filename | src/pvr2/render.c |
changeset | 352:f0df7a6d4703 |
prev | 338:8c68d9097846 |
next | 429:e581b90c3fb3 |
author | nkeynes |
date | Sun Feb 11 10:09:32 2007 +0000 (12 years ago) |
permissions | -rw-r--r-- |
last change | Bug 27: Implement opengl framebuffer objects Rewrite much of the final video output stage. Now uses generic "render buffers", implemented on GL using framebuffer objects + textures. |
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nkeynes@100 | 1 | /** |
nkeynes@352 | 2 | * $Id: render.c,v 1.24 2007-02-11 10:09:32 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@108 | 23 | int pvr2_render_font_list = -1; |
nkeynes@132 | 24 | int pvr2_render_trace = 0; |
nkeynes@108 | 25 | |
nkeynes@132 | 26 | int glPrintf( int x, int y, const char *fmt, ... ) |
nkeynes@108 | 27 | { |
nkeynes@108 | 28 | va_list ap; /* our argument pointer */ |
nkeynes@108 | 29 | char buf[256]; |
nkeynes@108 | 30 | int len; |
nkeynes@108 | 31 | if (fmt == NULL) /* if there is no string to draw do nothing */ |
nkeynes@108 | 32 | return; |
nkeynes@108 | 33 | va_start(ap, fmt); |
nkeynes@108 | 34 | len = vsnprintf(buf, sizeof(buf), fmt, ap); |
nkeynes@108 | 35 | va_end(ap); |
nkeynes@108 | 36 | |
nkeynes@108 | 37 | |
nkeynes@108 | 38 | glPushAttrib(GL_LIST_BIT); |
nkeynes@132 | 39 | glDisable( GL_DEPTH_TEST ); |
nkeynes@132 | 40 | glDisable( GL_BLEND ); |
nkeynes@132 | 41 | glDisable( GL_TEXTURE_2D ); |
nkeynes@132 | 42 | glDisable( GL_ALPHA_TEST ); |
nkeynes@189 | 43 | glDisable( GL_CULL_FACE ); |
nkeynes@108 | 44 | glListBase(pvr2_render_font_list - 32); |
nkeynes@132 | 45 | glColor3f( 1.0, 1.0, 1.0 ); |
nkeynes@132 | 46 | glRasterPos2i( x, y ); |
nkeynes@108 | 47 | glCallLists(len, GL_UNSIGNED_BYTE, buf); |
nkeynes@108 | 48 | glPopAttrib(); |
nkeynes@108 | 49 | |
nkeynes@108 | 50 | return len; |
nkeynes@108 | 51 | } |
nkeynes@108 | 52 | |
nkeynes@189 | 53 | void glDrawGrid( int width, int height ) |
nkeynes@189 | 54 | { |
nkeynes@189 | 55 | int i; |
nkeynes@189 | 56 | glDisable( GL_DEPTH_TEST ); |
nkeynes@189 | 57 | glLineWidth(1); |
nkeynes@189 | 58 | |
nkeynes@189 | 59 | glBegin( GL_LINES ); |
nkeynes@189 | 60 | glColor4f( 1.0, 1.0, 1.0, 1.0 ); |
nkeynes@189 | 61 | for( i=32; i<width; i+=32 ) { |
nkeynes@189 | 62 | glVertex3f( i, 0.0, 3.0 ); |
nkeynes@189 | 63 | glVertex3f( i,height-1, 3.0 ); |
nkeynes@189 | 64 | } |
nkeynes@189 | 65 | |
nkeynes@189 | 66 | for( i=32; i<height; i+=32 ) { |
nkeynes@189 | 67 | glVertex3f( 0.0, i, 3.0 ); |
nkeynes@189 | 68 | glVertex3f( width, i, 3.0 ); |
nkeynes@189 | 69 | } |
nkeynes@189 | 70 | glEnd(); |
nkeynes@189 | 71 | |
nkeynes@189 | 72 | } |
nkeynes@189 | 73 | |
nkeynes@103 | 74 | /** |
nkeynes@103 | 75 | * Prepare the OpenGL context to receive instructions for a new frame. |
nkeynes@103 | 76 | */ |
nkeynes@352 | 77 | static void pvr2_render_prepare_context( render_buffer_t buffer, |
nkeynes@352 | 78 | float bgplanez, float nearz ) |
nkeynes@103 | 79 | { |
nkeynes@103 | 80 | /* Select and initialize the render context */ |
nkeynes@352 | 81 | display_driver->set_render_target(buffer); |
nkeynes@103 | 82 | |
nkeynes@132 | 83 | if( pvr2_render_font_list == -1 ) { |
