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egl-headless: use framebuffer helper functions. 

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20170614084149.31314-3-kraxel@redhat.com
This commit is contained in:
Gerd Hoffmann 2017-06-14 10:41:47 +02:00
parent 6fafc26014
commit d8dc67e119
1 changed files with 17 additions and 50 deletions
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67
ui/egl-headless.c
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@ -8,14 +8,13 @@
typedef struct egl_dpy {
DisplayChangeListener dcl;
DisplaySurface *ds;
int width, height;
GLuint texture;
GLuint framebuffer;
GLuint blit_texture;
GLuint blit_framebuffer;
egl_fb guest_fb;
egl_fb blit_fb;
bool y_0_top;
} egl_dpy;
/* ------------------------------------------------------------------ */
static void egl_refresh(DisplayChangeListener *dcl)
{
graphic_hw_update(dcl->con);
@ -38,8 +37,8 @@ static void egl_scanout_disable(DisplayChangeListener *dcl)
{
egl_dpy *edpy = container_of(dcl, egl_dpy, dcl);
edpy->texture = 0;
/* XXX: delete framebuffers here ??? */
egl_fb_destroy(&edpy->guest_fb);
egl_fb_destroy(&edpy->blit_fb);
}
static void egl_scanout_texture(DisplayChangeListener *dcl,
@ -52,34 +51,17 @@ static void egl_scanout_texture(DisplayChangeListener *dcl,
{
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);
egl_fb_create_for_tex(&edpy->guest_fb,
backing_width, backing_height, backing_id);
/* 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);
if (edpy->blit_fb.width != backing_width ||
edpy->blit_fb.height != backing_height) {
egl_fb_destroy(&edpy->blit_fb);
egl_fb_create_new_tex(&edpy->blit_fb, backing_width, backing_height);
}
}
@ -88,32 +70,17 @@ static void egl_scanout_flush(DisplayChangeListener *dcl,
uint32_t w, uint32_t h)
{
egl_dpy *edpy = container_of(dcl, egl_dpy, dcl);
GLuint y1, y2;
if (!edpy->texture || !edpy->ds) {
if (!edpy->guest_fb.texture || !edpy->ds) {
return;
}
assert(surface_width(edpy->ds) == edpy->width);
assert(surface_height(edpy->ds) == edpy->height);
assert(surface_width(edpy->ds) == edpy->guest_fb.width);
assert(surface_height(edpy->ds) == edpy->guest_fb.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);
egl_fb_blit(&edpy->blit_fb, &edpy->guest_fb, edpy->y_0_top);
egl_fb_read(surface_data(edpy->ds), &edpy->blit_fb);
/* 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);
}