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Diffstat (limited to 'opengl/libagl2/README')
| -rw-r--r-- | opengl/libagl2/README | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/opengl/libagl2/README b/opengl/libagl2/README new file mode 100644 index 0000000..34746d3 --- /dev/null +++ b/opengl/libagl2/README @@ -0,0 +1,26 @@ +libAgl2 provides software GL ES 2.0 implementation using Pixelflinger2 in external/mesa3d + +To build, enable Android.mk, which builds libGLES_android.so, then replace the one built from libAgl in system/lib/egl. +ES 1.0 functions are not implemented and will cause exit, so do not setprop debug.egl.hw 0 until launcher is loaded. + +All functions have little to none error checking. +Not thread safe, Pixelflinger2 uses some static data. + +Most shader functions are implemented, however, most Get* functions for shaders/programs/uniforms/attribs are not. +No name system for shaders/programs, just using the pointers as names. + +Basic glTexImage2D, glTexSubImage2D, glCopyImage2D and glCopySubImage2D are implemented, with a range of 8/16/24/32bpp formats. +Cube map support is minimal. No mipmapping. +TexParameter is mostly implemented, supports texcoord wrap modes, and only linear for both min and mag, or nearest for both min and mag filtering. +Texture names are implemented, but bad. + +Frame buffer and render buffers are not implemented. + +Depth and stencil are implemented, but not tested. +Blending seems to work. +Colorbuffer supports RGBA_8888 and RGB_565. + +Vertex buffer objects are implemented. +Some GL_TRIANGLES and GL_TRIANGLE_STRIPS modes for glDrawArrays and glDrawElements are implemented, but vertex order is probably wrong so culling is disabled. + +Basic apps should work, and some libhwui should work, except for frame buffer operations, which will cause exit. |