nkeynes@100 | 1 | /**
|
nkeynes@219 | 2 | * $Id: render.c,v 1.13 2006-08-29 08:12:13 nkeynes Exp $
|
nkeynes@100 | 3 | *
|
nkeynes@189 | 4 | * PVR2 Renderer support. This part is primarily
|
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 | static int pvr2_render_colour_format[8] = {
|
nkeynes@103 | 23 | COLFMT_ARGB1555, COLFMT_RGB565, COLFMT_ARGB4444, COLFMT_ARGB1555,
|
nkeynes@103 | 24 | COLFMT_RGB888, COLFMT_ARGB8888, COLFMT_ARGB8888, COLFMT_ARGB4444 };
|
nkeynes@103 | 25 |
|
nkeynes@100 | 26 |
|
nkeynes@100 | 27 | /**
|
nkeynes@103 | 28 | * Describes a rendering buffer that's actually held in GL, for when we need
|
nkeynes@103 | 29 | * to fetch the bits back to vram.
|
nkeynes@103 | 30 | */
|
nkeynes@103 | 31 | typedef struct pvr2_render_buffer {
|
nkeynes@161 | 32 | sh4addr_t render_addr; /* The actual address rendered to in pvr ram */
|
nkeynes@161 | 33 | uint32_t size; /* Length of rendering region in bytes */
|
nkeynes@103 | 34 | int width, height;
|
nkeynes@103 | 35 | int colour_format;
|
nkeynes@103 | 36 | } *pvr2_render_buffer_t;
|
nkeynes@103 | 37 |
|
nkeynes@103 | 38 | struct pvr2_render_buffer front_buffer;
|
nkeynes@103 | 39 | struct pvr2_render_buffer back_buffer;
|
nkeynes@103 | 40 |
|
nkeynes@128 | 41 | typedef struct pvr2_bgplane_packed {
|
nkeynes@128 | 42 | uint32_t poly_cfg, poly_mode;
|
nkeynes@128 | 43 | uint32_t texture_mode;
|
nkeynes@128 | 44 | float x1, y1, z1;
|
nkeynes@128 | 45 | uint32_t colour1;
|
nkeynes@128 | 46 | float x2, y2, z2;
|
nkeynes@128 | 47 | uint32_t colour2;
|
nkeynes@128 | 48 | float x3, y3, z3;
|
nkeynes@128 | 49 | uint32_t colour3;
|
nkeynes@128 | 50 | } *pvr2_bgplane_packed_t;
|
nkeynes@128 | 51 |
|
nkeynes@128 | 52 |
|
nkeynes@103 | 53 |
|
nkeynes@103 | 54 | void pvr2_render_copy_to_sh4( pvr2_render_buffer_t buffer,
|
nkeynes@103 | 55 | gboolean backBuffer );
|
nkeynes@103 | 56 |
|
nkeynes@108 | 57 | int pvr2_render_font_list = -1;
|
nkeynes@132 | 58 | int pvr2_render_trace = 0;
|
nkeynes@108 | 59 |
|
nkeynes@132 | 60 | int glPrintf( int x, int y, const char *fmt, ... )
|
nkeynes@108 | 61 | {
|
nkeynes@108 | 62 | va_list ap; /* our argument pointer */
|
nkeynes@108 | 63 | char buf[256];
|
nkeynes@108 | 64 | int len;
|
nkeynes@108 | 65 | if (fmt == NULL) /* if there is no string to draw do nothing */
|
nkeynes@108 | 66 | return;
|
nkeynes@108 | 67 | va_start(ap, fmt);
|
nkeynes@108 | 68 | len = vsnprintf(buf, sizeof(buf), fmt, ap);
|
nkeynes@108 | 69 | va_end(ap);
|
nkeynes@108 | 70 |
|
nkeynes@108 | 71 |
|
nkeynes@108 | 72 | glPushAttrib(GL_LIST_BIT);
|
nkeynes@132 | 73 | glDisable( GL_DEPTH_TEST );
|
nkeynes@132 | 74 | glDisable( GL_BLEND );
|
nkeynes@132 | 75 | glDisable( GL_TEXTURE_2D );
|
nkeynes@132 | 76 | glDisable( GL_ALPHA_TEST );
|
nkeynes@189 | 77 | glDisable( GL_CULL_FACE );
|
