filename | src/drivers/video_gdk.c |
changeset | 635:76c63aac3590 |
next | 636:2ccf94f966fc |
author | nkeynes |
date | Thu Feb 14 13:54:11 2008 +0000 (12 years ago) |
branch | lxdream-render |
permissions | -rw-r--r-- |
last change | Commit render work in progress. Main changes: * Preliminary OSMesa support * Move the generic gl code out to pvr2/ * Implement scene data structure + reader * Remove the 1/z adjustments |
file | annotate | diff | log | raw |
1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +00001.2 +++ b/src/drivers/video_gdk.c Thu Feb 14 13:54:11 2008 +00001.3 @@ -0,0 +1,203 @@1.4 +/**1.5 + * $Id: video_gtk.c 636 2008-01-30 11:31:21Z nkeynes $1.6 + *1.7 + * The PC side of the video support (responsible for actually displaying /1.8 + * rendering frames)1.9 + *1.10 + * Copyright (c) 2005 Nathan Keynes.1.11 + *1.12 + * This program is free software; you can redistribute it and/or modify1.13 + * it under the terms of the GNU General Public License as published by1.14 + * the Free Software Foundation; either version 2 of the License, or1.15 + * (at your option) any later version.1.16 + *1.17 + * This program is distributed in the hope that it will be useful,1.18 + * but WITHOUT ANY WARRANTY; without even the implied warranty of1.19 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the1.20 + * GNU General Public License for more details.1.21 + */1.22 +#include <assert.h>1.23 +#include <stdlib.h>1.24 +#include <gdk/gdk.h>1.25 +#include <gdk-pixbuf/gdk-pixbuf.h>1.26 +#include <gtk/gtkwidget.h>1.27 +#include <GL/osmesa.h>1.28 +#include "lxdream.h"1.29 +#include "display.h"1.30 +1.31 +#define MAX_PIXBUF 161.32 +1.33 +extern GtkWidget *gtk_video_win;1.34 +extern int video_width, video_height;1.35 +1.36 +static render_buffer_t gdk_pixbuf_create_render_buffer( uint32_t width, uint32_t height );1.37 +static void gdk_pixbuf_destroy_render_buffer( render_buffer_t buffer );1.38 +static gboolean gdk_pixbuf_set_render_target( render_buffer_t buffer );1.39 +static gboolean gdk_pixbuf_display_render_buffer( render_buffer_t buffer );1.40 +static void gdk_pixbuf_load_frame_buffer( frame_buffer_t frame, render_buffer_t buffer );1.41 +static gboolean gdk_pixbuf_display_blank( uint32_t colour );1.42 +static gboolean gdk_pixbuf_read_render_buffer( unsigned char *target, render_buffer_t buffer, int rowstride, int format );1.43 +1.44 +static void *pixbuf_array[MAX_PIXBUF];1.45 +unsigned int pixbuf_max = 0;1.46 +OSMesaContext osmesa_context = NULL;1.47 +1.48 +void video_gdk_init_driver( display_driver_t driver )1.49 +{1.50 + pixbuf_max = 0;1.51 + driver->create_render_buffer = gdk_pixbuf_create_render_buffer;1.52 + driver->destroy_render_buffer = gdk_pixbuf_destroy_render_buffer;1.53 + driver->set_render_target = gdk_pixbuf_set_render_target;1.54 + driver->display_render_buffer = gdk_pixbuf_display_render_buffer;1.55 + driver->load_frame_buffer = gdk_pixbuf_load_frame_buffer;1.56 + driver->display_blank = gdk_pixbuf_display_blank;1.57 + driver->read_render_buffer = gdk_pixbuf_read_render_buffer;1.58 +1.59 + osmesa_context = OSMesaCreateContextExt( OSMESA_RGBA, 32, 0, 0, 0 );1.60 + OSMesaMakeCurrent( osmesa_context, NULL, GL_UNSIGNED_BYTE, 640, 480 );1.61 + texcache_gl_init();1.62 +}1.63 +1.64 +int video_gdk_find_free()1.65 +{1.66 + unsigned int i;1.67 + for( i=0; i<pixbuf_max; i++ ) {1.68 + if( pixbuf_array[i] == NULL ) {1.69 + return i;1.70 + }1.71 + }1.72 + if( i < MAX_PIXBUF ) {1.73 + return pixbuf_max++;1.74 + }1.75 + return -1;1.76 +}1.77 +1.78 +void video_gdk_shutdown()1.79 +{1.80 + unsigned int i;1.81 + for( i=0; i<pixbuf_max; i++ ) {1.82 + if( pixbuf_array[i] != NULL ) {1.83 + g_free(pixbuf_array[i]);1.84 + pixbuf_array[i] = NULL;1.85 + }1.86 + }1.87 + pixbuf_max = 0;1.88 + OSMesaDestroyContext( osmesa_context );1.89 +}1.90 +1.91 +1.92 +static render_buffer_t gdk_pixbuf_create_render_buffer( uint32_t width, uint32_t height )1.93 +{1.94 + render_buffer_t buf = g_malloc0(sizeof(struct render_buffer));1.95 + gboolean alpha = FALSE;1.96 + buf->width = width;1.97 + buf->height = height;1.98 + buf->buf_id = video_gdk_find_free();1.99 + pixbuf_array[buf->buf_id] = g_malloc0( width * height * 4 );1.100 + return buf;1.101 +}1.102 +1.103 +static void gdk_pixbuf_destroy_render_buffer( render_buffer_t buffer )1.104 +{1.105 + g_free(pixbuf_array[buffer->buf_id] );1.106 + pixbuf_array[buffer->buf_id] = NULL;1.107 + if( buffer->buf_id == (pixbuf_max-1) ) {1.108 + pixbuf_max--;1.109 + }1.110 +}1.111 +1.112 +static gboolean gdk_pixbuf_display_render_buffer( render_buffer_t buffer )1.113 +{1.114 + glFinish();1.115 +1.116 + void *pb = pixbuf_array[buffer->buf_id];1.117 + GdkGC *gc = gtk_video_win->style->fg_gc[GTK_STATE_NORMAL];1.118 + GdkColor black = {0,0,0,0};1.119 +1.120 + assert(gc);1.121 +1.122 + int x1=0,y1=0,x2=video_width,y2=video_height;1.123 +1.124 + int ah = video_width * 0.75;1.125 +1.126 +1.127 + if( ah > video_height ) {1.128 + int w = (video_height/0.75);1.129 + x1 = (video_width - w)/2;1.130 + x2 -= x1;1.131 + gdk_gc_set_foreground( gc, &black );1.132 + gdk_gc_set_background( gc, &black );1.133 + gdk_draw_rectangle( gtk_video_win->window, gc, TRUE, 0, 0, x1, video_height );1.134 + gdk_draw_rectangle( gtk_video_win->window, gc, TRUE, x2, 0, video_width, video_height );1.135 + } else if( ah < video_height ) {1.136 + y1 = (video_height - ah)/2;1.137 + y2 -= y1;1.138 + gdk_gc_set_foreground( gc, &black );1.139 + gdk_gc_set_background( gc, &black );1.140 + gdk_draw_rectangle( gtk_video_win->window, gc, TRUE, 0, 0, video_width, y1 );1.141 + gdk_draw_rectangle( gtk_video_win->window, gc, TRUE, 0, y2, video_width, video_height );1.142 + }1.143 + int w = x2-x1;1.144 + int h = y2-y1;1.145 +1.146 + if( w != buffer->width || h != buffer->height ) {1.147 + gdk_draw_rgb_32_image( gtk_video_win->window, gc, x1, y1, buffer->width, buffer->height, GDK_RGB_DITHER_NONE,1.148 + pb, buffer->width*4 );1.149 + } else {1.150 + gdk_draw_rgb_32_image( gtk_video_win->window, gc, x1, y1, buffer->width, buffer->height, GDK_RGB_DITHER_NONE,1.151 + pb, buffer->width*4 );1.152 + }1.153 +}1.154 +1.155 +static gboolean gdk_pixbuf_display_blank( uint32_t colour )1.156 +{1.157 + GdkGC *gc = gtk_video_win->style->fg_gc[GTK_STATE_NORMAL];1.158 + GdkColor col = { };1.159 +1.160 + gdk_gc_set_foreground( gc, &col );1.161 + gdk_gc_set_background( gc, &col );1.162 + gdk_draw_rectangle( gtk_video_win->window, gc, TRUE, 0, 0, video_width, video_height );1.163 + return TRUE;1.164 +}1.165 +1.166 +static gboolean gdk_pixbuf_set_render_target( render_buffer_t buffer )1.167 +{1.168 + glFinish();1.169 + void *pb = pixbuf_array[buffer->buf_id];1.170 + OSMesaMakeCurrent( osmesa_context, pb, GL_UNSIGNED_BYTE,1.171 + buffer->width, buffer->height );1.172 + //OSMesaPixelStore( OSMESA_Y_UP, 0 );1.173 + glViewport( 0, 0, buffer->width, buffer->height );1.174 + glDrawBuffer(GL_FRONT);1.175 + return TRUE;1.176 +}1.177 +1.178 +static void gdk_pixbuf_load_frame_buffer( frame_buffer_t frame, render_buffer_t buffer )1.179 +{1.180 + glFinish();1.181 + void *pb = pixbuf_array[buffer->buf_id];1.182 + OSMesaMakeCurrent( osmesa_context, pb, GL_UNSIGNED_BYTE,1.183 + buffer->width, buffer->height );1.184 + GLenum type = colour_formats[frame->colour_format].type;1.185 + GLenum format = colour_formats[frame->colour_format].format;1.186 + int bpp = colour_formats[frame->colour_format].bpp;1.187 + int rowstride = (frame->rowstride / bpp) - frame->width;1.188 +1.189 + gl_reset_state();1.190 + glPixelStorei( GL_UNPACK_ROW_LENGTH, rowstride );1.191 + glRasterPos2f(0.375, frame->height-0.375);1.192 + glPixelZoom( 1.0, 1.0 );1.193 + glDrawPixels( frame->width, frame->height, format, type, frame->data );1.194 + glFlush();1.195 +}1.196 +1.197 +static gboolean gdk_pixbuf_read_render_buffer( unsigned char *target, render_buffer_t buffer, int rowstride, int format )1.198 +{1.199 + glFinish();1.200 + void *pb = pixbuf_array[buffer->buf_id];1.201 + OSMesaMakeCurrent( osmesa_context, pb, GL_UNSIGNED_BYTE,1.202 + buffer->width, buffer->height );1.203 + glReadBuffer( GL_FRONT );1.204 + return gl_read_render_buffer( target, buffer, rowstride, format );1.205 +1.206 +}
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