nkeynes@639 | 1 | /**
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nkeynes@639 | 2 | * $Id$
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nkeynes@639 | 3 | *
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nkeynes@639 | 4 | * Standard OpenGL rendering engine.
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nkeynes@639 | 5 | *
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nkeynes@639 | 6 | * Copyright (c) 2005 Nathan Keynes.
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nkeynes@639 | 7 | *
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nkeynes@639 | 8 | * This program is free software; you can redistribute it and/or modify
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nkeynes@639 | 9 | * it under the terms of the GNU General Public License as published by
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nkeynes@639 | 10 | * the Free Software Foundation; either version 2 of the License, or
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nkeynes@639 | 11 | * (at your option) any later version.
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nkeynes@639 | 12 | *
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nkeynes@639 | 13 | * This program is distributed in the hope that it will be useful,
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nkeynes@639 | 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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nkeynes@639 | 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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nkeynes@639 | 16 | * GNU General Public License for more details.
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nkeynes@639 | 17 | */
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nkeynes@639 | 18 |
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nkeynes@645 | 19 | #include <assert.h>
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nkeynes@669 | 20 | #include <sys/time.h>
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nkeynes@639 | 21 | #include "display.h"
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nkeynes@639 | 22 | #include "pvr2/pvr2.h"
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nkeynes@677 | 23 | #include "pvr2/pvr2mmio.h"
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nkeynes@639 | 24 | #include "pvr2/scene.h"
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nkeynes@665 | 25 | #include "pvr2/glutil.h"
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nkeynes@653 | 26 |
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nkeynes@934 | 27 | #define IS_EMPTY_TILE_LIST(p) ((*((uint32_t *)(pvr2_main_ram+(p))) >> 28) == 0x0F)
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nkeynes@639 | 28 |
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nkeynes@645 | 29 | int pvr2_poly_depthmode[8] = { GL_NEVER, GL_LESS, GL_EQUAL, GL_LEQUAL,
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nkeynes@736 | 30 | GL_GREATER, GL_NOTEQUAL, GL_GEQUAL,
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nkeynes@736 | 31 | GL_ALWAYS };
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nkeynes@645 | 32 | int pvr2_poly_srcblend[8] = {
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nkeynes@736 | 33 | GL_ZERO, GL_ONE, GL_DST_COLOR, GL_ONE_MINUS_DST_COLOR,
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nkeynes@736 | 34 | GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_DST_ALPHA,
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nkeynes@736 | 35 | GL_ONE_MINUS_DST_ALPHA };
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nkeynes@645 | 36 | int pvr2_poly_dstblend[8] = {
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nkeynes@736 | 37 | GL_ZERO, GL_ONE, GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR,
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nkeynes@736 | 38 | GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_DST_ALPHA,
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nkeynes@736 | 39 | GL_ONE_MINUS_DST_ALPHA };
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nkeynes@645 | 40 | int pvr2_poly_texblend[4] = {
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nkeynes@736 | 41 | GL_REPLACE,
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nkeynes@736 | 42 | GL_MODULATE,
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nkeynes@736 | 43 | GL_DECAL,
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nkeynes@736 | 44 | GL_MODULATE
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nkeynes@645 | 45 | };
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nkeynes@645 | 46 |
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nkeynes@639 | 47 | /**
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nkeynes@639 | 48 | * Clip the tile bounds to the clipping plane.
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nkeynes@639 | 49 | * @return TRUE if the tile was not clipped completely.
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nkeynes@639 | 50 | */
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nkeynes@639 | 51 | static gboolean clip_tile_bounds( uint32_t *tile, float *clip )
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nkeynes@639 | 52 | {
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nkeynes@639 | 53 | if( tile[0] < clip[0] ) tile[0] = clip[0];
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nkeynes@639 | 54 | if( tile[1] > clip[1] ) tile[1] = clip[1];
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nkeynes@639 | 55 | if( tile[2] < clip[2] ) tile[2] = clip[2];
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nkeynes@639 | 56 | if( tile[3] > clip[3] ) tile[3] = clip[3];
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nkeynes@639 | 57 | return tile[0] < tile[1] && tile[2] < tile[3];
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nkeynes@639 | 58 | }
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nkeynes@639 | 59 |
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nkeynes@645 | 60 | void pvr2_scene_load_textures()
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nkeynes@645 | 61 | {
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nkeynes@645 | 62 | int i;
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nkeynes@886 | 63 |
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nkeynes@1135 | 64 | texcache_begin_scene( MMIO_READ( PVR2, RENDER_PALETTE ) & 0x03,
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nkeynes@886 | 65 | (MMIO_READ( PVR2, RENDER_TEXSIZE ) & 0x003F) << 5 );
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nkeynes@886 | 66 |
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nkeynes@645 | 67 | for( i=0; i < pvr2_scene.poly_count; i++ ) {
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nkeynes@736 | 68 | struct polygon_struct *poly = &pvr2_scene.poly_array[i];
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nkeynes@736 | 69 | if( POLY1_TEXTURED(poly->context[0]) ) {
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nkeynes@1135 | 70 | poly->tex_id = texcache_get_texture( poly->context[1], poly->context[2] );
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nkeynes@736 | 71 | if( poly->mod_vertex_index != -1 ) {
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nkeynes@863 | 72 | if( pvr2_scene.shadow_mode == SHADOW_FULL ) {
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nkeynes@1135 | 73 | poly->mod_tex_id = texcache_get_texture( poly->context[3], poly->context[4] );
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nkeynes@863 | 74 | } else {
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nkeynes@863 | 75 | poly->mod_tex_id = poly->tex_id;
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nkeynes@863 | 76 | }
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nkeynes@736 | 77 | }
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nkeynes@736 | 78 | } else {
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nkeynes@1138 | 79 | poly->tex_id = 0;
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nkeynes@1138 | 80 | poly->mod_tex_id = 0;
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nkeynes@736 | 81 | }
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nkeynes@645 | 82 | }
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nkeynes@645 | 83 | }
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nkeynes@645 | 84 |
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nkeynes@645 | 85 |
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nkeynes@645 | 86 |
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nkeynes@639 | 87 | /**
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nkeynes@639 | 88 | * Once-off call to setup the OpenGL context.
