filename | src/pvr2/render.c |
changeset | 338:8c68d9097846 |
prev | 337:cdd757aa8e8c |
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author | nkeynes |
date | Mon Jan 29 11:24:44 2007 +0000 (17 years ago) |
permissions | -rw-r--r-- |
last change | Get render size from the tile segment array Set near clip to just 0 rather than scanning the scene Fixup modulate RGB to force fragment alpha to 1.0 Add some debugging fprintfs |
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nkeynes@100 | 1 | /** |
nkeynes@338 | 2 | * $Id: render.c,v 1.23 2007-01-29 11:24:44 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 | |
nkeynes@103 | 23 | struct pvr2_render_buffer front_buffer; |
nkeynes@103 | 24 | struct pvr2_render_buffer back_buffer; |
nkeynes@103 | 25 | |
nkeynes@128 | 26 | typedef struct pvr2_bgplane_packed { |
nkeynes@128 | 27 | uint32_t poly_cfg, poly_mode; |
nkeynes@128 | 28 | uint32_t texture_mode; |
nkeynes@128 | 29 | float x1, y1, z1; |
nkeynes@128 | 30 | uint32_t colour1; |
nkeynes@128 | 31 | float x2, y2, z2; |
nkeynes@128 | 32 | uint32_t colour2; |
nkeynes@128 | 33 | float x3, y3, z3; |
nkeynes@128 | 34 | uint32_t colour3; |
nkeynes@128 | 35 | } *pvr2_bgplane_packed_t; |
nkeynes@128 | 36 | |
nkeynes@108 | 37 | int pvr2_render_font_list = -1; |
nkeynes@132 | 38 | int pvr2_render_trace = 0; |
nkeynes@108 | 39 | |
nkeynes@132 | 40 | int glPrintf( int x, int y, const char *fmt, ... ) |
nkeynes@108 | 41 | { |
nkeynes@108 | 42 | va_list ap; /* our argument pointer */ |
nkeynes@108 | 43 | char buf[256]; |
nkeynes@108 | 44 | int len; |
nkeynes@108 | 45 | if (fmt == NULL) /* if there is no string to draw do nothing */ |
nkeynes@108 | 46 | return; |
nkeynes@108 | 47 | va_start(ap, fmt); |
nkeynes@108 | 48 | len = vsnprintf(buf, sizeof(buf), fmt, ap); |
nkeynes@108 | 49 | va_end(ap); |
nkeynes@108 | 50 | |
nkeynes@108 | 51 | |
nkeynes@108 | 52 | glPushAttrib(GL_LIST_BIT); |
nkeynes@132 | 53 | glDisable( GL_DEPTH_TEST ); |
nkeynes@132 | 54 | glDisable( GL_BLEND ); |
nkeynes@132 | 55 | glDisable( GL_TEXTURE_2D ); |
nkeynes@132 | 56 | glDisable( GL_ALPHA_TEST ); |
nkeynes@189 | 57 | glDisable( GL_CULL_FACE ); |
nkeynes@108 | 58 | glListBase(pvr2_render_font_list - 32); |
nkeynes@132 | 59 | glColor3f( 1.0, 1.0, 1.0 ); |
nkeynes@132 | 60 | glRasterPos2i( x, y ); |
nkeynes@108 | 61 | glCallLists(len, GL_UNSIGNED_BYTE, buf); |
nkeynes@108 | 62 | glPopAttrib(); |
nkeynes@108 | 63 | |
nkeynes@108 | 64 | return len; |
nkeynes@108 | 65 | } |
nkeynes@108 | 66 | |
nkeynes@189 | 67 | void glDrawGrid( int width, int height ) |
nkeynes@189 | 68 | { |
nkeynes@189 | 69 | int i; |
nkeynes@189 | 70 | glDisable( GL_DEPTH_TEST ); |
nkeynes@189 | 71 | glLineWidth(1); |
nkeynes@189 | 72 | |
nkeynes@189 | 73 | glBegin( GL_LINES ); |
nkeynes@189 | 74 | glColor4f( 1.0, 1.0, 1.0, 1.0 ); |
nkeynes@189 | 75 | for( i=32; i<width; i+=32 ) { |
nkeynes@189 | 76 | glVertex3f( i, 0.0, 3.0 ); |
nkeynes@189 | 77 | glVertex3f( i,height-1, 3.0 ); |
nkeynes@189 | 78 | } |
nkeynes@189 | 79 | |
nkeynes@189 | 80 | for( i=32; i<height; i+=32 ) { |
nkeynes@189 | 81 | glVertex3f( 0.0, i, 3.0 ); |
nkeynes@189 | 82 | glVertex3f( width, i, 3.0 ); |
nkeynes@189 | 83 | } |
nkeynes@189 | 84 | glEnd(); |
