filename | src/pvr2/glrender.c |
changeset | 649:620c5c6496b5 |
prev | 648:ef9aa5cba86f |
next | 651:95a9cf98785b |
author | nkeynes |
date | Tue Mar 11 08:50:16 2008 +0000 (16 years ago) |
branch | lxdream-render |
permissions | -rw-r--r-- |
last change | Use maxz rather than minz for tri sorting (better results atm) Change depth-test-disable to depth-mask (more correct) Implement alpha test for punchthru polys |
file | annotate | diff | log | raw |
nkeynes@639 | 1 | /** |
nkeynes@639 | 2 | * $Id$ |
nkeynes@639 | 3 | * |
nkeynes@639 | 4 | * Standard OpenGL rendering engine. |
nkeynes@639 | 5 | * |
nkeynes@639 | 6 | * Copyright (c) 2005 Nathan Keynes. |
nkeynes@639 | 7 | * |
nkeynes@639 | 8 | * This program is free software; you can redistribute it and/or modify |
nkeynes@639 | 9 | * it under the terms of the GNU General Public License as published by |
nkeynes@639 | 10 | * the Free Software Foundation; either version 2 of the License, or |
nkeynes@639 | 11 | * (at your option) any later version. |
nkeynes@639 | 12 | * |
nkeynes@639 | 13 | * This program is distributed in the hope that it will be useful, |
nkeynes@639 | 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
nkeynes@639 | 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
nkeynes@639 | 16 | * GNU General Public License for more details. |
nkeynes@639 | 17 | */ |
nkeynes@639 | 18 | |
nkeynes@645 | 19 | #include <assert.h> |
nkeynes@639 | 20 | #include "display.h" |
nkeynes@639 | 21 | #include "pvr2/pvr2.h" |
nkeynes@639 | 22 | #include "pvr2/scene.h" |
nkeynes@639 | 23 | |
nkeynes@645 | 24 | int pvr2_poly_depthmode[8] = { GL_NEVER, GL_LESS, GL_EQUAL, GL_LEQUAL, |
nkeynes@645 | 25 | GL_GREATER, GL_NOTEQUAL, GL_GEQUAL, |
nkeynes@645 | 26 | GL_ALWAYS }; |
nkeynes@645 | 27 | int pvr2_poly_srcblend[8] = { |
nkeynes@645 | 28 | GL_ZERO, GL_ONE, GL_DST_COLOR, GL_ONE_MINUS_DST_COLOR, |
nkeynes@645 | 29 | GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_DST_ALPHA, |
nkeynes@645 | 30 | GL_ONE_MINUS_DST_ALPHA }; |
nkeynes@645 | 31 | int pvr2_poly_dstblend[8] = { |
nkeynes@645 | 32 | GL_ZERO, GL_ONE, GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, |
nkeynes@645 | 33 | GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_DST_ALPHA, |
nkeynes@645 | 34 | GL_ONE_MINUS_DST_ALPHA }; |
nkeynes@645 | 35 | int pvr2_poly_texblend[4] = { |
nkeynes@645 | 36 | GL_REPLACE, |
nkeynes@645 | 37 | GL_MODULATE, |
nkeynes@645 | 38 | GL_DECAL, |
nkeynes@645 | 39 | GL_MODULATE |
nkeynes@645 | 40 | }; |
nkeynes@645 | 41 | int pvr2_render_colour_format[8] = { |
nkeynes@645 | 42 | COLFMT_BGRA1555, COLFMT_RGB565, COLFMT_BGRA4444, COLFMT_BGRA1555, |
nkeynes@645 | 43 | COLFMT_BGR888, COLFMT_BGRA8888, COLFMT_BGRA8888, COLFMT_BGRA4444 }; |
nkeynes@645 | 44 | |
nkeynes@645 | 45 | |
nkeynes@639 | 46 | /** |
nkeynes@639 | 47 | * Clip the tile bounds to the clipping plane. |
nkeynes@639 | 48 | * @return TRUE if the tile was not clipped completely. |
nkeynes@639 | 49 | */ |
nkeynes@639 | 50 | static gboolean clip_tile_bounds( uint32_t *tile, float *clip ) |
nkeynes@639 | 51 | { |
