nkeynes@100 | 1 | /**
|
nkeynes@118 | 2 | * $Id: render.c,v 1.5 2006-03-20 11:59:15 nkeynes Exp $
|
nkeynes@100 | 3 | *
|
nkeynes@100 | 4 | * PVR2 Renderer support. This is where the real work happens.
|
nkeynes@100 | 5 | *
|
nkeynes@100 | 6 | * Copyright (c) 2005 Nathan Keynes.
|
nkeynes@100 | 7 | *
|
nkeynes@100 | 8 | * This program is free software; you can redistribute it and/or modify
|
nkeynes@100 | 9 | * it under the terms of the GNU General Public License as published by
|
nkeynes@100 | 10 | * the Free Software Foundation; either version 2 of the License, or
|
nkeynes@100 | 11 | * (at your option) any later version.
|
nkeynes@100 | 12 | *
|
nkeynes@100 | 13 | * This program is distributed in the hope that it will be useful,
|
nkeynes@100 | 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
nkeynes@100 | 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
nkeynes@100 | 16 | * GNU General Public License for more details.
|
nkeynes@100 | 17 | */
|
nkeynes@100 | 18 |
|
nkeynes@100 | 19 | #include "pvr2/pvr2.h"
|
nkeynes@100 | 20 | #include "asic.h"
|
nkeynes@103 | 21 |
|
nkeynes@103 | 22 |
|
nkeynes@118 | 23 | #define POLY_COLOUR_PACKED 0x00000000
|
nkeynes@118 | 24 | #define POLY_COLOUR_FLOAT 0x00000010
|
nkeynes@118 | 25 | #define POLY_COLOUR_INTENSITY 0x00000020
|
nkeynes@118 | 26 | #define POLY_COLOUR_INTENSITY_PREV 0x00000030
|
nkeynes@103 | 27 |
|
nkeynes@103 | 28 | static int pvr2_poly_vertexes[4] = { 3, 4, 6, 8 };
|
nkeynes@103 | 29 | static int pvr2_poly_type[4] = { GL_TRIANGLES, GL_QUADS, GL_TRIANGLE_STRIP, GL_TRIANGLE_STRIP };
|
nkeynes@103 | 30 | static int pvr2_poly_depthmode[8] = { GL_NEVER, GL_LESS, GL_EQUAL, GL_LEQUAL,
|
nkeynes@103 | 31 | GL_GREATER, GL_NOTEQUAL, GL_GEQUAL,
|
nkeynes@103 | 32 | GL_ALWAYS };
|
nkeynes@103 | 33 | static int pvr2_poly_srcblend[8] = {
|
nkeynes@103 | 34 | GL_ZERO, GL_ONE, GL_DST_COLOR, GL_ONE_MINUS_DST_COLOR,
|
nkeynes@103 | 35 | GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_DST_ALPHA,
|
nkeynes@103 | 36 | GL_ONE_MINUS_DST_ALPHA };
|
nkeynes@103 | 37 | static int pvr2_poly_dstblend[8] = {
|
nkeynes@103 | 38 | GL_ZERO, GL_ONE, GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR,
|
nkeynes@103 | 39 | GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_DST_ALPHA,
|
nkeynes@103 | 40 | GL_ONE_MINUS_DST_ALPHA };
|
nkeynes@108 | 41 | static int pvr2_poly_texblend[4] = {
|
nkeynes@108 | 42 | GL_REPLACE, GL_BLEND, GL_DECAL, GL_MODULATE };
|
nkeynes@103 | 43 | static int pvr2_render_colour_format[8] = {
|
nkeynes@103 | 44 | COLFMT_ARGB1555, COLFMT_RGB565, COLFMT_ARGB4444, COLFMT_ARGB1555,
|
nkeynes@103 | 45 | COLFMT_RGB888, COLFMT_ARGB8888, COLFMT_ARGB8888, COLFMT_ARGB4444 };
|
nkeynes@103 | 46 |
|
nkeynes@103 | 47 | #define POLY_STRIP_TYPE(poly) ( pvr2_poly_type[((poly->command)>>18)&0x03] )
|
nkeynes@103 | 48 | #define POLY_STRIP_VERTEXES(poly) ( pvr2_poly_vertexes[((poly->command)>>18)&0x03] )
|
nkeynes@103 | 49 | #define POLY_DEPTH_MODE(poly) ( pvr2_poly_depthmode[poly->poly_cfg>>29] )
|
nkeynes@103 | 50 | #define POLY_DEPTH_WRITE(poly) (poly->poly_cfg&0x04000000)
|
nkeynes@103 | 51 | #define POLY_TEX_WIDTH(poly) ( 1<< (((poly->poly_mode >> 3) & 0x07 ) + 3) )
|
nkeynes@103 | 52 | #define POLY_TEX_HEIGHT(poly) ( 1<< (((poly->poly_mode) & 0x07 ) + 3) )
|
nkeynes@103 | 53 | #define POLY_BLEND_SRC(poly) ( pvr2_poly_srcblend[(poly->poly_mode) >> 29] )
|
nkeynes@103 | 54 | #define POLY_BLEND_DEST(poly) ( pvr2_poly_dstblend[((poly->poly_mode)>>26)&0x07] )
|
nkeynes@108 | 55 | #define POLY_TEX_BLEND(poly) ( pvr2_poly_texblend[((poly->poly_mode) >> 6)&0x03] )
|
nkeynes@118 | 56 | #define POLY_COLOUR_TYPE(poly) ( poly->command & 0x00000030 )
|
nkeynes@100 | 57 |
|
nkeynes@100 | 58 | extern uint32_t pvr2_frame_counter;
|
nkeynes@100 | 59 |
|
nkeynes@100 | 60 | /**
|
nkeynes@103 | 61 | * Describes a rendering buffer that's actually held in GL, for when we need
|
nkeynes@103 | 62 | * to fetch the bits back to vram.