nkeynes@108 | 78 | glListBase(pvr2_render_font_list - 32);
|
nkeynes@132 | 79 | glColor3f( 1.0, 1.0, 1.0 );
|
nkeynes@132 | 80 | glRasterPos2i( x, y );
|
nkeynes@108 | 81 | glCallLists(len, GL_UNSIGNED_BYTE, buf);
|
nkeynes@108 | 82 | glPopAttrib();
|
nkeynes@108 | 83 |
|
nkeynes@108 | 84 | return len;
|
nkeynes@108 | 85 | }
|
nkeynes@108 | 86 |
|
nkeynes@189 | 87 | void glDrawGrid( int width, int height )
|
nkeynes@189 | 88 | {
|
nkeynes@189 | 89 | int i;
|
nkeynes@189 | 90 | glDisable( GL_DEPTH_TEST );
|
nkeynes@189 | 91 | glLineWidth(1);
|
nkeynes@189 | 92 |
|
nkeynes@189 | 93 | glBegin( GL_LINES );
|
nkeynes@189 | 94 | glColor4f( 1.0, 1.0, 1.0, 1.0 );
|
nkeynes@189 | 95 | for( i=32; i<width; i+=32 ) {
|
nkeynes@189 | 96 | glVertex3f( i, 0.0, 3.0 );
|
nkeynes@189 | 97 | glVertex3f( i,height-1, 3.0 );
|
nkeynes@189 | 98 | }
|
nkeynes@189 | 99 |
|
nkeynes@189 | 100 | for( i=32; i<height; i+=32 ) {
|
nkeynes@189 | 101 | glVertex3f( 0.0, i, 3.0 );
|
nkeynes@189 | 102 | glVertex3f( width, i, 3.0 );
|
nkeynes@189 | 103 | }
|
nkeynes@189 | 104 | glEnd();
|
nkeynes@189 | 105 |
|
nkeynes@189 | 106 | }
|
nkeynes@189 | 107 |
|
nkeynes@103 | 108 |
|
nkeynes@103 | 109 | gboolean pvr2_render_init( void )
|
nkeynes@103 | 110 | {
|
nkeynes@103 | 111 | front_buffer.render_addr = -1;
|
nkeynes@103 | 112 | back_buffer.render_addr = -1;
|
nkeynes@103 | 113 | }
|
nkeynes@103 | 114 |
|
nkeynes@103 | 115 | /**
|
nkeynes@161 | 116 | * Invalidate any caching on the supplied address. Specifically, if it falls
|
nkeynes@161 | 117 | * within either the front buffer or back buffer, flush the buffer back to
|
nkeynes@161 | 118 | * PVR2 ram (note that front buffer flush may be corrupt under some
|
nkeynes@161 | 119 | * circumstances).
|
nkeynes@161 | 120 | */
|
nkeynes@161 | 121 | gboolean pvr2_render_invalidate( sh4addr_t address )
|
nkeynes@161 | 122 | {
|
nkeynes@161 | 123 | address = address & 0x1FFFFFFF;
|
nkeynes@161 | 124 | if( front_buffer.render_addr != -1 &&
|
nkeynes@161 | 125 | front_buffer.render_addr <= address &&
|
nkeynes@161 | 126 | (front_buffer.render_addr + front_buffer.size) > address ) {
|
nkeynes@161 | 127 | pvr2_render_copy_to_sh4( &front_buffer, FALSE );
|
nkeynes@161 | 128 | front_buffer.render_addr = -1;
|
nkeynes@161 | 129 | return TRUE;
|
nkeynes@161 | 130 | } else if( back_buffer.render_addr != -1 &&
|
nkeynes@161 | 131 | back_buffer.render_addr <= address &&
|
nkeynes@161 | 132 | (back_buffer.render_addr + back_buffer.size) > address ) {
|
nkeynes@161 | 133 | pvr2_render_copy_to_sh4( &back_buffer, TRUE );
|
nkeynes@161 | 134 | back_buffer.render_addr = -1;
|
nkeynes@161 | 135 | return TRUE;
|
nkeynes@161 | 136 | }
|
nkeynes@161 | 137 | return FALSE;
|
nkeynes@161 | 138 | }
|
nkeynes@161 | 139 |
|
nkeynes@161 | 140 | /**
|
nkeynes@103 | 141 | * Display a rendered frame if one is available.