nkeynes@639 | 52 | if( tile[0] < clip[0] ) tile[0] = clip[0]; |
nkeynes@639 | 53 | if( tile[1] > clip[1] ) tile[1] = clip[1]; |
nkeynes@639 | 54 | if( tile[2] < clip[2] ) tile[2] = clip[2]; |
nkeynes@639 | 55 | if( tile[3] > clip[3] ) tile[3] = clip[3]; |
nkeynes@639 | 56 | return tile[0] < tile[1] && tile[2] < tile[3]; |
nkeynes@639 | 57 | } |
nkeynes@639 | 58 | |
nkeynes@645 | 59 | void pvr2_scene_load_textures() |
nkeynes@645 | 60 | { |
nkeynes@645 | 61 | int i; |
nkeynes@645 | 62 | for( i=0; i < pvr2_scene.poly_count; i++ ) { |
nkeynes@645 | 63 | struct polygon_struct *poly = &pvr2_scene.poly_array[i]; |
nkeynes@645 | 64 | if( POLY1_TEXTURED(poly->context[0]) ) { |
nkeynes@645 | 65 | poly->tex_id = texcache_get_texture( poly->context[2], |
nkeynes@645 | 66 | POLY2_TEX_WIDTH(poly->context[1]), |
nkeynes@645 | 67 | POLY2_TEX_HEIGHT(poly->context[1]) ); |
nkeynes@645 | 68 | if( poly->mod_vertex_index != -1 ) { |
nkeynes@645 | 69 | poly->mod_tex_id = texcache_get_texture( poly->context[4], |
nkeynes@645 | 70 | POLY2_TEX_WIDTH(poly->context[3]), |
nkeynes@645 | 71 | POLY2_TEX_HEIGHT(poly->context[3]) ); |
nkeynes@645 | 72 | } |
nkeynes@645 | 73 | } else { |
nkeynes@645 | 74 | poly->tex_id = -1; |
nkeynes@645 | 75 | poly->mod_tex_id = -1; |
nkeynes@645 | 76 | } |
nkeynes@645 | 77 | } |
nkeynes@645 | 78 | } |
nkeynes@645 | 79 | |
nkeynes@645 | 80 | |
nkeynes@645 | 81 | |
nkeynes@639 | 82 | /** |
nkeynes@639 | 83 | * Once-off call to setup the OpenGL context. |
nkeynes@639 | 84 | */ |
nkeynes@639 | 85 | void pvr2_setup_gl_context() |
nkeynes@639 | 86 | { |
nkeynes@639 | 87 | texcache_gl_init(); // Allocate texture IDs |
nkeynes@639 | 88 | glCullFace( GL_BACK ); |
nkeynes@639 | 89 | glEnable( GL_BLEND ); |
nkeynes@649 | 90 | glEnable( GL_DEPTH_TEST ); |
nkeynes@639 | 91 | glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST); |
nkeynes@639 | 92 | glMatrixMode(GL_MODELVIEW); |
nkeynes@639 | 93 | glLoadIdentity(); |
nkeynes@639 | 94 | |
nkeynes@639 | 95 | glEnableClientState( GL_COLOR_ARRAY ); |
nkeynes@639 | 96 | glEnableClientState( GL_VERTEX_ARRAY ); |
nkeynes@639 | 97 | glEnableClientState( GL_TEXTURE_COORD_ARRAY ); |
nkeynes@639 | 98 | glEnableClientState( GL_SECONDARY_COLOR_ARRAY ); |
nkeynes@639 | 99 | |
nkeynes@639 | 100 | glClearColor(0.0f, 0.0f, 0.0f, 0.0f); |
nkeynes@639 | 101 | glClearDepth(0); |
nkeynes@639 | 102 | glClearStencil(0); |
nkeynes@639 | 103 | } |
nkeynes@639 | 104 | |
nkeynes@645 | 105 | /** |
nkeynes@645 | 106 | * Setup the GL context for the supplied polygon context. |
nkeynes@645 | 107 | * @param context pointer to 3 or 5 words of polygon context |
nkeynes@645 | 108 | * @param modified boolean flag indicating that the modified |
nkeynes@645 | 109 | * version should be used, rather than the normal version. |
nkeynes@645 | 110 | */ |
nkeynes@645 | 111 | void render_set_context( uint32_t *context, int render_mode ) |
nkeynes@645 | 112 | { |
nkeynes@645 | 113 | uint32_t poly1 = context[0], poly2, texture; |
nkeynes@645 | 114 | if( render_mode == RENDER_FULLMOD ) { |
nkeynes@645 | 115 | poly2 = context[3]; |
nkeynes@645 | 116 | texture = context[4]; |
