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[Qemu-devel] [PULL 4/6] egl-helpers: add dmabuf import support
From: |
Gerd Hoffmann |
Subject: |
[Qemu-devel] [PULL 4/6] egl-helpers: add dmabuf import support |
Date: |
Tue, 17 Oct 2017 13:13:48 +0200 |
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 <address@hidden>
Message-id: address@hidden
---
include/ui/egl-helpers.h | 3 +++
ui/egl-helpers.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 49 insertions(+)
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 */
/* ---------------------------------------------------------------------- */
--
2.9.3
- [Qemu-devel] [PULL 0/6] Opengl 20171017 patches, Gerd Hoffmann, 2017/10/17
- [Qemu-devel] [PULL 4/6] egl-helpers: add dmabuf import support,
Gerd Hoffmann <=
- [Qemu-devel] [PULL 1/6] console: add support for dmabufs, Gerd Hoffmann, 2017/10/17
- [Qemu-devel] [PULL 3/6] opengl: add flipping vertex shader, Gerd Hoffmann, 2017/10/17
- [Qemu-devel] [PULL 2/6] opengl: move shader init from console-gl.c to shader.c, Gerd Hoffmann, 2017/10/17
- [Qemu-devel] [PULL 6/6] egl-headless: add dmabuf support, Gerd Hoffmann, 2017/10/17
- [Qemu-devel] [PULL 5/6] egl-helpers: add egl_texture_blit and egl_texture_blend, Gerd Hoffmann, 2017/10/17
- Re: [Qemu-devel] [PULL 0/6] Opengl 20171017 patches, Peter Maydell, 2017/10/19