|
nkeynes@103 | 142 | * @param address An address in PVR ram (0500000 range).
|
nkeynes@103 | 143 | * @return TRUE if a frame was available to be displayed, otherwise false.
|
nkeynes@103 | 144 | */
|
nkeynes@103 | 145 | gboolean pvr2_render_display_frame( uint32_t address )
|
nkeynes@103 | 146 | {
|
nkeynes@103 | 147 | if( front_buffer.render_addr == address ) {
|
nkeynes@103 | 148 | /* Current front buffer is already displayed, so do nothing
|
nkeynes@103 | 149 | * and tell the caller that all is well.
|
nkeynes@103 | 150 | */
|
nkeynes@103 | 151 | return TRUE;
|
nkeynes@103 | 152 | }
|
nkeynes@103 | 153 | if( back_buffer.render_addr == address ) {
|
nkeynes@103 | 154 | /* The more useful case - back buffer is to be displayed. Swap
|
nkeynes@103 | 155 | * the buffers
|
nkeynes@103 | 156 | */
|
nkeynes@144 | 157 | display_driver->display_back_buffer();
|
nkeynes@103 | 158 | front_buffer = back_buffer;
|
nkeynes@103 | 159 | back_buffer.render_addr = -1;
|
nkeynes@103 | 160 | return TRUE;
|
nkeynes@103 | 161 | }
|
nkeynes@103 | 162 | return FALSE;
|
nkeynes@108 | 163 | }
|
nkeynes@103 | 164 |
|
nkeynes@103 | 165 | /**
|
nkeynes@103 | 166 | * Prepare the OpenGL context to receive instructions for a new frame.
|
nkeynes@103 | 167 | */
|
nkeynes@103 | 168 | static void pvr2_render_prepare_context( sh4addr_t render_addr,
|
nkeynes@103 | 169 | uint32_t width, uint32_t height,
|
nkeynes@103 | 170 | uint32_t colour_format,
|
nkeynes@128 | 171 | float bgplanez,
|
nkeynes@103 | 172 | gboolean texture_target )
|
nkeynes@103 | 173 | {
|
nkeynes@103 | 174 | /* Select and initialize the render context */
|
nkeynes@144 | 175 | display_driver->set_render_format( width, height, colour_format, texture_target );
|
nkeynes@103 | 176 |
|
nkeynes@132 | 177 | if( pvr2_render_font_list == -1 ) {
|
nkeynes@132 | 178 | pvr2_render_font_list = video_glx_load_font( "-*-helvetica-*-r-normal--16-*-*-*-p-*-iso8859-1");
|
nkeynes@132 | 179 | }
|
nkeynes@132 | 180 |
|
nkeynes@103 | 181 | if( back_buffer.render_addr != -1 &&
|
nkeynes@103 | 182 | back_buffer.render_addr != render_addr ) {
|
nkeynes@103 | 183 | /* There's a current back buffer, and we're rendering somewhere else -
|
nkeynes@103 | 184 | * flush the back buffer back to vram and start a new back buffer
|
nkeynes@103 | 185 | */
|
nkeynes@103 | 186 | pvr2_render_copy_to_sh4( &back_buffer, TRUE );
|
nkeynes@103 | 187 | }
|
nkeynes@103 | 188 |
|
nkeynes@103 | 189 | if( front_buffer.render_addr == render_addr ) {
|
nkeynes@103 | 190 | /* In case we've been asked to render to the current front buffer -
|
nkeynes@103 | 191 | * invalidate the front buffer and render to the back buffer, ensuring
|
nkeynes@103 | 192 | * we swap at the next frame display.