nkeynes@645 | 117 | } else { |
nkeynes@645 | 118 | poly2 = context[1]; |
nkeynes@645 | 119 | texture = context[2]; |
nkeynes@645 | 120 | } |
nkeynes@645 | 121 | |
nkeynes@649 | 122 | glDepthFunc( POLY1_DEPTH_MODE(poly1) ); |
nkeynes@649 | 123 | glDepthMask( POLY1_DEPTH_WRITE(poly1) ? GL_TRUE : GL_FALSE ); |
nkeynes@645 | 124 | |
nkeynes@645 | 125 | switch( POLY1_CULL_MODE(poly1) ) { |
nkeynes@645 | 126 | case CULL_NONE: |
nkeynes@645 | 127 | case CULL_SMALL: |
nkeynes@645 | 128 | glDisable( GL_CULL_FACE ); |
nkeynes@645 | 129 | break; |
nkeynes@645 | 130 | case CULL_CCW: |
nkeynes@645 | 131 | glEnable( GL_CULL_FACE ); |
nkeynes@645 | 132 | glFrontFace( GL_CW ); |
nkeynes@645 | 133 | break; |
nkeynes@645 | 134 | case CULL_CW: |
nkeynes@645 | 135 | glEnable( GL_CULL_FACE ); |
nkeynes@645 | 136 | glFrontFace( GL_CCW ); |
nkeynes@645 | 137 | break; |
nkeynes@645 | 138 | } |
nkeynes@645 | 139 | |
nkeynes@645 | 140 | if( POLY1_SPECULAR(poly1) ) { |
nkeynes@645 | 141 | glEnable(GL_COLOR_SUM); |
nkeynes@645 | 142 | } else { |
nkeynes@645 | 143 | glDisable(GL_COLOR_SUM); |
nkeynes@645 | 144 | } |
nkeynes@645 | 145 | |
nkeynes@645 | 146 | |
nkeynes@645 | 147 | if( POLY1_TEXTURED(poly1) ) { |
nkeynes@645 | 148 | int width = POLY2_TEX_WIDTH(poly2); |
nkeynes@645 | 149 | int height = POLY2_TEX_HEIGHT(poly2); |
nkeynes@645 | 150 | glEnable(GL_TEXTURE_2D); |
nkeynes@648 | 151 | glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, pvr2_poly_texblend[POLY2_TEX_BLEND(poly2)] ); |
nkeynes@645 | 152 | if( POLY2_TEX_CLAMP_U(poly2) ) { |
nkeynes@645 | 153 | glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP ); |
nkeynes@645 | 154 | } else { |
nkeynes@645 | 155 | glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT ); |
nkeynes@645 | 156 | } |
nkeynes@645 | 157 | if( POLY2_TEX_CLAMP_V(poly2) ) { |
nkeynes@645 | 158 | glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP ); |
nkeynes@645 | 159 | } else { |
nkeynes@645 | 160 | glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT ); |
nkeynes@645 | 161 | } |
nkeynes@645 | 162 | } else { |
nkeynes@645 | 163 | glDisable( GL_TEXTURE_2D ); |
nkeynes@645 | 164 | } |
nkeynes@645 | 165 | |
nkeynes@645 | 166 | glShadeModel( POLY1_SHADE_MODEL(poly1) ); |
nkeynes@645 | 167 | |
nkeynes@645 | 168 | int srcblend = POLY2_SRC_BLEND(poly2); |
nkeynes@645 | 169 | int destblend = POLY2_DEST_BLEND(poly2); |
nkeynes@645 | 170 | glBlendFunc( srcblend, destblend ); |
nkeynes@645 | 171 | |
nkeynes@645 | 172 | if( POLY2_SRC_BLEND_TARGET(poly2) || POLY2_DEST_BLEND_TARGET(poly2) ) { |
nkeynes@645 | 173 | ERROR( "Accumulation buffer not supported" ); |
nkeynes@645 | 174 | } |
nkeynes@645 | 175 | |
nkeynes@645 | 176 | } |
nkeynes@645 | 177 | |
nkeynes@645 | 178 | |
nkeynes@639 | 179 | static void gl_render_poly( struct polygon_struct *poly ) |
nkeynes@639 | 180 | { |
nkeynes@645 | 181 | if( poly->tex_id != -1 ) { |
nkeynes@645 | 182 | glBindTexture(GL_TEXTURE_2D, poly->tex_id); |
nkeynes@645 | 183 | } |
nkeynes@639 | 184 | render_set_context( poly->context, RENDER_NORMAL ); |
nkeynes@639 | 185 | glDrawArrays(GL_TRIANGLE_STRIP, poly->vertex_index, poly->vertex_count ); |