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nkeynes@639 | 89 | */
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nkeynes@639 | 90 | void pvr2_setup_gl_context()
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nkeynes@639 | 91 | {
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nkeynes@665 | 92 |
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nkeynes@665 | 93 | if( glsl_is_supported() ) {
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nkeynes@1130 | 94 | if( !glsl_load_shaders( ) ) {
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nkeynes@665 | 95 | WARN( "Unable to load GL shaders" );
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nkeynes@665 | 96 | }
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nkeynes@665 | 97 | }
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nkeynes@736 | 98 |
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nkeynes@639 | 99 | texcache_gl_init(); // Allocate texture IDs
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nkeynes@1133 | 100 | glDisable( GL_CULL_FACE );
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nkeynes@639 | 101 | glEnable( GL_BLEND );
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nkeynes@649 | 102 | glEnable( GL_DEPTH_TEST );
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nkeynes@639 | 103 | glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
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nkeynes@639 | 104 | glMatrixMode(GL_MODELVIEW);
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nkeynes@639 | 105 | glLoadIdentity();
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nkeynes@639 | 106 |
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nkeynes@687 | 107 | #ifdef HAVE_OPENGL_CLAMP_COLOR
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nkeynes@687 | 108 | if( isGLExtensionSupported("GL_ARB_color_buffer_float") ) {
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nkeynes@687 | 109 | glClampColorARB(GL_CLAMP_VERTEX_COLOR_ARB, GL_FALSE );
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nkeynes@687 | 110 | glClampColorARB(GL_CLAMP_FRAGMENT_COLOR_ARB, GL_FALSE );
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nkeynes@687 | 111 | }
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nkeynes@687 | 112 | #endif
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nkeynes@653 | 113 |
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nkeynes@639 | 114 | glEnableClientState( GL_COLOR_ARRAY );
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nkeynes@639 | 115 | glEnableClientState( GL_VERTEX_ARRAY );
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nkeynes@639 | 116 | glEnableClientState( GL_TEXTURE_COORD_ARRAY );
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nkeynes@639 | 117 | glEnableClientState( GL_SECONDARY_COLOR_ARRAY );
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nkeynes@847 | 118 | glEnableClientState( GL_FOG_COORDINATE_ARRAY_EXT );
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nkeynes@639 | 119 |
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nkeynes@639 | 120 | glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
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nkeynes@639 | 121 | glClearDepth(0);
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nkeynes@639 | 122 | glClearStencil(0);
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nkeynes@1132 | 123 |
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nkeynes@1132 | 124 | glFogi(GL_FOG_COORDINATE_SOURCE_EXT, GL_FOG_COORDINATE_EXT);
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nkeynes@1132 | 125 | glFogi(GL_FOG_MODE, GL_LINEAR);
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nkeynes@1132 | 126 | glFogf(GL_FOG_START, 0.0);
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nkeynes@1132 | 127 | glFogf(GL_FOG_END, 1.0);
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nkeynes@639 | 128 | }
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nkeynes@639 | 129 |
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nkeynes@864 | 130 | /**
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nkeynes@864 | 131 | * Setup the basic context that's shared between normal and modified modes -
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nkeynes@864 | 132 | * depth, culling
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nkeynes@864 | 133 | */
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nkeynes@1137 | 134 | static void render_set_base_context( uint32_t poly1, gboolean set_depth )
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nkeynes@864 | 135 | {
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nkeynes@1137 | 136 | if( set_depth ) {
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nkeynes@865 | 137 | glDepthFunc( POLY1_DEPTH_MODE(poly1) );
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nkeynes@865 | 138 | }
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nkeynes@865 | 139 |
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nkeynes@864 | 140 | glDepthMask( POLY1_DEPTH_WRITE(poly1) ? GL_TRUE : GL_FALSE );
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nkeynes@865 | 141 | }
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nkeynes@864 | 142 |
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nkeynes@865 | 143 | /**
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nkeynes@865 | 144 | * Setup the texture/shading settings (TSP) which vary between mod/unmod modes.
