 70 |
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nkeynes@108 | 71 |
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nkeynes@108 | 72 | glPushAttrib(GL_LIST_BIT);
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nkeynes@132 | 73 | glDisable( GL_DEPTH_TEST );
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nkeynes@132 | 74 | glDisable( GL_BLEND );
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nkeynes@132 | 75 | glDisable( GL_TEXTURE_2D );
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nkeynes@132 | 76 | glDisable( GL_ALPHA_TEST );
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nkeynes@189 | 77 | glDisable( GL_CULL_FACE );
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nkeynes@108 | 78 | glListBase(pvr2_render_font_list - 32);
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nkeynes@132 | 79 | glColor3f( 1.0, 1.0, 1.0 );
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nkeynes@132 | 80 | glRasterPos2i( x, y );
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nkeynes@108 | 81 | glCallLists(len, GL_UNSIGNED_BYTE, buf);
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nkeynes@108 | 82 | glPopAttrib();
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nkeynes@108 | 83 |
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nkeynes@108 | 84 | return len;
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nkeynes@108 | 85 | }
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nkeynes@108 | 86 |
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nkeynes@189 | 87 | void glDrawGrid( int width, int height )
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nkeynes@189 | 88 | {
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nkeynes@189 | 89 | int i;
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nkeynes@189 | 90 | glDisable( GL_DEPTH_TEST );
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nkeynes@189 | 91 | glLineWidth(1);
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nkeynes@189 | 92 |
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nkeynes@189 | 93 | glBegin( GL_LINES );
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nkeynes@189 | 94 | glColor4f( 1.0, 1.0, 1.0, 1.0 );
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nkeynes@189 | 95 | for( i=32; i<width; i+=32 ) {
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nkeynes@189 | 96 | glVertex3f( i, 0.0, 3.0 );
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nkeynes@189 | 97 | glVertex3f( i,height-1, 3.0 );
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nkeynes@189 | 98 | }
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nkeynes@189 | 99 |
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nkeynes@189 | 100 | for( i=32; i<height; i+=32 ) {
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nkeynes@189 | 101 | glVertex3f( 0.0, i, 3.0 );
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nkeynes@189 | 102 | glVertex3f( width, i, 3.0 );
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nkeynes@189 | 103 | }
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nkeynes@189 | 104 | glEnd();
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nkeynes@189 | 105 |
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nkeynes@189 | 106 | }
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nkeynes@189 | 107 |
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nkeynes@103 | 108 |
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nkeynes@103 | 109 | gboolean pvr2_render_init( void )
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nkeynes@103 | 110 | {
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nkeynes@103 | 111 | front_buffer.render_addr = -1;
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nkeynes@103 | 112 | back_buffer.render_addr = -1;
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nkeynes@103 | 113 | }
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nkeynes@103 | 114 |
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nkeynes@103 | 115 | /**
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nkeynes@161 | 116 | * Invalidate any caching on the supplied address. Specifically, if it falls
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nkeynes@161 | 117 | * within either the front buffer or back buffer, flush the buffer back to
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nkeynes@161 | 118 | * PVR2 ram (note that front buffer flush may be corrupt under some
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nkeynes@161 | 119 | * circumstances).
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nkeynes@161 | 120 | */
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nkeynes@161 | 121 | gboolean pvr2_render_invalidate( sh4addr_t address )
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nkeynes@161 | 122 | {
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nkeynes@161 | 123 | address = address & 0x1FFFFFFF;
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nkeynes@161 | 124 | if( front_buffer.render_addr != -1 &&
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nkeynes@161 | 125 | front_buffer.render_addr <= address &&
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nkeynes@161 | 126 | (front_buffer.render_addr + front_buffer.size) > address ) {
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nkeynes@161 | 127 | pvr2_render_copy_to_sh4( &front_buffer, FALSE );
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nkeynes@161 | 128 | front_buffer.render_addr = -1;
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nkeynes@161 | 129 | return TRUE;
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nkeynes@161 | 130 | } else if( back_buffer.render_addr != -1 &&
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nkeynes@161 | 131 | back_buffer.render_addr <= address &&
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nkeynes@161 | 132 | (back_buffer.render_addr + back_buffer.size) > address ) {
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nkeynes@161 | 133 | pvr2_render_copy_to_sh4( &back_buffer, TRUE );
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nkeynes@161 | 134 | back_buffer.render_addr = -1;
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nkeynes@161 | 135 | return TRUE;
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nkeynes@161 | 136 | }
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nkeynes@161 | 137 | return FALSE;
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nkeynes@161 | 138 | }
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nkeynes@161 | 139 |
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nkeynes@161 | 140 | /**
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nkeynes@103 | 141 | * Display a rendered frame if one is available.
