VC4 (and many GLES2 renderers) can't render to GL_ALPHA, so our pixmap
would end up as GLAMOR_MEMORY and our dereference of the FBO would
setfault. Instead, tell the pixmap creation that we don't need an FBO
at all. Our glyph upload path was already glTexImage for non-a1, and
a more general software fallback for a1 (since the glyph is also in
system memory).
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Keith Packard <keithp@keithp.com>
New composite glyphs code uses the updated glamor program
infrastructure to create efficient shaders for drawing render text.
Glyphs are cached in two atlases (one 8-bit, one 32-bit) in a simple
linear fashion. When the atlas fills, it is discarded and a new one
constructed.
v2: Eric Anholt changed the non-GLSL 130 path to use quads instead of
two triangles for a significant performance improvement on hardware
with quads. Someone can fix the GLES quads emulation if they want to
make it faster there.
v3: Eric found more dead code to delete
Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
