123 lines
3.7 KiB
C
123 lines
3.7 KiB
C
#include "../include/window_texture.h"
|
|
#include <X11/extensions/Xcomposite.h>
|
|
|
|
static int x11_supports_composite_named_window_pixmap(Display *display) {
|
|
int extension_major;
|
|
int extension_minor;
|
|
if(!XCompositeQueryExtension(display, &extension_major, &extension_minor))
|
|
return 0;
|
|
|
|
int major_version;
|
|
int minor_version;
|
|
return XCompositeQueryVersion(display, &major_version, &minor_version) && (major_version > 0 || minor_version >= 2);
|
|
}
|
|
|
|
int window_texture_init(WindowTexture *window_texture, Display *display, Window window, gsr_egl *egl) {
|
|
window_texture->display = display;
|
|
window_texture->window = window;
|
|
window_texture->pixmap = None;
|
|
window_texture->texture_id = 0;
|
|
window_texture->redirected = 0;
|
|
window_texture->egl = egl;
|
|
|
|
if(!x11_supports_composite_named_window_pixmap(display))
|
|
return 1;
|
|
|
|
XCompositeRedirectWindow(display, window, CompositeRedirectAutomatic);
|
|
window_texture->redirected = 1;
|
|
return window_texture_on_resize(window_texture);
|
|
}
|
|
|
|
static void window_texture_cleanup(WindowTexture *self, int delete_texture) {
|
|
if(delete_texture && self->texture_id) {
|
|
self->egl->glDeleteTextures(1, &self->texture_id);
|
|
self->texture_id = 0;
|
|
}
|
|
|
|
if(self->pixmap) {
|
|
XFreePixmap(self->display, self->pixmap);
|
|
self->pixmap = None;
|
|
}
|
|
}
|
|
|
|
void window_texture_deinit(WindowTexture *self) {
|
|
if(self->redirected) {
|
|
XCompositeUnredirectWindow(self->display, self->window, CompositeRedirectAutomatic);
|
|
self->redirected = 0;
|
|
}
|
|
window_texture_cleanup(self, 1);
|
|
}
|
|
|
|
int window_texture_on_resize(WindowTexture *self) {
|
|
window_texture_cleanup(self, 0);
|
|
|
|
int result = 0;
|
|
Pixmap pixmap = None;
|
|
unsigned int texture_id = 0;
|
|
EGLImage image = NULL;
|
|
|
|
const intptr_t pixmap_attrs[] = {
|
|
EGL_IMAGE_PRESERVED_KHR, EGL_TRUE,
|
|
EGL_NONE,
|
|
};
|
|
|
|
pixmap = XCompositeNameWindowPixmap(self->display, self->window);
|
|
if(!pixmap) {
|
|
result = 2;
|
|
goto cleanup;
|
|
}
|
|
|
|
if(self->texture_id == 0) {
|
|
self->egl->glGenTextures(1, &texture_id);
|
|
if(texture_id == 0) {
|
|
result = 3;
|
|
goto cleanup;
|
|
}
|
|
self->egl->glBindTexture(GL_TEXTURE_2D, texture_id);
|
|
} else {
|
|
self->egl->glBindTexture(GL_TEXTURE_2D, self->texture_id);
|
|
texture_id = self->texture_id;
|
|
}
|
|
|
|
self->egl->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
|
|
self->egl->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
|
|
self->egl->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
|
self->egl->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
|
|
|
while(self->egl->glGetError()) {}
|
|
while(self->egl->eglGetError() != EGL_SUCCESS) {}
|
|
|
|
image = self->egl->eglCreateImage(self->egl->egl_display, NULL, EGL_NATIVE_PIXMAP_KHR, (EGLClientBuffer)pixmap, pixmap_attrs);
|
|
if(!image) {
|
|
result = 4;
|
|
goto cleanup;
|
|
}
|
|
|
|
self->egl->glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, image);
|
|
if(self->egl->glGetError() != 0 || self->egl->eglGetError() != EGL_SUCCESS) {
|
|
result = 5;
|
|
goto cleanup;
|
|
}
|
|
|
|
self->pixmap = pixmap;
|
|
self->texture_id = texture_id;
|
|
|
|
cleanup:
|
|
self->egl->glBindTexture(GL_TEXTURE_2D, 0);
|
|
|
|
if(image)
|
|
self->egl->eglDestroyImage(self->egl->egl_display, image);
|
|
|
|
if(result != 0) {
|
|
if(texture_id != 0)
|
|
self->egl->glDeleteTextures(1, &texture_id);
|
|
if(pixmap)
|
|
XFreePixmap(self->display, pixmap);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
unsigned int window_texture_get_opengl_texture_id(WindowTexture *self) {
|
|
return self->texture_id;
|
|
} |