|
nkeynes@103 | 63 | */
|
nkeynes@103 | 64 | typedef struct pvr2_render_buffer {
|
nkeynes@103 | 65 | uint32_t render_addr; /* The actual address rendered to in pvr ram */
|
nkeynes@103 | 66 | int width, height;
|
nkeynes@103 | 67 | int colour_format;
|
nkeynes@103 | 68 | } *pvr2_render_buffer_t;
|
nkeynes@103 | 69 |
|
nkeynes@103 | 70 | struct pvr2_render_buffer front_buffer;
|
nkeynes@103 | 71 | struct pvr2_render_buffer back_buffer;
|
nkeynes@103 | 72 |
|
nkeynes@103 | 73 | struct tile_descriptor {
|
nkeynes@103 | 74 | uint32_t header[6];
|
nkeynes@103 | 75 | struct tile_pointers {
|
nkeynes@103 | 76 | uint32_t tile_id;
|
nkeynes@103 | 77 | uint32_t opaque_ptr;
|
nkeynes@103 | 78 | uint32_t opaque_mod_ptr;
|
nkeynes@103 | 79 | uint32_t trans_ptr;
|
nkeynes@103 | 80 | uint32_t trans_mod_ptr;
|
nkeynes@103 | 81 | uint32_t punchout_ptr;
|
nkeynes@103 | 82 | } tile[0];
|
nkeynes@103 | 83 | };
|
nkeynes@103 | 84 |
|
nkeynes@103 | 85 | /* Textured polygon */
|
nkeynes@103 | 86 | struct pvr2_poly {
|
nkeynes@103 | 87 | uint32_t command;
|
nkeynes@103 | 88 | uint32_t poly_cfg; /* Bitmask */
|
nkeynes@103 | 89 | uint32_t poly_mode; /* texture/blending mask */
|
nkeynes@103 | 90 | uint32_t texture; /* texture data */
|
nkeynes@103 | 91 | float alpha;
|
nkeynes@103 | 92 | float red;
|
nkeynes@103 | 93 | float green;
|
nkeynes@103 | 94 | float blue;
|
nkeynes@103 | 95 | };
|
nkeynes@103 | 96 |
|
nkeynes@103 | 97 | struct pvr2_specular_highlight {
|
nkeynes@103 | 98 | float base_alpha;
|
nkeynes@103 | 99 | float base_red;
|
nkeynes@103 | 100 | float base_green;
|
nkeynes@103 | 101 | float base_blue;
|
nkeynes@103 | 102 | float offset_alpha;
|
nkeynes@103 | 103 | float offset_red;
|
nkeynes@103 | 104 | float offset_green;
|
nkeynes@103 | 105 | float offset_blue;
|
nkeynes@103 | 106 | };
|
nkeynes@103 | 107 |
|
nkeynes@103 | 108 |
|
nkeynes@118 | 109 | struct pvr2_vertex_packed {
|
nkeynes@103 | 110 | uint32_t command;
|
nkeynes@103 | 111 | float x, y, z;
|
nkeynes@103 | 112 | float s,t;
|
nkeynes@118 | 113 | uint32_t colour;
|
nkeynes@103 | 114 | float f;
|
nkeynes@103 | 115 | };
|
nkeynes@103 | 116 |
|
nkeynes@103 | 117 |
|
nkeynes@103 | 118 | void pvr2_render_copy_to_sh4( pvr2_render_buffer_t buffer,
|
nkeynes@103 | 119 | gboolean backBuffer );
|
nkeynes@103 | 120 |
|
nkeynes@108 | 121 | int pvr2_render_font_list = -1;
|
nkeynes@108 | 122 |
|
nkeynes@108 | 123 | int glPrintf( const char *fmt, ... )
|
nkeynes@108 | 124 | {
|
