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The chars-per-pixel concept falls apart with compressed and yuv images,
where more than one pixel are coded in a single data block.
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Before, we were sometimes rendering into a stale texture because
st_finalize_texture() would discard the old texture and create a new one.
Moved st_update_framebuffer atom after texture validation so that we
can create a new renderbuffer surface if the texture changes.
Also, split texture validation into two parts: finalize_textures and
update_textures. Do finalize_textures first to avoid getting into the
situtation where we're doing a pipe->surface_copy() mid-way through
state validation.
Some debug code still in place, but disabled...
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Create different temporary surfaces for CPU_READ/WRITE when needed (such as
for glReadPixels, glAccum, some glCopy/DrawPixels, glCopyTexSubImage, etc).
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And don't use the display-target path to allocate them.
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For many envirionments it's necessary to allocate display targets
in a window-system friendly manner. Add facilities so that a driver
can tell if a texture is likely to be used to generate a display surface
and if use special allocation paths if necessary.
Hook up softpipe to call into the winsys->surface_alloc_storage()
routine in this case, though we probably want to change that interface
slightly also.
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Allocate a texture containing storage instead.
Also clean up ACCUM buffer allocation slightly -- drivers will need
some changes to texture allocation logic to accomodate the concept of
a texture that will only as image storage by the CPU, but it's cleaner
than it was.
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This allows us to remove most of the direct references to winsys in the state tracker.
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Make sure we can really render to the texture surface given its format.
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Also clarify that RGB formats with no (used) alpha component are treated as
having alpha = 1.0.
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If the driver can't create a PIPE_FORMAT_R16G16B16A16_SNORM surface, create
an accum surface using a shallower format and taller height. Since only the
accum buffer code accesses the surface the actual format doesn't really
matter, just that there's enough memory.
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The cell driver still uses an internal CELL_FLUSH_WAIT flag, in the long run
proper fencing should be implemented for it.
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These functions are now per-screen, not per-context.
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Calling glTexSubImage() or glTexImage() to replace texture data didn't
reliably cause pipe->set_sampler_texture() to get called so drivers didn't
always get notified of new texture data.
The st_texture_object->pt pointer doesn't always indicate changed data so
added a dirtyData field.
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Provide an actual definition of the pipe_buffer struct, containing
the parameters used to create the buffer, and its refcount.
Shift refcounting buffers out of the winsys interface, similar to
surfaces & textures.
Rework pipebuffer/ to reflect the fact these changes, and also Michel's
reworking of the buffer interface.
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These are changes that are in our internal branch, but somehow were skipped
so far. It was done using visual comparison of the branches --
it is likely that changes are being carried on the wrong way
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It's now the responsibility of surface users to keep track of their mappings.
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st_create_framebuffer() now takes pipe_formats for the color, depth, stencil
buffers.
This avoids a round-about chain of calls to pipe->is_format_supported() for
window renderbuffers (their format never changes).
Renderbuffer format selection code in st_format.c is simpler now too.
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surface, etc.
Additional types may be added in the future.
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intel_winsys works again.
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This makes debugging a _lot_ easier.
In gdb, "print format" used to display 613570600, now you see PIPE_FORMAT_A8R8G8B8_UNORM.
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Directly use struct pipe_buffer_handle for storage and struct pipe_surface for
(un)mapping.
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pipe->get_tex_surface() has to be used for access to texture image data.
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pipe_surface now has a pointer to the winsys which create/owns the surface.
This allows clean surface deallocation w/out a rendering context.
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Move pipe_region/surface_reference functions to pipe/p_inlines.h.
Remove #include "p_util.h" from pipe/p_context.h.
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Fix PIPE_FORMAT field encoding.
Re-implement st_get_format_info.
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This allows surfaces to be allocated without a rendering context.
A few loose ends to resolve, but in working condition.
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This allows regions to be allocated w/out a rendering context.
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This was only needed to avoid out-of-bounds memory accesses with the
2x2 quad_read/write() functions which no longer exist.
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