diff options
Diffstat (limited to 'ui')
| -rw-r--r-- | ui/egl-helpers.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/ui/egl-helpers.c b/ui/egl-helpers.c index c2a3ace..f38800e 100644 --- a/ui/egl-helpers.c +++ b/ui/egl-helpers.c @@ -169,6 +169,20 @@ void egl_fb_read(DisplaySurface *dst, egl_fb *src) GL_BGRA, GL_UNSIGNED_BYTE, surface_data(dst)); } +void egl_fb_read_rect(DisplaySurface *dst, egl_fb *src, int x, int y, int w, int h) +{ + assert(surface_width(dst) == src->width); + assert(surface_height(dst) == src->height); + assert(surface_format(dst) == PIXMAN_x8r8g8b8); + + glBindFramebuffer(GL_READ_FRAMEBUFFER, src->framebuffer); + glReadBuffer(GL_COLOR_ATTACHMENT0_EXT); + glPixelStorei(GL_PACK_ROW_LENGTH, surface_stride(dst) / 4); + glReadPixels(x, y, w, h, + GL_BGRA, GL_UNSIGNED_BYTE, surface_data(dst) + x * 4); + glPixelStorei(GL_PACK_ROW_LENGTH, 0); +} + void egl_texture_blit(QemuGLShader *gls, egl_fb *dst, egl_fb *src, bool flip) { glBindFramebuffer(GL_FRAMEBUFFER_EXT, dst->framebuffer); |