nkeynes@108 | 125 | va_list ap; /* our argument pointer */
|
nkeynes@108 | 126 | char buf[256];
|
nkeynes@108 | 127 | int len;
|
nkeynes@108 | 128 | if (fmt == NULL) /* if there is no string to draw do nothing */
|
nkeynes@108 | 129 | return;
|
nkeynes@108 | 130 | va_start(ap, fmt);
|
nkeynes@108 | 131 | len = vsnprintf(buf, sizeof(buf), fmt, ap);
|
nkeynes@108 | 132 | va_end(ap);
|
nkeynes@108 | 133 |
|
nkeynes@108 | 134 | if( pvr2_render_font_list == -1 ) {
|
nkeynes@108 | 135 | pvr2_render_font_list = video_glx_load_font( "-*-helvetica-*-r-normal--16-*-*-*-p-*-iso8859-1");
|
nkeynes@108 | 136 | }
|
nkeynes@108 | 137 |
|
nkeynes@108 | 138 | glPushAttrib(GL_LIST_BIT);
|
nkeynes@108 | 139 | glListBase(pvr2_render_font_list - 32);
|
nkeynes@108 | 140 | glCallLists(len, GL_UNSIGNED_BYTE, buf);
|
nkeynes@108 | 141 | glPopAttrib();
|
nkeynes@108 | 142 |
|
nkeynes@108 | 143 | return len;
|
nkeynes@108 | 144 | }
|
nkeynes@108 | 145 |
|
nkeynes@103 | 146 |
|
nkeynes@103 | 147 | gboolean pvr2_render_init( void )
|
nkeynes@103 | 148 | {
|
nkeynes@103 | 149 | front_buffer.render_addr = -1;
|
nkeynes@103 | 150 | back_buffer.render_addr = -1;
|
nkeynes@103 | 151 | }
|
nkeynes@103 | 152 |
|
nkeynes@103 | 153 | /**
|
nkeynes@103 | 154 | * Display a rendered frame if one is available.
|
nkeynes@103 | 155 | * @param address An address in PVR ram (0500000 range).
|
nkeynes@103 | 156 | * @return TRUE if a frame was available to be displayed, otherwise false.
|
nkeynes@103 | 157 | */
|
nkeynes@103 | 158 | gboolean pvr2_render_display_frame( uint32_t address )
|
nkeynes@103 | 159 | {
|
nkeynes@103 | 160 | if( front_buffer.render_addr == address ) {
|
nkeynes@103 | 161 | /* Current front buffer is already displayed, so do nothing
|
nkeynes@103 | 162 | * and tell the caller that all is well.
|
nkeynes@103 | 163 | */
|
nkeynes@103 | 164 | return TRUE;
|
nkeynes@103 | 165 | }
|
nkeynes@103 | 166 | if( back_buffer.render_addr == address ) {
|
nkeynes@103 | 167 | /* The more useful case - back buffer is to be displayed. Swap
|
nkeynes@103 | 168 | * the buffers
|
nkeynes@103 | 169 | */
|
nkeynes@103 | 170 | video_driver->display_back_buffer();
|
nkeynes@103 | 171 | front_buffer = back_buffer;
|
nkeynes@103 | 172 | back_buffer.render_addr = -1;
|
nkeynes@103 | 173 | return TRUE;
|
nkeynes@103 | 174 | }
|
nkeynes@103 | 175 | return FALSE;
|
nkeynes@108 | 176 | }
|
nkeynes@103 | 177 |
|
nkeynes@103 | 178 | /**
|
nkeynes@103 | 179 | * Prepare the OpenGL context to receive instructions for a new frame.