nkeynes@189 | 85 | |
nkeynes@189 | 86 | } |
nkeynes@189 | 87 | |
nkeynes@103 | 88 | |
nkeynes@103 | 89 | gboolean pvr2_render_init( void ) |
nkeynes@103 | 90 | { |
nkeynes@103 | 91 | front_buffer.render_addr = -1; |
nkeynes@103 | 92 | back_buffer.render_addr = -1; |
nkeynes@103 | 93 | } |
nkeynes@103 | 94 | |
nkeynes@103 | 95 | /** |
nkeynes@161 | 96 | * Invalidate any caching on the supplied address. Specifically, if it falls |
nkeynes@161 | 97 | * within either the front buffer or back buffer, flush the buffer back to |
nkeynes@161 | 98 | * PVR2 ram (note that front buffer flush may be corrupt under some |
nkeynes@161 | 99 | * circumstances). |
nkeynes@161 | 100 | */ |
nkeynes@315 | 101 | gboolean pvr2_render_buffer_invalidate( sh4addr_t address ) |
nkeynes@161 | 102 | { |
nkeynes@161 | 103 | address = address & 0x1FFFFFFF; |
nkeynes@161 | 104 | if( front_buffer.render_addr != -1 && |
nkeynes@161 | 105 | front_buffer.render_addr <= address && |
nkeynes@161 | 106 | (front_buffer.render_addr + front_buffer.size) > address ) { |
nkeynes@315 | 107 | pvr2_render_buffer_copy_to_sh4( &front_buffer, FALSE ); |
nkeynes@161 | 108 | front_buffer.render_addr = -1; |
nkeynes@161 | 109 | return TRUE; |
nkeynes@161 | 110 | } else if( back_buffer.render_addr != -1 && |
nkeynes@161 | 111 | back_buffer.render_addr <= address && |
nkeynes@161 | 112 | (back_buffer.render_addr + back_buffer.size) > address ) { |
nkeynes@315 | 113 | pvr2_render_buffer_copy_to_sh4( &back_buffer, TRUE ); |
nkeynes@161 | 114 | back_buffer.render_addr = -1; |
nkeynes@161 | 115 | return TRUE; |
nkeynes@161 | 116 | } |
nkeynes@161 | 117 | return FALSE; |
nkeynes@161 | 118 | } |
nkeynes@161 | 119 | |
nkeynes@161 | 120 | /** |
nkeynes@103 | 121 | * Display a rendered frame if one is available. |
nkeynes@103 | 122 | * @param address An address in PVR ram (0500000 range). |
nkeynes@103 | 123 | * @return TRUE if a frame was available to be displayed, otherwise false. |
nkeynes@103 | 124 | */ |
nkeynes@103 | 125 | gboolean pvr2_render_display_frame( uint32_t address ) |
nkeynes@103 | 126 | { |
nkeynes@103 | 127 | if( front_buffer.render_addr == address ) { |
nkeynes@103 | 128 | /* Current front buffer is already displayed, so do nothing |
nkeynes@103 | 129 | * and tell the caller that all is well. |
nkeynes@103 | 130 | */ |
nkeynes@103 | 131 | return TRUE; |
nkeynes@103 | 132 | } |
nkeynes@103 | 133 | if( back_buffer.render_addr == address ) { |
nkeynes@103 | 134 | /* The more useful case - back buffer is to be displayed. Swap |
nkeynes@103 | 135 | * the buffers |
nkeynes@103 | 136 | */ |
nkeynes@144 | 137 | display_driver->display_back_buffer(); |
nkeynes@103 | 138 | front_buffer = back_buffer; |
nkeynes@103 | 139 | back_buffer.render_addr = -1; |
nkeynes@103 | 140 | return TRUE; |
nkeynes@103 | 141 | } |
nkeynes@103 | 142 | return FALSE; |
nkeynes@108 | 143 | } |
nkeynes@103 | 144 | |
nkeynes@103 | 145 | /** |
nkeynes@103 | 146 | * Prepare the OpenGL context to receive instructions for a new frame. |
nkeynes@103 | 147 | */ |
nkeynes@103 | 148 | static void pvr2_render_prepare_context( sh4addr_t render_addr, |
nkeynes@103 | 149 | uint32_t width, uint32_t height, |
nkeynes@103 | 150 | uint32_t colour_format, |
