Eglimage yuv. camera preview, decoded video) as OpenGL textures.

Eglimage yuv. RESOLVED: No, modern unified shader hardware supports YUV texture sampling in all of the shader stages, we should keep this enable irrespective of shader stage. We should have a plan for w To run an NvMedia image for a producer and consumer . GL_EXT_YUV_target ¶ Valid APIs ¶ OpenGL ES 3. yuv -fr 720x480 -producer 1 -consumer 1 -d 1 [-ot yuv420] Sep 9, 2020 · This is a late answer. Regarding Overview The goal of this extension is to increase interoperability between OpenCL and EGL by introducing support for planar YUV images. , as an OpenGL or OpenGL ES framebuffer object, glTexSubImage2D, etc. For your reference, I am attaching a text file with EGL and OpenGLES extensions that we support. Sep 25, 2025 · YUV是一种图像颜色编码方式。 在说 yuv 之前，就不得不说 RGB 图像空间，顾名思义，RGB 是值图像的每一个像素都有 R、G,B 三个值，且三个值一次排列存储；但不一定说一定是按照 R,G,B 顺序排列，也可以是 B,G,R 这样的顺序。 6. /nvm_eglstream -f test. 0 implementation advertises support for EXT_YUV_target on your GPU? Does this apply to your situation? If EGL 1. Jul 27, 2020 · Dear Experts, I’m a little surprised to not find any OpenGL ES extensions for YCrCb (aka YUV) textures on the Nano. How does tda4AEN SDK9. One solution is to increase the number of texture image units required Jul 20, 2024 · 当将 YUV 作为 Texture 使用时, Sampler 需要声明为 __samplerExternal2DY2YEXT, 这时采样得到的将会是 YUV 值对应 xyz 当将 YUV 作为 FrameBuffer OBject 时, FrameBuffer 需要加上 layout(yuv) 的限定说明, 输出的 xyz 将会对应到 YUV from one basis (e. To perform the YUV rendering capability in this extension an application will attach a texture to the framebuffer object as the color attachment. Hello, Can you please describe your use case? Are you trying to read NV12 and write to an RGB FBO? Or are you trying to write YUV output to an FBO? Reading YUV textures and writing to an RGB framebuffer should work just fine. Mar 25, 2022 · For rendering, you declare the fragment shader output with the layout(yuv) qualifier and bind a FBO with a YUV EGLImage bound to the colour buffer. If an application specifies an EGLImage sibling as the destination for rendering and/or pixel download operations (e. The EGL Jul 11, 2021 · EGLImage代表一种由EGL客户API（如OpenGL，OpenVG）创建的共享资源类型。 它的本意是共享2D图像数据，但是并没有明确限定共享数据的格式以及共享的目的，所以理论上来讲，应用程序以及相关的客户API可以基于任意的目的创建任意类型的共享数据 Apr 21, 2020 · This extension explicitly leaves the YUV layout to the platform and EGLImage source extension (i. An external image AKA external texture is typically used to supply frames from an image stream (e. the GL_EXT_YUV_target, that allows GLES shaders to directly sample the YUV values, will come soon with the end devices. Name EXT_image_dma_buf_import Name Strings EGL_EXT_image_dma_buf_import Contributors Jesse Barker Rob Clark Tom Cooksey Contacts Jesse Barker (jesse 'dot' barker 'at' linaro 'dot' org) Tom Cooksey (tom 'dot' cooksey 'at' arm 'dot' com) Status Complete. YUV) to RGB (color conversion matrix, sampling offsets, etc) are taken from the EGLImage which is associated with the external texture. 2 support EGL mosaic output uyvy (yuv422)? Regards Sep 12, 2013 · Most of the YUV stuff in the framework is for use with the camera, which is better behaved than the video decoder when it comes to buffer formats. Am I missing something? I have code from iOS that decodes JPEGs into YCrCb textures using an Apple extension; this saves quite a lot of texture memory compared to decoding to RGB, with no loss of image quality as the JPEGs are YCrCb internally anyway. ), the modified image results will be observed by all EGLImage siblings in all client API contexts. How can current generation hardware support planar YUV EGLImage formats? GLES 2. To get a YUV image from a video API into a usable GL texture without EGL, you'd have to download the YUV image to the CPU, convert and interleave YUV to RGB and upload that buffer to the GPU. 1+ Description ¶ This extension adds support for three new YUV related items: first rendering to YUV images, second sampling from YUV images while keeping the data in YUV space, third it defines a new built in function that does conversion from RGB to YUV with controls to choose ITU-R BT. Mar 22, 2025 · Explore the Khronos Group's EGL extensions, providing detailed information and resources for developers working with graphics APIs and display systems. I would not be against splitting EXT_EGL_image_storage in 2, one to use a regular EGLImage as storage, and something like EXT_EGL_image_dmabuf_storage to use DMABUF images as stroage, that would make it more clear. 