|
nkeynes@103 | 180 | */
|
nkeynes@103 | 181 | static void pvr2_render_prepare_context( sh4addr_t render_addr,
|
nkeynes@103 | 182 | uint32_t width, uint32_t height,
|
nkeynes@103 | 183 | uint32_t colour_format,
|
nkeynes@103 | 184 | gboolean texture_target )
|
nkeynes@103 | 185 | {
|
nkeynes@103 | 186 | /* Select and initialize the render context */
|
nkeynes@103 | 187 | video_driver->set_render_format( width, height, colour_format, texture_target );
|
nkeynes@103 | 188 |
|
nkeynes@103 | 189 | if( back_buffer.render_addr != -1 &&
|
nkeynes@103 | 190 | back_buffer.render_addr != render_addr ) {
|
nkeynes@103 | 191 | /* There's a current back buffer, and we're rendering somewhere else -
|
nkeynes@103 | 192 | * flush the back buffer back to vram and start a new back buffer
|
nkeynes@103 | 193 | */
|
nkeynes@103 | 194 | pvr2_render_copy_to_sh4( &back_buffer, TRUE );
|
nkeynes@103 | 195 | }
|
nkeynes@103 | 196 |
|
nkeynes@103 | 197 | if( front_buffer.render_addr == render_addr ) {
|
nkeynes@103 | 198 | /* In case we've been asked to render to the current front buffer -
|
nkeynes@103 | 199 | * invalidate the front buffer and render to the back buffer, ensuring
|
nkeynes@103 | 200 | * we swap at the next frame display.
|
nkeynes@103 | 201 | */
|
nkeynes@103 | 202 | front_buffer.render_addr = -1;
|
nkeynes@103 | 203 | }
|
nkeynes@103 | 204 | back_buffer.render_addr = render_addr;
|
nkeynes@103 | 205 | back_buffer.width = width;
|
nkeynes@103 | 206 | back_buffer.height = height;
|
nkeynes@103 | 207 | back_buffer.colour_format = colour_format;
|
nkeynes@103 | 208 |
|
nkeynes@103 | 209 | /* Setup the display model */
|
nkeynes@103 | 210 | glDrawBuffer(GL_BACK);
|
nkeynes@103 | 211 | glShadeModel(GL_SMOOTH);
|
nkeynes@103 | 212 | glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
|
nkeynes@103 | 213 | glViewport( 0, 0, width, height );
|
nkeynes@103 | 214 | glMatrixMode(GL_PROJECTION);
|
nkeynes@103 | 215 | glLoadIdentity();
|
nkeynes@108 | 216 | glOrtho( 0, width, height, 0, 0, -65535 );
|
nkeynes@103 | 217 | glMatrixMode(GL_MODELVIEW);
|
nkeynes@103 | 218 | glLoadIdentity();
|
nkeynes@108 | 219 | glCullFace( GL_BACK );
|
nkeynes@103 | 220 |
|
nkeynes@103 | 221 | /* Clear out the buffers */
|
nkeynes@103 | 222 | glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
|
nkeynes@103 | 223 | glClearDepth(1.0f);
|
nkeynes@103 | 224 | glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
|
nkeynes@103 | 225 | }
|
nkeynes@103 | 226 |
|
nkeynes@118 | 227 | static void pvr2_dump_display_list( uint32_t * display_list, uint32_t length )
|
nkeynes@118 | 228 | {
|
nkeynes@118 | 229 | uint32_t i;
|
nkeynes@118 | 230 | for( i =0; i<length; i+=4 ) {
|
nkeynes@118 | 231 | if( (i % 32) == 0 ) {
|
nkeynes@118 | 232 | if( i != 0 )
|
nkeynes@118 | 233 | fprintf( stderr, "\n" );
|
nkeynes@118 | 234 | fprintf( stderr, "%08X:", i );
|
nkeynes@118 | 235 | }
|
nkeynes@118 | 236 | fprintf( stderr, " %08X", display_list[i] );
|
nkeynes@118 | 237 | }
|
nkeynes@118 | 238 | }
|
nkeynes@118 | 239 |
|
nkeynes@103 | 240 | static void pvr2_render_display_list( uint32_t *display_list, uint32_t length )
|
nkeynes@103 | 241 | {
|
nkeynes@103 | 242 | uint32_t *cmd_ptr = display_list;
|
nkeynes@118 | 243 | int strip_length = 0, vertex_count = 0;
|
nkeynes@118 | 244 | int colour_type;
|
nkeynes@103 | 245 | gboolean textured = FALSE;
|
nkeynes@103 | 246 | struct pvr2_poly *poly;
|
nkeynes@103 | 247 | while( cmd_ptr < display_list+length ) {
|
nkeynes@118 | 248 | unsigned int cmd = *cmd_ptr >> 24;
|
nkeynes@118 | 249 | switch( cmd ) {
|
nkeynes@103 | 250 | case PVR2_CMD_POLY_OPAQUE:
|
nkeynes@103 | 251 | poly = (struct pvr2_poly *)cmd_ptr;
