27 lines
1.4 KiB
Plaintext
27 lines
1.4 KiB
Plaintext
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libAgl2 provides software GL ES 2.0 implementation using Pixelflinger2 in external/mesa3d
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To build, enable Android.mk, which builds libGLES_android.so, then replace the one built from libAgl in system/lib/egl.
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ES 1.0 functions are not implemented and will cause exit, so do not setprop debug.egl.hw 0 until launcher is loaded.
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All functions have little to none error checking.
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Not thread safe, Pixelflinger2 uses some static data.
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Most shader functions are implemented, however, most Get* functions for shaders/programs/uniforms/attribs are not.
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No name system for shaders/programs, just using the pointers as names.
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Basic glTexImage2D, glTexSubImage2D, glCopyImage2D and glCopySubImage2D are implemented, with a range of 8/16/24/32bpp formats.
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Cube map support is minimal. No mipmapping.
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TexParameter is mostly implemented, supports texcoord wrap modes, and only linear for both min and mag, or nearest for both min and mag filtering.
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Texture names are implemented, but bad.
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Frame buffer and render buffers are not implemented.
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Depth and stencil are implemented, but not tested.
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Blending seems to work.
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Colorbuffer supports RGBA_8888 and RGB_565.
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Vertex buffer objects are implemented.
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Some GL_TRIANGLES and GL_TRIANGLE_STRIPS modes for glDrawArrays and glDrawElements are implemented, but vertex order is probably wrong so culling is disabled.
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Basic apps should work, and some libhwui should work, except for frame buffer operations, which will cause exit.
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