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nkeynes@865 | 145 | */
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nkeynes@1137 | 146 | void render_set_tsp_context( uint32_t poly1, uint32_t poly2 )
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nkeynes@865 | 147 | {
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nkeynes@863 | 148 | glShadeModel( POLY1_SHADE_MODEL(poly1) );
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nkeynes@863 | 149 | if( POLY1_TEXTURED(poly1) ) {
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nkeynes@863 | 150 | glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, pvr2_poly_texblend[POLY2_TEX_BLEND(poly2)] );
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nkeynes@863 | 151 | }
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nkeynes@1132 | 152 |
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nkeynes@863 | 153 | switch( POLY2_FOG_MODE(poly2) ) {
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nkeynes@863 | 154 | case PVR2_POLY_FOG_LOOKUP:
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nkeynes@863 | 155 | glFogfv( GL_FOG_COLOR, pvr2_scene.fog_lut_colour );
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nkeynes@863 | 156 | break;
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nkeynes@863 | 157 | case PVR2_POLY_FOG_VERTEX:
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nkeynes@1132 | 158 | glFogfv( GL_FOG_COLOR, pvr2_scene.fog_vert_colour );
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nkeynes@1132 | 159 | break;
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nkeynes@863 | 160 | }
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nkeynes@653 | 161 |
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nkeynes@863 | 162 | int srcblend = POLY2_SRC_BLEND(poly2);
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nkeynes@863 | 163 | int destblend = POLY2_DEST_BLEND(poly2);
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nkeynes@863 | 164 | glBlendFunc( srcblend, destblend );
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nkeynes@863 | 165 |
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nkeynes@863 | 166 | if( POLY2_SRC_BLEND_TARGET(poly2) || POLY2_DEST_BLEND_TARGET(poly2) ) {
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nkeynes@863 | 167 | WARN( "Accumulation buffer not supported" );
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nkeynes@863 | 168 | }
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nkeynes@863 | 169 | }
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nkeynes@863 | 170 |
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nkeynes@645 | 171 | /**
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nkeynes@645 | 172 | * Setup the GL context for the supplied polygon context.
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nkeynes@645 | 173 | * @param context pointer to 3 or 5 words of polygon context
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nkeynes@865 | 174 | * @param depth_mode force depth mode, or 0 to use the polygon's
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nkeynes@865 | 175 | * depth mode.
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nkeynes@645 | 176 | */
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nkeynes@1137 | 177 | void render_set_context( uint32_t *context, gboolean set_depth )
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nkeynes@645 | 178 | {
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nkeynes@1137 | 179 | render_set_base_context(context[0], set_depth);
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nkeynes@1137 | 180 | render_set_tsp_context(context[0],context[1]);
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nkeynes@645 | 181 | }
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nkeynes@645 | 182 |
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nkeynes@1133 | 183 | static inline void gl_draw_vertexes( struct polygon_struct *poly )
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nkeynes@1133 | 184 | {
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nkeynes@1133 | 185 | do {
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nkeynes@1133 | 186 | glDrawArrays(GL_TRIANGLE_STRIP, poly->vertex_index, poly->vertex_count);
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nkeynes@1133 | 187 | poly = poly->sub_next;
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nkeynes@1133 | 188 | } while( poly != NULL );
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nkeynes@1133 | 189 | }
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nkeynes@1133 | 190 |
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nkeynes@1133 | 191 | static inline void gl_draw_mod_vertexes( struct polygon_struct *poly )
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nkeynes@1133 | 192 | {
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nkeynes@1133 | 193 | do {
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nkeynes@1133 | 194 | glDrawArrays(GL_TRIANGLE_STRIP, poly->mod_vertex_index, poly->vertex_count);
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nkeynes@1133 | 195 | poly = poly->sub_next;
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nkeynes@1133 | 196 | } while( poly != NULL );
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nkeynes@1133 | 197 | }
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nkeynes@645 | 198 |
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nkeynes@1137 | 199 | static void gl_render_poly( struct polygon_struct *poly, gboolean set_depth)
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nkeynes@639 | 200 | {
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nkeynes@1133 | 201 | if( poly->vertex_count == 0 )
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nkeynes@1133 | 202 | return; /* Culled */
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nkeynes@1133 | 203 |
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nkeynes@1138 | 204 | glBindTexture(GL_TEXTURE_2D, poly->tex_id);
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nkeynes@863 | 205 | if( poly->mod_vertex_index == -1 ) {
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nkeynes@1137 | 206 | render_set_context( poly->context, set_depth );
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nkeynes@1133 | 207 | gl_draw_vertexes(poly);
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nkeynes@864 | 208 | } else {