|
nkeynes@103 | 193 | */
|
nkeynes@103 | 194 | front_buffer.render_addr = -1;
|
nkeynes@103 | 195 | }
|
nkeynes@103 | 196 | back_buffer.render_addr = render_addr;
|
nkeynes@103 | 197 | back_buffer.width = width;
|
nkeynes@103 | 198 | back_buffer.height = height;
|
nkeynes@103 | 199 | back_buffer.colour_format = colour_format;
|
nkeynes@161 | 200 | back_buffer.size = width * height * colour_format_bytes[colour_format];
|
nkeynes@103 | 201 |
|
nkeynes@103 | 202 | /* Setup the display model */
|
nkeynes@103 | 203 | glDrawBuffer(GL_BACK);
|
nkeynes@103 | 204 | glShadeModel(GL_SMOOTH);
|
nkeynes@103 | 205 | glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
|
nkeynes@103 | 206 | glViewport( 0, 0, width, height );
|
nkeynes@103 | 207 | glMatrixMode(GL_PROJECTION);
|
nkeynes@103 | 208 | glLoadIdentity();
|
nkeynes@169 | 209 | glOrtho( 0, width, height, 0, bgplanez, -4 );
|
nkeynes@103 | 210 | glMatrixMode(GL_MODELVIEW);
|
nkeynes@103 | 211 | glLoadIdentity();
|
nkeynes@108 | 212 | glCullFace( GL_BACK );
|
nkeynes@103 | 213 |
|
nkeynes@103 | 214 | /* Clear out the buffers */
|
nkeynes@189 | 215 | glDisable( GL_SCISSOR_TEST );
|
nkeynes@103 | 216 | glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
|
nkeynes@128 | 217 | glClearDepth(bgplanez);
|
nkeynes@103 | 218 | glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
|
nkeynes@103 | 219 | }
|
nkeynes@103 | 220 |
|
nkeynes@103 | 221 |
|
nkeynes@128 | 222 | #define MIN3( a,b,c ) ((a) < (b) ? ( (a) < (c) ? (a) : (c) ) : ((b) < (c) ? (b) : (c)) )
|
nkeynes@128 | 223 | #define MAX3( a,b,c ) ((a) > (b) ? ( (a) > (c) ? (a) : (c) ) : ((b) > (c) ? (b) : (c)) )
|
nkeynes@128 | 224 |
|
nkeynes@128 | 225 | /**
|
nkeynes@103 | 226 | * Render a complete scene into the OpenGL back buffer.
|
nkeynes@103 | 227 | * Note: this will probably need to be broken up eventually once timings are
|
nkeynes@100 | 228 | * determined.
|
nkeynes@100 | 229 | */
|
nkeynes@103 | 230 | void pvr2_render_scene( )
|
nkeynes@100 | 231 | {
|
nkeynes@103 | 232 | struct tile_descriptor *tile_desc =
|
nkeynes@191 | 233 | (struct tile_descriptor *)mem_get_region(PVR2_RAM_BASE + MMIO_READ( PVR2, RENDER_TILEBASE ));
|
nkeynes@100 | 234 |
|
nkeynes@191 | 235 | uint32_t render_addr = MMIO_READ( PVR2, RENDER_ADDR1 );
|
nkeynes@103 | 236 | gboolean render_to_tex;
|
nkeynes@103 | 237 | if( render_addr & 0x01000000 ) {
|
nkeynes@103 | 238 | render_addr = (render_addr & 0x00FFFFFF) + PVR2_RAM_BASE_INT;
|
nkeynes@103 | 239 | /* Heuristic - if we're rendering to the interlaced region we're
|
nkeynes@103 | 240 | * probably creating a texture rather than rendering actual output.