nkeynes@639 | 186 | } |
nkeynes@639 | 187 | |
nkeynes@645 | 188 | void gl_render_tilelist( pvraddr_t tile_entry ) |
nkeynes@639 | 189 | { |
nkeynes@639 | 190 | uint32_t *tile_list = (uint32_t *)(video_base+tile_entry); |
nkeynes@639 | 191 | int strip_count; |
nkeynes@639 | 192 | struct polygon_struct *poly; |
nkeynes@639 | 193 | |
nkeynes@639 | 194 | while(1) { |
nkeynes@639 | 195 | uint32_t entry = *tile_list++; |
nkeynes@639 | 196 | switch( entry >> 28 ) { |
nkeynes@639 | 197 | case 0x0F: |
nkeynes@639 | 198 | return; // End-of-list |
nkeynes@639 | 199 | case 0x0E: |
nkeynes@639 | 200 | tile_list = (uint32_t *)(video_base + (entry&0x007FFFFF)); |
nkeynes@639 | 201 | break; |
nkeynes@645 | 202 | case 0x08: case 0x09: case 0x0A: case 0x0B: |
nkeynes@639 | 203 | strip_count = ((entry >> 25) & 0x0F)+1; |
nkeynes@639 | 204 | poly = pvr2_scene.buf_to_poly_map[entry&0x000FFFFF]; |
nkeynes@639 | 205 | while( strip_count > 0 ) { |
nkeynes@645 | 206 | assert( poly != NULL ); |
nkeynes@639 | 207 | gl_render_poly( poly ); |
nkeynes@639 | 208 | poly = poly->next; |
nkeynes@639 | 209 | strip_count--; |
nkeynes@639 | 210 | } |
nkeynes@639 | 211 | break; |
nkeynes@639 | 212 | default: |
nkeynes@645 | 213 | if( entry & 0x7E000000 ) { |
nkeynes@645 | 214 | poly = pvr2_scene.buf_to_poly_map[entry&0x000FFFFF]; |
nkeynes@645 | 215 | gl_render_poly( poly ); |
nkeynes@645 | 216 | } |
nkeynes@639 | 217 | } |
nkeynes@639 | 218 | } |
nkeynes@639 | 219 | } |
nkeynes@639 | 220 | |
nkeynes@639 | 221 | |
nkeynes@639 | 222 | /** |
nkeynes@639 | 223 | * Render the currently defined scene in pvr2_scene |
nkeynes@639 | 224 | */ |
nkeynes@639 | 225 | void pvr2_scene_render( render_buffer_t buffer ) |
nkeynes@639 | 226 | { |
nkeynes@639 | 227 | /* Scene setup */ |
nkeynes@645 | 228 | struct timeval start_tv, tex_tv, end_tv; |
nkeynes@645 | 229 | |
nkeynes@645 | 230 | gettimeofday(&start_tv, NULL); |
nkeynes@639 | 231 | display_driver->set_render_target(buffer); |
nkeynes@639 | 232 | pvr2_check_palette_changed(); |
nkeynes@645 | 233 | pvr2_scene_load_textures(); |
nkeynes@645 | 234 | |
nkeynes@645 | 235 | gettimeofday( &tex_tv, NULL ); |
nkeynes@645 | 236 | uint32_t ms = (tex_tv.tv_sec - start_tv.tv_sec) * 1000 + |
nkeynes@645 | 237 | (tex_tv.tv_usec - start_tv.tv_usec)/1000; |
nkeynes@645 | 238 | DEBUG( "Scene setup in %dms", ms ); |
nkeynes@639 | 239 | |
nkeynes@639 | 240 | /* Setup view projection matrix */ |
nkeynes@639 | 241 | glMatrixMode(GL_PROJECTION); |
nkeynes@639 | 242 | glLoadIdentity(); |
nkeynes@639 | 243 | float nearz = pvr2_scene.bounds[4]; |
nkeynes@639 | 244 | float farz = pvr2_scene.bounds[5]; |
nkeynes@639 | 245 | if( nearz == farz ) { |
nkeynes@639 | 246 | farz*= 2.0; |
nkeynes@639 | 247 | } |
nkeynes@639 | 248 | glOrtho( 0, pvr2_scene.buffer_width, pvr2_scene.buffer_height, 0, |
nkeynes@648 | 249 | -farz, -nearz ); |
nkeynes@649 | 250 | float alphaRef = ((float)(MMIO_READ(PVR2, RENDER_ALPHA_REF)&0xFF)+1)/256.0; |
nkeynes@649 | 251 | glAlphaFunc( GL_GEQUAL, alphaRef ); |
nkeynes@639 | 252 | |