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nkeynes@864 | 209 | glEnable( GL_STENCIL_TEST );
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nkeynes@1137 | 210 | render_set_base_context( poly->context[0], set_depth );
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nkeynes@1137 | 211 | render_set_tsp_context( poly->context[0], poly->context[1] );
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nkeynes@864 | 212 | glStencilFunc(GL_EQUAL, 0, 2);
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nkeynes@1133 | 213 | gl_draw_vertexes(poly);
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nkeynes@863 | 214 |
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nkeynes@863 | 215 | if( pvr2_scene.shadow_mode == SHADOW_FULL ) {
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nkeynes@1138 | 216 | if( poly->mod_tex_id != poly->tex_id ) {
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nkeynes@863 | 217 | glBindTexture(GL_TEXTURE_2D, poly->mod_tex_id);
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nkeynes@863 | 218 | }
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nkeynes@1137 | 219 | render_set_tsp_context( poly->context[0], poly->context[3] );
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nkeynes@863 | 220 | }
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nkeynes@864 | 221 | glStencilFunc(GL_EQUAL, 2, 2);
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nkeynes@1133 | 222 | gl_draw_mod_vertexes(poly);
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nkeynes@1136 | 223 | glDisable( GL_STENCIL_TEST );
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nkeynes@863 | 224 | }
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nkeynes@639 | 225 | }
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nkeynes@639 | 226 |
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nkeynes@687 | 227 | static void gl_render_bkgnd( struct polygon_struct *poly )
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nkeynes@639 | 228 | {
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nkeynes@1138 | 229 | glBindTexture(GL_TEXTURE_2D, poly->tex_id);
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nkeynes@1137 | 230 | render_set_tsp_context( poly->context[0], poly->context[1] );
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nkeynes@687 | 231 | glDisable( GL_DEPTH_TEST );
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nkeynes@687 | 232 | glBlendFunc( GL_ONE, GL_ZERO );
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nkeynes@1133 | 233 | gl_draw_vertexes(poly);
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nkeynes@687 | 234 | glEnable( GL_DEPTH_TEST );
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nkeynes@687 | 235 | }
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nkeynes@687 | 236 |
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nkeynes@1137 | 237 | void gl_render_tilelist( pvraddr_t tile_entry, gboolean set_depth )
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nkeynes@653 | 238 | {
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nkeynes@934 | 239 | uint32_t *tile_list = (uint32_t *)(pvr2_main_ram+tile_entry);
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nkeynes@639 | 240 | int strip_count;
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nkeynes@639 | 241 | struct polygon_struct *poly;
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nkeynes@639 | 242 |
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nkeynes@863 | 243 | if( !IS_TILE_PTR(tile_entry) )
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nkeynes@863 | 244 | return;
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nkeynes@863 | 245 |
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nkeynes@639 | 246 | while(1) {
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nkeynes@736 | 247 | uint32_t entry = *tile_list++;
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nkeynes@736 | 248 | switch( entry >> 28 ) {
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nkeynes@736 | 249 | case 0x0F:
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nkeynes@736 | 250 | return; // End-of-list
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nkeynes@736 | 251 | case 0x0E:
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nkeynes@934 | 252 | tile_list = (uint32_t *)(pvr2_main_ram + (entry&0x007FFFFF));
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nkeynes@736 | 253 | break;
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nkeynes@736 | 254 | case 0x08: case 0x09: case 0x0A: case 0x0B:
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nkeynes@736 | 255 | strip_count = ((entry >> 25) & 0x0F)+1;
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nkeynes@736 | 256 | poly = pvr2_scene.buf_to_poly_map[entry&0x000FFFFF];
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nkeynes@736 | 257 | while( strip_count > 0 ) {
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nkeynes@736 | 258 | assert( poly != NULL );
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nkeynes@1137 | 259 | gl_render_poly( poly, set_depth );
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nkeynes@736 | 260 | poly = poly->next;
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nkeynes@736 | 261 | strip_count--;
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nkeynes@736 | 262 | }
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nkeynes@736 | 263 | break;
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nkeynes@736 | 264 | default:
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nkeynes@736 | 265 | if( entry & 0x7E000000 ) {
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nkeynes@736 | 266 | poly = pvr2_scene.buf_to_poly_map[entry&0x000FFFFF];
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nkeynes@1137 | 267 | gl_render_poly( poly, set_depth );
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nkeynes@736 | 268 | }
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nkeynes@736 | 269 | }
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nkeynes@863 | 270 | }
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nkeynes@863 | 271 | }
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nkeynes@863 | 272 |
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nkeynes@863 | 273 | /**
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nkeynes@863 | 274 | * Render the tilelist with depthbuffer updates only.
