diff options
Diffstat (limited to 'qemu/ui/gtk-gl-area.c')
| -rw-r--r-- | qemu/ui/gtk-gl-area.c | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/qemu/ui/gtk-gl-area.c b/qemu/ui/gtk-gl-area.c new file mode 100644 index 000000000..b86ff3cbe --- /dev/null +++ b/qemu/ui/gtk-gl-area.c @@ -0,0 +1,224 @@ +/* + * GTK UI -- glarea opengl code. + * + * Requires 3.16+ (GtkGLArea widget). + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#include "qemu/osdep.h" +#include "qemu-common.h" + +#include "trace.h" + +#include "ui/console.h" +#include "ui/gtk.h" +#include "ui/egl-helpers.h" + +#include "sysemu/sysemu.h" + +static void gtk_gl_area_set_scanout_mode(VirtualConsole *vc, bool scanout) +{ + if (vc->gfx.scanout_mode == scanout) { + return; + } + + vc->gfx.scanout_mode = scanout; + if (!vc->gfx.scanout_mode) { + if (vc->gfx.fbo_id) { + glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, + GL_COLOR_ATTACHMENT0_EXT, + GL_TEXTURE_2D, 0, 0); + glBindFramebuffer(GL_FRAMEBUFFER_EXT, 0); + glDeleteFramebuffers(1, &vc->gfx.fbo_id); + vc->gfx.fbo_id = 0; + } + if (vc->gfx.surface) { + surface_gl_destroy_texture(vc->gfx.gls, vc->gfx.ds); + surface_gl_create_texture(vc->gfx.gls, vc->gfx.ds); + } + } +} + +/** DisplayState Callbacks (opengl version) **/ + +void gd_gl_area_draw(VirtualConsole *vc) +{ + int ww, wh, y1, y2; + + if (!vc->gfx.gls) { + return; + } + + gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area)); + ww = gtk_widget_get_allocated_width(vc->gfx.drawing_area); + wh = gtk_widget_get_allocated_height(vc->gfx.drawing_area); + + if (vc->gfx.scanout_mode) { + if (!vc->gfx.fbo_id) { + return; + } + + glBindFramebuffer(GL_READ_FRAMEBUFFER, vc->gfx.fbo_id); + /* GtkGLArea sets GL_DRAW_FRAMEBUFFER for us */ + + glViewport(0, 0, ww, wh); + y1 = vc->gfx.y0_top ? 0 : vc->gfx.h; + y2 = vc->gfx.y0_top ? vc->gfx.h : 0; + glBlitFramebuffer(0, y1, vc->gfx.w, y2, + 0, 0, ww, wh, + GL_COLOR_BUFFER_BIT, GL_NEAREST); + } else { + if (!vc->gfx.ds) { + return; + } + gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area)); + + surface_gl_setup_viewport(vc->gfx.gls, vc->gfx.ds, ww, wh); + surface_gl_render_texture(vc->gfx.gls, vc->gfx.ds); + } +} + +void gd_gl_area_update(DisplayChangeListener *dcl, + int x, int y, int w, int h) +{ + VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl); + + if (!vc->gfx.gls || !vc->gfx.ds) { + return; + } + + gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area)); + surface_gl_update_texture(vc->gfx.gls, vc->gfx.ds, x, y, w, h); + vc->gfx.glupdates++; +} + +void gd_gl_area_refresh(DisplayChangeListener *dcl) +{ + VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl); + + if (!vc->gfx.gls) { + if (!gtk_widget_get_realized(vc->gfx.drawing_area)) { + return; + } + gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area)); + vc->gfx.gls = console_gl_init_context(); + if (vc->gfx.ds) { + surface_gl_create_texture(vc->gfx.gls, vc->gfx.ds); + } + } + + graphic_hw_update(dcl->con); + + if (vc->gfx.glupdates) { + vc->gfx.glupdates = 0; + gtk_gl_area_set_scanout_mode(vc, false); + gtk_gl_area_queue_render(GTK_GL_AREA(vc->gfx.drawing_area)); + } +} + +void gd_gl_area_switch(DisplayChangeListener *dcl, + DisplaySurface *surface) +{ + VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl); + bool resized = true; + + trace_gd_switch(vc->label, surface_width(surface), surface_height(surface)); + + if (vc->gfx.ds && + surface_width(vc->gfx.ds) == surface_width(surface) && + surface_height(vc->gfx.ds) == surface_height(surface)) { + resized = false; + } + + if (vc->gfx.gls) { + gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area)); + surface_gl_destroy_texture(vc->gfx.gls, vc->gfx.ds); + surface_gl_create_texture(vc->gfx.gls, surface); + } + vc->gfx.ds = surface; + + if (resized) { + gd_update_windowsize(vc); + } +} + +QEMUGLContext gd_gl_area_create_context(DisplayChangeListener *dcl, + QEMUGLParams *params) +{ + VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl); + GdkWindow *window; + GdkGLContext *ctx; + GError *err = NULL; + + gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area)); + window = gtk_widget_get_window(vc->gfx.drawing_area); + ctx = gdk_window_create_gl_context(window, &err); + gdk_gl_context_set_required_version(ctx, + params->major_ver, + params->minor_ver); + gdk_gl_context_realize(ctx, &err); + return ctx; +} + +void gd_gl_area_destroy_context(DisplayChangeListener *dcl, QEMUGLContext ctx) +{ + /* FIXME */ +} + +void gd_gl_area_scanout(DisplayChangeListener *dcl, + uint32_t backing_id, bool backing_y_0_top, + uint32_t x, uint32_t y, + uint32_t w, uint32_t h) +{ + VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl); + + vc->gfx.x = x; + vc->gfx.y = y; + vc->gfx.w = w; + vc->gfx.h = h; + vc->gfx.tex_id = backing_id; + vc->gfx.y0_top = backing_y_0_top; + + gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area)); + + if (vc->gfx.tex_id == 0 || vc->gfx.w == 0 || vc->gfx.h == 0) { + gtk_gl_area_set_scanout_mode(vc, false); + return; + } + + gtk_gl_area_set_scanout_mode(vc, true); + if (!vc->gfx.fbo_id) { + glGenFramebuffers(1, &vc->gfx.fbo_id); + } + + glBindFramebuffer(GL_FRAMEBUFFER_EXT, vc->gfx.fbo_id); + glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, + GL_TEXTURE_2D, vc->gfx.tex_id, 0); +} + +void gd_gl_area_scanout_flush(DisplayChangeListener *dcl, + uint32_t x, uint32_t y, uint32_t w, uint32_t h) +{ + VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl); + + gtk_gl_area_queue_render(GTK_GL_AREA(vc->gfx.drawing_area)); +} + +void gtk_gl_area_init(void) +{ + display_opengl = 1; +} + +QEMUGLContext gd_gl_area_get_current_context(DisplayChangeListener *dcl) +{ + return gdk_gl_context_get_current(); +} + +int gd_gl_area_make_current(DisplayChangeListener *dcl, + QEMUGLContext ctx) +{ + gdk_gl_context_make_current(ctx); + return 0; +} |