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Needed for i915g, also fixed swizzle in draw_vs_aos_io.
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On some systems, putting vertex and index buffers in VRAM instead of GART
memory eliminates massive graphics corruption which is otherwise present,
due to unclear causes.
This patch adds an environment variable that does that, along with helpful
messages.
It turns it on by default on G7x, as it is what I am seeing corruption
on and some other reports also seemed to pinpoint these cards.
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Currently we allocate buffers in GART or VRAM at creation time.
However, when using swtnl, this results in reads from uncached
memory, which drastically impair performance.
So, for now, cause nouveau_screen.c to not pass any placement flags
to buffer creation, so that the buffers are moved later.
Previously libdrm itself did this, but was changed to not to do it.
This may introduce an extra copy in normal usage, but this currently
does not seem to introduce significant performance degradation.
This will be revisited when pipebuffer is integrated.
Note that for AGP systems, properly solving this may be complex
since currently there is no fast way of reading from GART/VRAM.
We will probably need to try mapping AGP as writethrough and, in
addition, make buffer creation more aware of future buffer usage.
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Currently we are continuously spewing messages about these variables
since we call debug_get_bool_option everytime we want to check their value.
This is annoying, slows things down due to terminal rerendering
and obscures useful messages.
This patch only calls debug_get_bool_option once and caches the result in a
static variable.
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This patch re-emits the viewport state on framebuffer or rasterizer
change.
This seems to be necessary on nv3x, but the reason is not fully
understood.
It is quite likely that this isn't really the correct fix, but seems
to work, and makes nv3x much better.
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The code was half converted, resulting in texturing being totally broken.
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Conflicts:
src/gallium/drivers/nv30/nv30_context.h
src/gallium/drivers/nv30/nv30_state.c
src/gallium/drivers/nv40/nv40_context.h
src/gallium/drivers/nv40/nv40_state.c
src/gallium/drivers/r300/r300_emit.c
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src_native_swz was used to translate 0/1 swizzles back when Gallium
supported them.
That support was later removed from Gallium, and the function currently
always returns true.
Remove it.
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Currently the behavior of shader.h depends on some constants that
are defined differently in vertex and fragment programs.
This patch cleans that up by splitting the relevant symbols in
vertex program and fragment program variants
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It was totally broken: the index buffer was passed as NULL!
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Don't lose precision by converting to u8.
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We must divide everything in the position by w, and emit position as
a 4-component vector.
Not sure why we must divide, but it works (see progs/redbook/checker).
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This avoids duplicating the vertex program generation logic and
makes the same code work for both nv30 and nv40.
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Replace the FORCE_SWTNL macro with a NOUVEAU_SWTNL environment variable.
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It is only used on pre-nv50 and nvfx is the only Gallium pre-nv50 driver.
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The adjustment of nv30/nv40 after the removal of bypass incorrectly
removed the hardware viewport bypass code, which we still need for
swtnl and also forgot to remove NVFX_NEW_RAST from pipe.
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This is the last nvfx unification patch.
nv[34]0_fragtex.c are moved to the common directory
nv[34]0_shader.h are renamed to nv[34]0_vertprog.h and moved to
the common directory
The separate nv30 and nv40 directories are removed from the build
system
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Many things, like texture wrap modes and min/mag filters are common.
Some others, like annisotropy and lod settings, are not.
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The bulk files cannot be unified, but the frontend can and allows to
share some code and simplify state_emit.c
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They are now almost identical, except for nv30 vs nv40 fragtex
initialization.
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Move the remaining content to the common header.
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The files have the same structure but are substantially different.
They are unified with appropriate conditionals.
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vertprog.c is similar but has substantial differences:
1. nv40 supports clip planes
2. nv40 uses a more advanced register allocator
3. Some register setup is different
4. Constants with the same name have different values
This patch unifies the two files.
nv30 gains clip plane support and the nv40 register allocator.
A new NVFX_VP(x) macro is introduced that at runtime resolved to
either the nv30 or the nv40 constant value.
nv30 clip planes are not tested and might not work
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state.c is identical except for:
1. Sampler state creation is different
2. nv40 swtnl support
3. Separate blend equations on nv40
This patch unifies nv[34]0_state.c, except the sampler state creation code.
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The files are identical, except for swtnl support which is commented
out on nv30 and restart being initialized on nv30 to avoid a compiler
warning.
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nv30_draw.c is a stub.
This patch makes both nv30 and nv40 use the nv40 swtnl path.
Note that this doesn't actually work on nv30 because the vertex program is
encoded in the nv40-only layout.
However, swtnl was unimplemented before on nv30, so this is not a regression.
Furthermore, a patch to fix this is available near the end of the patchset.
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The files are mostly the same except:
1. On NV40, some TGSI instructions are emulated with several hardware ones
2. Some instructions such as DDX/DDY, and STR were missing from nv30
3. NV40 has more sophisticated register management
nv30 now supports all instructions and uses the nv40 register management.
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shader.h is similar, except for the following differences:
1. The instruction sets are not exactly the same, but mostly similar
2. Vertex program fields are in different bit positions
This patch unifies all parts of nv[34]0_shader.h except the vertex
program fields.
Vertex opcodes are also changed so that the constant names includes
SCA if it is a scalar opcode and VEC if it is a vector opcode.
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The files are significantly different due to:
1. nv30 support 2 render targets, nv40 4
2. z-buffer pitch is set differently
3. nv30 has a limitation of colour_bits >= zeta_bits. This may not
actually exist in the driver though
4. nv30 points color0 at depth in the depth-only case
5. nv30 sets NV34TCL_VIEWPORT_TX_ORIGIN to 0. This is probably
unnecessary
This patch attempts to unify the two files and preserve the existing
behavior.
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The files are identical, except for an extra comment in nv30.
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The files are identical except formatting.
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The only difference between nv30 and nv40 is that nv30 allowed swizzling
for more texture types.
This patch preserves the existing behavior, using conditional code.
Note however that this does not make sense, since all texture types can
be swizzled on nv40 and probably on nv30 too.
However, the handling of swizzled surfaces in the current 2D code is
partially broken, so it's best not to touch this.
A whole rewrite of the 2D code will be submitted, which will solve this
problem.
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The files are identical, except for the fact that the nv40 version
forgets to unreference the stateobj.
Unified to the correct nv30 version.
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The files are the same except for swtnl support on nv40 and for
texture cache flushing on nv40.
Unify them, and use a macro to define 4 versions of render_states,
for all combinations of nvfx and hwtnl/swtnl.
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Will be used to hold source files unified between nv30 and nv40.
Eventually all nv30 and nv40 code will be moved there and the
nv30 and nv40 directories will be removed.
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This will make it faster to check for nv40.
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This patch unifies nv[34]0_screen.h, nv[34]0_context.h and
nv[34]0_state.h
The unified files are put in a new "nvfx" directory.
nv30_context.h and nv40_context.h still exist to hold the function
prototypes and include nvfx_context.h
nv[34]0_screen.h and nv[34]0_state.h are deleted, replaced by the
unified versions.
nv40 includes some extra fields for swtnl and user clip planes
support.
These fields will be unused on nv30 until that functionality gets
added to it too (by unification with nv40).
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