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nkeynes@863 | 275 | */
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nkeynes@863 | 276 | void gl_render_tilelist_depthonly( pvraddr_t tile_entry )
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nkeynes@863 | 277 | {
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nkeynes@934 | 278 | uint32_t *tile_list = (uint32_t *)(pvr2_main_ram+tile_entry);
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nkeynes@863 | 279 | int strip_count;
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nkeynes@863 | 280 | struct polygon_struct *poly;
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nkeynes@863 | 281 |
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nkeynes@863 | 282 | if( !IS_TILE_PTR(tile_entry) )
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nkeynes@863 | 283 | return;
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nkeynes@863 | 284 |
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nkeynes@863 | 285 | while(1) {
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nkeynes@863 | 286 | uint32_t entry = *tile_list++;
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nkeynes@863 | 287 | switch( entry >> 28 ) {
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nkeynes@863 | 288 | case 0x0F:
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nkeynes@863 | 289 | return; // End-of-list
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nkeynes@863 | 290 | case 0x0E:
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nkeynes@934 | 291 | tile_list = (uint32_t *)(pvr2_main_ram + (entry&0x007FFFFF));
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nkeynes@863 | 292 | break;
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nkeynes@863 | 293 | case 0x08: case 0x09: case 0x0A: case 0x0B:
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nkeynes@863 | 294 | strip_count = ((entry >> 25) & 0x0F)+1;
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nkeynes@863 | 295 | poly = pvr2_scene.buf_to_poly_map[entry&0x000FFFFF];
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nkeynes@863 | 296 | while( strip_count > 0 ) {
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nkeynes@1133 | 297 | if( poly->vertex_count != 0 ) {
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nkeynes@1137 | 298 | render_set_base_context(poly->context[0],TRUE);
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nkeynes@1133 | 299 | gl_draw_vertexes(poly);
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nkeynes@1133 | 300 | }
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nkeynes@863 | 301 | poly = poly->next;
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nkeynes@863 | 302 | strip_count--;
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nkeynes@863 | 303 | }
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nkeynes@863 | 304 | break;
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nkeynes@863 | 305 | default:
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nkeynes@863 | 306 | if( entry & 0x7E000000 ) {
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nkeynes@863 | 307 | poly = pvr2_scene.buf_to_poly_map[entry&0x000FFFFF];
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nkeynes@1133 | 308 | if( poly->vertex_count != 0 ) {
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nkeynes@1137 | 309 | render_set_base_context(poly->context[0],TRUE);
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nkeynes@1133 | 310 | gl_draw_vertexes(poly);
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nkeynes@1133 | 311 | }
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nkeynes@863 | 312 | }
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nkeynes@863 | 313 | }
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nkeynes@863 | 314 | }
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nkeynes@863 | 315 | }
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nkeynes@863 | 316 |
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nkeynes@864 | 317 | static void drawrect2d( uint32_t tile_bounds[], float z )
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nkeynes@864 | 318 | {
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nkeynes@864 | 319 | glBegin( GL_QUADS );
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nkeynes@864 | 320 | glVertex3f( tile_bounds[0], tile_bounds[2], z );
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nkeynes@864 | 321 | glVertex3f( tile_bounds[1], tile_bounds[2], z );
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nkeynes@864 | 322 | glVertex3f( tile_bounds[1], tile_bounds[3], z );
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nkeynes@864 | 323 | glVertex3f( tile_bounds[0], tile_bounds[3], z );
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nkeynes@864 | 324 | glEnd();
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nkeynes@864 | 325 | }
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nkeynes@864 | 326 |
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nkeynes@864 | 327 | void gl_render_modifier_polygon( struct polygon_struct *poly, uint32_t tile_bounds[] )
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nkeynes@864 | 328 | {
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nkeynes@864 | 329 | /* A bit of explanation:
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nkeynes@864 | 330 | * In theory it works like this: generate a 1-bit stencil for each polygon
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nkeynes@864 | 331 | * volume, and then AND or OR it against the overall 1-bit tile stencil at
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nkeynes@864 | 332 | * the end of the volume.
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nkeynes@864 | 333 | *
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nkeynes@864 | 334 | * The implementation here uses a 2-bit stencil buffer, where each volume
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nkeynes@864 | 335 | * is drawn using only stencil bit 0, and then a 'flush' polygon is drawn
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nkeynes@864 | 336 | * to update bit 1 accordingly and clear bit 0.