|
nkeynes@103 | 252 | if( poly->command & PVR2_POLY_TEXTURED ) {
|
nkeynes@103 | 253 | uint32_t addr = PVR2_TEX_ADDR(poly->texture);
|
nkeynes@103 | 254 | int width = POLY_TEX_WIDTH(poly);
|
nkeynes@103 | 255 | int height = POLY_TEX_HEIGHT(poly);
|
nkeynes@108 | 256 | glEnable( GL_TEXTURE_2D );
|
nkeynes@103 | 257 | texcache_get_texture( addr, width, height, poly->texture );
|
nkeynes@103 | 258 | textured = TRUE;
|
nkeynes@108 | 259 | glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, POLY_TEX_BLEND(poly) );
|
nkeynes@103 | 260 | } else {
|
nkeynes@103 | 261 | textured = FALSE;
|
nkeynes@103 | 262 | glDisable( GL_TEXTURE_2D );
|
nkeynes@103 | 263 | }
|
nkeynes@103 | 264 | glBlendFunc( POLY_BLEND_SRC(poly), POLY_BLEND_DEST(poly) );
|
nkeynes@103 | 265 | if( poly->command & PVR2_POLY_SPECULAR ) {
|
nkeynes@103 | 266 | /* Second block expected */
|
nkeynes@103 | 267 | }
|
nkeynes@103 | 268 | if( POLY_DEPTH_WRITE(poly) ) {
|
nkeynes@103 | 269 | glEnable( GL_DEPTH_TEST );
|
nkeynes@103 | 270 | glDepthFunc( POLY_DEPTH_MODE(poly) );
|
nkeynes@103 | 271 | } else {
|
nkeynes@103 | 272 | glDisable( GL_DEPTH_TEST );
|
nkeynes@103 | 273 | }
|
nkeynes@103 | 274 |
|
nkeynes@108 | 275 | switch( (poly->poly_cfg >> 27) & 0x03 ) {
|
nkeynes@108 | 276 | case 0:
|
nkeynes@108 | 277 | case 1:
|
nkeynes@108 | 278 | glDisable( GL_CULL_FACE );
|
nkeynes@108 | 279 | break;
|
nkeynes@108 | 280 | case 2:
|
nkeynes@108 | 281 | glEnable( GL_CULL_FACE );
|
nkeynes@108 | 282 | glFrontFace( GL_CW );
|
nkeynes@108 | 283 | break;
|
nkeynes@108 | 284 | case 3:
|
nkeynes@108 | 285 | glEnable( GL_CULL_FACE );
|
nkeynes@108 | 286 | glFrontFace( GL_CCW );
|
nkeynes@108 | 287 | }
|
nkeynes@118 | 288 | strip_length = POLY_STRIP_VERTEXES( poly );
|
nkeynes@118 | 289 | colour_type = POLY_COLOUR_TYPE( poly );
|
nkeynes@118 | 290 | vertex_count = 0;
|
nkeynes@103 | 291 | break;
|
nkeynes@103 | 292 | case PVR2_CMD_VERTEX_LAST:
|
nkeynes@103 | 293 | case PVR2_CMD_VERTEX:
|
nkeynes@118 | 294 | if( vertex_count == 0 ) {
|
nkeynes@118 | 295 | if( strip_length == 3 )
|
nkeynes@118 | 296 | glBegin( GL_TRIANGLES );
|
nkeynes@118 | 297 | else
|
nkeynes@118 | 298 | glBegin( GL_TRIANGLE_STRIP );
|
nkeynes@103 | 299 | }
|
nkeynes@118 | 300 | vertex_count++;
|
nkeynes@118 | 301 |
|
nkeynes@118 | 302 | struct pvr2_vertex_packed *vertex = (struct pvr2_vertex_packed *)cmd_ptr;
|
nkeynes@103 | 303 | if( textured ) {
|
nkeynes@103 | 304 | glTexCoord2f( vertex->s, vertex->t );
|
nkeynes@103 | 305 | }
|
nkeynes@118 | 306 |
|
nkeynes@118 | 307 | switch( colour_type ) {
|
nkeynes@118 | 308 | case POLY_COLOUR_PACKED:
|
nkeynes@118 | 309 | glColor4ub( vertex->colour >> 16, vertex->colour >> 8,
|
nkeynes@118 | 310 | vertex->colour, vertex->colour >> 24 );
|
nkeynes@118 | 311 | break;
|
nkeynes@118 | 312 | }
|
nkeynes@103 | 313 | glVertex3f( vertex->x, vertex->y, vertex->z );
|
nkeynes@103 | 314 |
|
nkeynes@118 | 315 | if( cmd == PVR2_CMD_VERTEX_LAST ) {
|
nkeynes@103 | 316 | glEnd();
|
nkeynes@118 | 317 | vertex_count = 0;
|
nkeynes@118 | 318 | }
|
nkeynes@118 | 319 |
|
nkeynes@118 | 320 | if( vertex_count >= strip_length ) {
|
nkeynes@118 | 321 | ERROR( "Rendering long strip (expected end after %d)", strip_length );
|
nkeynes@118 | 322 | pvr2_dump_display_list( display_list, length );
|
nkeynes@118 | 323 | return;
|
nkeynes@108 | 324 | }
|
nkeynes@103 | 325 | break;
|
nkeynes@103 | 326 | }
|
nkeynes@103 | 327 | cmd_ptr += 8; /* Next record */
|
nkeynes@103 | 328 | }
|
nkeynes@103 | 329 | }
|
nkeynes@103 | 330 |
|
nkeynes@103 | 331 | /**
|
nkeynes@103 | 332 | * Render a complete scene into the OpenGL back buffer.
