qemu-e2k/ui/gtk-gl-area.c

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/*
* 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/main-loop.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) {
egl_fb_destroy(&vc->gfx.guest_fb);
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)
{
#ifdef CONFIG_GBM
QemuDmaBuf *dmabuf = vc->gfx.guest_fb.dmabuf;
#endif
int ww, wh, ws, y1, y2;
if (!vc->gfx.gls) {
return;
}
gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
ws = gdk_window_get_scale_factor(gtk_widget_get_window(vc->gfx.drawing_area));
ww = gtk_widget_get_allocated_width(vc->gfx.drawing_area) * ws;
wh = gtk_widget_get_allocated_height(vc->gfx.drawing_area) * ws;
if (vc->gfx.scanout_mode) {
if (!vc->gfx.guest_fb.framebuffer) {
return;
}
#ifdef CONFIG_GBM
if (dmabuf) {
if (!dmabuf->draw_submitted) {
return;
} else {
dmabuf->draw_submitted = false;
}
}
#endif
glBindFramebuffer(GL_READ_FRAMEBUFFER, vc->gfx.guest_fb.framebuffer);
/* 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);
#ifdef CONFIG_GBM
if (dmabuf) {
egl_dmabuf_create_sync(dmabuf);
}
#endif
glFlush();
#ifdef CONFIG_GBM
if (dmabuf) {
egl_dmabuf_create_fence(dmabuf);
if (dmabuf->fence_fd > 0) {
qemu_set_fd_handler(dmabuf->fence_fd, gd_hw_gl_flushed, NULL, vc);
return;
}
graphic_hw_gl_block(vc->gfx.dcl.con, false);
}
#endif
} 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);
gd_update_monitor_refresh_rate(vc, vc->window ? vc->window : vc->gfx.drawing_area);
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 = qemu_gl_init_shader();
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);
}
}
ui/gtk-gl-area: create the requested GL context version Since about 2018 virglrenderer (commit fa835b0f88 "vrend: don't hardcode context version") tries to open the highest available GL context version. This is done by creating the known GL context versions from the highest to the lowest until (*create_gl_context) returns a context != NULL. This does not work properly with the current QEMU gd_gl_area_create_context() function, because gdk_gl_context_realize() on Wayland creates a version 3.0 legacy context if the requested GL context version can't be created. In order for virglrenderer to find the highest available GL context version, return NULL if the created context version is lower than the requested version. This fixes the following error: QEMU started with -device virtio-vga-gl -display gtk,gl=on. Under Wayland, the guest window remains black and the following information can be seen on the host. gl_version 30 - compat profile (qemu:5978): Gdk-WARNING **: 16:19:01.533: gdk_gl_context_set_required_version - GL context versions less than 3.2 are not supported. (qemu:5978): Gdk-WARNING **: 16:19:01.537: gdk_gl_context_set_required_version - GL context versions less than 3.2 are not supported. (qemu:5978): Gdk-WARNING **: 16:19:01.554: gdk_gl_context_set_required_version - GL context versions less than 3.2 are not supported. vrend_renderer_fill_caps: Entering with stale GL error: 1282 To reproduce this error, an OpenGL driver is required on the host that doesn't have the latest OpenGL extensions fully implemented. An example for this is the Intel i965 driver on a Haswell processor. Signed-off-by: Volker Rümelin <vr_qemu@t-online.de> Message-Id: <20220605085131.7711-2-vr_qemu@t-online.de> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2022-06-05 10:51:31 +02:00
static int gd_cmp_gl_context_version(int major, int minor, QEMUGLParams *params)
{
if (major > params->major_ver) {
return 1;
}
if (major < params->major_ver) {
return -1;
}
if (minor > params->minor_ver) {
return 1;
}
if (minor < params->minor_ver) {
return -1;
}
return 0;
}
QEMUGLContext gd_gl_area_create_context(DisplayGLCtx *dgc,
QEMUGLParams *params)
{
VirtualConsole *vc = container_of(dgc, VirtualConsole, gfx.dgc);
GdkWindow *window;
GdkGLContext *ctx;
GError *err = NULL;
ui/gtk-gl-area: create the requested GL context version Since about 2018 virglrenderer (commit fa835b0f88 "vrend: don't hardcode context version") tries to open the highest available GL context version. This is done by creating the known GL context versions from the highest to the lowest until (*create_gl_context) returns a context != NULL. This does not work properly with the current QEMU gd_gl_area_create_context() function, because gdk_gl_context_realize() on Wayland creates a version 3.0 legacy context if the requested GL context version can't be created. In order for virglrenderer to find the highest available GL context version, return NULL if the created context version is lower than the requested version. This fixes the following error: QEMU started with -device virtio-vga-gl -display gtk,gl=on. Under Wayland, the guest window remains black and the following information can be seen on the host. gl_version 30 - compat profile (qemu:5978): Gdk-WARNING **: 16:19:01.533: gdk_gl_context_set_required_version - GL context versions less than 3.2 are not supported. (qemu:5978): Gdk-WARNING **: 16:19:01.537: gdk_gl_context_set_required_version - GL context versions less than 3.2 are not supported. (qemu:5978): Gdk-WARNING **: 16:19:01.554: gdk_gl_context_set_required_version - GL context versions less than 3.2 are not supported. vrend_renderer_fill_caps: Entering with stale GL error: 1282 To reproduce this error, an OpenGL driver is required on the host that doesn't have the latest OpenGL extensions fully implemented. An example for this is the Intel i965 driver on a Haswell processor. Signed-off-by: Volker Rümelin <vr_qemu@t-online.de> Message-Id: <20220605085131.7711-2-vr_qemu@t-online.de> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2022-06-05 10:51:31 +02:00