|
nkeynes@103 | 241 | * We can optimise for this case a little
|
nkeynes@103 | 242 | */
|
nkeynes@103 | 243 | render_to_tex = TRUE;
|
nkeynes@118 | 244 | WARN( "Render to texture not supported properly yet" );
|
nkeynes@103 | 245 | } else {
|
nkeynes@103 | 246 | render_addr = (render_addr & 0x00FFFFFF) + PVR2_RAM_BASE;
|
nkeynes@103 | 247 | render_to_tex = FALSE;
|
nkeynes@103 | 248 | }
|
nkeynes@128 | 249 |
|
nkeynes@191 | 250 | float bgplanez = MMIO_READF( PVR2, RENDER_FARCLIP );
|
nkeynes@191 | 251 | uint32_t render_mode = MMIO_READ( PVR2, RENDER_MODE );
|
nkeynes@103 | 252 | int width = 640; /* FIXME - get this from the tile buffer */
|
nkeynes@103 | 253 | int height = 480;
|
nkeynes@103 | 254 | int colour_format = pvr2_render_colour_format[render_mode&0x07];
|
nkeynes@103 | 255 | pvr2_render_prepare_context( render_addr, width, height, colour_format,
|
nkeynes@128 | 256 | bgplanez, render_to_tex );
|
nkeynes@103 | 257 |
|
nkeynes@191 | 258 | int clip_x = MMIO_READ( PVR2, RENDER_HCLIP ) & 0x03FF;
|
nkeynes@191 | 259 | int clip_y = MMIO_READ( PVR2, RENDER_VCLIP ) & 0x03FF;
|
nkeynes@191 | 260 | int clip_width = ((MMIO_READ( PVR2, RENDER_HCLIP ) >> 16) & 0x03FF) - clip_x + 1;
|
nkeynes@191 | 261 | int clip_height= ((MMIO_READ( PVR2, RENDER_VCLIP ) >> 16) & 0x03FF) - clip_y + 1;
|
nkeynes@103 | 262 |
|
nkeynes@103 | 263 | /* Fog setup goes here */
|
nkeynes@103 | 264 |
|
nkeynes@128 | 265 | /* Render the background plane */
|
nkeynes@191 | 266 | uint32_t bgplane_mode = MMIO_READ(PVR2, RENDER_BGPLANE);
|
nkeynes@189 | 267 | uint32_t *display_list =
|
nkeynes@191 | 268 | (uint32_t *)mem_get_region(PVR2_RAM_BASE + MMIO_READ( PVR2, RENDER_POLYBASE ));
|
nkeynes@189 | 269 |
|
nkeynes@189 | 270 | uint32_t *bgplane = display_list + (((bgplane_mode & 0x00FFFFFF)) >> 3) ;
|
nkeynes@219 | 271 | render_backplane( bgplane, width, height, bgplane_mode );
|
nkeynes@128 | 272 |
|
nkeynes@189 | 273 | pvr2_render_tilebuffer( width, height, clip_x, clip_y,
|
nkeynes@189 | 274 | clip_x + clip_width, clip_y + clip_height );
|
nkeynes@103 | 275 |
|
nkeynes@103 | 276 | /* Post-render cleanup and update */
|
nkeynes@103 | 277 |
|
nkeynes@108 | 278 | /* Add frame, fps, etc data */
|
nkeynes@189 | 279 | //glDrawGrid( width, height );
|
nkeynes@132 | 280 | glPrintf( 4, 16, "Frame %d", pvr2_get_frame_count() );
|
nkeynes@103 | 281 | /* Generate end of render event */
|
nkeynes@100 | 282 | asic_event( EVENT_PVR_RENDER_DONE );
|
nkeynes@132 | 283 | DEBUG( "Rendered frame %d", pvr2_get_frame_count() );
|
nkeynes@100 | 284 | }
|
nkeynes@103 | 285 |
|
nkeynes@103 | 286 |
|
nkeynes@103 | 287 | /**
|
nkeynes@103 | 288 | * Flush the indicated render buffer back to PVR. Caller is responsible for
|
nkeynes@103 | 289 | * tracking whether there is actually anything in the buffer.
|
nkeynes@103 | 290 | *
|
nkeynes@103 | 291 | * @param buffer A render buffer indicating the address to store to, and the
|
nkeynes@103 | 292 | * format the data needs to be in.