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nkeynes@103 | 142 | * @param address An address in PVR ram (0500000 range).
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nkeynes@103 | 143 | * @return TRUE if a frame was available to be displayed, otherwise false.
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nkeynes@103 | 144 | */
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nkeynes@103 | 145 | gboolean pvr2_render_display_frame( uint32_t address )
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nkeynes@103 | 146 | {
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nkeynes@103 | 147 | if( front_buffer.render_addr == address ) {
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nkeynes@103 | 148 | /* Current front buffer is already displayed, so do nothing
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nkeynes@103 | 149 | * and tell the caller that all is well.
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nkeynes@103 | 150 | */
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nkeynes@103 | 151 | return TRUE;
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nkeynes@103 | 152 | }
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nkeynes@103 | 153 | if( back_buffer.render_addr == address ) {
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nkeynes@103 | 154 | /* The more useful case - back buffer is to be displayed. Swap
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nkeynes@103 | 155 | * the buffers
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nkeynes@103 | 156 | */
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nkeynes@144 | 157 | display_driver->display_back_buffer();
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nkeynes@103 | 158 | front_buffer = back_buffer;
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nkeynes@103 | 159 | back_buffer.render_addr = -1;
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nkeynes@103 | 160 | return TRUE;
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nkeynes@103 | 161 | }
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nkeynes@103 | 162 | return FALSE;
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nkeynes@108 | 163 | }
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nkeynes@103 | 164 |
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nkeynes@103 | 165 | /**
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nkeynes@103 | 166 | * Prepare the OpenGL context to receive instructions for a new frame.
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nkeynes@103 | 167 | */
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nkeynes@103 | 168 | static void pvr2_render_prepare_context( sh4addr_t render_addr,
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nkeynes@103 | 169 | uint32_t width, uint32_t height,
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nkeynes@103 | 170 | uint32_t colour_format,
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nkeynes@128 | 171 | float bgplanez,
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nkeynes@103 | 172 | gboolean texture_target )
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nkeynes@103 | 173 | {
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nkeynes@103 | 174 | /* Select and initialize the render context */
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nkeynes@144 | 175 | display_driver->set_render_format( width, height, colour_format, texture_target );
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nkeynes@103 | 176 |
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nkeynes@132 | 177 | if( pvr2_render_font_list == -1 ) {
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nkeynes@132 | 178 | pvr2_render_font_list = video_glx_load_font( "-*-helvetica-*-r-normal--16-*-*-*-p-*-iso8859-1");
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nkeynes@132 | 179 | }
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nkeynes@132 | 180 |
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nkeynes@103 | 181 | if( back_buffer.render_addr != -1 &&
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nkeynes@103 | 182 | back_buffer.render_addr != render_addr ) {
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nkeynes@103 | 183 | /* There's a current back buffer, and we're rendering somewhere else -
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nkeynes@103 | 184 | * flush the back buffer back to vram and start a new back buffer
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nkeynes@103 | 185 | */
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nkeynes@103 | 186 | pvr2_render_copy_to_sh4( &back_buffer, TRUE );
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nkeynes@103 | 187 | }
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nkeynes@103 | 188 |
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nkeynes@103 | 189 | if( front_buffer.render_addr == render_addr ) {
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nkeynes@103 | 190 | /* In case we've been asked to render to the current front buffer -
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nkeynes@103 | 191 | * invalidate the front buffer and render to the back buffer, ensuring
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nkeynes@103 | 192 | * we swap at the next frame display.
