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This allows the engine demo to run again (avoid crash in VBO code).
This stuff still needs to be revisited someday though...
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Return the conservative PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE
value for now.
This fixes a bunch of regressions seen in piglit and glean.
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Also implement context member functions to optimize away those
flushes whenever possible.
Signed-off-by: Thomas Hellstrom <thellstrom-at-vmware-dot-com>
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The core reference counting code is centralized in p_refcnt.h.
This has some consequences related to struct pipe_buffer:
* The screen member of struct pipe_buffer must be initialized, or
pipe_buffer_reference() will crash trying to destroy a buffer with reference
count 0. u_simple_screen takes care of this, but I may have missed some of
the drivers not using it.
* Except for rare exceptions deep in winsys code, buffers must always be
allocated via pipe_buffer_create() or via screen->*buffer_create() rather
than via winsys->*buffer_create().
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Instead, a new pipe_transfer object has to be created and mapped for
transferring data between the CPU and a texture. This gives the driver more
flexibility for textures in address spaces that aren't CPU accessible.
This is a first pass; softpipe/xlib builds and runs glxgears, but it only shows
a black window. Looks like something's off related to the Z buffer, so the
depth test always fails.
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allows the driver to overwrite buffer allocation, first step on the way
to making winsys interface internal to the drivers. state trackers and
the code above it will go through the screen
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Need to disable/bypass lambda calculation since derivatives of texcoords
are meaningless for adjacent vertices.
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Configured for 2 cores.
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We want to use the pipe_buffer_* inlines everywhere, but a pipe context
is not always available nor is it needed.
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Also, rename p_tile.[ch] to u_tile.[ch]
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debug_get_bool_option will interpret "n", "no", "0", "f", or
"false" as FALSE; and everything else as TRUE. The default value
(used when the variable is not set) is received as a parameter.
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The non-vbuf option is going away...
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The struct is still there though until all winsys layers are updated
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Bind all the samplers/textures at once rather than piecemeal.
This is easier for drivers to understand.
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These are now per-screen functions, not per-context.
State tracker updated, code in drivers and p_context.h disabled.
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Specifying a threshold size is a bit more flexible, and allows the option
of converting even 1-pixel points to triangles (set threshold=0).
Also, remove 0.25 pixel bias in wide_point().
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For hardware without native polygon stipple. Create a 32x32 alpha texture
that encodes the stipple pattern. Modify the user's fragment program to
sample the texture (with gl_FragCoord) and kill the fragment according to
the texel value.
Temporarily enabled in softpipe driver, replacing the sp_quad_stipple.c step.
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AA points are drawn by converting the point to a quad, then modifying the
user's fragment shader to compute a coverage value. The final fragment
color's alpha is modulated by the coverage value. Fragments outside the
point's radius are killed.
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Called whenever texture data is changed (glTexImage, glTexSubImage,
glCopyTexSubImage, etc).
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New draw/prim stage: draw_aaline. When installed, lines are replaced by
textured quads to do antialiasing. The current user-defined fragment shader
is modified to do a texture fetch and modulate fragment alpha.
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Update the Makefiles and includes for the new paths.
Note that there hasn't been no separation of the Makefiles yet, and make is
jumping all over the place. That will be taken care shortly. But for now, make
should work. It was tested with linux and linux-dri. Linux-cell and linux-llvm
might require some minor tweaks.
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This is in a separate commit to ensure renames are properly preserved.
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