2 is required. Colorspace conversion must be applied by the application using a color conversion matrix. Mar 19, 2020 · It's often useful to process video frames using the GPU, and a lot of the times video frames come out of the encoder in the form of planar formats. EGL_KHR_image_base is required. */ #define RED 2 #define GREEN 1 Aug 26, 2012 · I've a problem with convertion of camera preview in Android from YUV format to RGB. Overview The goal of this extension is to increase interoperability between OpenCL and EGL by introducing support for planar YUV images. It has been stated that glTexSubImage2D() and glTexImage2D() are too slow so I'm trying to u The EGL registry contains specifications of the core API; specifications of Khronos- and vendor-approved EGL extensions; header files corresponding to the specifications; an enumerant and function registry; and other related documentation. 0 hardware can perform color conversion by inserting extra instructions into the shader program. Common ones (at least that I know about) are YUV 420 and 422. Aug 15, 2022 · The texture availablility would be defined by EGL_KHR_gl_image (and EGL_MESA_gl_texture_cubemap_image eventually), on both side (exporting and importing the DMABUF). May 31, 2024 · Part Number: TDA4AEN-Q1 Other Parts Discussed in Thread: TDA4VH Tool/software: Hi. 601-7 Full range (JFIF images), or ITU-R BT Feb 14, 2022 · Are you Checking for GL errors before and after your glFramebufferTexture2D () call? Are there any? If so, which? Have you verified that your driver’s OpenGLES 3. No specific dates nor devices yet though. e. However, planar textures require 2 or 3 surfaces to be read in order to sample a single texture. multi-plane YUV). Name String cl_intel_egl_image_yuv Contributors Ben Ashbaugh, Intel Pawel Wilma, Intel Bartosz Sochacki, Intel Contact Pawel Wilma, Intel (pawel. The extension mentioned above allows sampling such images as if they were regular OpenGL textures (with a few limitations). (Would I be better asking #endif #ifndef EGLIMAGE_FLAGS_YUV_CONFORMANT_RANGE # define EGLIMAGE_FLAGS_YUV_CONFORMANT_RANGE (0 << 0) # define EGLIMAGE_FLAGS_YUV_FULL_RANGE (1 << 0) # define EGLIMAGE_FLAGS_YUV_BT601 (0 << 1) # define EGLIMAGE_FLAGS_YUV_BT709 (1 << 1) #endif extern "C" { /* swap these for big endian. The implementation may choose to do this transformation when the external texture is sampled, when the external texture is bound, or any other time so long as the effect is the same. Use the EGL display ID that's been configured in the khronos section of your configuation file Sep 21, 2025 · gl-renderer: Add support for a few YUV dmabuf formats Namely the single-planar YUYV, the two-planar NV12, and the three-planar YUV420, using the shaders already present in Weston. 2 is required and cl_khr_egl_image implementation supporting sharing of images For example: Many video APIs work with YUV-planar (not-interleaved) formats. Such frames usually have special color encodings and memory layouts (e. For these you require the TEXTURE_EXTERNAL_OES binding and matching samplers; the TEXTURE_2D path only handles the traditional RGBA data formats. Specifically, this extension adds the ability to create OpenCL memory objects representing individual planes of an EGL planar YUV image. g. The purpose of conversion is to apply some effects. wilma 'at' intel. 0, June 03, 2015 Number OpenCL Extension #37 Status Final Draft Extension Type OpenCL platform extension Dependencies OpenCL 1. Version Version 7, December 13, 2013 Number EGL Extension #53 Dependencies EGL 1. I try to convert by fragment shader because convertion by nat Issues 1) For YUV texture formats, should the should the border color be specified as RGBA or YUVA ? Resolved: The border color should be specified as linear RGBA since the application may not know the underlying texture format/colorspace. Query and output the number of all supported framebuffer configurations for the specified EGL display Syntax: egl-configs [-display= egl_display_id] Runs on: QNX OS Options: -display= egl_display_id Query and output the number of all supported framebuffer configurations for this specific EGL display. . 2 is not supported, or if neither the EGL_OES_image nor EGL_OES_image_base extensions is supported, all discussion of Jan 30, 2014 · I'm trying to efficiently do color conversion from I420 to rgb to implement a video player in android. 601-7, ITU-R BT. camera preview, decoded video) as OpenGL textures. Feb 20, 2023 · The common use case for this is importing YUV video surfaces from camera/video decoders. com) Version Version 1. is implementation specific). f36 qc gtkr f5hf cv0w 773kp12z etr ytcz sunmxp9 mvqso