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nkeynes@103 | 193 | */
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nkeynes@103 | 194 | front_buffer.render_addr = -1;
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nkeynes@103 | 195 | }
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nkeynes@103 | 196 | back_buffer.render_addr = render_addr;
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nkeynes@103 | 197 | back_buffer.width = width;
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nkeynes@103 | 198 | back_buffer.height = height;
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nkeynes@103 | 199 | back_buffer.colour_format = colour_format;
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nkeynes@161 | 200 | back_buffer.size = width * height * colour_format_bytes[colour_format];
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nkeynes@103 | 201 |
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nkeynes@103 | 202 | /* Setup the display model */
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nkeynes@103 | 203 | glDrawBuffer(GL_BACK);
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nkeynes@103 | 204 | glShadeModel(GL_SMOOTH);
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nkeynes@103 | 205 | glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
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nkeynes@103 | 206 | glViewport( 0, 0, width, height );
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nkeynes@103 | 207 | glMatrixMode(GL_PROJECTION);
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nkeynes@103 | 208 | glLoadIdentity();
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nkeynes@169 | 209 | glOrtho( 0, width, height, 0, bgplanez, -4 );
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nkeynes@103 | 210 | glMatrixMode(GL_MODELVIEW);
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nkeynes@103 | 211 | glLoadIdentity();
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nkeynes@108 | 212 | glCullFace( GL_BACK );
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nkeynes@103 | 213 |
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nkeynes@103 | 214 | /* Clear out the buffers */
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nkeynes@189 | 215 | glDisable( GL_SCISSOR_TEST );
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nkeynes@103 | 216 | glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
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nkeynes@128 | 217 | glClearDepth(bgplanez);
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nkeynes@103 | 218 | glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
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nkeynes@103 | 219 | }
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nkeynes@103 | 220 |
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nkeynes@103 | 221 |
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nkeynes@128 | 222 | #define MIN3( a,b,c ) ((a) < (b) ? ( (a) < (c) ? (a) : (c) ) : ((b) < (c) ? (b) : (c)) )
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nkeynes@128 | 223 | #define MAX3( a,b,c ) ((a) > (b) ? ( (a) > (c) ? (a) : (c) ) : ((b) > (c) ? (b) : (c)) )
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nkeynes@128 | 224 |
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nkeynes@128 | 225 | /**
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nkeynes@128 | 226 | * Render the background plane as best we can. Unfortunately information
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nkeynes@128 | 227 | * is a little scant, to say the least.
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nkeynes@128 | 228 | */
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nkeynes@128 | 229 | void pvr2_render_draw_backplane( uint32_t mode, uint32_t *poly )
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nkeynes@128 | 230 | {
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nkeynes@189 | 231 |
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nkeynes@128 | 232 | if( (mode >> 24) == 0x01 ) {
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nkeynes@128 | 233 | /* Packed colour. I think */
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nkeynes@128 | 234 | pvr2_bgplane_packed_t bg = (pvr2_bgplane_packed_t)poly;
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nkeynes@128 | 235 | if( bg->colour1 != bg->colour2 || bg->colour2 != bg->colour3 ) {
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nkeynes@128 | 236 | WARN( "Multiple background colours specified. Confused" );
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nkeynes@189 | 237 | fprintf( stderr, "bgplane mode: %08X PBUF: %08X\n", mode,
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nkeynes@191 | 238 | MMIO_READ( PVR2, RENDER_POLYBASE ) );
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nkeynes@189 | 239 | fwrite_dump( poly, 80, stderr );
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nkeynes@128 | 240 | }
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nkeynes@128 | 241 | float x1 = MIN3( bg->x1, bg->x2, bg->x3 );
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nkeynes@128 | 242 | float y1 = MIN3( bg->y1, bg->y2, bg->y3 );
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nkeynes@128 | 243 | float x2 = MAX3( bg->x1, bg->x2, bg->x3 );
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nkeynes@128 | 244 | float y2 = MAX3( bg->y1, bg->y2, bg->y3 );
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nkeynes@128 | 245 | float z = MIN3( bg->z1, bg->z2, bg->z3 );
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nkeynes@128 | 246 | glDisable( GL_TEXTURE_2D );
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nkeynes@128 | 247 | glDisable( GL_DEPTH_TEST );
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nkeynes@128 | 248 | glColor3ub( (uint8_t)(bg->colour1 >> 16), (uint8_t)(bg->colour1 >> 8),
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nkeynes@128 | 249 | (uint8_t)bg->colour1 );
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nkeynes@128 | 250 | glBegin( GL_QUADS );
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nkeynes@128 | 251 | glVertex3f( x1, y1, z );
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nkeynes@128 | 252 | glVertex3f( x2, y1, z );
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nkeynes@128 | 253 | glVertex3f( x2, y2, z );
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nkeynes@128 | 254 | glVertex3f( x1, y2, z );
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nkeynes@128 | 255 | glEnd();
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nkeynes@128 | 256 | } else {
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nkeynes@128 | 257 | WARN( "Unknown bgplane mode: %08X", mode );
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nkeynes@128 | 258 | fwrite_dump( poly, 48, stderr );
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nkeynes@128 | 259 | }
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nkeynes@128 | 260 | }
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nkeynes@128 | 261 |
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nkeynes@103 | 262 | /**
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nkeynes@103 | 263 | * Render a complete scene into the OpenGL back buffer.
