diff options
Diffstat (limited to 'render/egl.c')
| -rw-r--r-- | render/egl.c | 135 |
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; +} |