<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <meta name="Generator" content="Microsoft Word 15 (filtered medium)"> <style></style> </head> <body lang="EN-US" link="blue" vlink="purple"> <div class="WordSection1"> Hi Marek,<o:p></o:p> <o:p> </o:p> Thanks for your help. Now I can use GL extension “GL_OES_EGL_image_external” to load and render NV12 image, it works well on my platform (Broxton). <o:p></o:p> <o:p> </o:p> To ensure using this extension correctly on any platform, I checked for supported OpenGL extensions by glGetString() function, and printed out the list of supported extensions. Unfortunately, I did not find “GL_OES_EGL_image_external” in the list.<o:p></o:p> <o:p> </o:p> GL EXTENSIONS:<o:p></o:p> GL_EXT_debug_marker GL_ANDROID_extension_pack_es31a GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_APPLE_texture_max_level GL_EXT_blend_func_extended GL_EXT_blend_minmax GL_EXT_buffer_storage GL_EXT_clip_cull_distance GL_EXT_color_buffer_float GL_EXT_compressed_ETC1_RGB8_sub_texture GL_EXT_copy_image GL_EXT_discard_framebuffer GL_EXT_disjoint_timer_query GL_EXT_draw_buffers GL_EXT_draw_buffers_indexed GL_EXT_draw_elements_base_vertex GL_EXT_frag_depth GL_EXT_geometry_point_size GL_EXT_geometry_shader GL_EXT_gpu_shader5 GL_EXT_map_buffer_range GL_EXT_multi_draw_arrays GL_EXT_occlusion_query_boolean GL_EXT_polygon_offset_clamp GL_EXT_primitive_bounding_box GL_EXT_read_format_bgra GL_EXT_robustness GL_EXT_separate_shader_objects GL_EXT_shader_framebuffer_fetch GL_EXT_shader_framebuffer_fetch_non_coherent GL_EXT_shader_integer_mix GL_EXT_shader_io_blocks GL_EXT_shader_ samples_identical GL_EXT_tessellation_point_size GL_EXT_tessellation_shader GL_EXT_texture_border_clamp<o:p></o:p> <o:p> </o:p> I also printed out the GL information of my platform I’m using:<o:p></o:p> GL_VENDOR: Intel Open Source Technology Center<o:p></o:p> GL_RENDERER: Mesa DRI Intel(R) HD Graphics 505 (Broxton)<o:p></o:p> GL_VERSION: OpenGL ES 3.2 Mesa 18.1.0-devel (git-d63719023b)<o:p></o:p> GL_SHADING_LANGUAGE_VERSION: OpenGL ES GLSL ES 3.20<o:p></o:p> <o:p> </o:p> Could you please give me a hint if I made something wrong to query the extension name string “GL_OES_EGL_image_external” from GL? <o:p></o:p> <o:p> </o:p> <o:p> </o:p> Thanks,<o:p></o:p> Zong Wei<o:p></o:p> <a name="_MailEndCompose"><o:p> </o:p></a> <a name="_____replyseparator"></a>From: Marek Olšák [mailto:maraeo@gmail.com] Sent: Tuesday, March 20, 2018 9:42 AM To: Zong, Wei <wei.zong@intel.com> Cc: mesa-dev@lists.freedesktop.org Subject: Re: [Mesa-dev] Create texture2D from NV12<o:p></o:p> <o:p> </o:p> <div> <div> The only way is to use GL_OES_EGL_image_external to load an NV12 image. kmscube does that.<o:p></o:p> </div> Marek<o:p></o:p> </div> <div> <o:p> </o:p> <div> On Fri, Mar 16, 2018 at 4:10 AM, Zong, Wei <<a href="mailto:wei.zong@intel.com" target="_blank">wei.zong@intel.com</a>> wrote:<o:p></o:p> <blockquote style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt"> <div> <div> Hello,<o:p></o:p> </div> <div> <o:p></o:p> </div> <div> May I ask a question? I got a NV12 image buffer and I want to render it with OpenGL. I know a method to do this is to bind Y/UV planes as two separate textures, then perform YUV to RGB conversion in fragment shader.<o:p></o:p> </div> <div> <o:p></o:p> </div> <div> But I want to know if Mesa provide APIs to create and bind a texture 2D image with NV12 format directly?<o:p></o:p> </div> <div> <o:p></o:p> </div> <div> Thanks,<o:p></o:p> </div> <div> Zong Wei<o:p></o:p> </div> <div> <o:p></o:p> </div> <div> <o:p></o:p> </div> </div> _______________________________________________ mesa-dev mailing list <a href="mailto:mesa-dev@lists.freedesktop.org">mesa-dev@lists.freedesktop.org</a> <a href="https://lists.freedesktop.org/mailman/listinfo/mesa-dev" target="_blank">https://lists.freedesktop.org/mailman/listinfo/mesa-dev</a><o:p></o:p> </blockquote> </div> <o:p> </o:p> </div> </div> </body> </html>