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nkeynes@103 | 264 | * Note: this will probably need to be broken up eventually once timings are
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nkeynes@100 | 265 | * determined.
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nkeynes@100 | 266 | */
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nkeynes@103 | 267 | void pvr2_render_scene( )
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nkeynes@100 | 268 | {
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nkeynes@103 | 269 | struct tile_descriptor *tile_desc =
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nkeynes@191 | 270 | (struct tile_descriptor *)mem_get_region(PVR2_RAM_BASE + MMIO_READ( PVR2, RENDER_TILEBASE ));
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nkeynes@100 | 271 |
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nkeynes@191 | 272 | uint32_t render_addr = MMIO_READ( PVR2, RENDER_ADDR1 );
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nkeynes@103 | 273 | gboolean render_to_tex;
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nkeynes@103 | 274 | if( render_addr & 0x01000000 ) {
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nkeynes@103 | 275 | render_addr = (render_addr & 0x00FFFFFF) + PVR2_RAM_BASE_INT;
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nkeynes@103 | 276 | /* Heuristic - if we're rendering to the interlaced region we're
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nkeynes@103 | 277 | * probably creating a texture rather than rendering actual output.
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nkeynes@103 | 278 | * We can optimise for this case a little
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nkeynes@103 | 279 | */
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nkeynes@103 | 280 | render_to_tex = TRUE;
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nkeynes@118 | 281 | WARN( "Render to texture not supported properly yet" );
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nkeynes@103 | 282 | } else {
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nkeynes@103 | 283 | render_addr = (render_addr & 0x00FFFFFF) + PVR2_RAM_BASE;
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nkeynes@103 | 284 | render_to_tex = FALSE;
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nkeynes@103 | 285 | }
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nkeynes@128 | 286 |
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nkeynes@191 | 287 | float bgplanez = MMIO_READF( PVR2, RENDER_FARCLIP );
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nkeynes@191 | 288 | uint32_t render_mode = MMIO_READ( PVR2, RENDER_MODE );
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nkeynes@103 | 289 | int width = 640; /* FIXME - get this from the tile buffer */
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nkeynes@103 | 290 | int height = 480;
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nkeynes@103 | 291 | int colour_format = pvr2_render_colour_format[render_mode&0x07];
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nkeynes@103 | 292 | pvr2_render_prepare_context( render_addr, width, height, colour_format,
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nkeynes@128 | 293 | bgplanez, render_to_tex );
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nkeynes@103 | 294 |
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nkeynes@191 | 295 | int clip_x = MMIO_READ( PVR2, RENDER_HCLIP ) & 0x03FF;
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nkeynes@191 | 296 | int clip_y = MMIO_READ( PVR2, RENDER_VCLIP ) & 0x03FF;
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nkeynes@191 | 297 | int clip_width = ((MMIO_READ( PVR2, RENDER_HCLIP ) >> 16) & 0x03FF) - clip_x + 1;
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nkeynes@191 | 298 | int clip_height= ((MMIO_READ( PVR2, RENDER_VCLIP ) >> 16) & 0x03FF) - clip_y + 1;
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nkeynes@103 | 299 |
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nkeynes@103 | 300 | /* Fog setup goes here */
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nkeynes@103 | 301 |
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nkeynes@128 | 302 | /* Render the background plane */
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nkeynes@191 | 303 | uint32_t bgplane_mode = MMIO_READ(PVR2, RENDER_BGPLANE);
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nkeynes@189 | 304 | uint32_t *display_list =
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nkeynes@191 | 305 | (uint32_t *)mem_get_region(PVR2_RAM_BASE + MMIO_READ( PVR2, RENDER_POLYBASE ));
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nkeynes@189 | 306 |
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nkeynes@189 | 307 | uint32_t *bgplane = display_list + (((bgplane_mode & 0x00FFFFFF)) >> 3) ;
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nkeynes@128 | 308 | pvr2_render_draw_backplane( bgplane_mode, bgplane );
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nkeynes@128 | 309 |
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nkeynes@189 | 310 | pvr2_render_tilebuffer( width, height, clip_x, clip_y,
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nkeynes@189 | 311 | clip_x + clip_width, clip_y + clip_height );
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nkeynes@103 | 312 |
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nkeynes@103 | 313 | /* Post-render cleanup and update */
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nkeynes@103 | 314 |
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nkeynes@108 | 315 | /* Add frame, fps, etc data */
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nkeynes@189 | 316 | //glDrawGrid( width, height );
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nkeynes@132 | 317 | glPrintf( 4, 16, "Frame %d", pvr2_get_frame_count() );
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nkeynes@103 | 318 | /* Generate end of render event */
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nkeynes@100 | 319 | asic_event( EVENT_PVR_RENDER_DONE );
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nkeynes@132 | 320 | DEBUG( "Rendered frame %d", pvr2_get_frame_count() );
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nkeynes@100 | 321 | }
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nkeynes@103 | 322 |
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nkeynes@103 | 323 |
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nkeynes@103 | 324 | /**
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nkeynes@103 | 325 | * Flush the indicated render buffer back to PVR. Caller is responsible for
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nkeynes@103 | 326 | * tracking whether there is actually anything in the buffer.
