From 0b71a5d5caa4f709d37fa1d7786dffc2c94f8414 Mon Sep 17 00:00:00 2001 From: Gerd Hoffmann Date: Tue, 11 Nov 2014 16:54:45 +0100 Subject: sdl2: add support for display rendering using opengl. Add new sdl2-gl.c file, with display rendering functions using opengl. Signed-off-by: Gerd Hoffmann Reviewed-by: Max Reitz --- ui/sdl2-gl.c | 112 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 112 insertions(+) create mode 100644 ui/sdl2-gl.c (limited to 'ui/sdl2-gl.c') diff --git a/ui/sdl2-gl.c b/ui/sdl2-gl.c new file mode 100644 index 0000000000..b604c0671e --- /dev/null +++ b/ui/sdl2-gl.c @@ -0,0 +1,112 @@ +/* + * QEMU SDL display driver -- opengl support + * + * Copyright (c) 2014 Red Hat + * + * Authors: + * Gerd Hoffmann + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include "qemu-common.h" +#include "ui/console.h" +#include "ui/input.h" +#include "ui/sdl2.h" +#include "sysemu/sysemu.h" + +static void sdl2_gl_render_surface(struct sdl2_console *scon) +{ + int ww, wh; + + SDL_GL_MakeCurrent(scon->real_window, scon->winctx); + + SDL_GetWindowSize(scon->real_window, &ww, &wh); + surface_gl_setup_viewport(scon->gls, scon->surface, ww, wh); + + surface_gl_render_texture(scon->gls, scon->surface); + SDL_GL_SwapWindow(scon->real_window); +} + +void sdl2_gl_update(DisplayChangeListener *dcl, + int x, int y, int w, int h) +{ + struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); + + assert(scon->opengl); + + SDL_GL_MakeCurrent(scon->real_window, scon->winctx); + surface_gl_update_texture(scon->gls, scon->surface, x, y, w, h); + scon->updates++; +} + +void sdl2_gl_switch(DisplayChangeListener *dcl, + DisplaySurface *new_surface) +{ + struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); + DisplaySurface *old_surface = scon->surface; + + assert(scon->opengl); + + SDL_GL_MakeCurrent(scon->real_window, scon->winctx); + surface_gl_destroy_texture(scon->gls, scon->surface); + + scon->surface = new_surface; + + if (!new_surface) { + console_gl_fini_context(scon->gls); + scon->gls = NULL; + sdl2_window_destroy(scon); + return; + } + + if (!scon->real_window) { + sdl2_window_create(scon); + scon->gls = console_gl_init_context(); + } else if (old_surface && + ((surface_width(old_surface) != surface_width(new_surface)) || + (surface_height(old_surface) != surface_height(new_surface)))) { + sdl2_window_resize(scon); + } + + surface_gl_create_texture(scon->gls, scon->surface); +} + +void sdl2_gl_refresh(DisplayChangeListener *dcl) +{ + struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); + + assert(scon->opengl); + + graphic_hw_update(dcl->con); + if (scon->updates && scon->surface) { + scon->updates = 0; + sdl2_gl_render_surface(scon); + } + sdl2_poll_events(scon); +} + +void sdl2_gl_redraw(struct sdl2_console *scon) +{ + assert(scon->opengl); + + if (scon->surface) { + sdl2_gl_render_surface(scon); + } +} -- cgit v1.2.1