int major, minor;
window = gtk_widget_get_window(vc->gfx.drawing_area);
ctx = gdk_window_create_gl_context(window, &err);
if (err) {
g_printerr("Create gdk gl context failed: %s\n", err->message);
g_error_free(err);
return NULL;
}
gdk_gl_context_set_required_version(ctx,
params->major_ver,
params->minor_ver);
gdk_gl_context_realize(ctx, &err);
if (err) {
g_printerr("Realize gdk gl context failed: %s\n", err->message);
g_error_free(err);
g_clear_object(&ctx);
return NULL;
}
ui/gtk-gl-area: create the requested GL context version Since about 2018 virglrenderer (commit fa835b0f88 "vrend: don't hardcode context version") tries to open the highest available GL context version. This is done by creating the known GL context versions from the highest to the lowest until (*create_gl_context) returns a context != NULL. This does not work properly with the current QEMU gd_gl_area_create_context() function, because gdk_gl_context_realize() on Wayland creates a version 3.0 legacy context if the requested GL context version can't be created. In order for virglrenderer to find the highest available GL context version, return NULL if the created context version is lower than the requested version. This fixes the following error: QEMU started with -device virtio-vga-gl -display gtk,gl=on. Under Wayland, the guest window remains black and the following information can be seen on the host. gl_version 30 - compat profile (qemu:5978): Gdk-WARNING **: 16:19:01.533: gdk_gl_context_set_required_version - GL context versions less than 3.2 are not supported. (qemu:5978): Gdk-WARNING **: 16:19:01.537: gdk_gl_context_set_required_version - GL context versions less than 3.2 are not supported. (qemu:5978): Gdk-WARNING **: 16:19:01.554: gdk_gl_context_set_required_version - GL context versions less than 3.2 are not supported. vrend_renderer_fill_caps: Entering with stale GL error: 1282 To reproduce this error, an OpenGL driver is required on the host that doesn't have the latest OpenGL extensions fully implemented. An example for this is the Intel i965 driver on a Haswell processor. Signed-off-by: Volker Rümelin <vr_qemu@t-online.de> Message-Id: <20220605085131.7711-2-vr_qemu@t-online.de> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2022-06-05 10:51:31 +02:00
gdk_gl_context_make_current(ctx);
gdk_gl_context_get_version(ctx, &major, &minor);
gdk_gl_context_clear_current();
gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
if (gd_cmp_gl_context_version(major, minor, params) == -1) {
/* created ctx version < requested version */
g_clear_object(&ctx);
}
trace_gd_gl_area_create_context(ctx, params->major_ver, params->minor_ver);
return ctx;
}
void gd_gl_area_destroy_context(DisplayGLCtx *dgc, QEMUGLContext ctx)
{
GdkGLContext *current_ctx = gdk_gl_context_get_current();
trace_gd_gl_area_destroy_context(ctx, current_ctx);
if (ctx == current_ctx) {
gdk_gl_context_clear_current();
}
g_clear_object(&ctx);
}
void gd_gl_area_scanout_texture(DisplayChangeListener *dcl,
uint32_t backing_id,
bool backing_y_0_top,
uint32_t backing_width,
uint32_t backing_height,
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.y0_top = backing_y_0_top;
gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
if (backing_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);
egl_fb_setup_for_tex(&vc->gfx.guest_fb, backing_width, backing_height,
backing_id, false);
}
void gd_gl_area_scanout_disable(DisplayChangeListener *dcl)
{
VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
gtk_gl_area_set_scanout_mode(vc, false);
}
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);
if (vc->gfx.guest_fb.dmabuf && !vc->gfx.guest_fb.dmabuf->draw_submitted) {
graphic_hw_gl_block(vc->gfx.dcl.con, true);
vc->gfx.guest_fb.dmabuf->draw_submitted = true;
}
gtk_gl_area_queue_render(GTK_GL_AREA(vc->gfx.drawing_area));
}
void gd_gl_area_scanout_dmabuf(DisplayChangeListener *dcl,
QemuDmaBuf *dmabuf)
{
#ifdef CONFIG_GBM
VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
egl_dmabuf_import_texture(dmabuf);
if (!dmabuf->texture) {
return;
}
gd_gl_area_scanout_texture(dcl, dmabuf->texture,
false, dmabuf->width, dmabuf->height,
0, 0, dmabuf->width, dmabuf->height);
if (dmabuf->allow_fences) {
vc->gfx.guest_fb.dmabuf = dmabuf;
}
#endif
}
void gtk_gl_area_init(void)
{
display_opengl = 1;
}
int gd_gl_area_make_current(DisplayGLCtx *dgc,
QEMUGLContext ctx)
{
gdk_gl_context_make_current(ctx);
return 0;
}