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OpenGL ES 2.0 extensions - min/max blends ?

Alexander Irion
Prodigy 60 points

Hello!

In the following press release from TI from 08.01.2013 it was mentioned, that some GLES3 features are added to the DDK as extensions. For example min/max blends are mentioned (glBlendEquation with GL_MIN, GL_MAX).

http://www.imgtec.com/News/detail.asp?ID=717


My question is, if the current GLSDK 6.04.00.02 supports this extensions mentioned above for the PowerVR SGX 544MP?


Regards,

--Alex

  • 0
    TI__Guru**** 161600 points

    Hi Alex,

    You can see what GLSDK6_04 supports on the following wiki articles:
    http://processors.wiki.ti.com/index.php/GLSDK_Datasheet_OMAP5_6.04.00.02#Graphics

    http://processors.wiki.ti.com/index.php/OMAP5_GLSDK_6.04.00.02_Release_Notes

    The kernel modules & user modules used in GLSDK6_04 are located here: http://git.ti.com/graphics/

    Hope this helps.

    Best Regards,

    Yordan

  • 0 in reply to Yordan Kovachev
    Prodigy 60 points

    Hello Yordan!

    Thank you, but the links above don't tell which GL extensions to GLES v2 are supported by the driver.

    I just tested with the current GLSDK6_04, but glBlendEquation(GL_MIN) still leads to a GL_INVALID_ENUM, albeit this press release from Imgtec claims, that min/max blending is supported:

    "Not only that, but we have recently pushed the boundary for all existing PowerVR Series5XT GPUs with a new series of API extensions which include OpenGL ES 3.0 features like MRTs, occlusion queries, seamless cube maps, sampler access from vertex shaders, floating point textures, GLSL full-precision floating point, R and RG textures, min/max blends, and multisample render buffers."

    http://blog.imgtec.com/powervr/the-powervr-sgx544mp-a-modern-gpu-for-todays-leading-platforms


    This are the supported extensions, reported on the OMAP5 and they dont show GL_EXT_blend_minmax:

    GL version: OpenGL ES 2.0 build 1.9@2253347                                                                                                      
    GLSL version: OpenGL ES GLSL ES 1.00 build 1.9@2253347                                                                                           
    GL vendor: Imagination Technologies                                                                                                              
    GL renderer: PowerVR SGX 544MP                                                                                                                   
    GL extensions: GL_OES_rgb8_rgba8 GL_OES_depth24                                                                                                  
    GL_OES_vertex_half_float GL_OES_texture_float                                                                                                    
    GL_OES_texture_half_float GL_OES_element_index_uint                                                                                              
    GL_OES_mapbuffer GL_OES_fragment_precision_high                                                                                                  
    GL_OES_compressed_ETC1_RGB8_texture GL_OES_EGL_image                                                                                             
    GL_OES_EGL_image_external GL_OES_required_internalformat                                                                                         GL_OES_depth_texture GL_OES_get_program_binary                                                                                                   
    GL_OES_packed_depth_stencil GL_OES_standard_derivatives                                                                                          
    GL_OES_vertex_array_object GL_OES_egl_sync GL_OES_texture_npot                                                                                   
    GL_EXT_multi_draw_arrays GL_EXT_texture_format_BGRA8888                                                                                          GL_EXT_discard_framebuffer GL_EXT_shader_texture_lod                                                                                             
    GL_IMG_shader_binary GL_IMG_texture_compression_pvrtc                                                                                            
    GL_IMG_texture_compression_pvrtc2 GL_IMG_texture_npot                                                                                            
    GL_IMG_texture_format_BGRA8888 GL_IMG_read_format                                                                                                
    GL_IMG_program_binary GL_IMG_uniform_buffer_object                                                                                               
    GL_IMG_multisampled_render_to_texture                                                                                                            
    GL_TI_image_external_raw_video

    --Alex