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nkeynes@103 | 327 | *
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nkeynes@103 | 328 | * @param buffer A render buffer indicating the address to store to, and the
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nkeynes@103 | 329 | * format the data needs to be in.
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nkeynes@103 | 330 | * @param backBuffer TRUE to flush the back buffer, FALSE for
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nkeynes@103 | 331 | * the front buffer.
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nkeynes@103 | 332 | */
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nkeynes@103 | 333 | void pvr2_render_copy_to_sh4( pvr2_render_buffer_t buffer,
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nkeynes@103 | 334 | gboolean backBuffer )
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nkeynes@103 | 335 | {
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nkeynes@103 | 336 | if( buffer->render_addr == -1 )
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nkeynes@103 | 337 | return;
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nkeynes@103 | 338 | GLenum type, format = GL_RGBA;
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nkeynes@103 | 339 | int size = buffer->width * buffer->height;
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nkeynes@103 | 340 |
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nkeynes@103 | 341 | switch( buffer->colour_format ) {
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nkeynes@103 | 342 | case COLFMT_RGB565:
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nkeynes@103 | 343 | type = GL_UNSIGNED_SHORT_5_6_5;
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nkeynes@103 | 344 | format = GL_RGB;
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nkeynes@103 | 345 | size <<= 1;
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nkeynes@103 | 346 | break;
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nkeynes@103 | 347 | case COLFMT_RGB888:
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nkeynes@103 | 348 | type = GL_UNSIGNED_INT;
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nkeynes@103 | 349 | format = GL_RGB;
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nkeynes@103 | 350 | size = (size<<1)+size;
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nkeynes@103 | 351 | break;
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nkeynes@103 | 352 | case COLFMT_ARGB1555:
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nkeynes@103 | 353 | type = GL_UNSIGNED_SHORT_5_5_5_1;
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nkeynes@103 | 354 | size <<= 1;
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nkeynes@103 | 355 | break;
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nkeynes@103 | 356 | case COLFMT_ARGB4444:
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nkeynes@103 | 357 | type = GL_UNSIGNED_SHORT_4_4_4_4;
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nkeynes@103 | 358 | size <<= 1;
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nkeynes@103 | 359 | break;
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nkeynes@103 | 360 | case COLFMT_ARGB8888:
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nkeynes@103 | 361 | type = GL_UNSIGNED_INT_8_8_8_8;
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nkeynes@103 | 362 | size <<= 2;
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nkeynes@103 | 363 | break;
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nkeynes@103 | 364 | }
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nkeynes@103 | 365 |
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nkeynes@103 | 366 | if( backBuffer ) {
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nkeynes@103 | 367 | glFinish();
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nkeynes@103 | 368 | glReadBuffer( GL_BACK );
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nkeynes@103 | 369 | } else {
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nkeynes@103 | 370 | glReadBuffer( GL_FRONT );
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nkeynes@103 | 371 | }
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nkeynes@103 | 372 |
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nkeynes@103 | 373 | if( buffer->render_addr & 0xFF000000 == 0x04000000 ) {
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nkeynes@103 | 374 | /* Interlaced buffer. Go the double copy... :( */
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nkeynes@103 | 375 | char target[size];
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nkeynes@103 | 376 | glReadPixels( 0, 0, buffer->width, buffer->height, format, type, target );
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nkeynes@103 | 377 | pvr2_vram64_write( buffer->render_addr, target, size );
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nkeynes@103 | 378 | } else {
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nkeynes@103 | 379 | /* Regular buffer - go direct */
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nkeynes@103 | 380 | char *target = mem_get_region( buffer->render_addr );
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nkeynes@103 | 381 | glReadPixels( 0, 0, buffer->width, buffer->height, format, type, target );
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nkeynes@103 | 382 | }
|
nkeynes@103 | 383 | }
|
nkeynes@103 | 384 |
|
nkeynes@103 | 385 |
|
nkeynes@103 | 386 | /**
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nkeynes@103 | 387 | * Copy data from PVR ram into the GL render buffer.
