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egl-helpers: add helpers to handle opengl framebuffers

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Add a collection of egl_fb_*() helper functions to manage and use opengl
framebuffers, which is a common pattern in UI code with opengl support.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20170614084149.31314-2-kraxel@redhat.com
This commit is contained in:
Gerd Hoffmann 2017-06-14 10:41:46 +02:00
parent 8dfaf23ae1
commit 6fafc26014
2 changed files with 91 additions and 0 deletions
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15
include/ui/egl-helpers.h
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@ -8,6 +8,21 @@
extern EGLDisplay *qemu_egl_display;
extern EGLConfig qemu_egl_config;
typedef struct egl_fb {
int width;
int height;
GLuint texture;
GLuint framebuffer;
bool delete_texture;
} egl_fb;
void egl_fb_destroy(egl_fb *fb);
void egl_fb_setup_default(egl_fb *fb, int width, int height);
void egl_fb_create_for_tex(egl_fb *fb, int width, int height, GLuint texture);
void egl_fb_create_new_tex(egl_fb *fb, int width, int height);
void egl_fb_blit(egl_fb *dst, egl_fb *src, bool flip);
void egl_fb_read(void *dst, egl_fb *src);
#ifdef CONFIG_OPENGL_DMABUF
extern int qemu_egl_rn_fd;