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#include "qemu/osdep.h"
#include "qemu-common.h"
#include "sysemu/sysemu.h"
#include "ui/console.h"
#include "ui/egl-helpers.h"
#include "ui/egl-context.h"
typedef struct egl_dpy {
DisplayChangeListener dcl;
DisplaySurface *ds;
int width, height;
GLuint texture;
GLuint framebuffer;
GLuint blit_texture;
GLuint blit_framebuffer;
bool y_0_top;
} egl_dpy;
static void egl_refresh(DisplayChangeListener *dcl)
{
graphic_hw_update(dcl->con);
}
static void egl_gfx_update(DisplayChangeListener *dcl,
int x, int y, int w, int h)
{
}
static void egl_gfx_switch(DisplayChangeListener *dcl,
struct DisplaySurface *new_surface)
{
egl_dpy *edpy = container_of(dcl, egl_dpy, dcl);
edpy->ds = new_surface;
}
static void egl_scanout_disable(DisplayChangeListener *dcl)
{
egl_dpy *edpy = container_of(dcl, egl_dpy, dcl);
edpy->texture = 0;
/* XXX: delete framebuffers here ??? */
}
static void egl_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)
{
egl_dpy *edpy = container_of(dcl, egl_dpy, dcl);
edpy->texture = backing_id;
edpy->y_0_top = backing_y_0_top;
/* source framebuffer */
if (!edpy->framebuffer) {
glGenFramebuffers(1, &edpy->framebuffer);
}
glBindFramebuffer(GL_FRAMEBUFFER_EXT, edpy->framebuffer);
glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
GL_TEXTURE_2D, edpy->texture, 0);
/* dest framebuffer */
if (!edpy->blit_framebuffer) {
glGenFramebuffers(1, &edpy->blit_framebuffer);
glGenTextures(1, &edpy->blit_texture);
edpy->width = 0;
edpy->height = 0;
}
if (edpy->width != backing_width || edpy->height != backing_height) {
edpy->width = backing_width;
edpy->height = backing_height;
glBindTexture(GL_TEXTURE_2D, edpy->blit_texture);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB,
edpy->width, edpy->height,
0, GL_BGRA, GL_UNSIGNED_BYTE, 0);
glBindFramebuffer(GL_FRAMEBUFFER_EXT, edpy->blit_framebuffer);
glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
GL_TEXTURE_2D, edpy->blit_texture, 0);
}
}
static void egl_scanout_flush(DisplayChangeListener *dcl,
uint32_t x, uint32_t y,
uint32_t w, uint32_t h)
{
egl_dpy *edpy = container_of(dcl, egl_dpy, dcl);
GLuint y1, y2;
if (!edpy->texture || !edpy->ds) {
return;
}
assert(surface_width(edpy->ds) == edpy->width);
assert(surface_height(edpy->ds) == edpy->height);
assert(surface_format(edpy->ds) == PIXMAN_x8r8g8b8);
/* blit framebuffer, flip if needed */
glBindFramebuffer(GL_READ_FRAMEBUFFER, edpy->framebuffer);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, edpy->blit_framebuffer);
glViewport(0, 0, edpy->width, edpy->height);
y1 = edpy->y_0_top ? edpy->height : 0;
y2 = edpy->y_0_top ? 0 : edpy->height;
glBlitFramebuffer(0, y1, edpy->width, y2,
0, 0, edpy->width, edpy->height,
GL_COLOR_BUFFER_BIT, GL_NEAREST);
/* read pixels to surface */
glBindFramebuffer(GL_READ_FRAMEBUFFER, edpy->blit_framebuffer);
glReadBuffer(GL_COLOR_ATTACHMENT0_EXT);
glReadPixels(0, 0, edpy->width, edpy->height,
GL_BGRA, GL_UNSIGNED_BYTE, surface_data(edpy->ds));
/* notify about updates */
dpy_gfx_update(edpy->dcl.con, x, y, w, h);
}
static const DisplayChangeListenerOps egl_ops = {
.dpy_name = "egl-headless",
.dpy_refresh = egl_refresh,
.dpy_gfx_update = egl_gfx_update,
.dpy_gfx_switch = egl_gfx_switch,
.dpy_gl_ctx_create = qemu_egl_create_context,
.dpy_gl_ctx_destroy = qemu_egl_destroy_context,
.dpy_gl_ctx_make_current = qemu_egl_make_context_current,
.dpy_gl_ctx_get_current = qemu_egl_get_current_context,
.dpy_gl_scanout_disable = egl_scanout_disable,
.dpy_gl_scanout_texture = egl_scanout_texture,
.dpy_gl_update = egl_scanout_flush,
};
void egl_headless_init(void)
{
QemuConsole *con;
egl_dpy *edpy;
int idx;
if (egl_rendernode_init(NULL) < 0) {
error_report("egl: render node init failed");
exit(1);
}
for (idx = 0;; idx++) {
con = qemu_console_lookup_by_index(idx);
if (!con || !qemu_console_is_graphic(con)) {
break;
}
edpy = g_new0(egl_dpy, 1);
edpy->dcl.con = con;
edpy->dcl.ops = &egl_ops;
register_displaychangelistener(&edpy->dcl);
}
}
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