|
nkeynes@103 | 293 | * @param backBuffer TRUE to flush the back buffer, FALSE for
|
nkeynes@103 | 294 | * the front buffer.
|
nkeynes@103 | 295 | */
|
nkeynes@103 | 296 | void pvr2_render_copy_to_sh4( pvr2_render_buffer_t buffer,
|
nkeynes@103 | 297 | gboolean backBuffer )
|
nkeynes@103 | 298 | {
|
nkeynes@103 | 299 | if( buffer->render_addr == -1 )
|
nkeynes@103 | 300 | return;
|
nkeynes@103 | 301 | GLenum type, format = GL_RGBA;
|
nkeynes@219 | 302 | int line_size = buffer->width, size;
|
nkeynes@103 | 303 |
|
nkeynes@103 | 304 | switch( buffer->colour_format ) {
|
nkeynes@103 | 305 | case COLFMT_RGB565:
|
nkeynes@103 | 306 | type = GL_UNSIGNED_SHORT_5_6_5;
|
nkeynes@103 | 307 | format = GL_RGB;
|
nkeynes@219 | 308 | line_size <<= 1;
|
nkeynes@103 | 309 | break;
|
nkeynes@103 | 310 | case COLFMT_RGB888:
|
nkeynes@103 | 311 | type = GL_UNSIGNED_INT;
|
nkeynes@103 | 312 | format = GL_RGB;
|
nkeynes@219 | 313 | line_size = (line_size<<1)+line_size;
|
nkeynes@103 | 314 | break;
|
nkeynes@103 | 315 | case COLFMT_ARGB1555:
|
nkeynes@103 | 316 | type = GL_UNSIGNED_SHORT_5_5_5_1;
|
nkeynes@219 | 317 | line_size <<= 1;
|
nkeynes@103 | 318 | break;
|
nkeynes@103 | 319 | case COLFMT_ARGB4444:
|
nkeynes@103 | 320 | type = GL_UNSIGNED_SHORT_4_4_4_4;
|
nkeynes@219 | 321 | line_size <<= 1;
|
nkeynes@103 | 322 | break;
|
nkeynes@103 | 323 | case COLFMT_ARGB8888:
|
nkeynes@103 | 324 | type = GL_UNSIGNED_INT_8_8_8_8;
|
nkeynes@219 | 325 | line_size <<= 2;
|
nkeynes@103 | 326 | break;
|
nkeynes@103 | 327 | }
|
nkeynes@219 | 328 | size = line_size * buffer->height;
|
nkeynes@103 | 329 |
|
nkeynes@103 | 330 | if( backBuffer ) {
|
nkeynes@103 | 331 | glFinish();
|
nkeynes@103 | 332 | glReadBuffer( GL_BACK );
|
nkeynes@103 | 333 | } else {
|
nkeynes@103 | 334 | glReadBuffer( GL_FRONT );
|
nkeynes@103 | 335 | }
|
nkeynes@103 | 336 |
|
nkeynes@103 | 337 | if( buffer->render_addr & 0xFF000000 == 0x04000000 ) {
|
nkeynes@103 | 338 | /* Interlaced buffer. Go the double copy... :( */
|
nkeynes@103 | 339 | char target[size];
|
nkeynes@103 | 340 | glReadPixels( 0, 0, buffer->width, buffer->height, format, type, target );
|
nkeynes@103 | 341 | pvr2_vram64_write( buffer->render_addr, target, size );
|
nkeynes@103 | 342 | } else {
|
nkeynes@219 | 343 | /* Regular buffer */
|
nkeynes@219 | 344 | char target[size];
|
nkeynes@103 | 345 | glReadPixels( 0, 0, buffer->width, buffer->height, format, type, target );
|
nkeynes@219 | 346 | pvr2_vram_write_invert( buffer->render_addr, target, size, line_size );
|
nkeynes@103 | 347 | }
|
nkeynes@103 | 348 | }
|
nkeynes@103 | 349 |
|
nkeynes@103 | 350 |
|
nkeynes@103 | 351 | /**
|
nkeynes@103 | 352 | * Copy data from PVR ram into the GL render buffer.
