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Diffstat (limited to 'render/egl.c')
-rw-r--r--render/egl.c135
1 files changed, 135 insertions, 0 deletions
diff --git a/render/egl.c b/render/egl.c
index 0a68d6e5..55809983 100644
--- a/render/egl.c
+++ b/render/egl.c
@@ -167,6 +167,12 @@ bool wlr_egl_init(struct wlr_egl *egl, EGLenum platform, void *remote_display,
check_egl_ext(egl->egl_exts_str, "EGL_EXT_swap_buffers_with_damage") ||
check_egl_ext(egl->egl_exts_str, "EGL_KHR_swap_buffers_with_damage");
+ egl->egl_exts.dmabuf_import =
+ check_egl_ext(egl->egl_exts_str, "EGL_EXT_image_dma_buf_import");
+ egl->egl_exts.dmabuf_import_modifiers =
+ check_egl_ext(egl->egl_exts_str, "EGL_EXT_image_dma_buf_import_modifiers")
+ && eglQueryDmaBufFormatsEXT && eglQueryDmaBufModifiersEXT;
+
return true;
error:
@@ -299,3 +305,132 @@ bool wlr_egl_swap_buffers(struct wlr_egl *egl, EGLSurface surface,
}
return true;
}
+
+EGLImage wlr_egl_create_image_from_dmabuf(struct wlr_egl *egl,
+ struct wlr_dmabuf_buffer_attribs *attributes) {
+ int atti = 0;
+ EGLint attribs[20];
+ attribs[atti++] = EGL_WIDTH;
+ attribs[atti++] = attributes->width;
+ attribs[atti++] = EGL_HEIGHT;
+ attribs[atti++] = attributes->height;
+ attribs[atti++] = EGL_LINUX_DRM_FOURCC_EXT;
+ attribs[atti++] = attributes->format;
+
+ bool has_modifier = false;
+ if (attributes->modifier[0] != DRM_FORMAT_MOD_INVALID) {
+ if (!egl->egl_exts.dmabuf_import_modifiers) {
+ return NULL;
+ }
+ has_modifier = true;
+ }
+
+ /* TODO: YUV planes have up four planes but we only support a
+ single EGLImage for now */
+ if (attributes->n_planes > 1) {
+ return NULL;
+ }
+
+ attribs[atti++] = EGL_DMA_BUF_PLANE0_FD_EXT;
+ attribs[atti++] = attributes->fd[0];
+ attribs[atti++] = EGL_DMA_BUF_PLANE0_OFFSET_EXT;
+ attribs[atti++] = attributes->offset[0];
+ attribs[atti++] = EGL_DMA_BUF_PLANE0_PITCH_EXT;
+ attribs[atti++] = attributes->stride[0];
+ if (has_modifier) {
+ attribs[atti++] = EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT;
+ attribs[atti++] = attributes->modifier[0] & 0xFFFFFFFF;
+ attribs[atti++] = EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT;
+ attribs[atti++] = attributes->modifier[0] >> 32;
+ }
+ attribs[atti++] = EGL_NONE;
+ return eglCreateImageKHR(egl->display, EGL_NO_CONTEXT,
+ EGL_LINUX_DMA_BUF_EXT, NULL, attribs);
+}
+
+#ifndef DRM_FORMAT_BIG_ENDIAN
+# define DRM_FORMAT_BIG_ENDIAN 0x80000000
+#endif
+bool wlr_egl_check_import_dmabuf(struct wlr_egl *egl,
+ struct wlr_dmabuf_buffer *dmabuf) {
+ switch (dmabuf->attributes.format & ~DRM_FORMAT_BIG_ENDIAN) {
+ /* YUV based formats not yet supported */
+ case WL_SHM_FORMAT_YUYV:
+ case WL_SHM_FORMAT_YVYU:
+ case WL_SHM_FORMAT_UYVY:
+ case WL_SHM_FORMAT_VYUY:
+ case WL_SHM_FORMAT_AYUV:
+ return false;
+ default:
+ break;
+ }
+
+ EGLImage egl_image = wlr_egl_create_image_from_dmabuf(egl,
+ &dmabuf->attributes);
+ if (egl_image) {
+ /* We can import the image, good. No need to keep it
+ since wlr_texture_upload_dmabuf will import it again */
+ wlr_egl_destroy_image(egl, egl_image);
+ return true;
+ }
+ /* TODO: import yuv dmabufs */
+ return false;
+}
+
+int wlr_egl_get_dmabuf_formats(struct wlr_egl *egl,
+ int **formats) {
+ if (!egl->egl_exts.dmabuf_import ||
+ !egl->egl_exts.dmabuf_import_modifiers) {
+ wlr_log(L_ERROR, "dmabuf extension not present");
+ return -1;
+ }
+
+ EGLint num;
+ if (!eglQueryDmaBufFormatsEXT(egl->display, 0, NULL, &num)) {
+ wlr_log(L_ERROR, "failed to query number of dmabuf formats");
+ return -1;
+ }
+
+ *formats = calloc(num, sizeof(int));
+ if (*formats == NULL) {
+ wlr_log(L_ERROR, "Allocation failed: %s", strerror(errno));
+ return -1;
+ }
+
+ if (!eglQueryDmaBufFormatsEXT(egl->display, num, *formats, &num)) {
+ wlr_log(L_ERROR, "failed to query dmabuf format");
+ free(*formats);
+ return -1;
+ }
+ return num;
+}
+
+int wlr_egl_get_dmabuf_modifiers(struct wlr_egl *egl,
+ int format, uint64_t **modifiers) {
+ if (!egl->egl_exts.dmabuf_import ||
+ !egl->egl_exts.dmabuf_import_modifiers) {
+ wlr_log(L_ERROR, "dmabuf extension not present");
+ return -1;
+ }
+
+ EGLint num;
+ if (!eglQueryDmaBufModifiersEXT(egl->display, format, 0,
+ NULL, NULL, &num)) {
+ wlr_log(L_ERROR, "failed to query dmabuf number of modifiers");
+ return -1;
+ }
+
+ *modifiers = calloc(num, sizeof(uint64_t));
+ if (*modifiers == NULL) {
+ wlr_log(L_ERROR, "Allocation failed: %s", strerror(errno));
+ return -1;
+ }
+
+ if (!eglQueryDmaBufModifiersEXT(egl->display, format, num,
+ *modifiers, NULL, &num)) {
+ wlr_log(L_ERROR, "failed to query dmabuf modifiers");
+ free(*modifiers);
+ return -1;
+ }
+ return num;
+}