224 lines
6.3 KiB
C
224 lines
6.3 KiB
C
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/*
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* GTK UI -- glarea opengl code.
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*
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* Requires 3.16+ (GtkGLArea widget).
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#include "qemu-common.h"
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#include "trace.h"
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#include "ui/console.h"
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#include "ui/gtk.h"
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#include "ui/egl-helpers.h"
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#include "sysemu/sysemu.h"
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static void gtk_gl_area_set_scanout_mode(VirtualConsole *vc, bool scanout)
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{
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if (vc->gfx.scanout_mode == scanout) {
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return;
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}
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vc->gfx.scanout_mode = scanout;
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if (!vc->gfx.scanout_mode) {
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if (vc->gfx.fbo_id) {
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glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT,
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GL_COLOR_ATTACHMENT0_EXT,
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GL_TEXTURE_2D, 0, 0);
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glBindFramebuffer(GL_FRAMEBUFFER_EXT, 0);
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glDeleteFramebuffers(1, &vc->gfx.fbo_id);
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vc->gfx.fbo_id = 0;
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}
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if (vc->gfx.surface) {
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surface_gl_destroy_texture(vc->gfx.gls, vc->gfx.ds);
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surface_gl_create_texture(vc->gfx.gls, vc->gfx.ds);
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}
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}
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}
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/** DisplayState Callbacks (opengl version) **/
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void gd_gl_area_draw(VirtualConsole *vc)
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{
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int ww, wh, y1, y2;
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if (!vc->gfx.gls) {
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return;
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}
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gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
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ww = gtk_widget_get_allocated_width(vc->gfx.drawing_area);
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wh = gtk_widget_get_allocated_height(vc->gfx.drawing_area);
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if (vc->gfx.scanout_mode) {
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if (!vc->gfx.fbo_id) {
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return;
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}
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glBindFramebuffer(GL_READ_FRAMEBUFFER, vc->gfx.fbo_id);
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/* GtkGLArea sets GL_DRAW_FRAMEBUFFER for us */
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glViewport(0, 0, ww, wh);
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y1 = vc->gfx.y0_top ? 0 : vc->gfx.h;
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y2 = vc->gfx.y0_top ? vc->gfx.h : 0;
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glBlitFramebuffer(0, y1, vc->gfx.w, y2,
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0, 0, ww, wh,
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GL_COLOR_BUFFER_BIT, GL_NEAREST);
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} else {
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if (!vc->gfx.ds) {
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return;
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}
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gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
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surface_gl_setup_viewport(vc->gfx.gls, vc->gfx.ds, ww, wh);
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surface_gl_render_texture(vc->gfx.gls, vc->gfx.ds);
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}
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}
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void gd_gl_area_update(DisplayChangeListener *dcl,
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int x, int y, int w, int h)
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{
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VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
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if (!vc->gfx.gls || !vc->gfx.ds) {
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return;
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}
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gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
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surface_gl_update_texture(vc->gfx.gls, vc->gfx.ds, x, y, w, h);
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vc->gfx.glupdates++;
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}
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void gd_gl_area_refresh(DisplayChangeListener *dcl)
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{
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VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
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if (!vc->gfx.gls) {
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if (!gtk_widget_get_realized(vc->gfx.drawing_area)) {
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return;
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}
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gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
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vc->gfx.gls = console_gl_init_context();
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if (vc->gfx.ds) {
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surface_gl_create_texture(vc->gfx.gls, vc->gfx.ds);
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}
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}
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graphic_hw_update(dcl->con);
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if (vc->gfx.glupdates) {
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vc->gfx.glupdates = 0;
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gtk_gl_area_set_scanout_mode(vc, false);
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gtk_gl_area_queue_render(GTK_GL_AREA(vc->gfx.drawing_area));
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}
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}
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void gd_gl_area_switch(DisplayChangeListener *dcl,
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DisplaySurface *surface)
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{
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VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
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bool resized = true;
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trace_gd_switch(vc->label, surface_width(surface), surface_height(surface));
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if (vc->gfx.ds &&
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surface_width(vc->gfx.ds) == surface_width(surface) &&
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surface_height(vc->gfx.ds) == surface_height(surface)) {
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resized = false;
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}
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if (vc->gfx.gls) {
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gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
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surface_gl_destroy_texture(vc->gfx.gls, vc->gfx.ds);
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surface_gl_create_texture(vc->gfx.gls, surface);
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}
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vc->gfx.ds = surface;
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if (resized) {
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gd_update_windowsize(vc);
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}
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}
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QEMUGLContext gd_gl_area_create_context(DisplayChangeListener *dcl,
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QEMUGLParams *params)
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{
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VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
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GdkWindow *window;
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GdkGLContext *ctx;
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GError *err = NULL;
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gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
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window = gtk_widget_get_window(vc->gfx.drawing_area);
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ctx = gdk_window_create_gl_context(window, &err);
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gdk_gl_context_set_required_version(ctx,
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params->major_ver,
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params->minor_ver);
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gdk_gl_context_realize(ctx, &err);
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return ctx;
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}
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void gd_gl_area_destroy_context(DisplayChangeListener *dcl, QEMUGLContext ctx)
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{
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/* FIXME */
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}
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void gd_gl_area_scanout(DisplayChangeListener *dcl,
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uint32_t backing_id, bool backing_y_0_top,
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uint32_t x, uint32_t y,
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uint32_t w, uint32_t h)
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{
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VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
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vc->gfx.x = x;
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vc->gfx.y = y;
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vc->gfx.w = w;
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vc->gfx.h = h;
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vc->gfx.tex_id = backing_id;
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vc->gfx.y0_top = backing_y_0_top;
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gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
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if (vc->gfx.tex_id == 0 || vc->gfx.w == 0 || vc->gfx.h == 0) {
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gtk_gl_area_set_scanout_mode(vc, false);
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return;
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}
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gtk_gl_area_set_scanout_mode(vc, true);
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if (!vc->gfx.fbo_id) {
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glGenFramebuffers(1, &vc->gfx.fbo_id);
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}
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glBindFramebuffer(GL_FRAMEBUFFER_EXT, vc->gfx.fbo_id);
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glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
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GL_TEXTURE_2D, vc->gfx.tex_id, 0);
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}
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void gd_gl_area_scanout_flush(DisplayChangeListener *dcl,
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uint32_t x, uint32_t y, uint32_t w, uint32_t h)
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{
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VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
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gtk_gl_area_queue_render(GTK_GL_AREA(vc->gfx.drawing_area));
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}
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void gtk_gl_area_init(void)
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{
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display_opengl = 1;
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}
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QEMUGLContext gd_gl_area_get_current_context(DisplayChangeListener *dcl)
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{
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return gdk_gl_context_get_current();
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}
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int gd_gl_area_make_current(DisplayChangeListener *dcl,
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QEMUGLContext ctx)
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{
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gdk_gl_context_make_current(ctx);
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return 0;
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}
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