|
nkeynes@103 | 353 | *
|
nkeynes@103 | 354 | * @param buffer A render buffer indicating the address to read from, and the
|
nkeynes@103 | 355 | * format the data is in.
|
nkeynes@103 | 356 | * @param backBuffer TRUE to write the back buffer, FALSE for
|
nkeynes@103 | 357 | * the front buffer.
|
nkeynes@103 | 358 | */
|
nkeynes@103 | 359 | void pvr2_render_copy_from_sh4( pvr2_render_buffer_t buffer,
|
nkeynes@103 | 360 | gboolean backBuffer )
|
nkeynes@103 | 361 | {
|
nkeynes@103 | 362 | if( buffer->render_addr == -1 )
|
nkeynes@103 | 363 | return;
|
nkeynes@103 | 364 | GLenum type, format = GL_RGBA;
|
nkeynes@103 | 365 | int size = buffer->width * buffer->height;
|
nkeynes@103 | 366 |
|
nkeynes@103 | 367 | switch( buffer->colour_format ) {
|
nkeynes@103 | 368 | case COLFMT_RGB565:
|
nkeynes@103 | 369 | type = GL_UNSIGNED_SHORT_5_6_5;
|
nkeynes@103 | 370 | format = GL_RGB;
|
nkeynes@103 | 371 | size <<= 1;
|
nkeynes@103 | 372 | break;
|
nkeynes@103 | 373 | case COLFMT_RGB888:
|
nkeynes@103 | 374 | type = GL_UNSIGNED_INT;
|
nkeynes@103 | 375 | format = GL_RGB;
|
nkeynes@103 | 376 | size = (size<<1)+size;
|
nkeynes@103 | 377 | break;
|
nkeynes@103 | 378 | case COLFMT_ARGB1555:
|
nkeynes@103 | 379 | type = GL_UNSIGNED_SHORT_5_5_5_1;
|
nkeynes@103 | 380 | size <<= 1;
|
nkeynes@103 | 381 | break;
|
nkeynes@103 | 382 | case COLFMT_ARGB4444:
|
nkeynes@103 | 383 | type = GL_UNSIGNED_SHORT_4_4_4_4;
|
nkeynes@103 | 384 | size <<= 1;
|
nkeynes@103 | 385 | break;
|
nkeynes@103 | 386 | case COLFMT_ARGB8888:
|
nkeynes@103 | 387 | type = GL_UNSIGNED_INT_8_8_8_8;
|
nkeynes@103 | 388 | size <<= 2;
|
nkeynes@103 | 389 | break;
|
nkeynes@103 | 390 | }
|
nkeynes@103 | 391 |
|
nkeynes@103 | 392 | if( backBuffer ) {
|
nkeynes@103 | 393 | glDrawBuffer( GL_BACK );
|
nkeynes@103 | 394 | } else {
|
nkeynes@103 | 395 | glDrawBuffer( GL_FRONT );
|
nkeynes@103 | 396 | }
|
nkeynes@103 | 397 |
|
nkeynes@103 | 398 | glRasterPos2i( 0, 0 );
|
nkeynes@103 | 399 | if( buffer->render_addr & 0xFF000000 == 0x04000000 ) {
|
nkeynes@103 | 400 | /* Interlaced buffer. Go the double copy... :( */
|
nkeynes@103 | 401 | char target[size];
|
nkeynes@103 | 402 | pvr2_vram64_read( target, buffer->render_addr, size );
|
nkeynes@103 | 403 | glDrawPixels( buffer->width, buffer->height,
|
nkeynes@103 | 404 | format, type, target );
|
nkeynes@103 | 405 | } else {
|
nkeynes@103 | 406 | /* Regular buffer - go direct */
|
nkeynes@103 | 407 | char *target = mem_get_region( buffer->render_addr );
|
nkeynes@103 | 408 | glDrawPixels( buffer->width, buffer->height,
|
nkeynes@103 | 409 | format, type, target );
|
nkeynes@103 | 410 | }
|
nkeynes@103 | 411 | }
|