diff options
| author | Gerd Hoffmann <kraxel@redhat.com> | 2017-10-10 15:54:51 +0200 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2017-10-17 10:25:42 +0200 |
| commit | 86c0522c63e84ee9a98b9cd9cf6588faba1bac23 (patch) | |
| tree | d079090e808f20fcd9c19cbf5917ac5c9e283432 | |
| parent | 2e1d70b9e03ca3f1c6185b54010bc9e47e0a0d0c (diff) | |
egl-helpers: add dmabuf import support
Add helper function to import a dma-buf as opengl texture.
Also add a helper to release the texture again.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20171010135453.6704-5-kraxel@redhat.com
| -rw-r--r-- | include/ui/egl-helpers.h | 3 | ||||
| -rw-r--r-- | ui/egl-helpers.c | 46 |
2 files changed, 49 insertions, 0 deletions
diff --git a/include/ui/egl-helpers.h b/include/ui/egl-helpers.h index 81cb255de0..4924fe560d 100644 --- a/include/ui/egl-helpers.h +++ b/include/ui/egl-helpers.h @@ -33,6 +33,9 @@ extern EGLContext qemu_egl_rn_ctx; int egl_rendernode_init(const char *rendernode); int egl_get_fd_for_texture(uint32_t tex_id, EGLint *stride, EGLint *fourcc); +void egl_dmabuf_import_texture(QemuDmaBuf *dmabuf); +void egl_dmabuf_release_texture(QemuDmaBuf *dmabuf); + #endif EGLSurface qemu_egl_init_surface_x11(EGLContext ectx, Window win); diff --git a/ui/egl-helpers.c b/ui/egl-helpers.c index cde9965dea..e7ee337d7e 100644 --- a/ui/egl-helpers.c +++ b/ui/egl-helpers.c @@ -19,6 +19,7 @@ #include <dirent.h> #include "qemu/error-report.h" +#include "ui/console.h" #include "ui/egl-helpers.h" EGLDisplay *qemu_egl_display; @@ -241,6 +242,51 @@ int egl_get_fd_for_texture(uint32_t tex_id, EGLint *stride, EGLint *fourcc) return fd; } +void egl_dmabuf_import_texture(QemuDmaBuf *dmabuf) +{ + EGLImageKHR image = EGL_NO_IMAGE_KHR; + EGLint attrs[] = { + EGL_DMA_BUF_PLANE0_FD_EXT, dmabuf->fd, + EGL_DMA_BUF_PLANE0_PITCH_EXT, dmabuf->stride, + EGL_DMA_BUF_PLANE0_OFFSET_EXT, 0, + EGL_WIDTH, dmabuf->width, + EGL_HEIGHT, dmabuf->height, + EGL_LINUX_DRM_FOURCC_EXT, dmabuf->fourcc, + EGL_NONE, /* end of list */ + }; + + if (dmabuf->texture != 0) { + return; + } + + image = eglCreateImageKHR(qemu_egl_display, + EGL_NO_CONTEXT, + EGL_LINUX_DMA_BUF_EXT, + NULL, attrs); + if (image == EGL_NO_IMAGE_KHR) { + error_report("eglCreateImageKHR failed"); + return; + } + + glGenTextures(1, &dmabuf->texture); + glBindTexture(GL_TEXTURE_2D, dmabuf->texture); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); + + glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, (GLeglImageOES)image); + eglDestroyImageKHR(qemu_egl_display, image); +} + +void egl_dmabuf_release_texture(QemuDmaBuf *dmabuf) +{ + if (dmabuf->texture == 0) { + return; + } + + glDeleteTextures(1, &dmabuf->texture); + dmabuf->texture = 0; +} + #endif /* CONFIG_OPENGL_DMABUF */ /* ---------------------------------------------------------------------- */ |