nkeynes@132 | 84 | pvr2_render_font_list = video_glx_load_font( "-*-helvetica-*-r-normal--16-*-*-*-p-*-iso8859-1"); |
nkeynes@132 | 85 | } |
nkeynes@132 | 86 | |
nkeynes@337 | 87 | pvr2_check_palette_changed(); |
nkeynes@337 | 88 | |
nkeynes@103 | 89 | /* Setup the display model */ |
nkeynes@103 | 90 | glShadeModel(GL_SMOOTH); |
nkeynes@103 | 91 | glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST); |
nkeynes@103 | 92 | glMatrixMode(GL_PROJECTION); |
nkeynes@103 | 93 | glLoadIdentity(); |
nkeynes@352 | 94 | glOrtho( 0, buffer->width, buffer->height, 0, -bgplanez, -nearz ); |
nkeynes@103 | 95 | glMatrixMode(GL_MODELVIEW); |
nkeynes@103 | 96 | glLoadIdentity(); |
nkeynes@108 | 97 | glCullFace( GL_BACK ); |
nkeynes@308 | 98 | glEnable( GL_BLEND ); |
nkeynes@103 | 99 | |
nkeynes@103 | 100 | /* Clear out the buffers */ |
nkeynes@189 | 101 | glDisable( GL_SCISSOR_TEST ); |
nkeynes@103 | 102 | glClearColor(0.0f, 0.0f, 0.0f, 0.0f); |
nkeynes@299 | 103 | glClearDepth(0); |
nkeynes@103 | 104 | glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT ); |
nkeynes@103 | 105 | } |
nkeynes@103 | 106 | |
nkeynes@128 | 107 | /** |
nkeynes@103 | 108 | * Render a complete scene into the OpenGL back buffer. |
nkeynes@103 | 109 | * Note: this will probably need to be broken up eventually once timings are |
nkeynes@100 | 110 | * determined. |
nkeynes@100 | 111 | */ |
nkeynes@352 | 112 | void pvr2_render_scene( render_buffer_t buffer ) |
nkeynes@100 | 113 | { |
nkeynes@103 | 114 | struct tile_descriptor *tile_desc = |
nkeynes@191 | 115 | (struct tile_descriptor *)mem_get_region(PVR2_RAM_BASE + MMIO_READ( PVR2, RENDER_TILEBASE )); |
nkeynes@100 | 116 | |
nkeynes@331 | 117 | float bgplanez = 1/MMIO_READF( PVR2, RENDER_FARCLIP ); |
nkeynes@352 | 118 | pvr2_render_prepare_context( buffer, bgplanez, 0 ); |
nkeynes@103 | 119 | |
nkeynes@191 | 120 | int clip_x = MMIO_READ( PVR2, RENDER_HCLIP ) & 0x03FF; |
nkeynes@191 | 121 | int clip_y = MMIO_READ( PVR2, RENDER_VCLIP ) & 0x03FF; |
nkeynes@191 | 122 | int clip_width = ((MMIO_READ( PVR2, RENDER_HCLIP ) >> 16) & 0x03FF) - clip_x + 1; |
nkeynes@191 | 123 | int clip_height= ((MMIO_READ( PVR2, RENDER_VCLIP ) >> 16) & 0x03FF) - clip_y + 1; |
nkeynes@103 | 124 | |
nkeynes@352 | 125 | /* Fog setup goes here? */ |
nkeynes@103 | 126 | |
nkeynes@128 | 127 | /* Render the background plane */ |
nkeynes@352 | 128 | |
nkeynes@191 | 129 | uint32_t bgplane_mode = MMIO_READ(PVR2, RENDER_BGPLANE); |
nkeynes@189 | 130 | uint32_t *display_list = |
nkeynes@191 | 131 | (uint32_t *)mem_get_region(PVR2_RAM_BASE + MMIO_READ( PVR2, RENDER_POLYBASE )); |
nkeynes@189 | 132 | |
nkeynes@189 | 133 | uint32_t *bgplane = display_list + (((bgplane_mode & 0x00FFFFFF)) >> 3) ; |
nkeynes@352 | 134 | render_backplane( bgplane, buffer->width, buffer->height, bgplane_mode ); |
nkeynes@352 | 135 | |
nkeynes@352 | 136 | pvr2_render_tilebuffer( buffer->width, buffer->height, clip_x, clip_y, |
nkeynes@189 | 137 | clip_x + clip_width, clip_y + clip_height ); |
nkeynes@352 | 138 | |
nkeynes@352 | 139 | DEBUG( "Rendered frame %d to %08X", pvr2_get_frame_count(), buffer->address ); |
nkeynes@100 | 140 | } |
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