124 lines
2.8 KiB
C
124 lines
2.8 KiB
C
#include <stdbool.h>
|
|
|
|
#include <gbm.h>
|
|
#include <GLES2/gl2.h>
|
|
#include <EGL/egl.h>
|
|
#include <EGL/eglext.h>
|
|
|
|
#include <wlr/egl.h>
|
|
#include <wlr/util/log.h>
|
|
#include "backend/drm/drm.h"
|
|
|
|
bool wlr_drm_renderer_init(struct wlr_drm_renderer *renderer, int fd) {
|
|
renderer->gbm = gbm_create_device(fd);
|
|
if (!renderer->gbm) {
|
|
wlr_log(L_ERROR, "Failed to create GBM device");
|
|
return false;
|
|
}
|
|
|
|
if (!wlr_egl_init(&renderer->egl, EGL_PLATFORM_GBM_MESA,
|
|
GBM_FORMAT_ARGB8888, renderer->gbm)) {
|
|
gbm_device_destroy(renderer->gbm);
|
|
return false;
|
|
}
|
|
|
|
renderer->fd = fd;
|
|
return true;
|
|
}
|
|
|
|
void wlr_drm_renderer_finish(struct wlr_drm_renderer *renderer) {
|
|
if (!renderer) {
|
|
return;
|
|
}
|
|
|
|
wlr_egl_free(&renderer->egl);
|
|
gbm_device_destroy(renderer->gbm);
|
|
}
|
|
|
|
bool wlr_drm_surface_init(struct wlr_drm_surface *surf,
|
|
struct wlr_drm_renderer *renderer, uint32_t width, uint32_t height,
|
|
uint32_t format, uint32_t flags) {
|
|
if (surf->width == width && surf->height == height) {
|
|
return true;
|
|
}
|
|
|
|
surf->renderer = renderer;
|
|
surf->width = width;
|
|
surf->height = height;
|
|
|
|
surf->gbm = gbm_surface_create(renderer->gbm, width, height,
|
|
format, GBM_BO_USE_RENDERING | flags);
|
|
if (!surf->gbm) {
|
|
wlr_log_errno(L_ERROR, "Failed to create GBM surface");
|
|
goto error_zero;
|
|
}
|
|
|
|
surf->egl = wlr_egl_create_surface(&renderer->egl, surf->gbm);
|
|
if (surf->egl == EGL_NO_SURFACE) {
|
|
wlr_log(L_ERROR, "Failed to create EGL surface");
|
|
goto error_gbm;
|
|
}
|
|
|
|
return true;
|
|
|
|
error_gbm:
|
|
gbm_surface_destroy(surf->gbm);
|
|
error_zero:
|
|
memset(surf, 0, sizeof(*surf));
|
|
return false;
|
|
}
|
|
|
|
void wlr_drm_surface_finish(struct wlr_drm_surface *surf) {
|
|
if (!surf || !surf->renderer) {
|
|
return;
|
|
}
|
|
|
|
eglMakeCurrent(surf->renderer->egl.display, EGL_NO_SURFACE, EGL_NO_SURFACE,
|
|
EGL_NO_CONTEXT);
|
|
|
|
if (surf->front) {
|
|
gbm_surface_release_buffer(surf->gbm, surf->front);
|
|
}
|
|
if (surf->back) {
|
|
gbm_surface_release_buffer(surf->gbm, surf->back);
|
|
}
|
|
|
|
if (surf->egl) {
|
|
eglDestroySurface(surf->renderer->egl.display, surf->egl);
|
|
}
|
|
if (surf->gbm) {
|
|
gbm_surface_destroy(surf->gbm);
|
|
}
|
|
|
|
memset(surf, 0, sizeof(*surf));
|
|
}
|
|
|
|
void wlr_drm_surface_make_current(struct wlr_drm_surface *surf) {
|
|
eglMakeCurrent(surf->renderer->egl.display, surf->egl, surf->egl,
|
|
surf->renderer->egl.context);
|
|
}
|
|
|
|
struct gbm_bo *wlr_drm_surface_swap_buffers(struct wlr_drm_surface *surf) {
|
|
if (surf->front) {
|
|
gbm_surface_release_buffer(surf->gbm, surf->front);
|
|
}
|
|
|
|
eglSwapBuffers(surf->renderer->egl.display, surf->egl);
|
|
|
|
surf->front = surf->back;
|
|
surf->back = gbm_surface_lock_front_buffer(surf->gbm);
|
|
return surf->back;
|
|
}
|
|
|
|
struct gbm_bo *wlr_drm_surface_get_front(struct wlr_drm_surface *surf) {
|
|
if (surf->front) {
|
|
return surf->front;
|
|
}
|
|
|
|
wlr_drm_surface_make_current(surf);
|
|
glViewport(0, 0, surf->width, surf->height);
|
|
glClearColor(0.0, 0.0, 0.0, 1.0);
|
|
glClear(GL_COLOR_BUFFER_BIT);
|
|
return wlr_drm_surface_swap_buffers(surf);
|
|
}
|