|
nkeynes@103 | 333 | * Note: this will probably need to be broken up eventually once timings are
|
nkeynes@100 | 334 | * determined.
|
nkeynes@100 | 335 | */
|
nkeynes@103 | 336 | void pvr2_render_scene( )
|
nkeynes@100 | 337 | {
|
nkeynes@103 | 338 | struct tile_descriptor *tile_desc =
|
nkeynes@103 | 339 | (struct tile_descriptor *)mem_get_region(PVR2_RAM_BASE + MMIO_READ( PVR2, TILEBASE ));
|
nkeynes@100 | 340 |
|
nkeynes@103 | 341 | uint32_t render_addr = MMIO_READ( PVR2, RENDADDR1 );
|
nkeynes@103 | 342 | gboolean render_to_tex;
|
nkeynes@103 | 343 | if( render_addr & 0x01000000 ) {
|
nkeynes@103 | 344 | render_addr = (render_addr & 0x00FFFFFF) + PVR2_RAM_BASE_INT;
|
nkeynes@103 | 345 | /* Heuristic - if we're rendering to the interlaced region we're
|
nkeynes@103 | 346 | * probably creating a texture rather than rendering actual output.
|
nkeynes@103 | 347 | * We can optimise for this case a little
|
nkeynes@103 | 348 | */
|
nkeynes@103 | 349 | render_to_tex = TRUE;
|
nkeynes@118 | 350 | WARN( "Render to texture not supported properly yet" );
|
nkeynes@103 | 351 | } else {
|
nkeynes@103 | 352 | render_addr = (render_addr & 0x00FFFFFF) + PVR2_RAM_BASE;
|
nkeynes@103 | 353 | render_to_tex = FALSE;
|
nkeynes@103 | 354 | }
|
nkeynes@103 | 355 | uint32_t render_mode = MMIO_READ( PVR2, RENDMODE );
|
nkeynes@103 | 356 | int width = 640; /* FIXME - get this from the tile buffer */
|
nkeynes@103 | 357 | int height = 480;
|
nkeynes@103 | 358 | int colour_format = pvr2_render_colour_format[render_mode&0x07];
|
nkeynes@103 | 359 | pvr2_render_prepare_context( render_addr, width, height, colour_format,
|
nkeynes@103 | 360 | render_to_tex );
|
nkeynes@103 | 361 |
|
nkeynes@103 | 362 | uint32_t *display_list =
|
nkeynes@103 | 363 | (uint32_t *)mem_get_region(PVR2_RAM_BASE + MMIO_READ( PVR2, OBJBASE ));
|
nkeynes@103 | 364 | uint32_t display_length = *display_list++;
|
nkeynes@103 | 365 |
|
nkeynes@103 | 366 | int clip_x = MMIO_READ( PVR2, HCLIP ) & 0x03FF;
|
nkeynes@103 | 367 | int clip_y = MMIO_READ( PVR2, VCLIP ) & 0x03FF;
|
nkeynes@103 | 368 | int clip_width = ((MMIO_READ( PVR2, HCLIP ) >> 16) & 0x03FF) - clip_x + 1;
|
nkeynes@103 | 369 | int clip_height= ((MMIO_READ( PVR2, VCLIP ) >> 16) & 0x03FF) - clip_y + 1;
|
nkeynes@103 | 370 |
|
nkeynes@103 | 371 | if( clip_x == 0 && clip_y == 0 && clip_width == width && clip_height == height ) {
|
nkeynes@103 | 372 | glDisable( GL_SCISSOR_TEST );
|
nkeynes@103 | 373 | } else {
|
nkeynes@103 | 374 | glEnable( GL_SCISSOR_TEST );
|
nkeynes@103 | 375 | glScissor( clip_x, clip_y, clip_width, clip_height );
|
nkeynes@103 | 376 | }
|
nkeynes@103 | 377 |
|
nkeynes@103 | 378 | /* Fog setup goes here */
|
nkeynes@103 | 379 |
|
nkeynes@103 | 380 | /* Render the display list */
|
nkeynes@103 | 381 | pvr2_render_display_list( display_list, display_length );
|
nkeynes@103 | 382 |
|
nkeynes@103 | 383 | /* Post-render cleanup and update */
|
nkeynes@103 | 384 |
|
nkeynes@108 | 385 | /* Add frame, fps, etc data */
|
nkeynes@108 | 386 | glRasterPos2i( 4, 16 );
|
nkeynes@108 | 387 | // glColor3f( 0.0f, 0.0f, 1.0f );
|
nkeynes@108 | 388 | glPrintf( "Frame %d", pvr2_frame_counter );
|
nkeynes@103 | 389 |
|
nkeynes@103 | 390 | /* Generate end of render event */
|
nkeynes@100 | 391 | asic_event( EVENT_PVR_RENDER_DONE );
|
nkeynes@100 | 392 | DEBUG( "Rendered frame %d", pvr2_frame_counter );
|
nkeynes@100 | 393 | }
|
nkeynes@103 | 394 |
|
nkeynes@103 | 395 |
|
nkeynes@103 | 396 | /**
|
nkeynes@103 | 397 | * Flush the indicated render buffer back to PVR. Caller is responsible for
|
nkeynes@103 | 398 | * tracking whether there is actually anything in the buffer.