nkeynes@322 | 151 | float bgplanez, float nearz, |
nkeynes@103 | 152 | gboolean texture_target ) |
nkeynes@103 | 153 | { |
nkeynes@103 | 154 | /* Select and initialize the render context */ |
nkeynes@144 | 155 | display_driver->set_render_format( width, height, colour_format, texture_target ); |
nkeynes@103 | 156 | |
nkeynes@132 | 157 | if( pvr2_render_font_list == -1 ) { |
nkeynes@132 | 158 | pvr2_render_font_list = video_glx_load_font( "-*-helvetica-*-r-normal--16-*-*-*-p-*-iso8859-1"); |
nkeynes@132 | 159 | } |
nkeynes@132 | 160 | |
nkeynes@103 | 161 | if( back_buffer.render_addr != -1 && |
nkeynes@103 | 162 | back_buffer.render_addr != render_addr ) { |
nkeynes@103 | 163 | /* There's a current back buffer, and we're rendering somewhere else - |
nkeynes@103 | 164 | * flush the back buffer back to vram and start a new back buffer |
nkeynes@103 | 165 | */ |
nkeynes@315 | 166 | pvr2_render_buffer_copy_to_sh4( &back_buffer, TRUE ); |
nkeynes@103 | 167 | } |
nkeynes@103 | 168 | |
nkeynes@103 | 169 | if( front_buffer.render_addr == render_addr ) { |
nkeynes@103 | 170 | /* In case we've been asked to render to the current front buffer - |
nkeynes@103 | 171 | * invalidate the front buffer and render to the back buffer, ensuring |
nkeynes@103 | 172 | * we swap at the next frame display. |
nkeynes@103 | 173 | */ |
nkeynes@103 | 174 | front_buffer.render_addr = -1; |
nkeynes@103 | 175 | } |
nkeynes@103 | 176 | back_buffer.render_addr = render_addr; |
nkeynes@103 | 177 | back_buffer.width = width; |
nkeynes@103 | 178 | back_buffer.height = height; |
nkeynes@103 | 179 | back_buffer.colour_format = colour_format; |
nkeynes@333 | 180 | back_buffer.scale = MMIO_READ( PVR2, RENDER_SCALER ); |
nkeynes@161 | 181 | back_buffer.size = width * height * colour_format_bytes[colour_format]; |
nkeynes@103 | 182 | |
nkeynes@337 | 183 | pvr2_check_palette_changed(); |
nkeynes@337 | 184 | |
nkeynes@103 | 185 | /* Setup the display model */ |
nkeynes@103 | 186 | glDrawBuffer(GL_BACK); |
nkeynes@103 | 187 | glShadeModel(GL_SMOOTH); |
nkeynes@103 | 188 | glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST); |
nkeynes@103 | 189 | glViewport( 0, 0, width, height ); |
nkeynes@103 | 190 | glMatrixMode(GL_PROJECTION); |
nkeynes@103 | 191 | glLoadIdentity(); |
nkeynes@331 | 192 | glOrtho( 0, width, height, 0, -bgplanez, -nearz ); |
nkeynes@103 | 193 | glMatrixMode(GL_MODELVIEW); |
nkeynes@103 | 194 | glLoadIdentity(); |
nkeynes@108 | 195 | glCullFace( GL_BACK ); |
nkeynes@308 | 196 | glEnable( GL_BLEND ); |
nkeynes@103 | 197 | |
nkeynes@103 | 198 | /* Clear out the buffers */ |
nkeynes@189 | 199 | glDisable( GL_SCISSOR_TEST ); |
nkeynes@103 | 200 | glClearColor(0.0f, 0.0f, 0.0f, 0.0f); |
nkeynes@299 | 201 | glClearDepth(0); |
nkeynes@103 | 202 | glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT ); |
nkeynes@308 | 203 | |
nkeynes@103 | 204 | } |
nkeynes@103 | 205 | |
nkeynes@128 | 206 | /** |
nkeynes@103 | 207 | * Render a complete scene into the OpenGL back buffer. |
nkeynes@103 | 208 | * Note: this will probably need to be broken up eventually once timings are |
nkeynes@100 | 209 | * determined. |
nkeynes@100 | 210 | */ |
nkeynes@103 | 211 | void pvr2_render_scene( ) |
nkeynes@100 | 212 | { |
