I'd like to compile as much of the device-specific code as possible
when building for simulator, and using if (using_simulator) instead of
ifdefs helps.
This saves a bunch of extra flushes when texsubimaging a whole texture
that's been used for rendering, or subdataing a whole BO. In particular,
this massively reduces the runtime of piglit texture-packed-formats (when
the probes have been moved out of the inner loop).
GLES2 doesn't have GL_TEXTURE_BASE_LEVEL, so the hardware doesn't. Fixes
piglit levelclamp, tex-miplevel-selection, and texture-storage/2D mipmap
rendering.
The non-base NPOT levels are stored as POT-aligned images. We get that
POT alignment by minifying the POT-aligned base level.
This means that level strides are also POT aligned, so we have to tell the
rendering mode config that our resource is larger than the actual
requested area.
Fixes the fbo-generatemipmap-formats NPOT cases. Regresses
depthstencil-render-miplevels 273 * -- the texture presentation now works
(where it was completely broken before), it looks like there's some
overflow of image bounds happening at the lower miplevels.
It's not passing some of the piglit tests, because it looks like at small
miplevels some contents from surrounding faces are getting filtered in at
the corners. It does get 7 new tests passing.
In the other related fields, "0" refers to the size of the first miplevel,
while this is a field in a slice. The other implicit slices we have
(cubemap layers) don't vary in size compared to the first one.
This is part of fixing extremely long runtimes on some piglit tests that
involve streaming vertex reuploads due to format conversions, and will
similarly be important for X performance, which relies on these flags.
When I made the shader cache take the .fs member and moved the binding
point to .bind_fs, I failed to update these. Fixes crashes in
copyteximage-related tests.
Now that tiling is in place, we can expose the other formats. Depth is
still broken (need to make changes in the shader), but if you don't expose
it things crash all over. SNORM is dropped, but we could re-add it later
with some shader fixes to handle converting between [0,1] and [-1,1].
This still treats everything as RGBA8888 for the most part, same as
before. This is a prerequisite for handling other texture formats, since
only RGBA8888 has a raster-layout mode.
We weren't accounting for the level 0 offset in the texture setup (so it
only worked if it happened to be a single-level texture), and doing so
required that we get the level 0 offset page aligned so that the offset
bits don't get interpreted as the texture format and such.
This mostly just takes every draw call and turns it into a sequence of
commands that clear the FBO and draw a single shaded triangle to it,
regardless of the actual input vertices or shaders. I copied the initial
driver skeleton mostly from freedreno, and I've preserved Rob Clark's
copyright for those. I also based my initial hardcoded shaders and
command lists on Scott Mansell (phire)'s "hackdriver" project, though the
bit patterns of the shaders emitted end up being different.
v2: Rebase on gallium megadrivers changes.
v3: Rebase on PIPE_SHADER_CAP_MAX_CONSTS change.
v4: Rely on simpenrose actually being installed when building for
simulation.
v5: Add more header duplicate-include guards.
v6: Apply Emil's review (protection against vc4 sim and ilo at the same
time, and dropping the dricommon drm bits) and fix a copyright header
(thanks, Roland)