|
nkeynes@103 | 399 | *
|
nkeynes@103 | 400 | * @param buffer A render buffer indicating the address to store to, and the
|
nkeynes@103 | 401 | * format the data needs to be in.
|
nkeynes@103 | 402 | * @param backBuffer TRUE to flush the back buffer, FALSE for
|
nkeynes@103 | 403 | * the front buffer.
|
nkeynes@103 | 404 | */
|
nkeynes@103 | 405 | void pvr2_render_copy_to_sh4( pvr2_render_buffer_t buffer,
|
nkeynes@103 | 406 | gboolean backBuffer )
|
nkeynes@103 | 407 | {
|
nkeynes@103 | 408 | if( buffer->render_addr == -1 )
|
nkeynes@103 | 409 | return;
|
nkeynes@103 | 410 | GLenum type, format = GL_RGBA;
|
nkeynes@103 | 411 | int size = buffer->width * buffer->height;
|
nkeynes@103 | 412 |
|
nkeynes@103 | 413 | switch( buffer->colour_format ) {
|
nkeynes@103 | 414 | case COLFMT_RGB565:
|
nkeynes@103 | 415 | type = GL_UNSIGNED_SHORT_5_6_5;
|
nkeynes@103 | 416 | format = GL_RGB;
|
nkeynes@103 | 417 | size <<= 1;
|
nkeynes@103 | 418 | break;
|
nkeynes@103 | 419 | case COLFMT_RGB888:
|
nkeynes@103 | 420 | type = GL_UNSIGNED_INT;
|
nkeynes@103 | 421 | format = GL_RGB;
|
nkeynes@103 | 422 | size = (size<<1)+size;
|
nkeynes@103 | 423 | break;
|
nkeynes@103 | 424 | case COLFMT_ARGB1555:
|
nkeynes@103 | 425 | type = GL_UNSIGNED_SHORT_5_5_5_1;
|
nkeynes@103 | 426 | size <<= 1;
|
nkeynes@103 | 427 | break;
|
nkeynes@103 | 428 | case COLFMT_ARGB4444:
|
nkeynes@103 | 429 | type = GL_UNSIGNED_SHORT_4_4_4_4;
|
nkeynes@103 | 430 | size <<= 1;
|
nkeynes@103 | 431 | break;
|
nkeynes@103 | 432 | case COLFMT_ARGB8888:
|
nkeynes@103 | 433 | type = GL_UNSIGNED_INT_8_8_8_8;
|
nkeynes@103 | 434 | size <<= 2;
|
nkeynes@103 | 435 | break;
|
nkeynes@103 | 436 | }
|
nkeynes@103 | 437 |
|
nkeynes@103 | 438 | if( backBuffer ) {
|
nkeynes@103 | 439 | glFinish();
|
nkeynes@103 | 440 | glReadBuffer( GL_BACK );
|
nkeynes@103 | 441 | } else {
|
nkeynes@103 | 442 | glReadBuffer( GL_FRONT );
|
nkeynes@103 | 443 | }
|
nkeynes@103 | 444 |
|
nkeynes@103 | 445 | if( buffer->render_addr & 0xFF000000 == 0x04000000 ) {
|
nkeynes@103 | 446 | /* Interlaced buffer. Go the double copy... :( */
|
nkeynes@103 | 447 | char target[size];
|
nkeynes@103 | 448 | glReadPixels( 0, 0, buffer->width, buffer->height, format, type, target );
|
nkeynes@103 | 449 | pvr2_vram64_write( buffer->render_addr, target, size );
|
nkeynes@103 | 450 | } else {
|
nkeynes@103 | 451 | /* Regular buffer - go direct */
|
nkeynes@103 | 452 | char *target = mem_get_region( buffer->render_addr );
|
nkeynes@103 | 453 | glReadPixels( 0, 0, buffer->width, buffer->height, format, type, target );
|
nkeynes@103 | 454 | }
|
nkeynes@103 | 455 | }
|
nkeynes@103 | 456 |
|
nkeynes@103 | 457 |
|
nkeynes@103 | 458 | /**
|
nkeynes@103 | 459 | * Copy data from PVR ram into the GL render buffer.