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nkeynes@864 | 337 | *
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nkeynes@864 | 338 | * This could probably be more efficient, but at least it works correctly
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nkeynes@864 | 339 | * now :)
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nkeynes@864 | 340 | */
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nkeynes@864 | 341 |
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nkeynes@1133 | 342 | if( poly->vertex_count == 0 )
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nkeynes@1133 | 343 | return; /* Culled */
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nkeynes@1133 | 344 |
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nkeynes@1133 | 345 | gl_draw_vertexes(poly);
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nkeynes@1133 | 346 |
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nkeynes@1133 | 347 |
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nkeynes@864 | 348 |
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nkeynes@864 | 349 | int poly_type = POLY1_VOLUME_MODE(poly->context[0]);
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nkeynes@864 | 350 | if( poly_type == PVR2_VOLUME_REGION0 ) {
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nkeynes@864 | 351 | /* 00 => 00
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nkeynes@864 | 352 | * 01 => 00
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nkeynes@864 | 353 | * 10 => 10
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nkeynes@864 | 354 | * 11 => 00
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nkeynes@864 | 355 | */
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nkeynes@864 | 356 | glStencilMask( 0x03 );
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nkeynes@864 | 357 | glStencilFunc(GL_EQUAL, 0x02, 0x03);
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nkeynes@864 | 358 | glStencilOp(GL_ZERO, GL_KEEP, GL_KEEP);
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nkeynes@864 | 359 | glDisable( GL_DEPTH_TEST );
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nkeynes@864 | 360 |
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nkeynes@864 | 361 | drawrect2d( tile_bounds, pvr2_scene.bounds[4] );
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nkeynes@864 | 362 |
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nkeynes@864 | 363 | glEnable( GL_DEPTH_TEST );
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nkeynes@864 | 364 | glStencilMask( 0x01 );
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nkeynes@864 | 365 | glStencilFunc( GL_ALWAYS, 0, 1 );
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nkeynes@864 | 366 | glStencilOp( GL_KEEP,GL_INVERT, GL_KEEP );
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nkeynes@864 | 367 | } else if( poly_type == PVR2_VOLUME_REGION1 ) {
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nkeynes@864 | 368 | /* This is harder with the standard stencil ops - do it in two passes
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nkeynes@864 | 369 | * 00 => 00 | 00 => 10
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nkeynes@864 | 370 | * 01 => 10 | 01 => 10
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nkeynes@864 | 371 | * 10 => 10 | 10 => 00
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nkeynes@864 | 372 | * 11 => 10 | 11 => 10
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nkeynes@864 | 373 | */
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nkeynes@864 | 374 | glStencilMask( 0x02 );
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nkeynes@864 | 375 | glStencilOp( GL_INVERT, GL_INVERT, GL_INVERT );
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nkeynes@864 | 376 | glDisable( GL_DEPTH_TEST );
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nkeynes@864 | 377 |
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nkeynes@864 | 378 | drawrect2d( tile_bounds, pvr2_scene.bounds[4] );
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nkeynes@864 | 379 |
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nkeynes@864 | 380 | glStencilMask( 0x03 );
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nkeynes@864 | 381 | glStencilFunc( GL_NOTEQUAL,0x02, 0x03);
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nkeynes@864 | 382 | glStencilOp( GL_ZERO, GL_REPLACE, GL_REPLACE );
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nkeynes@864 | 383 |
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nkeynes@864 | 384 | drawrect2d( tile_bounds, pvr2_scene.bounds[4] );
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nkeynes@864 | 385 |
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nkeynes@864 | 386 | glEnable( GL_DEPTH_TEST );
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nkeynes@864 | 387 | glStencilMask( 0x01 );
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nkeynes@864 | 388 | glStencilFunc( GL_ALWAYS, 0, 1 );
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nkeynes@864 | 389 | glStencilOp( GL_KEEP,GL_INVERT, GL_KEEP );
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nkeynes@864 | 390 | }
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nkeynes@864 | 391 | }
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nkeynes@864 | 392 |
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nkeynes@864 | 393 | void gl_render_modifier_tilelist( pvraddr_t tile_entry, uint32_t tile_bounds[] )
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nkeynes@863 | 394 | {
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nkeynes@934 | 395 | uint32_t *tile_list = (uint32_t *)(pvr2_main_ram+tile_entry);
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nkeynes@863 | 396 | int strip_count;
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nkeynes@863 | 397 | struct polygon_struct *poly;
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nkeynes@863 | 398 |
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nkeynes@863 | 399 | if( !IS_TILE_PTR(tile_entry) )