nkeynes@103 | 213 | struct tile_descriptor *tile_desc = |
nkeynes@191 | 214 | (struct tile_descriptor *)mem_get_region(PVR2_RAM_BASE + MMIO_READ( PVR2, RENDER_TILEBASE )); |
nkeynes@100 | 215 | |
nkeynes@191 | 216 | uint32_t render_addr = MMIO_READ( PVR2, RENDER_ADDR1 ); |
nkeynes@103 | 217 | gboolean render_to_tex; |
nkeynes@103 | 218 | if( render_addr & 0x01000000 ) { |
nkeynes@103 | 219 | render_addr = (render_addr & 0x00FFFFFF) + PVR2_RAM_BASE_INT; |
nkeynes@103 | 220 | /* Heuristic - if we're rendering to the interlaced region we're |
nkeynes@103 | 221 | * probably creating a texture rather than rendering actual output. |
nkeynes@103 | 222 | * We can optimise for this case a little |
nkeynes@103 | 223 | */ |
nkeynes@103 | 224 | render_to_tex = TRUE; |
nkeynes@118 | 225 | WARN( "Render to texture not supported properly yet" ); |
nkeynes@103 | 226 | } else { |
nkeynes@103 | 227 | render_addr = (render_addr & 0x00FFFFFF) + PVR2_RAM_BASE; |
nkeynes@103 | 228 | render_to_tex = FALSE; |
nkeynes@103 | 229 | } |
nkeynes@128 | 230 | |
nkeynes@331 | 231 | float bgplanez = 1/MMIO_READF( PVR2, RENDER_FARCLIP ); |
nkeynes@191 | 232 | uint32_t render_mode = MMIO_READ( PVR2, RENDER_MODE ); |
nkeynes@338 | 233 | int width, height; |
nkeynes@338 | 234 | pvr2_render_getsize( &width, &height ); |
nkeynes@103 | 235 | int colour_format = pvr2_render_colour_format[render_mode&0x07]; |
nkeynes@103 | 236 | pvr2_render_prepare_context( render_addr, width, height, colour_format, |
nkeynes@338 | 237 | bgplanez, 0, render_to_tex ); |
nkeynes@103 | 238 | |
nkeynes@191 | 239 | int clip_x = MMIO_READ( PVR2, RENDER_HCLIP ) & 0x03FF; |
nkeynes@191 | 240 | int clip_y = MMIO_READ( PVR2, RENDER_VCLIP ) & 0x03FF; |
nkeynes@191 | 241 | int clip_width = ((MMIO_READ( PVR2, RENDER_HCLIP ) >> 16) & 0x03FF) - clip_x + 1; |
nkeynes@191 | 242 | int clip_height= ((MMIO_READ( PVR2, RENDER_VCLIP ) >> 16) & 0x03FF) - clip_y + 1; |
nkeynes@103 | 243 | |
nkeynes@103 | 244 | /* Fog setup goes here */ |
nkeynes@103 | 245 | |
nkeynes@128 | 246 | /* Render the background plane */ |
nkeynes@191 | 247 | uint32_t bgplane_mode = MMIO_READ(PVR2, RENDER_BGPLANE); |
nkeynes@189 | 248 | uint32_t *display_list = |
nkeynes@191 | 249 | (uint32_t *)mem_get_region(PVR2_RAM_BASE + MMIO_READ( PVR2, RENDER_POLYBASE )); |
nkeynes@189 | 250 | |
nkeynes@189 | 251 | uint32_t *bgplane = display_list + (((bgplane_mode & 0x00FFFFFF)) >> 3) ; |
nkeynes@219 | 252 | render_backplane( bgplane, width, height, bgplane_mode ); |
nkeynes@128 | 253 | |
nkeynes@189 | 254 | pvr2_render_tilebuffer( width, height, clip_x, clip_y, |
nkeynes@189 | 255 | clip_x + clip_width, clip_y + clip_height ); |
nkeynes@103 | 256 | |
nkeynes@103 | 257 | /* Post-render cleanup and update */ |
nkeynes@103 | 258 | |
nkeynes@108 | 259 | /* Add frame, fps, etc data */ |
nkeynes@189 | 260 | //glDrawGrid( width, height ); |
nkeynes@132 | 261 | glPrintf( 4, 16, "Frame %d", pvr2_get_frame_count() ); |
nkeynes@103 | 262 | /* Generate end of render event */ |
nkeynes@100 | 263 | asic_event( EVENT_PVR_RENDER_DONE ); |
nkeynes@337 | 264 | DEBUG( "Rendered frame %d to %08X", pvr2_get_frame_count(), render_addr ); |
nkeynes@100 | 265 | } |
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