From 86c0522c63e84ee9a98b9cd9cf6588faba1bac23 Mon Sep 17 00:00:00 2001 From: Gerd Hoffmann Date: Tue, 10 Oct 2017 15:54:51 +0200 Subject: 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 Message-id: 20171010135453.6704-5-kraxel@redhat.com --- ui/egl-helpers.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) (limited to 'ui') 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 #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 */ /* ---------------------------------------------------------------------- */ -- cgit v1.2.3