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nkeynes@863 | 400 | return;
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nkeynes@863 | 401 |
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nkeynes@863 | 402 | glEnable( GL_STENCIL_TEST );
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nkeynes@863 | 403 | glEnable( GL_DEPTH_TEST );
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nkeynes@863 | 404 | glDepthFunc( GL_LEQUAL );
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nkeynes@863 | 405 |
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nkeynes@863 | 406 | glStencilFunc( GL_ALWAYS, 0, 1 );
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nkeynes@863 | 407 | glStencilOp( GL_KEEP,GL_INVERT, GL_KEEP );
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nkeynes@864 | 408 | glStencilMask( 0x01 );
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nkeynes@863 | 409 | glDepthMask( GL_FALSE );
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nkeynes@863 | 410 |
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nkeynes@863 | 411 | while(1) {
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nkeynes@863 | 412 | uint32_t entry = *tile_list++;
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nkeynes@863 | 413 | switch( entry >> 28 ) {
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nkeynes@863 | 414 | case 0x0F:
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nkeynes@863 | 415 | glDepthMask( GL_TRUE );
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nkeynes@863 | 416 | glStencilOp( GL_KEEP, GL_KEEP, GL_KEEP );
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nkeynes@1136 | 417 | glDisable( GL_STENCIL_TEST );
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nkeynes@863 | 418 | return; // End-of-list
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nkeynes@863 | 419 | case 0x0E:
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nkeynes@934 | 420 | tile_list = (uint32_t *)(pvr2_main_ram + (entry&0x007FFFFF));
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nkeynes@863 | 421 | break;
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nkeynes@863 | 422 | case 0x08: case 0x09: case 0x0A: case 0x0B:
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nkeynes@863 | 423 | strip_count = ((entry >> 25) & 0x0F)+1;
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nkeynes@863 | 424 | poly = pvr2_scene.buf_to_poly_map[entry&0x000FFFFF];
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nkeynes@863 | 425 | while( strip_count > 0 ) {
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nkeynes@864 | 426 | gl_render_modifier_polygon( poly, tile_bounds );
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nkeynes@863 | 427 | poly = poly->next;
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nkeynes@863 | 428 | strip_count--;
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nkeynes@863 | 429 | }
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nkeynes@863 | 430 | break;
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nkeynes@863 | 431 | default:
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nkeynes@863 | 432 | if( entry & 0x7E000000 ) {
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nkeynes@863 | 433 | poly = pvr2_scene.buf_to_poly_map[entry&0x000FFFFF];
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nkeynes@864 | 434 | gl_render_modifier_polygon( poly, tile_bounds );
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nkeynes@863 | 435 | }
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nkeynes@863 | 436 | }
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nkeynes@863 | 437 | }
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nkeynes@863 | 438 |
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nkeynes@639 | 439 | }
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nkeynes@639 | 440 |
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nkeynes@639 | 441 |
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nkeynes@639 | 442 | /**
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nkeynes@639 | 443 | * Render the currently defined scene in pvr2_scene
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nkeynes@639 | 444 | */
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nkeynes@639 | 445 | void pvr2_scene_render( render_buffer_t buffer )
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nkeynes@639 | 446 | {
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nkeynes@639 | 447 | /* Scene setup */
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nkeynes@645 | 448 | struct timeval start_tv, tex_tv, end_tv;
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nkeynes@645 | 449 |
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nkeynes@645 | 450 | gettimeofday(&start_tv, NULL);
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nkeynes@639 | 451 | display_driver->set_render_target(buffer);
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nkeynes@639 | 452 | pvr2_check_palette_changed();
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nkeynes@645 | 453 | pvr2_scene_load_textures();
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nkeynes@736 | 454 |
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nkeynes@645 | 455 | gettimeofday( &tex_tv, NULL );
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nkeynes@645 | 456 | uint32_t ms = (tex_tv.tv_sec - start_tv.tv_sec) * 1000 +
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nkeynes@736 | 457 | (tex_tv.tv_usec - start_tv.tv_usec)/1000;
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nkeynes@645 | 458 | DEBUG( "Scene setup in %dms", ms );
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nkeynes@639 | 459 |
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nkeynes@639 | 460 | /* Setup view projection matrix */
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nkeynes@639 | 461 | glMatrixMode(GL_PROJECTION);
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nkeynes@639 | 462 | glLoadIdentity();
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nkeynes@639 | 463 | float nearz = pvr2_scene.bounds[4];
