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This allows virtio-gpu to render in 3d mode. Uses native opengl support which is present in gtk versions 3.16 and newer. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>pull/30/head
Gerd Hoffmann
11 years ago
5 changed files with 365 additions and 24 deletions
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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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