|
nkeynes@103 | 460 | *
|
nkeynes@103 | 461 | * @param buffer A render buffer indicating the address to read from, and the
|
nkeynes@103 | 462 | * format the data is in.
|
nkeynes@103 | 463 | * @param backBuffer TRUE to write the back buffer, FALSE for
|
nkeynes@103 | 464 | * the front buffer.
|
nkeynes@103 | 465 | */
|
nkeynes@103 | 466 | void pvr2_render_copy_from_sh4( pvr2_render_buffer_t buffer,
|
nkeynes@103 | 467 | gboolean backBuffer )
|
nkeynes@103 | 468 | {
|
nkeynes@103 | 469 | if( buffer->render_addr == -1 )
|
nkeynes@103 | 470 | return;
|
nkeynes@103 | 471 | GLenum type, format = GL_RGBA;
|
nkeynes@103 | 472 | int size = buffer->width * buffer->height;
|
nkeynes@103 | 473 |
|
nkeynes@103 | 474 | switch( buffer->colour_format ) {
|
nkeynes@103 | 475 | case COLFMT_RGB565:
|
nkeynes@103 | 476 | type = GL_UNSIGNED_SHORT_5_6_5;
|
nkeynes@103 | 477 | format = GL_RGB;
|
nkeynes@103 | 478 | size <<= 1;
|
nkeynes@103 | 479 | break;
|
nkeynes@103 | 480 | case COLFMT_RGB888:
|
nkeynes@103 | 481 | type = GL_UNSIGNED_INT;
|
nkeynes@103 | 482 | format = GL_RGB;
|
nkeynes@103 | 483 | size = (size<<1)+size;
|
nkeynes@103 | 484 | break;
|
nkeynes@103 | 485 | case COLFMT_ARGB1555:
|
nkeynes@103 | 486 | type = GL_UNSIGNED_SHORT_5_5_5_1;
|
nkeynes@103 | 487 | size <<= 1;
|
nkeynes@103 | 488 | break;
|
nkeynes@103 | 489 | case COLFMT_ARGB4444:
|
nkeynes@103 | 490 | type = GL_UNSIGNED_SHORT_4_4_4_4;
|
nkeynes@103 | 491 | size <<= 1;
|
nkeynes@103 | 492 | break;
|
nkeynes@103 | 493 | case COLFMT_ARGB8888:
|
nkeynes@103 | 494 | type = GL_UNSIGNED_INT_8_8_8_8;
|
nkeynes@103 | 495 | size <<= 2;
|
nkeynes@103 | 496 | break;
|
nkeynes@103 | 497 | }
|
nkeynes@103 | 498 |
|
nkeynes@103 | 499 | if( backBuffer ) {
|
nkeynes@103 | 500 | glDrawBuffer( GL_BACK );
|
nkeynes@103 | 501 | } else {
|
nkeynes@103 | 502 | glDrawBuffer( GL_FRONT );
|
nkeynes@103 | 503 | }
|
nkeynes@103 | 504 |
|
nkeynes@103 | 505 | glRasterPos2i( 0, 0 );
|
nkeynes@103 | 506 | if( buffer->render_addr & 0xFF000000 == 0x04000000 ) {
|
nkeynes@103 | 507 | /* Interlaced buffer. Go the double copy... :( */
|
nkeynes@103 | 508 | char target[size];
|
nkeynes@103 | 509 | pvr2_vram64_read( target, buffer->render_addr, size );
|
nkeynes@103 | 510 | glDrawPixels( buffer->width, buffer->height,
|
nkeynes@103 | 511 | format, type, target );
|
nkeynes@103 | 512 | } else {
|
nkeynes@103 | 513 | /* Regular buffer - go direct */
|
nkeynes@103 | 514 | char *target = mem_get_region( buffer->render_addr );
|
nkeynes@103 | 515 | glDrawPixels( buffer->width, buffer->height,
|
nkeynes@103 | 516 | format, type, target );
|
nkeynes@103 | 517 | }
|
nkeynes@103 | 518 | }
|