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nkeynes@639 | 464 | float farz = pvr2_scene.bounds[5];
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nkeynes@639 | 465 | if( nearz == farz ) {
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nkeynes@687 | 466 | farz*= 4.0;
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nkeynes@639 | 467 | }
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nkeynes@639 | 468 | glOrtho( 0, pvr2_scene.buffer_width, pvr2_scene.buffer_height, 0,
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nkeynes@736 | 469 | -farz, -nearz );
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nkeynes@649 | 470 | float alphaRef = ((float)(MMIO_READ(PVR2, RENDER_ALPHA_REF)&0xFF)+1)/256.0;
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nkeynes@649 | 471 | glAlphaFunc( GL_GEQUAL, alphaRef );
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nkeynes@639 | 472 |
|
nkeynes@639 | 473 | /* Clear the buffer (FIXME: May not want always want to do this) */
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nkeynes@639 | 474 | glDisable( GL_SCISSOR_TEST );
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nkeynes@651 | 475 | glDepthMask( GL_TRUE );
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nkeynes@864 | 476 | glStencilMask( 0x03 );
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nkeynes@639 | 477 | glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT );
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nkeynes@639 | 478 |
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nkeynes@639 | 479 | /* Setup vertex array pointers */
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nkeynes@687 | 480 | glVertexPointer(3, GL_FLOAT, sizeof(struct vertex_struct), &pvr2_scene.vertex_array[0].x);
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nkeynes@687 | 481 | glColorPointer(4, GL_FLOAT, sizeof(struct vertex_struct), &pvr2_scene.vertex_array[0].rgba[0]);
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nkeynes@687 | 482 | glTexCoordPointer(2, GL_FLOAT, sizeof(struct vertex_struct), &pvr2_scene.vertex_array[0].u);
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nkeynes@687 | 483 | glSecondaryColorPointerEXT(3, GL_FLOAT, sizeof(struct vertex_struct), pvr2_scene.vertex_array[0].offset_rgba );
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nkeynes@847 | 484 | glFogCoordPointerEXT(GL_FLOAT, sizeof(struct vertex_struct), &pvr2_scene.vertex_array[0].offset_rgba[3] );
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nkeynes@669 | 485 | /* Turn on the shaders (if available) */
|
nkeynes@1130 | 486 | glsl_set_shader(DEFAULT_PROGRAM);
|
nkeynes@639 | 487 |
|
nkeynes@687 | 488 | /* Render the background */
|
nkeynes@687 | 489 | gl_render_bkgnd( pvr2_scene.bkgnd_poly );
|
nkeynes@736 | 490 |
|
nkeynes@639 | 491 | glEnable( GL_SCISSOR_TEST );
|
nkeynes@1132 | 492 | glEnable( GL_COLOR_SUM );
|
nkeynes@1132 | 493 | glEnable( GL_FOG );
|
nkeynes@1138 | 494 | glEnable( GL_TEXTURE_2D );
|
nkeynes@639 | 495 |
|
nkeynes@639 | 496 | /* Process the segment list */
|
nkeynes@639 | 497 | struct tile_segment *segment = pvr2_scene.segment_list;
|
nkeynes@639 | 498 | do {
|
nkeynes@736 | 499 | int tilex = SEGMENT_X(segment->control);
|
nkeynes@736 | 500 | int tiley = SEGMENT_Y(segment->control);
|
nkeynes@639 | 501 |
|
nkeynes@736 | 502 | uint32_t tile_bounds[4] = { tilex << 5, (tilex+1)<<5, tiley<<5, (tiley+1)<<5 };
|
nkeynes@736 | 503 | if( !clip_tile_bounds(tile_bounds, pvr2_scene.bounds) ) {
|
nkeynes@736 | 504 | continue; // fully clipped, skip tile
|
nkeynes@736 | 505 | }
|
nkeynes@736 | 506 |
|
nkeynes@736 | 507 | /* Clip to the visible part of the tile */
|
nkeynes@736 | 508 | glScissor( tile_bounds[0], pvr2_scene.buffer_height-tile_bounds[3],
|
nkeynes@736 | 509 | tile_bounds[1]-tile_bounds[0], tile_bounds[3] - tile_bounds[2] );
|
nkeynes@864 | 510 | if( display_driver->capabilities.stencil_bits >= 2 &&
|
nkeynes@863 | 511 | IS_TILE_PTR(segment->opaquemod_ptr) &&
|
nkeynes@863 | 512 | !IS_EMPTY_TILE_LIST(segment->opaquemod_ptr) ) {
|
nkeynes@863 | 513 | /* Don't do this unless there's actually some shadow polygons */
|
nkeynes@863 | 514 |
|
nkeynes@863 | 515 | /* Use colormask instead of drawbuffer for simplicity */
|
nkeynes@863 | 516 | glColorMask( GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE );
|
nkeynes@863 | 517 | gl_render_tilelist_depthonly(segment->opaque_ptr);
|
nkeynes@864 | 518 | gl_render_modifier_tilelist(segment->opaquemod_ptr, tile_bounds);
|
nkeynes@863 | 519 | glClear( GL_DEPTH_BUFFER_BIT );
|
nkeynes@863 | 520 | glColorMask( GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE );
|
nkeynes@736 | 521 | }
|
nkeynes@1137 | 522 | gl_render_tilelist(segment->opaque_ptr,TRUE);
|
nkeynes@863 | 523 | if( IS_TILE_PTR(segment->punchout_ptr) ) {
|
nkeynes@863 | 524 | glEnable(GL_ALPHA_TEST );
|
nkeynes@1137 | 525 | glDepthFunc(GL_GEQUAL);
|
nkeynes@1137 | 526 | gl_render_tilelist(segment->punchout_ptr, FALSE );
|
nkeynes@863 | 527 | glDisable(GL_ALPHA_TEST );
|
nkeynes@863 | 528 | }
|
nkeynes@1133 | 529 |
|
nkeynes@736 | 530 | if( IS_TILE_PTR(segment->trans_ptr) ) {
|
nkeynes@736 | 531 | if( pvr2_scene.sort_mode == SORT_NEVER ||
|
nkeynes@736 | 532 | (pvr2_scene.sort_mode == SORT_TILEFLAG && (segment->control&SEGMENT_SORT_TRANS))) {
|
nkeynes@1137 | 533 | gl_render_tilelist(segment->trans_ptr, TRUE);
|
nkeynes@736 | 534 | } else {
|
nkeynes@736 | 535 | render_autosort_tile(segment->trans_ptr, RENDER_NORMAL );
|
nkeynes@736 | 536 | }
|
nkeynes@736 | 537 | }
|
nkeynes@639 | 538 | } while( !IS_LAST_SEGMENT(segment++) );
|
nkeynes@639 | 539 | glDisable( GL_SCISSOR_TEST );
|
nkeynes@1132 | 540 | glDisable( GL_COLOR_SUM );
|
nkeynes@1132 | 541 | glDisable( GL_FOG );
|
nkeynes@1130 | 542 | glsl_clear_shader();
|
nkeynes@669 | 543 |
|
nkeynes@645 | 544 | gettimeofday( &end_tv, NULL );
|
nkeynes@645 | 545 | ms = (end_tv.tv_sec - tex_tv.tv_sec) * 1000 +
|
nkeynes@736 | 546 | (end_tv.tv_usec - tex_tv.tv_usec)/1000;
|
nkeynes@645 | 547 | DEBUG( "Scene render in %dms", ms );
|
nkeynes@639 | 548 | }
|