nkeynes@639 | 253 | /* Clear the buffer (FIXME: May not want always want to do this) */ |
nkeynes@639 | 254 | glDisable( GL_SCISSOR_TEST ); |
nkeynes@639 | 255 | glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT ); |
nkeynes@639 | 256 | |
nkeynes@639 | 257 | /* Setup vertex array pointers */ |
nkeynes@639 | 258 | glInterleavedArrays(GL_T2F_C4UB_V3F, sizeof(struct vertex_struct), pvr2_scene.vertex_array); |
nkeynes@639 | 259 | glSecondaryColorPointerEXT(4, GL_UNSIGNED_BYTE, sizeof(struct vertex_struct), &pvr2_scene.vertex_array[0].offset_rgba ); |
nkeynes@639 | 260 | |
nkeynes@639 | 261 | uint32_t bgplane_mode = MMIO_READ(PVR2, RENDER_BGPLANE); |
nkeynes@639 | 262 | uint32_t *bgplane = pvr2_scene.pvr2_pbuf + (((bgplane_mode & 0x00FFFFFF)) >> 3) ; |
nkeynes@639 | 263 | render_backplane( bgplane, pvr2_scene.buffer_width, pvr2_scene.buffer_height, bgplane_mode ); |
nkeynes@639 | 264 | |
nkeynes@639 | 265 | glEnable( GL_SCISSOR_TEST ); |
nkeynes@639 | 266 | |
nkeynes@639 | 267 | /* Process the segment list */ |
nkeynes@639 | 268 | struct tile_segment *segment = pvr2_scene.segment_list; |
nkeynes@639 | 269 | do { |
nkeynes@639 | 270 | int tilex = SEGMENT_X(segment->control); |
nkeynes@639 | 271 | int tiley = SEGMENT_Y(segment->control); |
nkeynes@639 | 272 | |
nkeynes@639 | 273 | int tile_bounds[4] = { tilex << 5, (tilex+1)<<5, tiley<<5, (tiley+1)<<5 }; |
nkeynes@639 | 274 | if( !clip_tile_bounds(tile_bounds, pvr2_scene.bounds) ) { |
nkeynes@639 | 275 | continue; // fully clipped, skip tile |
nkeynes@639 | 276 | } |
nkeynes@639 | 277 | |
nkeynes@639 | 278 | /* Clip to the visible part of the tile */ |
nkeynes@639 | 279 | glScissor( tile_bounds[0], pvr2_scene.buffer_height-tile_bounds[3], |
nkeynes@639 | 280 | tile_bounds[1]-tile_bounds[0], tile_bounds[3] - tile_bounds[2] ); |
nkeynes@639 | 281 | if( IS_TILE_PTR(segment->opaque_ptr) ) { |
nkeynes@639 | 282 | gl_render_tilelist(segment->opaque_ptr); |
nkeynes@639 | 283 | } |
nkeynes@639 | 284 | if( IS_TILE_PTR(segment->trans_ptr) ) { |
nkeynes@645 | 285 | if( pvr2_scene.sort_mode == SORT_NEVER || |
nkeynes@645 | 286 | (pvr2_scene.sort_mode == SORT_TILEFLAG && (segment->control&SEGMENT_SORT_TRANS))) { |
nkeynes@645 | 287 | gl_render_tilelist(segment->trans_ptr); |
nkeynes@645 | 288 | } else { |
nkeynes@648 | 289 | render_autosort_tile(segment->trans_ptr, RENDER_NORMAL ); |
nkeynes@645 | 290 | } |
nkeynes@639 | 291 | } |
nkeynes@639 | 292 | if( IS_TILE_PTR(segment->punchout_ptr) ) { |
nkeynes@649 | 293 | glEnable(GL_ALPHA_TEST ); |
nkeynes@649 | 294 | render_autosort_tile(segment->punchout_ptr, RENDER_NORMAL ); |
nkeynes@649 | 295 | glDisable(GL_ALPHA_TEST ); |
nkeynes@639 | 296 | } |
nkeynes@639 | 297 | } while( !IS_LAST_SEGMENT(segment++) ); |
nkeynes@639 | 298 | glDisable( GL_SCISSOR_TEST ); |
nkeynes@639 | 299 | |
nkeynes@645 | 300 | gettimeofday( &end_tv, NULL ); |
nkeynes@645 | 301 | ms = (end_tv.tv_sec - tex_tv.tv_sec) * 1000 + |
nkeynes@645 | 302 | (end_tv.tv_usec - tex_tv.tv_usec)/1000; |
nkeynes@645 | 303 | DEBUG( "Scene render in %dms", ms ); |
nkeynes@639 | 304 | } |
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