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nkeynes@103 | 388 | *
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nkeynes@103 | 389 | * @param buffer A render buffer indicating the address to read from, and the
|
nkeynes@103 | 390 | * format the data is in.
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nkeynes@103 | 391 | * @param backBuffer TRUE to write the back buffer, FALSE for
|
nkeynes@103 | 392 | * the front buffer.
|
nkeynes@103 | 393 | */
|
nkeynes@103 | 394 | void pvr2_render_copy_from_sh4( pvr2_render_buffer_t buffer,
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nkeynes@103 | 395 | gboolean backBuffer )
|
nkeynes@103 | 396 | {
|
nkeynes@103 | 397 | if( buffer->render_addr == -1 )
|
nkeynes@103 | 398 | return;
|
nkeynes@103 | 399 | GLenum type, format = GL_RGBA;
|
nkeynes@103 | 400 | int size = buffer->width * buffer->height;
|
nkeynes@103 | 401 |
|
nkeynes@103 | 402 | switch( buffer->colour_format ) {
|
nkeynes@103 | 403 | case COLFMT_RGB565:
|
nkeynes@103 | 404 | type = GL_UNSIGNED_SHORT_5_6_5;
|
nkeynes@103 | 405 | format = GL_RGB;
|
nkeynes@103 | 406 | size <<= 1;
|
nkeynes@103 | 407 | break;
|
nkeynes@103 | 408 | case COLFMT_RGB888:
|
nkeynes@103 | 409 | type = GL_UNSIGNED_INT;
|
nkeynes@103 | 410 | format = GL_RGB;
|
nkeynes@103 | 411 | size = (size<<1)+size;
|
nkeynes@103 | 412 | break;
|
nkeynes@103 | 413 | case COLFMT_ARGB1555:
|
nkeynes@103 | 414 | type = GL_UNSIGNED_SHORT_5_5_5_1;
|
nkeynes@103 | 415 | size <<= 1;
|
nkeynes@103 | 416 | break;
|
nkeynes@103 | 417 | case COLFMT_ARGB4444:
|
nkeynes@103 | 418 | type = GL_UNSIGNED_SHORT_4_4_4_4;
|
nkeynes@103 | 419 | size <<= 1;
|
nkeynes@103 | 420 | break;
|
nkeynes@103 | 421 | case COLFMT_ARGB8888:
|
nkeynes@103 | 422 | type = GL_UNSIGNED_INT_8_8_8_8;
|
nkeynes@103 | 423 | size <<= 2;
|
nkeynes@103 | 424 | break;
|
nkeynes@103 | 425 | }
|
nkeynes@103 | 426 |
|
nkeynes@103 | 427 | if( backBuffer ) {
|
nkeynes@103 | 428 | glDrawBuffer( GL_BACK );
|
nkeynes@103 | 429 | } else {
|
nkeynes@103 | 430 | glDrawBuffer( GL_FRONT );
|
nkeynes@103 | 431 | }
|
nkeynes@103 | 432 |
|
nkeynes@103 | 433 | glRasterPos2i( 0, 0 );
|
nkeynes@103 | 434 | if( buffer->render_addr & 0xFF000000 == 0x04000000 ) {
|
nkeynes@103 | 435 | /* Interlaced buffer. Go the double copy... :( */
|
nkeynes@103 | 436 | char target[size];
|
nkeynes@103 | 437 | pvr2_vram64_read( target, buffer->render_addr, size );
|
nkeynes@103 | 438 | glDrawPixels( buffer->width, buffer->height,
|
nkeynes@103 | 439 | format, type, target );
|
nkeynes@103 | 440 | } else {
|
nkeynes@103 | 441 | /* Regular buffer - go direct */
|
nkeynes@103 | 442 | char *target = mem_get_region( buffer->render_addr );
|
nkeynes@103 | 443 | glDrawPixels( buffer->width, buffer->height,
|
nkeynes@103 | 444 | format, type, target );
|
nkeynes@103 | 445 | }
|
nkeynes@103 | 446 | }
|