| Commit message (Collapse) | Author | Age | Files | Lines |
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Signed-off-by: Tilman Sauerbeck <[email protected]>
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different yet compatible formats
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This allows to properly support OpenGL rectangle textures in a well
defined way, especially on drivers that don't expose
PIPE_CAP_NPOT_TEXTURES.
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Per Jakob's request. Not super-pretty, but it's a good point for modding
later.
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Plagiarizes email explanation from Roland.
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Document the new unified drawing method and remove references to old
ones.
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I'm not sure if I really got it right. This seems like one of those
"Duh, of course it works that way" things, but I'd like the
documentation to be readable by people not acquainted with OGL/D3D.
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Was feeling kind of weird without it.
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We *did* reach an agreement on this a few months ago, and now the docs
reflect it. However, we never got around to UV and Z...
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I'm not sure I picked the best voice here. I might come back to this
later.
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Conflicts:
src/gallium/state_trackers/python/p_context.i
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more consistent with rest of gallium naming conventions.
Also rename driver-internal names for these the same.
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clears were a bit limited in gallium:
- no scissoring (OGL only) nor explicit rectangle list (d3d9)
- no color/stencil masks (OGL only)
- no separate depth/stencil clears (d3d9/d3d10/OGL)
- cannot really clear single color buffer (only with resource_fill_region)
Additionally, d3d can clear surfaces not currently bound to the framebuffer.
It is, however, not easy to find some common ground what a clear should be able
to do, due to both API requirements and also hw differences (a case which might
be able to use a special clear path on one hw might need a "normal" quad render
on another).
Hence several clear methods are provided, and a driver should implement all of
them.
- clear: slightly modified to also be able to clear only depth or stencil in a
combined depth/stencil surface. This is however optional based on driver
capability though ideally it wouldn't be optional. AFAIK this is in fact
something used by applications quite a bit.
Otherwise, for now still doesn't allow clearing with scissors/mask (or single
color buffers)
- clearRT: clears a single (potentially unbound) color surface. This was formerly
roughly known as resource_fill_region. mesa st will not currently use this,
though potentially would be useful for GL ClearBuffer.
- clearDS: similar to above except for depth stencil surfaces.
Note that clearDS/clearRT currently handle can handle partial clear. This might
change however.
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Conflicts:
src/mesa/state_tracker/st_gen_mipmap.c
src/mesa/state_tracker/st_texture.c
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Previously, surface_copy was said to allow overlapping blits, and it was
"optional". However, some state trackers actually assumed it is always present,
and quite some code (like in u_blit) assumed overlapping isn't allowed.
Hence, resource_copy_region (and in the same spirit, resource_fill_region) is
now mandatory, but overlapping blits are no longer allowed. A driver can plug
in the cpu fallback util_resource_copy_region if it does not want to provide its
own implementation, though this is not optimal.
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due to popular request, use nr_samples parameter in is_format_supported()
instead of new is_msaa_supported() query.
This makes it easily possible to query if a format with a given sample count
is also supported not only as render target, but for sampler views (note that
texture sampling from multisampled resources isn't supported yet).
It is not quite how dx10 format msaa queries work, but we might need to revisit
format queries completely in the future anyway.
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add function to set sample mask, and state for alpha-to-coverage and
alpha-to-one. Also make it possible to query for supported sample count
with is_msaa_supported().
Use explicit resource_resolve() to resolve a resource. Note that it is illegal
to bind a unresolved resource as a sampler view, must be resolved first (as per
d3d10 and OGL APIs, binding unresolved resource would mean that special texture
fetch functions need to be used which give explicit control over what samples
to fetch, which isn't supported yet).
Also change surface_fill() and surface_copy() to operate directly on resources.
Blits should operate directly on resources, most often state trackers just used
get_tex_surface() then did a blit. Note this also means the blit bind flags are
gone, if a driver implements this functionality it is expected to handle it for
all resources having depth_stencil/render_target/sampler_view bind flags (might
even require it for all bind flags?).
Might want to introduce quality levels for MSAA later.
Might need to revisit this for hw which does instant resolve.
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Also rearrange some of the fields into point/line/polygon categories.
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Can't ref in the middle of a paragraph.
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PIPE_CAP_GLSL and PIPE_CAP_SM3 not removed yet, as opcode support is not
yet covered.
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Put PIPE_BIND_ and PIPE_TEXTURE_GEOM_ prefixes on token names so
that they can be found with grep. This needs to be done in more places.
Corrected/improved a lot of information and grammer.
I don't know how to properly format everything - someone else can take
care of that.
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