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visionbuf use EGL texture #310

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visionbuf use EGL texture #310

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f752ad6
doesn't work yet
May 24, 2022
48edf68
nv12 works
May 24, 2022
a44e828
works
May 24, 2022
8bf2e5b
fix build, use visionbuf nv12 vars
Jun 1, 2022
c167c9c
some cleanup
Jun 2, 2022
a747f35
build on pc
jwooning Jun 2, 2022
ebe1df6
fix build
jwooning Jun 2, 2022
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1 change: 1 addition & 0 deletions SConscript
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Original file line number Diff line number Diff line change
Expand Up @@ -64,6 +64,7 @@ if arch == "Darwin":
vipc_frameworks.append('OpenCL')
else:
vipc_libs.append('OpenCL')
vipc_libs.append('EGL')
envCython.Program('visionipc/visionipc_pyx.so', 'visionipc/visionipc_pyx.pyx',
LIBS=vipc_libs, FRAMEWORKS=vipc_frameworks)

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10 changes: 10 additions & 0 deletions visionipc/visionbuf.h
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Expand Up @@ -8,6 +8,12 @@
#include <CL/cl.h>
#endif

#define EGL_EGLEXT_PROTOTYPES
#define EGL_NO_X11
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <drm/drm_fourcc.h>

#define VISIONBUF_SYNC_FROM_DEVICE 0
#define VISIONBUF_SYNC_TO_DEVICE 1

Expand Down Expand Up @@ -51,12 +57,16 @@ class VisionBuf {
cl_mem buf_cl = nullptr;
cl_command_queue copy_q = nullptr;

// OpenGL
EGLImageKHR egl_image = EGL_NO_IMAGE_KHR;

// ion
int handle = 0;

void allocate(size_t len);
void import();
void init_cl(cl_device_id device_id, cl_context ctx);
void init_gl();
void init_rgb(size_t width, size_t height, size_t stride);
void init_yuv(size_t width, size_t height, size_t stride, size_t uv_offset);
int sync(int dir);
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21 changes: 21 additions & 0 deletions visionipc/visionbuf_ion.cc
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Expand Up @@ -117,6 +117,27 @@ void VisionBuf::init_cl(cl_device_id device_id, cl_context ctx) {
assert(err == 0);
}

void VisionBuf::init_gl() {
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any reason to do this here instead of UI?

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the image/texture is linked to the shared buffers, so it requires a texture pointer for every visionbuf object, so I guess it makes more sense to put it there

EGLDisplay display = eglGetCurrentDisplay();
EGLContext context = eglGetCurrentContext();

EGLint img_attrs[] = {
EGL_WIDTH, (int)this->width,
EGL_HEIGHT, (int)this->height, // 1000 // hack until stride is real
EGL_LINUX_DRM_FOURCC_EXT, DRM_FORMAT_NV12,
EGL_DMA_BUF_PLANE0_FD_EXT, this->fd,
EGL_DMA_BUF_PLANE0_OFFSET_EXT, 0,
EGL_DMA_BUF_PLANE0_PITCH_EXT, (int)this->stride,
EGL_DMA_BUF_PLANE1_FD_EXT, this->fd,
EGL_DMA_BUF_PLANE1_OFFSET_EXT, (int)this->uv_offset,
EGL_DMA_BUF_PLANE1_PITCH_EXT, (int)this->stride,
EGL_NONE
};
this->egl_image = eglCreateImageKHR(display, context, EGL_LINUX_DMA_BUF_EXT, 0, img_attrs);
printf("got %p %p gl image %p (%lux%lu) with fd %d error 0x%x\n", display, EGL_NO_CONTEXT,
this->egl_image, this->width, this->height,
this->fd, eglGetError());
}

int VisionBuf::sync(int dir) {
struct ion_flush_data flush_data = {0};
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